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

Abstract

The embodiment of the application provides a kind of electric vehicle charging method, device, charging device and storage medium based on charging device. It relates to battery charging technical field.The method comprises: in response to the connection operation and the charging confirmation operation of the connector of charging device, the refrigeration / heat request issued by the battery of electric vehicle is acquired;Wherein, the connector of charging pile and liquid cooling pile is connected to electric vehicle respectively in connection operation.According to the refrigeration / heat request, target mode is determined;Wherein, target mode is refrigeration mode, or, heating mode.According to target mode, control pile end liquid cooling unit and / or vehicle end liquid cooling unit, execute target operation, and complete charging;Wherein, target operation is refrigeration operation, or, heating operation.The method is used to improve the charging efficiency of electric vehicle.

Description

TECHNICAL FIELD

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

[0002] At present, heavy truck is the abbreviation of heavy truck. It is a kind of underground, traditional and informal name for heavy truck and semi-trailer tractor, including various special vehicles (watering truck, fire truck, road cleaning truck, oil tank truck, mixing truck, etc.) that we see on the road, self-unloading truck (soil truck, all with lifting device), truck (for carrying goods, including livestock, etc.) and some rare off-road vehicles (mostly for military use). Heavy truck accounts for a large proportion in life and work.

[0003] In the prior art, electric vehicles such as heavy trucks are usually equipped with vehicle-end refrigeration equipment, which can heat or cool the battery according to the vehicle-end refrigeration equipment when it is too cold or too hot.

[0004] However, in the prior art, the power of the vehicle-end refrigeration equipment is small, while the charging demand and refrigeration and heating demand of the heavy truck and other vehicles are very large, which will result in slow refrigeration and heating speed, and further result in long charging time and low charging efficiency. SUMMARY

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

[0006] In a first aspect, the embodiments of the present application provide an electric vehicle charging method based on a charging device. 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, and 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 and charging confirmation operation of the connector of the charging device, a refrigeration / cooling request issued by the battery of the electric vehicle is obtained. The connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively.

[0008] According to the refrigeration / cooling request, a target mode is determined. The target mode is a refrigeration 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 is controlled to perform a target operation and complete charging. The target operation is a refrigeration operation or a heating operation.

[0010] In a possible implementation, the determining the target mode according to the refrigeration / heat request comprises:

[0011] determining an actual charging current value and an actual battery cell temperature value and an actual cooling liquid temperature value of the electric vehicle according to the refrigeration / heat request;

[0012] determining the target mode as the refrigeration mode according to the actual charging current value and the actual battery cell temperature value.

[0013] In a possible implementation, the determining the target mode according to the refrigeration / heat request comprises:

[0014] determining an actual parameter value of the electric vehicle according to the refrigeration / heat request; wherein the actual parameter value comprises an actual charging current value, an actual battery cell temperature value and an actual cooling liquid temperature value;

[0015] determining the target mode as the refrigeration mode according to the actual charging current value, the actual battery cell temperature value and the actual cooling liquid temperature value.

[0016] In a possible implementation, the determining the target mode as the refrigeration mode according to the actual charging current value, the actual battery cell temperature value and the actual cooling liquid temperature value comprises:

[0017] determining the target mode as a single refrigeration mode or a joint refrigeration mode according to a preset mapping relationship between the actual parameter value and the refrigeration mode;

[0018] wherein the single refrigeration mode is a pile end liquid cooling unit or the vehicle end liquid cooling unit performing the refrigeration operation, and the joint refrigeration mode is the pile end liquid cooling unit and the vehicle end liquid cooling unit performing the refrigeration operation.

[0019] In a possible implementation, the determining the target mode as the joint refrigeration mode according to the preset mapping relationship between the actual parameter value and the refrigeration mode comprises:

[0020] if it is determined that the actual charging current value is greater than or equal to a preset current threshold value, the actual battery cell temperature value is greater than a preset first battery cell temperature threshold value, and the actual cooling liquid temperature value is greater than or equal to a preset cooling liquid threshold value, then determining the target mode as the joint refrigeration mode;

[0021] if it is determined that the actual charging current value is greater than or equal to the preset current threshold value, the actual battery cell temperature value is greater than the preset first battery cell temperature threshold value, and the actual cooling liquid temperature value is less than the preset cooling liquid threshold value, then determining the target mode as the joint refrigeration mode;

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

[0023] 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; and the target mode is determined according to the refrigeration / heat request, including:

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

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

[0026] If the target mode is a separate refrigeration mode, the pile-end liquid cooling unit is controlled to perform a refrigeration operation;

