Adjustable test fixture based on soft package battery

Abstract

The utility model discloses an adjustable test fixture based on a soft package battery, and relates to the technical field of soft package battery testing, the adjustable test fixture comprises a frame on which an object placing plate and a pressing plate are arranged, the pressing plate can perform a closed mode of approaching action and an open mode of separating action towards the object placing plate, the pressing plate is provided with two conductive blocks, and the conductive blocks are arranged on the frame. When the soft package battery is placed on the object placing plate in the mold closing state, the projection of the soft package battery on the object placing plate is located in the mold closing area, and the two conductive blocks are in an abutting conduction state with two electrode tabs on the soft package battery respectively. According to the utility model, through the combination of the frame, the object placing plate and the pressing plate, the soft package battery can be effectively fixed in all directions, the battery is ensured to be stable in the testing process, and after the fixing work is completed, the conductive block on the pressing plate can be tightly contacted with the electrode tab of the battery, so that the conduction of current can be ensured; and a test clamp of subsequent test equipment is electrically connected with the conductive block, so that the test clamp can be electrically connected with the electrode tab.

Description

TECHNICAL FIELD

[0001] The utility model relates to soft -walled battery test technical field, concretely relates to a kind of adjustable test fixture based on soft -walled battery. BACKGROUND

[0002] Aqueous zinc-ion battery is a kind of battery with water as electrolyte and zinc as negative electrode, and its shape and structure vary due to application requirements. Common designs include:

[0003] (1) cylindrical: similar to traditional alkaline batteries, suitable for portable devices.

[0004] (2) square: commonly used in electric vehicles and energy storage systems, facilitating modular design.

[0005] (3) soft -walled battery: using flexible packaging, suitable for thin and light devices.

[0006] (4) button cell: used in small electronic devices, such as watches.

[0007] In flexible packaging (soft -walled) aqueous zinc-ion battery, two parts protruding from one side of the battery are positive and negative tabs, respectively. The positive tab is used to connect the positive material of the battery (such as manganese oxide, vanadium oxide) with the external circuit, and the negative tab is used to connect the negative material of the battery (zinc foil or zinc powder) with the external circuit.

[0008] Currently, when testing aqueous zinc-ion batteries in soft -walled state, special fixtures are usually required to clamp the batteries. These fixtures are usually placed on a storage cabinet for storing test equipment, making it easy for operators to access. After the soft -walled battery is clamped and fixed by the fixture, the operator connects the test equipment to the soft -walled battery, and the corresponding performance test can begin. Specifically, the fixture is usually composed of upper and lower molds. When the fixture is closed, the soft -walled battery is securely clamped between the molds, and the two electrode tabs of the battery are exposed outside the mold, facilitating subsequent connection of test equipment. During testing, the operator uses a test clamp (such as a sawtooth clamp or alligator clamp) to clamp the two electrode tabs, respectively, to test and record the key parameters of the soft -walled battery, such as charge and discharge efficiency and specific capacity.

[0009] However, in actual testing, because the test clamp itself has a certain weight, while the electrode tabs are usually lightweight, thin sheet-like structures, the test clamp will gradually shift downwards under gravity after being clamped onto the electrode tabs. This downward movement pulls on the electrode tabs, causing them to bend and affecting their normal use. Even worse, continuous downward pulling of the test clamp may cause the electrode tabs to shift their connection position on the pouch battery, potentially damaging the internal structure of the pouch battery and ultimately rendering it unusable. This situation not only affects the accuracy of the test results but may also increase testing costs and time consumption.

[0010] To address these issues, we propose an adjustable test fixture for pouch batteries. Utility Model Content

[0011] The purpose of this invention is to solve the problems in the prior art by proposing an adjustable test fixture for pouch batteries. This fixture fully supports the pouch battery and sets a conductive block to electrically abut against the electrode tabs on the pouch battery, so that the test fixture can be electrically connected to the electrode tabs while protecting the pouch battery.

[0012] To solve the above problems, this utility model provides the following technical solution:

[0013] An adjustable test fixture for pouch batteries includes a frame with a placement plate and a pressure plate on it. The pressure plate can move towards the placement plate in a closed mode and away from it in an open mode. Two conductive blocks are provided on the pressure plate so that when the pouch battery is placed on the placement plate in the closed mode, the projection of the pouch battery on the placement plate is located in the closed mode area, and the two conductive blocks are in contact with the two electrode tabs on the pouch battery respectively.

