Lithium battery test fixture

Abstract

The utility model discloses a lithium battery test fixture, which relates to the technical field of lithium battery test fixtures, and comprises a clamping assembly and a supporting and positioning assembly, wherein the clamping assembly consists of an insulating base, a guide rail, a fixed seat and a sliding seat; the supporting and positioning assembly comprises a first limiting unit, a second limiting unit and a linkage unit. The first limiting unit and the second limiting unit are respectively used for supporting the lower parts of the two ends of the battery; and the linkage unit is used for realizing synchronous up-and-down movement operation of the first limiting unit and the second limiting unit. According to the utility model, the supporting and positioning assembly is arranged, and the installation and downward movement of the lithium battery can be limited and supported through the first supporting seat and the second supporting seat, so that the phenomenon that the positive and negative electrodes of the lithium battery deviate from the positive electrode clamping end and the negative electrode clamping end due to overlarge downward movement distance during installation of the lithium battery is avoided; the positive electrode and the negative electrode of the lithium battery are automatically aligned with the positive electrode clamping end and the negative electrode clamping end, and stable connection of the detection circuit is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery testing fixtures, in particular to a lithium battery testing fixture. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. During the production and processing of lithium batteries, the final lithium battery products need to undergo corresponding testing operations;

[0003] There are many types of lithium battery test fixtures depending on the type of battery. Among them, there is a slide-type adjustable battery test fixture, which is mainly used for auxiliary testing of cylindrical lithium batteries. This test fixture includes a fixed contact terminal (positive contact terminal) and a moving contact terminal (negative contact terminal). The distance between the two contact terminals can be achieved by adjusting the position of the moving contact terminal, so that it can adapt to the detection operation of cylindrical lithium batteries of different lengths.

[0004] However, in actual operation, since there is no structure to limit or support the battery under the two contact terminals, the battery and the contact terminals need to be manually aligned during the test. In a large number of tests, this operation will reduce the test efficiency. In order to further improve the test efficiency of lithium batteries, a lithium battery test fixture is provided. Summary of the invention

[0005] The purpose of the utility model is to provide a lithium battery testing fixture in order to solve the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery test fixture, comprising a clamping assembly consisting of an insulating base, a guide rail, a fixed seat, and a slide seat, wherein the guide rail and the fixed seat are fixedly installed on the top of the insulating base, and the fixed seat is distributed at one end of the guide rail, and the slide seat is slidably connected to the outside of the guide rail and distributed at the other end of the guide rail, and a support positioning assembly is distributed on one side of the fixed seat and the slide seat, and the support positioning assembly is used to provide limited support for the bottom of the lithium battery;

[0007] The support and positioning assembly includes a first limiting unit, a second limiting unit, and a linkage unit;

[0008] The first limiting unit and the second limiting unit are respectively used to support the lower sides of the two end terminals of the battery;

[0009] The linkage unit is used to realize the synchronous up and down movement operation of the first limiting unit and the second limiting unit.

[0010] As a further solution of the utility model: the clamping assembly further includes a first locking bolt, an L-shaped mounting plate, a positive electrode clamping end, a negative electrode clamping end, and a metal connector;

[0011] The first locking bolt is threadedly connected to the outside of the slide seat and penetrates through the first locking bolt to fit tightly with the side of the guide rail, so as to fix the position of the slide seat;

[0012] The L-shaped mounting pieces are symmetrically fixedly mounted on the top of the fixed seat and the sliding seat, the positive electrode clamping end and the negative electrode clamping end are respectively fixedly mounted on one side of the two L-shaped mounting pieces and penetrate the other side of the L-shaped mounting pieces, the central axes of the positive electrode clamping end and the negative electrode clamping end are aligned, and the positive electrode clamping end and the negative electrode clamping end are connected to the side away from each other with a metal connector for connecting the wiring of the external detection equipment;

[0013] The positive electrode clamping end and the negative electrode clamping end are respectively attached to the positive and negative electrodes of the lithium battery to clamp the lithium battery and connect the lithium battery to the circuit of the external detection equipment.

