A combined battery pack case

Abstract

The application relates to the technical field of battery cooling, in particular to a combined battery PACK box body, which comprises an inner box body, an outer box body, a top cover and a bottom box, the inner box body is located at the top of the bottom box and is fixedly connected with the bottom box, the top cover is located at the top of the inner box body and is detachably connected with the inner box body, and the outer box body is located outside the inner box body and is rotationally connected with the inner box body. The fixed-point heat dissipation assembly is arranged, during the movement of the output end of the electric telescopic rod one, the connecting rod five is driven to move along the movement direction of the output end of the electric telescopic rod one, so that the rubber ring and the rubber block are in a non-contact state, the connecting ring and the connecting plate two do not rotate along the rotating shaft, and the fixed-point forced heat dissipation of the individual battery body is completed, that is, the local overheating problem is solved, and the extension length of the electric telescopic rod one is proportional to the difference between the measured temperature and the optimal working temperature (that is, the power of the fan one).

Description

Technical Field

[0001] This invention relates to the field of battery cooling technology, and more specifically to a combined battery pack housing. Background Technology

[0002] As the electric vehicle market continues to expand, higher demands are being placed on the performance, safety, and reliability of power batteries. The battery pack housing, as a key component housing and protecting the battery pack, directly impacts the performance of the entire battery system. With continuous advancements in battery technology, battery energy density is gradually increasing, requiring the battery pack housing to better accommodate the heat dissipation needs of high-energy-density batteries. Poor heat dissipation can lead to excessively high battery temperatures, affecting battery performance and lifespan, and even causing safety incidents.

[0003] Chinese invention patent application number 202310664053.2 proposes a combined battery pack housing. However, when multiple battery cells operate simultaneously, even those produced in the same batch may exhibit slight differences in the performance of their positive and negative electrode materials, electrolytes, and other raw materials. For example, some cells may have poor conductivity in their positive electrode material, resulting in higher resistance during charging and discharging and generating more heat. Alternatively, the electrolyte may have low ionic conductivity, affecting the ion transport efficiency within the cell and causing localized heat accumulation and temperature differences, i.e., localized overheating. Existing technologies lack measures to address this localized overheating. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a combined battery pack housing, which can effectively solve the problem of local overheating in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a combined battery pack housing, including an inner housing, an outer housing, a top cover, and a bottom housing. The inner housing is located on top of the bottom housing and is fixedly connected to it. The top cover is located on top of the inner housing and is detachably connected to it. The outer housing is located outside the inner housing and is rotatably connected to it. A central circular box is fixedly connected to the center of the inner housing. A fixed-point heat dissipation component is provided inside the bottom housing. A heat dissipation groove is formed in a ring array on the outer side of the inner housing.

[0007] The fixed-point heat dissipation assembly includes a stepper-driven rotating shaft, a second connecting plate, a connecting ring, and a first electric telescopic rod. A first fan is mounted on the top of the second connecting plate. The connecting ring is located inside the base box and rotatably connected to it. The rotating shaft is also located inside the base box and rotatably connected to it. The second connecting plate is located on one side of the connecting ring and fixedly connected to it. The first electric telescopic rod is fixedly connected to the second connecting plate. A fixed housing is fixedly connected to the top of the second connecting plate. A sliding resistor rod is located inside the fixed housing. The body of the sliding resistor rod slides in contact with a sliding plate fixedly connected to the output end of the first electric telescopic rod. The first fan, the sliding resistor rod, and the sliding plate are electrically connected. A DC power supply forms an adjustment circuit. During the sliding motion of the slider along the sliding resistor rod towards the fan, the effective resistance of the sliding resistor rod and the slider in the adjustment circuit decreases. A connecting rod five is fixedly connected to the outer side of the output end of the electric telescopic rod one. A rubber block is fixedly connected to one end of the connecting rod five. A rubber ring is fixedly connected to the outer side of the rotating shaft. The rubber ring and the rubber block can be engaged or separated. Two connecting plates one are fixedly connected to the outer side of the connecting ring. An infrared temperature sensor is provided on the top of each of the two connecting plates one. The measuring point is on the side of the battery cell body. A controller and an external temperature sensor are respectively provided inside and outside the inner casing.

