Battery temperature control system for new energy automobile

Abstract

The invention relates to the technical field of new energy batteries, in particular to a battery temperature control system for a new energy automobile. Comprising a shell, and a multi-layer mounting frame, a suction box and an air outlet box which are sequentially arranged in the shell from top to bottom; a plurality of battery units are arranged on the multi-layer mounting rack; an air inlet box is arranged on the inner wall of one side of the shell, the air inlet box is connected with the suction box through an L-shaped connecting pipe, and an air inlet pipe extending out of the shell is arranged on the air inlet box; an exhaust pipe extending out of the shell is arranged on the air outlet box, and a first sealing plate and a second sealing plate are arranged in the suction box and the air inlet box in a sliding mode correspondingly. A plurality of air supply pipes are arranged on one side of the suction box; a plurality of air outlet pipes are arranged on one side of the air outlet box; a plurality of sets of heat exchange pipes are arranged between the air supply pipe and the corresponding air outlet pipe, a plurality of [-shaped reinforcing pipes are arranged on the heat exchange pipes, and a plurality of ventilation grooves are formed in each [-shaped reinforcing pipe. According to the battery shell, air in the shell can be replaced, so that the internal temperature of the battery and the shell is reduced, and heat dissipation of the battery is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and specifically relates to a battery temperature control system for new energy vehicles. Background Art

[0002] When new energy batteries for vehicles are working, they will generate a large amount of heat, which will seriously affect the discharge efficiency of the batteries. In severe cases, it will cause the chemical components of the battery cells to be unstable and easily lead to dangerous situations such as spontaneous combustion.

[0003] Chinese Patent: CN114614145B discloses a battery temperature control system for new energy vehicles, including a temperature control housing and a charging interface box. The inner walls on both sides of the temperature control housing are provided with heat dissipation tubes arranged in an array; temperature sensors are installed on the outer walls on both sides of the temperature control housing. A through ventilation opening is provided at the top of the heat dissipation tube. A connecting plate is installed on the inner wall of the heat dissipation tube, and the diameter of the connecting plate is the same as the inner diameter of the heat dissipation tube. An electric push rod is installed on the surface of the connecting plate, and the tail end of the electric push rod is connected to a heat insulation blocking plate; a charging interface box is installed on the front surface of the temperature control housing. In the present invention, by setting the heat dissipation tubes, when the external environmental temperature is below zero, the heat dissipation tubes are in a blocked state, so that the discharge efficiency of the battery cells can be maintained normal. When the external temperature is above zero, the channels formed by the ventilation openings and the heat dissipation tubes perform heat exchange treatment with the external environment to ensure the normal use of the self-cooling function of this temperature control system.

[0004] In this application, a micro heat dissipation fan and a small heat exchanger are used to dissipate heat from the battery cells. However, during the operation of the battery cells, the air temperature inside the temperature control housing will increase. At this time, the micro heat dissipation fan blows the heated air to contact the battery cells, which will cause the temperature of the battery cells to not dissipate in time, resulting in the battery cells being in a state of continuous high-temperature operation; and when the branch pipes cool the battery cells, due to the blowing of the micro heat dissipation fan, the temperature difference between the surface of the branch pipes and the inside of the temperature control housing is relatively large, and condensed water may be generated on the surface of the branch pipes, thus affecting the safe operation of the battery cells. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, a battery temperature control system for new energy vehicles is provided. Through the cooperation of an air outlet box, a suction box and an air inlet box, the air inside the housing can be "replaced", reducing the overall temperature inside the housing and facilitating the dissipation of heat from the battery cells; and through the setting of the U-shaped fixing tube, not only can the air fully contact the battery cells, improving the heat dissipation effect of the battery cells; but also can fix the battery cells secondly, thereby improving the operating stability of the battery cells.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is: A battery temperature control system for a new energy vehicle, comprising a housing, an air outlet box, a suction box, a multi-layer mounting rack, an air inlet box and a temperature control component; the air outlet box is arranged at the center of the inner wall of the bottom of the housing, the suction box is arranged on the top of the air outlet box, the multi-layer mounting rack is arranged on the top of the suction box, each layer of the multi-layer mounting rack is provided with rack high points distributed in a matrix, and a battery unit is arranged on each rack high point; the air inlet box is arranged vertically on one inner wall of the housing, and a plurality of air inlet pipes extending towards the outside of the housing are arranged on one side of the air inlet box away from the multi-layer mounting rack; the bottom of the air inlet box and the suction box are connected to each other through an L-shaped connecting pipe; a exhaust pipe extending towards the outside of the housing is arranged on one side of the air outlet box away from the air inlet box, a first one-way valve is arranged on the L-shaped connecting pipe, and a second one-way valve is arranged on the exhaust pipe; a first sealing plate is slidably arranged inside the suction box, and a second sealing plate is slidably arranged inside the air inlet box; the temperature control component is arranged on the top of the suction box and is used for controlling the temperature of the battery unit; the temperature control component comprises an air supply pipe, an air outlet pipe and a heat exchange pipe; a plurality of air inlet holes are equidistantly arranged on one side of the top of the suction box close to the air inlet box, and a plurality of exhaust holes are equidistantly arranged on one side of the top of the air outlet box away from the air inlet box; there are a plurality of air supply pipes, and the air supply pipes are arranged vertically in the corresponding air inlet holes; there are a plurality of air outlet pipes, and the air outlet pipes are arranged vertically in the corresponding exhaust holes; a third one-way valve is arranged on each air supply pipe, and a fourth one-way valve is arranged on each air outlet pipe; a plurality of groups of heat exchange pipes are arranged along the length direction between the air supply pipe and the corresponding air outlet pipe, each group of heat exchange pipes comprises two heat exchange single pipes, both heat exchange single pipes are located below the corresponding battery unit and on both sides of the corresponding rack high point, a plurality of C-shaped reinforcement pipes are arranged along the length direction between the two heat exchange single pipes, each heat exchange pipe is provided with a plurality of C-shaped reinforcement pipes along the length direction, the C-shaped reinforcement pipes are in contact with the surface of the corresponding battery unit, and a plurality of air exchange grooves are arranged on each C-shaped reinforcement pipe.

