Battery pack heating architecture, battery pack heating method, controller, and vehicle

Abstract

The application relates to a battery pack heating architecture, a battery pack heating method, a controller and a vehicle. The architecture comprises: a battery circuit, the battery circuit comprising: a battery pack; a battery water pump connected with a water inlet of the battery pack; an integrated circuit, the integrated circuit comprising: an integrated module integrating an on-board charger and a DC-DC converter; a first communication module arranged between the battery circuit and the integrated circuit, the first communication module being used for connecting or disconnecting the battery circuit and the integrated circuit; and a controller, which is used for, when the battery pack is in a slow charging working condition, in response to a working state of the battery pack being in a non-heating state and a working temperature of the integrated module being not less than a first preset temperature, controlling the first communication module to connect the battery circuit and the integrated circuit, and controlling the battery water pump to work, so as to heat the battery pack. The above scheme can reduce the consumption of electric quantity in the battery pack heating process.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery pack heating architecture, a battery pack heating method, a controller, and a vehicle. Background Technology

[0002] Currently, the integration level of new energy vehicle components is getting higher and higher. The battery CTC (Cell to Chassis) structure, which integrates the whole vehicle's OBC (On board charger) & DC-DC converter with the battery pack, has been applied by many vehicle manufacturers.

[0003] When the vehicle is in a low-temperature slow charging condition, the heat generated by the battery cells will be less than the heat dissipated by the environment due to the lower charging rate. During this process, when the battery pack temperature drops to the heating activation threshold, the vehicle needs to repeatedly activate the heating system to increase power consumption and extend the charging time. Summary of the Invention

[0004] Therefore, it is necessary to provide a battery pack heating architecture, battery pack heating method, controller, and vehicle that can reduce power consumption during the battery pack heating process, in order to address the above-mentioned technical problems.

[0005] On the one hand, a battery pack heating architecture is provided, which includes:

[0006] Battery circuit, the battery circuit comprising:

[0007] Battery pack;

[0008] A battery-powered water pump, which is connected to the water inlet of the battery pack;

[0009] An integrated circuit, the integrated circuit comprising:

[0010] An integrated module that combines an on-board charger and a DC-DC converter;

[0011] A first connecting module is disposed between the battery circuit and the integrated circuit. The first connecting module is used to connect or disconnect the battery circuit and the integrated circuit.

[0012] The controller is configured to, when the battery pack is in a slow charging state, and in response to the battery pack being in a non-heating state and the operating temperature of the integrated module being not less than a first preset temperature, control the first communication module to connect the battery circuit and the integrated circuit, and control the battery water pump to operate in order to heat the battery pack.

[0013] In one embodiment, the architecture further includes:

[0014] An external cooling circuit for the battery pack is used to cool the battery pack when it is connected to the battery circuit;

[0015] A second communication module is disposed between the battery circuit and the external cooling circuit of the battery pack. The second communication module is used to connect or disconnect the battery circuit and the external cooling circuit of the battery pack.

[0016] An external cooling circuit for the integrated module is used to cool the integrated module when it is connected to the integrated circuit;

[0017] A third connecting module is disposed between the integrated circuit and the external cooling circuit of the integrated module. The third connecting module is used to connect or disconnect the integrated circuit and the external cooling circuit of the integrated module.

[0018] The controller is further configured to, when the battery pack is in a slow charging state, and in response to the battery pack being in a non-heated state and the integrated module's operating temperature not being lower than a first preset temperature, control the second communication module to disconnect the battery circuit from the external cooling circuit of the battery pack, and control the third communication module to disconnect the integrated circuit from the external cooling circuit of the integrated module.

[0019] In one embodiment, the controller is further configured to: when the battery pack is in the slow charging condition, in response to the battery pack being in a heating state, or in response to the battery pack being in a non-heating state and the operating temperature of the integrated module being lower than a first preset temperature, control the first communication module to disconnect the battery circuit and the integrated circuit, control the second communication module to connect the battery circuit and the external cooling circuit of the battery pack, and control the third communication module to connect the integrated circuit and the external cooling circuit of the integrated module.

