An integrated battery pack heating system
By integrating components such as a fuel heater, an electric water pump, and a fuel tank into an integrated battery pack heating system, the problem of insufficient driving range at low temperatures is solved. This system achieves efficient heating and heat dissipation of the battery pack, extends its service life, and improves the reliability of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河北宏业永盛汽车加热器股份有限公司
- Filing Date
- 2025-08-23
- Publication Date
- 2026-07-24
AI Technical Summary
Existing integrated battery pack heating systems cannot effectively extend battery pack lifespan, resulting in reduced driving range at low temperatures.
By integrating components such as fuel heater, electric water pump, fuel tank, plate heat exchanger, three-way valve, and stainless steel tee, an integrated battery pack heating system is formed. Combined with temperature protection components and auxiliary heat dissipation components, precise temperature control and effective heat dissipation are achieved.
It extends the battery pack's lifespan, ensures that the battery capacity at low temperatures is close to that at normal temperatures, guarantees that the battery pack's range is not affected at low temperatures, and can also provide heating for the cab and defrost the windshield, thus improving the system's reliability and the battery's continuous and efficient operation.
Smart Images
Figure CN224554430U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery pack technology, specifically to an integrated battery pack heating system. Background Technology
[0002] With the rapid development of the electric vehicle industry, the driving range of electric vehicles has always been a hot topic of concern. In particular, with the rapid development of new energy pure electric heavy-duty vehicles in the past two years, the capacity performance of power batteries varies at different temperatures in winter and cold regions. Low battery temperature will greatly reduce the driving range of electric vehicles. Therefore, how to heat the power battery when the temperature is too low and maintain an appropriate temperature is of great significance for the widespread adoption of electric vehicles.
[0003] According to a public announcement (Publication No.: CN110182017B), an automotive heat pump air conditioning system integrating battery pack heating and cooling includes a compressor, a first refrigerant solenoid three-way valve, an outdoor heat exchanger, a first electronic expansion valve, a second electronic expansion valve, an integrated heat exchanger, a second refrigerant solenoid three-way valve, a third refrigerant solenoid three-way valve, a third electronic expansion valve, an air conditioning unit, a water pump, a water proportional three-way valve, and a battery pack.
[0004] The aforementioned method, through the cooperation between components such as the compressor and the first refrigerant solenoid three-way valve, fails to address the issue of extending the battery pack's lifespan, resulting in an impact on the battery pack's range at low temperatures, which requires improvement. Utility Model Content
[0005] To overcome the above-mentioned defects, this utility model provides an integrated battery pack heating system, which solves the technical problem that an integrated battery pack heating system in related technologies / existing technologies cannot extend the service life of the battery pack.
[0006] According to one aspect, at least one embodiment of the present invention provides an integrated battery pack heating system, comprising: a battery pack, a nylon dust filter screen disposed on the side of the battery pack, a fuel heater disposed inside the battery pack, an electric water pump disposed inside the battery pack, an oil tank disposed inside the battery pack, a three-way valve disposed inside the battery pack, a plate heat exchanger, a three-way valve, and a connector disposed inside the battery pack, a temperature protection component disposed on the inner wall of the battery pack, the temperature protection component including a heat exchanger, the side of the heat exchanger being fixedly connected to the inner wall of the battery pack, a stainless steel right-angle elbow disposed on the inner wall of the battery pack, a stainless steel connector disposed at one end of the stainless steel right-angle elbow, a bracket fixedly connected to the inner wall of the battery pack, an oil tank fixedly connected to the top of the bracket, a three-way valve disposed on the top of the oil tank, a stainless steel three-way valve disposed on the inner wall of the battery pack, and a heater disposed on the inner wall of the battery pack.
[0007] For example, in an integrated battery pack heating system provided by at least one embodiment of the present invention, the system further includes: a connecting pipe extending through the top of the oil tank; the heat exchanger located on the side of the oil tank; and the oil tank located on the side of a nylon dust filter, the design of which facilitates dust filtration.