[0007] Preferably, a plurality of cooling pipes are arranged inside the air inlet box.

[0008] Preferably, a water-absorbing sponge is further arranged inside the L-shaped connecting pipe.

[0009] Preferably, a limiting disc is further arranged inside the L-shaped connecting pipe, a plurality of air passing holes are arranged on the limiting disc, an elastic telescopic rod is arranged on the first sealing plate, the elastic telescopic rod is coaxially arranged with one end of the L-shaped connecting pipe close to the suction box, and a drain pipe extending towards the outside of the housing is arranged on the L-shaped connecting pipe, and a fifth one-way valve is arranged on the drain pipe.

[0010] Preferably, a driving component for synchronously and reversely moving the first sealing plate and the second sealing plate is further arranged inside the housing.

[0011] Preferably, the driving assembly includes a servo motor, a driving wheel, and a driven wheel; two first reciprocating lead screws are rotatably arranged inside the suction box, and both of the two first reciprocating lead screws are threadedly connected to the first sealing plate; two second reciprocating lead screws are rotatably arranged inside the air outlet box, and both of the two second reciprocating lead screws are threadedly connected to the second sealing plate; a first synchronous gear is arranged at one end of each first reciprocating lead screw close to the air inlet box, a second synchronous gear is arranged at one end of each second reciprocating lead screw close to the air inlet box, and the first synchronous gear is meshed with the corresponding second synchronous gear; a driven wheel is arranged at one end of each second synchronous gear away from the second reciprocating lead screw, the servo motor is arranged at the center of the side of the air outlet box close to the air inlet box, a driving wheel is arranged on the motor shaft of the servo motor, and the driving wheel and the corresponding driven wheel are connected by a synchronous belt for transmission.

[0012] Preferably, a filter screen is further arranged in each air inlet pipe.

[0013] Preferably, a temperature sensor is further arranged inside the housing.

[0014] The beneficial effects of the present application compared with the prior art are as follows: 1. Through the cooperation of the air outlet box, the suction box, and the air inlet box, the present application can "replace" the air inside the housing, reduce the overall temperature inside the housing, and facilitate the heat dissipation of the battery unit; and through the arrangement of the C-shaped fixing pipe, not only can the air be in full contact with the battery unit to improve the heat dissipation effect of the battery unit, but also the battery unit can be fixed secondly, thereby improving the operation stability of the battery unit.

[0015] 2. Through the arrangement of the cooling pipe, the present application can cool the air entering the suction box, thereby further improving the temperature reduction effect of the battery unit, and the water in the cooled air can be absorbed by the water-absorbing sponge, thereby preventing water from condensing on the surface of the battery unit.

