Battery liquid cooling restraining device

Abstract

The utility model relates to a battery liquid cooling restraining device which comprises a battery tray, a driving assembly and a liquid cooling restraining assembly. The driving assembly and the liquid cooling restraining assembly are arranged on the battery tray; the liquid cooling restraining assembly comprises a liquid cooling circulation fixing plate and a plurality of liquid cooling circulation plates, cavities used for liquid circulation are formed in the liquid cooling circulation fixing plate and the liquid cooling circulation plates, and the liquid cooling circulation plates are connected to the battery tray in a sliding mode; the liquid cooling circulation plates are arranged at intervals from the liquid cooling circulation fixing plate to the driving assembly, and batteries are placed between the adjacent liquid cooling circulation plates or between the liquid cooling circulation plates and the liquid cooling circulation fixing plate. The battery is cooled in a liquid cooling manner, so that the battery has a proper working temperature, and heat generated by the battery can be quickly and effectively absorbed by liquid cooling; by controlling liquid circulation, the temperature of the battery can be accurately controlled within a set range, and damage or performance reduction of the battery due to overheating is avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery restraint, and in particular to a battery liquid-cooling restraint device. Background Art

[0002] During the battery formation production process, high-energy-density batteries are prone to shell expansion due to their large gas production, thus affecting the appearance and performance of the battery. In order to effectively suppress the expansion of the shell, the method of pressurized restraint of the restraint tray is currently adopted. However, this method has some problems in practical applications. The restraint space of the traditional restraint tray is a closed space relative to the battery after the restraint is completed, resulting in poor heat dissipation. The battery temperature in the restraint space cannot be guaranteed to be within the required range, which in turn affects the stability of the battery capacity. In addition, problems such as poor temperature heat dissipation effect, high difficulty in precise temperature control, low efficiency and high cost also restrict the further development of production. Therefore, in order to overcome these problems, it is urgent to improve and innovate the design and production process of the restraint tray.

[0003] After searching, it is known that in the prior art, for example, patent CN202321536164.7 discloses a battery restraint tray, including a base and a restraint mechanism arranged on the base, the restraint mechanism includes a plurality of partitions arranged on the base, the partitions are connected to the base through a limiting structure, a restraint space is formed between any two adjacent partitions, the partitions are provided with a plurality of vertical wind guide structures and transverse wind guide structures respectively arranged through, the transverse wind guide structures are connected to the vertical wind guide structures, and a heat dissipation structure is provided at the bottom of the base. The hollow design of the partition allows the flowing air to directly contact the battery to take away the emitted heat in time; the heat dissipation holes of the bottom plate cooperate with the vertical wind guide holes to form air convection, the tray as a whole is open, and the heat dissipation effect is significantly improved; a hard limit is set at the end of the tray to prevent excessive restraint from excessively squeezing the battery, causing irreversible deformation of the battery shell, and overpressure of the pole piece causing lithium deposition and black spots in the battery cell. However, the above-mentioned battery restraint tray still has the following defects in actual application:

[0004] The tray is open as a whole. Through the hollow design of the partition, the flowing air directly contacts the battery to dissipate the heat. The partition is provided with a number of vertical wind guide structures and horizontal wind guide structures that are respectively set through, and the bottom of the base is provided with a heat dissipation structure or bottom plate heat dissipation holes for heat dissipation. The heat dissipation efficiency of this structure will be limited. The heat dissipation efficiency is affected by the air flow rate and contact area through the way that the flowing air directly contacts the battery. If the air flow rate is insufficient or the contact area is not large enough, the heat dissipation effect will be greatly reduced; due to the unevenness of air flow, there may be temperature differences between batteries at different positions in the battery tray, and this temperature difference will affect the consistency and performance of the battery; and in order to form good air convection, precise design is required in parts such as the bottom plate and the air guide holes, which increases the difficulty and cost of manufacturing. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned prior art, the purpose of the present disclosure is to provide a battery liquid cooling restraint device. The battery liquid cooling restraint device cools the battery by liquid cooling, so that the battery has a suitable operating temperature. Liquid cooling can quickly and effectively absorb the heat generated by the battery and diffuse it into the environment; and by controlling the liquid circulation, the temperature of the battery can be accurately controlled within the set range to avoid damage or performance degradation of the battery due to overheating; compared with the method of using air flow to cool and dissipate the heat of the battery, the operating noise of liquid cooling is usually lower, which improves the comfort of use, and the structure is relatively simple, the number of components is small, and its reliability is high.

