Combined battery PACK box body

Abstract

The invention relates to the technical field of battery cooling, in particular to a combined battery PACK box 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 fixedly connected with the bottom box, the top cover is located at the top of the inner box body and detachably connected with the inner box body, and the outer box body is located on the outer side of the inner box body and rotationally connected with the inner box body. Through the arranged fixed-point heat dissipation assembly, a fifth connecting rod can be driven to move in the moving direction of the output end of a first electric telescopic rod in the moving process of the output end of the first electric telescopic rod, so that the contact state of a rubber ring and a rubber block is relieved, and the connecting ring and a second connecting plate do not rotate along with a rotating shaft; therefore, fixed-point forced heat dissipation of individual battery cell bodies is completed, the problem of local overheating is solved, and the extension length of the first electric telescopic rod is in direct proportion to the difference between the measured temperature and the optimal working temperature (namely the power of the first fan).

Description

Technical Field

[0001] The present invention relates to the technical field of battery cooling, and in particular to a combined battery PACK box. Background Art

[0002] As the electric vehicle market continues to expand, higher requirements are placed on the performance, safety and reliability of power batteries. As a key component that accommodates and protects the battery pack, the design and technical level of the PACK battery box directly affect the performance of the entire battery system. With the continuous advancement of battery technology, the energy density of batteries is gradually increasing, which requires the PACK battery box to better adapt to the heat dissipation needs of high-energy-density batteries. If the heat dissipation is poor, the battery temperature may be too high, affecting the performance and life of the battery, and even causing safety accidents.

[0003] A combined battery PACK box is proposed in the Chinese invention patent with application number 202310664053.2. However, when multiple cells are operating at the same time, even cells produced in the same batch may have slight differences in the performance of raw materials such as positive and negative electrode materials and electrolytes. For example, some cells have poor conductivity of positive electrode materials, and have high resistance during the charging and discharging process, which will generate more heat; or the ionic conductivity of the electrolyte is low, which affects the ion transmission efficiency inside the cell, resulting in differences in the local heat accumulation temperature, that is, the problem of local overheating, and the existing technology lacks measures to deal with local 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 box, which can effectively solve the problem of local overheating in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a combined battery PACK box, comprising an inner box, an outer box, a top cover and a bottom box, wherein the inner box is located at the top of the bottom box and is fixedly connected thereto, the top cover is located at the top of the inner box and is detachably connected thereto, the outer box is located outside the inner box and is rotatably connected thereto, a central circular box is fixedly connected to the inner center of the inner box, a fixed-point heat dissipation component is arranged inside the bottom box, and a heat dissipation slot is provided in a circular array on the outer side of the inner box; The fixed-point heat dissipation component includes a step-driven rotating shaft, a second connecting plate, a connecting ring and an electric telescopic rod. A fan is arranged on the top of the second connecting plate. The connecting ring is located inside the bottom box and is rotatably connected thereto. The rotating shaft is located inside the bottom box and is rotatably connected thereto. The second connecting plate is located on one side of the connecting ring and is fixedly connected thereto. The electric telescopic rod is fixedly connected to the second connecting plate. A fixed shell is fixedly connected to the top of the second connecting plate. A sliding resistance rod is arranged inside the fixed shell. The rod body of the sliding resistance rod is in sliding contact with a sliding piece fixedly connected to the output end of the electric telescopic rod. The fan, the sliding resistance rod and the sliding piece are electrically connected. A DC power supply is provided to form a regulating circuit. When the sliding piece moves along the sliding resistance rod and slides toward the direction of the fan, the effective resistance of the sliding resistance rod and the sliding piece in the regulating circuit decreases. A connecting rod five is fixedly connected to the outside 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 outside of the rotating shaft. The rubber ring is engaged with or separated from the rubber block. Two connecting plates one are fixedly connected to the outside of the connecting ring. Infrared temperature sensors are arranged on the tops of the two connecting plates one. The measuring points are on the sides of the battery body. A controller and an external temperature sensor are respectively arranged inside and outside the inner box.

