法国专利FR3017499A1 BATTERY CHARGING APPARATUS FOR VEHICLE

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专利摘要:
To suppress a reduction in the charge efficiency of a battery when a gap occurs between a power generation period and a power-on period, a battery charging device is provided for a vehicle comprising a power unit. driver (14) converting a three-phase AC energy supplied by a winding of each phase of a stator (13) of a generator (11) into DC power using a plurality of switching elements (QU1, Qw2 ) for supplying DC power to a battery (15), a control unit (16) controlling a switching between a live state and a de-energized state of each of the plurality of switching elements, and a unit position detector (17) providing a position detection signal (Tp) indicating a position of a rotor (12) of the generator (11).
公开号:FR3017499A1
申请号:FR1550798
申请日:2015-02-02
公开日:2015-08-14
发明作者:Yutaka Sonoda；Katsuhiro Ouchi；Kazuhiko Ono；Keishi Takayama
申请人:Honda Motor Co Ltd；
IPC主号:

专利说明:

[0001] TECHNICAL FIELD The present invention relates to a charging apparatus for charging a battery for a vehicle. Prior art A battery charging apparatus for a vehicle which determines the timing of the powering up of a switching element corresponding to each phase of a three-phase AC generator on the basis of an output signal of a A position sensing sensor for detecting the position of a three-phase AC generator rotor and generating electricity to charge a battery is known (for example, see Patent Document 1). In the above-mentioned battery charging apparatus, synchronization of the energization of the switching element is to be determined on the basis of an output signal of the position sensing sensor in a period of time of power-up. previous voltage, i.e. based on previous data, instead of a current power-on period. Nevertheless, if a change in power generation period occurs due to a sudden rotational fluctuation in the generator caused by acceleration or deceleration of the vehicle, etc., spacing occurs between the power generation period and the power-up period, which results in a reduction in the battery charging efficiency.
[0002] It should be noted that the "power-on period" is equivalent to a period (360 ° electrical angle) of repetition of a power-up pattern representing the power on or power off of each of plurality of switching elements. It should also be noted that the "power generation period" is equivalent to a generator output period corresponding to an electrical angle of 360 °.
[0003] Patent Application 1 JP-A No. 2012-005 246 Summary of the Invention Technical Problem An object of the present invention is to suppress a reduction in the charging efficiency of a battery when spacing occurs between a generation period of energy and a power-on period. Solution to the Problem The present invention includes the following constitution as a means of making the above-mentioned object. A feature of the invention is that a battery charging apparatus for a vehicle comprises: a driving unit (14) which converts a three-phase alternating-current energy delivered by a winding of each phase of a stator (13); ) a three-phase AC generator (11) in DC power using a plurality of switching elements (Qui, -, 4w2) for supplying DC power to a battery (15); a control unit (16) which controls switching between a live state and a power off state of each of the plurality of switching elements; and a position detection unit (17) which outputs a position detection signal (Tp) indicating a position of a rotor (12) of the three-phase AC generator. The control unit obtains a next estimate energy generation period (TE) of the three-phase AC generator based on the preceding position detection signal and determines a next turn-on period of each of the plurality of switching elements based on the estimation energy generation period. The control unit judges a start of the power up period based on an input of the position detection signal, and if a period of time until a subsequent input of the position detection signal exceeds the period of during the period up to the next input of the position detection signal, the control unit has a holding period during which the plurality of switching elements are maintained in the state. energized or de-energized immediately before the period until the next input of the position detection signal exceeds the power-on period.
[0004] A feature of the invention according to claim 2 is that the hold period is limited to a predetermined period (Tmax). A feature of the invention according to claim 3 is that an input period of the position detection signal is determined by an interval between falling edges or between rising edges of the position detection signal, and the unit The control unit obtains the estimate generation period 10 based on a previous input period of the position detection signal and a variation (OP) thereof. A feature of the invention according to claim 4 is that, if the next input of the position detection signal is not given even after the expiration of the predetermined period, the control unit switches the plurality of switching elements in a short-circuit state of all phases during the period until the next input of the position detection signal. A feature of the invention according to claim 5 is that the predetermined period is changed in