[0014] As a further embodiment of this utility model: two cylindrical bodies are fixedly arranged on the pressure plate, an insulating rod is movably inserted into the cylindrical body, and an elastic element is provided on the cylindrical body and fixedly connected to the insulating rod. The conductive block is fixedly installed on the insulating rod so that when the pressure plate and the placement plate are in a closed mode and the conductive block is in contact with the electrode tab, the elastic element is used to apply a movement tendency to the conductive block toward the electrode tab.

[0015] As a further embodiment of this utility model: the pressure plate is composed of two sets of parallel-arranged combination plates that are movably inserted, and the two cylinders are respectively fixedly installed on the two combination plates so that the distance between the two conductive blocks is adjustable.

[0016] As a further embodiment of this utility model: a movable plate is slidably arranged on the frame, and a slide block for connecting the cylinder is slidably arranged on the movable plate along its length direction. A rotating shaft is rotatably arranged on the movable plate, and the rotating shaft has two threaded sections with opposite threads. The two slide blocks are respectively threaded onto the two threaded sections, so that when the rotating shaft rotates, the two slide blocks can move closer or further apart.

[0017] As a further embodiment of this utility model: the pressure plate is slidably disposed on the frame along the vertical direction, the shelf is fixedly disposed on the frame, and the pressure plate and the shelf are arranged in an up-down manner.

[0018] As a further embodiment of this utility model: the conductive block is provided with an adapter plate for connecting the test clip.

[0019] As a further embodiment of this utility model, the frame is provided with a driving component for driving the moving plate to slide.

[0020] As a further embodiment of this utility model: the driving component includes a threaded rod rotatably mounted on the frame and a threaded sleeve fixedly mounted on the moving plate, wherein the threaded rod and the threaded sleeve are threadedly connected.

[0021] As a further embodiment of this utility model: the elastic element is a return spring, which is located inside the cylinder and its two ends are fixedly connected to the inner wall of the cylinder and the top of the insulating rod, respectively.

[0022] As a further embodiment of this utility model, an L-shaped handle is fixedly installed on the threaded rod.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The fixture has a simple design. Through the combination of frame, shelf and pressure plate, it can effectively fix the soft pack battery in all directions and ensure that the battery remains stable during the test. After the fixing is completed, the conductive block on the pressure plate can make close contact with the battery electrode tabs to ensure that the current can be conducted. The test clamp of the subsequent test equipment is electrically connected to the conductive block, so as to realize the electrical connection between the test clamp and the electrode tabs. This application can not only protect the soft pack battery, but also conveniently connect the electrode tabs to the test equipment, thus improving the efficiency and reliability of the test.

[0025] 2. Through the design of the cylinder and insulating rod, combined with the use of elastic components, the contact pressure between the conductive block and the electrode tab can be automatically adjusted when the pressure plate and the placement plate are closed, ensuring good contact and avoiding excessive pressure, thus extending the service life of the battery and the clamp.

[0026] 3. The pressure plate consists of two sets of parallel combined plates, and the distance between the conductive blocks is adjustable, which allows the fixture to adapt to soft-pack batteries of different sizes, enhancing the versatility and flexibility of the fixture and making it suitable for various testing scenarios.

[0027] 4. The conductive block is equipped with an adapter plate, which facilitates the connection of the test clip, simplifies the installation and disassembly process of the test equipment, improves test efficiency, and reduces operation time. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the cylinder and pressure plate in this utility model. Figure 1 ;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the cylinder and pressure plate in this utility model. Figure 2 .

[0032] In the diagram: 1. Shelf; 2. Pressure plate; 3. Frame; 4. Conductive block; 5. Cylinder; 6. Insulating rod; 7. Elastic element; 8. Moving plate; 9. Slide; 10. Shaft; 11. Adapter plate; 12. Threaded rod; 13. Threaded sleeve; 14. L-shaped handle; a. Test clamp. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1:

