CN213122032U - Power lithium ion battery cell heavy current charge-discharge test fixture - Google Patents
Power lithium ion battery cell heavy current charge-discharge test fixture Download PDFInfo
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- CN213122032U CN213122032U CN202022144188.0U CN202022144188U CN213122032U CN 213122032 U CN213122032 U CN 213122032U CN 202022144188 U CN202022144188 U CN 202022144188U CN 213122032 U CN213122032 U CN 213122032U
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Abstract
The utility model relates to a power lithium ion battery cell heavy current charge-discharge test fixture test technical field discloses a power lithium ion battery cell heavy current charge-discharge test fixture, including bottom plate, upper cover plate, set up porose one, hole two on the upper cover plate, porose three is seted up to the bottom plate, and the upper cover plate is equipped with fastening bolt, utmost point ear thickness positioning bolt. The utility model has the advantages of it is following and effect: silver coatings are arranged on the lower supporting plate and the upper cover plate, so that contact impedance is reduced; by adjusting the lug thickness positioning bolt, after the lug is clamped by the lower supporting plate and the upper cover plate, the three are in a parallel contact state, the contact area of the clamp and the lug is increased, and the condition that the clamp generates heat in the heavy-current charging and discharging process is avoided; the lower supporting plate is provided with the first tooth patterns, the upper supporting plate is provided with the second tooth patterns, the condition that point-to-point poor contact is caused due to the fact that the electrode lugs are not flat is avoided, and reliability of high-current charging and discharging test data of the power lithium ion single battery and safety of a test process are guaranteed.
Description
Technical Field
The utility model relates to a power lithium ion battery cell heavy current charge-discharge test fixture test technical field, in particular to power lithium ion battery cell heavy current charge-discharge test fixture.
Background
At present, in the power lithium ion battery cell test process, often relate to heavy current charge-discharge, because the increase of battery cell lithium ion battery charging-discharging current, the generating heat of charge-discharging in-process anchor clamps can lead to the heat to conduct to the battery cell through utmost point ear inside, influences the accuracy of test data and the security of testing process. Therefore, the clamp is good in clamping, low in contact resistance and not heated in the charging and discharging process. The traditional polymer clamp has the problems of insufficient clamping, overlarge contact impedance with a tab and serious heating of the clamp in the large-current charging and discharging test process, so that a test clamp with good clamping and low contact impedance needs to be designed to adapt to the large-current charging and discharging test of a single lithium ion battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power lithium ion battery cell heavy current charge-discharge test fixture has and presss from both sides tight good effect.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a power lithium ion battery cell heavy current charge-discharge test fixture, includes bottom plate, upper cover plate, set up porose one, hole two on the upper cover plate, the bottom plate is seted up porose three, the upper cover plate is equipped with fastening bolt, threaded connection that pass a back threaded connection in hole three hole two just supports utmost point ear thickness positioning bolt on the bottom plate.
Through adopting above-mentioned technical scheme, when power lithium ion battery cell heavy current charge-discharge test fixture used, power lithium ion battery cell's utmost point ear was arranged in between bottom plate and the upper cover plate, adjust utmost point ear thickness positioning bolt, the length that makes utmost point ear thickness positioning bolt screw rod be located between bottom plate and the upper cover plate is unanimous with utmost point ear thickness, the fastening bolt of screwing, through the bottom plate, the upper cover plate is the centre gripping of power lithium ion battery cell utmost point ear, the upper cover plate, the bottom plate is parallel clamping state, increase anchor clamps and utmost point ear area of contact, the centre gripping is effectual.
The utility model discloses a further set up to: the first hole, the second hole and the third hole are all provided with internal threads, and the fastening bolt is in threaded connection with the third hole.
The utility model discloses a further set up to: the upper end surface of the lower supporting plate is provided with a first tooth pattern, and the lower end surface of the upper cover plate is provided with a second tooth pattern.
Through adopting above-mentioned technical scheme, because of the circumstances that there is self unevenness in utmost point ear, the bottom plate sets up insection one, and the upper cover plate sets up insection two, avoids showing the bad condition like this of point-to-point contact because of utmost point ear self unevenness leads to between utmost point ear and the anchor clamps.
The utility model discloses a further set up to: the first tooth pattern and the second tooth pattern are aligned up and down.
The utility model discloses a further set up to: the lower supporting plate and the upper cover plate are made of brass, and silver coatings are arranged on the surface of the lower supporting plate and the surface of the upper cover plate.
By adopting the technical scheme, the silver plating layers are arranged on the upper cover plate and the lower support plate, so that the contact impedance is reduced.
The utility model discloses a further set up to: the lower supporting plate is provided with four holes, and connecting bolts are connected with the four holes through internal threads.
Through adopting above-mentioned technical scheme, the bottom plate passes through connecting bolt and is connected with electric current pencil terminal.
The utility model has the advantages that: silver coatings are arranged on the lower supporting plate and the upper cover plate, so that contact impedance is reduced; by adjusting the lug thickness positioning bolt, after the lug is clamped by the lower supporting plate and the upper cover plate, the three are in a parallel contact state, the contact area of the clamp and the lug is increased, and the condition that the clamp generates heat in the heavy-current charging and discharging process is avoided; the lower supporting plate is provided with the first tooth patterns, the upper supporting plate is provided with the second tooth patterns, the condition that point-to-point poor contact is caused due to the fact that the electrode lugs are not flat is avoided, and reliability of high-current charging and discharging test data of the power lithium ion single battery and safety of a test process are guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the state of the lower supporting plate and the upper cover plate of the present invention when clamping the tab.
