• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    charging system for electric vehicles. The present invention relates to a charging system for electric vehicles, comprising at least one charge input with an interface for exchanging energy with at least one electric vehicle, at least one energy converter, for converting energy from a power source. energy as an electrical grid to a format suitable for vehicle charging, where the energy converter is located at a remote location from the charge entrance, such as a separate room and / or separate building.
    公开号:BR112012029288B1
    申请号:R112012029288
    申请日:2011-05-18
    公开日:2020-04-07
    发明作者:Bouman Crijn
    申请人:Abb Bv；
    IPC主号:
    专利说明:

    Descriptive Report of the Invention Patent for CHARGING SYSTEM FOR ELECTRIC VEHICLES AND METHOD FOR OPERATING THE SWITCH MATRIX IN A CHARGING SYSTEM.
    [001] The present invention relates to a charging system for electric vehicles. In particular, the invention relates to equipment, where multiple vehicles can be loaded, as in the case of a regular filling station for vehicles with combustion engines.
    [002] With an increasing popularity of electric vehicles, the need for charging stations increases concomitantly, and therefore the total energy required for each available charge input, and in the case of multiple inputs, its total energy consumption.
    [003] The large consumption of energy requires energy converters with increasing energy capacity, and, as a result, larger cooling installations to prevent damage, such as overheating of its components. With a (forced) cooling installation for each energy exchange input, the charging system (or charging station) would become a noisy medium, with low energy efficiency. It is, therefore, an objective of the present invention to propose an advantageous load system with multiple inputs for this purpose.
    [004] Charging stations with a plurality of charge inputs are known in the prior art. One way to implement this is the use of an AC / DC converter followed by a DC bus where the load inputs are connected. The disadvantage of this modality lies in the fact that multiple vehicles cannot be charged at the same time, as each vehicle normally has a different input voltage. To enable charging of electric vehicles simultaneously, DC / DC converters are
    Petition 870200007038, of 1/15/2020, p. 5/28
    2/16 placed before each charge input, which will increase the cost of the charging station with multiple inputs.
    [005] Therefore, charging systems for electric vehicles are proposed, comprising a plurality of charge inputs, each with an interface for exchanging energy with at least one electric vehicle, a plurality of energy converters, to convert energy from one power source, such as an electrical network in a suitable format, to charge the vehicle, a connection matrix with switches, for connecting at least one power converter to at least one load input, at least one controller, for the control of at least one of the energy converters, and / or for the control of the switching operations of the connection matrix and the energy converter, and means of communication for exchange parameters with at least one electric vehicle.
    [006] The system, according to the invention proposes multiple advantages. First, the advantages of a system with multiple inputs (at least one, but preferably several inputs) are that they provide better functionality with less equipment, being easier and cheaper to increase with extra connections.
    [007] In a preferred embodiment, the energy converters and the connection matrix are in a different place from the loading entrance as a separate room, and / or a separate building.
    [008] The advantage of having the energy converter in a different location is that it is easier to increase with more energy capacity (without the need for excavation) the energy exchange inputs are easier to equip in a situation than user, with less technical requirements (especially regarding the size) of the energy converter, if it is placed in a room with a conditioned environment. The loading place will also not be disturbed
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    3/16 during the expansion of the load capacity.
    [009] The switchable connection matrix is implemented in order to couple each load input, simultaneously to a plurality of several converters, in such a way that, at most, one input is connected to one converter. This means that the matrix makes it possible to connect each load input simultaneously to one or more power converters, or to none. The converters can be connected to at most one load input at the same time.