[0020] In one embodiment, the battery pack heating architecture further includes:

[0021] A temperature sensor is installed at the water inlet end of the battery pack. The temperature sensor is used to detect the temperature at the water inlet end to obtain the target temperature after the step of controlling the first communication module to connect the battery circuit and the integrated circuit and controlling the battery water pump to work to heat the battery pack.

[0022] The controller is also used for:

[0023] In response to the target temperature being greater than the second preset temperature, the first communication module is controlled to disconnect the battery circuit and the integrated circuit, the second communication module is controlled to connect the battery circuit and the external cooling circuit of the battery pack, and the third communication module is controlled to connect the integrated circuit and the external cooling circuit of the integrated module.

[0024] In one embodiment, the first connecting module, the second connecting module, and the third connecting module are four-way valves.

[0025] In one embodiment, the controller is a vehicle controller or a combination instrument.

[0026] On the other hand, a battery pack heating method is also provided, which heats the battery pack through a battery pack heating architecture. The battery pack heating architecture includes an integrated circuit and a battery circuit. The integrated circuit includes an integrated module that integrates an on-board charger and a DC-DC converter. The battery circuit includes a battery pack and a battery water pump. The battery pack heating method includes:

[0027] When the battery pack is in slow charging mode, obtain the working status of the battery pack;

[0028] Determine whether the operating state of the battery pack is a heating state;

[0029] In response to the fact that the operating state of the battery pack is not the heating state, it is determined whether the operating temperature of the integrated module is not lower than a first preset temperature;

[0030] In response to the operating temperature being not less than the first preset temperature, the battery circuit and the integrated circuit are connected, and the battery pack is heated by the operation of the battery water pump.

[0031] In one embodiment, the battery pack heating architecture further includes an external cooling circuit for the battery pack, a second connecting module, an external cooling circuit for the integrated module, and a third connecting module. The second connecting module is disposed between the battery circuit and the external cooling circuit for the battery pack, and the third connecting module is disposed between the integrated circuit and the external cooling circuit for the integrated module.

[0032] After determining whether the operating temperature of the integrated module is not lower than a first preset temperature in response to the battery pack's operating state not being the heating state, the method further includes:

[0033] In response to the operating temperature of the integrated module being not lower than the first preset temperature, the battery circuit and the external cooling circuit of the battery pack are disconnected through the second connection module, and the integrated circuit and the external cooling circuit of the integrated module are disconnected through the third connection module.

[0034] In one embodiment, after the step of determining whether the operating state of the battery pack is a heating state, the method further includes:

[0035] In response to the battery pack's operating state being the heating state, the battery circuit and the integrated circuit are disconnected via the first communication module, the battery circuit and the external cooling circuit of the battery pack are connected via the second communication module, and the integrated circuit and the external cooling circuit of the integrated module are connected via the third communication module.

[0036] In one embodiment, after the step of determining whether the operating temperature of the integrated module is not lower than a first preset temperature in response to the battery pack's operating state not being the heating state, the method further includes:

[0037] In response to the operating temperature of the integrated module being lower than the first preset temperature, the battery circuit and the integrated circuit are disconnected through the first communication module, the battery circuit and the external cooling circuit of the battery pack are connected through the second communication module, and the integrated circuit and the external cooling circuit of the integrated module are connected through the third communication module.

[0038] In one embodiment, after the step of connecting the battery circuit and the integrated circuit and heating the battery pack in response to the operating temperature being not less than the first preset temperature, the method further includes:

[0039] The target temperature is obtained by detecting the temperature of the water inlet of the battery pack;

[0040] Determine whether the target temperature is not greater than the second preset temperature;

[0041] In response to a temperature exceeding the second preset temperature, the connection between the battery circuit and the integrated circuit is disconnected, the connection between the battery circuit and the external cooling circuit of the battery pack is established, and the connection between the integrated circuit and the external cooling circuit of the integrated module is established.

[0042] Furthermore, a controller is also provided for performing the battery pack heating method described above.

[0043] On another front, a vehicle is also provided, which includes the controller described above and / or the battery pack heating architecture described above.

