Electric vehicle charging method and device based on charging device, charging device and storage medium

Abstract

The embodiment of the invention provides an electric vehicle charging method and device based on a charging device, the charging device and a storage medium. Relates to the technical field of battery charging. The method comprises the steps that in response to connection operation and charging confirmation operation of a connector of the charging device, a refrigeration / heating request sent by a battery of the electric vehicle is obtained; according to the connection operation, connectors of the charging pile and the liquid cooling pile are connected to the electric vehicle. According to the refrigerating / heating request, a target mode is determined; wherein the target mode is a refrigeration mode or a heating mode. According to the target mode, the pile end liquid cooling unit and / or the vehicle end liquid cooling unit are / is controlled to execute the target operation, and charging is completed; wherein the target operation is refrigeration operation or heating operation. The method is used for achieving the effect of improving the charging efficiency of the electric vehicle.

Description

Technical Field

[0001] The present application relates to the technical field of battery charging, and in particular to a charging method, device, charging device and storage medium for an electric vehicle based on a charging device. Background Art

[0002] At present, heavy truck is the abbreviation of heavy truck. This is an authentic, traditional, and informal name for heavy trucks and semi-trailer tractors, including various special vehicles (sprinklers, fire trucks, road cleaning trucks, oil tankers, mixer trucks, etc.), dump trucks (earth-moving trucks, all with lifts), trucks (for transporting goods, including livestock), and some rare off-road vehicles (mostly military). Heavy trucks account for a large proportion of our daily life and work.

[0003] In the prior art, electric vehicles such as heavy trucks are usually equipped with vehicle-side refrigeration equipment, which can heat or cool the battery when it is overcooled or overheated.

[0004] However, in the existing technology, the power of the vehicle-side refrigeration equipment is relatively small, while the charging demand and cooling and heating demand of heavy trucks and other vehicles are extremely large, which will lead to slow cooling and heating speed, and then cause charging to take a long time and have low charging efficiency. Summary of the invention

[0005] The embodiments of the present application provide an electric vehicle charging method, device, charging device and storage medium based on a charging device, so as to achieve the effect of improving the charging efficiency of the electric vehicle.

[0006] In a first aspect, an embodiment of the present application provides an electric vehicle charging method based on a charging device, wherein the charging device is provided with a charging pile and a liquid cooling pile, the liquid cooling pile is provided with a pile-end liquid cooling unit, the charging pile and the liquid cooling pile are respectively provided with a connector for connecting an electric vehicle; the electric vehicle is provided with a vehicle-end liquid cooling unit; the method comprises:

[0007] In response to the connection operation of the connector of the charging device and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained; wherein the connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively;

[0008] Determine a target mode according to the cooling / heating request; wherein the target mode is a cooling mode or a heating mode;

[0009] According to the target mode, the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit are controlled to perform a target operation and complete charging; wherein the target operation is a cooling operation or a heating operation.

[0010] In a possible implementation manner, determining a target mode according to the cooling / heating request includes:

[0011] Determining an actual charging current value, an actual battery core temperature value, and an actual coolant temperature value of the electric vehicle according to the cooling / heating request;

[0012] According to the actual charging current value and the actual battery core temperature value, it is determined that the target mode is the cooling mode.

[0013] In a possible implementation manner, determining a target mode according to the cooling / heating request includes:

[0014] Determine actual parameter values ​​of the electric vehicle according to the cooling / heating request; wherein the actual parameter values ​​include actual charging current value, actual battery core temperature value and actual coolant temperature value;

[0015] According to the actual charging current value, the actual battery core temperature value and the actual coolant temperature value, it is determined that the target mode is a cooling mode.

[0016] In a possible implementation manner, determining the target mode as the cooling mode according to the actual charging current value, the actual battery core temperature value, and the actual coolant temperature value includes:

[0017] According to a mapping relationship between a preset actual parameter value and a cooling mode, determining that the target mode is a single cooling mode or a combined cooling mode;

[0018] Among them, the separate cooling mode is that the pile end liquid cooling unit or the vehicle end liquid cooling unit performs cooling operation; the combined cooling mode is that the pile end liquid cooling unit and the vehicle end liquid cooling unit perform cooling operation.

[0019] In a possible implementation manner, determining the target mode as the combined cooling mode according to a mapping relationship between a preset actual parameter value and a cooling mode includes:

[0020] If it is determined that the actual charging current value is greater than or equal to a preset current threshold, and the actual battery core temperature value is greater than a preset first battery core temperature threshold, and the actual coolant temperature value is greater than or equal to a preset coolant threshold, then the target mode is determined to be a combined cooling mode;

[0021] If it is determined that the actual charging current value is greater than or equal to a preset current threshold, and the actual battery core temperature value is greater than a preset first battery core temperature threshold, and the actual coolant temperature value is less than a preset coolant threshold, then determining that the target mode is a combined cooling mode;

[0022] If it is determined that the actual charging current value is greater than or equal to the current threshold, and the actual battery cell temperature value is between a preset first battery cell temperature threshold and a preset second battery cell temperature threshold, and the actual coolant temperature value is greater than or equal to the preset coolant threshold, then the target mode is determined to be the combined cooling mode.