[0008] For example, in an integrated battery pack heating system provided by at least one embodiment of the present invention, there are two brackets that are symmetrical to each other along the vertical central axis of the oil tank, a number of stainless steel right-angle elbows are provided, and the heat exchanger is located at the top of the heater. This design is beneficial to extending the service life of the battery pack and ensuring that the capacity of the power battery at low temperature is close to that at normal temperature.
[0009] For example, in an integrated battery pack heating system provided by at least one embodiment of the present invention, the three-way valve is located on the side of the heater, the stainless steel three-way valve is located on the side of the heat exchanger, and several stainless steel joints are provided, which is beneficial to improving the connection efficiency.
[0010] For example, in an integrated battery pack heating system provided by at least one embodiment of this utility model, an auxiliary heat dissipation component is further included: an auxiliary heat dissipation component is provided at the bottom of the battery pack, the auxiliary heat dissipation component includes a connecting frame, the bottom of the connecting frame is fixedly connected to the bottom of the battery pack, a rotating shaft is rotatably connected to the inner wall of the connecting frame, blades are fixedly connected to the circumferential surface of the rotating shaft, a diagonal rod is fixedly connected to the circumferential surface of the rotating shaft, a half gear is rotatably connected to the inner wall of the connecting frame, a round rod is fixedly connected to the top of the half gear, a rotating wheel is fixedly connected to one end of the round rod, a rack is slidably connected to the inner wall of the connecting frame, a pressing rod is fixedly connected to the top of the rack, and a ventilation groove is provided at the top of the connecting frame to blow air and dissipate heat from the battery pack through the rotation of the blades.
[0011] According to another aspect, at least one embodiment of the present invention also provides an integrated battery pack heating system, comprising: the inclined rod being located on the displacement trajectory of the extrusion rod, the half gear and the rack meshing with each other, and the blade being located at the bottom of the ventilation slot. This design is advantageous for driving the rack to move when the half gear rotates.
[0012] For example, in an integrated battery pack heating system provided by at least one embodiment of the present invention, the system further includes: a plurality of blades arranged in a circumferential array on the circumferential surface of the rotating shaft; a plurality of ventilation slots arranged in a linear array on the top of the connecting frame; and a plurality of blades arranged thereon, which is beneficial to improve wind power and enhance heat dissipation.
[0013] For example, in an integrated battery pack heating system provided by at least one embodiment of the present invention, a sliding groove is provided on the inner wall of the connecting frame, and a limiting rod is slidably connected to the inner wall of the sliding groove. The end of the limiting rod away from the sliding groove is fixedly connected to the side of the rack. The design of the limiting rod is beneficial to restrict the movement trajectory of the rack and prevent the movement trajectory of the rack from deviating.
[0014] For example, in an integrated battery pack heating system provided by at least one embodiment of the present invention, a torsion spring is fixedly connected to the circumferential surface of the rotating shaft, and the end of the torsion spring away from the rotating shaft is fixedly connected to the inner wall of the connecting frame. The design of the torsion spring is beneficial to the automatic reset of the rotating shaft when it is not compressed.
[0015] For example, in an integrated battery pack heating system provided by at least one embodiment of the present invention, a spring is fixedly connected to one end of the rack, and the end of the spring away from the rack is fixedly connected to the inner wall of the connecting frame. The design of the spring is beneficial to the rack being able to automatically reset when it is not compressed.
[0016] The beneficial effects of the embodiments of this utility model are as follows: This invention integrates a fuel heater, electric water pump, fuel tank, plate heat exchanger, three-way valve, and stainless steel tee into a single unit through the coordinated operation of components such as the heat exchanger, nylon dust filter, heater, and heat exchanger within the temperature protection component. This facilitates customer connection and use, extends battery pack lifespan, ensures that the battery capacity at low temperatures is close to that at normal temperatures, and guarantees that the battery pack's range is not affected at low temperatures. It can also provide battery pack heating, cab heating, and windshield defrosting. Furthermore, it enables CAN control, allowing for unified control of the vehicle's thermal management via the CAN bus protocol.