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

[0028] 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;

[0029] The separate refrigeration mode and the combined refrigeration mode are determined according to an actual charging current value, an actual battery temperature value and an actual cooling liquid temperature value of the electric vehicle; and the combined heating mode is determined according to a connected charger of 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; and the refrigeration / heat request issued by the battery of the electric vehicle is obtained in response to a connection operation of a connector of the charging device and a charging confirmation operation, including:

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

[0032] In a second aspect, the embodiments of the present application provide an electric vehicle charging device based on a charging device. 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 device comprises:

[0033] An acquisition module is configured to acquire a refrigeration / heat request sent by a battery of the electric vehicle in response to a connection operation and a charging confirmation operation of the connectors of the charging device. 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 is configured to determine a target mode according to the refrigeration / heat request. The target mode is a refrigeration mode or a heat mode.

[0035] A control module is configured to control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit to perform a target operation and complete charging according to the target mode. The target operation is a refrigeration operation or a heat operation.

[0036] In a possible implementation, the determination module comprises:

[0037] A first determination unit is configured to determine an actual parameter value of the electric vehicle according to the refrigeration / heat request. The actual parameter value comprises an actual charging current value, an actual battery cell temperature value and an actual cooling liquid temperature value.

[0038] A second determination unit is configured to determine the target mode as the refrigeration mode according to the actual charging current value, the actual battery cell temperature value and the actual cooling liquid temperature value.

[0039] In a possible implementation, the second determination unit comprises:

[0040] A determination sub-unit is configured to determine the target mode as a separate refrigeration mode or a joint refrigeration mode according to a mapping relationship between preset actual parameter values and the refrigeration mode.

[0041] The separate refrigeration mode is that the pile-end liquid cooling unit or the vehicle-end liquid cooling unit performs the refrigeration operation. The joint refrigeration mode is that the pile-end liquid cooling unit and the vehicle-end liquid cooling unit perform the refrigeration operation.

[0042] In a possible implementation, the determination sub-unit is specifically configured to:

[0043] determining that the target mode is a joint refrigeration mode if it is determined that the actual charging current value is greater than or equal to the preset current threshold value, the actual battery cell temperature value is greater than the preset first battery cell temperature threshold value, and the actual coolant temperature value is greater than or equal to the preset coolant threshold value;

[0044] determining that the target mode is a joint refrigeration mode if it is determined that the actual charging current value is greater than or equal to the preset current threshold value, the actual battery cell temperature value is greater than the preset first battery cell temperature threshold value, and the actual coolant temperature value is less than the preset coolant threshold value;

[0045] determining that the target mode is a joint refrigeration mode if it is determined that the actual charging current value is greater than or equal to the current threshold value, the actual battery cell temperature value is between the preset first battery cell temperature threshold value and the preset second battery cell temperature threshold value, and the actual coolant temperature value is greater than or equal to the preset coolant threshold value.

[0046] 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 determining module is specifically configured to:

[0047] determining that the target mode is a joint heating mode if it is determined that the connection operation is to connect the pile-end charging connector and the pile-end liquid cooling connector of the charging device to the electric vehicle.

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

[0049] controlling the pile-end liquid cooling unit to perform a refrigeration operation if the target mode is the separate refrigeration mode;

[0050] controlling the pile-end liquid cooling unit and the vehicle-end liquid cooling unit to perform a refrigeration operation if the target mode is the joint refrigeration mode;

[0051] controlling the pile-end liquid cooling unit and the vehicle-end liquid cooling unit to perform a heating operation if the target mode is the joint heating mode;

[0052] The separate refrigeration mode and the joint refrigeration mode are determined according to an actual charging current value, an actual battery cell temperature value and an actual coolant temperature value of the electric vehicle; and the joint heating mode is determined according to a connected charger of 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 determining module is specifically configured 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 refrigeration / heating request issued by a battery of the electric vehicle is acquired.

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

[0056] The memory stores computer execution instructions.

[0057] The processor executes the computer execution instructions stored in the memory, so that the processor executes various possible implementation manners of the first aspect.

[0058] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, the computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by a processor to implement various possible implementation manners of the first aspect.

[0059] In a fifth aspect, an embodiment of the present application provides a computer program product, comprising a computer program, and the computer program is executed by a processor to implement various possible implementation manners of the first aspect.