[0008] According to the above-mentioned combined battery PACK box, the bottom of each of the multiple battery cells is provided with tabs, the top of the inner side of the bottom box is fixedly connected with a partition plate, the tabs are snapped into the partition plate, the bottom of the bottom box is provided with an adjustment component and a dust removal component, the outer side of the outer box is provided with a second heat dissipation groove at a corresponding position, the second heat dissipation groove is offset from the first heat dissipation groove and communicates, and the bottom of the outer box is fixedly connected with a toothed ring.

[0009] The adjustment assembly includes a gear, an electric telescopic rod, a rack, and a guide rail. The electric telescopic rod is located at the bottom of the base box and is fixedly connected to it. The rack is fixedly connected to the output end of the electric telescopic rod. The guide rail is located at the bottom of the base box and is fixedly connected to it. The rack is located on the outside of the guide rail and is slidably connected to it. The gear is located at the bottom of the base box and is rotatably connected to it. The gear engages with the gear ring and the rack at different positions on one side of its circumference.

[0010] According to the above-mentioned combined battery pack housing, a filter screen is embedded in the bottom of the base box. The dust removal component includes a mounting plate, a connecting rod one, a dust removal disc, a gear two, and a connecting rod two. The mounting plate is located at the bottom of the base box and is fixedly connected to it. A stepper motor is fixedly connected to the bottom of the mounting plate. The output end of the stepper motor passes through the mounting plate and is fixedly connected to the rotating shaft. A gear ring two is fixedly connected to one end of the mounting plate and outside the rotating shaft. The connecting rod two is located outside the gear ring two and is fixedly connected to it. The connecting rod one is located at the bottom end of the mounting plate and is rotatably connected to it. The connecting rod one passes through the connecting rod two and is rotatably connected to it. An electric telescopic rod three is rotatably connected to one end of the connecting rod two. The gear two is located outside the connecting rod one and is fixedly connected to it. The output end of the electric telescopic rod three is rotatably connected to the gear two. The dust removal disc is located at one end of the connecting rod one and is fixedly connected to it. A plurality of soft bristles are provided at one end of the dust removal disc. The plurality of soft bristles are separated from or in contact with the filter screen.

[0011] According to the above-mentioned combined battery PACK housing, liquid pump 1 and liquid pump 2 are fixedly connected to the inner walls of both sides of the bottom housing, respectively. The output end of liquid pump 1 and the input end of liquid pump 2 are both fixedly connected to the connecting pipe 1. One end of each connecting pipe 1 is fixedly connected to the flexible hose 1. Multiple mounting plates 1 are arranged in a ring array inside the inner housing. Two circular tubes are slidably connected inside the multiple mounting plates 1. The two circular tubes are connected to each other through the flexible hose 1. The output end of liquid pump 2 and the input end of liquid pump 1 are both fixedly connected to the arc-shaped connecting pipe. A coolant tank is fixedly installed inside the bottom housing. Both arc-shaped connecting pipes are fixedly connected to the coolant tank. A semiconductor refrigeration chip is embedded on one side of the coolant tank, and the cooling surface of the semiconductor refrigeration chip is located inside the coolant tank.

[0012] According to the above-mentioned combined battery PACK housing, an installation groove is provided inside one of the mounting plates, and a mounting plate seven is fixedly connected inside the mounting groove. A motor is fixedly installed at the bottom of the mounting plate seven, and a bidirectional lead screw is rotatably connected to the top of the mounting plate seven. Two sliders are fitted on the outside of the bidirectional lead screw for matching use. The two sliders are located on the outside of two circular tubes and are fixedly connected to them. The output end of the motor passes through the mounting plate seven and is fixedly connected to the bidirectional lead screw.

[0013] According to the above-mentioned combined battery PACK box, a second fan is installed inside the central circular box, multiple heat dissipation holes are opened on the outside of the central circular box, and a third heat dissipation groove matching the number of battery cells is opened inside the partition plate.

[0014] According to the above-mentioned combined battery PACK housing, the first motor, stepper motor, infrared temperature sensor, first fan, first electric telescopic rod, second fan, first liquid pump, second liquid pump, semiconductor refrigeration chip, second electric telescopic rod, and third electric telescopic rod are all electrically connected to the controller.