[0014] As a further solution of the utility model: the first limiting unit includes a first T-shaped sliding groove, a first limiting sliding block, a first supporting seat, and a second locking bolt;

[0015] The first T-shaped slide groove is opened at the top of the fixing seat and penetrates to one side of the first T-shaped slide groove, and the first limit slider is vertically slidably connected to the inner side of the first T-shaped slide groove and extends to one side of the outer side of the fixing seat;

[0016] The first support seat is distributed at one end of the fixed seat close to the sliding seat and is located directly below the positive electrode clamping end. The side surface of the first support seat is fixedly connected to the first support seat, and the first support seat is used to support the lower side of one end of the lithium battery;

[0017] The second locking bolt is threadedly connected to one side of the first limiting slider and passes through the first limiting slider to fit tightly with the inner side of the first T-shaped sliding groove, so as to fix the vertical height of the first limiting slider.

[0018] As a further solution of the present invention: the second limiting unit includes a second T-shaped slide groove, a second limiting slider, and a second support seat;

[0019] The second T-shaped slide groove is opened at the top of the slide seat and penetrates to one side of the slide seat, and the second limit slider is vertically slidably connected to the inner side of the second T-shaped slide groove and extends to the outer side of the first locking bolt;

[0020] The second support seat is distributed at one end of the slide seat close to the fixed seat and is located directly below the negative electrode clamping end. The side surface of the second support seat is fixedly connected to the second limiting slider, and the second support seat is used to support the lower side of the other end of the lithium battery.

[0021] As a further solution of the utility model: the linkage unit includes a linkage guide rod, a through hole, and a vertical slot;

[0022] The linkage guide rod is fixed to one end of the first support seat, the through hole is opened at one end of the second support seat and passes through the other end of the second support seat, and the vertical groove is opened at one end of the slide seat and passes through the other end of the slide seat;

[0023] The linkage guide rod passes through the through hole and the vertical groove in sequence, and the synchronous up and down movement of the first support seat and the second support seat is realized through the sleeve connection between the linkage guide rod and the through hole without affecting the horizontal movement of the second support seat. The vertical groove is used to provide space for the up and down movement of the linkage guide rod without affecting the horizontal movement of the slide seat.

[0024] As a further solution of the utility model: the tops of the first support seat and the second support seat are formed with V-shaped grooves, and the center lines of the V-shaped grooves are aligned with the center lines of the positive electrode clamping end and the negative electrode clamping end in the vertical direction.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] By setting a support and positioning component, the first support seat and the second support seat can be used to limit and support the installation downward movement of the lithium battery, thereby avoiding the phenomenon that the positive and negative electrodes of the lithium battery and the positive electrode clamping end and the negative electrode clamping end are offset due to the lithium battery moving downward too far during installation. The positive and negative electrodes of the lithium battery are automatically aligned with the positive electrode clamping end and the negative electrode clamping end, thereby ensuring the stable connection of the detection circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 This is a schematic diagram of the state of the utility model when no lithium battery is placed;

[0029] Figure 3 It is a schematic diagram of the disassembled state of the slide seat and the slide rail of the utility model;

[0030] Figure 4 It is a top view of the utility model.

[0031] In the figure: 1. Clamping assembly; 101. Insulating base; 102. Guide rail; 103. Fixed seat; 104. Sliding seat; 105. First locking bolt; 106. L-shaped mounting plate; 107. Positive electrode clamping end; 108. Negative electrode clamping end; 109. Metal connector; 2. Support positioning assembly; 201. First T-shaped slide groove; 202. First limiting slider; 203. First supporting seat; 204. Second locking bolt; 205. Second T-shaped slide groove; 206. Second limiting slider; 207. Second supporting seat; 208. Linkage guide rod; 209. Through hole; 210. Vertical groove; 3. Lithium battery. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figures 1 to 4 In an embodiment of the utility model, a lithium battery test fixture includes a clamping assembly 1 composed of an insulating base 101, a guide rail 102, a fixed seat 103, and a slide seat 104. The guide rail 102 and the fixed seat 103 are fixedly installed on the top of the insulating base 101, and the fixed seat 103 is distributed at one end of the guide rail 102. The slide seat 104 is slidably connected to the outside of the guide rail 102 and is distributed at the other end of the guide rail 102. A support positioning assembly 2 is distributed on one side of the fixed seat 103 and the slide seat 104. The support positioning assembly 2 is used to provide limited support for the bottom of the lithium battery;

