Battery replacement heavy truck heat management system and method with driving system waste heat recovery function

Abstract

The embodiment of the invention provides a heat management system and method for a battery-changing heavy truck with a driving system waste heat recovery function, and relates to the technical field of heat management, the system comprises a battery heat exchange water path, a heat management module and a motor electric control heat dissipation loop, and / or a water path quick-plug connector used for transmitting a heat management medium is arranged between the heat management module and the motor electric control heat dissipation loop, and the heat management module heats the heat management medium in the battery heat exchange water path by using the heat management medium in the motor electric control heat dissipation loop. The heat management module is used for exchanging between the motor electric control heat dissipation loop and the battery heat exchange water way, the waste heat exchange efficiency of the motor electric control heat dissipation loop is improved, heat dissipation or heating treatment is achieved, and the heat energy utilization efficiency of the loop is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management, and more particularly, to a thermal management system and method for a battery-swap heavy truck with the function of recovering waste heat from the drive system. Background Art

[0002] Currently, new energy heavy trucks are widely used in important scenarios such as urban muck transportation and port transportation. For example, in transportation scenarios such as sand, gravel, soil, cement logistics, steel, and mines, using new energy heavy trucks can not only effectively save costs but also improve operation efficiency.

[0003] However, new energy heavy trucks often face the problem of battery energy consumption. In cold regions in the north, the driving range of new energy heavy trucks decays significantly as the temperature drops. Due to the poor low-temperature performance of the battery, new energy heavy trucks often need to use a thermal management system to maintain the battery temperature above a certain temperature threshold to ensure the battery performance of new energy heavy trucks. In current common truck vehicle thermal management solutions, the battery is generally heated by the power supply of the battery-swap battery so that the temperature of the battery itself is heated above the temperature threshold. Such solutions will consume part of the battery's electrical energy for heating the battery, resulting in increased power consumption and reduced driving range.

[0004] On the other hand, there is a phenomenon of waste heat in the vehicle. For example, power components such as motors and motor controllers on the vehicle will generate a large amount of waste heat, which needs to be discharged into the air. Therefore, it is necessary to provide a thermal management solution that recovers and utilizes the waste heat at the vehicle end of new energy heavy trucks to heat the battery-swap battery. Summary of the Invention

[0005] To solve the above technical problems, the present application provides a thermal management system and method for a battery-swap heavy truck with the function of recovering waste heat from the drive system.

[0006] In a first aspect, the present application provides a thermal management system for a battery-swap heavy truck with the function of recovering waste heat from the drive system, including a battery heat exchange water circuit, a thermal management module, and a motor and electronic control heat dissipation circuit. A water quick connector for transmitting a thermal management medium is provided between the battery heat exchange water circuit and the thermal management module, and / or between the thermal management module and the motor and electronic control heat dissipation circuit. The thermal management module heats the thermal management medium in the battery heat exchange water circuit by using the thermal management medium in the motor and electronic control heat dissipation circuit.

[0007] In one embodiment, the thermal management module includes a water-air radiator, and the water-air radiator is used to cool the thermal management medium in the battery heat exchange water circuit.

[0008] In one embodiment, the thermal management module further includes a refrigeration module, and the refrigeration module and the water-air radiator are used to cool the thermal management medium in the battery heat exchange water circuit.

[0009] In one embodiment, the heat management system of the battery-swap heavy truck with the waste heat recovery function of the drive system is used for a battery-swap heavy truck, which includes a frame and a battery-swap battery pack detachably mounted on the frame. The battery-swap battery pack includes a plurality of battery boxes, and the battery heat exchange water circuit includes heat exchange pipelines respectively passing through each battery box.

[0010] In one embodiment, the battery heat exchange water circuit further includes a plurality of temperature sensors provided in each battery box;

[0011] When the lowest temperature detected by each of the temperature sensors is less than a preset temperature threshold, and the temperature of the motor and electronic control heat dissipation circuit is greater than the preset temperature threshold, the heat management module uses the heat management medium in the motor and electronic control heat dissipation circuit to heat the heat management medium in the battery heat exchange water circuit.

[0012] In one embodiment, the heat management module further includes a plate heat exchanger, and the heat management medium in the motor and electronic control heat dissipation circuit exchanges heat with the heat management medium in the battery heat exchange water circuit through the plate heat exchanger.

