Clamp for testing lithium ion battery
By designing a lithium-ion battery test fixture including a base, a conductive plate and a holder, the problems of cumbersome operation and easy distortion and deformation in the prior art are solved, and simple operation and accuracy of test results are achieved.
Patent Information
- Application Number
- CN202323555491.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2033-12-26
AI Technical Summary
During charging and discharging test of lithium-ion batteries, the existing technology is cumbersome to operate and easily lead to distortion, deformation and fracture of the extreme ears, affecting the test results.
Design a lithium-ion battery test fixture, including a base, conductive plate and clamping member, clamping the electrode ears through the clamping member and the conductive plate, and connecting them to the connecting terminals through the wiring posts to ensure the stability of the conductive plate and the electrode ears. touch.
It realizes simple operation and stable clamping of lithium-ion batteries, reduces contact resistance and heat generation, avoids twisting, deformation and fracture of the pole ears, and ensures the accuracy of the test results.
Smart Images
Figure CN222529385U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of battery testing, in particular to a fixture for testing lithium ion batteries. Background Art
[0002] Lithium-ion batteries generally include an electrolyte and positive and negative tabs distributed on both sides of the electrolyte. When testing the charge and discharge of lithium-ion batteries, the positive and negative tabs need to be matched one by one with the positive and negative connection terminals on the charging and discharging equipment and electrically connected. The conventional connection method is to punch holes in the tabs, and the connection terminals are copper noses. The tabs are connected to the corresponding copper noses by bolts and nuts. The operation is cumbersome, time-consuming and labor-intensive. In addition, since the positive and negative current lines of the charging and discharging equipment are movable, and the tabs are relatively soft, if the position of the current lines is adjusted during the test, the tabs are easily subjected to force and twisted, deformed, or broken, which will affect the test results. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a lithium ion battery testing fixture, which is relatively simple to operate, can stably clamp the lithium ion battery, and is helpful to obtain accurate test results.
[0004] The technical solution adopted by the utility model to solve the above technical problems is: a fixture for testing lithium-ion batteries, including a base, on which two conductive plates and two clamping pieces are arranged, the two conductive plates are distributed in the left and right directions, the upper end surfaces of the conductive plates are provided with terminals for connecting to positive and negative electrode connection terminals, the two clamping pieces correspond to the two conductive plates one by one, the clamping pieces are used to cooperate with the corresponding conductive plates to clamp the pole ears, a placement space for placing lithium-ion batteries is formed between the two clamping pieces, and the terminal is located on the side of the two clamping pieces away from the placement space.
[0005] Preferably, the clamping member includes two support columns, a top plate, a pressure plate, a screw, a handle and a first guide rod, the two support columns are distributed on the front and rear sides of the conductive plate, the upper ends of the two support columns are fixedly connected through the top plate, the pressure plate is located between the conductive plate and the top plate, a first screw hole and a first guide hole are provided on the top plate, the lower end of the screw passes through the first screw hole and is rotatably connected to the upper end of the pressure plate, the handle is fixedly provided on the upper end of the screw, and the lower end of the first guide rod passes through the first guide hole and is fixedly connected to the upper end of the pressure plate.
[0006] Preferably, a copper block is fixedly disposed at the lower end of the pressing plate.
[0007] Preferably, the upper end surface of the conductive plate is electroplated with a first gold-plated layer, and the lower end surface of the copper block is electroplated with a second gold-plated layer.
[0008] Preferably, the base and the pressing plate are both made of insulating bakelite.
[0009] Preferably, a plurality of heat dissipation holes are provided on the base, and all of the heat dissipation holes are located between the two conductive plates.
[0010] Preferably, a slide groove, a slider and a limiter are provided on the base, the slider slides with the slide groove left and right, a conductive plate and a clamping member are provided on the slider, and the limiter is used to limit the sliding of the slider.
[0011] Preferably, a second guide rod is provided between the left and right side walls of the slide groove, a second guide hole is provided on the side of the slide block, and the second guide rod passes through the second guide hole.
[0012] Preferably, the limiting member includes at least one limiting plate, the bottom of the slide groove is provided with a plurality of second screw holes, the plurality of second screw holes are divided into two rows, front and rear, the limiting plate is provided with two connecting holes and two bolts, one of the bolts passes through a connecting hole and is threadedly connected with a second screw hole located in the front row, and the other bolt passes through another connecting hole and is threadedly connected with a second screw hole located in the back row.
[0013] Preferably, a plurality of air holes are provided at the bottom of the chute.
