Battery constant pressure testing device
By placing the pressure detection element above the lower pressure plate and the battery in the battery constant pressure testing device, and utilizing the pressure boosting and elastic components, the error problem caused by the gravity of the pressure plate and the battery is solved, thus achieving accuracy and precision in pressure detection.
Patent Information
- Application Number
- CN202423263782.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing constant voltage battery testing devices suffer from errors in setting and adjusting the test pressure due to the gravity of the pressure plate and the battery itself, which affects the test accuracy.
A battery constant pressure testing device was designed, wherein the pressure detection component is set above the lower pressure plate and the battery. The lower pressure plate is driven by the pressure boosting component to apply constant pressure to the battery, and the accuracy of pressure detection is ensured by the use of elastic components and guide rod structure to prevent the influence of gravity error.
It enables accurate detection of the pressure acting on the battery during battery testing, avoiding errors caused by pressure plate and battery gravity, and improving the accuracy of test pressure setting and adjustment.
Smart Images
Figure CN223742694U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of battery testing, in particular to a battery constant pressure testing device. BACKGROUND
[0002] The constant pressure testing of a battery is an important method for evaluating the performance of a battery, which aims to observe and analyze the reaction and performance of the battery by applying a constant voltage. However, the constant pressure testing device currently used is to place the pressure plate and the battery horizontally on the pressure gauge, that is, to install the pressure gauge below the pressure plate and the battery, so that the detection result of the pressure gauge contains not only the pressure it bears, but also the gravity of the pressure plate and the battery itself, which causes the need for manual calculation to subtract the gravity of the pressure plate and the battery itself when setting the pressure, and is prone to problems such as setting and adjusting errors of the testing pressure. CONTENT OF THE UTILITY MODEL
[0003] The present application provides a battery constant pressure testing device, which can prevent errors caused by the gravity of the lower pressure plate and the battery itself from affecting the setting and adjustment of the testing pressure.
[0004] According to the battery constant pressure testing device of the present application, the testing machine frame is provided with a battery supporting plate, at least one constant pressure mechanism, the constant pressure mechanism including a lower pressure plate, a pressure detection piece and a pressure increasing piece, the lower pressure plate being arranged above the battery supporting plate, the output shaft of the pressure increasing piece being connected with the pressure detection piece, and the pressure detection piece being able to drive the lower pressure plate to approach or move away from the battery supporting plate, so that the lower pressure plate applies a constant pressure to the battery.
[0005] In the battery constant pressure testing device, the pressure detection piece is arranged above the lower pressure plate and the battery, and the pressure increasing piece drives the lower pressure plate to pressurize the battery through the pressure detection piece, so that the pressure detection piece can accurately detect the pressure acting on the battery during testing, and prevent errors caused by the gravity of the lower pressure plate and the battery itself from affecting the setting and adjustment of the testing pressure.
[0006] According to some embodiments of the present application, the output shaft of the pressure increasing piece is connected with an upper pressure plate, and the pressure detection piece is arranged between the upper pressure plate and the lower pressure plate.
[0007] According to some embodiments of the present application, an elastic piece is arranged between the lower pressure plate and the pressure detection piece, and after the lower pressure plate applies a preset pressure to the battery, the continuous pushing of the pressure increasing piece and / or the expansion of the battery will drive the elastic piece to deform, so that the lower pressure plate applies a constant pressure to the battery.
[0008] According to some embodiments of the present application, the pressure detection piece includes a pressure gauge, and the pressure gauge is arranged between the upper pressure plate and the elastic piece.
[0009] According to some embodiments of the present application, the pressure detecting member further comprises a movable pressing plate and a guide rod, the lower end of the guide rod is connected with the lower pressing plate, the movable pressing plate and the upper pressing plate are sequentially and slidingly connected on the guide rod from bottom to top, the pressure gauge is abutted between the movable pressing plate and the upper pressing plate, and the elastic member is abutted between the lower pressing plate and the movable pressing plate.