[0013] In one embodiment, the heat management module is used to mix the heat management medium in the motor and electronic control heat dissipation circuit and the heat management medium in the battery heat exchange water circuit to achieve heat exchange.

[0014] In one embodiment, the heat management module includes a refrigeration module, a water pump, a first valve group, a PTC heater, a second valve group and a water-air radiator. When using the heat management medium in the motor and electronic control heat dissipation circuit to heat the heat management medium in the battery heat exchange water circuit, the refrigeration module in the heat management module does not start refrigeration, the first valve group controls the heat exchange between the heat management module and the motor and electronic control heat dissipation circuit, and the second valve group controls the heat management medium not to pass through the water-air radiator.

[0015] In a second aspect, the present application provides a heat management method for a battery-swap heavy truck with the waste heat recovery function of the drive system, which is applied to the heat management system of the battery-swap heavy truck with the waste heat recovery function of the drive system provided in the first aspect. The method includes:

[0016] The heat management module uses the heat management medium in the motor and electronic control heat dissipation circuit to heat the heat management medium in the battery heat exchange water circuit.

[0017] In one embodiment, the method further includes:

[0018] When the lowest temperature detected by each temperature sensor is lower than the preset temperature threshold, and the lowest temperature of the heat management medium in the motor and electronic control heat dissipation circuit is higher than the preset temperature threshold, the heat management module uses the heat management medium in the motor and electronic control heat dissipation circuit to heat the heat management medium in the battery heat exchange water circuit.

[0019] The above-mentioned heat management system and method for a battery swapping heavy truck with a driving system waste heat recovery function provided by the present application utilize a heat management module to exchange between the motor and electronic control heat dissipation circuit and the battery heat exchange water circuit, improve the waste heat exchange efficiency of the motor and electronic control heat dissipation circuit, realize heat dissipation or heating treatment, and improve the heat energy utilization efficiency of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 FIG. 1 shows a schematic structural diagram of a heat management system for a battery swapping heavy truck with a driving system waste heat recovery function provided by the present application;

[0022] Figure 2 FIG. 2 shows another schematic structural diagram of a heat management system for a battery swapping heavy truck with a driving system waste heat recovery function provided by the present application;

[0023] Figure 3 FIG. 3 shows another schematic structural diagram of a heat management system for a battery swapping heavy truck with a driving system waste heat recovery function provided by the present application;

[0024] Figure 4 FIG. 4 shows a schematic structural diagram of a battery heat exchange water circuit provided by the present application;

[0025] Figure 5 FIG. 5 shows another schematic structural diagram of a heat management system for a battery swapping heavy truck with a driving system waste heat recovery function provided by the present application;

[0026] Figure 6 FIG. 6 shows a schematic structural diagram of a heat management module provided by the present application;

[0027] Figure 7 FIG. 7 shows a schematic structural diagram of a heat management module provided by the present application;

[0028] Figure 8 FIG. 8 shows a schematic structural diagram of a motor and electronic control heat dissipation circuit provided by the present application.

[0029] Icons: 100 - Thermal management system for battery - swapping heavy - duty trucks with waste heat recovery function of the drive system, 101 - Battery hot - water circuit, 102 - Thermal management module, 103 - Motor and electronic control heat dissipation circuit, 104 - Quick - connect fitting for water circuit; 105 - Plate heat exchanger. Detailed implementation mode

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0034] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0035] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0036] Embodiment 1

[0037] This embodiment provides a thermal management system for battery - swapping heavy - duty trucks with waste heat recovery function of the drive system.

[0038] Please refer to Figure 1, the heat management system 100 of the battery - swapping heavy - duty truck with the function of recovering the waste heat of the drive system includes a battery cooling water circuit 101, a heat management module 102, and a motor and electronic control cooling circuit 103. Between the battery cooling water circuit 101 and the heat management module 102, and / or between the heat management module 102 and the motor and electronic control cooling circuit 103, there is a quick - connect water joint (not shown) for transmitting the heat management medium. The heat management module 102 uses the heat management medium in the motor and electronic control cooling circuit 103 to heat the heat management medium in the battery cooling water circuit 101.