[0016] 3. By arranging an elastic telescopic rod on the first sealing plate, the present application can squeeze the water-absorbing sponge, and the squeezed water enters the drain pipe and is discharged from the housing, thereby ensuring that the water-absorbing sponge can be continuously used; and a fifth one-way valve is arranged on the drain pipe, thereby ensuring that the air located in the suction box can smoothly enter the air supply pipe. Description of the Drawings

[0017] Figure 1 is a three-dimensional view of a battery temperature control system for a new energy vehicle; Figure 2 is a rear view of a battery temperature control system for a new energy vehicle; Figure 3 is Figure 2 a plane cross-sectional view along the A-A direction; Figure 4 is Figure 3 Partial enlarged view at position B in Figure 5 is Figure 3 Partial enlarged view at position C in Figure 6 is the right view of a battery temperature control system for a new energy vehicle; Figure 7 is Figure 6 Plane cross-sectional view along the D-D direction; Figure 8 is Figure 7 Partial enlarged view at position E in Fig. 9 is the three-dimensional perspective view of a battery temperature control system for a new energy vehicle; Fig.10 is Fig. 9 Partial enlarged view at position F in Fig.11 is the partial three-dimensional view of a battery temperature control system for a new energy vehicle; Fig.12 is Fig.11 Partial enlarged view at position G in.

[0018] The reference numerals in the figure are: 1 - housing; 11 - temperature sensor; 2 - air outlet box; 21 - exhaust pipe; 211 - second one-way valve; 22 - second sealing plate; 23 - exhaust hole; 24 - second reciprocating lead screw; 25 - second synchronous gear; 3 - suction box; 31 - first sealing plate; 311 - elastic telescopic rod; 32 - air inlet hole; 33 - first reciprocating lead screw; 34 - first synchronous gear; 4 - multi-layer mounting rack; 41 - rack high point; 42 - battery unit; 5 - air inlet box; 51 - intake pipe; 511 - filter screen; 52 - L-shaped connecting pipe; 521 - first one-way valve; 522 - water absorption sponge; 523 - limit disk; 5231 - air passing hole; 524 - drain pipe; 5241 - fifth one-way valve; 53 - cooling pipe; 6 - temperature control component; 61 - air supply pipe; 611 - third one-way valve; 62 - air outlet pipe; 621 - fourth one-way valve; 63 - heat exchange pipe; 631 - heat exchange single pipe; 64 - C-shaped reinforcement pipe; 641 - ventilation slot; 7 - drive component; 71 - servo motor; 72 - driving wheel; 73 - driven wheel; 74 - timing belt. Specific embodiments

[0019] To further understand the features, technical means, and the specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0020] See Figures 1 to 12 As shown, a temperature control system for a battery unit 42 of a new energy vehicle includes a housing 1, an air outlet box 2, a suction box 3, a multi-layer mounting rack 4, an air inlet box 5, and a temperature control component 6; the air outlet box 2 is arranged at the center of the inner wall of the bottom of the housing 1, the suction box 3 is arranged on the top of the air outlet box 2, the multi-layer mounting rack 4 is arranged on the top of the suction box 3, each layer of the multi-layer mounting rack 4 is provided with rack high points 41 distributed in a matrix, and a battery unit 42 is arranged on each rack high point 41; the air inlet box 5 is arranged vertically on one inner wall of the housing 1, and a plurality of air inlet pipes 51 extending towards the outside of the housing 1 are arranged on the side of the air inlet box 5 away from the multi-layer mounting rack 4; the bottom of the air inlet box 5 and the suction box 3 are connected to each other through an L-shaped connecting pipe 52; a exhaust pipe 21 extending towards the outside of the housing 1 is arranged on the side of the air outlet box 2 away from the air inlet box 5, a first one-way valve 521 is arranged on the L-shaped connecting pipe 52, and a second one-way valve 211 is arranged on the exhaust pipe 21; a first sealing plate 31 is slidably arranged inside the suction box 3, and a second sealing plate 22 is slidably arranged inside the air inlet box 5; the temperature control component 6 is arranged on the top of the suction box 3 and is used for controlling the temperature of the battery unit 42; the temperature control component 6 includes an air supply pipe 61, an air outlet pipe 62, and a heat exchange pipe 63; a plurality of air inlet holes 32 are equidistantly arranged on the top of the suction box 3 close to the air inlet box 5, and a plurality of exhaust holes 23 are equidistantly arranged on the top of the air outlet box 2 away from the air inlet box 5; there are a plurality of air supply pipes 61, and the air supply pipes 61 are arranged vertically in the corresponding air inlet holes 32; there are a plurality of air outlet pipes 62, and the air outlet pipes 62 are arranged vertically in the corresponding exhaust holes 23; a third one-way valve 611 is arranged on each air supply pipe 61, and a fourth one-way valve 621 is arranged on each air outlet pipe 62; a plurality of groups of heat exchange pipes 63 are arranged along the length direction between the air supply pipe 61 and the corresponding air outlet pipe 62, each group of heat exchange pipes 63 includes two heat exchange single pipes 631, both heat exchange single pipes 631 are located below the corresponding battery unit 42 and on both sides of the corresponding rack high point 41, a plurality of U-shaped reinforcement pipes 64 are arranged along the length direction between the two heat exchange single pipes 631, each heat exchange pipe 63 is provided with a plurality of U-shaped reinforcement pipes 64 along the length direction, the U-shaped reinforcement pipes 64 are in contact with the surface of the corresponding battery unit 42, and a plurality of ventilation slots 641 are arranged on each U-shaped reinforcement pipe 64.