[0015] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0016] 1. Through the set fixed-point heat dissipation component, when one of the multiple battery cells exceeds 30°C, and the temperatures of the other battery cells are within the suitable operating temperature range, the output end of the electric telescopic rod moves and drives the slider to move, which reduces the resistance in the adjustment circuit and increases the power of the fan (the rotation frequency becomes faster). During the movement of the output end of the electric telescopic rod, the connecting rod five will be driven to move in the same direction as the output end of the electric telescopic rod, thereby releasing the rubber ring and rubber block from contact. The connecting ring and connecting plate two will not rotate with the shaft, thus completing the fixed-point forced heat dissipation of individual battery cells, i.e., solving the problem of local overheating. The extension length of the electric telescopic rod is proportional to the difference between the measured temperature and the optimal operating temperature (i.e., the power of the fan).

[0017] 2. Through the set adjustment components, when the surface temperature of the battery cell body is between 30-35℃, the electric telescopic rod 2 drives the rack 1 to move along the direction of the guide rail. During the movement of the rack 1, it will mesh with the gear 1, thereby driving the gear 1 to rotate. The meshing relationship between the gear 1 and the gear ring 1 drives the outer casing to rotate on the outside of the inner casing, thereby adjusting the overlap between the heat dissipation slot 2 and the heat dissipation slot 1, so as to control the airflow per unit time, facilitate the control of the temperature inside the inner casing, and thus improve the heat dissipation effect.

[0018] 3. With the dust removal components in place, when the surface temperature of the battery cell reaches 40℃, the second motor drives the rotating shaft to rotate, and the rotating shaft drives the second connecting rod outside it to rotate as well. When the second connecting rod rotates, the first connecting rod rotates as well, and the gear second set on the outside of the first connecting rod meshes with the gear ring second. While the first connecting rod revolves with the rotating shaft, it also rotates on its own axis. The dust removal disc and soft brush set at its bottom rotate accordingly, thereby removing the dust attached to the filter screen, thus ensuring ventilation and improving heat dissipation performance.

[0019] 4. When the surface temperature of the battery cell is between 35 and 40°C, the coolant inside the coolant tank is drawn out by the input end of the liquid pump and the arc-shaped connecting pipe. Then, the coolant is delivered to the inside of the hose through the connecting pipe at the output end of the liquid pump, and then delivered to the inside of the circular tube by the hose. The two circular tubes are moved to the height matching the heat dissipation slots 1 and 2 by the cooperation of the motor, the double-acting lead screw and the slider (the cross-sectional width in the slot is proportional to the temperature), thereby further improving the heat dissipation effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a bottom view of the present invention;

[0023] Figure 3 This is a partial assembly drawing of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the inner box of the present invention;

[0025] Figure 5 This is a cross-sectional view of the inner casing of the present invention;

[0026] Figure 6 This is a sectional view of the bottom box of the present invention;

[0027] Figure 7 This is a cross-sectional view of the mounting disc of the present invention;

[0028] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0029] Attached reference numerals: 1. Inner casing; 2. Outer casing; 3. Top cover; 5. Bottom casing; 6. Central circular casing; 7. Divider plate; 11. Heat dissipation slot one; 12. Mounting plate one; 13. Battery cell body; 14. Motor one; 15. Bidirectional lead screw; 16. Slider one; 17. Circular tube; 18. Flexible hose one; 19. Connecting pipe one; 21. Heat dissipation slot two; 22. Gear ring one; 51. Mounting plate; 52. Stepper motor; 53. Shaft; 54. Connecting plate one; 55. Infrared temperature sensor; 56. Rubber ring; 57. Rubber block; 61. Heat dissipation hole; 71. Heat dissipation slot three; 101. Air... 102. Electric telescopic rod 1; 103. Fixed shell; 105. Connecting plate 2; 106. Connecting ring; 109. Connecting rod 5; 112. Fan 2; 191. Liquid pump 1; 193. Liquid pump 2; 195. Arc-shaped connecting pipe; 196. Coolant tank; 197. Semiconductor refrigeration chip; 512. Electric telescopic rod 2; 513. Rack 1; 514. Guide rail; 515. Gear 1; 516. Gear ring 2; 517. Filter screen; 518. Gear 2; 519. Connecting rod 1; 520. Dust collection tray; 521. Connecting rod 2; 522. Electric telescopic rod 3. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] The present invention will be further described below with reference to embodiments.

