Testing device for square aluminum shell battery

Abstract

The utility model discloses a testing device for a square aluminum shell battery, and belongs to the technical field of battery performance testing. Comprising a fixed bottom plate, two parallel first grooves are formed in one side of the fixed bottom plate in the width direction of the fixed bottom plate, and two parallel second grooves are formed in the other side of the fixed bottom plate in the length direction of the fixed bottom plate; the quick locking clamps, the firing pin frames and the firing pins are connected in sequence, and two groups are provided; the two quick locking clamps are fixed on the two first grooves according to the requirement for the distance between the battery cell tabs, so that the two firing pins can be correspondingly connected to a positive tab and a negative tab of a battery to be tested; and the L-shaped bottom baffle plate slides to be fixed on the second groove after the positive / negative tab of the battery to be tested and the firing pin are locked through the rapid locking clamp, so that the L-shaped side surface is propped against the bottom of the square aluminum shell battery to be tested. The square aluminum shell battery electrochemical performance testing device is suitable for electrochemical performance testing of square aluminum shell batteries of different models, easy to assemble, low in cost, small in size, convenient to move and capable of being suitable for different testing scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of battery performance testing, in particular to a testing device for square aluminum shell batteries. Background Art

[0002] The capacity of square aluminum shell batteries is relatively large compared to soft-pack and cylindrical batteries, generally greater than 50 Ah. And except for blade batteries, the pole ears usually come out from the same side. The above reasons result in a relatively thick thickness of square aluminum shell batteries and the inability of the positive and negative pole columns to be directly connected to electrochemical testing equipment. The conventional method for electrochemical testing of general square aluminum shell batteries is to laser-weld nickel sheets or copper bars to the positive and negative electrodes of the battery respectively, and then fix the test wires of the testing equipment to the welded nickel sheets or copper bars. The above method has the following disadvantages: First, laser welding requires professional equipment and professional capabilities, and non-professionals operating it poses safety hazards; Second, the laser welding may not achieve the expected connection effect, which is related to the capabilities of the operator and has a large uncertainty; Third, the battery may be damaged during the laser welding process; Fourth, the nickel sheet may break or crack due to laser welding during multiple insertions and extractions of the battery. In view of the above situation, there is an urgent need for a battery testing device that is suitable for different models of square aluminum shell batteries, is convenient to use, and reduces safety risks. Summary of the Invention

[0003] In view of the defects of the prior art, the utility model provides an electrochemical testing device for different models of square aluminum shell batteries. This device does not require laser welding of copper bars, is easy to operate, convenient to move, has a small volume, and can enter the constant temperature box with the battery for electrochemical performance testing.

[0004] In order to achieve the above purpose, the utility model provides a testing device for square aluminum shell batteries, including:

[0005] A fixed bottom plate, on one side of which there are two parallel first grooves along its width direction, and on the other side there are two parallel second grooves along its length direction;

[0006] A quick-lock fixture, a striker frame, and a striker are connected in sequence, with a total of two groups; the two quick-lock fixtures are fixed on the two first grooves according to the pole ear spacing requirements of the square aluminum shell battery to be tested, so that the two strikers can be correspondingly connected to the positive pole ear and the negative pole ear of the square aluminum shell battery to be tested;

[0007] The bottom baffle is in an L shape; there are two position-fixing screws at the L-shaped bottom, and the distance between the two position-fixing screws corresponds to the distance between the two second grooves, which is used to, after the positive and negative ears of the square aluminum shell battery to be tested are connected to the striker, make the L-shaped side tightly press and fix against the bottom of the square aluminum shell battery to be tested by sliding the bottom baffle, and fix the bottom baffle on the second groove of the fixed bottom plate through the position-fixing screws.

[0008] Furthermore, the length of the first groove is the width of the fixed bottom plate, and one end of the second groove is located at the edge of the fixed bottom plate.