[0060] The electric vehicle charging method, device, charging device and storage medium provided by the embodiments of the present application are based on the charging device. In response to the connection operation of the connector of the charging device and the charging confirmation operation, the refrigeration / heating request issued by the battery of the electric vehicle is acquired. 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 refrigeration / heating request, the target mode is determined. The target mode is the refrigeration mode or the 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. The target operation is the refrigeration operation or the heating operation. In the present scheme, the charging device and the whole vehicle can control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit to perform the target operation according to the target mode, have the joint refrigeration and heating function, support the super fast charging demand of the heavy truck battery, and achieve the effect of improving the charging efficiency of the electric vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0061] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate an embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0062] Figure 1 A flowchart of an electric vehicle charging method based on a charging device provided by an embodiment of the present application Figure One ;

[0063] Figure 2Another flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the present application Figure Two ;

[0064] Figure 3 Another flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the present application Figure Three ;

[0065] Figure 4 Another flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the present application Figure Three ;

[0066] Figure 5 Another flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the present application Figure Four ;

[0067] Figure 6 Another flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the present application

[0068] Figure 7 Another flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the present application

[0069] Figure 8 Another flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the present application

[0070] Figure 9 Another flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the present application

[0071] The specific embodiments of the present application have been shown through the above-mentioned drawings, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0072] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals represent like elements, unless the context of use indicates otherwise. The following description of exemplary embodiments is not representative of all embodiments consistent with the present application. Rather, they are merely examples of apparatuses 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. It is a kind of thorough, traditional and informal name for heavy truck and semi-trailer tractor, including various special vehicles (watering truck, fire truck, road cleaning truck, oil tank truck, mixing truck, etc.) that we see on the road, self-unloading truck (soil truck, all with lifting device), truck (for carrying goods, including livestock, etc.) and some rare off-road vehicles (mostly for military use). Heavy truck accounts for a large proportion in life and work.

[0074] In one example, heavy trucks and other electric vehicles are usually equipped with vehicle-end refrigeration equipment, which can heat or cool the battery according to the vehicle-end refrigeration equipment when it is too cold or too hot. However, in the prior art, the power of the vehicle-end refrigeration equipment is small, while the charging demand and refrigeration and heating demand of heavy trucks and other vehicles are very large, which will result in slow refrigeration and heating speed, and thus long 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 of low charging efficiency of heavy trucks and other electric vehicles.

[0076] The electric vehicle charging method based on the charging device provided by the present application can control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit according to the target mode, perform target operation, have joint refrigeration and heating function, support super fast charging demand of heavy truck battery, and solve the technical problem of low charging efficiency of heavy trucks and other electric vehicles.

[0077] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail in the following specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes may not be described again in some examples. The embodiments of the present application will be described below with reference to the drawings.

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

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

[0080] Exemplarily, the execution subject of the embodiment can be a charging device, or a terminal device, or a sensitive word data processing device or equipment, or other devices or equipment that can execute the embodiment, which is not limited. In the embodiment, the execution subject is a charging device.

[0081] Firstly, the charging device is provided with a charging pile and a liquid cooling pile. The charging device can realize fast charging, and can also be called a super fast charging device, etc., which is not limited. The charging pile comprises a pile end charging connector, which 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 stop valve. The pile end liquid cooling unit comprises a compressor, a condenser, an expansion valve, a heat exchanger, a PTC, an expansion water tank, an electronic water pump, a temperature sensor, and a pressure temperature sensor. Therefore, the pile end liquid cooling unit can provide cooling and heating for the electric vehicle. The electric vehicle refers to a vehicle that needs to be charged, such as a heavy truck, etc. The electric vehicle comprises a vehicle end thermal management controller (i.e., a vehicle-mounted thermal management system, TMS), a vehicle end liquid cooling unit, an electronic stop valve, a vehicle end liquid cooling connector, and a vehicle end charging connector. Therefore, the charging connector includes the pile end charging connector and the vehicle end charging connector, and the liquid cooling connector includes the pile end liquid cooling connector and the vehicle end liquid cooling connector. The charging connector and the liquid cooling connector are respectively the connectors for connecting the electric vehicle.

[0082] In this step, based on the connection operation of the connector of the charging device performed by the user and the charging confirmation operation, the cooling / heating request of the battery of the electric vehicle is obtained. The connection operation is to connect the pile end charging connector of the charging pile and the end charging connector of the liquid cooling pile to the electric vehicle, respectively. The charging confirmation operation is an operation issued by the user on the user graphical interface of the charging device, or an operation issued on the user graphical interface of the electric vehicle, or an operation issued by the user scanning the two-dimensional code of the charging device and entering the user graphical interface displayed on the terminal device such as a mobile phone, which is not limited.

