A new energy vehicle power battery

Abstract

The application relates to a power battery of a new energy vehicle and belongs to the technical field of batteries, which comprises a battery shell, equidistantly distributed positive plates and negative plates arranged on the inner wall of the battery shell, a through-arm connecting strip, the through-arm connecting strip being arranged on the outer wall edges of the positive plates and the negative plates and being used for fixing the positive plates and the negative plates, a bus bar, the bus bar being arranged along the length direction of the top of the positive plates and the negative plates, one end of the bus bar penetrating through the through-arm connecting strip and extending on the inner wall of the battery shell, positive / negative poles, the bus bar being integrally formed with the positive / negative poles which extend to the outside of the battery shell on the two sides of the top end of the bus bar, and a protection mounting mechanism, the protection mounting mechanism comprising a box body and a top cover which is correspondingly clamped and fixed on the box body. The application can solve the technical problems that the existing technology cannot effectively adaptively adjust the external temperature, the electric energy cannot be effectively stored, the conversion effect is reduced, and the safe and stable driving of the new energy vehicle is affected.

Description

Technical Field

[0001] This invention relates to the field of automotive battery equipment technology, specifically to a power battery for new energy vehicles. Background Technology

[0002] Electric vehicle batteries fall into two main categories: rechargeable batteries and fuel cells. Rechargeable batteries are suitable for pure electric vehicles and include lead-acid batteries, nickel-metal hydride batteries, sodium-sulfur batteries, secondary lithium batteries, air batteries, and ternary lithium batteries.

[0003] A device that converts chemical energy into electrical energy is called a chemical battery, or simply a battery. After discharge, the internal active materials can be regenerated by charging, which means storing electrical energy as chemical energy; when discharge is needed, the chemical energy is converted back into electrical energy. This type of battery is called a storage battery.

[0004] A storage battery is a device that directly converts chemical energy into electrical energy. It is designed to be rechargeable, achieving recharging through a reversible chemical reaction. Its working principle is as follows: during charging, external electrical energy is used to regenerate the internal active materials, storing electrical energy as chemical energy; when discharging is needed, the chemical energy is converted back into electrical energy for output.

[0005] Batteries have high requirements for their operating environment. In hot summer conditions, if heat dissipation is not timely, the battery is prone to overheating, which reduces product safety. In addition, in cold winter conditions, the low temperature reduces the activity of the electrolyte, making it impossible to store electricity effectively and reducing the conversion efficiency, thus affecting the discharge process and hindering the continuous power supply of new energy vehicles. Moreover, the capacity loss caused by the battery's own discharge after it is fully charged also reduces the amount of electrical energy stored, which is detrimental to the long-term safe and stable operation of new energy vehicles. Summary of the Invention

[0006] The purpose of this invention is to provide a power battery for new energy vehicles to solve the technical problems that existing technologies cannot effectively adapt to external temperature, resulting in ineffective energy storage, reduced conversion efficiency, and impact on the safe and stable operation of new energy vehicles.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A power battery for a new energy vehicle includes:

[0009] Battery casing;

[0010] Positive and negative plates are equidistantly distributed on the inner wall of the battery casing;

[0011] Through-arm connector, which is installed on the outer edge of the positive and negative electrode plates and is used to fix the positive and negative electrode plates;

[0012] The busbar is arranged along the length of the top of the positive and negative plates, and one end of the busbar passes through the connecting bar and extends onto the inner wall of the battery case.

[0013] Positive / negative terminals: Positive / negative terminals extending to the outside of the battery casing are integrally formed on both sides of the top of the busbar.

[0014] The protective installation mechanism includes a housing and a top cover that is snapped onto the housing. A rectangular frame is fixedly installed on the bottom plate of the housing. L-shaped blocks are connected to the inner walls of the rectangular frame by spring rods. A receiving cavity that is connected to the battery casing is formed between the L-shaped blocks.

[0015] Furthermore, the outer wall edges of the box are all fitted with insulation boards by adhesive fixation. A water inlet pipe and an air inlet pipe are respectively connected to the outer wall of the box. One end of the water inlet pipe is connected to a water storage tank through a pump body, and the other end is connected to a first loop pipe extending into the box. One end of the air inlet pipe extends to a fan, and the other end extends to a second loop pipe inside the box.

[0016] The first loop tube is connected to a first telescopic tube that is compatible with it, and the second loop tube has an air outlet on its outer wall and is connected to a second telescopic tube that is compatible with it.