[0039] In this embodiment, the heat management medium can be water. When the minimum temperature of the heat management medium in the motor and electronic control cooling circuit 103 is higher than the temperature of the heat management medium in the battery cooling water circuit 101, the heat management module 102 can use the heat management medium in the motor and electronic control cooling circuit 103 to heat - treat the heat management medium in the battery cooling water circuit 101. When the maximum temperature of the heat management medium in the motor and electronic control cooling circuit 103 is lower than the temperature of the heat management medium in the battery cooling water circuit 101, the heat management module 102 can use the heat management medium in the motor and electronic control cooling circuit 103 to cool - treat the heat management medium in the battery cooling water circuit 101.

[0040] See Figure 2 , between the battery cooling water circuit 101 and the heat management module 102, there is a quick - connect water joint 104 for transmitting the heat management medium. The heat management medium of the battery cooling water circuit 101 enters the heat management module 102 through the quick - connect water joint 104. The heat management module 102 can be connected to the motor and electronic control cooling circuit 103, and then, through the mixing of the heat management medium, the purpose of heating or cooling the heat management medium of the battery cooling water circuit 101 can be achieved. The heat management module 102 can exchange heat with the motor and electronic control cooling circuit 103 in an isolated manner to achieve the purpose of heating or cooling the heat management medium of the battery cooling water circuit 101.

[0041] See Figure 3 , between the heat management module 102 and the motor and electronic control cooling circuit 103, there is a quick - connect water joint 104 for transmitting the heat management medium. The heat management medium of the battery cooling water circuit 101 enters the heat management module 102, and the heat management module 102 inputs the heat management medium into the motor and electronic control cooling circuit 103 through the quick - connect water joint 104.

[0042] In this way, the waste heat of the motor and electronic control cooling circuit can be exchanged using the quick - connect water joint, improving the waste - heat exchange efficiency of the motor and electronic control.

[0043] It should be noted that the heat management system of the battery-swap heavy truck with the waste heat recovery function of the drive system in this embodiment is used for a battery-swap heavy truck, which includes a frame and a battery-swap battery pack detachably installed on the frame. The battery-swap heavy truck has a drive system including a motor and electronic control heat dissipation circuit 103. Refer to Figure 4 , the battery-swap battery pack includes a plurality of battery boxes 1012, and the battery heat exchange water circuit 101 includes heat exchange pipelines 1013 respectively passing through each battery box 1012. In addition, the battery heat exchange water circuit 101 further includes a water tank 1011, and the water tank 1011 is arranged on the heat exchange pipeline 1013.

[0044] In one embodiment, the battery heat exchange water circuit 101 further includes a plurality of temperature sensors (not shown) arranged in each battery box 1012; when the lowest temperature detected by each of the temperature sensors is less than a preset temperature threshold, and the temperature of the motor and electronic control heat dissipation circuit is greater than the preset temperature threshold, the heat management module uses the heat management medium in the motor and electronic control heat dissipation circuit to heat the heat management medium in the battery heat exchange water circuit. Among them, the preset temperature threshold can be obtained according to empirical data or experimental data.

[0045] In this embodiment, a plurality of temperature sensors can detect the temperature of the heat management medium. When the lowest temperature detected by each of the temperature sensors is less than the preset temperature threshold, and the lowest temperature of the heat management medium in the motor and electronic control heat dissipation circuit is greater than the preset temperature threshold, the heat management module uses the heat management medium in the motor and electronic control heat dissipation circuit to heat the heat management medium in the battery heat exchange water circuit for temperature adjustment, improving the waste heat utilization efficiency of the motor and electronic control heat dissipation circuit.

[0046] In this way, the waste heat of the motor and electronic control can be fully utilized to heat the heat management medium in the battery heat exchange water circuit, making full use of the waste heat.

[0047] In one embodiment, the battery-swap heavy truck further includes a frame, and the heat management module is arranged on the frame and / or the battery-swap battery pack.

[0048] In this way, multiple installation methods of the heat management module can be provided. When the heat management module is arranged on the frame, the space of the battery-swap battery pack can be reduced; when the heat management module is arranged on the battery-swap battery pack, the space occupied by the battery-swap heavy truck body can be saved, and the heat management module can also be dispersedly arranged according to needs, with a part of it arranged on the frame and another part arranged in the battery-swap battery pack to improve the installation flexibility of the heat management module.