[0023] In a possible implementation manner, the charging pile is provided with a pile-end charging connector, and the pile-end liquid cooling unit is provided with a pile-end liquid cooling connector; and determining the target mode according to the cooling / heating request includes:

[0024] If it is determined that the connection operation is to connect both the pile-end charging connector and the pile-end liquid cooling connector of the charging device to the electric vehicle, then the target mode is determined to be the combined heating mode.

[0025] In a possible implementation manner, controlling the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit to perform a target operation according to the target mode includes:

[0026] If the target mode is the single cooling mode, the pile end liquid cooling unit is controlled to perform cooling operation;

[0027] If the target mode is the combined cooling mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform cooling operation;

[0028] If the target mode is the combined heating mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform a heating operation;

[0029] Among them, the separate cooling mode and the combined cooling mode are both determined according to the actual charging current value, the actual battery core temperature value and the actual coolant temperature value of the electric vehicle; the combined heating mode is determined according to the charger connected by the connection operation.

[0030] In a possible implementation, the charging pile is provided with a pile-end charging connector, and the pile-end liquid cooling unit is provided with a pile-end liquid cooling connector; in response to a connection operation of the connector of the charging device and a charging confirmation operation, obtaining a cooling / heating request issued by the battery of the electric vehicle includes:

[0031] In response to the connection operation of the pile-end charging connector and the pile-end liquid cooling connector, and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained.

[0032] In a second aspect, an embodiment of the present application provides an electric vehicle charging device based on a charging device, wherein the charging device is provided with a charging pile and a liquid cooling pile, the liquid cooling pile is provided with a pile-end liquid cooling unit, the charging pile and the liquid cooling pile are respectively provided with a connector for connecting an electric vehicle; the electric vehicle is provided with a vehicle-end liquid cooling unit; the device comprises:

[0033] An acquisition module, configured to acquire a cooling / heating request issued by a battery of the electric vehicle in response to a connection operation of a connector of the charging device and a charging confirmation operation; wherein the connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively;

[0034] A determination module, configured to determine a target mode according to the cooling / heating request; wherein the target mode is a cooling mode or a heating mode;

[0035] The control module is used to control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit according to the target mode, perform the target operation, and complete the charging; wherein the target operation is a cooling operation or a heating operation.

[0036] In a possible implementation, the determining module includes:

[0037] A first determining unit, configured to determine actual parameter values ​​of the electric vehicle according to the cooling / heating request; wherein the actual parameter values ​​include an actual charging current value, an actual battery core temperature value, and an actual coolant temperature value;

[0038] The second determining unit is used to determine that the target mode is a cooling mode according to the actual charging current value, the actual battery core temperature value and the actual coolant temperature value.

[0039] In a possible implementation manner, the second determining unit includes:

[0040] A determination subunit, configured to determine, according to a mapping relationship between a preset actual parameter value and a cooling mode, whether the target mode is a single cooling mode or a combined cooling mode;

[0041] Among them, the separate cooling mode is that the pile end liquid cooling unit or the vehicle end liquid cooling unit performs cooling operation; the combined cooling mode is that the pile end liquid cooling unit and the vehicle end liquid cooling unit perform cooling operation.

[0042] In a possible implementation manner, the determining subunit is specifically configured to:

[0043] If it is determined that the actual charging current value is greater than or equal to a preset current threshold, and the actual battery core temperature value is greater than a preset first battery core temperature threshold, and the actual coolant temperature value is greater than or equal to a preset coolant threshold, then the target mode is determined to be a combined cooling mode;

[0044] If it is determined that the actual charging current value is greater than or equal to a preset current threshold, and the actual battery core temperature value is greater than a preset first battery core temperature threshold, and the actual coolant temperature value is less than a preset coolant threshold, then determining that the target mode is a combined cooling mode;

[0045] If it is determined that the actual charging current value is greater than or equal to the current threshold, and the actual battery cell temperature value is between a preset first battery cell temperature threshold and a preset second battery cell temperature threshold, and the actual coolant temperature value is greater than or equal to the preset coolant threshold, then the target mode is determined to be the combined cooling mode.

[0046] In a possible implementation manner, the charging pile is provided with a pile-end charging connector, and the pile-end liquid cooling unit is provided with a pile-end liquid cooling connector; the determination module is specifically used to:

[0047] If it is determined that the connection operation is to connect both the pile-end charging connector and the pile-end liquid cooling connector of the charging device to the electric vehicle, then the target mode is determined to be the combined heating mode.

[0048] In a possible implementation manner, the control module is specifically used to:

[0049] If the target mode is the single cooling mode, the pile end liquid cooling unit is controlled to perform cooling operation;

[0050] If the target mode is the combined cooling mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform cooling operation;

[0051] If the target mode is the combined heating mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform a heating operation;

[0052] Among them, the separate cooling mode and the combined cooling mode are both determined according to the actual charging current value, the actual battery core temperature value and the actual coolant temperature value of the electric vehicle; the combined heating mode is determined according to the charger connected by the connection operation.