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

[0084] Exemplarily, the charging device determines the target mode as the cooling mode according to the cooling request. Alternatively, the target mode is determined as the heating mode according to the heating request.

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

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

[0087] The electric vehicle charging method based on the charging device provided by the embodiment of the application responds to the connection operation and the charging confirmation operation of the connector of the charging device to obtain a refrigeration / heating request issued by a battery of an electric vehicle. The connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle, respectively. The target mode is determined according to the refrigeration / heating request. The target mode is a refrigeration mode or a heating mode. The pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit are controlled according to the target mode to perform the target operation and complete the charging. The target operation is a refrigeration 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, have the joint refrigeration and heating function, support the super-fast charging demand of the heavy truck battery, and achieve the effect of improving the charging efficiency of the electric vehicle.

[0088] Figure 2 The flowchart of the electric vehicle charging method based on the charging device provided by the embodiment of the application is shown in Figure Two As shown in Figure 2 , the embodiment is based on the embodiment, and the electric vehicle charging method based on the charging device is described in detail. The method includes the following steps. Figure 1 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. The refrigeration / heating request issued by the battery of the electric vehicle is obtained in response to the connection operation of the pile-end charging connector and the pile-end liquid cooling connector and the charging confirmation operation.

[0089] Exemplarily, this step can refer to step 101 in

[0090] , and will not be described here. Figure 1

[0091] S202, the target mode is determined according to the refrigeration / heating request. The target mode is a refrigeration mode or a heating mode.

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

[0093] ​The first implementation of step 202: determining an actual parameter value of the electric vehicle according to the refrigeration / heat request; wherein the actual parameter value includes an actual charging current value, an actual battery cell temperature value, and an actual cooling liquid temperature value; and determining that the target mode is the refrigeration mode according to the actual charging current value, the actual battery cell temperature value, and the actual cooling liquid temperature value.

[0094] In one example, the determining that the target mode is the refrigeration mode according to the actual charging current value, the actual battery cell temperature value, and the actual cooling liquid temperature value includes: determining that the target mode is a single refrigeration mode or a joint refrigeration mode according to a preset mapping relationship between the actual parameter value and the refrigeration mode; wherein the single refrigeration mode is the pile-end liquid cooling unit or the vehicle-end liquid cooling unit performing the refrigeration operation; and the joint refrigeration mode is the pile-end liquid cooling unit and the vehicle-end liquid cooling unit performing the refrigeration operation.

[0095] In one example, the determining that the target mode is the joint refrigeration mode according to the preset mapping relationship between the actual parameter value and the refrigeration mode includes: determining that the target mode is the joint refrigeration mode if it is determined that the actual charging current value is greater than or equal to a preset current threshold value, the actual battery cell temperature value is greater than a preset first battery cell temperature threshold value, and the actual cooling liquid temperature value is greater than or equal to a preset cooling liquid threshold value; determining that the target mode is the joint refrigeration mode if it is determined that the actual charging current value is greater than or equal to the preset current threshold value, the actual battery cell temperature value is greater than the preset first battery cell temperature threshold value, and the actual cooling liquid temperature value is less than the preset cooling liquid threshold value; and determining that the target mode is the joint refrigeration mode if it is determined that the actual charging current value is greater than or equal to the current threshold value, the actual battery cell temperature value is between the preset first battery cell temperature threshold value and a preset second battery cell temperature threshold value, and the actual cooling liquid temperature value is greater than or equal to the preset cooling liquid threshold value.

[0096] The second implementation 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; and if it is determined that the connection operation is to connect the pile-end charging connector and the pile-end liquid cooling connector of the charging device to the electric vehicle, it is determined that the target mode is the joint heating mode.

[0097] Exemplarily, in the first implementation, the electric vehicle and the charging device can jointly refrigerate the battery of the electric vehicle. Figure 3 A flowchart of an electric vehicle charging method based on a charging device provided by an embodiment of the present application Figure Three As Figure 3As shown, the system first checks if the charging connectors are connected, specifically whether the charging connector at the charging station and the charging connector at the vehicle are connected. If so, it further checks if the liquid-cooled charging connector is connected, again checking if the liquid-cooled connector at the charging station and the liquid-cooled connector at the vehicle are connected. If so, the electric vehicle and the charging device can jointly provide cooling until no cooling is needed, at which point the process ends. If the charging connector is not connected, the on-board thermal management system provides cooling independently. If the charging connector is connected but the liquid-cooled charging connector is not connected, the on-board thermal management system provides cooling independently.