[0010] According to some embodiments of the present application, the elastic member comprises a spring, and the spring is sleeved on the guide rod.
[0011] According to some embodiments of the present application, the pressure increasing member comprises a gas-liquid pressure increasing cylinder, and the output shaft of the gas-liquid pressure increasing cylinder is connected with the pressure detecting member.
[0012] According to some embodiments of the present application, the test rack is provided with a conveying mechanism, and the conveying mechanism is used for moving the battery to make the battery enter or leave between the battery supporting plate and the lower pressing plate.
[0013] According to some embodiments of the present application, the conveying mechanism comprises a conveying belt, a first rotating roller and a second rotating roller, the first rotating roller and the second rotating roller are arranged on the test rack along the direction of battery conveying, the conveying belt is wound around the first rotating roller and the second rotating roller, and the battery supporting plate is arranged between the first rotating roller and the second rotating roller.
[0014] According to some embodiments of the present application, the test rack is provided with a lifting support, the lifting support is provided with a lifting driving member, and the battery supporting plate is connected with the output end of the lifting driving member.
[0015] In summary, the battery constant pressure test device provided by the present application has the following technical effects:
[0016] By arranging the pressure detecting member above the lower pressing plate and the battery, and driving the lower pressing plate to press the battery by the pressure detecting member through the pressure increasing member, the pressure detecting member can accurately detect the pressure acting on the battery during the test, and prevent the errors caused by the gravity of the lower pressing plate and the battery itself from affecting the setting and adjustment of the test pressure. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 FIG. 1 is a structural schematic diagram of a battery constant pressure test device according to an embodiment of the present application;
[0018] Figure 2 FIG. 2 is another structural schematic diagram of a battery constant pressure test device according to an embodiment of the present application;
[0019] Figure 3 FIG. 3 is a structural schematic diagram of a battery constant pressure test device according to another embodiment of the present application; Figure 2A-A direction sectional view of the battery.
[0020] Wherein, the reference signs have the following meanings:
[0021] 1, battery support plate; 2, constant pressure mechanism; 21, lower pressing plate; 22, pressure detection piece; 221, pressure gauge; 222, movable pressing plate; 223, guide rod; 23, pressure increasing piece; 24, upper pressing plate; 25, elastic piece; 251, spring; 3, conveying mechanism; 31, conveying belt; 32, first rotating roller; 33, second rotating roller; 4, lifting support; 5, lifting driving piece; 6, testing rack. DETAILED DESCRIPTION
[0022] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.
[0023] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application.
[0025] Reference is made to Figure 1 , Figure 2 and Figure 3This application discloses a battery constant pressure testing device. The battery constant pressure testing device includes a test frame 6 and at least one constant pressure mechanism 2. In some embodiments, a battery support plate 1 is provided on the test frame 6. The constant pressure mechanism 2 includes a lower pressure plate 21, a pressure detection element 22, and a pressure boosting element 23. The lower pressure plate 21 is disposed above the battery support plate 1. The output shaft of the pressure boosting element 23 is connected to the pressure detection element 22 and can drive the lower pressure plate 21 closer to or further away from the battery support plate 1 through the pressure detection element 22, so that the lower pressure plate 21 applies constant pressure to the battery. Preferably, by disposing the pressure detection element 22 above the lower pressure plate 21 and the battery, and by the pressure boosting element 23 driving the lower pressure plate 21 to apply pressure to the battery through the pressure detection element 22, the pressure detection element 22 can accurately detect the pressure acting on the battery during testing, preventing errors caused by factors such as the weight of the lower pressure plate 21 and the battery itself from affecting the setting and adjustment of the test pressure.