[0017] In this invention, the system utilizes the interplay of components such as blades, inclined rods, extrusion rods, and half-gears within the auxiliary heat dissipation assembly. This allows the system to generate wind through the blades, effectively circulating air within the battery pack to prevent overheating and aid in heat dissipation. By adjusting the direction and intensity of the wind, the system ensures that the battery is less prone to overheating under high loads or prolonged use. The integrated heating and cooling system enables the battery pack to operate stably under various environmental conditions, improving system reliability. By optimizing heat dissipation and heating effects, the impact of temperature fluctuations on the battery can be reduced, ensuring continuous and efficient battery operation. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.
[0019] Figure 1 This is a three-dimensional appearance structure diagram of one embodiment of the present invention; Figure 2 This is a three-dimensional side view of the fuel tank structure in one embodiment of the present invention; Figure 3 This is a three-dimensional bottom view of the connecting frame structure in one embodiment of the present invention; Figure 4 This is a three-dimensional magnified structural diagram of the blade in one embodiment of the present invention; Figure 5 As one embodiment of this utility model Figure 4 A three-dimensional magnified structural diagram of A.
[0020] In the diagram: 1. Battery pack; 2. Nylon dust filter; 3. Temperature protection component; 31. Heat exchanger; 32. Stainless steel right-angle elbow; 33. Stainless steel connector; 34. Stainless steel tee; 35. Heater; 36. Three-way valve; 37. Oil tank; 38. Bracket; 4. Auxiliary heat dissipation component; 41. Connecting frame; 42. Shaft; 43. Blade; 44. Diagonal bar; 45. Ventilation slot; 46. Half gear; 47. Round rod; 48. Rotary wheel; 49. Rack; 410. Extrusion rod; 411. Slide groove; 412. Limiting rod; 413. Torsion spring; 414. Spring. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.
[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] like Figures 1-5 The diagram illustrates an integrated battery pack heating system according to an embodiment of the present invention, comprising: a battery pack 1, a nylon dust filter 2 disposed on the side of the battery pack 1, a fuel heater disposed inside the battery pack 1, an electronic water pump disposed inside the battery pack 1, an oil tank disposed inside the battery pack 1, a three-way valve disposed inside the battery pack 1, a plate heat exchanger, a three-way valve, and a connector disposed inside the battery pack 1, a temperature protection component 3 disposed on the inner wall of the battery pack 1, the temperature protection component 3 including a heat exchanger 31, the side of the heat exchanger 31 being fixedly connected to the inner wall of the battery pack 1, a stainless steel right-angle elbow 32 disposed on the inner wall of the battery pack 1, a stainless steel connector 33 disposed at one end of the stainless steel right-angle elbow 32, a bracket 38 fixedly connected to the inner wall of the battery pack 1, an oil tank 37 fixedly connected to the top of the bracket 38, a three-way valve 36 disposed on the top of the oil tank 37, a stainless steel three-way valve 34 disposed on the inner wall of the battery pack 1, and a heater 35 disposed on the inner wall of the battery pack 1.
[0028] In some examples, a connecting pipe runs through the top of the oil tank 37, and the heat exchanger 31 is located on the side of the oil tank 37. The oil tank 37 is located on the side of the nylon dust filter 2, which is designed to filter dust.
[0029] In some examples, there are two brackets 38, which are symmetrical to each other along the vertical central axis of the oil tank 37. Several stainless steel right-angle elbows 32 are provided. The heat exchanger 31 is located on top of the heater 35. This design helps to extend the service life of the battery pack 1 and ensure that the capacity of the power battery at low temperature is close to that at normal temperature.