[0021] When the battery cell 42 is working, the first sealing plate 31 and the second sealing plate 22 are adjusted so that the first sealing plate 31 and the second sealing plate 22 move back and forth inside the suction box 3 and the air outlet box 2 respectively. When the first sealing plate 31 moves in a direction away from the air inlet box 5, (the first one-way valve 521 provided on the L-shaped connecting pipe 52 can only allow air to enter the inside of the suction box 3 along the air inlet box 5; the second one-way valve 211 provided on the exhaust pipe 21 allows air to only enter the inside of the exhaust pipe 21 along the air outlet box 2; the third one-way valve 611 provided on the air supply pipe 61 allows air to only enter the air supply pipe 61 along the suction box 3; the fourth one-way valve 621 provided on the air outlet pipe 62 allows air to only enter the air inlet and outlet box 2 along the air outlet pipe 62). At this time, the air outside the housing 1 can enter the inside of the suction box 3 along the air inlet box 5 and the L-shaped connecting pipe 52 as the first sealing plate 31 moves. During this process, the second sealing plate 22 moves in a direction close to the air inlet box 5, and the relatively hot air inside the housing 1 enters the air outlet box 2 through the C-shaped reinforcement pipe 64, the heat exchange single pipe 631, and the air outlet pipe 62, thereby reducing the temperature inside the housing 1; subsequently, the first sealing plate 31 moves in a direction close to the air inlet box 5, so as to push the air located inside the suction box 3 into the air supply pipe 61, and the air contacts the surface of the corresponding battery cell 42 fully along the air supply pipe 61, the heat exchange single pipe 631, and the C-shaped reinforcement pipe 64, thereby cooling the surface of the battery cell 42. During this process, the second sealing plate 22 moves in a direction away from the air inlet box 5, and the air inside the air outlet box 2 can be discharged outside the housing 1 through the exhaust pipe 21 on the air outlet box 2. Through the reciprocating movement of the first sealing plate 31 and the second sealing plate 22, the "replacement" of the air inside the housing 1 is realized, the overall temperature inside the housing 1 is reduced, the heat exchange efficiency between the battery cell 42 and the air inside the housing 1 is improved, and the overheating of the battery cell 42 is avoided; through the arrangement of the exhaust pipe 21 and the air inlet pipe 51, the air can be extracted relatively slowly, and the relatively hot gas inside the housing 1 can be ejected relatively quickly, which can prevent the discharged gas from being drawn back into the suction box 3 again; and the multiple C-shaped reinforcement pipes 64 provided on the heat exchange single pipe 631 can fix the battery cell 42 secondly, thereby ensuring the operation stability of the battery cell 42.

[0022] See Figure 3 As shown, a plurality of cooling pipes 53 are provided inside the air inlet box 5.

[0023] By providing the cooling pipes 53, the air sucked into the air inlet box 5 can be cooled, thereby further improving the cooling effect of the battery cell 42.

[0024] See Figure 4 As shown, a water-absorbing sponge 522 is also provided inside the L-shaped connecting pipe 52.

[0025] After the cooling pipe 53 cools the air, the water contained in the air is absorbed by the water-absorbing sponge 522 arranged in the L-shaped connecting pipe 52, thereby preventing the water in the air from contacting the battery unit 42 to form condensed water, thereby improving the safety of the operation of the battery unit 42.