[0026] See Figure 1 , Figure 2 and Figure 3 In some embodiments, the output shaft of the booster 23 is connected to an upper pressure plate 24, and the pressure detection element 22 is disposed between the upper pressure plate 24 and the lower pressure plate 21. Preferably, the booster 23 acts on the pressure detection element 22 through the upper pressure plate 24, so that the pressure detection element 22 drives the lower pressure plate 21. Thus, during the process of applying pressure to the battery, the output shaft of the booster 23 is driven by the upper pressure plate 24 and applies pressure to the pressure detection element 22, so that the booster 23 can uniformly transmit torque to the pressure detection element 22, preventing stress concentration from damaging the pressure detection element 22.
[0027] See Figure 1 , Figure 2 and Figure 3In some embodiments, an elastic element 25 is provided between the lower pressure plate 21 and the pressure detection element 22; after the lower pressure plate 21 applies a preset pressure to the battery, the continued pushing of the pressure boosting element 23 and / or the expansion of the battery will drive the elastic element 25 to deform, so that the lower pressure plate 21 applies a constant pressure to the battery. In this embodiment, when the pressure booster 23 drives the pressure detection member 22 downward, the pressure detection member 22 drives the lower pressure plate 21 to move in a direction close to the battery tray 1 through the elastic member 25, so that the lower pressure plate 21 presses against the battery on the battery tray 1. As the pressure booster 23 moves, the lower pressure plate 21 continuously pressurizes the battery until the lower pressure plate 21 applies a preset pressure to the battery. Then, the elastic member 25 deforms under the continued pushing of the pressure booster 23 to maintain the pressure exerted by the lower pressure plate 21 on the battery unchanged. Furthermore, during the constant pressure test, when the battery expands, the expansion force of the battery can be effectively applied to the elastic member 25 through the lower pressure plate 21, causing the elastic member 25 to deform to maintain the pressure exerted by the lower pressure plate 21 on the battery unchanged, thereby achieving the application of constant pressure to the battery by the lower pressure plate 21 during the test.
[0028] See Figure 1 , Figure 2 and Figure 3 In some embodiments, the pressure detection element 22 may be composed of any one or more components such as a pressure gauge 221 and a pressure sensor; in this embodiment, the pressure detection element 22 includes a pressure gauge 221, which is disposed between the upper pressure plate 24 and the elastic member 25. Preferably, by placing the pressure gauge 221 above the lower pressure plate 21, the elastic member 25, and the battery, and by having the pressure boosting member 23 drive the lower pressure plate 21 to apply pressure to the battery through the pressure gauge 221, the pressure detection element 22 can accurately detect the pressure acting on the battery during testing, preventing errors caused by factors such as the weight of the lower pressure plate 21, the elastic member 25, and the battery itself from affecting the setting and adjustment of the test pressure.
[0029] See Figure 1 , Figure 2 and Figure 3In some embodiments, the pressure detection element 22 includes a pressure gauge 221, a movable pressure plate 222, and a guide rod 223. The lower end of the guide rod 223 is connected to the lower pressure plate 21. The movable pressure plate 222 and the upper pressure plate 24 are sequentially slidably connected to the guide rod 223 from bottom to top. The pressure gauge 221 abuts against the movable pressure plate 222 and the upper pressure plate 24. The elastic element 25 abuts against the lower pressure plate 21 and the movable pressure plate 222. Optionally, the upper pressure plate 24 is fixedly connected to the output shaft of the pressure booster 23. This prevents the weight of the upper pressure plate 24 from acting on the pressure gauge 221. At the same time, the movable pressure plate 222, the lower pressure plate 21, the elastic element 25, and the battery are located below the pressure gauge 221, preventing errors caused by the weight of the lower pressure plate 21, the elastic element 25, and the battery itself from affecting the setting and adjustment of the test pressure. Optionally, during testing, the pressurizing member 23 drives the upper pressure plate 24, the pressure detection member 22, the elastic member 25, and the lower pressure plate 21 to move in a direction close to the battery tray 1, so that the lower pressure plate 21 presses against the battery on the battery tray 1. As the pressurizing member 23 moves, the lower pressure plate 21 continuously pressurizes the battery until it applies a preset pressure to the battery. Then, the continued pushing of the pressurizing member 23 drives the upper pressure plate 24 to move downward along the guide rod 223. The upper pressure plate 24 effectively continues to push against the pressure gauge 221, preventing any misalignment between the upper pressure plate 24 and the pressure gauge 221. This allows the pressure gauge 221 to accurately detect the pressure acting on the battery during the constant pressure test. Simultaneously, the pressure gauge 221 drives the movable pressure plate 222 to move downwards along the guide rod 223, enabling the movable pressure plate 222 to effectively continue to push against the elastic member 25. This causes the elastic member 25 to deform, allowing the lower pressure plate 21 to apply constant pressure to the battery.