[0044] The aforementioned battery pack heating architecture, battery pack heating method, controller, and vehicle, when the battery pack is in slow charging mode, the controller responds to the battery pack's working state being in a non-heating state and the integrated module's working temperature not being lower than a first preset temperature, controls the first connecting module to connect the battery circuit and the integrated circuit, and controls the battery water pump to work to heat the battery pack, thereby reducing the power consumption during the battery pack heating process. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the battery pack heating architecture provided in an embodiment of this application;

[0046] Figure 2 A schematic flowchart illustrating the battery pack heating method provided in an embodiment of this application;

[0047] Figure 3 This is another schematic diagram of the battery pack heating method provided in the embodiments of this application. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0049] This application provides a vehicle that includes a battery pack heating architecture. Please refer to... Figure 1 , Figure 1 This is a schematic diagram of the battery pack heating architecture provided in an embodiment of this application. Figure 1 As shown, the battery pack heating architecture 1 includes a battery circuit 11, an integrated circuit 12, a first communication module 13, and a controller 14.

[0050] The battery circuit 11 includes a battery pack 111 and a battery water pump 112. The battery pack 111 includes an inlet 1111 and an outlet 1112. The end of the battery pack 111 closest to the battery water pump 112 is the inlet, and the end furthest from the battery water pump 112 is the outlet. The inlet of the battery pack 111 is connected to the battery water pump 112. In one embodiment, the battery circuit 11 further includes a first pipe 113 and a second pipe 114. One end of the battery pack 111 is connected to the battery water pump 112 via the first pipe 113, and the other end is connected to the first communication module 13 via the second pipe 114.

[0051] The integrated circuit 12 includes an integrated module 121 that integrates an on-board charger (OBC) and a DC-DC converter.

[0052] The first connecting module 13 is disposed between the battery circuit 11 and the integrated circuit 12. The first connecting module 13 is used to connect or disconnect the battery circuit 11 and the integrated circuit 12. In one embodiment, the first connecting module 13 can be a four-way valve, including a first connecting end 131, a second connecting end 132, a third connecting end 133, and a fourth connecting end 134. The first connecting end 131 and the fourth connecting end 134 are connected to the integrated circuit 12. The second connecting end 132 and the third connecting end 133 are connected to the battery circuit 11. When it is necessary to connect the battery circuit 11 and the integrated circuit 12, the first connecting end 131 and the second connecting end 132 are connected, and the third connecting end 133 and the fourth connecting end 134 are connected. When it is necessary to disconnect the battery circuit 11 and the integrated circuit 12, the first connecting end 131 and the fourth connecting end 134 are connected, and the third connecting end 133 and the second connecting end 132 are connected.

[0053] The controller 14 can be a vehicle control unit (VCU) or an instrument cluster module (ICM). The controller 14 can monitor vehicle status information, such as the operating temperature of the integrated module 121 and the water temperature at the inlet 1111 of the battery pack 111. After processing the vehicle status information, the controller 14 can send vehicle operation status control commands to the power battery system to control the operating mode of the power battery system.

[0054] In one embodiment, when the battery pack 111 is in slow charging mode, the controller 14 can monitor the operating status of the battery pack 111 and the operating temperature of the integrated module 121. In response to the battery pack 111 being in a non-heating state and the operating temperature of the integrated module 121 not being lower than a first preset temperature, the controller 14 controls the first communication module 13 to connect the battery circuit 11 and the integrated circuit 12, and controls the battery water pump 112 to operate to heat the battery pack 111. Thus, when the vehicle is in slow charging mode, a portion of the energy obtained by the integrated module 121 from the charging pile can be used to heat the battery pack 111.

[0055] In some embodiments, such as Figure 1 As shown, architecture 1 also includes an external cooling circuit 15 for the battery pack, a second connecting module 16, an external cooling circuit 17 for the integrated module, and a third connecting module 18.

[0056] The external cooling circuit 15 of the battery pack is used to cool the battery pack 111 when it is connected to the battery circuit 11.

[0057] The second connecting module 16 is disposed between the battery circuit 11 and the external cooling circuit 15 of the battery pack. The second connecting module 16 is used to connect or disconnect the battery circuit 11 and the external cooling circuit 15. In one embodiment, the second connecting module 16 is a four-way valve, including a first conducting end 161, a second conducting end 162, a third conducting end 163, and a fourth conducting end 164. The first conducting end 161 and the second conducting end 162 are connected to the external cooling circuit 15 of the battery pack, and the fourth conducting end 164 and the third conducting end 163 are connected to the battery circuit 11. When it is necessary to connect the battery circuit 11 and the external cooling circuit 15 of the battery pack, the second conducting end 162 and the third conducting end 163 are connected, and the first conducting end 161 and the fourth conducting end 164 are connected. When it is necessary to disconnect the battery circuit 11 and the external cooling circuit 15 of the battery pack, the first conducting end 161 and the second conducting end 162 are connected, and the fourth conducting end 164 and the third conducting end 163 are connected.