[0006] A battery liquid cooling restraint device disclosed in the present disclosure comprises a battery tray, a drive assembly and a liquid cooling restraint assembly;

[0007] The driving assembly and the liquid-cooling restraint assembly are both arranged on the battery tray, and the driving assembly is located at one end of the battery tray;

[0008] The liquid-cooling restraint assembly includes a liquid-cooling circulation fixing plate and a plurality of liquid-cooling circulation plates, each of which has a cavity for circulating liquid inside, the liquid-cooling circulation fixing plate is connected to the battery tray and is located at an end away from the driving assembly, and the liquid-cooling circulation plate is slidably connected to the battery tray;

[0009] A plurality of the liquid cooling circulation plates are arranged at intervals from the liquid cooling circulation fixed plate toward the driving assembly, and batteries are placed between adjacent liquid cooling circulation plates or between the liquid cooling circulation plate and the liquid cooling circulation fixed plate. The liquid cooling circulation plates are driven by the driving assembly to move closer to the liquid cooling circulation fixed plate to clamp the batteries.

[0010] Preferably, the liquid-cooling cycle fixed plate and one of the sides of the plurality of liquid-cooling cycle plates each have a first liquid inlet and a first liquid outlet, and the first liquid inlet and the first liquid outlet are respectively provided with a first joint and a second joint.

[0011] Preferably, the battery liquid cooling restraint device further comprises a liquid supply pipeline, wherein the liquid supply pipeline comprises a liquid inlet pipeline and a liquid outlet pipeline, and a plurality of third joints and a fourth joint are respectively arranged on one side of the liquid inlet pipeline and the liquid outlet pipeline;

[0012] The third connector corresponds to and is connected to the first connector one by one;

[0013] The fourth connector corresponds to and is connected to the second connector one by one;

[0014] Both ends of the liquid inlet pipe and the liquid outlet pipe are provided with fifth joints, and the fifth joints are connected with the liquid supply mechanism, so that the liquid inlet pipe, the liquid cooling restraint assembly and the liquid outlet pipe form a circulating liquid cooling loop.

[0015] Preferably, the battery tray is provided with a first through hole in the area having the liquid cooling restraint assembly along the movement path of the liquid cooling circulation plate, and the liquid cooling circulation fixed plate and the bottom of the liquid cooling circulation plate are respectively connected with a first fixed block and a sliding block, and the first fixed block and the sliding block both pass through the first through hole and are exposed on the lower surface of the battery tray.

[0016] Preferably, a second fixing block extending downward is provided on the lower surface of the battery tray near one end of the driving assembly, and a plurality of elastic guide assemblies are provided between the second fixing block and the first fixing block.

[0017] Preferably, the elastic guide assembly includes a guide shaft, the guide shaft is passed through a plurality of sliding blocks, and two ends of the guide shaft are respectively connected to the first fixed block and the second fixed block, so that the liquid cooling circulation plate moves along the guide shaft;

[0018] A spring is provided between every two adjacent sliding blocks and between the sliding block and the first fixed block, and the spring is sleeved on the outer surface of the guide shaft.

[0019] Preferably, a plurality of the guide shafts are arranged in parallel to guide the movement of the liquid-cooling circulation plate.

[0020] Preferably, the driving assembly comprises a driving fixing plate, an electric cylinder, a telescopic rod and a pressing block, the driving fixing plate is connected to the battery tray, and the inner side of the driving fixing plate is connected to the electric cylinder;

[0021] The output end of the electric cylinder is connected to one end of the telescopic rod, and is used to drive the telescopic rod to move;

[0022] The other end of the telescopic rod is connected to the pressing block, and the pressing block is used to push the liquid cooling circulation plate.