[0030] See Figure 1 , Figure 2 and Figure 3In some embodiments, the elastic element 25 can be any elastic component, such as a spring 251, an elastic link, and a torsion spring; preferably, the elastic element 25 includes a spring 251, which is sleeved on the guide rod 223. Thus, by sleeved on the guide rod 223 and abutting between the lower pressure plate 21 and the movable pressure plate 222, the movable pressure plate 222 directly transmits power to the lower pressure plate 21 through the spring 251, causing the lower pressure plate 21 to move downward or pressurize the battery. After the lower pressure plate 21 applies a preset pressure to the battery, the spring 251 can deform in time under the combined action of the movable pressure plate 222 and the lower pressure plate 21, so that the lower pressure plate 21 applies a constant pressure to the battery. Furthermore, when the battery expands, the expansion force of the battery can effectively act on the spring 251 through the lower pressure plate 21, driving the elastic element 25 to deform, so as to keep the pressure of the lower pressure plate 21 acting on the battery constant.
[0031] See Figure 1 , Figure 2 and Figure 3 In some embodiments, the pressure booster 23 includes a pneumatic-hydraulic booster cylinder, the output shaft of which is connected to the pressure detection element 22. Preferably, the pneumatic-hydraulic booster cylinder is used as the pressure booster 23 so that its operation is faster and more stable than that of a conventional cylinder. Furthermore, the pneumatic-hydraulic booster cylinder does not require additional control devices like those needed in a pure hydraulic system motor when continuously pressurizing or stopping, thereby improving the overall efficiency of the system.
[0032] See Figure 1 , Figure 2 and Figure 3 In some embodiments, the test frame 6 is equipped with a conveying mechanism 3, which is used to transfer batteries so that they enter or leave between the battery tray 1 and the lower pressure plate 21. Optionally, the conveying mechanism 3 may consist of a multi-axis robotic arm, which clamps and transfers the battery between the battery tray 1 and the lower pressure plate 21 for constant pressure testing. After the test, the multi-axis robotic arm clamps and removes the battery. Alternatively, the conveying mechanism 3 may consist of a clamp and a linear motor. The clamp holds the battery, and the linear motor drives the clamp to transfer the battery between the battery tray 1 and the lower pressure plate 21 for constant pressure testing. After the test, the clamp holds the battery, and the linear motor drives the clamp to remove the battery, thereby achieving automatic loading and unloading of materials without manual operation and improving testing efficiency.
[0033] See Figure 1 , Figure 2 and Figure 3In some embodiments, the conveying mechanism 3 includes a conveyor belt 31, a first roller 32, and a second roller 33. The first roller 32 and the second roller 33 are arranged on the test frame 6 along the battery conveying direction. The conveyor belt 31 wraps around the first roller 32 and the second roller 33. The battery tray 1 is disposed between the first roller 32 and the second roller 33. That is, the first roller 32, the battery tray 1, and the second roller 33 are arranged sequentially on the test frame 6 along the battery conveying direction, and the first roller 32, the battery tray 1, and the second roller 33 are all disposed in the inner ring of the conveyor belt 31. The first roller 32 and the second roller 33 abut against the conveyor belt 31 to drive the conveyor belt 31 to rotate, thereby transferring the battery. During the loading process, the battery is conveyed to the conveyor belt 31 from the outside, and the conveyor belt 31 transfers the battery between the battery tray 1 and the lower pressure plate 21 for constant pressure testing. After the test is completed... Then, the battery is removed by the conveyor belt 31, realizing automatic loading and unloading of materials without manual operation, thus improving testing efficiency. Optionally, either the first roller 32 or the second roller 33 can be the driving roller, and the other can be the driven roller. In this way, the first roller 32 and the second roller 33 can jointly drive the conveyor belt 31 to rotate. Optionally, the conveying mechanism 3 may also include a driving roller and an adjusting roller. The adjusting roller is set in the inner ring of the conveyor belt 31, and the adjusting roller can drive the conveyor belt 31 to abut against the driving roller, so that the driving roller drives the conveyor belt 31 to rotate, thereby realizing the transfer of the battery.