[0053] In a possible implementation, the charging pile is provided with a pile end charging connector, and the pile end liquid cooling unit is provided with a pile end liquid cooling connector; the acquisition module is specifically used to:

[0054] In response to the connection operation of the pile-end charging connector and the pile-end liquid cooling connector, and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained.

[0055] In a third aspect, an embodiment of the present application provides a charging device, including: a memory, a processor;

[0056] The memory stores computer-executable instructions;

[0057] The processor executes the computer-executable instructions stored in the memory, so that the processor executes various possible implementations of the first aspect as described above.

[0058] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement various possible implementation methods of the first aspect above.

[0059] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements various possible implementation methods of the first aspect above.

[0060] The electric vehicle charging method, device, charging device and storage medium based on the charging device provided in the embodiment of the present application obtain the cooling / heating request issued by the battery of the electric vehicle in response to the connection operation of the connector of the charging device and the charging confirmation operation; wherein the connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively. According to the cooling / heating request, the target mode is determined; wherein the target mode is a cooling mode, or a heating mode. According to the target mode, the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit are controlled to perform the target operation and complete the charging; wherein the target operation is a cooling operation, or a heating operation. In this scheme, the charging device and the whole vehicle can control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit according to the target mode to perform the target operation, and have the combined cooling and heating functions, support the super-fast charging requirements of heavy-duty truck batteries, and achieve the effect of improving the charging efficiency of electric vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0062] Figure 1 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 1 ;

[0063] Figure 2A schematic diagram of another electric vehicle charging method based on a charging device provided in an embodiment of the present application Figure 2 ;

[0064] Figure 3 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 3 ;

[0065] Figure 4 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 3 ;

[0066] Figure 5 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 4 ;

[0067] Figure 6 A schematic diagram of the architecture of an electric vehicle charging method based on a charging device provided in an embodiment of the present application;

[0068] Figure 7 A schematic diagram of the structure of an electric vehicle charging device based on a charging device provided in an embodiment of the present application;

[0069] Figure 8 A schematic diagram of the structure of another electric vehicle charging device based on a charging device provided in an embodiment of the present application;

[0070] Fig. 9 A schematic diagram of the structure of a charging device provided in an embodiment of the present application.

[0071] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0072] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0073] At present, heavy truck is the abbreviation of heavy truck. This is an authentic, traditional, and informal name for heavy trucks and semi-trailer tractors, including various special vehicles (sprinklers, fire trucks, road cleaning trucks, oil tankers, mixer trucks, etc.), dump trucks (earth-moving trucks, all with lifts), trucks (for transporting goods, including livestock), and some rare off-road vehicles (mostly military). Heavy trucks account for a large proportion of our daily life and work.

[0074] In one example, heavy trucks and other electric vehicles are usually equipped with vehicle-side refrigeration equipment, which can heat or cool the battery when it is too cold or overheated. However, in the prior art, the power of the vehicle-side refrigeration equipment is relatively small, while the charging demand, cooling and heating demand of heavy trucks and other vehicles are extremely large, which will lead to slow cooling and heating speed, and then lead to longer charging time and low charging efficiency.

[0075] In combination with the above scenarios, it can be seen that in the prior art, there is a technical problem that the charging efficiency of electric vehicles such as heavy trucks is low.

[0076] The present application provides an electric vehicle charging method based on a charging device. The charging device and the whole vehicle can control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit according to the target mode to perform target operations. It has combined cooling and heating functions, supports the super-fast charging needs of heavy-duty truck batteries, and solves the technical problem of low charging efficiency of heavy-duty trucks and other electric vehicles.

[0077] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0078] Figure 1 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 1 ,like Figure 1 As shown, the charging device is provided with a charging pile and a liquid cooling pile, the liquid cooling pile is provided with a pile-end liquid cooling unit, the charging pile and the liquid cooling pile are respectively provided with connectors for connecting an electric vehicle; the electric vehicle is provided with a vehicle-end liquid cooling unit; the method comprises:

[0079] S101. In response to a connection operation of a connector of a charging device and a charging confirmation operation, a cooling / heating request issued by a battery of an electric vehicle is obtained; wherein the connection operation is to connect the connectors of a charging pile and a liquid cooling pile to the electric vehicle, respectively.

[0080] For example, the execution subject of this embodiment can be a charging device, or a terminal device, or a sensitive word data processing device or device, or other devices or equipment that can execute this embodiment, and there is no limitation on this. In this embodiment, the execution subject is introduced as a charging device.