[0049] In this embodiment, combining Figure 2 with Figure 4 , we can obtain Figure 5The shown heat management system for battery swapping heavy trucks with waste heat recovery function of the drive system. Figure 3 Combined with Figure 4 , the corresponding heat management system for battery swapping heavy trucks with waste heat recovery function of the drive system can also be obtained, which is not limited herein.

[0050] Please refer to Figure 6 . The heat management module 102 includes a water-air radiator 1026, and the water-air radiator 1026 is used to cool the heat management medium in the battery swapping water circuit 101. The heat management module 102 further includes a refrigeration module 1021, and the refrigeration module 1021 and the water-air radiator 1026 are used to cool the heat management medium in the battery swapping water circuit 101.

[0051] In an embodiment, when the temperature of the heat management medium in the battery swapping water circuit 101 is relatively high and a relatively large temperature reduction is required, the refrigeration module 1021 and the water-air radiator 1026 can be started simultaneously to cool the heat management medium in the battery swapping water circuit 101. When the temperature of the heat management medium in the battery swapping water circuit 101 is relatively low and a relatively small temperature reduction is required, the refrigeration module 1021 or the water-air radiator 1026 can be started alone to cool the heat management medium in the battery swapping water circuit 101.

[0052] Please refer to again Figure 6 . The heat management module 102 further includes a plate heat exchanger 105, and the heat management medium in the motor and electronic control cooling circuit exchanges heat with the heat management medium in the battery swapping water circuit 101 through the plate heat exchanger 105. Combined with Figure 2 and Figure 6 , the heat management medium in the battery swapping water circuit 101 enters the heat management module 102 through a waterway quick connector 104. The plate heat exchanger 105 of the heat management module 102 exchanges heat with the heat management mechanism in the heat management module 102, and transfers the heat to the heat management medium in the motor and electronic control cooling circuit.

[0053] Refer to Figure 7 . The heat management module 102 is used to mix the heat management medium in the motor and electronic control cooling circuit 103 and the heat management medium in the battery swapping water circuit 101 to achieve heat exchange.

[0054] It should be supplemented that the solution concentrations of the heat management medium in the motor and electronic control cooling circuit 103 and the heat management medium in the battery swapping water circuit 101 are approximately the same, and the mixing process will have no or little impact on the performance of the heat management medium.

[0055] Further supplementary description is that, in this embodiment, when the component similarity between the heat management medium in the motor and electronic control heat dissipation loop 103 and the heat management medium in the battery heat exchange water loop 101 is less than or equal to a preset component similarity threshold, the heat management media in the motor and electronic control heat dissipation loop 103 and the battery heat exchange water loop 101 are mixed in the heat management module 102 to achieve heat exchange.

[0056] Combined with Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 ,the heat management module 102 includes a refrigeration module 1021, a first water pump 1022, a first valve group 1023, a PTC heater 1024, a second valve group 1025 and a water-air radiator 1026. When using the heat management medium in the motor and electronic control heat dissipation loop 103 to heat the heat management medium in the battery heat exchange water loop 101, the refrigeration module 1021 in the heat management module 102 does not start refrigeration, the first valve group 1023 controls the heat exchange between the heat management module 102 and the motor and electronic control heat dissipation loop 103, and the second valve group 1025 controls the heat management medium not to pass through the water-air radiator 1026.

[0057] Exemplarily, the first valve group 1023 can be a three-way pipe, and the second valve group 1025 can also be a three-way pipe.

[0058] In Figure 6 ,when using the heat management medium in the motor and electronic control heat dissipation loop 103 to heat the heat management medium in the battery heat exchange water loop 101, the output end of the battery heat exchange water loop 101 is connected to the input end of the refrigeration module 1021, the output end of the refrigeration module 1021 is connected to the input end of the first water pump 1022, and the refrigeration module 1021 does not start; the output end of the first water pump 1022 is connected to the first end of the first valve group 1023; the second end of the first valve group 1023 is connected to the first input end of the plate heat exchanger 105, and the second input end of the plate heat exchanger 105 is connected to the output end of the motor and electronic control heat dissipation loop 103. The third end of the first valve group 1023 is not connected to the input end of the PTC heater 1024; the first output end of the plate heat exchanger 105 is connected to the input end of the PTC heater 1024; the second output end of the plate heat exchanger 105 is also connected to the input end of the motor and electronic control heat dissipation loop 103; the output end of the PTC heater 1024 is connected to the first end of the second valve group 1025; the second end of the second valve group 1025 is connected to the input end of the battery heat exchange water loop 101; the third end of the second valve group 1025 is not connected to the input end of the water-air radiator 1026; the output end of the water-air radiator 1026 is not connected to the input end of the battery heat exchange water loop 101.