[0098] Furthermore, Figure 4 A flowchart illustrating an electric vehicle charging method based on a charging device provided in this application embodiment. Figure Three ,like Figure 4 As shown, five cooling methods can be implemented based on cooling requirements. First, when only the charging connector is connected, and the liquid cooling connector is not connected, but the BMS (Battery Management System) requires cooling, the cooling mode is determined to be a standalone cooling mode, where the vehicle-side liquid cooling unit cools the battery independently, i.e., the onboard thermal management system provides heating. Second, when both the charging connector and the liquid cooling connector are connected, and the BMS requires cooling, the actual charging current value, the actual cell temperature value Tmax (at this time, the maximum cell temperature), and the actual coolant temperature value are compared with multiple preset thresholds to determine the cooling mode as a standalone cooling mode, where the pile-side liquid cooling unit cools the battery independently; details of the various comparison logic judgments are shown in Table 1 below. Third, when both the charging connector and the liquid cooling connector are connected, and the BMS requires cooling, the actual charging current value, the actual cell temperature value Tmax (at this time, the maximum cell temperature), and the actual coolant temperature value are compared with multiple preset thresholds to determine the cooling mode as a combined cooling mode, where both the pile-side liquid cooling unit and the vehicle-side liquid cooling unit cool the battery simultaneously; details of the various comparison logic judgments are shown in Table 1 below. Fourth, when the charging connector and liquid cooling connector are connected, and the BMS requires cooling, the actual charging current value, the actual cell temperature value Tmax (at this time, the maximum cell temperature), and the actual coolant temperature value are compared with multiple preset thresholds to determine the cooling mode as a separate cooling mode, using the terminal liquid cooling unit to cool the battery; the various logical judgment cases for comparison are detailed in Table 1 below. Fifth, when the charging connector and liquid cooling connector are connected, and the BMS requires cooling, the actual charging current value, the actual cell temperature value Tmax (at this time, the maximum cell temperature), and the actual coolant temperature value are compared with multiple preset thresholds to determine the cooling mode as a combined cooling mode, using both the terminal liquid cooling unit and the vehicle-side liquid cooling unit to cool the battery simultaneously. This method is suitable for rapid cooling in extremely hot environments; the various logical judgment cases for comparison are detailed in Table 1 below. Alternatively, when the charging connector is not connected but the liquid cooling connector is connected, and the BMS requires cooling, the on-board thermal management system will generate heat.

[0099] Specifically, Table 1 below is a variety of logical judgment cases in the combined refrigeration mode and the single refrigeration mode:

[0100] Table 1

[0101]

[0102] As Figure 4 shown in Table 1 above, T1 is a preset first battery temperature threshold, i.e., a battery temperature threshold for entering combined refrigeration; T2 is a preset second battery temperature threshold, i.e., a battery temperature threshold for exiting combined refrigeration; t is a preset coolant threshold; and A is a preset current threshold.

[0103] In the second implementation manner, the electric vehicle and the charging device jointly heat the battery of the electric vehicle. Figure 5 A flowchart of an electric vehicle charging method based on a charging device provided by an embodiment of the present application is shown in Figure Four As Figure 5 shown, first, it is determined whether the charging connector is connected, i.e., whether the pile-end charging connector and the vehicle-end charging connector are connected; if yes, it is further determined whether the liquid-cooled charging connector is connected, i.e., whether the pile-end liquid-cooled connector and the vehicle-end liquid-cooled connector are connected; if yes, the electric vehicle and the charging device can jointly provide heating until there is no heating demand, and the process ends. If the charging connector is not connected and the liquid-cooled charging connector is not connected, the vehicle-mounted thermal management system provides heating alone. If the charging connector is connected and the liquid-cooled charging connector is not connected, the vehicle-mounted thermal management system provides heating alone.

[0104] Further, according to the heating demand, two heating modes can be implemented. First, only the charging connector is connected, it is determined that the target mode is the single heating mode, and the vehicle-end heater on the electric vehicle heats the battery alone. Second, the charging connector and the liquid-cooled connector are connected, it is determined that the target mode is the combined heating mode, and the pile-end liquid-cooled unit and the vehicle-end heater simultaneously heat the battery. Third, only the liquid-cooled connector is connected, it is determined that the target mode is the combined heating mode, and the pile-end liquid-cooled unit and the vehicle-end heater simultaneously heat the battery. Among them, the second and third modes are suitable for fast heating in extremely cold environments.