[0026] See also Figure 4 As shown, a limit plate 523 is also provided inside the L-shaped connecting tube 52, and a plurality of air holes 5231 are provided on the limit plate 523. An elastic telescopic rod 311 is provided on the first sealing plate 31. The elastic telescopic rod 311 is coaxially arranged with one end of the L-shaped connecting tube 52 close to the suction box 3. A drain pipe 524 extending toward the outside of the shell 1 is also provided on the L-shaped connecting tube 52, and a fifth one-way valve 5241 is provided on the drain pipe 524.

[0027] The water-absorbing sponge 522 is located below the limiting plate 523. When the first sealing plate 31 moves toward the direction close to the air intake box 5, the elastic telescopic rod 311 arranged on the first sealing plate 31 can be inserted into the L-shaped connecting tube 52, so that the gas in the suction box 3 can completely enter the air supply pipe 61, and the end of the elastic telescopic rod 311 can contact the water-absorbing sponge 522, so as to squeeze the water-absorbing sponge 522. The water-absorbing sponge 522 is limited by the limiting plate 523 to prevent it from shifting during the squeezing process; the moisture in the water-absorbing sponge 522 is squeezed and enters the drain pipe 524 and is discharged from the shell 1, and the drain pipe 524 is provided with a fifth one-way valve 5241, so as to prevent external air from directly entering the suction box without passing through the water-absorbing sponge.

[0028] See also Fig.11 and Fig.12 As shown, a driving assembly 7 for making the first sealing plate 31 and the second sealing plate 22 move synchronously and oppositely is also provided inside the housing 1; the driving assembly 7 includes a servo motor 71, a driving wheel 72 and a driven wheel 73; two first reciprocating screw rods 33 are rotatably provided inside the suction box 3, and the two first reciprocating screw rods 33 are both threadedly connected to the first sealing plate 31; two second reciprocating screw rods 24 are rotatably provided inside the air outlet box 2, and the two second reciprocating screw rods 24 are both threadedly connected to the second sealing plate 22; each first reciprocating screw rod 33 is rotatable inside the suction box 3, and the two first reciprocating screw rods 3 ... first sealing plate 31; A first synchronous gear 34 is provided at one end near the air inlet box 5, and a second synchronous gear 25 is provided at one end of each second reciprocating screw rod 24 near the air inlet box 5, and the first synchronous gear 34 is meshed with the corresponding second synchronous gear 25; a driven wheel 73 is provided at one end of each second synchronous gear 25 away from the second reciprocating screw rod 24, and the servo motor 71 is provided at the center of one side of the air outlet box 2 near the air inlet box 5, and a driving wheel 72 is provided on the motor shaft of the servo motor 71, and the driving wheel 72 and the corresponding driven wheel 73 are connected through a synchronous belt 74.

[0029] A servo motor 71 is provided, and the servo motor 71 drives the driving wheel 72 to rotate, and the driving wheel 72 drives the two driven wheels 73 to rotate through the synchronous belt 74. With the rotation of the two driven wheels 73, the two first reciprocating screws 33 and the two second reciprocating screws 24 can be rotated synchronously through the cooperation of the first synchronous gear 34 and the second synchronous gear 25, and the rotation direction of the two first screws is opposite to the rotation direction of the two second screws, so that the first sealing plate 31 and the second sealing plate 22 can move synchronously in opposite directions, ensuring that during the air intake process of the first sealing plate 31, the second sealing plate 22 is also in the air intake state, avoiding that during the exhaust process of the suction box 3, the air outlet box 2 is in the air intake state, resulting in the external gas being unable to contact the battery cell 42.

[0030] See also Figure 1 As shown, a filter screen 511 is also provided in each air inlet pipe 51 .

[0031] By providing the filter 511 , the air entering the air intake box 5 can be filtered to prevent dust and impurities from coming into contact with the battery unit 42 .

[0032] See also Figure 3 and Fig. 9 As shown, a temperature sensor 11 is also arranged inside the housing 1 .

[0033] By providing a temperature sensor 11, the internal temperature of the shell 1 can be detected. When the temperature is high, the servo motor 71 "replaces" the air inside the shell 1 and cools down the battery unit 42. When the temperature is low, the servo motor 71 moves the first sealing plate 31 to the air inlet 32 ​​and the second sealing plate 22 to the air outlet, so that the entire shell 1 forms a sealed space to ensure the thermal insulation effect of the shell 1.