[0023] The advantages of a battery liquid cooling restraint device disclosed in the present invention are:

[0024] 1. A battery liquid cooling restraint device disclosed in the present invention has a liquid cooling restraint assembly including a liquid cooling circulation fixed plate and a plurality of liquid cooling circulation plates, the liquid cooling circulation fixed plate and the liquid cooling circulation plate both have cavities for circulating liquid; the plurality of liquid cooling circulation plates are arranged at intervals from the liquid cooling circulation fixed plate to the driving assembly, and batteries are placed between adjacent liquid cooling circulation plates or between the liquid cooling circulation plate and the liquid cooling circulation fixed plate. The battery is cooled by liquid cooling so that the battery has a suitable operating temperature. Liquid cooling can quickly and effectively absorb the heat generated by the battery and diffuse it into the environment; and by controlling the liquid circulation, the battery temperature can be accurately controlled within a set range to avoid damage or performance degradation due to overheating of the battery; compared with the method of cooling and dissipating the heat of the battery by air flow, the operating noise of liquid cooling is usually lower, which improves the comfort of use, and the structure is relatively simple, the number of components is small, and its reliability is high.

[0025] 2. A battery liquid cooling restraint device disclosed in the present invention has an elastic guide assembly including a guide shaft and a spring, a liquid cooling circulation fixed plate and a bottom of the liquid cooling circulation plate are respectively connected with a first fixed block and a sliding block, the first fixed block and the sliding block both pass through the first through hole and are exposed on the lower surface of the battery tray; the guide shaft is passed through a plurality of sliding blocks, and the two ends are respectively connected to the first fixed block and the second fixed block, when the driving assembly drives the liquid cooling circulation plate to move along the guide shaft, the movement of the liquid cooling circulation plate can be guided, thereby realizing rapid clamping of the battery; and a spring is provided between every two adjacent sliding blocks, and between the sliding block and the first fixed block, the spring is sleeved on the outer surface of the guide shaft, so that the elastic force of the spring can prevent the liquid cooling circulation plate from excessively clamping the battery; after the driving assembly stops driving, the elastic force of the spring can also be used to rebound the liquid cooling circulation plate to its initial position, thereby releasing the battery. The above structure can be used to quickly clamp and release the battery, or quickly replace and place the battery after release, thereby reducing the battery replacement time and improving efficiency; and the liquid cooling circulation plate is used to clamp both sides of the battery, which contacts the battery surface over a large area, thereby reducing the bulging of the battery during the formation process.

[0026] 3. A battery liquid cooling restraint device disclosed in the present invention has a driving component that drives the pressure block to push the liquid cooling circulation plate to move. Various specifications of batteries can be adapted by selecting different thicknesses of the pressure block, so that batteries of various specifications can be clamped. Compared with the structure that requires replacing the entire restraint device to clamp batteries of other specifications, batteries of different specifications can be clamped only by replacing pressure blocks of different thicknesses. This method can reduce costs, and one device can restrain batteries of multiple different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a battery liquid cooling restraint device disclosed in the present invention;

[0028] Figure 2 yes Figure 1 The main view of

[0029] Figure 3 yes Figure 1 A top view of

[0030] Figure 4 yes Figure 1 Left view of

[0031] Figure 5 It is a schematic diagram of the liquid supply pipeline structure of a battery liquid cooling restraint device disclosed in the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of a liquid cooling cycle fixing plate of a battery liquid cooling restraint device disclosed in the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of a liquid cooling circulation plate of a battery liquid cooling restraint device disclosed in the present invention.

[0034] Description of reference numerals:

[0035] 10-battery tray; 101-second fixing block;

[0036] 20-driving assembly; 201-driving fixing plate; 202-electric cylinder; 203-telescopic rod; 204-pressing block;

[0037] 30-liquid cooling restraint assembly; 301-liquid cooling circulation fixed plate; 3011-first fixed block; 302-liquid cooling circulation plate; 3021-sliding block;

[0038] 40-battery;

[0039] 50-first joint;

[0040] 60- second connector;

[0041] 70-liquid supply pipeline; 701-liquid inlet pipeline; 7011-third joint; 702-liquid outlet pipeline; 7021-fourth joint;

[0042] 80-elastic guide assembly; 801-guide shaft; 802-spring; DETAILED DESCRIPTION

[0043] like Figure 1 - Figure 7 As shown, a battery liquid cooling restraint device disclosed in the present disclosure includes a battery tray 10, a drive assembly 20 and a liquid cooling restraint assembly 30;

[0044] The driving assembly 20 and the liquid cooling restraint assembly 30 are both arranged on the battery tray 10, and the driving assembly 20 is located at one end of the battery tray 10; the driving assembly 20 drives the liquid cooling restraint assembly 30 to move toward the end away from the driving assembly 20;

[0045] The liquid cooling restraint assembly 30 includes a liquid cooling cycle fixing plate 301 and a plurality of liquid cooling cycle plates 302. The liquid cooling cycle fixing plate 301 and the liquid cooling cycle plates 302 both have cavities for circulating liquid. The liquid cooling cycle fixing plate 301 is connected to the battery tray 10 and is located at an end away from the driving assembly 20. A fixed support plate is connected to the outer side of the liquid cooling cycle fixing plate 301 to fix the liquid cooling cycle fixing plate 301 on the battery tray 10. The liquid cooling cycle plates 302 are slidably connected to the battery tray 10.