[0030] In some examples, the three-way valve 36 is located on the side of the heater 35, the stainless steel tee 34 is located on the side of the heat exchanger 31, and several stainless steel fittings 33 are provided, which helps to improve the efficiency of the connection.
[0031] For example, such as Figures 1-5As shown, the system includes components such as a fuel heater, an electric water pump, a fuel tank, a three-way valve, a heat exchanger, a three-way valve, and connectors. At low temperatures, the fuel heater works first to heat the antifreeze in the heat exchanger. The antifreeze in the heat exchanger is circulated by the electric water pump to heat the antifreeze in the battery pack, thereby heating the battery pack. The fuel heater heats the hot side of the plate heat exchanger, and the cold side of the plate heat exchanger is connected to the battery pack circulation system. The three-way valve determines whether the battery pack channel is connected. A temperature sensor is installed on the battery pack channel. This temperature sensor is connected to the fuel heater controller. If the temperature sensor reading is below the set lower limit and a heating request is received, the fuel heater starts heating, and the three-way valve switches to the battery pack channel. When the temperature sensor reaches the set upper limit or the fuel heater's built-in temperature sensor reaches the set temperature control temperature, the fuel heater stops heating, the three-way valve closes the battery pack channel, and heating to the battery pack channel is stopped. In the prior art, the fuel heater 35 is used directly to heat the battery pack 1, which cannot guarantee the cleanliness of the battery fluid. The water jacket of the fuel heater 35 is welded from carbon steel plates. During welding, pressure testing, and factory testing, water is used as the circulating medium. After water flows through the water jacket's flow channels, varying degrees of surface rust will occur. If antifreeze is not circulated for a long time, the carbon steel flow channels will corrode, and the cleanliness of the entire circulation system cannot be guaranteed. This utility model uses a plate heat exchanger 31 to indirectly heat the battery fluid. The plate heat exchanger 31 is made of stainless steel, which can guarantee the cleanliness of the circulation system. This utility model uses a plate heat exchanger 31 to indirectly heat the battery fluid. Heat exchanger 31 indirectly heats the battery fluid. The flow direction of the circulating medium is switched via three-way valve 36, precisely controlling the temperature switching to prevent damage to battery pack 1 from the high temperature of heater 35. The fuel heater 35, electric water pump, fuel tank 37, plate heat exchanger 31, three-way valve 36, and stainless steel three-way valve 34 are integrated together for easy customer connection and use. This extends the service life of battery pack 1, ensuring that the capacity of the power battery at low temperatures is close to that at normal temperatures, and guaranteeing that the driving range of battery pack 1 is not affected at low temperatures. It can also serve the dual purpose of heating battery pack 1 and warming the cab. The windshield defrosting function can be controlled via CAN bus. The CAN bus protocol enables unified control of the vehicle's thermal management. The plate heat exchanger 31 has a heat exchange power of up to 12KW, ensuring the heat required for heating the battery pack 1 at low temperatures. When the temperature inside the battery pack 1 exceeds the set temperature, the three-way solenoid valve automatically switches to cab heating, allowing for independent cab heating to improve driving comfort. It can also provide an independent heat source for windshield defrosting and defogging, and can calculate the required heat based on engine power and antifreeze volume to achieve optimal matching.
[0032] like Figures 1-5As shown, this invention illustrates an integrated battery pack heating system according to another embodiment of the present invention. An auxiliary heat dissipation component 4 is provided at the bottom of the battery pack 1. The auxiliary heat dissipation component 4 includes a connecting frame 41, the bottom of which is fixedly connected to the bottom of the battery pack 1. A rotating shaft 42 is rotatably connected to the inner wall of the connecting frame 41. A blade 43 is fixedly connected to the circumferential surface of the rotating shaft 42, and a diagonal rod 44 is fixedly connected to the circumferential surface of the rotating shaft 42. A half-gear 46 is rotatably connected to the inner wall of the connecting frame 41, and a round rod 47 is fixedly connected to the top of the half-gear 46. A rotating wheel 48 is fixedly connected to one end of the round rod 47. A rack 49 is slidably connected to the inner wall of the connecting frame 41, and a pressing rod 410 is fixedly connected to the top of the rack 49. A ventilation slot 45 is provided at the top of the connecting frame 41, and the rotating blade 43 blows air to dissipate heat from the battery pack 1.