In the figure, 1, a lower supporting plate; 11. a first tooth pattern; 12. a third hole; 2. an upper cover plate; 21. a second tooth pattern; 22. a first hole; 23. a second hole; 3. fastening a bolt; 4. a tab thickness positioning bolt; 5. a connecting bolt; 6. a power lithium ion battery cell; 61. a tab; 7. a current harness terminal.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example (b): a power lithium ion single battery heavy current charge-discharge test fixture, as shown in figure 1 and figure 2, comprises a lower supporting plate 1 and an upper cover plate 2, wherein the lower supporting plate 1 and the upper cover plate 2 are made of brass, and silver coatings are respectively plated on the surface of the lower supporting plate 1 and the surface of the upper cover plate 2 for reducing contact impedance. The upper cover plate 2 is provided with a first hole 22 and a second hole 23, and the lower supporting plate 1 is provided with a third hole 12 and a fourth hole. The first hole 22, the second hole 23, the third hole 12 and the fourth hole are all provided with internal threads. And the upper cover plate 2 is provided with a fastening bolt 3 which penetrates through the first hole 22 and then is inserted into the third hole 12, and the fastening bolt 3 is in threaded connection with the first hole 22 and the third hole 12. And the upper cover plate 2 is also provided with a lug thickness positioning bolt 4 in threaded connection with the second hole 23, and a screw rod of the lug thickness positioning bolt 4 abuts against the lower support plate 1. And the lower supporting plate 1 is provided with a connecting bolt 5 in threaded connection with the hole four, and the connecting bolt 5 is used for connecting a current wiring harness terminal 7. The upper end surface of the lower supporting plate 1 is provided with a first tooth pattern 11, the lower end surface of the upper cover plate 2 is provided with a second tooth pattern 21, and the first tooth pattern 11 and the second tooth pattern 21 are aligned up and down.
The working principle of the large-current charging and discharging test fixture for the power lithium ion single battery is as follows: the method comprises the steps of placing a tab 61 of a power lithium ion battery cell 6 between a lower support plate 1 and an upper cover plate 2, adjusting a tab thickness positioning bolt 4 when the size of the tab 61 is small, enabling the length of a screw rod of the tab thickness positioning bolt 4 in a gap between the lower support plate 1 and the upper cover plate 2 to be consistent with the thickness of the tab 61, screwing a fastening bolt 3, clamping the tab 61 through the upper cover plate 2 and the lower support plate 1, and enabling the upper cover plate 2 and the lower support plate 1 to be in a parallel state. When the size of the tab 61 is large, a through hole is directly formed on the tab 61 after punching without using the tab thickness positioning bolt 4, the fastening bolt 3 directly penetrates through the through hole on the tab 61, the fastening bolt 3 is screwed, and the tab 61 is clamped by the upper cover plate 2 and the lower support plate 1.
Claims (6)
1. The utility model provides a power lithium ion battery cell heavy current charge-discharge test fixture which characterized in that: including bottom plate (1), upper cover plate (2), set up porose one (22), hole two (23) on upper cover plate (2), porose three (12) are seted up in bottom plate (1), upper cover plate (2) are equipped with fastening bolt (3), threaded connection that pass hole one (22) back threaded connection in hole three (12) hole two (23) and support utmost point ear thickness positioning bolt (4) on bottom plate (1).
2. The high-current charging and discharging test fixture for the power lithium ion single battery according to claim 1, is characterized in that: the first hole (22), the second hole (23) and the third hole (12) are provided with internal threads, and the fastening bolt (3) is in threaded connection with the third hole (12).
3. The high-current charging and discharging test fixture for the power lithium ion single battery according to claim 1, is characterized in that: the upper end face of the lower supporting plate (1) is provided with a first tooth pattern (11), and the lower end face of the upper cover plate (2) is provided with a second tooth pattern (21).
4. The high-current charging and discharging test fixture for the power lithium ion single battery according to claim 3, is characterized in that: the first tooth pattern (11) and the second tooth pattern (21) are aligned up and down.
5. The high-current charging and discharging test fixture for the power lithium ion single battery according to claim 1, is characterized in that: the lower supporting plate (1) and the upper cover plate (2) are made of brass, and silver coatings are arranged on the surface of the lower supporting plate (1) and the surface of the upper cover plate (2).
6. The high-current charging and discharging test fixture for the power lithium ion single battery according to claim 1, is characterized in that: the lower supporting plate (1) is provided with four holes, and the four holes are connected with connecting bolts (5) in an internal thread mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022144188.0U CN213122032U (en) | 2020-09-25 | 2020-09-25 | Power lithium ion battery cell heavy current charge-discharge test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022144188.0U CN213122032U (en) | 2020-09-25 | 2020-09-25 | Power lithium ion battery cell heavy current charge-discharge test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213122032U true CN213122032U (en) | 2021-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022144188.0U Active CN213122032U (en) | 2020-09-25 | 2020-09-25 | Power lithium ion battery cell heavy current charge-discharge test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213122032U (en) |
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2020
- 2020-09-25 CN CN202022144188.0U patent/CN213122032U/en active Active
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Effective date of registration: 20211028 Address after: 441000 No.18 Wuxi Road, high tech Zone, Xiangyang City, Hubei Province Patentee after: CAMEL GROUP NEW ENERGY CELL Co.,Ltd. Address before: Floor g6-1001, Wuhan New Energy Research Institute building, 999 Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: Camel Group Wuhan New Energy Technology Co.,Ltd. |