[0105] S203, according to the target mode, controlling the pile-end liquid-cooled unit and / or the vehicle-end liquid-cooled unit, performing the target operation, and completing the charging; wherein the target operation is a refrigeration operation or a heating operation.

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

[0107] For example, if the target mode is a standalone cooling mode, the charging device can control the pile-end liquid cooling unit to perform a cooling operation. Alternatively, if the target mode is a combined cooling mode, it controls both the pile-end liquid cooling unit and the vehicle-end liquid cooling unit to perform a cooling operation. Alternatively, if the target mode is a combined heating mode, it controls both the pile-end liquid cooling unit and the vehicle-end liquid cooling unit to perform a heating operation. The standalone cooling mode and the combined cooling mode are determined based on the actual charging current, actual cell temperature, and actual coolant temperature of the electric vehicle; the combined heating mode is determined based on the charger connected during the connection operation.

[0108] For example, Figure 6 This application provides an embodiment of an electric vehicle charging method based on a charging device, as shown in the following schematic diagram. Figure 6 As shown, the charging device (i.e., the super-fast charging device) includes: a charging pile and a liquid-cooled charging pile. The charging pile includes a charging connector at the pile end, which has connection nodes such as a low-voltage line, CAN signal, high-voltage line, and liquid-cooled pipe interface for the liquid-cooled gun. The liquid-cooled charging pile includes a TMS controller, a liquid-cooled unit at the pile end, a heater, electronic shut-off valve 1, electronic shut-off valve 2, and a liquid-cooled connector at the pile end, which includes connection nodes such as a low-voltage line and a liquid-cooled pipe interface. The vehicle-side liquid-cooled unit includes a vehicle-side TMS controller, an electronic water pump, an electronic fan, a compressor, a DC-DC converter, a DC-AC converter, sensors, and an electronic shut-off valve 3.

[0109] Furthermore, the liquid-cooled pile terminal liquid cooling unit can simultaneously provide cooling for both the liquid-cooled vehicle battery and the liquid cooling gun. When only the on-board thermal management system provides cooling, electronic shut-off valve 1 is closed, electronic shut-off valve 2 is closed, and electronic shut-off valve 3 is open. In standalone cooling mode, when only the pile terminal liquid cooling unit provides cooling, electronic shut-off valve 1 is open, electronic shut-off valve 2 is open, and electronic shut-off valve 3 is closed. In combined cooling mode, when both the on-board thermal management system and the pile terminal liquid cooling unit provide cooling simultaneously, electronic shut-off valve 1 is open, electronic shut-off valve 2 is open, and electronic shut-off valve 3 is open.

[0110] Further, the charging connector includes a pile end charging connector and a vehicle end charging connector, and the connectors reserve low-voltage nodes, CAN signal nodes, high-voltage line nodes, wake-up signal nodes, liquid cooling quick plug interface nodes, etc. between them. The nodes of the pile end charging connector are normally in an open circuit state, and a loop is formed after the charging connector is connected. The liquid cooling circuits of the vehicle end charging connector are connected internally, and are conducted after being connected. The liquid cooling circuit interface has an automatic cutoff function, that is, it is cut off in a non-connected state and is conducted after being connected.

[0111] Further, the liquid cooling connector includes a pile end liquid cooling connector and a vehicle end liquid cooling connector, and the connectors reserve liquid cooling nodes and low-voltage nodes between them. The low-voltage line of the pile end liquid cooling connector is normally in an open circuit state, and the vehicle end liquid cooling connector is connected internally. After the liquid cooling connector is connected, a loop is formed and a signal is fed back to the TMS controller. The liquid cooling circuit interface has an automatic cutoff function, that is, it is cut off in a non-connected state and is conducted after being connected.

[0112] The electric vehicle charging method based on the charging device provided by the embodiment of the application, 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 pile end charging connector and the pile end liquid cooling connector and the charging confirmation operation, a refrigeration / heat request issued by the battery of the electric vehicle is acquired. According to the refrigeration / heat request, a target mode is determined. The target mode is a refrigeration mode or a heat 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. The target operation is a refrigeration operation or a heat operation. In the scheme, the charging device and the whole vehicle can control the pile end liquid cooling unit and / or the vehicle end liquid cooling unit to perform the target operation according to the target mode, have the joint refrigeration and heat function, support the super-fast charging demand of the heavy truck battery, and achieve the effect of improving the charging efficiency of the electric vehicle.

[0113] Figure 7 A structural schematic diagram of an electric vehicle charging device based on a charging device provided by the application is shown in Figure 7 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, and 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 by the embodiment includes:

[0114] The acquisition module 41 is used for acquiring a refrigeration / heat 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. The connection operation is to connect the connectors of the charging pile and the liquid cooling pile to the electric vehicle respectively.