[0081] First, the charging device is provided with a charging pile and a liquid cooling pile. Since the charging device can realize fast charging, it can also be called a super fast charging device, etc., and there is no limitation on this. The charging pile includes a pile-end charging connector, and the pile-end charging connector is a charging gun. The liquid cooling pile is provided with a pile-end liquid cooling unit, a TMS controller, a pile-end liquid cooling connector, and an electronic shut-off valve; the pile-end liquid cooling unit includes a compressor, a condenser, an expansion valve, a heat exchanger, a PTC, an expansion tank, an electronic water pump, a temperature sensor, and a pressure temperature sensor, so the pile-end liquid cooling unit can provide both cooling and heating for electric vehicles. Electric vehicles refer to vehicles that need to be charged, such as heavy trucks, etc. Electric vehicles include a vehicle-end thermal management controller (i.e., an on-board thermal management system, TMS), a vehicle-end liquid cooling unit, an electronic shut-off valve, a vehicle-end liquid cooling connector, and a vehicle-end charging connector. Therefore, the charging connector includes a pile-end charging connector and a vehicle-end charging connector, and the liquid cooling connector includes a pile-end liquid cooling connector and a vehicle-end liquid cooling connector. The charging connector and the liquid cooling connector are connectors for connecting electric vehicles, respectively.

[0082] In this step, based on the connection operation of the connector of the charging device and the charging confirmation operation performed by the user, the cooling / heating request issued by the battery of the electric vehicle is obtained. The connection operation is to connect the charging connector at the end of the charging pile and the end of the liquid cooling pile to the electric vehicle respectively; the charging confirmation operation is an operation issued by the user in the user graphical interface of the charging device, or an operation issued in the user graphical interface at the end of the electric vehicle, or it can also be an operation issued by the user scanning the QR code of the charging device and entering the user graphical interface displayed on a terminal device such as a mobile phone, and there is no limitation on this.

[0083] S102. Determine a target mode according to a cooling / heating request; wherein the target mode is a cooling mode or a heating mode.

[0084] Exemplarily, the charging device determines the target mode to be the cooling mode according to a cooling request, or determines the target mode to be the heating mode according to a heating request.

[0085] S103. According to the target mode, control the liquid cooling unit at the pile end and / or the liquid cooling unit at the vehicle end to perform the target operation and complete the charging; wherein the target operation is a cooling operation or a heating operation.

[0086] Exemplarily, the charging device can control the liquid cooling unit at the end of the charging station to perform the target operation and complete the charging according to the target mode. Alternatively, the charging device can control the liquid cooling unit at the end of the charging station to perform the target operation and complete the charging according to the target mode. Alternatively, the charging device can jointly control the liquid cooling unit at the end of the charging station and the liquid cooling unit at the end of the charging station to perform the target operation and complete the charging according to the target mode. The target operation is a cooling operation or a heating operation.

[0087] The electric vehicle charging method based on the charging device provided in the embodiment of the present application obtains the cooling / heating request issued by the battery of the electric vehicle in response to the connection operation of the connector of the charging device and the charging confirmation operation; wherein the connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively. According to the cooling / heating request, the target mode is determined; wherein the target mode is a cooling mode, or a heating mode. According to the target mode, the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit are controlled to perform the target operation and complete the charging; wherein the target operation is a cooling operation, or a heating operation. In this scheme, the charging device and the whole vehicle can control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit according to the target mode to perform the target operation, and have the combined cooling and heating functions, support the super-fast charging requirements of heavy-duty truck batteries, and achieve the effect of improving the charging efficiency of electric vehicles.

[0088] Figure 2 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 2 ,like Figure 2 As shown, in this embodiment Figure 1 Based on the embodiment, a method for charging an electric vehicle based on a charging device is described in detail, and the method includes:

[0089] S201. The charging pile is provided with a pile-end charging connector, and the pile-end liquid cooling unit is provided with a pile-end liquid cooling connector; in response to the connection operation between the pile-end charging connector and the pile-end liquid cooling connector, and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained.

[0090] For example, this step can be referred to Figure 1 Step 101 in the above is not described in detail.

[0091] S202. Determine a target mode according to a cooling / heating request; wherein the target mode is a cooling mode or a heating mode.

[0092] In one example, step 202 includes the following two implementations:

[0093] A first implementation method of step 202: determining actual parameter values ​​of the electric vehicle according to a cooling / heating request; wherein the actual parameter values ​​include an actual charging current value, an actual battery cell temperature value, and an actual coolant temperature value; determining that the target mode is a cooling mode according to the actual charging current value, the actual battery cell temperature value, and the actual coolant temperature value.

[0094] In one example, "determining the target mode as cooling mode based on the actual charging current value, the actual battery cell temperature value and the actual coolant temperature value" includes: determining the target mode as a single cooling mode, or a combined cooling mode, based on a mapping relationship between a preset actual parameter value and the cooling mode; wherein the single cooling mode is a pile-end liquid cooling unit or a vehicle-end liquid cooling unit to perform cooling operations; and the combined cooling mode is a pile-end liquid cooling unit and a vehicle-end liquid cooling unit to perform cooling operations.

[0095] In one example, "determining the target mode as the combined cooling mode based on the mapping relationship between the preset actual parameter value and the cooling mode" includes: if it is determined that the actual charging current value is greater than or equal to the preset current threshold, and the actual battery cell temperature value is greater than the preset first battery cell temperature threshold, and the actual coolant temperature value is greater than or equal to the preset coolant threshold, then the target mode is determined to be the combined cooling mode; if it is determined that the actual charging current value is greater than or equal to the preset current threshold, and the actual battery cell temperature value is greater than the preset first battery cell temperature threshold, and the actual coolant temperature value is less than the preset coolant threshold, then the target mode is determined to be the combined cooling mode; if it is determined that the actual charging current value is greater than or equal to the current threshold, and the actual battery cell temperature value is between the preset first battery cell temperature threshold and the preset second battery cell temperature threshold, and the actual coolant temperature value is greater than or equal to the preset coolant threshold, then the target mode is determined to be the combined cooling mode.