[0033] In some examples, the slant bar 44 is located on the displacement trajectory of the extrusion bar 410, the half gear 46 and the rack 49 mesh with each other, and the blade 43 is located at the bottom of the ventilation slot 45. This design is advantageous because it drives the rack 49 to move when the half gear 46 rotates.
[0034] In some examples, there are several blades 43 arranged in a circumferential array on the circumferential surface of the rotating shaft 42, and several ventilation slots 45 are arranged in a linear array on the top of the connecting frame 41. Several blades 43 are provided, which helps to improve wind power and enhance heat dissipation.
[0035] In some examples, a groove 411 is provided on the inner wall of the connecting frame 41, and a limiting rod 412 is slidably connected to the inner wall of the groove 411. The end of the limiting rod 412 away from the groove 411 is fixedly connected to the side of the rack 49. The design of the limiting rod 412 is beneficial to restrict the movement trajectory of the rack 49 and prevent the movement trajectory of the rack 49 from deviating.
[0036] In some examples, a torsion spring 413 is fixedly connected to the circumferential surface of the rotating shaft 42. The end of the torsion spring 413 away from the rotating shaft 42 is fixedly connected to the inner wall of the connecting frame 41. The design of the torsion spring 413 is conducive to the automatic reset of the rotating shaft 42 when it is not compressed.
[0037] In some examples, a spring 414 is fixedly connected to one end of the rack 49, and the end of the spring 414 away from the rack 49 is fixedly connected to the inner wall of the connecting frame 41. The design of the spring 414 is to allow the rack 49 to automatically reset when it is not compressed.
[0038] For example, such as Figures 1-5As shown, holding the rotating wheel 48 causes it to rotate clockwise. This rotation drives the round rod 47 and the half-gear 46 to rotate clockwise. Half of the teeth on the half-gear 46 mesh with the rack 49. When the half-gear 46 rotates clockwise, the half-tooth rotates onto the rack 49, causing the rack 49 to slide on the inner wall of the connecting frame 41. This sliding of the rack 49 causes the pressing rod 410 to move. The inclined rod 44 is located on the trajectory of the pressing rod 410. When the pressing rod 410 moves, it presses against the inclined rod 44. This pressure causes the inclined rod 44 to displace, which in turn causes the rotating shaft 42 to rotate. This rotation causes the blades 43 to rotate, generating a certain amount of wind. The bottom of the battery pack 1 has a ventilation opening. The air duct 45 has blades 43 located at its bottom. When the blades 43 rotate, the generated airflow is directly blown into the battery pack 1 through the air duct 45. When heat dissipation is needed inside the battery pack 1, the system can effectively circulate air inside the battery pack 1 by generating airflow through the blades 43, preventing the battery from overheating and helping to dissipate heat. By adjusting the direction and intensity of the airflow, it can be ensured that the battery is not prone to overheating under high load or long-term use. The integrated heating and cooling system enables the battery pack 1 to work stably under various environmental conditions, improving the reliability of the system. By optimizing the heat dissipation and heating effects, the impact of temperature fluctuations on the battery can be reduced, ensuring continuous and efficient operation of the battery.