[0059] InFigure 7 When the heat management medium in the motor and electronic control heat dissipation circuit 103 is used to heat the heat management medium in the battery heat exchange water circuit 101, the output end of the battery heat exchange water circuit 101 is connected to the input end of the refrigeration module 1021, the output end of the refrigeration module 1021 is connected to the input end of the first water pump 1022, and the refrigeration module 1021 does not start; the output end of the first water pump 1022 is connected to the first end of the first valve group 1023; the second end of the first valve group 1023 is connected to the input end of the motor and electronic control heat dissipation circuit 103; the third end of the first valve group 1023 is not connected to the input end of the PTC heater 1024; the input end of the PTC heater 1024 is also connected to the output end of the motor and electronic control heat dissipation circuit 103; the output end of the PTC heater 1024 is connected to the first end of the second valve group 1025; the second end of the second valve group 1025 is connected to the input end of the battery heat exchange water circuit 101; the third end of the second valve group 1025 is not connected to the input end of the water-air radiator 1026; the output end of the water-air radiator 1026 is not connected to the input end of the battery heat exchange water circuit 101.

[0060] In this way, the path of the heat management module can be shortened, and the heat dissipation rate can be reduced.

[0061] See Figure 8 , the motor and electronic control heat dissipation circuit 103 includes a water tank 1031, a second water pump 1032, a motor and / or a motor controller 1033, a third valve group 1034, and a radiator 1035. The third valve group 1034 is used to control whether the heat management medium enters the radiator 1035. When the heat management medium in the motor and electronic control heat dissipation circuit 103 heats the heat management medium of the heat management module 102, the third valve group 1034 controls the heat management medium not to pass through the radiator 1035. When the heat management medium in the motor and electronic control heat dissipation circuit 103 cools the heat management medium of the heat management module 102, the third valve group 1034 controls the heat management medium to pass through the radiator 1035. The third valve group 1034 can be a three-way pipe, and the third valve group 1034 controls whether the heat management medium enters the radiator 1035 by controlling the closing or opening of the valve.

[0062] The heat management system of the battery-swap heavy truck with the waste heat recovery function of the drive system provided in this embodiment exchanges between the motor and electronic control heat dissipation circuit and the battery heat exchange water circuit in the drive system by using the heat management module, improves the waste heat exchange efficiency of the motor and electronic control heat dissipation circuit, realizes heat dissipation or heating treatment, and improves the thermal energy utilization efficiency of the circuit.

[0063] Embodiment 2

[0064] This embodiment provides a heat management method for a battery-swap heavy truck with a waste heat recovery function of the drive system. This method is applied to the heat management system of the battery-swap heavy truck with the waste heat recovery function of the drive system provided in Embodiment 1. This method includes:

[0065] The thermal management module heats the thermal management medium in the battery heat exchange water circuit by using the thermal management medium in the motor and electronic control heat dissipation circuit.

[0066] In one embodiment, the method further includes:

[0067] When the lowest temperature detected by each temperature sensor is less than the preset temperature threshold, and the lowest temperature of the thermal management medium in the motor and electronic control heat dissipation circuit is greater than the preset temperature threshold, the thermal management module heats the thermal management medium in the battery heat exchange water circuit by using the thermal management medium in the motor and electronic control heat dissipation circuit.

[0068] The battery swapping heavy truck thermal management method with the function of recovering waste heat from the drive system provided in this embodiment, when applied to the battery swapping heavy truck thermal management system with the function of recovering waste heat from the drive system provided in Embodiment 1, can achieve the functions that the battery swapping heavy truck thermal management system with the function of recovering waste heat from the drive system provided in Embodiment 1 can achieve. To avoid repetition, it will not be elaborated here.

[0069] The battery swapping heavy truck thermal management method with the function of recovering waste heat from the drive system provided in this embodiment uses the thermal management module to exchange between the motor and electronic control heat dissipation circuit and the battery heat exchange water circuit, improves the waste heat exchange efficiency of the motor and electronic control heat dissipation circuit, realizes heat dissipation or heating treatment, and improves the thermal energy utilization efficiency of the circuit.