[0058] The external cooling circuit 17 of the integrated module is used to cool the integrated module 12 when it is connected to the integrated circuit 12.

[0059] The third connection module 18 is disposed between the integrated circuit 12 and the external cooling circuit 17 of the integrated module. The third connection module 18 is used to connect or disconnect the integrated circuit 12 and the external cooling circuit 17. In one embodiment, the third connection module 18 is a four-way valve, including a first terminal 181, a second terminal 182, a third terminal 183, and a fourth terminal 184. The first terminal 181 and the fourth terminal 184 are connected to the external cooling circuit 17 of the integrated module, and the third terminal 183 and the second terminal 182 are connected to the integrated circuit 12. When it is necessary to connect the integrated circuit 12 and the external cooling circuit 17, the first terminal 181 and the second terminal 182 are connected, and the third terminal 183 and the fourth terminal 184 are connected. When it is necessary to disconnect the integrated circuit 12 and the external cooling circuit 17, the first terminal 181 and the fourth terminal 184 are connected, and the third terminal 183 and the second terminal 182 are connected.

[0060] The controller 14 is also used to control the second communication module 16 to disconnect the battery circuit 11 and the external cooling circuit 15 of the battery pack when the battery pack 111 is in a slow charging condition, in response to the battery pack 111 being in a non-heated state and the operating temperature of the integrated module 121 not being lower than the first preset temperature, and to control the third communication module 18 to disconnect the integrated circuit 12 and the external cooling circuit 17 of the integrated module.

[0061] In some embodiments, the controller 14 is further configured to: when the battery pack 111 is in a slow charging condition, in response to the battery pack 111 being in a heated state, or in response to the battery pack 111 being in a non-heated state and the operating temperature of the integrated module 121 being lower than a first preset temperature, control the first communication module 13 to disconnect the battery circuit 111 and the integrated circuit 12, control the second communication module 16 to connect the battery circuit 11 and the external cooling circuit 15 of the battery pack, and control the third communication module 16 to connect the integrated circuit 12 and the external cooling circuit 17 of the integrated module.

[0062] In some embodiments, the battery pack heating architecture 1 further includes a temperature sensor 19. The temperature sensor 19 is disposed at the water inlet end of the battery pack 11, and is used to detect the temperature at the water inlet end 111 to obtain a target temperature. At this time, the controller 14 is also used to: in response to the target temperature being greater than a second preset temperature, control the first communication module 13 to disconnect the connection between the battery circuit 11 and the integrated circuit 12, control the second communication module 16 to connect the battery circuit 11 and the external cooling circuit 15 of the battery pack, and control the third communication module 18 to connect the integrated circuit 12 and the external cooling circuit 17 of the integrated module.

[0063] This application also provides a method for heating a battery pack. Please refer to... Figure 2 , Figure 2 This is a schematic flowchart of a battery pack heating method provided in an embodiment of the present invention. The battery pack heating method can be executed by a vehicle, in-vehicle electronic devices, in-vehicle computers, etc., or by chips or processors within these devices. In this embodiment, it is described as being executed by a vehicle controller. The battery pack heating method includes the following steps:

[0064] Step S101: When the battery pack is in slow charging mode, obtain the working status of the battery pack.

[0065] Step S102: Determine whether the battery pack is in a heating state.

[0066] Step S103: In response to the battery pack not being in a heating state, determine whether the operating temperature of the integrated module is not lower than the first preset temperature.

[0067] In step S104, in response to the operating temperature not being lower than the first preset temperature, the battery circuit and the integrated circuit are connected, and the battery pack is heated by the operation of the battery water pump.