[0096] A second implementation method of step 202: the charging pile is provided with a pile-end charging connector, and the pile-end liquid cooling unit is provided with a pile-end liquid cooling connector; if it is determined that the connection operation is to connect both the pile-end charging connector and the pile-end liquid cooling connector of the charging device to the electric vehicle, then the target mode is determined to be the combined heating mode.

[0097] For example, in a first implementation, the electric vehicle and the charging device may jointly cool the battery of the electric vehicle. Figure 3 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 3 ,like Figure 3As shown, first determine whether the charging connector is connected, that is, whether the charging connector at the pile end and the charging connector at the vehicle end are connected; if so, further determine whether the liquid-cooled charging connector is connected, that is, whether the liquid-cooled connector at the pile end and the liquid-cooled connector at the vehicle end are connected; if so, the electric vehicle and the charging device can jointly provide cooling until there is no cooling demand, and then end. If the charging connector is not connected, the vehicle thermal management system provides cooling alone. If the charging connector is connected and the liquid-cooled charging connector is not connected, the vehicle thermal management system provides cooling alone.

[0098] Further, Figure 4 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 3 ,like Figure 4 As shown, according to the cooling demand, 5 cooling methods can be realized. First, when only the charging connector is connected and the liquid cooling connector is not connected, and the BMS (battery controller) has a cooling demand, the cooling mode is determined to be a separate cooling mode, and the vehicle-end liquid cooling unit cools the battery alone, that is, the vehicle-mounted thermal management system heats. Second, when the charging connector and the liquid cooling connector are connected, the BMS has a cooling demand, and the actual charging current value, the actual battery cell temperature value Tmax (the maximum battery cell temperature at this time), and the actual coolant temperature value are compared with multiple preset thresholds to determine that the cooling mode is a separate cooling mode, and the pile-end liquid cooling unit is used to cool the battery alone; wherein, the various logic judgments of the comparison are detailed in Table 1 below. Third, when the charging connector and the liquid cooling connector are connected, the BMS has a cooling demand, and the actual charging current value, the actual battery cell temperature value Tmax (the maximum battery cell temperature at this time), and the actual coolant temperature value are compared with multiple preset thresholds, and the cooling mode is determined to be a joint cooling mode, and the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are used to cool the battery at the same time; wherein, the various logic judgments of the comparison are detailed in Table 1 below. Fourth, the charging connector and the liquid cooling connector are connected, and the BMS has a cooling demand. The actual charging current value, the actual battery cell temperature value Tmax (the maximum battery cell temperature at this time), and the actual coolant temperature value are compared with multiple preset thresholds to determine that the cooling mode is a single cooling mode, and the pile-end liquid cooling unit is used to cool the battery; among them, the various logical judgments of the comparison are detailed in Table 1 below. Fifth, the charging connector and the liquid cooling connector are connected, and the BMS has a cooling demand. The actual charging current value, the actual battery cell temperature value Tmax (the maximum battery cell temperature at this time), and the actual coolant temperature value are compared with multiple preset thresholds to determine that the cooling mode is a joint cooling mode, and the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are used to cool the battery at the same time. This method is suitable for rapid cooling in extremely hot environments; among them, the various logical judgments of the comparison are detailed in Table 1 below. Alternatively, when the charging connector is not connected and the liquid cooling connector is connected, and the BMS has a cooling demand, the vehicle thermal management system heats.

[0099] Specifically, the following table 1 shows various logic judgment situations of the combined cooling mode and the separate cooling mode:

[0100] Table 1

[0101]

[0102] like Figure 4 As shown in Table 1 above, T1 is the preset first battery cell temperature threshold, that is, the battery cell temperature threshold for entering combined cooling; T2 is the preset second battery cell temperature threshold, that is, the battery cell temperature threshold for exiting combined cooling; t is the preset coolant threshold; A is the preset current threshold.

[0103] In a second implementation, the electric vehicle and the charging device jointly heat the battery of the electric vehicle. Figure 5 A schematic diagram of a charging method for an electric vehicle based on a charging device provided in an embodiment of the present application Figure 4 ,like Figure 5 As shown, first determine whether the charging connector is connected, that is, whether the charging connector at the pile end and the charging connector at the vehicle end are connected; if so, further determine whether the liquid-cooled charging connector is connected, that is, whether the liquid-cooled connector at the pile end and the liquid-cooled connector at the vehicle end are connected; if so, the electric vehicle and the charging device can jointly provide heating until there is no heating demand, and then the process ends. If the charging connector is not connected and the liquid-cooled charging connector is not connected, the vehicle thermal management system provides heating alone. If the charging connector is connected and the liquid-cooled charging connector is not connected, the vehicle thermal management system provides heating alone.