[0034] See Figure 1 , Figure 2 and Figure 3 In some embodiments, the test frame 6 is provided with a lifting bracket 4, and the lifting bracket 4 is provided with a lifting drive 5. The battery tray 1 is connected to the output end of the lifting drive 5, and the lifting drive 5 is used to drive the battery tray 1 closer to or away from the lower pressure plate 21. Preferably, when transferring the battery, the lifting drive 5 drives the battery tray 1 to move away from the lower pressure plate 21, so that there is a gap between the battery tray 1 and the conveyor belt 31, preventing the battery tray 1 and the conveyor belt 31 from rubbing against each other and avoiding wear, while ensuring that the conveyor belt 31 can smoothly transfer the battery. When the conveyor belt 31 moves the battery to directly below the lower pressure plate 21, the lifting drive 5 drives the battery tray 1 to move closer to the lower pressure plate 21, so that the battery tray 1 supports the battery for constant pressure testing.
[0035] See Figure 1 ,Figure 2 and Figure 3 Figure 1 Figure 2 Figure 3 In some embodiments, there are multiple constant pressure mechanisms 2, arranged above the battery tray 1 along the battery conveying direction. Multiple batteries are sequentially placed onto the conveyor belt 31 by an external conveying device or manually. The conveyor belt 31 then moves the batteries to below the lower pressure plate 21 of the corresponding constant pressure mechanism 2. Optionally, a sensor can be installed below the lower pressure plate 21 of each constant pressure mechanism 2 to detect whether the battery is in position. Then, the lifting drive 5 drives the battery tray 1 to move along the direction close to the lower pressure plate 21, so that the battery tray 1 supports the battery. At the start of the test, the gas-liquid booster cylinder drives the upper pressure plate 24, the pressure detection element 22, the spring 251, and the lower pressure plate 21 to move towards the battery tray 1, so that the lower pressure plate 21 presses against the battery on the battery tray 1. As the gas-liquid booster cylinder moves, the lower pressure plate 21 continuously pressurizes the battery until it applies a preset pressure to the battery. Then, the continued pushing of the gas-liquid booster cylinder drives the upper pressure plate 24 to move downward along the guide rod 223, so that the upper pressure plate 24 continues to push against the pressure gauge 221, enabling the pressure gauge 221 to accurately detect the pressure acting on the battery during the constant pressure test. The pressure of the battery is simultaneously controlled by the pressure gauge 221, which drives the movable pressure plate 222 to move downward along the guide rod 223. This allows the movable pressure plate 222 to effectively continue pushing against the spring 251, thereby causing the spring 251 to deform and maintain a constant pressure exerted by the lower pressure plate 21 on the battery. Furthermore, during the constant pressure test, when the battery expands, the expansion force of the battery can be effectively applied to the elastic element 25 through the lower pressure plate 21, causing the elastic element 25 to deform and maintain a constant pressure exerted by the lower pressure plate 21 on the battery. This achieves the goal of applying a constant pressure to the battery by the lower pressure plate 21 during the test. After the test is completed, the lifting drive 5 drives the battery tray 1 to move away from the lower pressure plate 21, so that there is a gap between the battery tray 1 and the conveyor belt 31, preventing the battery tray 1 and the conveyor belt 31 from rubbing against each other. Then, the multiple batteries are removed at once by the conveyor belt 31, which fully optimizes the efficiency of constant pressure test. During the test, the movable pressure plate 222, the lower pressure plate 21, the elastic element 25 and the battery are located below the pressure gauge 221, preventing the error caused by the weight of the lower pressure plate 21, the elastic element 25 and the battery itself from affecting the setting and adjustment of the test pressure.