[0009] Furthermore, there are two sets of parallel screw holes on the bottom plate of the quick locking clamp, and the distance between the two first grooves corresponds to the distance between the two sets of parallel screw holes; it is used to slide and fix the two quick locking clamps on the two first grooves according to the distance between the two ears of the square aluminum shell battery to be tested.

[0010] Furthermore, the quick locking clamp is a push-pull type quick locking clamp.

[0011] Furthermore, the striker frame is a cuboid frame, and there are two symmetric flat plates in its height direction;

[0012] There is a first through hole in the middle position of one side flat plate for connecting with the quick locking clamp, and the movable rod protruding from the front end of the quick locking clamp can pass through the first through hole and is fixed with a nut;

[0013] There is a second through hole in the middle position of the other side flat plate, and the striker passes through the second through hole and is fixed.

[0014] Furthermore, one end of the striker is a striker tip for connecting the positive or negative ear of the square aluminum shell battery to be tested; the other end is fixedly connected to the striker frame; there is also a thread on its outer surface, and when the striker is connected to the striker frame, it is necessary to ensure that the thread on its outer surface is insulated from the striker frame; the electrochemical performance test wire of the test equipment can be sleeved on the thread, and the electrochemical performance test wire can be fixedly connected to the striker through a nut.

[0015] Furthermore, the material of the striker is copper plated with gold.

[0016] The beneficial effects of the present utility model:

[0017] 1. The present utility model is applicable to the electrochemical performance test of square aluminum shell batteries of different models.

[0018] 2. The device of the present utility model is easy to assemble, has a low cost, and can complete the electrochemical test of the square aluminum shell battery without equipment such as a servo motor.

[0019] 3. The utility model is easy to operate. After selecting batteries of different models, adjust the position of the bottom baffle to adapt to the height of the battery, and adjust the distance between the two quick-locking clamps to adapt to the center distance of the battery tabs; after fixing the screws, it can adapt to different battery models.

[0020] 4. After the battery test fixture of the utility model and the battery are assembled, the volume is small, it is convenient to move, and it can be applied to different test scenarios. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the test device for the square aluminum shell battery of the utility model.

[0022] Figure 2 It is a schematic structural diagram of the fixed bottom plate of the utility model.

[0023] Figure 3 It is a schematic structural diagram of the quick-locking clamp of the utility model.

[0024] Figure 4 It is a schematic structural diagram of the striker frame of the utility model.

[0025] Figure 5 It is a schematic structural diagram of the striker of the utility model.

[0026] Figure 6 It is a schematic structural diagram of the bottom baffle of the utility model.

[0027] Figure 7 It is a schematic structural diagram of the square aluminum shell battery to be tested of the utility model. Detailed Embodiment

[0028] The following further introduces the utility model with reference to the drawings and embodiments.

[0029] As Figure 1 shown, the embodiment of the utility model provides a test device for a square aluminum shell battery, including: a fixed bottom plate 1, a quick-locking clamp 2, a striker frame 3, a striker 4 and a bottom baffle 5. The quick-locking clamp 2, the striker frame 3 and the striker 4 are connected in sequence, and there are two groups in total.

[0030] As Figure 2 shown, on one side of the surface of the fixed bottom plate 1, two parallel first grooves 101 are provided along its width direction, and on the other side, two parallel second grooves 102 are provided along its length direction. Both the first groove 101 and the second groove 102 are sliding grooves. The length of the first groove 101 is the width of the fixed bottom plate, and one end of the second groove 102 is located at the edge of the fixed bottom plate, and its length is set as required.

[0031] There are two quick-lock fixtures 2. In the embodiment of the present utility model, a push-pull type quick-lock fixture is adopted, and the model is GH-36020-M. As Figure 3 shown, it includes: a quick-lock fixture fixed base 201, a quick-lock fixture opening and closing handle 202, a quick-lock fixture movable rod 203, and a quick-lock fixture and striker frame fixing thread 204. Two groups of screw holes are provided on the quick-lock fixture fixed base 201, and the distance between the two first grooves 101 corresponds to the distance between the two groups of screw holes. According to the distance between the two pole ears of the square aluminum shell battery 6 to be tested, two quick-lock fixtures 2 are slidably fixed on the first grooves 101 of the fixed base plate 1 by using screws through the two groups of screw holes.