[0104] Furthermore, according to the heating requirements, two heating methods can be achieved. First, only the charging connector is connected, and the target mode is determined to be the separate heating mode. The vehicle-end heater on the electric vehicle heats the battery alone. Second, the charging connector and the liquid cooling connector are connected, and the target mode is determined to be the combined heating mode. The pile-end liquid cooling unit and the vehicle-end heater heat the battery at the same time. Third, only the liquid cooling connector is connected, and the target mode is determined to be the combined heating mode. The pile-end liquid cooling unit and the vehicle-end heater heat the battery at the same time. Among them, the second and third methods are suitable for rapid heating in extremely cold environments.

[0105] S203. According to the target mode, control the liquid cooling unit at the pile end and / or the liquid cooling unit at the vehicle end to perform the target operation and complete the charging; wherein the target operation is a cooling operation or a heating operation.

[0106] In one example, step 203 includes: if the target mode is a single cooling mode, the pile-end liquid cooling unit is controlled to perform a cooling operation; if the target mode is a combined cooling mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform a cooling operation; if the target mode is a combined heating mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform a heating operation; wherein the single cooling mode and the combined cooling mode are both determined based on the actual charging current value, the actual battery cell temperature value and the actual coolant temperature value of the electric vehicle; the combined heating mode is determined based on the charger connected by the connection operation.

[0107] Exemplarily, if the target mode is a single cooling mode, the charging device can control the pile-end liquid cooling unit to perform cooling operations. Alternatively, if the target mode is a combined cooling mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform cooling operations. Alternatively, if the target mode is a combined heating mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform heating operations. Among them, both the single cooling mode and the combined cooling mode are determined according to the actual charging current value, the actual battery core temperature value and the actual coolant temperature value of the electric vehicle; the combined heating mode is determined according to the charger connected by the connection operation.

[0108] For example, Figure 6 A schematic diagram of the architecture of an electric vehicle charging method based on a charging device provided in an embodiment of the present application, such as Figure 6 As shown, the charging device (i.e., super-fast charging device) includes: a charging pile and a liquid cooling pile. The charging pile includes a pile-end charging connector, and the pile-end charging connector has connection nodes such as a low-voltage line, a CAN signal, a high-voltage line, and a liquid cooling gun liquid cooling pipeline interface. The liquid cooling pile includes a TMS controller, a pile-end liquid cooling unit, a heater, an electronic stop valve 1, an electronic stop valve 2, a pile-end liquid cooling connector, and other connection nodes. The pile-end liquid cooling connector includes a low-voltage line, a liquid cooling pipeline interface, and other connection nodes. The vehicle-end liquid cooling unit includes a vehicle-end TMS controller, an electronic water pump, an electronic fan, a compressor, DCDC, DCAC, a sensor, an electronic stop valve 3, etc.

[0109] Furthermore, the liquid cooling unit at the end of the liquid cooling pile can provide cooling for the liquid-cooled vehicle battery and the liquid cooling gun at the same time. When only the on-board thermal management system provides cooling, the electronic stop valve 1 is closed, the electronic stop valve 2 is closed, and the electronic stop valve 3 is opened. In the single cooling mode, when only the liquid cooling unit at the end of the pile provides cooling, the electronic stop valve 1 is opened, the electronic stop valve 2 is opened, and the electronic stop valve 3 is closed. In the combined cooling mode, when the on-board thermal management system and the liquid cooling unit at the end of the pile provide cooling at the same time, the electronic stop valve 1 is opened, the electronic stop valve 2 is opened, and the electronic stop valve 3 is opened.

[0110] Furthermore, the charging connector includes a charging connector at the pile end and a charging connector at the vehicle end. Low-voltage nodes, CAN signal nodes, high-voltage line nodes, wake-up signal nodes, liquid cooling quick-plug interface nodes, etc. are reserved between the connectors. The charging connector node at the pile end is normally in an open circuit state. After the charging connector is connected, a circuit is formed. The liquid cooling circuit of the charging connector at the vehicle end is internally connected and is turned on after connection. The liquid cooling circuit interface has an automatic cut-off function, that is, it is cut off in the non-connected state and is turned on after connection.

[0111] Furthermore, the liquid cooling connector includes a pile-end liquid cooling connector and a vehicle-end liquid cooling connector, and a liquid cooling node and a low-voltage node are reserved between the connectors. The low-voltage line of the pile-end liquid cooling connector is normally in an open circuit state, and the positive and negative lines of the vehicle-end liquid cooling connector are connected inside the connector. After the liquid cooling connector is connected, a loop is formed and a signal is fed back to the TMS controller. The liquid cooling loop interface has an automatic cut-off function, that is, it is cut-off when not connected and it is conductive after being connected.

[0112] The electric vehicle charging method based on the charging device provided in the embodiment of the present application is characterized in that the charging pile is provided with a pile-end charging connector, and the pile-end liquid cooling unit is provided with a pile-end liquid cooling connector; in response to the connection operation between the pile-end charging connector and the pile-end liquid cooling connector, and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained. According to the cooling / heating request, the target mode is determined; wherein the target mode is a cooling mode, or a heating mode. According to the target mode, the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit are controlled to perform the target operation and complete the charging; wherein the target operation is a cooling operation, or a heating operation. In this scheme, the charging device and the whole vehicle can control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit according to the target mode to perform the target operation, and have the combined cooling and heating functions, support the super-fast charging requirements of heavy-duty truck batteries, and achieve the effect of improving the charging efficiency of electric vehicles.