[0115] The determination module 42 is used for determining a target mode according to the refrigeration / heat request. The target mode is a refrigeration mode or a heat mode.

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

[0117] Figure 8 This is a schematic diagram of another electric vehicle charging device based on a charging device provided in an embodiment of this application. Figure 7 Based on the illustrated embodiments, as Figure 8 As shown, module 42 includes:

[0118] The first determining unit 421 is used to determine the actual parameter values ​​of the electric vehicle based on the cooling / heating request; wherein the actual parameter values ​​include the actual charging current value, the actual cell temperature value, and the actual coolant temperature value.

[0119] The second determining unit 422 is used to determine the target mode as cooling mode based on the actual charging current value, the actual cell temperature value and the actual coolant temperature value.

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

[0121] The subunit 4221 is used to determine the target mode as either a standalone cooling mode or a combined cooling mode based on the preset mapping relationship between actual parameter values ​​and cooling modes.

[0122] The standalone cooling mode uses either a pile-end liquid cooling unit or a vehicle-end liquid cooling unit to perform cooling operations; the combined cooling mode uses both a pile-end liquid cooling unit and a vehicle-end liquid cooling unit to perform cooling operations.

[0123] In one possible implementation, subunit 4221 is specifically used for:

[0124] If the actual charging current value is greater than or equal to the preset current threshold, the actual cell temperature value is greater than the preset first 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.

[0125] If the actual charging current value is greater than or equal to the preset current threshold, the actual cell temperature value is greater than the preset first 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.

[0126] If the actual charging current value is greater than or equal to the current threshold, the actual cell temperature value is between the preset first cell temperature threshold and the preset second 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 determining module 42 is specifically configured 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, it is determined that the target mode is a combined heating mode.

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

[0130] If the target mode is a separate refrigeration mode, the pile-end liquid cooling unit is controlled to perform a refrigeration operation.

[0131] If the target mode is a combined refrigeration mode, the pile-end liquid cooling unit and the vehicle-end liquid cooling unit are controlled to perform a refrigeration operation.

[0132] 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.

[0133] The separate refrigeration mode and the combined refrigeration mode are both determined according to an actual charging current value, an actual battery cell temperature value and an actual cooling liquid temperature value of the electric vehicle; and the combined heating mode is determined according to the connected charger of 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 obtaining module 41 is specifically configured to:

[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, the obtaining module 41 is specifically configured to obtain a refrigeration / heating request issued by the battery of the electric vehicle.

[0136] The device provided in this embodiment can execute the method provided in the method embodiment, and has similar implementation principles and technical effects, which will not be described here in detail.

[0137] Figure 9 The charging device provided in this embodiment is shown in a structural schematic diagram. As shown in Figure 9 The charging device 50 provided in this embodiment includes at least one processor 501 and a memory 502. Optionally, the device 50 further includes a communication component 503. The processor 501, the memory 502 and the communication component 503 are connected through a bus 504.

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

[0139] The specific implementation process of the processor 501 can refer to the method embodiments described above, which have similar implementation principles and technical effects, and thus will not be described here.

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

[0141] The memory can include a random access memory (RAM), and can also include a non-volatile memory (NVM), such as at least one disk memory.

[0142] The bus can be an industry standard architecture (ISA) bus, a peripheral component (PCI) bus, an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, the bus in the drawings of the present application does not limit to only one bus or one type of bus.

[0143] The present application also provides a computer program product, comprising a computer program, which is executed by the processor to realize the above method.

[0144] The present application also provides a computer readable storage medium, which stores computer execution instructions, and when the processor executes the computer execution instructions, the above method is realized.

[0145] The above-mentioned readable storage medium can be realized by any type of volatile or nonvolatile storage devices 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 storage, 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 the 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 an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in the device.

[0147] The division of units is only a logical functional division, and in actual implementation, there can be another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

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

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

[0150] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the technical solutions that essentially contribute to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the embodiments of the method of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0151] It can be understood by those skilled in the art that all or part of the steps of the above-mentioned method embodiments can be completed by program instruction related hardware. 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, magnetic disk or optical disk, and various media that can store program codes.

[0152] Finally, it should be noted that: those skilled in the art will easily think of other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application that follow the general principles of the present application and include common knowledge or conventional technical means in the art that are not disclosed in the present application, and is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is only limited by the appended claims.