[0017] Furthermore, both the first and second telescopic tubes are enclosed. A motor is fixedly installed on one side of the outer wall of the box. The output shaft of the motor extends to the reciprocating screw. One end of the reciprocating screw, away from the motor, is connected to the rolling groove on the outer wall of the rectangular frame. A screw nut fixed on the crossbeam is screw-driven on the reciprocating screw. The protruding part at the top of the crossbeam extends sequentially to the second loop tube and the first loop tube.

[0018] Furthermore, a first fastening ring and a second fastening ring are respectively installed between the protrusion at the top of the crossbeam and the first and second loop tubes. One end of the first loop tube is connected to a third telescopic tube placed on the inner wall of the box. One end of the third telescopic tube passes through the box and extends to the drain pipe. As the motor starts, the crossbeam drives the first and second loop tubes to slide and connect on the outer walls of the corresponding first and second telescopic tubes. The length of the first loop tube is adjusted, and the number of air outlets on the second loop tube is adjusted.

[0019] Furthermore, an exhaust pipe is fixedly installed on the inner wall of the box. One end of the exhaust pipe is connected to a conical opening inside the box, and the other end extends to the outside of the box. A first solenoid valve is connected to both the air inlet pipe and the exhaust pipe, and a second solenoid valve is connected to both the water inlet pipe and the water outlet pipe.

[0020] Furthermore, the horizontal central axis of the reciprocating screw is parallel to the horizontal central axes of the first and second return tubes.

[0021] Furthermore, it also includes a charging circuit connected to the positive / negative terminals. The charging circuit includes a first rectifier bridge BR1 connected to an AC power source and connected in series with a fuse FU. A first capacitor C1 and a transformer T and a switch are connected in parallel on the first rectifier bridge BR1. The output terminal of the transformer T is connected in series with a second rectifier bridge BR2, a diode D, and a second capacitor C2.

[0022] The transformer T is an iron-core transformer, and the output power is formed across the two ends of the second capacitor C2.

[0023] Furthermore, the top of the battery casing is connected to a liquid filling hole plug, and the casing has a wire connection hole extending into the interior of the casing.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention designs a battery casing, a protective mounting mechanism, and a box body. The battery assembly can be placed and fixed through the receiving cavity in the box body. Through the heat insulation plate on the box body, in conjunction with the first and second loop tubes and the corresponding heat dissipation mechanism, the ambient temperature required for the battery to work inside the box body can be effectively regulated and the stable constant temperature inside the box body can be maintained, ensuring that the new energy battery is at a suitable operating temperature, which can effectively improve the service life of the new energy vehicle battery.

[0026] 2. By obtaining relevant data through the temperature sensor inside the box, the flow rate of the fluid can be adjusted by directly controlling and regulating the first and second solenoid valves and the motor. Then, the air volume for heat dissipation can be selectively adjusted. At the same time, the high specific heat capacity of water is used to regulate the adsorption and removal of heat. In addition, by starting the motor and cooperating with the transmission rod assembly, the first and second loop tubes can be extended and retracted to occupy different sizes of heat dissipation area for temperature regulation, thereby improving the intelligence of the device and facilitating rapid adjustment.

[0027] 3. The charging circuit uses a three-stage intelligent charging mode to charge the battery, namely constant current charging, constant voltage charging, and float charging. Constant current charging can avoid damaging the battery due to excessive charging current, and in order to shorten the charging time, it uses the maximum allowable current. After constant current charging is completed, constant voltage charging can supplement the battery. When the battery is finished, it is basically fully charged. This stage uses pulse current charging. This charging method utilizes the charging characteristics of short-term high voltage and high current with intervals, which can improve the battery's power receiving capacity and also have the effect of desulfation. Float charging can be used to compensate for the capacity loss caused by self-discharge after the battery is fully charged, so that the battery is kept in a near-fully charged state by continuous low current charging, which can eliminate the sulfation of the negative plate. Attached Figure Description

[0028] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the structure of the power battery of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the power battery of the present invention;

[0031] Figure 3 This is a schematic diagram of the protective installation mechanism of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the box body of the present invention. Figure 1 ;

[0033] Figure 5 This is a schematic diagram of the structure of the box body of the present invention. Figure 2 ;

[0034] Figure 6 For the present invention Figure 5 Enlarged view of point A;

[0035] Figure 7 This is a top view of the box body of the present invention;

[0036] Figure 8 This is a schematic diagram of the charging circuit of the present invention.