[0032] There are two striker frames 3. As Figure 4 shown, it is a cuboid frame. Each striker frame 3 is provided with two symmetric flat plates 301 in its height direction. A first through hole 302 is provided in the middle position of one side flat plate 301. The movable rod 203 protruding from the front end of the quick-lock fixture 2 passes through the first through hole 302, and the quick-lock fixture and striker frame fixing thread 204 is fixed with nuts before and after the flat plate 301, so that the quick-lock fixture 2 and the striker frame 3 are fixedly connected. A second through hole 303 is provided in the middle position of the other side flat plate 301, and the striker 4 passes through the second through hole 303 and is fixedly connected to the striker frame 3.

[0033] The striker 4. As Figure 5 shown, one end is a striker tip 401, and the tip is used to connect the positive pole ear 601 or the negative pole ear 602 of the square aluminum shell battery 6 to be tested; the other end passes through the second through hole 303 and is fixed. It can be fixed by screws before and after the flat plate 301 in the form of a fixing block; at the same time, a thread 402 is provided on the outer surface of the striker. When the striker 4 is connected to the striker frame 3, it is necessary to ensure that the thread 402 on its outer surface is insulated from the striker frame 3. The electrochemical performance test line of the test equipment can be sleeved on the thread 402, and the thread 402 is locked by a nut to fixedly connect the electrochemical performance test line and the striker. This avoids the method of connecting the positive and negative poles of the battery to the test line after laser welding copper bars respectively.

[0034] The bottom baffle 5. As Figure 6 shown, its shape is L-shaped. Two position fixing screws 501 are provided at the L-shaped bottom, and the distance between them corresponds to the distance between the two second grooves 102. After the positive pole ear 601 and the negative pole ear 602 of the square aluminum shell battery 6 to be tested are respectively connected to the striker 4, by sliding the bottom baffle 5, the L-shaped side is tightly pressed against and fixed to the bottom of the square aluminum shell battery 6 to be tested, and the bottom baffle is fixed on the second groove 102 of the fixed base plate 1 by the position fixing screws.

[0035] According to the distance between the six electrode tabs of the square aluminum shell battery to be tested, the present utility model adjusts the fixed positions of the two quick locking clamps 2 in the first groove 101 to ensure that the two ejector pins 4 can be correspondingly connected to the positive electrode tab 601 and the negative electrode tab 602 of the square aluminum shell battery 6 to be tested; according to the position of the square aluminum shell battery 6 to be tested at this time, the fixed position of the bottom baffle 5 in the second groove 102 is adjusted to ensure that the bottom baffle 5 can be tightly fixed to the height side part of the square aluminum shell battery 6 to be tested, so that the test device can adapt to different battery electrode tab center distances and heights.

[0036] By sleeving and connecting the ejector pin thread 402 with the electrochemical performance test line of the test equipment, it replaces the method of connecting the positive and negative electrodes of the battery with laser-welded copper bars respectively and then connecting with the test line, and the operation is simple.

[0037] At the same time, the present utility model is small in volume and convenient to move, so it can be put into a thermostat together with the battery for electrochemical performance testing.

[0038] The operation method of this test device is specifically as follows:

[0039] First, pass the movable rod 203 of the quick locking clamp 2 through the first through hole 302 of the ejector pin frame 3, and then lock the quick locking clamp and the ejector pin frame fixing thread 204 with a nut to fix the quick locking clamp 2 and the ejector pin frame 3. Pass the ejector pin 4 through the second through hole 303 of the ejector pin frame 3 and fix it on the other side of the ejector pin frame 3; sleeve the electrochemical performance test line of the test equipment on the thread 402 of the ejector pin 4 and lock it with a nut to complete the connection between the test device and the electrochemical performance test equipment. Secondly, adjust the distance between the two quick locking clamps 2 according to the distance between the electrode tabs of the square aluminum shell battery 6 to be tested, and use screws to fix the two groups of screw holes provided on the fixed base 201 of the quick locking clamp 2 to fix the quick locking clamp 2 to the first groove 101, and respectively connect the positive electrode tab 601 and the negative electrode tab 602 of the square aluminum shell battery 6 to be tested to the ejector pin tips 401 of the two ejector pins 4. Then, according to the height of the square aluminum shell battery 6 to be tested, place the bottom baffle 5 on the opposite side of the electrodes of the square aluminum shell battery to be tested, and fix the bottom baffle 5 by adjusting the position fixing screw 501 so that the L-shaped side of the bottom baffle 5 is tightly fixed to the opposite side of the electrodes of the square aluminum shell battery 6 to be tested. Finally, close the quick locking clamp opening and closing handle 202 of the quick locking clamp 2, that is, lock the square aluminum shell battery 6 to be tested to the test device.

[0040] Although the content of the present utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present utility model. After those skilled in the art have read the above content, various modifications and substitutions to the present utility model will be obvious. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims

1. A test device for square aluminum shell batteries, characterized in that: include: A fixed bottom plate, wherein one side of the fixed bottom plate is provided with two parallel first grooves along its width direction, and the other side of the fixed bottom plate is provided with two parallel second grooves along its length direction; The quick locking fixture, the striker frame and the striker are connected in sequence, and there are two groups in total; the two quick locking fixtures are fixed on the two first grooves according to the tab spacing requirements of the square aluminum shell battery to be tested, so that the two strikers can be connected to the positive tab and the negative tab of the square aluminum shell battery to be tested respectively; The bottom baffle is L-shaped; two position fixing screws are provided at the L-shaped bottom, and the spacing between the two position fixing screws corresponds to the spacing between the two second grooves, which is used for sliding the bottom baffle after the positive and negative ears of the square aluminum shell battery to be tested are connected to the striker, so that the L-shaped side surface is tightly fixed to the bottom of the square aluminum shell battery to be tested, and the bottom baffle is fixed to the second groove of the fixed bottom plate by the position fixing screws.

2. The testing device for square aluminum shell batteries according to claim 1, characterized in that: The length of the first groove is equal to the width of the fixed bottom plate, and one end of the second groove is located at the edge of the fixed bottom plate.

3. The testing device for square aluminum shell batteries according to claim 1, characterized in that: Two groups of parallel screw holes are provided on the bottom plate of the quick locking clamp, and the spacing between the two first grooves corresponds to the spacing between the two groups of parallel screw holes; it is used to slide and fix the two quick locking clamps on the two first grooves according to the spacing between the two pole ears of the square aluminum shell battery to be tested.

4. The testing device for square aluminum shell batteries according to claim 1, characterized in that: The quick locking clamp is a push-pull type quick locking clamp.

5. The testing device for square aluminum shell batteries according to claim 1, characterized in that: The striker frame is a rectangular parallelepiped frame, and two symmetrical flat plates are provided in its height direction; A first through hole is provided in the middle of one side of the flat plate for connecting with the quick locking clamp, and a movable rod extending from the front end of the quick locking clamp can pass through the first through hole and be fixed with a nut; A second through hole is provided in the middle of the flat plate on the other side, and the striker passes through the second through hole and is fixed.

6. The testing device for square aluminum shell batteries according to claim 1, characterized in that: One end of the striker is a striker tip, which is used to connect to the positive ear or negative ear of the square aluminum shell battery to be tested; the other end is fixedly connected to the striker frame; a thread is also provided on its outer surface, and when the striker is connected to the striker frame, it is necessary to ensure that the thread on its outer surface is insulated from the striker frame; the electrochemical performance test line of the testing equipment can be sleeved on the thread, and the electrochemical performance test line can be fixedly connected to the striker through a nut.

7. The testing device for square aluminum shell batteries according to claim 1, characterized in that: The striker is made of gold-plated copper.

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