[0070] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A heat management system for a battery swapping heavy truck with the function of recovering waste heat from the drive system, comprising a battery cooling water circuit, a heat management module and a motor and electronic control cooling circuit, characterized in that A waterway quick connector for transmitting a heat management medium is provided between the battery replacement hot water circuit and the heat management module, and / or between the heat management module and the motor and electronic control heat dissipation circuit. The heat management module heats the heat management medium in the battery replacement hot water circuit by using the heat management medium in the motor and electronic control heat dissipation circuit.

2. The heat management system for a battery swapping heavy truck with the function of recovering waste heat from the drive system according to claim 1, wherein, The heat management module includes a water-air radiator, and the water-air radiator is used to cool the heat management medium in the battery replacement hot water circuit.

3. The heat management system of the battery swapping heavy truck with the waste heat recovery function of the drive system according to claim 2, characterized in that, The heat management module further includes a refrigeration module, and the refrigeration module and the water-air radiator are used to cool the heat management medium in the battery replacement hot water circuit.

4. The heat management system for a battery-swap heavy truck with the function of recovering waste heat from the drive system according to claim 1, characterized in that, The battery swapping heavy truck heat management system with the driving system waste heat recovery function is used for a battery swapping heavy truck. The battery swapping heavy truck includes a vehicle frame and a battery swapping battery pack detachably mounted on the vehicle frame. The battery swapping battery pack includes a plurality of battery boxes, and the battery replacement hot water circuit includes heat exchange pipelines respectively passing through each battery box.

5. The heat management system for a battery-swap heavy truck with the function of recovering waste heat from the drive system according to claim 4, wherein The battery replacement hot water circuit further includes a plurality of temperature sensors provided in each battery box; When the lowest temperature detected by each of the temperature sensors is less than a preset temperature threshold, and the temperature of the motor and electronic control heat dissipation circuit is greater than the preset temperature threshold, the heat management module heats the heat management medium in the battery replacement hot water circuit by using the heat management medium in the motor and electronic control heat dissipation circuit.

6. The heat management system for a battery swapping heavy truck with the function of recovering waste heat from the drive system according to any one of claims 1-4, characterized in that, The heat management module further includes a plate heat exchanger, and the heat management medium in the motor and electronic control heat dissipation circuit exchanges heat with the heat management medium in the battery replacement hot water circuit through the plate heat exchanger.

7. The heat management system for a battery-swap heavy truck with the function of recovering waste heat from the drive system according to any one of claims 1-4, characterized in that, The heat management module is used to mix the heat management medium in the motor and electronic control heat dissipation circuit and the heat management medium in the battery replacement hot water circuit to achieve heat exchange.

8. The heat management system for a battery swapping heavy truck with the function of recovering waste heat from the drive system according to claim 4, characterized in that, The heat management module includes a refrigeration module, a water pump, a first valve group, a PTC heater, a second valve group and a water-air radiator. When heating the heat management medium in the battery replacement hot water circuit by using the heat management medium in the motor and electronic control heat dissipation circuit, the refrigeration module in the heat management module does not start refrigeration. The first valve group controls the heat exchange between the heat management module and the motor and electronic control heat dissipation circuit, and the second valve group controls the heat management medium not to pass through the water-air radiator.

9. A heat management method for a battery-swap heavy truck with the function of recovering waste heat from the drive system, characterized in that, Applied to the battery swapping heavy truck heat management system with the driving system waste heat recovery function as described in any one of claims 1 to 8, the battery swapping heavy truck heat management method with the driving system waste heat recovery function includes: The heat management module heats the heat management medium in the battery replacement hot water circuit by using the heat management medium in the motor and electronic control heat dissipation circuit.

10. The heat management method for a battery swapping heavy truck with the function of recovering waste heat from the drive system according to claim 9, characterized in that, The method further includes: When the lowest temperature detected by each temperature sensor is less than a preset temperature threshold, and the lowest temperature of the heat management medium in the motor and electronic control heat dissipation circuit is greater than the preset temperature threshold, the heat management module heats the heat management medium in the battery replacement hot water circuit by using the heat management medium in the motor and electronic control heat dissipation circuit.

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