[0032] Example: Refer to Figures 1 to 8 A modular battery pack enclosure includes an inner enclosure 1, an outer enclosure 2, a top cover 3, and a bottom enclosure 5. The inner enclosure 1 is located on top of the bottom enclosure 5 and is fixedly connected to it. The top cover 3 is located on top of the inner enclosure 1 and is detachably connected to it. The outer enclosure 2 is located on the outside of the inner enclosure 1 and is rotatably connected to it. A central circular box 6 is fixedly connected to the center of the inner enclosure 1. A fixed-point heat dissipation component is provided inside the bottom enclosure 5. Heat dissipation slots 11 are arranged in a ring array on the outside of the inner enclosure 1.

[0033] The fixed-point heat dissipation assembly includes a stepper-driven rotating shaft 53, a second connecting plate 105, a connecting ring 106, and an electric telescopic rod 102. A fan 101 is mounted on the top of the second connecting plate 105. The connecting ring 106 is located inside the base box 5 and rotatably connected to it. The rotating shaft 53 is located inside the base box 5 and rotatably connected to it. The second connecting plate 105 is located on one side of the connecting ring 106 and fixedly connected to it. The electric telescopic rod 102 is fixedly connected to the second connecting plate 105. A fixed housing 103 is fixedly connected to the top of the second connecting plate 105. A sliding resistor rod is located inside the fixed housing 103. The body of the sliding resistor rod slides in contact with a sliding plate fixedly connected to the output end of the electric telescopic rod 102. The fan 101, the sliding resistor rod, and the sliding plate are electrically connected to a DC power supply to form an adjustment circuit. During the sliding motion of the sliding resistor rod towards the fan 101, the effective resistance of the sliding resistor rod and the slider in the adjustment circuit decreases. A connecting rod 109 is fixedly connected to the outer side of the output end of the electric telescopic rod 102. A rubber block 57 is fixedly connected to one end of the connecting rod 109. A rubber ring 56 is fixedly connected to the outer side of the rotating shaft 53. The rubber ring 56 and the rubber block 57 are engaged or separated. Two connecting plates 54 are fixedly connected to the outer side of the connecting ring 106. An infrared temperature sensor 55 is provided on the top of each of the two connecting plates 54. The measuring point is on the side of the battery cell body 13. A controller and an external temperature sensor are respectively provided inside and outside the inner casing 1. The fixed-point heat dissipation component can provide fixed-point heat dissipation for the battery cell body 13 that has abnormal temperature, thereby ensuring the normal operation of the present invention.

[0034] Multiple battery cell bodies 13 are provided with tabs at the bottom. A partition plate 7 is fixedly connected to the top of the bottom box 5. The tabs are snapped into the partition plate 7. An adjustment component and a dust removal component are provided at the bottom of the bottom box 5. A second heat dissipation slot 21 is opened at the corresponding position on the outer side of the outer box 2. The second heat dissipation slot 21 is offset from the first heat dissipation slot 11 and is connected. A toothed ring 22 is fixedly connected to the bottom of the outer box 2.

[0035] The adjustment assembly includes a gear 515, an electric telescopic rod 512, a rack 513, and a guide rail 514. The electric telescopic rod 512 is located at the bottom of the base box 5 and is fixedly connected to it. The rack 513 is fixedly connected to the output end of the electric telescopic rod 512. The guide rail 514 is located at the bottom of the base box 5 and is fixedly connected to it. The rack 513 is located on the outside of the guide rail 514 and is slidably connected to it. The gear 515 is located at the bottom of the base box 5 and is rotatably connected to it. Different positions on the periphery of the gear 515 simultaneously mesh with the gear ring 22 and the rack 513. The adjustment assembly can adjust the misalignment of the heat dissipation slot 11 and the heat dissipation slot 21, thereby improving the heat dissipation effect.

[0036] A filter screen 517 is embedded in the bottom of the base box 5. The dust removal assembly includes a mounting plate 51, a connecting rod 519, a dust removal disc 520, a gear 518, and a connecting rod 521. The mounting plate 51 is located at the bottom of the base box 5 and is fixedly connected to it. A stepper motor 52 is fixedly connected to the bottom of the mounting plate 51. The output end of the stepper motor 52 passes through the mounting plate 51 and is fixedly connected to the rotating shaft 53. A gear ring 516 is fixedly connected to one end of the mounting plate 51 and located outside the rotating shaft 53. The connecting rod 521 is located outside the gear ring 516 and is fixedly connected to it. The connecting rod 519 is located at the bottom end of the mounting plate 51 and is fixedly connected to it. The connecting rod 519 passes through and is rotatably connected to the connecting rod 521. One end of the connecting rod 521 is rotatably connected to the electric telescopic rod 522. The gear 518 is located outside the connecting rod 519 and is fixedly connected to it. The output end of the electric telescopic rod 522 is rotatably connected to the gear 518. The dust collection disc 520 is located at one end of the connecting rod 519 and is fixedly connected to it. One end of the dust collection disc 520 is provided with multiple soft bristles. The multiple soft bristles are separated from or in contact with the filter screen 517. The dust collection components can further improve the air circulation speed and thus further improve the heat dissipation effect.

[0037] Liquid pump 191 and liquid pump 293 are fixedly connected to the inner walls of both sides of the bottom box 5. The output end of liquid pump 191 and the input end of liquid pump 293 are both fixedly connected to the connecting pipe 19. One end of each connecting pipe 19 is fixedly connected to the flexible hose 18. There are multiple mounting plates 12 arranged in a ring inside the inner box 1. Two circular tubes 17 are slidably connected inside the multiple mounting plates 12. The two circular tubes 17 are connected to each other through the flexible hose 18. The output end of liquid pump 293 and the input end of liquid pump 191 are both fixedly connected to the arc-shaped connecting pipe 195. A coolant tank 196 is fixedly installed inside the bottom box 5. The two arc-shaped connecting pipes 195 are fixedly connected to the coolant tank 196. A semiconductor cooling chip 197 is embedded on one side of the coolant tank 196, and the cooling surface of the semiconductor cooling chip 197 is located inside the coolant tank 196. Through the cooperation of the liquid pump 191 and liquid pump 293, the coolant can circulate, thereby further improving the heat dissipation effect.

[0038] One of the mounting plates 12 has a mounting groove inside, and a mounting plate 7 is fixedly connected inside the mounting groove. A motor 14 is fixedly mounted on the bottom of the mounting plate 7, and a double-acting lead screw 15 is rotatably connected to the top of the mounting plate 7. Two matching sliders 16 are sleeved on the outside of the double-acting lead screw 15. The two sliders 16 are located on the outside of the two circular tubes 17 and fixedly connected to them. The output end of the motor 14 passes through the mounting plate 7 and is fixedly connected to the double-acting lead screw 15. Through the cooperation of the motor 14, the double-acting lead screw 15, and the sliders 16, the height of the circular tubes 17 can be adjusted. The central circular box 6 has a... Fan 2 112, multiple heat dissipation holes 61 are opened on the outer side of the central circular box 6, and heat dissipation slots 3 71 matching the number of battery cell bodies 13 are opened inside the partition plate 7. The heat dissipation slots 3 71 can further improve the heat dissipation effect. Motor 1 14, stepper motor 52, infrared temperature sensor 55, fan 1 101, electric telescopic rod 1 102, fan 2 112, liquid pump 1 191, liquid pump 2 193, semiconductor refrigeration chip 197, electric telescopic rod 2 512 and electric telescopic rod 3 522 are all electrically connected to the controller. By electrically connecting the above components to the controller, the normal operation of the present invention is facilitated.

[0039] The working principle of this invention is as follows:

[0040] The controller controls the operation of corresponding components. The suitable operating temperature range for the battery cell body 13 is 20-30℃. Within this temperature range, the airflow enters from the second heat dissipation slot 21 and then enters the interior of the inner casing 1 through the first heat dissipation slot 11. It then flows out through the filter screen 517. The ambient temperature and the outer surface temperature of the battery cell body 13 are detected by an external temperature sensor and an internal infrared temperature sensor 55, respectively. The stepper motor 52 drives the rotating shaft 53 to rotate in steps. During the rotation of the rotating shaft 53, the rubber ring 56 and the rubber block 5 on its outer side are connected. 7. Under the action of friction, the connecting ring 106 is driven to rotate, and the two infrared temperature sensors 55 are used to improve the accuracy of detection. The temperature of multiple battery cell bodies 13 is detected in a step-by-step manner. When the temperature is between 20 and 30°C, the present invention operates the second fan 112, thereby dissipating heat from the battery cell bodies 13 inside the inner box 1 through the cooperation between the filter screen 517 and the heat dissipation hole 61. The connecting plate 105 is driven to rotate through the rotating shaft 53, and the first fan 101 is used to assist in heat dissipation.

[0041] When the surface temperature of the battery cell body 13 is between 30 and 35°C, the controller drives the electric telescopic rod 2 512 to operate. The output end of the electric telescopic rod 2 512 drives the rack 1 513 to move along the guide rail 514. Through the meshing of the rack 1 513 and the gear 1 515, the gear ring 1 22 and the outer casing 2 are driven to rotate, so that the heat dissipation slot 2 21 coincides with the heat dissipation slot 1 11. Within this temperature range, the air circulation speed inside the inner casing 1 is accelerated (the extension length of the electric telescopic rod 2 512 is proportional to the temperature).

[0042] When the surface temperature of the cell body 13 is between 35 and 40°C, based on the above, the coolant inside the coolant tank 196 is extracted through the cooperation of the input end of the liquid pump 191 and the arc-shaped connecting pipe 195. Then, the coolant is delivered to the inside of the hose 18 through the connecting pipe 19 at the output end of the liquid pump 191, and then delivered to the inside of the circular pipe 17 through the hose 18. The heat dissipation tank 21 and the heat dissipation tank 11 are kept in a state of complete communication. The coolant is used to cool the surrounding air, and the cooled air is used to further dissipate heat from the cell body 13, thereby ensuring the heat dissipation effect of the cell body 13, while ensuring that the airflow through the heat dissipation tank 21 and the heat dissipation tank 11 is not affected.

[0043] When the surface temperature of the battery cell body 13 exceeds 40°C, based on the above measures, the motor 14 drives the bidirectional lead screw 15 to rotate, and the bidirectional lead screw 15 drives the two sliders 16 to move relative to each other, and thus drives the circular tube 17 to move, thereby adjusting the height of the circular tube 17 to the same height as the heat dissipation slot 11 and the heat dissipation slot 21, further accelerating the cooling of the air flowing into the inner casing 1 from the mounting plate 12, and further improving the heat dissipation effect on the battery cell body 13.

[0044] Based on this, when the surface temperature of the battery cell body 13 does not reach 40°C, the battery cell body 13 can be sufficiently cooled by the combination of liquid cooling and air cooling. However, when the temperature exceeds 40°C, it is necessary to further ensure air circulation, which requires cleaning the dust attached to the filter screen 517. During cleaning, the electric telescopic rod 3 522 moves the gear 2 518 so that the gear 2 518 and the gear ring 2 516 are engaged (before this, the gear 2 518 and the gear ring 2 516 are not in an engaged state). Subsequently, the stepper motor 52 The drive shaft 53 rotates, and the connecting rod 521 outside the shaft 53 rotates accordingly. When the connecting rod 521 rotates, the connecting rod 519 rotates accordingly. The connecting rod 519 can mesh with the gear ring 516 through the gear 518 set on the outside of the connecting rod 519. While the connecting rod 519 revolves around the shaft 53, it also rotates on its own axis. The dust removal disc 520 and soft brush set at its bottom rotate accordingly, thereby removing the dust attached to the filter screen 517, thus ensuring ventilation and further improving heat dissipation performance.

[0045] When the infrared temperature sensor 55 detects that one of the multiple battery cell bodies 13 exceeds 30°C, while the temperatures of the other battery cell bodies 13 are within their suitable operating temperature range, localized overheating occurs on the surface. To address this, the output end of the electric telescopic rod 102 is moved, causing the sliding plate to move. This reduces the effective resistance in the regulating circuit and increases the operating power of the fan 101. During the movement of the output end of the electric telescopic rod 102, the connecting rod 109 moves in the same direction as the output end of the electric telescopic rod 102, thus releasing the rubber ring 56 and rubber block 57 from contact. The connecting ring 106 and connecting plate 105 no longer rotate with the shaft 53. The system achieves targeted forced heat dissipation for individual battery cell bodies 13, thus solving the problem of local overheating. The extension length of the electric telescopic rod 102 is proportional to the difference between the measured temperature and the optimal operating temperature (i.e., the power of the fan 101). When the temperature of the battery cell body 13 undergoing targeted heat dissipation drops to 20-30°C, the targeted heat dissipation process is stopped. When the temperature is below 20°C, the controller drives the components to operate, causing the heat dissipation slots 11 and 21 to be misaligned. The electric telescopic rod 102, fan 112, liquid pump 191, and liquid pump 193 stop operating, and the invention is in a closed state, thereby providing heat preservation for the battery cell bodies 13 installed inside the inner casing 1.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined battery pack housing, comprising multiple ring-arrayed cell bodies (13), characterized in that, The device includes an inner box (1), an outer box (2), a top cover (3), and a bottom box (5). The inner box (1) is located on top of the bottom box (5) and is fixedly connected to it. The top cover (3) is located on top of the inner box (1) and is detachably connected to it. The outer box (2) is located on the outside of the inner box (1) and is rotatably connected to it. A central circular box (6) is fixedly connected to the center of the inner box (1). A fixed-point heat dissipation component is provided inside the bottom box (5). A heat dissipation groove (11) is opened in a ring array on the outside of the inner box (1). The fixed-point heat dissipation assembly includes a rotating shaft (53), a second connecting plate (105), a connecting ring (106), and an electric telescopic rod (102). A fan (101) is installed on the top of the second connecting plate (105). The connecting ring (106) is located inside the base box (5) and rotatably connected to it. The rotating shaft (53) is located inside the base box (5) and rotatably connected to it. The second connecting plate (105) is located on one side of the connecting ring (106) and fixedly connected to it. The electric telescopic rod (102) is fixedly connected to the second connecting plate (105). A fixed shell (103) is fixedly connected to the top of the second connecting plate (105). A sliding resistor rod is installed inside the fixed shell (103). The rod body of the sliding resistor rod slides in contact with a sliding piece fixedly connected to the output end of the electric telescopic rod (102). When the sliding piece moves along the sliding resistor rod towards the fan (101), the fan (102) moves towards the fan (102). 1) During the directional sliding process, the effective resistance of the sliding resistor rod and the slider in the adjustment circuit decreases. The fan (101), the sliding resistor rod and the slider are electrically connected to a straight current and form an adjustment circuit. The output end of the electric telescopic rod (102) is fixedly connected to the connecting rod five (109). One end of the connecting rod five (109) is fixedly connected to a rubber block (57). The outer side of the rotating shaft (53) is fixedly connected to a rubber ring (56). The rubber ring (56) is engaged or separated from the rubber block (57). The outer side of the connecting ring (106) is fixedly connected to two connecting plates (54). The top of the two connecting plates (54) is provided with an infrared temperature sensor (55). The infrared temperature sensor (55) measures on the side of the battery cell body (13). The inner box (1) is provided with a controller and an external temperature sensor inside and outside, respectively. The bottom of the base box (5) is fitted with a filter screen (517). The dust removal assembly includes a mounting plate (51), a connecting rod (519), a dust removal plate (520), a gear (518), and a connecting rod (521). The mounting plate (51) is located at the bottom of the base box (5) and is fixedly connected to it. A stepper motor (52) is fixedly connected to the bottom of the mounting plate (51). The output end of the stepper motor (52) passes through the mounting plate (51) and is fixedly connected to the rotating shaft (53). A gear ring (516) is fixedly connected to one end of the mounting plate (51) and outside the rotating shaft (53). The connecting rod (521) is located outside the gear ring (516) and is fixedly connected to it. The first connecting rod (519) is located at the bottom end of the mounting plate (51) and is rotatably connected to it. The first connecting rod (519) passes through the second connecting rod (521) and is rotatably connected to it. One end of the second connecting rod (521) is rotatably connected to the third electric telescopic rod (522). The second gear (518) is located outside the first connecting rod (519) and is fixedly connected to it. The output end of the third electric telescopic rod (522) is rotatably connected to the second gear (518). The dust removal disc (520) is located at one end of the first connecting rod (519) and is fixedly connected to it. One end of the dust removal disc (520) is provided with multiple soft bristles. The multiple soft bristles are separated from or in contact with the filter screen (517).