[0113] Figure 7 A schematic diagram of the structure of an electric vehicle charging device based on a charging device provided in this application, such as Figure 7 As shown, the charging device is provided with a charging pile and a liquid cooling pile, the liquid cooling pile is provided with a pile end liquid cooling unit, the charging pile and the liquid cooling pile are respectively provided with connectors for connecting the electric vehicle; the electric vehicle is provided with a vehicle end liquid cooling unit; the device 40 provided in this embodiment includes:

[0114] The acquisition module 41 is used to obtain a cooling / heating request issued by the battery of the electric vehicle in response to a connection operation of the connector of the charging device and a charging confirmation operation; wherein the connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively;

[0115] A determination module 42 is used to determine a target mode according to a cooling / heating request; wherein the target mode is a cooling mode or a heating mode;

[0116] The control module 43 is used to control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit according to the target mode, execute the target operation, and complete the charging; wherein the target operation is a cooling operation or a heating operation.

[0117] Figure 8 A schematic diagram of the structure of another electric vehicle charging device based on a charging device provided in an embodiment of the present application, Figure 7 Based on the embodiment shown, Figure 8 As shown, the determination module 42 includes:

[0118] The first determining unit 421 is used to determine the actual parameter value of the electric vehicle according to the cooling / heating request; wherein the actual parameter value includes the actual charging current value, the actual battery core temperature value and the actual coolant temperature value;

[0119] The second determining unit 422 is used to determine that the target mode is the cooling mode according to the actual charging current value, the actual battery core temperature value and the actual coolant temperature value.

[0120] In a possible implementation manner, the second determining unit 422 includes:

[0121] The determination subunit 4221 is used to determine whether the target mode is a single cooling mode or a combined cooling mode according to a mapping relationship between a preset actual parameter value and a cooling mode;

[0122] Among them, the single cooling mode is that the pile-end liquid cooling unit or the vehicle-end liquid cooling unit performs cooling operation; the combined cooling mode is that the pile-end liquid cooling unit and the vehicle-end liquid cooling unit perform cooling operation.

[0123] In a possible implementation manner, the determination subunit 4221 is specifically configured to:

[0124] If it is determined that the actual charging current value is greater than or equal to the preset current threshold, and the actual battery core temperature value is greater than the preset first battery core temperature threshold, and the actual coolant temperature value is greater than or equal to the preset coolant threshold, then the target mode is determined to be the combined cooling mode;

[0125] If it is determined that the actual charging current value is greater than or equal to the preset current threshold, and the actual battery core temperature value is greater than the preset first battery core temperature threshold, and the actual coolant temperature value is less than the preset coolant threshold, then determining that the target mode is the combined cooling mode;

[0126] If it is determined that the actual charging current value is greater than or equal to the current threshold, and the actual battery cell temperature value is between the preset first battery cell temperature threshold and the preset second battery cell temperature threshold, and the actual coolant temperature value is greater than or equal to the preset coolant threshold, then the target mode is determined to be the combined cooling mode.

[0127] In a possible implementation, the charging pile is provided with a pile-end charging connector, and the pile-end liquid cooling unit is provided with a pile-end liquid cooling connector; the determination module 42 is specifically used to:

[0128] If it is determined that the connection operation is to connect both the pile-end charging connector and the pile-end liquid cooling connector of the charging device to the electric vehicle, then the target mode is determined to be the combined heating mode.

[0129] In a possible implementation manner, the control module 43 is specifically configured to:

[0130] If the target mode is the single cooling mode, the pile end liquid cooling unit is controlled to perform cooling operation;

[0131] If the target mode is the combined cooling mode, the liquid cooling unit at the pile end and the liquid cooling unit at the vehicle end are controlled to perform cooling operation;

[0132] If the target mode is the combined heating mode, the liquid cooling unit at the pile end and the liquid cooling unit at the vehicle end are controlled to perform the heating operation;

[0133] Among them, the separate cooling mode and the combined cooling mode are both determined according to the actual charging current value, the actual battery cell temperature value and the actual coolant temperature value of the electric vehicle; the combined heating mode is determined according to the charger connected by the connection operation.

[0134] In a possible implementation, the charging pile is provided with a pile-end charging connector, and the pile-end liquid cooling unit is provided with a pile-end liquid cooling connector; the acquisition module 41 is specifically used for:

[0135] In response to the connection operation of the pile-end charging connector and the pile-end liquid cooling connector, and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained.

[0136] The device provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and this embodiment will not be described in detail here.

[0137] Fig. 9 This is a schematic diagram of the structure of the charging device provided in this application. Fig. 9 As shown, the charging device 50 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the device 50 also includes a communication component 503. The processor 501, the memory 502 and the communication component 503 are connected via a bus 504.