[0014] Compared with the prior art, the advantages of the utility model are:
[0015] 1. The pole ear is clamped by the clamping piece and the conductive plate. Compared with tightening bolts and nuts, the operation is simpler, and the conductive plate and the pole ear can be fully in contact, thereby effectively reducing the contact resistance between the two and reducing the heat generated when the current passes through;
[0016] 2. By setting a terminal on the conductive plate, the connecting terminal is indirectly connected to the pole ear through the terminal, the conductive plate, and since the conductive plate is fixed on the base and cannot be moved, even if the positive and negative current lines of the charging and discharging equipment move, the pole ear will not be subjected to force and twist, deform, or break. It has good stability and helps to obtain accurate test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;
[0018] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;
[0019] Figure 3 It is a schematic diagram of the local structure of the utility model Figure 1;
[0020] Figure 4 It is a partial cross-sectional structural schematic diagram of the utility model;
[0021] Figure 5 It is a schematic diagram of the local structure of the utility model Figure 2 ;
[0022] Figure 6 It is a schematic diagram of the partial explosion structure of the utility model.
[0023] In the figure: 1. base; 11. heat dissipation hole; 12. slide groove; 121. second guide rod; 122. second screw hole; 123. air vent; 13. slider; 131. second guide hole; 14. limiter; 141. limiter plate; 142. connecting hole; 143. bolt; 2. conductive plate; 21. terminal; 22. first gold-plated layer; 3. clamping member; 31. support column; 32. top plate; 321. first screw hole; 322. first guide hole; 33. pressure plate; 34. screw; 35. handle; 36. first guide rod; 37. copper block; 371. second gold-plated layer. DETAILED DESCRIPTION
[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0026] Embodiment 1: Figure 1 and Figure 2 As shown, a fixture for testing lithium-ion batteries includes a base 1, on which two conductive plates 2 and two clamping members 3 are arranged, the two conductive plates 2 are distributed in the left-right direction, the upper end surface of the conductive plates 2 is provided with a terminal 21 for connecting to the positive and negative connecting terminals, the two clamping members 3 correspond to the two conductive plates 2 one by one, the clamping members 3 are used to clamp the pole ears with the corresponding conductive plates 2, a placement space for placing lithium-ion batteries is formed between the two clamping members 3, and the terminal 21 is located on the side of the two clamping members 3 away from the placement space. Among them, the conductive plates 2 are fixedly connected to the base 1.
[0027] In this embodiment, a plurality of heat dissipation holes 11 are provided on the base 1 , and all the heat dissipation holes 11 are located between the two conductive plates 2 , so as to facilitate heat exchange between the lithium-ion battery and the outside world.
[0028] Preferably, each conductive plate 2 is provided with two terminals 21 for testing channels to be used in parallel.
[0029] Embodiment 2: Figure 2 and Figure 3 As shown, the rest of the parts are the same as those in the first embodiment, except that the clamping member 3 includes two support columns 31, a top plate 32, a pressing plate 33, a screw rod 34, a handle 35 and a first guide rod 36. The two support columns 31 are distributed on the front and rear sides of the conductive plate 2, and the upper ends of the two support columns 31 are fixedly connected through the top plate 32. The pressing plate 33 is located between the conductive plate 2 and the top plate 32. The top plate 32 is provided with a first screw hole 321 and a first guide hole 322. The lower end of the screw rod 34 passes through the first screw hole 321 and is rotatably connected to the upper end of the pressing plate 33. The handle 35 is fixedly arranged at the upper end of the screw rod 34, and the lower end of the first guide rod 36 passes through the first guide hole 322 and is fixedly connected to the upper end of the pressing plate 33. Among them, a rotating seat is provided on the upper end surface of the pressing plate 33, and the lower end of the screw rod 34 is rotatably matched with the pressing plate 33 through the rotating seat.
[0030] Furthermore, a copper block 37 is fixedly disposed at the lower end of the pressing plate 33. Of course, the copper block 37 may also be other metal blocks with good electrical conductivity and stable performance.
[0031] The tester can adjust the height of the pressing plate 33 by rotating the screw rod 34 through the handle 35, so that the copper block 37 cooperates with the conductive plate 2 to clamp the pole ear or separate from the pole ear, making it more convenient to disassemble and assemble the lithium-ion battery.
[0032] Embodiment 3: Figure 4 As shown, the rest of the parts are the same as those in the second embodiment, except that the upper end surface of the conductive plate 2 is plated with a first gold-plated layer 22, and the lower end surface of the copper block 37 is plated with a second gold-plated layer 371, which has a better conductive effect. Of course, the plating layer can also be nickel-plated or other metals with good conductivity and stable performance.
[0033] In this embodiment, the base 1 and the pressing plate 33 are both made of insulating bakelite, which have good rigidity and insulation properties.
[0034] Embodiment 4: Figure 1 , Figure 5 and Figure 6As shown, the rest of the parts are the same as those of the first embodiment, except that a slide groove 12, a slider 13 and a stopper 14 are provided on the base 1, the slider 13 slides with the slide groove 12 left and right, a conductive plate 2 and a clamping member 3 are provided on the slider 13, and the stopper 14 is used to limit the sliding of the slider 13. The design of this structure makes the distance between the two clamping members 3 adjustable, so that the clamping member 3 can be adapted to lithium-ion batteries of different sizes, and has good applicability.