2. The combined battery pack housing according to claim 1, characterized in that, Each of the multiple battery cell bodies (13) has a tab at its bottom. A partition plate (7) is fixedly connected to the top of the inner part of the bottom box (5). The tabs are snapped into the partition plate (7). An adjustment assembly and a dust removal assembly are provided at the bottom of the bottom box (5). A second heat dissipation groove (21) is opened at the corresponding position on the outer side of the outer box (2). The second heat dissipation groove (21) is offset from the first heat dissipation groove (11) and is connected. A gear ring (22) is fixedly connected to the bottom of the outer box (2). The adjustment assembly includes a gear (515), an electric telescopic rod (512), and a rack (513). The electric telescopic rod 2 (512) is located at the bottom of the base box (5) and is fixedly connected to it. The rack 1 (513) is fixedly connected to the output end of the electric telescopic rod 2 (512). The guide rail (514) is located at the bottom of the base box (5) and is fixedly connected to it. The rack 1 (513) is located on the outside of the guide rail (514) and is slidably connected to it. The gear 1 (515) is located at the bottom of the base box (5) and is rotatably connected to it. The gear 1 (515) is simultaneously meshed with the gear ring 1 (22) and the rack 1 (513) at different positions on its periphery.

3. The combined battery pack housing according to claim 1, characterized in that, The inner walls of the two sides of the bottom box (5) are respectively fixedly connected to a liquid pump one (191) and a liquid pump two (193). The output end of the liquid pump one (191) and the input end of the liquid pump two (193) are both fixedly connected to a connecting pipe one (19). One end of each connecting pipe one (19) is fixedly connected to a flexible hose one (18). The inner box (1) has a ring array of multiple mounting plates one (12). The interior of the multiple mounting plates one (12) has two circular tubes (17) slidably connected. The two circular tubes (17) The two pumps are connected to each other by a hose (18). The output end of the second pump (193) and the input end of the first pump (191) are both fixedly connected by an arc-shaped connecting pipe (195). A coolant tank (196) is fixedly installed inside the bottom box (5). Both arc-shaped connecting pipes (195) are fixedly connected to the coolant tank (196). A semiconductor refrigeration chip (197) is embedded on one side of the coolant tank (196), and the cooling surface of the semiconductor refrigeration chip (197) is located inside the coolant tank (196).

4. The combined battery pack housing according to claim 1, characterized in that, One of the mounting plates (12) has an internal mounting groove, and a mounting plate (7) is fixedly connected inside the mounting groove. A motor (14) is fixedly installed at the bottom of the mounting plate (7), and a bidirectional lead screw (15) is rotatably connected to the top of the mounting plate (7). Two sliders (16) are fitted on the outside of the bidirectional lead screw (15) for matching use. The two sliders (16) are located on the outside of the two circular tubes (17) and fixedly connected to them. The output end of the motor (14) passes through the mounting plate (7) and is fixedly connected to the bidirectional lead screw (15).

5. A combined battery pack housing according to claim 2, characterized in that, The central round box (6) is equipped with a second fan (112), and the outer side of the central round box (6) is provided with multiple heat dissipation holes (61). The partition plate (7) is provided with a third heat dissipation groove (71) matching the number of battery cell bodies (13).

6. A combined battery pack housing according to claim 1, characterized in that, It also includes motor one (14), fan two (112), liquid pump one (191), liquid pump two (193), semiconductor refrigeration chip (197), and electric telescopic rod two (512). The motor one (14), stepper motor (52), infrared temperature sensor (55), fan one (101), electric telescopic rod one (102), fan two (112), liquid pump one (191), liquid pump two (193), semiconductor refrigeration chip (197), electric telescopic rod two (512) and electric telescopic rod three (522) are all electrically connected to the controller.

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