[0034] The supporting and positioning assembly 2 includes a first limiting unit, a second limiting unit, and a linkage unit; the first limiting unit and the second limiting unit are respectively used to support the lower sides of the two ends of the battery; the linkage unit is used to realize the synchronous up and down movement operation of the first limiting unit and the second limiting unit;

[0035] The clamping assembly 1 further includes a first locking bolt 105, an L-shaped mounting plate 106, a positive electrode clamping end 107, a negative electrode clamping end 108, and a metal connector 109;

[0036] The first locking bolt 105 is threadedly connected to the outside of the slide 104 and penetrates through the first locking bolt 105 to fit tightly with the side of the guide rail 102, so as to fix the position of the slide 104;

[0037] The L-shaped mounting pieces 106 are symmetrically fixedly mounted on the top of the fixing seat 103 and the sliding seat 104, the positive electrode clamping end 107 and the negative electrode clamping end 108 are respectively fixedly mounted on one side of the two L-shaped mounting pieces 106 and penetrate the other side of the L-shaped mounting pieces 106, the central axes of the positive electrode clamping end 107 and the negative electrode clamping end 108 are aligned, and the side of the positive electrode clamping end 107 and the negative electrode clamping end 108 away from each other is connected with a metal connector 109 for connecting the wiring of the external detection equipment;

[0038] The positive electrode clamping end 107 and the negative electrode clamping end 108 are respectively attached to the positive and negative electrodes of the lithium battery 3 to clamp the lithium battery 3 and connect the lithium battery 3 to the circuit of the external detection equipment;

[0039] The first limiting unit includes a first T-shaped sliding groove 201, a first limiting sliding block 202, a first supporting seat 203, and a second locking bolt 204;

[0040] The first T-shaped slot 201 is opened at the top of the fixed seat 103 and penetrates to one side of the first T-shaped slot 201, the first limit slider 202 is vertically slidably connected to the inner side of the first T-shaped slot 201 and extends to the outer side of the fixed seat 103; the first support seat 203 is distributed at one end of the fixed seat 103 close to the slide seat 104 and is located directly below the positive electrode clamping end 107, the side of the first support seat 203 is fixedly connected to the first support seat 203, and the first support seat 203 is used to support the lower side of one end of the lithium battery 3; the second locking bolt 204 is threadedly connected to one side of the first limit slider 202 and penetrates the first limit slider 202 to fit tightly with the inner side of the first T-shaped slot 201, and is used to fix the vertical height of the first limit slider 202;

[0041] The second limiting unit includes a second T-shaped slide groove 205, a second limiting slider 206, and a second supporting seat 207;

[0042] The second T-shaped slide groove 205 is opened at the top of the slide seat 104 and penetrates to one side of the slide seat 104. The second limiting slider 206 is vertically slidably connected to the inner side of the second T-shaped slide groove 205 and extends to the outer side of the first locking bolt 105.

[0043] The second support seat 207 is distributed at one end of the slide seat 104 close to the fixed seat 103 and is located directly below the negative electrode clamping end 108. The side of the second support seat 207 is fixedly connected to the second limit slider 206, and the second support seat 207 is used to support the lower side of the other end of the lithium battery 3;

[0044] The linkage unit includes a linkage guide rod 208, a through hole 209, and a vertical slot 210;

[0045] The linkage guide rod 208 is fixed to one end of the first support seat 203, the through hole 209 is opened at one end of the second support seat 207 and passes through the other end of the second support seat 207, and the vertical groove 210 is opened at one end of the slide seat 104 and passes through the other end of the slide seat 104;

[0046] The linkage guide rod 208 passes through the through hole 209 and the vertical groove 210 in sequence. The linkage guide rod 208 and the through hole 209 are connected to each other to realize the synchronous up and down movement of the first support seat 203 and the second support seat 207 without affecting the horizontal movement of the second support seat 207. The vertical groove 210 is used to provide space for the up and down movement of the linkage guide rod 208 without affecting the horizontal movement of the slide seat 104.