[0006] According to the above-mentioned combined battery PACK box, the bottoms of the plurality of battery cell bodies are all provided with pole ears, the inner top of the bottom box is fixedly connected with a partition plate, the pole ears are clamped with 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 staggered and communicated with the first heat dissipation groove, and the bottom of the outer box is fixedly connected with a first gear ring; The adjustment assembly includes a gear 1, an electric telescopic rod 2, a rack 1 and a guide rail. The electric telescopic rod 2 is located at the bottom of the bottom box and fixedly connected thereto, the rack 1 is fixedly connected to the output end of the electric telescopic rod 2, the guide rail is located at the bottom of the bottom box and fixedly connected thereto, the rack 1 is located on the outside of the guide rail and is slidably connected thereto, the gear 1 is located at the bottom of the bottom box and is rotatably connected thereto, and different positions on one side of the gear are simultaneously meshed with the ring gear 1 and the rack 1.

[0007] According to the above-mentioned combined battery PACK box, a filter is embedded in the bottom of the bottom box, and the dust removal assembly includes a mounting plate, a connecting rod 1, a dust removal plate, a gear 2 and a connecting rod 2. The mounting plate is located at the bottom of the bottom box and is fixedly connected thereto. A stepper motor is fixedly connected to the bottom of the mounting plate, and the output end of the stepper motor passes through the mounting plate and is fixedly connected to the rotating shaft. One end of the mounting plate and is located on the outside of the rotating shaft and is fixedly connected with a gear ring 2. The connecting rod 2 is located on the outside of the gear ring 2 and is fixedly connected thereto. The connecting rod 1 is located at the bottom end of the mounting plate and is rotatably connected thereto. The connecting rod 1 passes through the connecting rod 2 and is rotatably connected thereto. One end of the connecting rod 2 is rotatably connected to an electric telescopic rod 3. The gear 2 is located on the outside of the connecting rod 1 and is fixedly connected thereto. The output end of the electric telescopic rod 3 is rotatably connected to the gear 2. The dust removal plate is located at one end of the connecting rod 1 and is fixedly connected thereto. One end of the dust removal plate is provided with a plurality of soft bristles, and the plurality of soft bristles are separated from or in contact with the filter.

[0008] According to the above-mentioned combined battery PACK box, the inner walls on both sides of the bottom box are fixedly connected with a liquid pump 1 and a liquid pump 2 respectively, the output end of the liquid pump 1 and the input end of the liquid pump 2 are fixedly connected with a connecting pipe 1, and one end of each connecting pipe 1 is fixedly connected with a hose 1, the internal annular array of the inner box body has a plurality of mounting plates 1, and the interior of the plurality of mounting plates 1 is slidably connected with two circular tubes, and the two circular tubes are interconnected through a hose 1, the output end of the liquid pump 2 and the input end of the liquid pump 1 are fixedly connected with an arc-shaped connecting pipe, a coolant tank is fixedly installed inside the bottom box, and the two arc-shaped connecting pipes are fixedly connected to the coolant tank, a semiconductor refrigeration plate is embedded on one side of the coolant tank, and the cooling surface of the semiconductor refrigeration plate is located inside the coolant tank.

[0009] According to the above-mentioned combined battery PACK box, a mounting groove is opened inside one of the mounting plates 1, a mounting plate 7 is fixedly connected inside the mounting groove, a motor 1 is fixedly installed on the bottom of the mounting plate 7, a bidirectional screw rod is rotatably connected to the top of the mounting plate 7, two sliders 1 are sleeved on the outer side of the bidirectional screw rod for matching use, the two sliders 1 are respectively located on the outer sides of two circular tubes and fixedly connected thereto, and the output end of the motor 1 passes through the mounting plate 7 and is fixedly connected to the bidirectional screw rod.

[0010] According to the above-mentioned combined battery PACK box, a second fan is arranged inside the central circular box, a plurality of heat dissipation holes are opened on the outer side of the central circular box, and a third heat dissipation slot matching the number of battery cells is opened inside the partition plate.

[0011] According to the above-mentioned combined battery PACK box, the motor 1, stepper motor, infrared temperature sensor, fan 1, electric telescopic rod 1, fan 2, liquid pump 1, liquid pump 2, semiconductor cooling plate, electric telescopic rod 2 and electric telescopic rod 3 are all electrically connected to the controller.