[0037] In the diagram: 1. Battery casing; 2. Positive plate; 3. Negative plate; 4. Through-arm connector; 5. Busbar; 6. Positive / negative terminals; 7. Protective mounting mechanism; 8. Box body; 9. Top cover; 10. Rectangular frame; 11. Spring rod; 12. L-shaped stop; 13. Insulation board; 14. Water inlet pipe; 15. Air inlet pipe; 16. Pump body; 17. Water storage tank; 18. First loop tube; 19. Fan; 20. Second loop tube; 21. First telescopic tube; 22. Air outlet; 23. Second telescopic tube; 24. Motor; 25. Reciprocating screw; 26. Crossbeam; 27. Screw nut; 28. First fastening ring; 29. ​​Second fastening ring; 30. Third telescopic tube; 31. Drain pipe; 32. Exhaust pipe; 33. First solenoid valve; 34. Second solenoid valve; 35. Liquid filling hole plug; 36. Wire connection hole. Detailed Implementation

[0038] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] Reference manual attached Figure 1 - Appendix Figure 8 A power battery for a new energy vehicle, comprising:

[0041] Battery casing 1; positive electrode plate 2 and negative electrode plate 3 are equidistantly distributed on the inner wall of battery casing 1; through arm connecting strip 4 is installed on the outer edge of the positive electrode plate 2 and negative electrode plate 3 and is used to fix the positive electrode plate 2 and negative electrode plate 3; busbar 5 is arranged along the top length direction of the positive electrode plate 2 and negative electrode plate 3, and one end of the busbar 5 passes through the through arm connecting strip 4 and extends onto the inner wall of battery casing 1; positive / negative electrode post 6 is integrally formed on both sides of the top of the busbar 5, extending to the outside of battery casing 1.

[0042] The protective installation mechanism 7 includes a box body 8 and a top cover 9 that is correspondingly snapped and fixed on the box body 8. A rectangular frame 10 is fixedly installed on the bottom plate of the box body 8. The inner walls of the rectangular frame 10 are connected to L-shaped blocks 12 by spring rods 11. An accommodating cavity connected to the battery case 1 is formed between the L-shaped blocks 12.

[0043] The receiving cavity in the box 8 provides corresponding space for the placement of the battery case 1 assembly. The L-shaped stop 12 connected by the spring rod 11 around the rectangular frame 10 can clamp and fix the battery case 1 assemblies of different sizes to a certain extent, providing corresponding protection and buffering effects. At the same time, the L-shaped stop 12 can effectively contact the battery case 1 assembly around its perimeter, reducing the contact area while ensuring clamping, thereby reducing material costs.

[0044] Insulation boards 13 are installed on the outer edges of the box body 8 by adhesive fixation. Water inlet pipe 14 and air inlet pipe 15 are connected to the outer wall of the box body 8 respectively. One end of the water inlet pipe 14 is connected to the water storage tank 17 through the pump body 16, and the other end is connected to the first loop pipe 18 extending into the box body 8. One end of the air inlet pipe 15 extends to the fan 19, and the other end extends to the second loop pipe 20 inside the box body 8. The first loop pipe 18 is connected to a first telescopic pipe 21 that is adapted to it. The outer wall of the second loop pipe 20 has an air outlet 22, and the second loop pipe 20 is connected to a second telescopic pipe 23 that is adapted to it.

[0045] Both the first telescopic tube 21 and the second telescopic tube 23 are enclosed. A motor 24 is fixedly installed on one side of the outer wall of the box body 8. The output shaft of the motor 24 extends to the reciprocating screw 25. One end of the reciprocating screw 25, away from the motor 24, is connected to the rolling groove on the outer wall of the rectangular frame 10. A screw nut 27 fixed on the crossbeam 26 is screw-driven on the reciprocating screw 25. The protruding part at the top of the crossbeam 26 extends sequentially to the second loop tube 20 and the first loop tube 18.

[0046] Firstly, the first loop tube 18 and the second loop tube 20 dissipate heat through water conduction and air blowing. After the motor 24 starts, it drives the reciprocating screw 25 to rotate. With the help of the screw drive, the crossbeam 26 on the screw nut 27 can move back and forth, thereby driving the first loop tube 18 and the second loop tube 20 to move back and forth on the corresponding first telescopic tube 21 and second telescopic tube 23. With the closed arrangement of the first telescopic tube 21 and the second telescopic tube 23, the length of the first loop tube 18 can be adjusted, that is, the water conduction area can be adjusted, and the number of air outlets 22 on the second loop tube 20 can be adjusted, that is, the air volume for heat dissipation can be adjusted. Moreover, the synchronous movement of the two can synchronously increase or decrease the degree of heat dissipation, thereby effectively controlling the ambient temperature inside the box 8, providing a good working environment temperature for the battery, and improving the battery's lifespan.

[0047] This invention designs a battery casing 1, a protective mounting mechanism 7, and a box body 8. The battery assembly can be placed and fixed through the receiving cavity in the box body 8. Through the heat insulation plate 13 on the box body 8, in conjunction with the first loop tube 18, the second loop tube 20, and the corresponding heat dissipation mechanism, the ambient temperature required for the battery to work inside the box body 8 can be effectively regulated and the stability of the internal temperature of the box body 8 can be maintained. This ensures that the new energy battery is at a suitable operating temperature, which can effectively improve the service life of the new energy vehicle battery.

[0048] Example 2

[0049] Reference manual attached Figure 1 Appendix Figure 3 Appendix Figure 4 and attached Figure 5 A first fastening ring 28 and a second fastening ring 29 are respectively installed between the protrusion at the top of the crossbeam 26 and the first loop tube 18 and the second loop tube 20. One end of the first loop tube 18 is connected to a third telescopic tube 30 placed on the inner wall of the box body 8. One end of the third telescopic tube 30 passes through the box body 8 and extends to the drain pipe 31. As the motor 24 starts, the crossbeam 26 drives the first loop tube 18 and the second loop tube 20 to slide and connect on the outer walls of the corresponding first telescopic tube 21 and the second telescopic tube 23. The length of the first loop tube 18 is adjusted, and the number of air outlets 22 on the second loop tube 20 is adjusted.

[0050] An exhaust pipe 32 is fixedly installed on the inner wall of the box 8. One end of the exhaust pipe 32 is connected to a conical opening inside the box 8, and the other end extends to the outside of the box 8. A first solenoid valve 33 is connected to both the air inlet pipe 15 and the exhaust pipe 32. A second solenoid valve 34 is connected to both the water inlet pipe 14 and the drain pipe 31. The horizontal central axis of the reciprocating screw 25 is parallel to the horizontal central axes of the first loop tube 18 and the second loop tube 20.

[0051] When the new energy vehicle battery is in a low-temperature environment in winter, in order to maintain the internal temperature of the box 8, the top cover 9 on the box 8 is closed, and with the external insulation plate 13, the battery will generate corresponding heat when it is working. This, together with the sealed cavity inside the box 8, can form a good sealed space, thereby preventing the heat from being lost too quickly. This can ensure the temperature balance inside the box 8. In addition, when the temperature is high in summer, in order to ensure good heat dissipation inside the box 8, water can be introduced into the first loop pipe 18 inside the box 8 through the water tank 17 and the water inlet pipe 14. The high specific heat capacity of water is used to remove heat, and at the same time, the fan 19 dissipates the heat inside the box 8 by blowing air.

[0052] In addition, the first fastening ring 28 and the second fastening ring 29 on the crossbeam 26 not only provide corresponding support to the second loop tube 20 and the first loop tube 18, but also drive them to move horizontally in sync, thereby changing the size of the heat dissipation area at the same time. One end of the first loop tube 18 is connected to a third telescopic tube 30 placed on the inner wall of the box 8. In order to ensure the normal telescopic movement of the first loop tube 18, there is a third telescopic tube 30 between the first loop tube 18 and the drain pipe 31. This allows the first telescopic tube 21 on the first loop tube 18 to move normally while effectively conducting heat. In addition, a circulation pump can be adapted between the drain pipe 31 and the water storage tank 17, so that the water resources can be reused and heat dissipated, avoiding the phenomenon of resource waste, which is conducive to environmental protection. The top of the battery case 1 is connected to a liquid filling hole plug 35, and the box 8 is provided with a wire connection hole 36 extending into the inside of the box 8.

[0053] The air inlet pipe 15 and the exhaust pipe 32 are each connected to a first solenoid valve 33, and the water inlet pipe 14 and the drain pipe 31 are each connected to a second solenoid valve 34. The setting of the first solenoid valve 33 and the second solenoid valve 34 can change the fluid flow rate, which can further change the heat dissipation requirements to different degrees. Based on the feedback from the temperature sensor inside the box 8, the temperature inside the box 8 can be precisely controlled to achieve the appropriate working environment temperature requirements.

[0054] By acquiring relevant data through the temperature sensor inside the housing 8, the flow rate of the fluid can be adjusted by directly controlling and regulating the first solenoid valve 33, the second solenoid valve 34, and the motor 24. Then, the airflow for heat dissipation can be selectively adjusted. At the same time, the high specific heat capacity of water is used to regulate the adsorption and removal of heat. In addition, by starting the motor 24, in conjunction with the transmission rod assembly, the first loop tube 18 and the second loop tube 20 can be extended and retracted, thereby occupying different sizes of heat dissipation area for temperature regulation. This improves the intelligence of the device and facilitates rapid adjustment.

[0055] Example 3

[0056] Reference manual attached Figure 8 The power battery of the new energy vehicle also includes a charging circuit connected to the positive / negative terminals 6. The charging circuit includes a first rectifier bridge BR1 connected to the AC power supply and connected in series with the fuse FU. A first capacitor C1 and a transformer T and a switch are connected in parallel on the first rectifier bridge BR1. The output terminal of the transformer T is connected in series with a second rectifier bridge BR2, a diode D and a second capacitor C2. The transformer T is an iron core transformer and the output power is formed across the two ends of the second capacitor C2.

[0057] The charging circuit uses a three-stage intelligent charging mode to charge the battery: constant current charging, constant voltage charging, and float charging. Constant current charging avoids damage to the battery due to excessive charging current and uses the maximum allowable current to shorten charging time. After constant current charging, constant voltage charging provides supplementary charging. By the end of this stage, the battery is almost fully charged. This stage uses pulse current charging, which utilizes the characteristics of short-term, high-voltage, high-current charging with intervals to improve the battery's charge-receiving capacity and remove sulfur. Float charging can compensate for the capacity loss caused by self-discharge after the battery is fully charged, keeping the battery in a near-fully charged state with continuous low-current charging, which helps eliminate sulfation of the negative plate.

[0058] The charging circuit first uses a first rectifier bridge BR1 to rectify the AC power from the mains grid into DC power. A fuse FU is installed on the first rectifier bridge BR1. When the line is overloaded or the short-circuit current increases, the fuse FU can blow, cutting off the current and protecting the circuit. The first capacitor C1 connected to the output of the first rectifier bridge BR1 limits the charging current from being too large while ensuring the maximum allowable current, thus shortening the charging time. The current then passes through a transformer T to boost the voltage, further shortening the charging time. The current then passes through a second rectifier bridge BR2, making the power supply a high-frequency DC current, i.e., a pulse current. This smaller current is used for maintenance charging, compensating for the capacity loss caused by the battery's own discharge after full charging. Furthermore, the diode D connected to the second capacitor C2 provides unidirectional conductivity, preventing reverse current flow and stabilizing the voltage of the entire circuit, ensuring stable operation of the charging circuit.

[0059] After charging, impurities in the electrolyte and plates can cause partial discharge on the plates, resulting in a loss of battery capacity. Therefore, to ensure the battery is in a fully charged standby state, the battery and charging circuit are connected in parallel to the DC bus. The charger, in addition to handling the constant DC load, also provides the battery with an appropriate charging current. During battery use, individual differences and temperature variations can cause voltage imbalances at the battery terminals. To prevent this imbalance from worsening, the charging voltage of the battery pack needs to be increased for activation charging. Therefore, a transformer T is included in the charging circuit to improve voltage and charging efficiency.

[0060] During constant current charging, the charger automatically adjusts the output voltage to charge the battery with a constant current. After constant current charging ends, the charger output voltage remains unchanged, maintaining this constant voltage to charge the battery. During constant voltage charging, the battery voltage increases while the current decreases. Excessive voltage during the constant voltage stage can cause excessive water loss and overcharging, while insufficient voltage can lead to undercharging and battery sulfation. Therefore, to strictly control the charging voltage and current, the charging circuit replaces the smooth DC current during charging with pulse current charging. This utilizes the charging characteristics of short-duration high-voltage and high-current charging with intervals, which improves the battery's charging capacity and also has a desulfation effect.

[0061] The float charging stage is actually trickle charging, but the charging speed and current are lower. It is a maintenance charging method that allows for safe charging for a longer period of time. Through trickle charging, the battery can be charged to nearly 100%. Too small a current is not enough to compensate for the battery's self-discharge, while too large a current will lead to overcharging and water loss. Charging with a small current for a long time can help eliminate sulfation of the negative plate.

[0062] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0063] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A power battery for a new energy vehicle, characterized in that, include: Battery casing (1); Positive electrode plate (2) and negative electrode plate (3) are equidistantly distributed on the inner wall of the battery casing (1). Through-arm connector (4), which is installed on the outer edge of the positive electrode plate (2) and the negative electrode plate (3), and is used to fix the positive electrode plate (2) and the negative electrode plate (3). Busbar (5), the busbar (5) is arranged along the length of the top of the positive electrode plate (2) and the negative electrode plate (3), and one end of the busbar (5) passes through the connecting bar (4) and extends to the inner wall of the battery case (1); Positive / negative terminals (6), the top two sides of the busbar (5) are integrally formed with positive / negative terminals (6) extending to the outside of the battery case (1). The protective installation mechanism (7) includes a box body (8) and a top cover (9) that is fixedly snapped onto the box body (8). A rectangular frame (10) is fixedly installed on the bottom plate of the box body (8). The inner walls of the rectangular frame (10) are connected to L-shaped blocks (12) by spring rods (11). A receiving cavity connected to the battery shell (1) is formed between the L-shaped blocks (12). The outer edges of the box body (8) are all fixed with heat insulation boards (13) by adhesive. A water inlet pipe (14) and an air inlet pipe (15) are connected to the outer walls of the box body (8). One end of the water inlet pipe (14) is connected to a water storage tank (17) through a pump body (16), and the other end is connected to a first loop pipe (18) extending into the box body (8). One end of the air inlet pipe (15) extends to a fan (19), and the other end extends to a second loop pipe (20) inside the box body (8). The first loop tube (18) is connected to a first telescopic tube (21) that is compatible with it, the second loop tube (20) has an air outlet (22) on its outer wall, and the second loop tube (20) is connected to a second telescopic tube (23) that is compatible with it. The first telescopic tube (21) and the second telescopic tube (23) are both enclosed. A motor (24) is fixedly installed on one side of the outer wall of the box (8). The output shaft of the motor (24) extends to the reciprocating screw (25). One end of the reciprocating screw (25) away from the motor (24) is connected to the rolling groove on the outer wall of the rectangular frame (10). The reciprocating screw (25) is screw-driven with a screw nut (27) fixed on the crossbeam (26). The protruding part at the top of the crossbeam (26) extends to the second loop tube (20) and the first loop tube (18) respectively. A first fastening ring (28) and a second fastening ring (29) are respectively installed between the protrusion at the top of the crossbeam (26) and the first loop tube (18) and the second loop tube (20). One end of the first loop tube (18) is connected to a third telescopic tube (30) placed on the inner wall of the box (8). One end of the third telescopic tube (30) passes through the box (8) and extends to the drain pipe (31). As the motor (24) starts, the crossbeam (26) drives the first loop tube (18) and the second loop tube (20) to slide on the outer wall of the corresponding first telescopic tube (21) and the second telescopic tube (23). The length of the first loop tube (18) is adjusted, and the number of air outlets (22) on the second loop tube (20) is adjusted.

2. The power battery for a new energy vehicle according to claim 1, characterized in that, An exhaust pipe (32) is fixedly installed on the inner wall of the box (8). One end of the exhaust pipe (32) is connected to a conical opening inside the box (8), and the other end extends to the outside of the box (8). A first solenoid valve (33) is connected to both the air inlet pipe (15) and the exhaust pipe (32). A second solenoid valve (34) is connected to both the water inlet pipe (14) and the drain pipe (31).

3. The power battery for a new energy vehicle according to claim 1, characterized in that, The horizontal central axis of the reciprocating screw (25) is parallel to the horizontal central axis of the first loop tube (18) and the second loop tube (20).

4. The power battery for a new energy vehicle according to claim 1, characterized in that, It also includes a charging circuit connected to the positive / negative terminals (6), the charging circuit including a first rectifier bridge BR1 connected to the AC power supply and connected in series with the fuse FU, the first rectifier bridge BR1 having a first capacitor C1 connected in parallel and a transformer T and a switch connected in series, the output terminal of the transformer T having a second rectifier bridge BR2, a diode D and a second capacitor C2 connected in series respectively. The transformer T is an iron-core transformer, and the output power is formed across the two ends of the second capacitor C2.

5. A power battery for a new energy vehicle according to any one of claims 1-4, characterized in that, The top of the battery casing (1) is connected to a liquid filling hole screw plug (35), and the box body (8) is provided with a wire connection hole (36) extending into the inside of the box body (8).

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