Battery performance detection device

Abstract

The utility model discloses a battery performance detection device which comprises a detection box, a partition plate, a detection assembly and a fire extinguishing assembly. The partition plate is arranged in the detection box and divides an inner cavity of the detection box into a detection cavity and a material collecting cavity located below the detection cavity, and the partition plate is provided with a channel communicated with the detection cavity and the material collecting cavity; the detection assembly is arranged in the detection box, is located in the detection cavity and is used for detecting battery performance; the fire extinguishing assembly is provided with a spraying end located in the detection cavity, and the spraying end is used for spraying a fire extinguishing agent towards the partition plate. According to the scheme, when the battery burns due to the fact that pressure reaches a critical value or other reasons, a fire extinguishing agent can be sprayed to the battery to be detected through the spraying end, battery explosion caused by fire increase is prevented, explosion prevention is effectively achieved, the fire extinguishing agent can be collected through the material collecting cavity, and the situation that follow-up detection is affected due to the fact that the fire extinguishing agent is accumulated in the detection cavity is avoided; the continuous detection convenience is improved, the fire extinguishing agent collected in the material collecting cavity can be conveniently recycled after being purified, the cost is saved, and the practicability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery detection device technical field, concretely relates to a battery performance detection device. BACKGROUND

[0002] The battery is the power generation device that chemical energy is directly converted into electric energy, is now widely used in industrial production and processing etc. field, in order to guarantee the safety of battery when working, needs to detect its each aspect performance, and the compression resistance performance detection is necessary one detection project.

[0003] The authorization announcement No. CN221528254U discloses a kind of compression resistance performance detection device for lithium battery, it is positioned to lithium battery left and right side and front and rear end by positioning assembly, make lithium battery positioning stable, prevent lithium battery from moving when compression resistance detection, affect detection result;And by lifting assembly make electric push rod drive positioning assembly slide up and down, so that the device is suitable for different specifications of lithium battery;By box, protective box door cooperate to play the protection function, prevent the problem of fragment hurt.

[0004] However, battery is prone to burning and explosion when under pressure, especially fuel cell, when fuel cell reaches critical value and burns, the battery compression resistance performance detection device in prior art itself cannot effectively prevent explosion, generally by artificial to battery performance detection device spray fire extinguishing agent to extinguish fire and prevent explosion, and the fire extinguishing agent sprayed is easy to spray outside, not convenient for recycling. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the above technical deficiencies, and provides a battery performance detection device, which solves the technical problems that the battery compression resistance performance detection device in prior art itself cannot effectively prevent explosion when fuel cell reaches critical value and burns, generally by artificial to battery performance detection device spray fire extinguishing agent to extinguish fire and prevent explosion, and the fire extinguishing agent sprayed is easy to spray outside, not convenient for recycling.

[0006] To achieve the above technical purpose, the utility model takes the following technical scheme:

[0007] The utility model provides a kind of battery performance detection device, comprising:

[0008] Detection box;

[0009] Partition, be located in the detection box, and the inner cavity of the detection box is separated into detection cavity and the material collecting cavity located in the detection cavity below, the partition is equipped with the passageway that the detection cavity and the material collecting cavity are communicated;

[0010] Detection assembly, be located in the detection box, and be located in the detection cavity, for detecting battery performance;And

[0011] The fire extinguishing assembly has a spraying end in the detection cavity, which sprays fire extinguishing agent towards the partition plate.

[0012] In some embodiments, the detection assembly comprises a detection pressing plate and a detection driving part, the detection pressing plate is arranged in the detection cavity and can move towards and away from the partition plate, and the detection driving part is drivingly connected with the detection pressing plate and used to drive the detection pressing plate to move towards and away from the partition plate.

[0013] In some embodiments, the battery performance detection device further comprises a fixing cover, the fixing cover is arranged in the detection cavity and located on the inner wall of the detection cavity away from the partition plate, and forms a protection cavity together with the inner wall of the detection cavity, and the fixing cover is provided with an avoiding hole communicating with the protection cavity and located on the outer wall of the partition plate.

[0014] The detection driving part is a detection hydraulic cylinder, the cylinder body of the detection hydraulic cylinder is located in the protection cavity, and the hydraulic rod of the detection hydraulic cylinder is arranged to pass through the avoiding hole and is connected with the detection pressing plate.