[0046] A plurality of liquid cooling circulation plates 302 are arranged at intervals from the liquid cooling circulation fixed plate 301 to the driving assembly 20. The batteries 40 are placed between adjacent liquid cooling circulation plates 302 or between the liquid cooling circulation plates 302 and the liquid cooling circulation fixed plate 301. The liquid cooling circulation plates 302 are driven by the driving assembly 20 to move close to the liquid cooling circulation fixed plate 301 to clamp the batteries 40. The liquid cooling circulation plates 302 clamp both sides of the batteries 40, which can not only clamp the batteries 40 but also cool the batteries 40. The liquid cooling circulation plates 302 clamp both sides of the batteries 40 and contact a large area of ​​the battery 40 surface, which can reduce the bulging of the batteries 40 during the formation process.

[0047] Furthermore, in this embodiment, the liquid cooling circulation fixed plate 301 and one of the sides of the plurality of liquid cooling circulation plates 302 have a first liquid inlet and a first liquid outlet, and the first liquid inlet and the first liquid outlet are respectively provided with a first joint 50 and a second joint 60, and the first joint 50 and the second joint 60 both adopt pagoda joints.

[0048] Furthermore, in this embodiment, the battery liquid cooling restraint device further includes a liquid supply pipeline 70, the liquid supply pipeline has a liquid inlet pipeline 701 and a liquid outlet pipeline 702, and a plurality of third joints 7011 and fourth joints 7021 are respectively provided on one side of the liquid inlet pipeline 701 and the liquid outlet pipeline 702;

[0049] The third connector 7011 corresponds to and is connected to the first connector 50 one by one;

[0050] The fourth connector 7021 corresponds to and is connected to the second connector 60 one by one;

[0051] Both ends of the liquid inlet pipe 701 and the liquid outlet pipe 702 are provided with fifth joints, and the fifth joints are connected to the liquid supply mechanism, so that the liquid inlet pipe 701, the liquid cooling restraint assembly 30 and the liquid outlet pipe 702 form a circulating liquid cooling loop;

[0052] The third joint 7011, the fourth joint 7021 and the fifth joint are all pagoda joints. The third joint 7011 of the liquid inlet pipe 701 is connected to the first joint 50 to circulate liquid into the internal cavity of the liquid-cooling circulation fixed plate 301 and the liquid-cooling circulation plate 302. The fourth joint 7021 of the liquid outlet pipe 702 is connected to the second joint 60 to discharge the liquid circulated in the internal cavity of the liquid-cooling circulation fixed plate 301 and the liquid-cooling circulation plate 302. The fifth joint at both ends of the liquid inlet pipe 701 and the liquid outlet pipe 702 is connected to the liquid supply component, so that liquid is injected into the internal cavity of the liquid-cooling circulation fixed plate 301 and the liquid-cooling circulation plate 302 by the liquid inlet pipe 701, and then the liquid in the internal cavity of the liquid-cooling circulation fixed plate 301 and the liquid-cooling circulation plate 302 flows out from the liquid outlet pipe 702, forming a circulating liquid cooling circuit.

[0053] Furthermore, in the present embodiment, a first through hole is opened in the battery tray 10 along the movement path of the liquid cooling circulation plate 302 in the area having the liquid cooling restraint assembly 30, and the bottoms of the liquid cooling circulation fixed plate 301 and the liquid cooling circulation plate 302 are respectively connected with a first fixed block 3011 and a sliding block 3021, and both the first fixed block 3011 and the sliding block 3021 pass through the first through hole and are exposed on the lower surface of the battery tray 10; each liquid cooling circulation plate 302 is connected with a sliding block 3021 at the bottom.