[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. An integrated battery pack heating system, characterized in that, include: A battery pack (1) is provided with a nylon dust filter (2) on its side, a fuel heater is provided inside the battery pack (1), an electronic water pump is provided inside the battery pack (1), an oil tank is provided inside the battery pack (1), a three-way valve is provided inside the battery pack (1), a plate heat exchanger, a three-way valve, and a connector are provided inside the battery pack (1), and a temperature protection component (3) is provided on the inner wall of the battery pack (1). The temperature protection component (3) includes a heat exchanger (31), the side of which is fixedly connected to the inner wall of the battery pack (1). A stainless steel right-angle elbow (32) is provided on the inner wall of the battery pack (1). A stainless steel connector (33) is provided at one end of the stainless steel right-angle elbow (32). A bracket (38) is fixedly connected to the inner wall of the battery pack (1). An oil tank (37) is fixedly connected to the top of the bracket (38). A three-way valve (36) is provided on the top of the oil tank (37). A stainless steel tee (34) is provided on the inner wall of the battery pack (1). A heater (35) is provided on the inner wall of the battery pack (1).
2. The integrated battery pack heating system according to claim 1, characterized in that, A connecting pipe runs through the top of the oil tank (37), the heat exchanger (31) is located on the side of the oil tank (37), and the oil tank (37) is located on the side of the nylon dust filter (2).
3. The integrated battery pack heating system according to claim 2, characterized in that, Two brackets (38) are provided and are symmetrical to each other along the vertical central axis of the oil tank (37). Several stainless steel right-angle elbows (32) are provided. The heat exchanger (31) is located on top of the heater (35).
4. The integrated battery pack heating system according to claim 3, characterized in that, The three-way valve (36) is located on the side of the heater (35), the stainless steel tee (34) is located on the side of the heat exchanger (31), and several stainless steel joints (33) are provided.
5. An integrated battery pack heating system according to claim 4, characterized in that, The bottom of the battery pack (1) is provided with an auxiliary heat dissipation component (4). The auxiliary heat dissipation component (4) includes a connecting frame (41). The bottom of the connecting frame (41) is fixedly connected to the bottom of the battery pack (1). A rotating shaft (42) is rotatably connected to the inner wall of the connecting frame (41). A blade (43) is fixedly connected to the circumferential surface of the rotating shaft (42). A slanted rod (44) is fixedly connected to the circumferential surface of the rotating shaft (42). A half gear (46) is rotatably connected to the inner wall of the connecting frame (41). A round rod (47) is fixedly connected to the top of the half gear (46). A rotating wheel (48) is fixedly connected to one end of the round rod (47). A rack (49) is slidably connected to the inner wall of the connecting frame (41). A pressing rod (410) is fixedly connected to the top of the rack (49). A ventilation slot (45) is opened on the top of the connecting frame (41).
6. The integrated battery pack heating system according to claim 5, characterized in that, The inclined rod (44) is located on the displacement trajectory of the extrusion rod (410), the half gear (46) and the rack (49) mesh with each other, and the blade (43) is located at the bottom of the ventilation slot (45).
7. An integrated battery pack heating system according to claim 6, characterized in that, The blades (43) are arranged in a plurality of them and are arranged in a circumferential array on the circumferential surface of the rotating shaft (42). The ventilation slots (45) are arranged in a plurality of them and are arranged in a linear array on the top of the connecting frame (41).
8. An integrated battery pack heating system according to claim 7, characterized in that, The inner wall of the connecting frame (41) is provided with a sliding groove (411), and a limiting rod (412) is slidably connected to the inner wall of the sliding groove (411). The end of the limiting rod (412) away from the sliding groove (411) is fixedly connected to the side of the rack (49).
9. An integrated battery pack heating system according to claim 8, characterized in that, A torsion spring (413) is fixedly connected to the circumferential surface of the rotating shaft (42), and the end of the torsion spring (413) away from the rotating shaft (42) is fixedly connected to the inner wall of the connecting frame (41).
10. An integrated battery pack heating system according to claim 9, characterized in that, One end of the rack (49) is fixedly connected to a spring (414), and the end of the spring (414) away from the rack (49) is fixedly connected to the inner wall of the connecting frame (41).