[0015] In some embodiments, the fire extinguishing assembly comprises a spray head, a water tank, a water pump and a water guide pipe, the spray head is arranged in the detection cavity and has an outlet end facing the partition plate, the water tank is arranged outside the detection tank, the water inlet of the water pump is communicated with the water tank, one end of the water guide pipe is communicated with the water outlet of the water pump, and the other end of the water guide pipe is communicated with the spray head, and the spraying end is the outlet end of the spray head.

[0016] In some embodiments, a plurality of spray heads are arranged along the circumference of the partition plate.

[0017] A plurality of water guide pipes corresponding to the spray heads are arranged, one end of each water guide pipe is communicated with the water outlet of the water pump, and the other end of each water guide pipe is communicated with the corresponding spray head.

[0018] In some embodiments, the fire extinguishing assembly further comprises a smoke detector.

[0019] In some embodiments, the bottom of the aggregate cavity is provided with a drainage port, and the fire extinguishing assembly further comprises a drainage valve arranged in the drainage port.

[0020] In some embodiments, the battery performance detection device further comprises a positioning driving part and two groups of positioning clamping plates, the two groups of positioning clamping plates are arranged on the side of the partition plate close to the detection cavity and can move towards and away from each other, and the positioning driving part is drivingly connected with the two groups of positioning clamping plates and used to drive the two groups of positioning clamping plates to move towards and away from each other.

[0021] In some embodiments, the detection cavity has a placing opening located on the side of the partition plate away from the aggregate cavity;

[0022] The battery performance detection device further comprises a movable door movably arranged in the detection box and located at the placing opening and capable of opening and closing the placing opening in a movable stroke.

[0023] In some embodiments, one of the detection box and the movable door is provided with a sliding rail, and the other is provided with a sliding groove in which the sliding rail is slidably arranged, the sliding groove being arranged along the arrangement direction of the detection cavity and the aggregate cavity;

[0024] The battery performance detection device further comprises a door body driving part in driving connection with the movable door for driving the movable door to move along the extension direction of the sliding groove.

[0025] In some embodiments, the movable door is provided with a gear slot along the extension direction of the sliding groove;

[0026] The door body driving part comprises a transmission gear, a driving rack and a door body driving cylinder, the transmission gear being rotatably arranged in the detection box and engaging the gear slot and the driving rack respectively, the door body driving cylinder being mounted on the detection box and having a piston rod connected with the driving rack, the piston rod driving the transmission gear to rotate via the driving rack when being extended or retracted.

[0027] Compared with the prior art, when detecting a battery by means of the battery performance detection device, the detection box is placed with the detection cavity located above the aggregate cavity, then the battery to be detected is placed on the upper side of the partition plate, i.e. on the side of the partition plate close to the detection cavity, then the battery to be detected is detected by means of the detection assembly. When the battery is combusted due to reaching a critical value under pressure or other reasons, the fire extinguishing agent can be sprayed to the battery to be detected by means of the spraying end, so as to prevent the battery from exploding due to the increase of fire, and effectively realize explosion prevention. Meanwhile, the fire extinguishing agent after being sprayed can enter the aggregate cavity through the passage of the partition plate and be collected, on the one hand, to avoid the accumulation of the fire extinguishing agent in the detection cavity and affect the subsequent detection, and improve the convenience of continuous detection; on the other hand, the fire extinguishing agent collected in the aggregate cavity can be purified and recycled, so as to save cost and have good practicability. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a sectional view of the battery performance detection device provided by the embodiment of the utility model;

[0029] Figure 2 is Figure 1 a partial schematic view of the battery performance detection device;

[0030] Figure 3 isFigure 1 Figure 6 is a top view of the detection box, the movable door and the door body driving part;

[0031] Figure 4 Figure 7 is a schematic view of the movable door; Figure 3 Figure 8 is an enlarged schematic view of A in figure 7.

[0032] Figure 5 Figure 9 is a schematic view of the movable door; Figure 3 Figure 10 is an enlarged schematic view of A in figure 9.