[0068] The above steps are described in detail below:

[0069] When the battery pack is in slow charging mode, the charging current is relatively small, and the self-heating of the battery pack is less than the heat dissipation from the external environment. Therefore, when the vehicle controller detects that the battery pack is in slow charging mode, it first obtains the operating status of the battery pack and then proceeds to step S102 to determine whether the operating status is a heating state. If it is a heating state, it indicates that the battery pack is working normally, and the process proceeds to step S102. Figure 3 Step S105 is shown: The battery circuit and the integrated circuit are disconnected through the first connecting module, the battery circuit and the external cooling circuit of the battery pack are connected through the second connecting module, and the integrated circuit and the external cooling circuit of the integrated module are connected through the third connecting module. At this time, the integrated circuit and the external cooling circuit of the integrated module are connected, and the battery circuit and the external cooling circuit of the battery pack are connected, and normal cooling and heating are performed according to the vehicle thermal management control strategy.

[0070] If the vehicle controller determines that the battery pack is not in a heating state, it proceeds to step S103 to further obtain the operating temperature of the integrated module and determine whether the operating temperature of the integrated module is not less than the first preset temperature. If the operating temperature is less than the first preset temperature, it also indicates that the battery pack is working normally, so it proceeds to step S105.

[0071] If the vehicle controller determines that the operating temperature of the integrated module is not lower than the first preset temperature, it proceeds to step S104, connecting the battery circuit and the integrated circuit, and controlling the battery water pump in the battery circuit to circulate the water and heat the battery pack. Through the circulation of the battery circuit and the integrated circuit, a portion of the energy obtained by the integrated module 121 from the charging pile can be used to heat the battery pack 111, which not only ensures a uniform battery pack temperature but also maintains the battery pack's temperature. In one embodiment, the vehicle controller also disconnects the battery circuit from the external cooling circuit of the battery pack through a second connection module and disconnects the integrated circuit from the external cooling circuit of the integrated module through a third connection module. The first preset temperature can be set according to actual conditions and is not specifically limited here. In one embodiment, the first preset temperature can be the average battery temperature.

[0072] During the process of heating the battery pack by connecting the battery circuit and the integrated circuit and operating the battery water pump, it is also necessary to constantly monitor the temperature of the battery pack's inlet to avoid overheating. Therefore, in some embodiments, after connecting the battery circuit and the integrated circuit and heating the battery pack in response to the operating temperature not being lower than a first preset temperature, the method further includes: step S106, detecting the temperature of the battery pack's inlet to obtain the target temperature. Step S107, determining whether the target temperature is not greater than a second preset temperature. In response to being greater than the second preset temperature, proceeding to step S105. In response to not being greater than the second preset temperature, proceeding to step S106.

[0073] The second preset temperature can be set according to actual conditions and is not specifically limited here. In one embodiment, the second preset temperature can be determined by the highest acceptable temperature of the battery pack cells, such as 45 degrees Celsius. When the vehicle controller determines that the target temperature is greater than the second preset temperature, it indicates that the battery pack temperature is overheating, and therefore the battery pack needs to be switched to normal operating state, i.e., proceed to step S105. When the vehicle controller determines that the target temperature is not greater than the second preset temperature, it continues to detect the temperature of the battery pack's water inlet, i.e., return to step S106.