[0012] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. Through the set fixed-point heat dissipation component, when one of the multiple battery cells exceeds 30°C and the temperature of the other battery cells is in a suitable working temperature range, the output end of the electric telescopic rod 1 moves and drives the slider to move, so that the resistance in the adjustment circuit is reduced and the power of the fan 1 is increased (the rotation frequency becomes faster). In the process of the movement of the output end of the electric telescopic rod 1, the connecting rod 5 will be driven to move along with the moving direction of the output end of the electric telescopic rod 1, so that the rubber ring and the rubber block are released from contact, and the connecting ring and the connecting plate 2 do not rotate with the rotating shaft, thereby completing the fixed-point forced heat dissipation of individual battery cells, that is, solving the problem of local overheating, and the extension length of the electric telescopic rod 1 is proportional to the difference between the measured temperature and the optimal working temperature (that is, the power of the fan 1).

[0013] 2. By setting the adjustment component, when the surface temperature of the battery body is between 30-35℃, the electric telescopic rod 2 is used to drive 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 operate, and the meshing relationship between the gear 1 and the gear ring 1 is used to drive the outer box to rotate on the outside of the inner box, thereby adjusting the overlap between the heat dissipation slot 2 and the heat dissipation slot 1, so as to control the air flow per unit time, facilitate control of the temperature inside the inner box, and thus improve the heat dissipation effect.

[0014] 3. Through the dust removal component, when the surface temperature of the battery cell body reaches 40°C, the motor 2 is used to drive the rotating shaft to rotate, and the rotating shaft is used to drive the connecting rod 2 outside it to rotate accordingly. When the connecting rod 2 rotates, the connecting rod 1 also rotates, and can mesh with the gear ring 2 through the gear 2 arranged on the outside of the connecting rod 1. When the connecting rod 1 revolves with the rotating shaft, it rotates on its own, and the dust removal plate and the soft brush arranged at the bottom thereof rotate accordingly, thereby removing the dust attached to the filter net, thereby ensuring the ventilation effect and improving the heat dissipation performance.