[0138] In a specific implementation process, at least one processor 501 executes the computer-executable instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0139] The specific implementation process of the processor 501 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0140] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the invention may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0141] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk memory.

[0142] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0143] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0144] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0145] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0146] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0147] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0148] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0149] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0150] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0151] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0152] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for charging an electric vehicle based on a charging device, characterized in that: The charging device is provided with a charging pile and a liquid cooling pile, the liquid cooling pile is provided with a pile end liquid cooling unit, the charging pile and the liquid cooling pile are respectively provided with connectors for connecting an electric vehicle; the electric vehicle is provided with a vehicle end liquid cooling unit; the method comprises: In response to the connection operation of the connector of the charging device and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained; wherein the connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively; Determine a target mode according to the cooling / heating request; wherein the target mode is a cooling mode or a heating mode; According to the target mode, the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit are controlled to perform a target operation and complete charging; wherein the target operation is a cooling operation or a heating operation.

2. The method according to claim 1, characterized in that The step of determining a target mode according to the cooling / heating request includes: Determine actual parameter values ​​of the electric vehicle according to the cooling / heating request; wherein the actual parameter values ​​include actual charging current value, actual battery core temperature value and actual coolant temperature value; According to the actual charging current value, the actual battery core temperature value and the actual coolant temperature value, it is determined that the target mode is a cooling mode.

3. The method according to claim 2, characterized in that The step of determining the target mode as a cooling mode according to the actual charging current value, the actual battery core temperature value, and the actual coolant temperature value includes: According to a mapping relationship between a preset actual parameter value and a cooling mode, determining that the target mode is a single cooling mode or a combined cooling mode; Among them, the separate cooling mode is that the pile end liquid cooling unit or the vehicle end liquid cooling unit performs cooling operation; the combined cooling mode is that the pile end liquid cooling unit and the vehicle end liquid cooling unit perform cooling operation.

4. The method according to claim 3, characterized in that The step of determining the target mode as the combined cooling mode according to the mapping relationship between the preset actual parameter value and the cooling mode includes: If it is determined that the actual charging current value is greater than or equal to a preset current threshold, and the actual battery core temperature value is greater than a preset first battery core temperature threshold, and the actual coolant temperature value is greater than or equal to a preset coolant threshold, then the target mode is determined to be a combined cooling mode; If it is determined that the actual charging current value is greater than or equal to a preset current threshold, and the actual battery core temperature value is greater than a preset first battery core temperature threshold, and the actual coolant temperature value is less than a preset coolant threshold, then determining that the target mode is a combined cooling mode; If it is determined that the actual charging current value is greater than or equal to the current threshold, and the actual battery cell temperature value is between a preset first battery cell temperature threshold and a preset second battery cell temperature threshold, and the actual coolant temperature value is greater than or equal to the preset coolant threshold, then the target mode is determined to be the combined cooling mode.

5. The method according to claim 1, characterized in that The charging pile is provided with a pile end charging connector, and the pile end liquid cooling unit is provided with a pile end liquid cooling connector; and determining the target mode according to the cooling / heating request includes: If it is determined that the connection operation is to connect both the pile-end charging connector and the pile-end liquid cooling connector of the charging device to the electric vehicle, then the target mode is determined to be the combined heating mode.

6. The method according to claim 1, characterized in that According to the target mode, controlling the pile end liquid cooling unit and / or the vehicle end liquid cooling unit to perform the target operation includes: If the target mode is the single cooling mode, the pile end liquid cooling unit is controlled to perform cooling operation; If the target mode is the combined cooling mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform cooling operation; If the target mode is the combined heating mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform a heating operation; Among them, the separate cooling mode and the combined cooling mode are both determined according to the actual charging current value, the actual battery core temperature value and the actual coolant temperature value of the electric vehicle; the combined heating mode is determined according to the charger connected by the connection operation.

7. The method according to any one of claims 1 to 6, characterized in that: The charging pile is provided with a pile end charging connector, and the pile end liquid cooling unit is provided with a pile end liquid cooling connector; in response to the connection operation of the connector of the charging device and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained, including: In response to the connection operation of the pile-end charging connector and the pile-end liquid cooling connector, and the charging confirmation operation, a cooling / heating request issued by the battery of the electric vehicle is obtained.

8. An electric vehicle charging device based on a charging device, characterized in that: The charging device is provided with a charging pile and a liquid cooling pile, the liquid cooling pile is provided with a pile end liquid cooling unit, the charging pile and the liquid cooling pile are respectively provided with a connector for connecting an electric vehicle; the electric vehicle is provided with a vehicle end liquid cooling unit; the device comprises: An acquisition module, configured to acquire a cooling / heating request issued by a battery of the electric vehicle in response to a connection operation of a connector of the charging device and a charging confirmation operation; wherein the connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively; A determination module, configured to determine a target mode according to the cooling / heating request; wherein the target mode is a cooling mode or a heating mode; The control module is used to control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit according to the target mode, perform the target operation, and complete the charging; wherein the target operation is a cooling operation or a heating operation.

9. A charging device, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 7 when executed by a processor.

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