[0047] In this embodiment: when the device is in use, the connecting wires of the external detection device are respectively fixed to the two metal connectors 109 by welding. When the lithium battery 3 is tested, the operation steps are as follows:

[0048] The first step is to adjust the position of the negative electrode clamping end 108 according to the length of the lithium battery 3 to be tested, and release the lock between the slide 104 and the guide rail 102 by loosening the first locking bolt 105, and then push the slide 104 to move horizontally along the track of the guide rail 102. When the distance between the negative electrode clamping end 108 and the positive electrode clamping end 107 matches the length of the lithium battery 3 to be tested, tighten the first locking bolt 105 (it should be noted that a horizontal scale for judging the distance between the negative electrode clamping end 108 and the positive electrode clamping end 107 is installed on the top of the insulating base 101);

[0049] The second step is to adjust the height of the first support seat 203 and the second support seat 207 according to the radius of the lithium battery 3, and release the lock between the first limit slider 202 and the fixed seat 103 by loosening the second locking bolt 204, and then push the first limit slider 202 to move vertically along the track of the first T-shaped slide groove 201. At this time, the first limit slider 202 drives the first support seat 203 to move synchronously, and the first support seat 203 drives the second support seat 207 to move synchronously through the linkage guide rod 208. When the distances between the first support seat 203, the second support seat 207 and the positive electrode clamping end 107 and the negative electrode clamping end 108 match the radius of the lithium battery 3, the second locking bolt 204 can be tightened;

[0050] The third step is to install the lithium battery 3 to be tested between the positive electrode clamping end 107 and the negative electrode clamping end 108. At this time, the lithium battery 3 to be tested can be tilted so that the positive electrode faces and fits the positive electrode clamping end 107. Then, the negative end of the lithium battery 3 to be tested is pressed downward against the negative electrode clamping end 108 (it should be noted that the negative electrode clamping end 108 has a telescopic function, which is an existing structure. Since this solution only improves the structure of the outer side of the clamp, the telescopic structure of the negative electrode clamping end 108 is not described in detail). The negative electrode clamping end 108 is forced to shrink, so that the lithium battery 3 to be tested is stuck in a horizontal state as a whole. It is connected between the positive electrode clamping end 107 and the negative electrode clamping end 108, and at the same time, the bottom of the lithium battery 3 is attached to the first support seat 203 and the second support seat 207. The first support seat 203 and the second support seat 207 can be used to limit and support the installation downward movement of the lithium battery 3, so as to avoid the phenomenon that the positive and negative electrodes of the lithium battery 3 and the positive electrode clamping end 107 and the negative electrode clamping end 108 are offset due to the downward movement distance of the lithium battery 3 being too large during installation, and the positive and negative electrodes of the lithium battery 3 are automatically aligned with the positive electrode clamping end 107 and the negative electrode clamping end 108, thereby ensuring the stable connection of the detection circuit.

[0051] Please refer to Figures 1 to 4A V-shaped groove is formed on the top of the first support seat 203 and the second support seat 207, and the center line of the V-shaped groove is aligned with the center line of the positive electrode clamping end 107 and the negative electrode clamping end 108 in the vertical direction.

[0052] In this embodiment: the V-shaped groove can be used to stably support lithium batteries 3 of different diameters, and at the same time, the center line of the lithium battery 3 is automatically aligned with the center line of the positive clamping end 107 and the negative clamping end 108, that is, the positive and negative electrodes of the lithium battery 3 are automatically aligned with the positive clamping end 107 and the negative clamping end 108.

[0053] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lithium battery test fixture, comprising a clamping assembly (1) consisting of an insulating base (101), a guide rail (102), a fixed seat (103), and a slide seat (104), wherein the guide rail (102) and the fixed seat (103) are fixedly mounted on the top of the insulating base (101), and the fixed seat (103) is distributed at one end of the guide rail (102), and the slide seat (104) is slidably connected to the outside of the guide rail (102) and is distributed at the other end of the guide rail (102), characterized in that: A support and positioning assembly (2) is provided on one side of the fixed seat (103) and the sliding seat (104), and the support and positioning assembly (2) is used to provide position limiting support for the bottom of the lithium battery; The support positioning assembly (2) comprises a first limiting unit, a second limiting unit, and a linkage unit; The first limiting unit and the second limiting unit are respectively used to support the lower sides of the two end terminals of the battery; The linkage unit is used to realize the synchronous up and down movement operation of the first limiting unit and the second limiting unit.