Claims

1. A method of charging an electric vehicle based on a charging device, characterized by, 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, and 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 a connection operation and a charging confirmation operation of the connectors of the charging device, a refrigeration / heat request issued by a battery of the electric vehicle is acquired; 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 refrigeration / heat request, a target mode is determined; actual parameter values of the electric vehicle are determined; wherein the actual parameter values include an actual charging current value, an actual battery cell temperature value and an actual cooling liquid temperature value; the target mode is a separate refrigeration mode, a joint refrigeration mode or a joint heating mode; the separate refrigeration mode and the joint refrigeration mode are determined according to the actual charging current value, the actual battery cell temperature value and the actual cooling liquid temperature value of the electric vehicle; the joint heating mode is determined according to the connected charger; the separate refrigeration mode is to perform a refrigeration operation by the pile end liquid cooling unit or the vehicle end liquid cooling unit, the joint refrigeration mode is to perform a refrigeration operation by the pile end liquid cooling unit and the vehicle end liquid cooling unit, and the joint heating mode is to perform a heating operation by the pile end liquid cooling unit and the vehicle end liquid cooling unit; 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 refrigeration operation or a heating operation.

2. The method of claim 1, wherein, The separate refrigeration mode and the joint refrigeration mode are determined according to the actual charging current value, the actual battery cell temperature value and the actual cooling liquid temperature value of the electric vehicle, comprising: According to a preset mapping relationship between actual parameter values and refrigeration modes, the target mode is determined to be a separate refrigeration mode or a joint refrigeration mode; Wherein the separate refrigeration mode is to perform a refrigeration operation by the pile end liquid cooling unit or the vehicle end liquid cooling unit, and the joint refrigeration mode is to perform a refrigeration operation by the pile end liquid cooling unit and the vehicle end liquid cooling unit.

3. The method of claim 2, wherein, According to a preset mapping relationship between actual parameter values and refrigeration modes, the target mode is determined to be a joint refrigeration mode, comprising: If it is determined that the actual charging current value is greater than or equal to a preset current threshold value, and the actual battery cell temperature value is greater than a preset first battery cell temperature threshold value, and the actual cooling liquid temperature value is greater than or equal to a preset cooling liquid threshold value, the target mode is determined to be a joint refrigeration mode; If it is determined that the actual charging current value is greater than or equal to a preset current threshold value, and the actual battery cell temperature value is greater than a preset first battery cell temperature threshold value, and the actual cooling liquid temperature value is less than a preset cooling liquid threshold value, the target mode is determined to be a joint refrigeration mode; ​ If it is determined that the actual charging current value is greater than or equal to the current threshold value, and the actual battery temperature value is between the preset first battery temperature threshold value and the preset second battery temperature threshold value, and the actual coolant temperature value is greater than or equal to the preset coolant threshold value, it is determined that the target mode is a combined refrigeration mode.

4. The method of claim 1, wherein, 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 target mode is determined according to the refrigeration / heat request, including: If it is determined that the connection operation is to connect the pile-end charging connector and the pile-end liquid cooling connector of the charging device to the electric vehicle, it is determined that the target mode is a combined heating mode.

5. An electric vehicle charging device based on a charging device, characterized by, 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, and 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 device includes: An acquisition module is configured to acquire a refrigeration / heat 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 is configured to determine a target mode according to the refrigeration / heat request, and to determine actual parameter values of the electric vehicle; wherein the actual parameter values include an actual charging current value, an actual battery temperature value, and an actual coolant temperature value; the target mode is a separate refrigeration mode, a combined refrigeration mode, or a combined heating mode; the separate refrigeration mode and the combined refrigeration mode are determined according to the actual charging current value, the actual battery temperature value, and the actual coolant temperature value of the electric vehicle; the combined heating mode is determined according to the connected charger of the connection operation; the separate refrigeration mode is a pile-end liquid cooling unit or a vehicle-end liquid cooling unit performing a refrigeration operation, the combined refrigeration mode is a pile-end liquid cooling unit and a vehicle-end liquid cooling unit performing a refrigeration operation, and the combined heating mode is a pile-end liquid cooling unit and a vehicle-end liquid cooling unit performing a heating operation; A control module is configured to control the pile-end liquid cooling unit and / or the vehicle-end liquid cooling unit to perform a target operation and complete charging according to the target mode; wherein the target operation is a refrigeration operation or a heating operation.

6. A charging device, characterized by including: a memory and a processor; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, so that the processor executes the method of any one of claims 1-4.

7. A computer readable storage medium characterized in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by the processor to implement the method of any one of claims 1-4.

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