[0035] In this embodiment, a second guide rod 121 is arranged between the left and right side walls of the slide groove 12, and a second guide hole 131 is arranged on the side of the slider 13. The second guide rod 121 passes through the second guide hole 131, and the second guide rod 121 and the second guide hole 131 cooperate to play a guiding role, ensuring that the slider 13 can only slide in the left and right directions, and has better stability.
[0036] In this embodiment, the limiting member 14 includes at least one limiting plate 141, and the bottom of the chute 12 is provided with a plurality of second screw holes 122, and the plurality of second screw holes 122 are divided into two rows, front and rear, and the limiting plate 141 is provided with two connecting holes 142 and two bolts 143, and one bolt 143 passes through one connecting hole 142 and is threadedly connected with a second screw hole 122 in the front row, and another bolt 143 passes through another connecting hole 142 and is threadedly connected with a second screw hole 122 in the rear row. When there is one limiting plate 141, the limiting plate 141 can cooperate with the left side surface of the chute 12 or the right side surface of the chute 12 to limit the sliding of the slider 13, and when there are two limiting plates 141, the two limiting plates 141 are distributed on the left and right sides of the slider 13 to limit the sliding of the slider 13, and can be adjusted according to actual needs, with good flexibility.
[0037] In this embodiment, a plurality of air holes 123 are provided at the bottom of the slide groove 12 to facilitate heat exchange between the lithium-ion battery and the outside world.
[0038] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. A lithium-ion battery testing fixture, characterized in that The invention comprises a base (1), on which two conductive plates (2) and two clamping members (3) are arranged, the two conductive plates (2) are distributed in the left-right direction, the upper end surfaces of the conductive plates (2) are provided with terminals (21) for connecting to positive and negative electrode connection terminals, the two clamping members (3) correspond to the two conductive plates (2) one by one, the clamping members are used to cooperate with the corresponding conductive plates (2) to clamp the pole ears, a placement space for placing lithium-ion batteries is formed between the two clamping members (3), and the terminals (21) are located on the side of the two clamping members (3) away from the placement space.
2. A lithium-ion battery testing fixture according to claim 1, characterized in that The clamping member (3) comprises two supporting columns (31), a top plate (32), a pressing plate (33), a screw rod (34), a handle (35) and a first guide rod (36). The two supporting columns (31) are distributed on the front and rear sides of the conductive plate (2). The upper ends of the two supporting columns (31) are fixedly connected through the top plate (32). The pressing plate (33) is located between the conductive plate (2) and the top plate (32). The top plate (32) is provided with a first screw hole (321) and a first guide hole (322). The lower end of the screw rod (34) passes through the first screw hole (321) and is rotatably connected to the upper end of the pressing plate (33). The handle (35) is fixedly arranged on the upper end of the screw rod (34). The lower end of the first guide rod (36) passes through the first guide hole (322) and is fixedly connected to the upper end of the pressing plate (33).
3. A lithium-ion battery testing fixture according to claim 2, characterized in that A copper block (37) is fixedly disposed at the lower end of the pressing plate (33).
4. A lithium-ion battery testing fixture according to claim 3, characterized in that The upper end surface of the conductive plate (2) is electroplated with a first gold-plated layer (22), and the lower end surface of the copper block (37) is electroplated with a second gold-plated layer (371).
5. A lithium-ion battery testing fixture according to claim 2, characterized in that The base (1) and the pressing plate (33) are both made of insulating bakelite.
6. A lithium-ion battery testing fixture according to claim 1, characterized in that The base (1) is provided with a plurality of heat dissipation holes (11), and all the heat dissipation holes (11) are located between the two conductive plates (2).
7. A lithium-ion battery testing fixture according to claim 1, characterized in that The base (1) is provided with a slide groove (12), a slider (13) and a limiter (14); the slider (13) and the slide groove (12) are slidably matched to each other left and right; a conductive plate (2) and a clamping member (3) are provided on the slider (13); and the limiter (14) is used to limit the sliding of the slider (13).
8. A lithium-ion battery testing fixture according to claim 7, characterized in that A second guide rod (121) is provided between the left and right side walls of the slide groove (12), a second guide hole (131) is provided on the side of the slide block (13), and the second guide rod (121) passes through the second guide hole (131).
9. A lithium-ion battery testing fixture according to claim 7, characterized in that The limiting member (14) comprises at least one limiting plate (141); a plurality of second screw holes (122) are arranged at the bottom of the slide groove (12); the plurality of second screw holes (122) are divided into two rows, front and rear; two connecting holes (142) and two bolts (143) are arranged on the limiting plate (141); one of the bolts (143) passes through one of the connecting holes (142) and is threadedly connected to one of the second screw holes (122) located in the front row; another of the bolts (143) passes through another of the connecting holes (142) and is threadedly connected to one of the second screw holes (122) located in the rear row.
10. A lithium-ion battery testing fixture according to claim 7, characterized in that The bottom of the slide groove (12) is provided with a plurality of air holes (123).