[0054] Furthermore, in this embodiment, a second fixing block 101 extending downward is provided on the lower surface of the battery tray 10 near one end of the driving assembly 20 , and a plurality of elastic guide assemblies 80 are provided between the second fixing block 101 and the first fixing block 3011 .

[0055] Furthermore, in this embodiment, the elastic guide assembly 80 includes a guide shaft 801, which is passed through a plurality of sliding blocks 3021, and whose two ends are respectively connected to a first fixed block 3011 and a second fixed block 101, so that the liquid cooling circulation plate 302 moves along the guide shaft 801, and the movement of the liquid cooling circulation plate 302 is guided;

[0056] A spring 802 is provided between every two adjacent sliding blocks 3021, and between the sliding block 3021 and the first fixed block 3011, and the spring 802 is sleeved on the outer surface of the guide shaft 801; when the driving component 20 stops driving and no longer pushes the liquid cooling circulation plate 302, the elastic force of the spring 802 rebounds the liquid cooling circulation plate 302 to the initial position, thereby releasing the battery 40, so that the battery 40 can be quickly released or the battery 40 can be quickly replaced; the elastic force of the spring 802 can prevent the liquid cooling circulation plate 302 from excessively clamping the battery 40.

[0057] Furthermore, in this embodiment, a plurality of guide shafts 801 are arranged in parallel to guide the movement of the liquid cooling circulation plate 302. The number of guide shafts 801 is preferably 3 groups, that is, 3 guide shafts 801 are selected to be arranged in parallel and are all located below the battery tray 10. Through the 3 guide shafts 801, the liquid cooling circulation plate 302 can move accurately to clamp the battery 40.

[0058] Furthermore, in this embodiment, the driving assembly 20 includes a driving fixing plate 201, an electric cylinder 202, a telescopic rod 203 and a pressing block 204, the driving fixing plate 201 is connected to the battery tray 10, and the inner side of the driving fixing plate 201 is connected to the electric cylinder 202, and the electric cylinder 202 is used to provide a power source;

[0059] The output end of the electric cylinder 202 is connected to one end of the telescopic rod 203, and is used to drive the telescopic rod 203 to move, and the movement is an extension or retraction movement close to or away from the liquid-cooling restraint assembly 30;

[0060] The other end of the telescopic rod 203 is connected to the pressing block 204, which is used to push the liquid cooling circulation plate 302. By selecting different thicknesses of the pressing block 204, it can adapt to batteries 40 of various specifications, so that batteries 40 of various specifications can be clamped. Compared with the structure that requires replacing the entire restraint device to clamp batteries 40 of other specifications, batteries 40 of different specifications can be clamped only by replacing the pressing blocks 204 of different thicknesses. This method can reduce costs, and one device can restrain batteries 40 of multiple different specifications.

[0061] The following will combine the above contents to fully explain the working process of a battery liquid cooling restraint device of this embodiment.

[0062] At the initial time, the liquid cooling circulation plate 302 is in the initial position, the battery 40 required for work is placed, the electric cylinder 202 is started, the electric cylinder 202 drives the telescopic rod 203 to push the pressure block 204, the pressure block 204 pushes the liquid cooling circulation plate 302 to move away from the pressure block 204, the liquid cooling circulation plate 302 moves along the guide shaft 801, and finally clamps the battery 40; when it is necessary to release the battery 40 or replace the battery 40, the electric cylinder 202 is stopped, and the telescopic rod 203 is retracted, and a spring 802 is provided between every two adjacent sliding blocks 3021, and between the sliding block 3021 and the first fixed block 3011, and the liquid cooling circulation plate 302 rebounds to the initial position through the elastic force of the spring 802.

[0063] In the above-mentioned manner, the battery 40 can be cooled by liquid cooling, so that the battery 40 has a suitable working temperature. The liquid cooling can quickly and effectively absorb the heat generated by the battery 40 and diffuse it into the environment; and by controlling the liquid circulation, the temperature of the battery 40 can be precisely controlled within the set range, so as to avoid damage or performance degradation of the battery 40 due to overheating; and the battery 40 can be quickly clamped and released, or the battery 40 can be quickly replaced and placed after release, so as to reduce the replacement time of the battery 40 and improve efficiency.

[0064] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0065] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present disclosure.

Claims

1. A battery liquid cooling restraint device, characterized in that: It comprises a battery tray (10), a drive assembly (20) and a liquid cooling restraint assembly (30); The driving assembly (20) and the liquid-cooling restraining assembly (30) are both arranged on the battery tray (10), and the driving assembly (20) is located at one end of the battery tray (10); The liquid cooling restraint assembly (30) comprises a liquid cooling circulation fixing plate (301) and a plurality of liquid cooling circulation plates (302), wherein the liquid cooling circulation fixing plate (301) and the liquid cooling circulation plates (302) both have cavities for circulating liquid inside, the liquid cooling circulation fixing plate (301) is connected to the battery tray (10) and is located at an end away from the driving assembly (20), and the liquid cooling circulation plates (302) are slidably connected to the battery tray (10); A plurality of the liquid cooling circulation plates (302) are arranged in an intermittent manner from the liquid cooling circulation fixed plate (301) toward the driving assembly (20); batteries (40) are placed between adjacent liquid cooling circulation plates (302) or between the liquid cooling circulation plates (302) and the liquid cooling circulation fixed plate (301); and the liquid cooling circulation plates (302) are driven by the driving assembly (20) to move closer to the liquid cooling circulation fixed plate (301) to clamp the batteries (40).

2. The battery liquid cooling restraint device according to claim 1, characterized in that: The liquid cooling cycle fixed plate (301) and one side of the plurality of liquid cooling cycle plates (302) are each provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet and the first liquid outlet are respectively provided with a first joint (50) and a second joint (60).

3. The battery liquid cooling restraint device according to claim 2, characterized in that: It also includes a liquid supply pipeline (70), the liquid supply pipeline having a liquid inlet pipeline (701) and a liquid outlet pipeline (702), and a plurality of third joints (7011) and a fourth joint (7021) are respectively provided on one side of the liquid inlet pipeline (701) and the liquid outlet pipeline (702); The third connector (7011) corresponds to and is in communication with the first connector (50) one by one; The fourth connector (7021) corresponds to and is in communication with the second connector (60) on a one-to-one basis; Both ends of the liquid inlet pipe (701) and the liquid outlet pipe (702) are provided with a fifth joint, and the fifth joint is connected to the liquid supply mechanism, so that the liquid inlet pipe (701), the liquid cooling restraint assembly (30) and the liquid outlet pipe (702) form a circulating liquid cooling circuit.

4. The battery liquid cooling restraint device according to claim 1, characterized in that: The battery tray (10) is provided with a first through hole in the area having the liquid cooling restraint assembly (30) along the movement path of the liquid cooling circulation plate (302); the bottoms of the liquid cooling circulation fixed plate (301) and the liquid cooling circulation plate (302) are respectively connected with a first fixed block (3011) and a sliding block (3021); the first fixed block (3011) and the sliding block (3021) both pass through the first through hole and are exposed on the lower surface of the battery tray (10).

5. The battery liquid cooling restraint device according to claim 4, characterized in that: A second fixing block (101) extending downward is provided on the lower surface of the battery tray (10) near one end of the driving assembly (20), and a plurality of elastic guide assemblies (80) are provided between the second fixing block (101) and the first fixing block (3011).

6. The battery liquid cooling restraint device according to claim 5, characterized in that: The elastic guide assembly (80) comprises a guide shaft (801), the guide shaft (801) is passed through a plurality of sliding blocks (3021), and two ends thereof are respectively connected to the first fixed block (3011) and the second fixed block (101), so that the liquid cooling circulation plate (302) moves along the guide shaft (801); A spring (802) is provided between every two adjacent sliding blocks (3021) and between the sliding block (3021) and the first fixed block (3011), and the spring (802) is sleeved on the outer surface of the guide shaft (801).

7. The battery liquid cooling restraint device according to claim 6, characterized in that: A plurality of guide shafts (801) are arranged in parallel to guide the movement of the liquid cooling circulation plate (302).

8. The battery liquid cooling restraint device according to claim 1, characterized in that: The driving assembly (20) comprises a driving fixing plate (201), an electric cylinder (202), a telescopic rod (203) and a pressing block (204); the driving fixing plate (201) is connected to the battery tray (10), and the inner side of the driving fixing plate (201) is connected to the electric cylinder (202); The output end of the electric cylinder (202) is connected to one end of the telescopic rod (203) for driving the telescopic rod (203) to move; The other end of the telescopic rod (203) is connected to the pressing block (204), and the pressing block (204) is used to push the liquid cooling circulation plate (302).

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