2. A lithium battery testing fixture according to claim 1, characterized in that: The clamping assembly (1) further comprises a first locking bolt (105), an L-shaped mounting plate (106), a positive electrode clamping end (107), a negative electrode clamping end (108), and a metal connector (109); The first locking bolt (105) is threadedly connected to the outside of the slide seat (104) and penetrates through the first locking bolt (105) to fit tightly with the side surface of the guide rail (102), so as to fix the position of the slide seat (104); The L-shaped mounting plate (106) is symmetrically fixedly mounted on the top of the fixing seat (103) and the sliding seat (104); the positive electrode clamping end (107) and the negative electrode clamping end (108) are respectively fixedly mounted on one side of the two L-shaped mounting plates (106) and penetrate the other side of the L-shaped mounting plate (106); the central axes of the positive electrode clamping end (107) and the negative electrode clamping end (108) are aligned; and the sides of the positive electrode clamping end (107) and the negative electrode clamping end (108) that are away from each other are connected with a metal connector (109) for connecting the wiring of an external detection device; The positive electrode clamping end (107) and the negative electrode clamping end (108) are respectively attached to the positive and negative electrodes of the lithium battery (3) to clamp the lithium battery (3) and to connect the lithium battery (3) to an external detection device.

3. A lithium battery testing fixture according to claim 2, characterized in that: The first limiting unit comprises a first T-shaped sliding groove (201), a first limiting sliding block (202), a first supporting seat (203), and a second locking bolt (204); The first T-shaped slide groove (201) is opened at the top of the fixing seat (103) and penetrates to one side of the first T-shaped slide groove (201); the first limit slider (202) is vertically slidably connected to the inner side of the first T-shaped slide groove (201) and extends to the outer side of the fixing seat (103); The first support seat (203) is distributed at one end of the fixed seat (103) close to the sliding seat (104) and is located directly below the positive electrode clamping end (107); the side surface of the first support seat (203) is fixedly connected to the first support seat (203), and is used to support the lower side of one end of the lithium battery (3) through the first support seat (203); The second locking bolt (204) is threadedly connected to one side of the first limiting slider (202) and passes through the first limiting slider (202) to fit tightly with the inner side of the first T-shaped sliding groove (201), so as to fix the vertical height of the first limiting slider (202).

4. A lithium battery testing fixture according to claim 3, characterized in that: The second limiting unit comprises a second T-shaped sliding groove (205), a second limiting sliding block (206), and a second supporting seat (207); The second T-shaped slide groove (205) is opened at the top of the slide seat (104) and penetrates to one side of the slide seat (104); the second limit slider (206) is vertically slidably connected to the inner side of the second T-shaped slide groove (205) and extends to the outer side of the first locking bolt (105); The second support seat (207) is distributed at one end of the slide seat (104) close to the fixed seat (103) and is located directly below the negative electrode clamping end (108); the side surface of the second support seat (207) is fixedly connected to the second limiting slider (206), and the second support seat (207) is used to support the lower side of the other end of the lithium battery (3).

5. A lithium battery testing fixture according to claim 4, characterized in that: The linkage unit comprises a linkage guide rod (208), a through hole (209), and a vertical groove (210); The linkage guide rod (208) is fixed to one end of the first support seat (203), the through hole (209) is opened at one end of the second support seat (207) and passes through the other end of the second support seat (207), and the vertical groove (210) is opened at one end of the slide seat (104) and passes through the other end of the slide seat (104); The linkage guide rod (208) passes through the through hole (209) and the vertical groove (210) in sequence. The linkage guide rod (208) is sleeved with the through hole (209) to achieve synchronous up and down movement of the first support seat (203) and the second support seat (207) without affecting the horizontal movement of the second support seat (207). The vertical groove (210) is used to provide space for the up and down movement of the linkage guide rod (208) without affecting the horizontal movement of the slide seat (104).

6. A lithium battery testing fixture according to claim 4, characterized in that: The tops of the first support seat (203) and the second support seat (207) are formed with V-shaped grooves, and the center lines of the V-shaped grooves are aligned with the center lines of the positive electrode clamping end (107) and the negative electrode clamping end (108) in the vertical direction.

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