proportion to the estimate energy generation period. A feature of the invention according to claim 6 is that the predetermined period is a period of a predetermined phase angle of the estimate energy generation period. A feature of the invention according to claim 7 is that the control unit comprises a power up pattern with a preset switching command between the live state and the power off state of each of the plurality of switching elements in the power up period, and the control unit determines a subsequent power-up timing of each of the switching elements according to the power-up pattern at each input of the position detection signal. A feature of the invention according to claim 8 is that the power-up pattern sets the power-on timing of the switching element connected to each phase of the three-phase AC generator, and the control unit determines and simultaneously updates the next power-up timing of the switching element connected to each phase with each input of the position detection signal. A feature of the invention according to claim 9 is that the control unit detects a voltage (VB) of the battery, and controls the power-up timing on a forward side or a delay side so that the battery voltage becomes a predetermined voltage (VT); the power up pattern includes an advance pattern and a delay pattern; and the control unit determines the power-up timing of the switching element according to the feed pattern or the delay pattern. A feature of the invention according to claim 10 is that the battery charging apparatus further comprises a throttle opening detector (28) for detecting a throttle opening of an internal combustion engine. (21). The rotor rotates on the basis of a rotation of the internal combustion engine (21). The control unit corrects the estimation energy generation period based on a variation of the throttle opening. A feature of the invention according to claim 11 is that the battery charging apparatus further comprises a speed lever position detector (24) for detecting a gear lever position of a transmission (22) disposed between the internal combustion engine and a driving wheel (25) of the vehicle. The control unit corrects the estimation energy generation period based on the variation of the throttle opening and the shift position. A feature of the invention according to claim 12 is that the control unit comprises, in the form of mapping data (29), a predetermined variation of a rotational speed of the internal combustion engine on the basis of the variation of the throttle opening and the gear lever position and corrects the estimation energy generation period based on the mapping data.
[0005] Advantageous effects of the invention According to the invention according to claim 2, even when a real energy generation period becomes greater than the estimation energy generation period due to the occurrence of a fluctuation rotational, the generated electricity can be efficiently stored in the battery. According to the invention according to claim 3, the flow of excessive current to the switching elements can be prevented. According to the invention according to claim 4, the estimation accuracy of the power generation period is improved, and the generated electricity can be efficiently stored in the battery. According to the invention according to claim 5, the flow of excessive current to the switching elements can be prevented. According to the invention according to claim 6, the period of time during which the switching element is kept in the energized state or in the de-energized state can be set at the time corresponding to the rotational fluctuation. According to the invention according to claim 7, the predetermined period can be changed according to the estimation energy generation period. According to the invention according to claims 8 and 9, the power-on timing can be determined by the previously prepared power-up pattern. The control load is thus lightened and the reactivity is reinforced. According to the invention according to claims 10 to 12, the power-up timing of the switching element connected to each phase can be determined and updated simultaneously by the previously prepared power-up pattern.
[0006] The control load is thus lightened and the reactivity is reinforced. According to another characteristic of the invention, even if the actual energy generation period changes with respect to the estimation energy generation period due to the occurrence of a rotational fluctuation in the internal combustion engine, the generated electrical energy can be efficiently stored in the battery.