[0033] Explanation of reference signs:

[0034] 1, detection box; 1a, detection cavity; 1b, material collecting cavity; 11, sliding rail; 2, partition plate; 2a, channel; 3, detection assembly; 31, detection pressing plate; 32, detection driving part; 4, fire extinguishing assembly; 41, spraying end; 42, water tank; 43, water pump; 44, water guide pipe; 45, smoke detector; 46, drainage valve; 5, fixed cover; 6, positioning driving part; 61, positioning air cylinder; 62, mounting cover; 7, positioning clamping plate; 8, movable door; 8a, tooth groove; 8b, sliding groove; 81, transparent window; 9, door body driving part; 91, transmission gear; 92, driving rack; 93, door body driving air cylinder; 94, rotating shaft. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be described in further detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0036] In order to solve the technical problem in the prior art that when the fuel cell is compressed to reach a critical value and burns, the battery pressure resistance performance detection device in the prior art cannot effectively prevent explosion, and generally, artificial fire extinguishing agent is sprayed to the battery performance detection device for fire extinguishing and explosion prevention, and the sprayed fire extinguishing agent is easy to be sprayed outside and is inconvenient to recycle, the utility model provides a battery performance detection device, when the battery burns due to compression to reach a critical value, the fire extinguishing agent can be sprayed to the battery to be detected through the spraying end, the fire is prevented from increasing to cause the battery explosion, and explosion prevention is effectively realized. At the same time, the fire extinguishing agent after spraying can enter the material collecting cavity through the channel of the partition plate and be collected, on the one hand, the detection cavity is prevented from being filled with the fire extinguishing agent to affect subsequent detection, and the continuous detection convenience is improved; on the other hand, the collected fire extinguishing agent in the material collecting cavity is convenient to purify and recycle, cost is saved, and the utility is good.

[0037] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2This is a schematic diagram of the battery performance testing device in one embodiment of the present invention. The battery performance testing device includes a testing box 1, a partition 2, a testing component 3, and a fire extinguishing component 4. The partition 2 is disposed inside the testing box 1 and divides the inner cavity of the testing box 1 into a testing chamber 1a and a collection chamber 1b located below the testing chamber 1a. The partition 2 is provided with a channel 2a connecting the testing chamber 1a and the collection chamber 1b. The testing component 3 is disposed inside the testing box 1 and located in the testing chamber 1a, and is used to test battery performance. The fire extinguishing component 4 has a spraying end 41 located in the testing chamber 1a, and the spraying end 41 is used to spray fire extinguishing agent toward the partition 2.

[0038] When testing batteries using the battery performance testing device provided by this utility model, the testing box 1 is placed with the testing chamber 1a above the collection chamber 1b. The battery to be tested is then placed on the upper side of the partition 2, specifically on the side of the partition 2 closest to the testing chamber 1a. The battery performance is then tested using the testing component 3. When the battery burns due to pressure reaching a critical value or other reasons, a fire extinguishing agent can be sprayed onto the battery through the spray nozzle 41 to prevent the fire from escalating and causing an explosion, effectively achieving explosion prevention. Simultaneously, the sprayed fire extinguishing agent can be collected in the collection chamber 1b through the channel 2a of the partition 2. This avoids the accumulation of fire extinguishing agent in the testing chamber 1a, which could affect subsequent testing and improve the convenience of continuous testing. Furthermore, the fire extinguishing agent collected in the collection chamber 1b can be purified and recycled, saving costs and demonstrating good practicality.

[0039] It should be noted that in this design, partition 2 is configured as a grid plate with multiple through holes. Furthermore, the extinguishing agent is a recyclable agent, specifically water, dry powder extinguishing agent, or fine sand; in this design, water is used.

[0040] It should be understood that the specific configuration of the detection component 3 is not limited. It can achieve pressure testing by connecting a hammer to a winch rope, or by rotating the hammer with a motor. Furthermore, battery polarity can also be detected using a voltmeter or ammeter.

[0041] In one embodiment, the detection component 3 includes a detection plate 31 and a detection drive unit 32. The detection plate 31 is disposed in the detection cavity 1a and can move closer to and away from the partition 2. The detection drive unit 32 is drivenly connected to the detection plate 31 and is used to drive the detection plate 31 closer to and away from the partition 2.

[0042] In this solution, the detection drive unit 32 drives the detection pressure plate 31 to approach the separator 2 until it presses against the battery to be tested on the separator 2, so as to perform pressure resistance test. The structure is simple and reliable.