[0034] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A battery temperature control system for new energy vehicles, characterized in that: It includes a housing, an air outlet box, a suction box, a multi-layer mounting rack, an air inlet box and a temperature control component; The air outlet box is arranged at the center of the inner wall of the bottom of the housing. The suction box is arranged on the top of the air outlet box. The multi-layer mounting rack is arranged on the top of the suction box. Each layer of the multi-layer mounting rack is provided with rack high points distributed in a matrix, and a battery unit is arranged on each rack high point; The air inlet box is arranged vertically on one inner wall of the housing. A plurality of air inlet pipes extending towards the outside of the housing are arranged on one side of the air inlet box away from the multi-layer mounting rack; The bottom of the air inlet box and the suction box are connected to each other through an L-shaped connecting pipe; A exhaust pipe extending towards the outside of the housing is arranged on one side of the air outlet box away from the air inlet box. A first one-way valve is arranged on the L-shaped connecting pipe, and a second one-way valve is arranged on the exhaust pipe; A first sealing plate is slidably arranged inside the suction box, and a second sealing plate is slidably arranged inside the air outlet box; The temperature control component is arranged on the top of the suction box and is used to control the temperature of the battery unit; The temperature control component includes an air supply pipe, an air outlet pipe and a heat exchange pipe; A plurality of air inlet holes are equidistantly arranged on one side of the top of the suction box close to the air inlet box, and a plurality of exhaust holes are equidistantly arranged on one side of the top of the air outlet box away from the air inlet box; There are a plurality of air supply pipes, and the air supply pipes are arranged vertically in the corresponding air inlet holes; There are a plurality of air outlet pipes, and the air outlet pipes are arranged vertically in the corresponding exhaust holes; A third one-way valve is arranged on each air supply pipe, and a fourth one-way valve is arranged on each air outlet pipe; A plurality of groups of heat exchange pipes are arranged along the length direction between the air supply pipe and the corresponding air outlet pipe. Each group of heat exchange pipes includes two heat exchange single pipes. Both heat exchange single pipes are located below the corresponding battery unit and on both sides of the corresponding rack high point. A plurality of C-shaped reinforcement pipes are arranged along the length direction between the two heat exchange single pipes. Each heat exchange pipe is provided with a plurality of C-shaped reinforcement pipes along the length direction. The C-shaped reinforcement pipes are in contact with the surface of the corresponding battery unit, and a plurality of air exchange slots are arranged on each C-shaped reinforcement pipe.

2. A battery temperature control system for new energy vehicles according to claim 1, characterized in that: A plurality of cooling pipes are arranged inside the air inlet box.

3. A battery temperature control system for new energy vehicles according to claim 2, characterized in that: A water absorption sponge is also arranged inside the L-shaped connecting pipe.

4. A battery temperature control system for new energy vehicles according to claim 3, characterized in that: A limiting disc is also arranged inside the L-shaped connecting pipe. A plurality of air passing holes are arranged on the limiting disc. An elastic telescopic rod is arranged on the first sealing plate. The elastic telescopic rod is coaxially arranged with one end of the L-shaped connecting pipe close to the suction box. A drain pipe extending towards the outside of the housing is also arranged on the L-shaped connecting pipe, and a fifth one-way valve is arranged on the drain pipe.

5. A battery temperature control system for new energy vehicles according to claim 1, characterized in that: A driving component for synchronously and reversely moving the first sealing plate and the second sealing plate is also arranged inside the housing.

6. A battery temperature control system for new energy vehicles according to claim 5, characterized in that: The driving component includes a servo motor, a driving wheel and a driven wheel; Two first reciprocating lead screws that can rotate are arranged inside the suction box. Both first reciprocating lead screws are threadedly connected to the first sealing plate; Two second reciprocating lead screws that can rotate are arranged inside the air outlet box. Both second reciprocating lead screws are threadedly connected to the second sealing plate; A first synchronous gear is arranged at one end of each first reciprocating lead screw close to the air inlet box, and a second synchronous gear is arranged at one end of each second reciprocating lead screw close to the air inlet box. The first synchronous gear is meshed with the corresponding second synchronous gear; A driven wheel is arranged at one end of each second synchronous gear away from the second reciprocating screw rod, the servo motor is arranged at the center of one side of the air outlet box close to the air inlet box, a driving wheel is arranged on the motor shaft of the servo motor, and the driving wheel and the corresponding driven wheel are connected through a synchronous belt transmission.

7. A battery temperature control system for new energy vehicles according to claim 1, characterized in that: A filter screen is also arranged in each air inlet pipe.

8. A battery temperature control system for new energy vehicles according to claim 6, characterized in that: A temperature sensor is also arranged inside the shell.

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