[0074] It should be understood that, although Figure 2-3 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 2-3 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0075] The battery pack heating architecture, battery pack heating method, controller, and vehicle provided in this application embodiment, when the battery pack is in slow charging mode, the controller responds to the battery pack's working state being in a non-heating state and the working temperature of the integrated module not being lower than a first preset temperature, controls the first connection module to connect the battery circuit and the integrated circuit, and controls the battery water pump to work to heat the battery pack, thereby reducing the power consumption during the battery pack heating process.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery pack heating structure, characterized in that, include: Battery circuit, the battery circuit comprising: Battery pack; A battery-powered water pump, which is connected to the water inlet of the battery pack; An integrated circuit, the integrated circuit comprising: An integrated module that combines an on-board charger and a DC-DC converter; A first connecting module is disposed between the battery circuit and the integrated circuit. The first connecting module is used to connect or disconnect the battery circuit and the integrated circuit. An external cooling circuit for the battery pack is used to cool the battery pack when it is connected to the battery circuit; A second communication module is disposed between the battery circuit and the external cooling circuit of the battery pack. The second communication module is used to connect or disconnect the battery circuit and the external cooling circuit of the battery pack. An external cooling circuit for the integrated module is used to cool the integrated module when it is connected to the integrated circuit; A third connecting module is disposed between the integrated circuit and the external cooling circuit of the integrated module. The third connecting module is used to connect or disconnect the integrated circuit and the external cooling circuit of the integrated module. A temperature sensor is disposed at the water inlet end of the battery pack; The controller is configured to operate when the battery pack is in slow charging mode: In response to the battery pack being in a non-heated state and the integrated module operating temperature not being lower than a first preset temperature, the first communication module is controlled to connect the battery circuit and the integrated circuit, the battery water pump is controlled to operate to heat the battery pack, the second communication module is controlled to disconnect the battery circuit and the external cooling circuit of the battery pack, and the third communication module is controlled to disconnect the integrated circuit and the external cooling circuit of the integrated module. In response to the battery pack being in a heated state, or in response to the battery pack being in a non-heated state and the operating temperature of the integrated module being lower than a first preset temperature, the first communication module is controlled to disconnect the battery circuit and the integrated circuit, the second communication module is controlled to connect the battery circuit and the external cooling circuit of the battery pack, and the third communication module is controlled to connect the integrated circuit and the external cooling circuit of the integrated module. And after controlling the first communication module to connect the battery circuit and the integrated circuit, and controlling the battery water pump to work to heat the battery pack, in response to the temperature at the water inlet detected by the temperature sensor being greater than the second preset temperature, the first communication module is controlled to disconnect the connection between the battery circuit and the integrated circuit, the second communication module is controlled to connect the battery circuit and the external cooling circuit of the battery pack, and the third communication module is controlled to connect the integrated circuit and the external cooling circuit of the integrated module.

2. The battery pack heating structure according to claim 1, characterized in that, The first connecting module, the second connecting module, and the third connecting module are four-way valves.

3. The battery pack heating structure according to claim 1, characterized in that, The controller is a vehicle controller or a combination instrument.

4. A battery pack heating method, wherein the battery pack is heated by a battery pack heating structure, the battery pack heating structure comprising: An integrated circuit and a battery circuit are provided. The integrated circuit includes an integrated module that integrates an on-board charger and a DC-DC converter. The battery circuit includes a battery pack and a battery water pump. The battery pack heating architecture further includes an external cooling circuit for the battery pack, a second connecting module, an external cooling circuit for the integrated module, a third connecting module, and a temperature sensor disposed at the water inlet end of the battery pack. The second connecting module is disposed between the battery circuit and the external cooling circuit for the battery pack, and the third connecting module is disposed between the integrated circuit and the external cooling circuit for the integrated module. The battery pack heating method includes: When the battery pack is in slow charging mode, obtain the working status of the battery pack; Determine whether the operating state of the battery pack is a heating state; In response to the fact that the operating state of the battery pack is not the heating state, it is determined whether the operating temperature of the integrated module is not lower than a first preset temperature; In response to the operating temperature being not less than the first preset temperature, the battery circuit and the integrated circuit are connected, and the battery pack is heated by the operation of the battery water pump. At the same time, the battery circuit and the external cooling circuit of the battery pack are disconnected through the second connection module, and the integrated circuit and the external cooling circuit of the integrated module are disconnected through the third connection module. In response to the battery pack being in the heating state, or in response to the battery pack not being in the heating state and the operating temperature of the integrated module being lower than the first preset temperature, the battery circuit and the integrated circuit are disconnected through the first communication module, the battery circuit and the external cooling circuit of the battery pack are connected through the second communication module, and the integrated circuit and the external cooling circuit of the integrated module are connected through the third communication module. After connecting the battery circuit and the integrated circuit and heating the battery pack, the temperature of the water inlet of the battery pack is detected by the temperature sensor to obtain the target temperature; in response to the target temperature being greater than the second preset temperature, the connection between the battery circuit and the integrated circuit is disconnected, the connection between the battery circuit and the external cooling circuit of the battery pack is connected, and the connection between the integrated circuit and the external cooling circuit of the integrated module is also connected.

5. A controller, characterized in that, The controller is used to perform the battery pack heating method as described in claim 4.

6. A vehicle, characterized in that, The vehicle includes the controller as described in claim 5, and / or the battery pack heating architecture as described in any one of claims 1-3.

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