[0043] In one embodiment, the fire extinguishing assembly 4 includes a nozzle, a water tank 42, a water pump 43, and a water guide pipe 44. The nozzle is located inside the detection chamber 1a, and its outlet end faces the partition 2. The water tank 42 is located outside the detection chamber 1. The inlet of the water pump 43 is connected to the water tank 42. One end of the water guide pipe 44 is connected to the outlet of the water pump 43, and the other end is connected to the nozzle. The spraying end 41 is the outlet end of the nozzle.

[0044] In this embodiment, the water tank 42 is placed outside the detection box 1, and the water in the water tank 42 is pumped to the nozzle by the water pump 43. When the battery explodes, water can be supplied in time to extinguish the battery, preventing the battery from continuing to burn and explode, thus improving safety performance.

[0045] In one embodiment, multiple nozzles are provided, and the multiple nozzles are arranged at intervals along the circumference of the partition 2; multiple water guide pipes 44 are provided corresponding to the nozzles, and one end of each water guide pipe 44 is connected to the outlet of the water pump 43, and the other end is connected to the corresponding nozzle.

[0046] In this embodiment, multiple nozzles are provided to simultaneously spray water onto the battery, thereby improving fire extinguishing efficiency. Specifically, in this design, two nozzles and two water guide pipes 44 are provided. In addition, the fire extinguishing assembly 4 also includes two water guide chambers, which are located between the nozzles and the water guide pipes 44.

[0047] In one embodiment, the fire extinguishing component 4 also includes a smoke detector 45.

[0048] In this embodiment, the smoke detector 45 is electrically connected to a PLC (Programmable Logic Controller) or a microcontroller, and the PLC or microcontroller is electrically connected to the water pump 43. Thus, when combustion occurs inside the battery, the smoke detector 45 can automatically detect the smoke signal and start the water pump 43. The water pump 43 then sprays water from the water tank 42 through the water pipe 44 and a nozzle onto the battery, improving the response speed. It should be noted that the specific control circuits and principles of the smoke detector 45 and the water pump 43 are existing technologies and will not be elaborated upon here.

[0049] It should be noted that the detection drive unit 32 can be configured as a linear motor, a drive cylinder, or other forms.

[0050] Specifically, in one embodiment, the battery performance testing device further includes a fixing cover 5, which is installed in the testing cavity 1a and located on the inner wall of the testing cavity 1a away from the partition 2, and forms a protective cavity with the inner wall of the testing cavity 1a. The fixing cover 5 is provided with a clearance hole connected to the protective cavity near the outer wall of the partition 2. The testing drive unit 32 is a testing hydraulic cylinder, the cylinder body of the testing hydraulic cylinder is located in the protective cavity, and its hydraulic rod moves through the clearance hole and is connected to the testing pressure plate 31.

[0051] In this embodiment, the detection drive unit 32 is configured as a hydraulic cylinder to ensure sufficient downward pressure, and the cylinder body of the detection hydraulic cylinder is placed in the fixed cover 5 to avoid damage to the hydraulic cylinder when the battery burns, thereby extending the service life of the detection hydraulic cylinder.

[0052] In one embodiment, the bottom of the collection chamber 1b is provided with a drain outlet, and the fire extinguishing assembly 4 also includes a drain valve 46, which is located at the drain outlet.

[0053] In this embodiment, a drain outlet is provided at the bottom of the collection chamber 1b, and a drain valve 46 is provided at the drain outlet to drain the water accumulated in the collection chamber 1b in a timely manner and ensure the normal use of the device.

[0054] In one embodiment, the battery performance testing device further includes a positioning drive unit 6 and two sets of positioning clamps 7. The two sets of positioning clamps 7 are located on the side of the partition 2 near the testing cavity 1a and can move closer to each other and further away from each other. The positioning drive unit 6 is drivenly connected to the two sets of positioning clamps 7 to drive the two sets of positioning clamps 7 to move closer to each other and further away from each other.

[0055] In this embodiment, two sets of positioning clamps 7 are provided on the upper side of the partition 2. The two sets of positioning clamps 7 limit the battery to be tested, so as to prevent the battery from accidentally deviating during the pressing of the detection plate 31, thereby improving the detection stability and accuracy.

[0056] It should be noted that in this solution, the positioning drive unit 6 includes two sets of positioning cylinders 61 and mounting covers 62, which correspond to two sets of positioning clamps 7 respectively. Each mounting cover 62 surrounds the inner wall of the detection cavity 1a to form a mounting cavity. The mounting cavity is provided with a through hole on the side of the mounting cavity near the other mounting cavity. The positioning cylinder 61 is installed in the corresponding mounting cavity, and the piston rod of the positioning cylinder 61 extends out from the through hole and is connected to the corresponding positioning clamp 7.

[0057] In one embodiment, please refer to Figure 3 The detection chamber 1a has a storage opening, which is located on the side of the partition 2 away from the collection chamber 1b. The battery performance testing device also includes a movable door 8, which is movably disposed in the detection box 1 and located at the storage opening, and can open and close the storage opening during its movement.

[0058] In this embodiment, before testing, the movable door 8 is moved and the storage opening is opened to allow the battery to be tested to be placed in. After the battery is placed, the movable door 8 is moved in the opposite direction to close the storage opening, ensuring that the battery is tested in a relatively sealed environment, thereby improving safety performance.

[0059] It should be noted that the movable door 8 is equipped with a transparent viewing window 81.

[0060] In one embodiment, please refer to Figures 3 to 5The detection box 1 and the movable door 8 are provided with a slide rail, and the other is provided with a slide groove for the slide rail to slide. The slide groove extends along the layout direction of the detection chamber 1a and the collection chamber 1b. The battery performance detection device also includes a door drive unit 9, which is drivenly connected to the movable door 8 and is used to drive the movable door 8 to move along the extension direction of the slide groove 8b.

[0061] In this embodiment, the cooperation between the sliding groove 8b and the slide rail 11 prevents the movable door 8 from detaching from the detection box 1, and the door drive unit 9 drives the movable door 8 to move, thereby opening and closing the storage opening, facilitating automation. Specifically, in this solution, the sliding groove 8b is provided on the movable door 8, and the slide rail 11 is provided on the detection box 1.

[0062] It should be noted that the specific configuration of the door drive unit 9 is not limited, as long as it enables the opening and closing of the movable door 8 to the storage opening. In one embodiment, the door drive unit 9 is configured as a linear motor. In another embodiment, the door drive unit 9 is configured as a hydraulic rod directly driven.

[0063] In one embodiment, the movable door 8 is provided with a toothed groove 8a along the extension direction of the slide groove 8b; the door body drive unit 9 includes a transmission gear 91, a drive rack 92 and a door body drive cylinder 93. The transmission gear 91 is rotatably mounted on the detection box 1 and meshes with the toothed groove 8a and the drive rack 92 respectively. The door body drive cylinder 93 is mounted on the detection box 1 and its piston rod is connected to the drive rack 92. When the piston rod extends or retracts, it drives the transmission gear 91 to rotate via the drive rack 92.

[0064] In this embodiment, before the test is performed, the door drive cylinder 93 is activated to pull the drive rack 92 to move. The drive rack 92 drives the transmission gear 91 to rotate. The transmission gear 91 cooperates with the tooth groove 8a, thereby driving the movable door 8 to move and realize the opening and closing of the movable door 8.

[0065] It should be noted that in this design, there are two sets of tooth grooves 8a, located at both ends of the horizontal direction of the movable door 8. Correspondingly, the door drive unit 9 also includes a rotating shaft 94, which is rotatably mounted on the detection box 1. There are two sets of transmission gears 91, which are mounted at both ends of the rotating shaft 94 and mesh with the two sets of tooth grooves 8a respectively.

[0066] To better understand this utility model, the following is combined with... Figures 1 to 5 The technical solution of this utility model is described in detail below:

[0067] In use, before testing, the door drive cylinder 93 is activated to pull the drive rack 92 to move. The drive rack 92 drives a set of transmission gears 91 to rotate, and the two sets of transmission gears 91 rotate synchronously through the rotating shaft 94. While the transmission gears 91 are rotating, the movable door 8 is lifted through the tooth groove 8a to facilitate the insertion of the battery. Then, the door drive cylinder 93 is activated again to push the drive rack 92 to close the movable door 8.

[0068] When the movable door 8 is raised or lowered, the sliding grooves 8b on both sides fit against the outside of the slide rail 11, which can limit the movable door 8 and ensure the stability of the movable door 8 when it is raised or lowered. Then, the fuel cell to be tested is placed on the top of the grid plate, and then the two sets of positioning cylinders 61 are activated at the same time. The two sets of positioning cylinders 61 can push the positioning clamps 7 on both sides to move towards the middle, so that the positioning clamps 7 fit against both sides of the fuel cell to be tested, thereby effectively positioning the fuel cell and preventing the battery from being displaced due to pressure during testing, which would affect the testing effect.

[0069] When testing a fuel cell, if combustion occurs inside the fuel cell, the smoke detector 45 can automatically detect the smoke signal and start the water pump 43. The water pump 43 guides the water inside the water tank 42 into the nozzle through the water pipe 44, spraying the water to quickly extinguish the fire and prevent the fire from growing and causing the fuel cell to explode. The water will then be collected inside the collection chamber 1b through the grid plate.

[0070] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A battery performance testing device, characterized in that, include: Testing box; A partition is provided inside the detection box, dividing the inner cavity of the detection box into a detection chamber and a collection chamber located below the detection chamber. The partition is provided with a channel connecting the detection chamber and the collection chamber. A detection component, located inside the detection box and in the detection chamber, is used to detect battery performance; and The fire extinguishing assembly has a spray end located within the detection chamber, the spray end being used to spray fire extinguishing agent toward the partition.

2. The battery performance testing device according to claim 1, characterized in that, The detection assembly includes a detection pressure plate and a detection drive unit. The detection pressure plate is disposed in the detection cavity and can move closer to and away from the partition. The detection drive unit is drivenly connected to the detection pressure plate and is used to drive the detection pressure plate closer to and away from the partition.

3. The battery performance testing device according to claim 2, characterized in that, The battery performance testing device also includes a fixing cover, which is installed inside the testing cavity and forms a protective cavity with the inner wall of the testing cavity. The outer wall of the fixing cover near the partition is provided with a clearance hole that communicates with the protective cavity. The detection drive unit is a detection hydraulic cylinder. The cylinder body of the detection hydraulic cylinder is located inside the protective cavity, and its hydraulic rod moves through the clearance hole and is connected to the detection pressure plate.

4. The battery performance testing device according to claim 1, characterized in that, The fire extinguishing assembly includes a nozzle, a water tank, a water pump, and a water guide pipe. The nozzle is located inside the detection chamber, with its outlet facing the partition. The water tank is located outside the detection chamber. The inlet of the water pump is connected to the water tank. One end of the water guide pipe is connected to the outlet of the water pump, and the other end is connected to the nozzle. The spraying end is the outlet end of the nozzle.

5. The battery performance testing device according to claim 4, characterized in that, The nozzles are provided in multiple ways, and the multiple nozzles are arranged at intervals along the circumference of the partition. The water guide pipes are provided in multiple ways corresponding to the nozzles. One end of each water guide pipe is connected to the outlet of the water pump, and the other end is connected to the corresponding nozzle.

6. The battery performance testing device according to claim 4, characterized in that, The fire suppression system also includes a smoke detector.

7. The battery performance testing device according to claim 1, characterized in that, The battery performance testing device also includes a positioning drive unit and two sets of positioning clamps. The two sets of positioning clamps are located on the side of the partition near the testing cavity and can move closer to each other and further away from each other. The positioning drive unit is driven to connect with the two sets of positioning clamps and is used to drive the two sets of positioning clamps to move closer to each other and further away from each other.

8. The battery performance testing device according to claim 1, characterized in that, The detection chamber has a placement opening, which is located on the side of the partition away from the collection chamber; The battery performance testing device also includes a movable door, which is movably disposed in the testing box and located at the storage opening, and can open and close the storage opening during its movement.

9. The battery performance testing device according to claim 8, characterized in that, One of the detection box and the movable door is provided with a slide rail, and the other is provided with a slide groove for the slide rail to slide in. The slide groove extends along the layout direction of the detection chamber and the collection chamber. The battery performance testing device also includes a door drive unit, which is connected to the movable door drive unit and is used to drive the movable door to move along the extension direction of the slide groove.

10. The battery performance testing device according to claim 9, characterized in that, The movable door is provided with toothed grooves along the extension direction of the slide groove; The door drive unit includes a transmission gear, a drive rack, and a door drive cylinder. The transmission gear is rotatably mounted on the detection box and meshes with the tooth groove and the drive rack respectively. The door drive cylinder is installed on the detection box, and its piston rod is connected to the drive rack. When the piston rod extends or retracts, it drives the transmission gear to rotate via the drive rack.

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