[0007] BRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the invention will emerge more clearly from a reading of the description below, made with reference to the appended drawings, in which: FIG. 1 illustrates the electrical connection between a current generator three-phase AC and a battery charging device; Fig. 2 is a timing chart showing overall charge control by the battery charging apparatus; Fig. 3 shows patterns of energizing switching elements; Fig. 4A is a flow chart showing an example of a power-on command; Fig. 4B is a flow chart showing an example of a power-on command; FIG. 5 shows an example of the relationship between a real rotational speed and an estimated rotational speed of an internal combustion engine; Fig. 6 is a block diagram showing an example of the link for efficiently charging a battery as a result of rotational fluctuation; Fig. 7 is a flow chart showing an example of the process for correcting an estimated power generation period; Figure 8 shows an example of mapping data. Embodiment Description A battery charging apparatus for a vehicle according to an embodiment of the present invention will be described in detail hereinafter with reference to the accompanying drawings. Battery Charging Device Figure 1 illustrates the electrical connection between a three-phase AC generator and a battery charging apparatus. A three-phase alternating current generator (hereinafter referred to as a generator) shown in FIG. 1 is a magnetic generator driven by a motive power generator, such as an internal combustion engine. The magnetic generator comprises: a rotor (rotator) 12 in which a magnetic field is formed by attaching permanent magnets to a yoke; and a stator (stationary portion) 13 which is composed of an armature core and armature windings wrapped around the core. The rotor 12 is attached to a rotational shaft of the motive force generator, and the stator 13 is attached to an attachment portion which is attached to a housing, a cover, and the like of the motive power generator. The three-phase AC power delivered by the armature windings of the generator 11 is converted into DC power by a driver 14 which includes a full-wave rectifier, and is supplied to a battery 15 which is a battery. In this connection, it will be appreciated that an example of a delta connection of the armature windings is shown in FIG. 1 and that a star connection is also possible. By charging the battery 15, a control circuit 16 applies a control voltage to the armature windings by controlling the switching on or off of the switching elements arranged in parallel with diodes of the driving unit. 14, and controls the output voltage 20 of the generator 11 so as to obtain a suitable voltage as the charging voltage of the battery 15. The control circuit 16 detects a terminal voltage VB of the battery 15 and controls the setting energizing or de-energizing a plurality of switching elements of the driving unit 14 so that the terminal voltage VB becomes a predetermined voltage VT. A position detection unit 17 comprises a gearbox which is attached to the rotor 12 of the generator 11 and a pulse generator which is attached to an attachment portion of the generator 11 for example to be opposite to the gearbox. The position detection unit 17 produces a position detection signal Tp indicating the detection of the reelector each time the reel which rotates with the rotor 12 passes near the pulse generator. A central processing unit (CPU) 161 of the control circuit 16 executes a command of each part of the vehicle by executing various control programs stored in a read only memory (ROM) 163 with a random access memory (RAM) 162 as a working memory. The control programs include the charge control program according to the present embodiment. The control circuit 16 includes an analog-to-digital converter (ADC) 165 for detecting the terminal voltage VB of the battery 15. In addition, the control circuit 16 has an input / output port (I / O) 164 for supplying a drive signal to control the switching on or off of each switching element of the drive unit 14 and to input the position detection signal Tp output from the position detection unit 17 Charge Control Introduction Fig. 2 is a timing chart generally illustrating the charge control by the battery charging apparatus. Fig. 2 (a) shows the relationship between the position detection signal Tp and the energizing period, for example, of a phase U, when the motive power generator regime Ne is in a stable state. Fig. 2 (a) shows a state in which the position detection signal Tp decreases at each electrical angle of 360 °, and then the power up period of the phase U begins when the electrical angle is advanced by an angle predetermined and ends when the electrical angle is further advanced by 180 °. The central processing unit (CPU) 161 measures the generation period of the generator 11 by detecting the descent of the position detection signal Tp and measuring an interval between falling edges of the position detection signal Tp, and estimates a next generation period from the measurement result. Reference is hereinafter made to the detection of the descent of the position detection signal Tp by the central processing unit (CPU) 161 as "Tp detection", "Tp input" or other similar formulation. Reference is also made hereinafter to the energy generation period estimated as the "estimation period". The next energy generation period (estimation period TE_2 shown in Fig. 2 (a)) can be estimated from the result of the period measurement Mo shown in Fig. 2 (a), but it is from preferably estimated by including the measurement results of a preceding energy generation period taking into account a fluctuation of the rotation regime Ne. More specifically, it is judged whether the rotation regime Ne has a tendency upwards or downwards according to the measurement results of the preceding energy generation period and, taking into account the judgment result, the energy estimate period is estimated. For example, in Fig. 2 (a), an estimation period TE0 is estimated from the results of measurements from period Mo to M2.
[0008] The reference synchronization for starting the power-up period is for example the synchronization at which the induction voltage of the phase U is reversed from the negative polarity to the positive polarity (which is referred to hereinafter by reference). as an inversion from negative to positive). Figure 2 (a) shows an example where there is a slight difference between the Tp detection timing and the reference timing to start the power up period which corresponds to the synchronization of the negative to positive inversion of This timing difference is related to the location of the position detection unit 17, and the electrical angle corresponding to the synchronization difference is always constant. In addition, this synchronization is changed by performing an advance / delay command of the power-on period. The advance / delay command will be described below. Therefore, if an estimation period TE is obtained, it is possible to estimate at which synchronization the phase U must be reversed from negative to positive after the detection of Tp. For example, when the electrical angle corresponding to the synchronization difference is defined as A, the point in time at which TE - A / 360 seconds elapses from the beginning of the time count at the detection of Tp can be set as reference synchronization to start the power-on period. FIG. 3 shows power-up patterns of the switching elements of the driver unit 14. In FIG. 3, the power-up patterns for a power up period are shown, with "ON" which indicates a closed state (ON, a live state) of the switching element and "OFF" which indicates an open state (OFF, off state) of the switching element. FIG. 3 (a) schematically represents an induction voltage of each of the U, V and W phases. When the synchronization at which the induction voltage of the U phase is inverted from negative to positive is defined as electrical angle of 0 °, the induction voltages of the phases V and W are reversed from negative to positive respectively at 120 ° and 240 °. Since the switch-on command of each switching element must be performed on the basis of the positive / negative inversion of the induction voltage, the relationship between the opening and closing of each switching element can be summarized. in the form of a power-up pattern shown in Fig. 3 (b). As shown in Fig. 3 (b), the energizing pattern defines stages, from the first to the sixth, for phase divisions each having an electrical angle of 60 °, which are obtained by dividing a period of each phase into six equal parts. The CPU 161 generates a drive signal of each switching element by changing stages, from the first to the sixth in that order, with the detection of Tp as a reference. It should be noted that the period of each stage is calculated by TE / 6 (= TE - 60/360) in relation to the estimation period TE. It should also be noted that the phase division of each stage is not limited to an electrical angle of 60 °, but may be an electrical angle of less than 60 °, such as an electrical angle of 30 °. °. In this manner, the switching on / off order of each of the plurality of switching elements during the power up period is determined according to the power-on reason. The power-up pattern shown in Fig. 3 (b) is a reference power-up pattern. Furthermore, Figs. 3 (c) and 3 (d) show an advance pattern and a delay pattern, respectively, which can be set at the moment of controlling the amount of power generation. Note that power-up patterns for Qin, Qv2 and Qw2 switching elements are formed by inverting those for Q1, Q6 and Qigi switching elements by forming push-pull pairs therewith. Therefore, the description of the energizing patterns for the switching elements Qin, Qv2 and Qw2 is omitted in Figures 3 (c) and 3 (d). The advance / delay control is to control an increase / decrease in the power generation amount of the generator 11 by shifting the power-on period of the switching element to a leading edge or an edge side. delay in relation to the energy generation period. When the battery voltage VB is greater than or equal to the predetermined voltage VT, the CPU 161 judges that the charge of the battery 15 is excessive. The central processing unit (CPU) 161 then determines a subsequent estimation period TEi + i and sets the advance pattern (see Fig. 3 (c)) as the power-up pattern, which starts at the second stage. and which passes through the sixth stage to the first stage, to decrease the amount of power generation, thereby preventing an excessive charge of the battery 15. On the other hand, when the battery voltage VB is lower at the predetermined voltage VT, the CPU 161 judges that the charge of the battery 15 is insufficient. The CPU 161 then determines the next estimation period TEi + 1 and sets the delay pattern (see Fig. 3 (d)) as a power-on reason, which starts on the sixth floor. then going to the first stage and ending at the fifth floor, to increase the amount of power generation, thereby increasing the amount of charge of the battery 15. In this way, the control circuit 16 executed the advance / delay control so that the battery voltage VB becomes the predetermined voltage VT by switching between the reference pattern, the feed pattern and the delay pattern as a function of the voltage state of the VB battery. The charge control in the case of the occurrence of rotational fluctuation of the driving force generator will be described hereinafter with reference to Fig. 2 (b). Fig. 2 (b) shows the relationship between Tp and the power-up period of each phase in the case where the power generation period becomes longer due to rotational fluctuation in the motive power generator. Note that in Figure 2 (b), the timing difference described above is defined as zero (A = 0) to simplify the explanation. In an estimation period Te2, Tp is not detected until the end of the estimation period and, at the expiration of a period t1, Tp is detected. In this case, after the end of the estimation period TE2, the central processing unit (CPU) 161 starts counting time t from the end of the estimation period 20 while maintaining the energized state or the de-energized state of each switching element at the end of the estimation period. It should be noted that reference is made hereinafter to the maintenance of the live state or the de-energized state of each switching element as a "state hold". When Tp is detected before the time count t reaches a predetermined limiting period Tmax, the CPU 161 determines a subsequent estimation period TE3 and starts the next power-on period. The counting time t1, after the end of the estimation period TE2, does not reach the limiting period Tmax (t1 <Tmax), and the state maintenance is carried out in the period t1. In the next estimation period TE3, again, Tp is not detected until the end of the estimation period, and, additionally, Tp is detected after an expiration of a period t2 + t3. In this case also, after the end of the estimation period TE3, the central processing unit (CPU) 161 starts counting the time t from the end of the estimation period while carrying out the state maintenance. corresponding to the state at the end of the estimation period. When Tp is not detected and the count of the time t reaches the limiting period Tmax, the central processing unit (CPU) 161 sets a short-circuit state of all the phases (all the short-circuited phases) in which the switching elements which, 4, 71 and Qwi are set to an open state and the switching elements Que, 4, 72 and Qw2 are set to a closed state, and it continuously counts the time t. Then, when Tp is detected at the timeout synchronization t2 + t3, the CPU 161 determines a next estimation period TE4 and starts the next power up period. After the end of the estimation period TE3, the counting time t2 reaches the limiting period Tmax, and the short-circuit state of all the phases is set for a period (i.e. period t2 to t3) until Tp is then detected.
[0009] The limiting period Tmax, which is the maximum state holding period, is set for example in proportion to the estimation period TE. The limitation period is calculated according to the equation: Tmax kl - TE, where k1 represents the proportion of the limiting period Tmax over the estimation period TE. In addition, the state hold period can be controlled as a predetermined phase angle of the estimation period TE.
[0010] Load Control FIGS. 4 are flowcharts showing an example of a power-on command. The power-on command is executed by the central processing unit (CPU) 161 and is processed to cause the battery voltage VB to converge to the target voltage VT under the control of PI. The central processing unit (CPU) 161 constantly monitors the position detection signal Tp and, upon detecting Tp, starts processing from step S11. The central processing unit (CPU) 161 calculates a power generation period Pi from a first detection synchronization Tp previous and a second detection synchronization Tp previous (S11), and calculates a estimation period TEi taking into account a variation AP of the energy generation period estimated before an electrical angle of eg 720 ° according to the following equation (S12): TEi = Pi + AP - k2 where k2 represents a predetermined coefficient. For example, in the case of calculating the estimation period TE0 as shown in FIG. 2, the first previous detection synchronization Tp is equivalent to To; the second previous detection synchronization Tp is equivalent to; and the variation estimation timing AP is equivalent to 712. The CPU 161 then determines, from Tp detection intervals, a power-up phase angle limitation value eL for each on the forward side and the delay side corresponding to the energy generation period (S13). The CPU 161 then obtains the current battery voltage VB (S14) and calculates a current voltage difference AVi which is the difference between the battery voltage VB and the target voltage VT (S15). The central processing unit (CPU) 161 then calculates a power-on phase angle ei based on the value of the current voltage deviation AVi (S16) and determines whether the calculated power-on phase angle ei is within an allowable range (S17). When the power-up phase angle ei is not in the permissible range, the CPU 161 changes the power-on phase angle ei to the phase angle-limiting value of turn on eL (S18). Central processing unit (CPU) 161 then determines a power-up pattern among the reference pattern, the feed pattern, and the delay pattern based on the power-on phase angle ei, and determines a synchronization of energizing each switching element according to the determined power-on reason (S19). The CPU 161 then calculates the limiting period Tmax based on the estimation period TEi (S20). The CPU 161 then counts the timing difference described above TEi-A / 360 seconds and judges the reference timing to start the power-on period by detecting Tp (S21). At the reference timing to start the power-up period, the CPU 161 outputs a drive signal for driving each switching element according to the power-up timing determined at the start of the power-on period. step S19 (S22). The CPU 161 then judges whether the estimation period TEi ends (S23). If it is not completed, the CPU 161 judges whether Tp is detected (S24). If Tp 20 is not detected, the CPU 161 returns processing in step S22 and continues to output the drive signal. On the other hand, if Tp is detected in step S24, the CPU 161 returns the process to step S11 and repeats the next process. If the estimation period TEi ends before the detection of Tp, the central processing unit (CPU) 161 performs state maintenance and starts the counting of the time t (S25). The central processing unit (CPU) 161 then judges whether the time t reaches the limitation period Tmax (S26). In the case where t <Tmax, the CPU 161 judges whether Tp is detected (S27). If Tp is not detected, the CPU 161 returns the processing in step S26 and repeats the limiting period judgment. On the other hand, if Tp is detected in step S27, the CPU 161 returns the process to step S11 and repeats the next process. When the time t reaches the limitation period Tmax before the detection of Tp, the CPU 161 sets the short-circuit state of all the phases (S28). The CPU 161 judges then whether Tp is detected (S29), and if it is detected, the CPU 161 returns the process to step S11 and repeats the next process.
[0011] It should be noted that the flow charts shown in FIG. 4 are purely illustrative and can be any flow chart provided that the processing can be performed, such as the control of the battery voltage VB by the control of FIG. advance / delay, control of the state hold period or the setting of the short-circuit state of all phases after the end of the state hold period. In this way, when the estimation period is less than the actual energy generation period, after the end of the estimation period, the state maintenance is carried out and the charging electricity is extracted from the generator 11 It is thus possible to suppress a decrease in battery charge efficiency when a gap occurs between the power generation period and the power-on period. However, if the power generation period is long and therefore the state hold period becomes long, excessive current may flow to the switching elements. To prevent the flow of excessive current to the switching elements, the limiting period Tmax, which is the maximum state holding period, is provided and, when the state holding period reaches the limiting period Tmax, the short-circuit state of all phases is set. In the above description, the power up period is started with the descent of the position detection signal Tp as a reference. Nevertheless, the power up period can be started with the rise of the position detection signal Tp as a reference. In this case, the "Tp detection" and "the Tp input" correspond to the detection of the rise of the position detection signal Tp by the central processing unit (CPU) 161. Next Rotational Fluctuation FIG. an example of the relationship between a real rotation speed and an estimated rotational speed of the internal combustion engine, in which the estimated rotational speed corresponds to 1 / estimation period. Note that, if the generator 11 has a plurality of poles, the estimated rotational speed corresponds to 1 / (estimated rotational speed x the number of poles of the generator). In FIG. 5, the continuous line curve represents the actual rotational speed of the internal combustion engine, and the dotted line curve represents the estimated rotational speed. In addition, the upward arrow represents an opening of the throttle valve. Since there is no significant change in the opening of the throttle valve between the timing t1 and t2 and since the fluctuation of the actual rotational speed is relatively low, the rotational speed estimated on the basis of the detection signal Tp position delivered by the position detection unit 17 is substantially consistent with the actual rotational speed. Nevertheless, the rotation of a gas handle after synchronization t2 causes a major change in the opening of the throttle valve between synchronization t2 and synchronization t3. As a result, the estimated rotational speed becomes lower than the actual rotational speed due to an increase in the actual rotational speed, which results in a difference between the actual rotational speed and the estimated rotational speed.
[0012] In other words, if the energy generation period is estimated on the basis of the position detection signal Tp delivered by the position detection unit 17, when a rotational fluctuation occurs in the internal combustion engine, the actual energy generation period changes with respect to the estimated power generation period, resulting in the occurrence of a period of time during which generated electrical energy can not be efficiently stored in the battery .
[0013] Reference is made hereinafter to the amount of throttle opening change that causes a difference between the estimated energy generation period and the actual energy generation period as the "change threshold". opening ". In FIG. 5, the amount of change from opening of the throttle valve to timing t3 with respect to opening of the throttle valve at timing t2 exceeds the aperture change threshold.
[0014] Fig. 6 is a block diagram showing an example of the link for effectively charging the battery 15 as a result of rotational fluctuation. Note that identical reference signs are used for elements identical to those shown in Figure 1, and their detailed description is not repeated. Assuming that the control circuit 16 shown in FIG. 1 exists in an electronic control unit (ECU) 26, its description is omitted.
[0015] With reference to FIG. 6, the rotor 12 of the generator 11 is connected to the internal combustion engine 21 by means of gears, a chain, a belt and similar elements, and it rotates on the base of the rotation of the internal combustion engine 21. A transmission 22 is disposed between the internal combustion engine 21 and a drive wheel 25 of the vehicle. The rotation of the internal combustion engine 21 is decelerated by the transmission 22 and transmitted to the drive wheel 25. The position of the gear lever of the transmission 22 is actuated by a gearshift pedal 23 disposed on a side surface of the vehicle. The ECU 26 can detect a shift lever position of the transmission 22 through a detector 24 disposed on the transmission 22. In addition, the ECU 26 detects an operating state (rotation angle). a gas handgrip 27 disposed on a handlebar of the vehicle, as an opening of the throttle valve, by means of a detector 28 and controls the rotation of the internal combustion engine 21 according to the opening throttle valve. The transmission 22 which allows an occupant to actuate the position of the shift lever with the gearshift pedal 23 is shown, for example, in FIG. 6. Nevertheless, the transmission 22 is such that the position of the commanded gearshift by the ECU 26 in response to the shift switch actuation to the can either from a high / towards the 20 on the basis of the speed of the vehicle, the low speed disposed on the handlebars of the vehicle, OR rotation of the internal combustion engine 21, etc. Fig. 7 is a flow chart showing an example of the process for correcting the estimated power generation period. After calculating the estimation period TEi shown in FIG. 4A (S12), the correction processing is performed by the central processing unit (CPU) 161 of the control circuit 16 before calculating the limiting period T max ( S20). The central processing unit (CPU) 161 detects a variation 30 ATH of the opening of the throttle valve (S101). Note that the variation ATH is detected for example in the form of an angle of rotation of the gas handle 27 per millisecond. The central processing unit (CPU) 161 then judges whether the variation ATH exceeds the opening change threshold th described above (S102) and, if it is less than or equal to the opening change threshold (ATH th), the treatment is finished. Moreover, if the variation exceeds the opening change threshold (ATH> th), the central processing unit (CPU) 161 calculates a rotational speed Ne 10 corresponding to the rotational speed of the internal combustion engine 21 from the estimation period TEi calculated in step S12, according to the following equation (S103): Ne = k3 / TEi (2) where k3 represents a conversion coefficient of the reciprocal (rotational speed of the rotor 12) of the The central processing unit (CPU) 161 then obtains information indicating the position of the transmission shift lever 22 (S104). The CPU 161 then estimates an increment ANe of the rotational speed of the internal combustion engine 21 using mapping data 29 (S105). FIG. 8 represents an example of mapping data 29. The mapping data 29 represents the increment ANe [rpm per ms] of the rotational speed of the internal combustion engine 21 with respect to the variation ATH [deg per ms ] of the opening of the throttle valve, with the position of the gear lever of the transmission 22 as a parameter. Note that the mapping data 29 is previously measured and stored in the ROM (memory) 163 or in a similar memory. The central processing unit (CPU) 161 obtains, as the value estimated in step 5105, the increment ANe of the rotational speed corresponding to the variation ATH with reference to the curve of the mapping data 29 corresponding to the position of the transmission speed lever 22. The central processing unit (CPU) 161 then calculates a corrected estimation period TE, starting from the rotational speed calculated at step 5103 and from the increment ANe of the rotational speed obtained. in step 5105, according to the following equation (S106): TE, = k3 / (NE + ANe) (3), and the correction process is terminated.
[0016] In this way, if the variation TH of the opening of the throttle valve exceeds the open change threshold th, the treatment after step S20 in the tensioning control shown in FIGS. 4A and 4B is performed based on the corrected estimation period TE ,. Therefore, a rotational fluctuation correction of the internal combustion engine is performed over the estimated power generation period, thereby preventing a difference between the estimated power generation period and the power generation period. real energy generation. Electric energy

权利要求:
Claims (12)
[0001]
REVENDICATIONS1. Battery charging apparatus for a vehicle, characterized in that it comprises: a driving unit (14) which converts a three-phase alternating-current energy delivered by a winding of each phase of a stator (13) of a three-phase alternating current generator (11) in direct current energy using a plurality of switching elements (Qui, -, Qw2) for supplying DC power to a battery (15); a control unit (16) which controls switching between a live state and a de-energized state of each of the plurality of switching elements (Qui, -, Qw2); and a position detection unit (17) which outputs a position detection signal (Tp) indicating a position of a rotor (12) of the three-phase AC generator, the control unit (16) obtaining a period of generating next estimate energy (TE) of the three-phase AC generator based on the preceding position detection signal and determining a next turn-on period of each of the plurality of switching elements (which, (Qw2) on the basis of the estimation energy generation period, wherein the control unit (16) judges a start of the energizing period on the basis of an input of position detection signal, and if a period up to a subsequent input of the position detection signal exceeds the power-up period, during the period until the next position detection signal input, the control unit (16) com carries a holding period in which the plurality of switching elements (Qui, -, Qw2) are maintained in the energized state or in the de-energized state immediately before the period until the next input of the position detection signal exceeds the power-on period. 10
[0002]
The battery charging apparatus for the vehicle according to claim 1, wherein the holding period is limited to a predetermined period (Tmax). 15
[0003]
A battery charging apparatus for the vehicle according to claim 1 or 2, wherein an input period of the position detection signal is determined by a gap between falling edges or between rising edges of the detection signal of the vehicle. position, and the control unit (16) obtains the estimation energy generating period based on a previous input period of the position detection signal and a variation (OP) thereof. this. 25
[0004]
A battery charging apparatus for the vehicle according to claim 2, wherein, if the next input of the position detection signal is not given even after the expiration of the predetermined period, the control unit (16) switches the plurality of switching elements (Qui, -, Qw2) into a short-circuit state of all phases during the period until the next input of the position detection signal.
[0005]
The battery charging apparatus for the vehicle according to claim 2 or 3, wherein the predetermined period is changed in proportion to the estimation energy generation period.
[0006]
The battery charging apparatus for the vehicle according to any one of claims 2, 4 and 5, wherein the predetermined period is a period of a predetermined phase angle of the estimate energy generation period.
[0007]
A battery charging apparatus for the vehicle according to any one of claims 1 to 6, wherein the control unit (16) comprises a power up pattern with a preset order of switching between the energized state and the de-energized state of each of the plurality of switching elements (Qui, -, Qw2) in the power up period, and the control unit (16) determines a next power-up timing of each switching elements (Qui, -, Qw2) according to the power-on pattern at each input of the position detection signal.
[0008]
The battery charging apparatus for the vehicle according to claim 7, wherein the power-on pattern sets the power-up timing of the switching element connected to each phase of the three-phase AC generator, and control unit (16) simultaneously determines and updates the next power-up timing of the switching element connected to each phase at each input of the position detection signal.
[0009]
The battery charging apparatus for the vehicle 10 according to claim 7 or 8, wherein the control unit (16) detects a voltage (VB) of the battery (15), and controls the power-up timing on a forward side or a delay side so that the battery voltage (15) becomes a predetermined voltage (VT); the power up pattern includes an advance pattern and a delay pattern; and the control unit (16) determines the switching timing of the switching element according to the feed pattern or the delay pattern.
[0010]
The battery charging apparatus for the vehicle according to any one of claims 1 to 9, further comprising a throttle opening detector (28) for detecting a throttle opening of a throttle motor. internal combustion (21), wherein the rotor rotates on the basis of a rotation of the internal combustion engine (21), and the control unit (16) corrects the estimation energy generation period on the basis of a variation of the throttle opening.
[0011]
The battery charging apparatus for the vehicle according to claim 10, further comprising a shift lever position sensor (24) for detecting a shift lever position of a transmission (22) disposed between the combustion engine and a drive wheel (25) of the vehicle, wherein the control unit (16) corrects the estimation energy generation period based on the variation of the throttle opening and the position gear lever.
[0012]
The battery charging apparatus for the vehicle according to claim 11, wherein the control unit (16) comprises, in the form of mapping data (29), a predetermined variation of a rotational speed of the combustion engine. internally on the basis of the variation of the throttle opening and the throttle position and corrects the estimation energy generation period based on the mapping data.

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同族专利:

公开号 | 公开日

CA2880580C|2017-12-12|

DE102015201509A1|2015-08-13|

CA2880580A1|2015-08-07|

JP2015165763A|2015-09-17|

JP6301240B2|2018-03-28|

US9614397B2|2017-04-04|

US20150229159A1|2015-08-13|

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法律状态:
2016-02-29| PLFP| Fee payment|Year of fee payment: 2 |

2017-02-28| PLFP| Fee payment|Year of fee payment: 3 |

2018-02-26| PLFP| Fee payment|Year of fee payment: 4 |

2018-11-16| PLSC| Search report ready|Effective date: 20181116 |

2019-10-25| ST| Notification of lapse|Effective date: 20191006 |

优先权:

申请号 | 申请日 | 专利标题

JP2014022752|2014-02-07|

JP2014238129A|JP6301240B2|2014-02-07|2014-11-25|Battery charger for vehicle|

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