[0035] like Figures 1-3As shown, an adjustable test fixture for pouch batteries includes a frame 3 that can be mounted on a cabinet. The frame 3 has a pressure plate 2 on top and a shelf 1 on the bottom. The pressure plate 2 is movably mounted on the frame 3, allowing it to move towards or away from the shelf 1. When the pouch battery is placed on the shelf 1, the approaching movement of the pressure plate 2 towards the shelf 1 can press and limit the pouch battery. The shelf 1 is used to fully support the pouch battery; that is, the projection of the pouch battery on the shelf 1 is located within the pressing area of ​​the pressure plate 2 and the shelf 1. The two electrode tabs on the pouch battery are also supported by the shelf 1. Two conductive blocks 4 are fixedly installed at the bottom of the pressure plate 2. The distance between the two conductive blocks 4 is the same as the distance between the two electrode tabs on the pouch battery, and the conductive blocks 4 are positioned opposite the electrode tabs. Therefore, as the pressure plate 2 presses the pouch battery onto the shelf 1, the conductive blocks 4 move downwards until they contact the electrode tabs, achieving electrical conductivity. Subsequently, simply connecting the test clip a of the testing equipment on the shelf to the conductive blocks 4 establishes an electrical connection between the pouch battery and the testing equipment, facilitating subsequent testing.

[0036] Compared to the existing technology that exposes the electrode tabs outside the fixture, the fixture in this application supports the electrode tabs to prevent them from being dragged during subsequent testing and causing battery damage. At the same time, the conductive block 4 on the fixture is electrically connected to the electrode tabs, so it is only necessary to connect the test clamp a to the conductive block 4 later.

[0037] To facilitate the connection between the test clip a on the testing equipment and the conductive block 4, an adapter piece 11 for connecting the test clip a is provided on the conductive block 4, such as... Figure 1 As shown, the adapter piece 11 is disposed on the side of the conductive block 4. Specifically, the adapter piece 11 can be made of a flexible conductive material, which facilitates multi-angle clamping of the test clamp a.

[0038] During the contact process between the conductive block 4 and the electrode tab, in order to ensure stable contact between the conductive block 4 and the electrode tab, and to prevent the electrode tab from being deformed by pressure, this application fixes two cylindrical bodies 5 on the pressure plate 2. An insulating rod 6 is movably inserted into each cylindrical body 5, and an elastic element 7 is fixedly connected to the insulating rod 6 on each cylindrical body 5. The conductive block 4 is fixedly installed on the insulating rod 6. Due to the design of the insulating rod 6 and the elastic element 7, the conductive block 4 can have a certain amount of vertical displacement. During the subsequent pressing process, since the conductive block 4 is located below the pressure plate 2, it will first contact the electrode tab. As the pressure plate 2 continues to descend, the insulating rod 6 extends and retracts upwards, and the elastic element 7 is compressed until the pressure plate 2 contacts and presses the surface of the soft-pack battery. At this point, the conductive block 4 will be in close contact with the electrode tab under the elastic action of the elastic element 7. Furthermore, due to the presence of the elastic element 7, the pressure exerted by the conductive block 4 on the electrode tab increases slowly, effectively preventing deformation of the electrode tab. Preferably, the elastic element 7 is a return spring, which is located inside the cylinder 5 and its two ends are fixedly connected to the inner wall of the cylinder 5 and the top end of the insulating rod 6, respectively.

[0039] Example 2:

[0040] In order to enable testing of different types of pouch batteries, the distance between the two conductive blocks 4 is made adjustable. Specifically, the pressure plate 2 is configured to be composed of two sets of parallel-arranged combined plates that are movably connected. Therefore, the two cylinders 5 are respectively fixedly installed on the two combined plates. Subsequently, by driving the two combined plates closer to or further apart, the distance between the two conductive blocks 4 can be adjusted. Figures 2 to 3 This can be represented as the two combined plates moving apart, increasing the distance between the two conductive blocks 4. Therefore, in actual testing, the distance between the two conductive blocks 4 can be adjusted to be the same as the distance between the two electrode tabs on the corresponding type of soft-pack battery, ensuring that the conductive blocks 4 and the electrode tabs are positioned opposite each other. Subsequently, the downward movement of the pressure plate 2 will allow the conductive blocks 4 to electrically contact the corresponding electrode tabs, enabling subsequent testing.