[0036] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.
Claims
1. A battery constant voltage stress testing device, characterized by, The application relates to a battery testing rack. The battery testing rack comprises a testing rack (6), a battery supporting plate (1) arranged on the testing rack (6), at least one constant pressure mechanism (2) comprising a lower pressing plate (21), a pressure detecting piece (22) and a pressure increasing piece (23), the lower pressing plate (21) being arranged above the battery supporting plate (1), the output shaft of the pressure increasing piece (23) being connected with the pressure detecting piece (22), and the lower pressing plate (21) being driven to approach or move away from the battery supporting plate (1) by the pressure detecting piece (22) so that the lower pressing plate (21) applies a constant pressure to the battery. The output shaft of the pressure increasing piece (23) is connected with an upper pressing plate (24), and the pressure detecting piece (22) is arranged between the upper pressing plate (24) and the lower pressing plate (21). An elastic piece (25) is arranged between the lower pressing plate (21) and the pressure detecting piece (22). After the lower pressing plate (21) applies a preset pressure to the battery, the continuous pushing of the pressure increasing piece (23) and / or the expansion of the battery will drive the elastic piece (25) to deform so that the lower pressing plate (21) applies a constant pressure to the battery.
2. The battery constant voltage stress testing device of claim 1, wherein: The pressure detecting piece (22) comprises a pressure gauge (221) arranged between the upper pressing plate (24) and the elastic piece (25).
3. The battery constant voltage stress testing device of claim 2, wherein: The pressure detecting piece (22) further comprises a movable pressing plate (222) and a guide rod (223), the lower end of the guide rod (223) being connected with the lower pressing plate (21), the movable pressing plate (222) and the upper pressing plate (24) being sequentially and slidingly connected on the guide rod (223) from bottom to top, the pressure gauge (221) being abutted between the movable pressing plate (222) and the upper pressing plate (24), and the elastic piece (25) being abutted between the lower pressing plate (21) and the movable pressing plate (222). The elastic piece (25) comprises a spring (251) sleeved on the guide rod (223).
4. The battery constant pressure force testing device of claim 3, wherein: The pressure increasing piece (23) comprises a gas-liquid pressure increasing cylinder, and the output shaft of the gas-liquid pressure increasing cylinder is connected with the pressure detecting piece (22).
5. The battery constant voltage stress testing device of claim 4, wherein: The testing rack (6) is provided with a conveying mechanism (3) for moving the battery so that the battery enters or leaves the space between the battery supporting plate (1) and the lower pressing plate (21).
6. The battery constant voltage stress testing device of claim 5, wherein: The conveying mechanism (3) comprises a conveying belt (31), a first rotating roller (32) and a second rotating roller (33), the first rotating roller (32) and the second rotating roller (33) being arranged on the testing rack (6) along the direction of battery conveying, the conveying belt (31) being looped around the first rotating roller (32) and the second rotating roller (33), and the battery supporting plate (1) being arranged between the first rotating roller (32) and the second rotating roller (33).
7. The battery constant pressure testing device of any one of claims 1-6, wherein: The testing rack (6) is provided with a lifting support (4), the lifting support (4) is provided with a lifting driving piece (5), and the battery supporting plate (1) is connected with the output end of the lifting driving piece (5).
8. The battery constant pressure testing device of any one of claims 1-6, wherein: 9. The battery constant voltage stress testing device of claim 8, wherein: 10. The battery constant voltage stress testing device of claim 9, wherein: