A battery temperature control system for new energy vehicles

Abstract

The present invention relates to the technical field of new energy battery, and specifically relates to a battery temperature control system for new energy vehicles. It includes a housing and a multi-layer mounting rack, a suction box and an air outlet box which are sequentially arranged in the housing from top to bottom; a plurality of battery units are arranged on the multi-layer mounting rack; an air inlet box is arranged on one inner wall of the housing, and the air inlet box is connected to the suction box through an L-shaped connecting pipe, and an air inlet pipe extending out of the housing is arranged on the air inlet box; an exhaust pipe extending out of the housing is arranged on the air outlet box, and a first sealing plate and a second sealing plate are respectively slidably arranged inside the suction box and the air inlet box; 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 groups of heat exchange pipes are arranged between the air supply pipes and the corresponding air outlet pipes, a plurality of U-shaped reinforcing pipes are arranged on the heat exchange pipes, and a plurality of air exchange grooves are arranged on each U-shaped reinforcing pipe. This application can "replace" the air inside the housing, thereby reducing the temperature of the battery and the inside of the housing and facilitating the heat dissipation of the battery.

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, easily leading 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 two inner walls of the temperature control housing are penetrated 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 with a heat insulation blocking plate; a charging interface box is installed on the front surface of the temperature control housing. 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 is 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, the battery cells are cooled by a micro heat dissipation fan and a small heat exchanger. However, during the operation of the battery cells, the air temperature inside the temperature control housing will rise. At this time, the micro heat dissipation fan blows the air with the increased temperature to contact the battery cells, which will cause the temperature of the battery cells not to dissipate in time, making the battery cells operate in a continuously high-temperature state; and when the branch pipes cool the battery cells, due to the blowing of the micro heat dissipation fan, there is a large temperature difference between the surface of the branch pipes and the inside of the temperature control housing, 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 the heat of the battery cells; and through the setting of the C-shaped fixing tube, not only can the air be in full contact with the battery cells to improve the heat dissipation effect of the battery cells, but also the battery cells can be fixed 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 as follows:

[0007] 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 is connected to the suction box 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 reinforcing 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 reinforcing pipes along the length direction, the C-shaped reinforcing 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 reinforcing pipe.

[0008] Preferably, a plurality of cooling pipes are arranged inside the air inlet box.

[0009] Preferably, a water-absorbing sponge is further arranged inside the L-shaped connecting pipe.

[0010] 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.

[0011] Preferably, a driving component for synchronously moving the first sealing plate and the second sealing plate in opposite directions is further arranged inside the housing.

[0012] 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 meshes 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 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 by a synchronous belt for transmission.

[0013] Preferably, a filter screen is further arranged in each air inlet pipe.

[0014] Preferably, a temperature sensor is further arranged inside the housing.

[0015] The beneficial effects of the present application compared with the prior art are as follows:

[0016] 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 U-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.

[0017] 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 moisture in the cooled air can be absorbed by the water-absorbing sponge, thereby preventing moisture from condensing on the surface of the battery unit.

[0018] 3. By arranging an elastic telescopic rod on the first sealing plate, the present application can squeeze the water-absorbing sponge, and the squeezed moisture enters the drain pipe and is discharged from the housing, thereby ensuring that the water-absorbing sponge can be used continuously; 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

[0019] Figure 1 is a perspective view of a battery temperature control system for a new energy vehicle;

[0020] Figure 2 is a rear view of a battery temperature control system for a new energy vehicle;

[0021] Figure 3 isFigure 2 Cross-sectional view of the plane along the A-A direction;

[0022] Figure 4 is Figure 3 Partial enlarged view at position B in;

[0023] Figure 5 is Figure 3 Partial enlarged view at position C in;

[0024] Figure 6 Right view of a battery temperature control system for a new energy vehicle;

[0025] Figure 7 is Figure 6 Cross-sectional view of the plane along the D-D direction;

[0026] Figure 8 is Figure 7 Partial enlarged view at position E in;

[0027] Figure 9 Stereoscopic perspective view of a battery temperature control system for a new energy vehicle;

[0028] Figure 10 is Figure 9 Partial enlarged view at position F in;

[0029] Figure 11 Partial three-dimensional view of a battery temperature control system for a new energy vehicle;

[0030] Figure 12 is Figure 11 Partial enlarged view at position G in.

[0031] The reference numerals in the figure are:

[0032] 1 - housing; 11 - temperature sensor;

[0033] 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;

[0034] 3 - suction box; 31 - first sealing plate; 311 - elastic telescopic rod; 32 - air inlet hole; 33 - first reciprocating lead screw; 34 - first synchronous gear;

[0035] 4 - multi-layer mounting rack; 41 - rack high point; 42 - battery unit;

[0036] 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 - limiting disc; 5231 - air passing hole; 524 - drain pipe; 5241 - fifth one-way valve; 53 - cooling pipe;

[0037] 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;

[0038] 7 - Driving component; 71 - Servo motor; 72 - Driving wheel; 73 - Driven wheel; 74 - Timing belt. Specific embodiments

[0039] To further understand the features, technical means, 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.

[0040] See Figures 1 to 12As shown in the figure, 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 is connected to the suction box 3 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 to control 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 near 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 of the two 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 C-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 C-shaped reinforcement pipes 64 along the length direction, the C-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 C-shaped reinforcement pipe 64.

[0041] When the battery cell 42 is working, the first sealing plate 31 and the second sealing plate 22 are adjusted to move back and forth inside the suction box 3 and the air outlet box 2 respectively. When the first sealing plate 31 moves away from the air inlet box 5, (the first one-way valve 521 provided on the L-shaped connecting pipe 52 only allows 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 towards the air inlet box 5. The relatively hot air inside the housing 1 enters the air outlet box 2 through the U-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 towards the air inlet box 5, so as to push the air located in the suction box 3 into the air supply pipe 61. 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 U-shaped reinforcement pipe 64, thereby cooling the surface of the battery cell 42. During this process, the second sealing plate 22 moves away from the air inlet box 5. 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 settings 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 re-drawn into the suction box 3; and the multiple U-shaped reinforcement pipes 64 provided on the heat exchange single pipe 631 can fix the battery cell 42 secondarily, thereby ensuring the operation stability of the battery cell 42.

[0042] See Figure 3 As shown, a plurality of cooling pipes 53 are provided inside the air inlet box 5.

[0043] 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.

[0044] See Figure 4 As shown, a water-absorbing sponge 522 is also provided inside the L-shaped connecting pipe 52.

[0045] After the cooling pipe 53 cools down the air, the water-absorbing sponge 522 arranged in the L-shaped connecting pipe 52 absorbs the moisture contained in the air, preventing the moisture in the air from contacting the battery unit 42 to form condensed water and improving the operating safety of the battery unit 42.

[0046] See Figure 4 As shown, a limiting disk 523 is also arranged inside the L-shaped connecting pipe 52. A plurality of air holes 5231 are arranged on the limiting disk 523. An elastic telescopic rod 311 is arranged on the first sealing plate 31. The elastic telescopic rod 311 is coaxially arranged with one end of the L-shaped connecting pipe 52 close to the suction box 3. A drain pipe 524 extending towards the outside of the housing 1 is also arranged on the L-shaped connecting pipe 52. A fifth one-way valve 5241 is arranged on the drain pipe 524.

[0047] The water-absorbing sponge 522 is located below the limiting disk 523. When the first sealing plate 31 moves towards the air inlet box 5, the elastic telescopic rod 311 arranged on the first sealing plate 31 can be inserted into the L-shaped connecting pipe 52, so that the gas in the suction box 3 completely enters the air supply pipe 61, and the end of the elastic telescopic rod 311 can contact the water-absorbing sponge 522 to squeeze the water-absorbing sponge 522. The limiting disk 523 limits the water-absorbing sponge 522 to prevent it from shifting during the squeezing process; the water in the water-absorbing sponge 522 is squeezed and enters the drain pipe 524 and is discharged from the housing 1, and a fifth one-way valve 5241 is arranged on the drain pipe 524, which can prevent external air from directly entering the suction box without passing through the water-absorbing sponge.

[0048] See Figure 11 and Figure 12 As shown, a driving assembly 7 for synchronously moving the first sealing plate 31 and the second sealing plate 22 in opposite directions is also arranged 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 lead screws 33 that can rotate are arranged inside the suction box 3, and both of the two first reciprocating lead screws 33 are threadedly connected to the first sealing plate 31; two second reciprocating lead screws 24 that can rotate are arranged inside the air outlet box 2, and both of the two second reciprocating lead screws 24 are threadedly connected to the second sealing plate 22; a first synchronous gear 34 is arranged at one end of each first reciprocating lead screw 33 close to the air inlet box 5, a second synchronous gear 25 is arranged at one end of each second reciprocating lead screw 24 close to the air inlet box 5, and the first synchronous gear 34 meshes with the corresponding second synchronous gear 25; a driven wheel 73 is arranged at one end of each second synchronous gear 25 away from the second reciprocating lead screw 24. The servo motor 71 is arranged at the center of one side of the air outlet box 2 close to the air inlet box 5, and a driving wheel 72 is arranged on the motor shaft of the servo motor 71. The driving wheel 72 and the corresponding driven wheel 73 are connected by a synchronous belt 74.

[0049] By providing a servo motor 71, the servo motor 71 drives the driving wheel 72 to rotate. The driving wheel 72 drives two driven wheels 73 to rotate through a timing belt 74. With the rotation of the two driven wheels 73, through the cooperation of the first synchronous gear 34 and the second synchronous gear 25, the two first reciprocating lead screws 33 and the two second reciprocating lead screws 24 can rotate synchronously, and the rotation directions of the two first lead screws are opposite to those of the two second lead screws, so that the first sealing plate 31 and the second sealing plate 22 can move synchronously and in opposite directions, ensuring that when the first sealing plate 31 is in the air suction process, the second sealing plate 22 is also in the air suction state, and avoiding the situation that when the exhaust box 3 is exhausting, the air outlet box 2 is in the air suction state, resulting in the inability of external gas to contact the battery unit 42.

[0050] See Figure 1 As shown, a filter screen 511 is also provided in each intake pipe 51.

[0051] By providing the filter screen 511, the air entering the intake box 5 can be filtered, avoiding the contact of dust and impurities with the battery unit 42.

[0052] See Figure 3 and Figure 9 As shown, a temperature sensor 11 is also provided inside the housing 1.

[0053] By providing the temperature sensor 11, the temperature inside the housing 1 can be detected. When the temperature is relatively high, while the servo motor 71 "replaces" the air inside the housing 1, the battery unit 42 is cooled; when the temperature is relatively low, the servo motor 71 moves the first sealing plate 31 to the intake hole 32 and the second sealing plate 22 to the air outlet hole, so that the entire housing 1 forms a sealed space, ensuring the heat preservation effect of the housing 1.

[0054] The above embodiments only represent one or several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended 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 the side of the air inlet box away from the multi-layer mounting rack; The bottom of the air inlet box is connected to the suction box through an L-shaped connecting pipe; A exhaust pipe extending towards the outside of the housing is arranged on the 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. The two heat exchange single pipes are both located below the corresponding battery unit and on both sides of the corresponding rack high point. A plurality of U-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 U-shaped reinforcement pipes along the length direction. The U-shaped reinforcement pipes are in contact with the surface of the corresponding battery unit, and a plurality of ventilation slots are arranged on each U-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-absorbing 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 disk is also arranged inside the L-shaped connecting pipe. A plurality of air passing holes are arranged on the limiting disk. An elastic telescopic rod is arranged on the first sealing plate. The elastic telescopic rod is coaxially arranged with the 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, and both of the two 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, 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, 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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