[0041] In order to drive the two combined plates to move closer or further apart, this application has a movable plate 8 slidably arranged on the frame 3. The movable plate 8 has a sliding seat 9 for connecting the cylinder 5 slidably arranged along its length direction. The movable plate 8 has a rotating shaft 10 rotatably arranged on it. The rotating shaft 10 has two threaded sections with opposite threads. The two sliding seats 9 are respectively threaded onto the two threaded sections. When the rotating shaft 10 is driven to rotate, the two sliding seats 9 can move closer or further apart, thereby driving the two combined plates to move closer or further apart, and realizing the adjustment of the distance between the two conductive blocks 4.

[0042] In the design of the movable plate 8, in order to realize the up and down movement of the pressure plate 2, a driving component for driving the movable plate 8 to slide is provided on the frame 3. The driving component includes a threaded rod 12 rotatably mounted on the frame 3 and a threaded sleeve 13 fixedly mounted on the movable plate 8. The threaded rod 12 and the threaded sleeve 13 are threadedly connected. An L-shaped handle 14 is fixedly installed on the threaded rod 12. Driving the L-shaped handle 14 to rotate will cause the threaded sleeve 13 to move up or down, thereby realizing the up and down movement of the pressure plate 2.

[0043] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An adjustable test fixture for pouch batteries, characterized in that, The frame (3) includes a shelf (1) and a pressure plate (2) on it. The pressure plate (2) can move towards the shelf (1) in a closed mode and move away from it in an open mode. Two conductive blocks (4) are provided on the pressure plate (2) so that when the soft pack battery is placed on the shelf (1) in the closed mode, the projection of the soft pack battery on the shelf (1) is located in the closed mode area, and the two conductive blocks (4) are in contact with the two electrode tabs on the soft pack battery respectively.

2. The adjustable test fixture for pouch batteries according to claim 1, characterized in that, Two cylinders (5) are fixedly installed on the pressure plate (2). An insulating rod (6) is movably inserted into the cylinder (5), and an elastic element (7) is fixedly connected to the insulating rod (6) on the cylinder (5). The conductive block (4) is fixedly installed on the insulating rod (6). When the pressure plate (2) and the placement plate (1) are in a closed mode and the conductive block (4) is in contact with the electrode tab, the elastic element (7) is used to apply a movement tendency to the conductive block (4) towards the electrode tab.

3. An adjustable test fixture for pouch batteries according to claim 1 or 2, characterized in that, The pressure plate (2) is composed of two sets of parallel-arranged combination plates that are movably connected. The two cylinders (5) are respectively fixedly installed on the two combination plates so that the distance between the two conductive blocks (4) is adjustable.

4. An adjustable test fixture for pouch batteries according to claim 3, characterized in that, A movable plate (8) is slidably arranged on the frame (3). A slide block (9) for connecting the cylinder (5) is slidably arranged on the movable plate (8) along its length direction. A rotating shaft (10) is rotatably arranged on the movable plate (8). The rotating shaft (10) has two threaded sections with opposite threads. The two slide blocks (9) are respectively threaded onto the two threaded sections so that when the rotating shaft (10) rotates, the two slide blocks (9) can move close to or away from each other.

5. An adjustable test fixture for pouch batteries according to claim 1 or 2, characterized in that, The pressure plate (2) is slidably mounted on the frame (3) along the vertical direction, and the shelf (1) is fixedly mounted on the frame (3), with the pressure plate (2) and the shelf (1) arranged vertically.

6. An adjustable test fixture for pouch batteries according to claim 1 or 2, characterized in that, The conductive block (4) is provided with an adapter plate (11) for connecting the test clip (a).

7. An adjustable test fixture for pouch batteries according to claim 1 or 2, characterized in that, The frame (3) is provided with a drive component for driving the movable plate (8) to slide.

8. An adjustable test fixture for pouch batteries according to claim 7, characterized in that, The driving component includes a threaded rod (12) rotatably mounted on the frame (3) and a threaded sleeve (13) fixedly mounted on the movable plate (8), with the threaded rod (12) and the threaded sleeve (13) being threadedly connected.

9. An adjustable test fixture for pouch batteries according to claim 2, characterized in that, The elastic element (7) is a reset spring, which is located inside the cylinder (5) and its two ends are fixedly connected to the inner wall of the cylinder (5) and the top end of the insulating rod (6), respectively.

10. An adjustable test fixture for pouch batteries according to claim 8, characterized in that, An L-shaped handle (14) is fixedly installed on the threaded rod (12).

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