    [0010] An advantage of the present invention is that the power converters, matrix and load inputs can be expanded independently of each other, the number of load inputs and the power modules do not have to be the same as when charging station has been expanded. A charging station can be installed in one location and can be expanded or even minimized depending on how often it is used. One case could be that the charging station is not used very often, and due to being in a different location from other stations, arriving vehicles will have a low state of charge. In this case, you would need a charging station with a charging input and a large energy capacity. Over the years a new city is built in the neighborhood, which will result in more electric vehicles visiting the charging station with an average state of charge. It would be worth noting to modify the charging station in this case, in a configuration with more charging stations, with the same or energy capacity or a smaller energy capacity. The present invention will be employed within the parameters described in the Dutch patent application NL 2004279, which will allow the invention to register loading sessions. Based on the recorded load sessions, the server can decide to change the power capacity or the number of load inputs. Another advantage of the present invention lies in the fact that
    Petition 870200007038, of 1/15/2020, p. 7/28
    4/16 that the charging inputs do not have a common ground, meaning that when more than one electric vehicle is connected to the charger, they will be galvanically isolated, which is desired by EV manufacturers. Another reason for convenience for galvanic isolation between vehicles is that having more than one isolation monitor on the same circuit will decrease the sensitivity of the isolation monitor.
    [0011] At the energy exchange entrance, where the user loads his vehicle, there will be less noise, visual disturbance or (inconvenience of hot air).
    [0012] The system according to the invention becomes more efficient when the location other than that of the load input comprises a plurality of electrical converters. In this case, the converters share (part of) the cooling system and the location they can design, and the total converter can adjust to the total power requirements of all inputs.
    [0013] In one embodiment, the location other than that of the cargo entrance comprises climatic conditioning, such as an air or liquid based cooling system, a heating pump system or a heat exchange system, to keep heat away electrical converters, or to heat the systems within the conditioned environment, if the temperature is below a certain limit. The cooling system can be a fan that blows air into or out of the conditioned room. The cooling system can also be a two-part system, such as a pump heating system. Heat can be extracted from energy converters or from the room being transported (for example, by liquid or air), to a second part of the cooling system outside the conditioned room. In this way, the energy converter system can be adapted more easily.
    [0014] This second part lends itself to exchanging heat with the ambi
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    5/16 external, for this purpose, it can be on top of a charging station roof, or in a building (shopping mall) close to the charging station, in order to prevent noise and hot air from disturbing users. [0015] Refrigeration can be part of a transformer or placed in a home. The heat from the energy converters can be used for other purposes, such as heating a building or heating water. Heat can be transferred to storage, such as a hot water tank, or underground thermal storage.
    [0016] The conditioned room may be an industrial office, a building, part of a building or a room service (for example, only with access to authorized personnel) it may be that the conditioned environment is not accessible through a door or has a door locked.
    [0017] The term packaged means at present, among other things, protected against at least rain or sun. The conditioned environment can be one or more of residences / buildings with the transformer. It can have separate compartments for transformers connected to the grid and power converters, or a transformer house can be used without a transformer. In addition, two houses can be used, one with a transformer and the other with energy converters.
    [0018] The conditioned room can be at least 2 meters away from at least one of the stations. The conditioned room can be underground, be on a roof and can be characterized by the fact that they have a wrap that increases the International Protection coefficient (as indicated by the international standard IEC 60529) of the system. This may be due to openings in the walls of the packaged room that are smaller than the openings in the energy converters, or because there is a spacing between the converters.
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    6/16 energy sores and the walls of the room packed to prevent people from touching the energy converters.
    [0019] The conditioned room may comprise an air conditioning system and / or a heater. Great efficiency is obtained when climate conditioning is configured for direct operation on the converter or converters, instead of the entire room. The distinct location may be a transformer residence or form part of it, and the converters and transformer may be located in separate rooms within the distinct location.
    [0020] Alternatively, energy converters can be placed outside, or in the case of a plurality of energy exchange inputs, inside one of the inputs or below (at the base of this) one of the load inputs. The term input is used here to indicate both energy exchange functionality with a vehicle such as the physical device, stopped at the charging station.
    [0021] The energy converters can be unidirectional or multidirectional converters with one or more AC or DC inputs and one or more AC or DC outputs. In a preferred embodiment, these outputs can be independently controlled. In the case of a single energy converter, the energy converter will have at least two outputs. In the case of multiple energy converters, the outputs of the converters will be connected to a connection matrix. The connection matrix has multiple inputs and multiple outputs. Variant configurations of energy converters suitable for the system according to the present invention are described in Dutch patent application NL 2004279 by the same depositor, now incorporated by reference to the present.
    [0022] The conditioned room may also contain one or more energy storage systems such as battery systems, systems with capacitor, steering wheels or any other system, which may
    Petition 870200007038, of 1/15/2020, p. 10/28
    7/16 store energy. These energy storage systems can be coupled with energy converters to distribute a temporary surge of energy or to store electricity at a time that is convenient. In a specific modality, the cooling system present in the conditioned room can be used to cool or heat the energy storage system, or to maintain it at a given defined temperature. This can be very beneficial for the life of the storage medium, especially in the case of batteries. The conditioned room or systems present in the conditioned room can also be heated when the temperature drops below a certain limit.
    [0023] In a preferred embodiment, a plurality of power converters are coupled to a plurality of load inputs by a switchable switch connection matrix, which can be located within the distinct location. A connection matrix like this is also described in more detail in the Dutch patent application
    NL 2 004 279.
    [0024] In a preferred mode, the connection matrix has four output connections being designed to transfer a certain maximum amount of energy per connection, for example, 50kw. At the same time, a power converter can be designed to provide a maximum energy ratio, also 50 kW for example. When operating in the field, the matrix will receive a maximum of 50 kW from the converter and will distribute this 50 kW over the 4 outputs. When the energy converter is increased by adding a second converter, also with an energy of 50 kW results in a combined energy of 100 kW, which may mean that the power limit of the connection matrix will still remain 50 kW per connection. In this case, only the average energy supplied by the 4 outputs
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    8/16 will increase.
    [0025] In another preferred mode of the situation exposed above, the connection matrix can be further improved to provide more energy per output, that is, 100 kW, which can be done by adding and / or replacing components (such as fuses) within the connection matrix, or by total replacement of the connection matrix.
    [0026] The charging system according to any of the described modalities, can comprise a controller, which is operated to control the proportion of heat generated, in case the heat is used for other purposes. Battery charging speeds can be increased, for example, temporarily, when heat (for example, in the form of hot water) is required for an external system. The heat generated is, in that case, controlled by controlling the output energy.
    [0027] This controller can be coupled to converters, connection controllers, connection matrices, and the energy storage system via the internet. The controller can optimize and influence the energy flow for each output of the connection matrix based on the local regulations.
    [0028] In addition, it can be equipped with at least one connection controller, this connection controller being configured to control security settings of the power supply to at least one input. Preferably, each input comprises a connection controller, but a connection controller is thought to serve as a server for a plurality of power exchange inputs.
    [0029] The connection controller can be used to adapt a load input to a load standard such as CHAdeMO or J1772. For example, security systems and communication hardware can be included in the communication controller.
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    9/16 [0030] This connection controller is described in more detail in Dutch patent application NL 2 004 350 by the same depositor. [0031] The total system may also contain a special system or method in order to compensate for the length of the cable between the remote charging station and the conditioned environment. As the wires extend further, the system will experience negative effects such as a voltage drop in the cable. One method of solving this problem is to use cables with a large diameter. In some situations this may not be ideal, due to the extra cost of thicker cables. Therefore, another method could be used such as the use of a control system which controls the output voltage of the energy converters, based on the measured voltage close to the load inputs, and this could be implemented through a device. meter inside or near the charging station, or even via a data communication link to a measuring device inside the vehicle such as a BMS system.
    [0032] The method for operating the switch matrix comprises the steps of assigning a priority for each input based on at least one parameter, determining the requested power at each input, distributing the power modules between the inputs, based on the priority and in the requested energy, repeat the above steps each time an event occurs.
    [0033] One way of executing the aforementioned method is as follows: Each time an event occurs, the controller starts with assigning a priority for each input of the charging station based on a parameter. Some non-limiting examples of an event would be a vehicle that connects or disconnects from a charging station, the vehicle's energy demand that changes substantially during charging or when the user changes charging preferences. The parameter can be the time of arrival of the vehicle, the type of account
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    10/16 that the driver of the vehicle has, the time entered in the system, by the user for the preferred direction. The energy requested at each input is determined by the controller. The power modules are distributed among the inputs based on the priority and the energy requested by the inputs.
    [0034] An example of a scene in which the aforementioned method can be applied is as follows: Vehicles connect to a charging station one at a time. The vehicle that arrives first takes the highest priority, and the vehicle that arrives last, the lowest priority. Based on the priority, the first vehicle is supplied with sufficient energy modules to satisfy its energy demand, and the remaining modules (if any remain) are given to the other inputs (vehicles) based on their priority.
    [0035] In another example only, a part of the modules are distributed according to the priority, meaning that a number of modules are distributed equally among the inputs, and the remaining modules are assigned according to the priority. The invention will now be explained in more detail with reference to the figures, in which: [0036] figures 1a-d show the preceding technique;
    [0037] figure 2 shows a first embodiment of the charging system according to the present invention;
    [0038] figure 3 shows a second embodiment of the charging system according to the present invention;
    [0039] figure 4 shows a third embodiment of a charging system according to the invention;
    [0040] Figures 5a-5d illustrate schematic views of the power system according to the present invention;
    [0041] Figures 6a, 6b show flowcharts of a process according to the invention;
    [0042] Figure 7 shows the preferred mode of the
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    11/16 charge;
    [0043] figure 8 shows another embodiment according to the invention, with a detailed implementation of the connection matrix;
    [0044] figure 9 shows another embodiment according to the invention with a detailed implementation of the connection matrix; [0045] figure 10 shows a practical programming of the invention. [0046] Figure 1a shows a charging station with a plurality of charge inputs known from the prior art, which consist of an AC / DC converter followed by a DC vehicle and a plurality of switches that are used where the cargo entrances and therefore the vehicles connected to them. The disadvantage of this modality is that the various vehicles cannot be charged simultaneously, because each vehicle has a different voltage at its load input. In the prior art, DC / DC converters are used to charge electric vehicles with different input voltages at the same time (figure 1b), which will increase the cost of the multi-input charging station.
    [0047] Figure 1c shows a charging station with multiple energy converters known in the prior art. Although the power converter is modular and the power capacity can be expanded, it is not possible to charge multiple electric vehicles at the same time.
    [0048] Figure 1d shows a multi-entry charging station known in the prior art. It is possible to charge electric vehicles simultaneously from this charging station, however due to the hardware configuration, the number of charge inputs will always be equal to the number of power modules.
    [0049] Figure 2 shows a first modification of the charging system 1 according to the present invention, composed of charge inputs 2-5 with a 2'-5 interface for energy exchange with at least
    Petition 870200007038, of 1/15/2020, p. 15/28
    12/16 in an electric vehicle, energy converters 6, 7, for converting energy from an energy source such as a power grid (not shown) to a suitable format for vehicle charging. The energy converters are located in a different location 8 from the load inputs 2-5, formed by a separate building 8.
    [0050] Building 8 further comprises a connection box 9 comprising a plurality of connection controllers, as well as spaces 10 and 11, intended for future use, for example, when energy consumption increases. In this mode, the charging system can be extended without requiring modifications to the energy exchange inputs.
    [0051] Figure 3 shows an alternative embodiment 20 of a charging system according to the present invention, comprising energy exchange inputs 21-24, where an energy converter 25 is located below the energy exchange inputs 22.
    [0052] Figure 4 shows a mode 30, in which the connection controllers are placed inside a connection box 32 inside the load input 31, whose connection box 32 also includes a controller. This modality has the advantage that the terminal box 32 can be completely replaced, in the case of an improvement (for example, an increase in the proportion of connection controllers). Because the controller is directly associated with the connection controllers, the controller can be pre-programmed to cooperate with the right number of connection controllers.
    [0053] Figure 5a shows a mode 41 of the load input 43, to which a terminal box 44 is connected via interface 48. The terminal box 44 comprises a second interface 46 coupled with a corresponding interface 49 of a converter energy 45. This energy converter comprises an interface 49 for coupling an additional energy converter if necessary. 870200007038, from 01/15/2020, pg. 16/28
    13/16 laugh more energy.
    [0054] Figure 5b shows a mode 42 of the load input 43 of figure 4a, which is now equipped with an additional energy converter 50. The energy converter 50 thereof comprises an interface 51 and additionally comprises an interface 52 for the future coupling more power converters.
    [0055] Figure 5c shows another example, in which a second load input 57 is present, and coupled to an interface 56 of a second terminal box 54, which is coupled 55 to the first terminal box 44. Thus, two load inputs 43, 57 can be connected by the same power converter 45.
    [0056] Figure 5d shows yet another example, where load inputs 43 and 47 are both coupled to interface 48 of terminal box 44, which can be connected to any power converters 45 or 59, which are coupled to the box connection 44 through the respective interfaces 47, 60 and 46.
    [0057] Figure 6a shows a first example with a flow chart of use of the present invention. First, a vehicle connects to the energy exchange input 1. Secondly, a second vehicle connects to the energy exchange input 2. At the same time the planning optimizer sends information to a processing device or controller of data. (The input of the optimizer can consist of several items: battery data; network data, service requirements, etc.) Thirdly, the data processing device together with the controllers in the system decides which is the best charging strategy and energy distribution based on parameters such as: planner input, maximum power and converter specifications, climate control specifications, connection matrix specifications, input specifications, and known data about vehicles or of your batteries and other data poPetição 870200007038, from 1/15/2020, p. 17/28
    14/16 tencials.
    [0058] Figure 6b shows another example, in which, first, a vehicle connects to the energy exchange input. Second, a second vehicle connects to the energy exchange input. Third, the local system controller, decides which is the best energy charging and distribution strategy, based on parameters such as maximum energy and converter specifications, connection matrix specifications, climate control system specifications, specifications entry and known data about vehicles or their batteries and other potential data.
    [0059] The connection controller can be part of the charging station. The connection controller and the cable and connector can be removed from the charging station to be replaced in one piece. When using a power converter system with multiple outputs, with a smaller number of charging stations, the multiple outputs can be connected to a single connection controller. When updating a larger number of charging stations, some connection can be split. In some cases, a single connection controller can be connected to multiple charging stations, or a single connection controller can be connected to a single charging station, which has multiple connections (charging cable and charging connector).
    [0060] The main feature of the charging station is that it is located at a distance from the energy converters. It is placed next to one or more points (parking) for vehicles (for example, a gas station / charging station or a store). They can stay indoors (for example, parking garage). The charging station can be connected (from the bottom or top power converters (not shown in the image). In addition, AC power, for example, for electronics inside the charging station or for an AC charging outlet, can be available through the same coPetition 870200007038, from 1/15/2020, page 18/28
    15/16 nexus or a different connection.
    [0061] The charging station will normally have a cable handling system and a feature to place the connectors in a safe and dry place.
    [0062] A subsystem, such as a user interface, payment terminal, user identification system, user entry system, or digital transmission system, can be connected to the communication line that forms a part of the cable (s) (s) that are connected to the charging station.
    [0063] The power exchange input can have one or multiple load connectors, where these connectors can supply AC or DC load current, or both.
    [0064] Figure 7 shows a charging system where a plurality of energy converters are connected with load inputs by a connection matrix equipped with switches. Using a switch connection matrix, several electric vehicles can be charged simultaneously, without the need for extra converters. The connection matrix is controlled by a controller. Information about the charging session is sent from the charging station to the server, where this server can decide whether to expand or decrease the degree of the charging station. It is also possible that the server or the controller decides to disconnect each of the converter modules, or face inputs, in case of malfunction.
    [0065] Figure 8 shows a detailed modality of the connection matrix placed between the energy converters and the charging stations. By switching off the switches, one or more power converters can be connected to a charging station. The array makes it possible to charge a plurality of electric vehicles simultaneously without extra DC / DC converters. In order to expand the number of energy converters or charging stations, the matrix also needs to
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    16/16 be expanded. The matrix can be extended by adding switch modules each containing two switches that are controlled by a local controller.
    [0066] Figure 9 shows another charging system in which the energy converters are connected with the load inputs by a different mode of connection hue with switches.
    [0067] Figure 10 shows three configurations of the charging station with two charging stations. The first configuration consists of 20 kW modules, the second of 10 kW modules and the third is a combination of the two. Each of the converter modules and load inputs is selectable by the switches. The connection controllers are implemented at the load inputs, and also include a pair of switches that are used for selecting the load inputs. In this way, the aforementioned matrix is distributed equally in the loading configuration. A connection controller is a device comprising means for communicating with the electric vehicle and switches for connecting or disconnecting the charging station to the electric vehicle.