[0015] 4. When the surface temperature of the battery cell body is between 35 and 40°C, the coolant in the coolant tank is extracted by using the cooperation of the input end of the liquid pump 1 and the arc-shaped connecting tube, and then the coolant is transported to the inside of the hose 1 through the connecting tube 1 at the output end of the liquid pump 1, and then transported to the inside of the circular tube by using the hose 1, and the two circular tubes are moved to a height matching the heat dissipation groove 1 and the heat dissipation groove 2 by using the cooperation of the motor 1, the bidirectional screw rod and the slider 1 (the cross-sectional width in the groove is proportional to the temperature), thereby further improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a bottom view of the present invention; Figure 3 It is a partial assembly diagram of the present invention; Figure 4 It is a schematic diagram of the internal structure of the inner box of the present invention; Figure 5 It is a cross-sectional view of the inner box of the present invention; Figure 6 It is a cross-sectional view of the bottom box of the present invention; Figure 7 is a cross-sectional view of the mounting plate of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0018] Figure numerals: 1, inner box; 2, outer box; 3, top cover; 5, bottom box; 6, center round box; 7, partition plate; 11, heat sink 1; 12, mounting plate 1; 13, battery cell body; 14, motor 1; 15, bidirectional screw rod; 16, slider 1; 17, round tube; 18, hose 1; 19, connecting tube 1; 21, heat sink 2; 22, gear ring 1; 51, mounting plate; 52, stepping motor; 53, rotating shaft; 54, connecting plate 1; 55, infrared temperature sensor; 56, rubber ring; 57, rubber block; 61, heat dissipation hole; 71, heat sink 3; 101, fan Machine one; 102, electric telescopic rod one; 103, fixed shell; 105, connecting plate two; 106, connecting ring; 109, connecting rod five; 112, fan two; 191, liquid pump one; 193, liquid pump two; 195, arc-shaped connecting pipe; 196, coolant tank; 197, semiconductor refrigeration plate; 512, electric telescopic rod two; 513, rack one; 514, guide rail; 515, gear one; 516, gear ring two; 517, filter screen; 518, gear two; 519, connecting rod one; 520, dust removal disc; 521, connecting rod two; 522, electric telescopic rod three. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] Example: Refer to Figures 1 to 8 A combined battery PACK box 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 the top of the bottom box 5 and is fixedly connected thereto. The top cover 3 is located on the top of the inner box 1 and is detachably connected thereto. The outer box 2 is located on the outside of the inner box 1 and is rotatably connected thereto. A central circular box 6 is fixedly connected to the inner center of the inner box 1. A fixed-point heat dissipation component is arranged inside the bottom box 5. A heat dissipation slot 11 is provided in a circular array on the outer side of the inner box 1. The fixed-point heat dissipation component includes a step-driven rotating shaft 53, a connecting plate 105, a connecting ring 106 and an electric telescopic rod 102, a fan 101 is arranged on the top of the connecting plate 105, the connecting ring 106 is located inside the bottom box 5 and is rotatably connected thereto, the rotating shaft 53 is located inside the bottom box 5 and is rotatably connected thereto, the connecting plate 105 is located on one side of the connecting ring 106 and is fixedly connected thereto, the electric telescopic rod 102 is fixedly connected to the connecting plate 105, a fixed shell 103 is fixedly connected to the top of the connecting plate 105, a sliding resistance rod is arranged inside the fixed shell 103, a rod body of the sliding resistance rod is in sliding contact with a sliding piece fixedly connected to the output end of the electric telescopic rod 102, the fan 101, the sliding resistance rod and the sliding piece are electrically connected to a DC power supply and form a regulating circuit, and a regulating circuit is formed on the sliding piece. During the sliding process along the sliding resistance rod moving toward the direction of the fan 101, the effective resistance of the sliding resistance rod and the sliding piece in the adjustment circuit decreases, and a connecting rod 5 109 is fixedly connected to the outer side of the output end of the electric telescopic rod 102, and a rubber block 57 is fixedly connected to one end of the connecting rod 5 109, and a rubber ring 56 is fixedly connected to the outer side of the rotating shaft 53, and the rubber ring 56 is engaged or separated from the rubber block 57. Two connecting plates 54 are fixedly connected to the outer side of the connecting ring 106, and infrared temperature sensors 55 are arranged on the tops of the two connecting plates 54, and the measuring point is on the side of the battery cell body 13. The inside and outside of the inner box 1 are respectively provided with a controller and an external temperature sensor, and the fixed-point heat dissipation component can be set to perform fixed-point heat dissipation on the battery cell body 13 with abnormal temperature, thereby ensuring the normal operation of the present invention.

[0022] The bottom of the multiple battery cell bodies 13 are all provided with pole ears, the inner top of the bottom box 5 is fixedly connected with a partition plate 7, the pole ears are clamped with the partition plate 7, the bottom of the bottom box 5 is provided with an adjustment component and a dust removal component, the outer side of the outer box 2 is provided with a heat dissipation groove 21 at a corresponding position, the heat dissipation groove 21 is staggered and communicated with the heat dissipation groove 1 11, and the bottom of the outer box 2 is fixedly connected with a gear ring 1 22; The adjusting component includes a gear 1 515, an electric telescopic rod 2 512, a rack 1 513 and a guide rail 514. The electric telescopic rod 2 512 is located at the bottom of the bottom box 5 and is fixedly connected thereto. 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 bottom box 5 and is fixedly connected thereto. The rack 1 513 is located on the outside of the guide rail 514 and is slidably connected thereto. The gear 1 515 is located at the bottom of the bottom box 5 and is rotatably connected thereto. Different positions on the circumference of the gear 1 515 are meshed with the gear ring 1 22 and the rack 1 513 at the same time. The setting of the adjusting component can adjust the offset position of the heat dissipation slot 1 11 and the heat dissipation slot 2 21, thereby improving the heat dissipation effect.

[0023] A filter screen 517 is embedded at the bottom of the bottom box 5, and the dust removal assembly includes a mounting plate 51, a connecting rod 1 519, a dust removal plate 520, a gear 2 518 and a connecting rod 2 521. The mounting plate 51 is located at the bottom of the bottom box 5 and is fixedly connected thereto. 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. One end of the mounting plate 51 is located on the outside of the rotating shaft 53 and is fixedly connected to the gear ring 2 516. The connecting rod 2 521 is located on the outside of the gear ring 2 516 and is fixedly connected thereto. The connecting rod 1 519 is located at the bottom end of the mounting plate 51 and is fixedly connected to the rotating shaft 53. The connecting rod 1 519 is rotatably connected to the connecting rod 2 521 and is rotatably connected thereto. One end of the connecting rod 2 521 is rotatably connected to the electric telescopic rod 3 522. The gear 2 518 is located on the outside of the connecting rod 1 519 and is fixedly connected thereto. The output end of the electric telescopic rod 3 522 is rotatably connected to the gear 2 518. The dust removal plate 520 is located at one end of the connecting rod 1 519 and is fixedly connected thereto. A plurality of soft bristles are provided at one end of the dust removal plate 520. The plurality of soft bristles are separated from or in contact with the filter 517. The dust removal component provided can further increase the air circulation speed, thereby further improving the heat dissipation effect.

[0024] The inner walls on both sides of the bottom box 5 are fixedly connected with a liquid pump 191 and a liquid pump 2 193 respectively, the output end of the liquid pump 191 and the input end of the liquid pump 2 193 are fixedly connected with a connecting pipe 19, and one end of each connecting pipe 19 is fixedly connected with a hose 18. The internal annular array of the inner box body 1 has multiple mounting plates 12, and the internal sliding connection of the multiple mounting plates 12 is connected with two circular tubes 17, and the two circular tubes 17 are connected to each other through a hose 18. The output end of the liquid pump 2 193 and the input end of the liquid pump 191 are fixedly connected with an arc-shaped connecting pipe 195. A coolant tank 196 is fixedly installed inside the bottom box 5, and the two arc-shaped connecting pipes 195 are fixedly connected to the coolant tank 196. A semiconductor refrigeration plate 197 is embedded on one side of the coolant tank 196, and the cooling surface of the semiconductor refrigeration plate 197 is located inside the coolant tank 196. Through the cooperation of the liquid pump 191 and the liquid pump 2 193, the coolant can be circulated, thereby further improving the heat dissipation effect.

[0025] A mounting groove is provided inside one of the mounting plates 12, 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 screw rod 15 is rotatably connected to the top of the mounting plate 7. Two sliders 16 for matching use are sleeved on the outer side of the bidirectional screw rod 15. The two sliders 16 are respectively located on the outer sides of the two circular tubes 17 and are fixedly connected thereto. The output end of the motor 14 passes through the mounting plate 7 and is fixedly connected to the bidirectional screw rod 15. The height of the circular tube 17 can be adjusted by cooperating with the motor 14, the bidirectional screw rod 15 and the slider 16. The interior of the central circular box 6 is provided with The outer side of the fan 112 and the central circular box 6 are provided with a plurality of heat dissipation holes 61, and the interior of the partition plate 7 is provided with heat dissipation grooves 71 matching the number of the battery cell body 13. The heat dissipation grooves 71 are provided to further improve the heat dissipation effect. The motor 14, the stepper motor 52, the infrared temperature sensor 55, the fan 101, the electric telescopic rod 1 102, the fan 112, the liquid pump 1 191, the liquid pump 2 193, the semiconductor cooling sheet 197, the electric telescopic rod 2 512 and the electric telescopic rod 3 522 are all electrically connected to the controller. By electrically connecting the above-mentioned components to the controller, the normal operation of the present invention is facilitated.

[0026] The working principle of the present invention is as follows: The corresponding components are controlled by the controller to operate. The suitable working temperature range of the battery body 13 is 20-30°C. In this temperature range, the air flows from the heat sink 21, enters the inner box 1 through the heat sink 11, and then flows out through the filter 517. The ambient temperature and the outer surface temperature of the battery body 13 are detected by the external temperature sensor and the internal infrared temperature sensor 55, respectively. The stepper motor 52 drives the shaft 53 to rotate step by step. During the rotation of the shaft 53, the rubber ring 56 and the rubber block 56 are connected to the outer side of the shaft 53. 7 Under the action of friction force, the connecting ring 106 is driven to rotate accordingly, and the two infrared temperature sensors 55 are used to improve the detection accuracy, and the temperature of the plurality of 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, so that the battery cell body 13 inside the inner box 1 is cooled by the cooperation between the filter 517 and the heat dissipation hole 61, and the connecting plate 2 105 can be driven to rotate accordingly through the rotating shaft 53, and the cooling is assisted by the first fan 101; 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, and the output end of the electric telescopic rod 2 512 drives the rack 1 513 to move along the guide rail 514, and drives the gear ring 1 22 and the outer box 2 to operate through the meshing of the rack 1 513 and the gear 1 515, so that the heat dissipation slot 2 21 overlaps with the heat dissipation slot 1 11, and accelerates the air circulation speed inside the inner box 1 within this temperature range (the extension length of the electric telescopic rod 2 512 is proportional to the temperature); When the surface temperature of the battery cell body 13 is between 35 and 40°C, on the basis of the above, the coolant in the coolant tank 196 is extracted through the cooperation between the input end of the liquid pump 191 and the arc-shaped connecting pipe 195, and then the coolant is transported to the inside of the hose 18 through the connecting pipe 19 at the output end of the liquid pump 191, and then the coolant is transported to the inside of the circular tube 17 by the hose 18, so that the heat dissipation slot 21 and the heat dissipation slot 11 are kept in a state of complete communication, and the surrounding air is cooled by the coolant, and the battery cell body 13 is further cooled by the cooled air, so as to ensure the heat dissipation effect of the battery cell body 13, and at the same time ensure that the airflow through the heat dissipation slot 21 and the heat dissipation slot 11 is not affected; When the surface temperature of the battery cell body 13 exceeds 40°C, on the basis of the above measures, the motor 14 is used to drive the bidirectional screw 15 to operate, and the bidirectional screw 15 is used to drive the two sliders 16 to move relative to each other, and then drive the circular tube 17 to move, so that the height of the circular tube 17 is adjusted to the same height as the heat dissipation groove 11 and the heat dissipation groove 21, further accelerating the cooling of the air flowing from the mounting plate 12 into the inner box 1, and further improving the heat dissipation effect of the battery cell body 13; On this basis, when the surface temperature of the battery body 13 does not reach 40°C, the battery body 13 can be fully cooled by the combination of liquid cooling and air cooling. When the temperature exceeds 40°C, it is necessary to further ensure the circulation of air, so that the dust attached to the filter 517 needs to be cleaned. When cleaning, the gear 2 518 is moved by the electric telescopic rod 3 522 so that the gear 2 518 is meshed with the gear ring 2 516 (before this, the gear 2 518 and the gear ring 2 516 are not in meshing state). Then, the stepping motor 52 is used to move the gear 2 518 to mesh with the gear ring 2 516. The drive shaft 53 is driven to rotate, and the second connecting rod 521 outside the shaft 53 is driven to rotate accordingly. When the second connecting rod 521 rotates, the first connecting rod 519 rotates accordingly, and can be meshed with the second gear ring 516 through the second gear 518 arranged on the outside of the first connecting rod 519. When the first connecting rod 519 revolves with the shaft 53, it rotates by itself, and the dust removal plate 520 and the soft brush arranged at the bottom thereof rotate accordingly, thereby removing the dust attached to the filter 517, thereby ensuring the ventilation effect and further improving the heat dissipation performance. When the infrared temperature sensor 55 detects that the temperature of one of the multiple battery cells 13 exceeds 30°C, and the temperature of the other battery cells 13 is within the appropriate working temperature range, local overheating occurs on the surface. When processing, the output end of the electric telescopic rod 102 is moved to drive the sliding piece to move, so that the effective resistance in the adjustment circuit is reduced, and the working power of the fan 101 is increased. In the process of the movement of the output end of the electric telescopic rod 102, the connecting rod 5 109 is driven to move along with the moving direction of the output end of the electric telescopic rod 102, so that the rubber ring 56 and the rubber block 57 are released from the contact state, and the connecting ring 106 and the connecting plate 2 105 do not rotate with the rotating shaft 53. The fixed-point forced heat dissipation of individual battery cell bodies 13 is completed, that is, the problem of local overheating is solved, and the extended length of the electric telescopic rod 102 is proportional to the difference between the measured temperature and the optimal working temperature (that is, the power of the fan 101). When the temperature of the battery cell body 13 for fixed-point heat dissipation drops to 20-30°C, the fixed-point heat dissipation treatment is stopped, and when the temperature is lower than 20°C, the controller drives the components to operate, so that the heat dissipation slot 11 and the heat dissipation slot 21 are in a dislocated state, the electric telescopic rod 102, the fan 2 112, the liquid pump 1 191 and the liquid pump 2 193 stop running, and the present invention is in a closed state, so that the battery cell body 13 arranged inside the inner box 1 is insulated.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements 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 box, a plurality of battery cell bodies (13) in a circular array, characterized in that: The invention comprises an inner box (1), an outer box (2), a top cover (3) and a bottom box (5), wherein the inner box (1) is located on the top of the bottom box (5) and is fixedly connected thereto, the top cover (3) is located on the top of the inner box (1) and is detachably connected thereto, the outer box (2) is located on the outside of the inner box (1) and is rotatably connected thereto, a central circular box (6) is fixedly connected to the center of the inner box (1), a fixed-point heat dissipation component is arranged inside the bottom box (5), and a heat dissipation groove (11) is provided in a circular array on the outside of the inner box (1); The fixed-point heat dissipation component comprises a rotating shaft (53), a second connecting plate (105), a connecting ring (106) and an electric telescopic rod (102); a fan (101) is arranged on the top of the second connecting plate (105); the connecting ring (106) is located inside the bottom box (5) and is rotatably connected thereto; the rotating shaft (53) is located inside the bottom box (5) and is rotatably connected thereto; the second connecting plate (105) is located on one side of the connecting ring (106) and is fixedly connected thereto; 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 resistance rod is arranged inside the fixed shell (103); a rod body of the sliding resistance rod is in sliding contact with a sliding piece fixedly connected to an output end of the electric telescopic rod (102); when the sliding piece moves along the sliding resistance rod toward the fan (102), the fan (101) is moved to the bottom box (102); 1) During the sliding process in the direction, the effective resistance of the sliding resistance rod and the sliding piece in the regulating circuit decreases, the fan 1 (101), the sliding resistance rod and the sliding piece are electrically connected with a straight line current and form a regulating circuit, the output end of the electric telescopic rod 1 (102) is fixedly connected to a connecting rod 5 (109) on the outside, one end of the connecting rod 5 (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 with or separated from the rubber block (57), the outer side of the connecting ring (106) is fixedly connected to two connecting plates 1 (54), the tops of the two connecting plates 1 (54) are each provided with an infrared temperature sensor (55), the measuring point of the infrared temperature sensor (55) is on the side of the battery cell body (13), and the inside and outside of the inner box (1) are respectively provided with a controller and an external temperature sensor.

2. A combined battery PACK box according to claim 1, characterized in that: The bottoms of the plurality of battery cell bodies (13) are all provided with pole ears, the top of the interior of the bottom box (5) is fixedly connected to a partition plate (7), the pole ears are snap-connected to the partition plate (7), the bottom of the bottom box (5) is provided with an adjustment component and a dust removal component, the outer side of the outer box (2) is provided with a second heat dissipation groove (21) at a corresponding position, the second heat dissipation groove (21) is staggered and communicated with the first heat dissipation groove (11), and the bottom of the outer box (2) is fixedly connected to a first gear ring (22); The adjustment assembly comprises a gear 1 (515), an electric telescopic rod 2 (512), a rack 1 (513) and a guide rail (514); the electric telescopic rod 2 (512) is located at the bottom of the bottom box (5) and is fixedly connected thereto; 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 bottom box (5) and is fixedly connected thereto; the rack 1 (513) is located outside the guide rail (514) and is slidably connected thereto; the gear 1 (515) is located at the bottom of the bottom box (5) and is rotatably connected thereto; and different positions on the circumference of the gear 1 (515) are simultaneously meshed with the gear ring 1 (22) and the rack 1 (513).

3. A combined battery PACK box according to claim 2, characterized in that: A filter screen (517) is embedded at the bottom of the bottom box (5); the dust removal assembly comprises a mounting plate (51), a first connecting rod (519), a dust removal plate (520), a second gear (518) and a second connecting rod (521); the mounting plate (51) is located at the bottom of the bottom box (5) and is fixedly connected thereto; a stepper motor (52) is fixedly connected to the bottom of the mounting plate (51); an output end of the stepper motor (52) passes through the mounting plate (51) and is fixedly connected to a rotating shaft (53); a second gear ring (516) is fixedly connected to one end of the mounting plate (51) and is located outside the rotating shaft (53); the second connecting rod (521) is located outside the second gear ring (516) and is fixedly connected thereto. The connecting rod 1 (519) is located at the bottom end of the mounting plate (51) and is rotatably connected thereto. The connecting rod 1 (519) passes through the connecting rod 2 (521) and is rotatably connected thereto. One end of the connecting rod 2 (521) is rotatably connected to the electric telescopic rod 3 (522). The gear 2 (518) is located on the outside of the connecting rod 1 (519) and is fixedly connected thereto. The output end of the electric telescopic rod 3 (522) is rotatably connected to the gear 2 (518). The dust removal plate (520) is located at one end of the connecting rod 1 (519) and is fixedly connected thereto. One end of the dust removal plate (520) is provided with a plurality of soft bristles, and the plurality of soft bristles are separated from or in contact with the filter screen (517).

4. A combined battery PACK box according to claim 3, characterized in that: The inner walls on both sides of the bottom box (5) are respectively fixedly connected to a liquid pump 1 (191) and a liquid pump 2 (193); the output end of the liquid pump 1 (191) and the input end of the liquid pump 2 (193) are both fixedly connected to a connecting pipe 1 (19); one end of each connecting pipe 1 (19) is fixedly connected to a hose 1 (18); the inner annular array of the inner box body (1) has a plurality of mounting plates 1 (12); the interior of the plurality of mounting plates 1 (12) is slidably connected to two circular tubes (17); the two circular tubes (17) are connected to the inner surface of the plurality of mounting plates 1 (12); ) are interconnected via a hose one (18), the output end of the liquid pump two (193) and the input end of the liquid pump one (191) are both fixedly connected with an 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 both fixedly connected with the coolant tank (196), a semiconductor cooling plate (197) is embedded on one side of the coolant tank (196), and the cooling surface of the semiconductor cooling plate (197) is located inside the coolant tank (196).

5. A combined battery PACK box according to claim 4, characterized in that: A mounting groove is provided inside one of the mounting plates (12), a mounting plate (7) is fixedly connected inside the mounting groove, a motor (14) is fixedly installed on the bottom of the mounting plate (7), a bidirectional screw rod (15) is rotatably connected to the top of the mounting plate (7), two sliders (16) for matching use are sleeved on the outer side of the bidirectional screw rod (15), the two sliders (16) are respectively located on the outer sides of two circular tubes (17) and are fixedly connected thereto, and the output end of the motor (14) passes through the mounting plate (7) and is fixedly connected to the bidirectional screw rod (15).

6. A combined battery PACK box according to claim 5, characterized in that: A second fan (112) is arranged inside the central circular box (6), a plurality of heat dissipation holes (61) are provided on the outside of the central circular box (6), and three heat dissipation slots (71) matching the number of the battery cell bodies (13) are provided inside the partition plate (7).

7. A combined battery PACK box according to claim 6, characterized in that: The motor 1 (14), the stepper motor (52), the infrared temperature sensor (55), the fan 1 (101), the electric telescopic rod 1 (102), the fan 2 (112), the liquid pump 1 (191), the liquid pump 2 (193), the semiconductor cooling plate (197), the electric telescopic rod 2 (512) and the electric telescopic rod 3 (522) are all electrically connected to the controller.

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