    权利要求:
    Claims (10)
    [1]
    1. Charging system for electric vehicles, which comprises,
    - a plurality of charge inputs (2, 3, 4, 5), each with an interface (2 ', 3', 4 ', 5') for energy exchange with at least one electric vehicle, characterized by the fact that who still understands,
    - a plurality of energy converters (6, 7), for converting energy from an energy source, such as an electrical network, to a format suitable for charging the vehicle,
    - a switchable connection matrix for connecting at least one power converter (6, 7) to at least one load input (2, 3, 4, 5),
    - at least one controller, for controlling at least one of the energy converters (6, 7), and / or for controlling the switching operations of the connection matrix and the energy converter (6, 7),
    - means of communication for exchange parameters with at least one electric vehicle, with
    - the at least one energy converter (6, 7) and the connection matrix are in a different location (8) from that of the load input (2, 3, 4, 5).
    [2]
    2. Charge system according to claim 1, characterized by the fact that the location (8) distinct from that of the charge input (2, 3, 4, 5) comprises at least one energy converter (6, 7) with at least two DC outputs on each of the at least one power converter (6, 7).
    [3]
    3. Load system, according to claim 1 or 2, characterized by the fact that the different location (8) from that of the load entrance (2, 3, 4, 5) is a substation or part of it.
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    2/3
    [4]
    4. Load system according to claim 1 or 2, characterized by the fact that the location (8) distinct from that of the load entrance (2, 3, 4, 5) further comprises an energy storage system.
    [5]
    5. Charging system according to claim 3, characterized by the fact that the plurality of energy converters (6, 7) and the transformer are located in separate rooms within the different location (8) from that of the load input (2 , 3, 4, 5).
    [6]
    6. Charging system according to claim 1, characterized by the fact that the energy converter (6, 7) is physically arranged below a load input (2, 3, 4, 5).
    [7]
    7. Load system according to claim 1, characterized by the fact that the controller is an internal controller in the connection matrix to control the operation of said connection matrix.
    [8]
    8. Charging system, according to claim 1 or 7, characterized by the fact that the connection matrix can be controlled based on the input of a system connected to the internet or computer implemented method.
    [9]
    9. Charging system, according to claim 7 or 8, characterized by the fact that the controller is coupled to the plurality of energy converters (6, 7) via the internet from a different location (8) from that of the load input ( 2, 3, 4, 5).
    [10]
    10. Method for operating the switch matrix in a charging system, as defined in claim 1, characterized by the fact that it comprises the steps of,
    a) assign a priority to each entry (2, 3, 4, 5) based on at least one parameter;
    b) determine the energy requested for each input (2, 3,
    4, 5);
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    3/3
    c) distribute the power modules between the inputs (2, 3,
    4, 5) based on priority and requested energy; and
    d) repeat steps a-c.
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    同族专利:
    公开号 | 公开日
    CA2797507C|2016-05-10|
    WO2011145939A2|2011-11-24|
    TW201223065A|2012-06-01|
    CA2797507A1|2011-05-18|
    EP2572431B1|2014-08-20|
    US20180212438A1|2018-07-26|
    US20130069592A1|2013-03-21|
    TWI581540B|2017-05-01|
    ES2497591T3|2014-09-23|
    JP2013529052A|2013-07-11|
    RU2012154929A|2014-06-27|
    EP2572431A2|2013-03-27|
    CN102906959B|2016-02-10|
    BR112012029288A2|2016-07-26|
    CN102906959A|2013-01-30|
    NL2004746C2|2011-11-22|
    WO2011145939A9|2012-08-09|
    WO2011145939A3|2012-09-27|
    RU2520616C1|2014-06-27|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-06-25| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2019-10-29| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-02-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-04-07| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 18/05/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    NL2004746A|NL2004746C2|2010-05-19|2010-05-19|Charging system for electric vehicles.|
    PCT/NL2011/050341|WO2011145939A2|2010-05-19|2011-05-18|Charging system for electric vehicles|
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