CN211741421U - Battery internal resistance test fixture - Google Patents
Battery internal resistance test fixture Download PDFInfo
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- CN211741421U CN211741421U CN202020140553.8U CN202020140553U CN211741421U CN 211741421 U CN211741421 U CN 211741421U CN 202020140553 U CN202020140553 U CN 202020140553U CN 211741421 U CN211741421 U CN 211741421U
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- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 239000000523 sample Substances 0.000 claims abstract description 97
- 230000000694 effects Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model relates to a battery test field, concretely relates to battery internal resistance test fixture. The battery internal resistance test fixture comprises a base and a support frame fixed above the base; the device comprises a support frame, and is characterized in that a movable air cylinder is installed on the support frame, the piston rod end of the movable air cylinder is connected with a probe seat, a probe is arranged in the probe seat, the upper end of the probe is connected with an external test line of a battery internal resistance tester, and the lower end of the probe is perpendicular to the object carrying surface of the base. The battery to be tested is placed on the object carrying surface of the base, the piston rod of the movable air cylinder is controlled to extend downwards along the direction of the object carrying surface of the base, the probe in the probe seat is driven to synchronously move downwards until the lower end of the probe is respectively contacted with the positive electrode and the negative electrode of the battery to be tested, stable electric connection is achieved, the compression degree and the contact area between the test probe and the electrode lug of the battery are fixed, and the accuracy and the consistency of the test result of the internal resistance of the battery are improved.
Description
Technical Field
The utility model relates to a battery test field, concretely relates to battery internal resistance test fixture.
Background
The conventional battery internal resistance tester is generally electrically connected with the pole lugs of the battery through a clamping mechanism at the tail end of a test line, and the accuracy and consistency of a battery internal resistance test result are poor due to the fact that the clamping degree and the contact area between the clamping mechanism and the pole lugs of the battery are uncontrollable.
SUMMERY OF THE UTILITY MODEL
For accuracy and the uniformity that improves battery internal resistance test result, the utility model provides a new battery internal resistance test fixture.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
a battery internal resistance test fixture comprises a base 1 and a support frame 2 fixed above the base 1;
install movable cylinder 3 on the support frame 2, the tailpiece of the piston rod of movable cylinder 3 is connected with probe holder 4, be provided with probe 5 in the probe holder 4, wherein, the external test wire of battery internal resistance tester is connected to the upper end of probe 5, the lower extreme perpendicular to of probe 5 the year thing face of base 1.
Preferably, the support frame 2 is an L-shaped plate formed by connecting a horizontal plate 20 and a vertical plate 21, wherein the horizontal plate 20 of the support frame 2 is detachably fixed on the object carrying surface of the base 1, and the vertical plate 21 of the support frame 2 is provided with a cylinder mounting groove 22 for mounting the movable cylinder 3.
Preferably, the movable cylinder 3 drives the piston rod thereof to move up and down along the direction vertical to the carrying surface of the base 1.
Preferably, a battery limiting groove is formed in the carrying surface of the base 1, and the probe 5 moves downwards along with the piston rod of the movable cylinder 3 until the probe is stably and electrically connected with a lug of a battery to be tested.
Preferably, the bottom end of the piston rod of the movable cylinder 3 is connected with a buffer block 6.
Preferably, the piston rod end of the movable cylinder 3 is connected with the probe seat 4 through a connecting plate 7;
one end of the connecting plate 7, which is close to the movable cylinder 3, is connected with the buffer block 6 through a bolt; at least two long slotted holes 71 are arranged at one end of the connecting plate 7 far away from the movable cylinder 3.
Preferably, two probe seats 4 are arranged in the battery internal resistance test fixture;
each probe seat 4 comprises a fixed part and a pin inserting part, the probe seat 4 is connected with the connecting plate 7 through the fixed part, the pin inserting part is provided with at least one probe jack 41, and the upper end and the lower end of the probe 5 respectively protrude out of the probe jack 41.
Preferably, the probe 5 is of a telescopic construction.
Preferably, a cover plate 8 is further arranged between each probe seat 4 and the connecting plate 7;
the screw rod sequentially penetrates through the fixing part of the probe seat 4 and the cover plate 8, penetrates through the long slotted hole 71 on the connecting plate 7 and then is screwed with the nut, so that the probe seat 4, the cover plate 8 and the connecting plate 7 are connected together.
Preferably, the movable cylinder 3 is connected with an air source and a foot switch through a compressed air pipe.
In the battery internal resistance test fixture provided by the technical scheme, the battery to be tested is placed on the object carrying surface of the base, and the piston rod of the movable air cylinder is controlled to extend downwards along the direction of the object carrying surface of the base, so that the probe in the probe seat is driven to synchronously move downwards until the lower end of the probe is respectively contacted with the positive electrode and the negative electrode of the battery to be tested, stable electric connection is realized, the compression degree and the contact area between the test probe and the electrode lug of the battery are fixed, and the accuracy and the consistency of the battery internal resistance test result are improved.
Drawings
FIG. 1 is a front view of a battery internal resistance test fixture;
FIG. 2 is a side view of a battery internal resistance test fixture;
FIG. 3 is a side view of the support bracket;
FIG. 4 is a front view of the support bracket;
FIG. 5 is a top view of the support bracket;
FIG. 6 is a top view of the connection plate;
FIG. 7 is a side view of a probe holder;
FIG. 8 is a top view of the probe base;
FIG. 9 is a structural view of the probe;
fig. 10 is a top view of the cover plate.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, in the case where no explanation is given to the contrary, the terms of orientation such as "upper, lower, left, and right" used herein refer to the upper, lower, left, and right directions of the battery internal resistance testing jig shown in fig. 1, respectively.
The utility model provides a battery internal resistance test fixture, as shown in figure 1 and figure 2, this battery internal resistance test fixture includes base 1 and fixes the support frame 2 of base 1 top.
The battery internal resistance tester is characterized in that a movable cylinder 3 is installed on the support frame 2, the piston rod end of the movable cylinder 3 is connected with a probe seat 4, a probe 5 is arranged in the probe seat 4, the upper end of the probe 5 is connected with an external test line of the battery internal resistance tester, and the lower end of the probe 5 is perpendicular to the object carrying surface of the base 1.
The utility model provides a working principle of battery internal resistance test fixture is: the battery to be tested is placed on the object carrying surface of the base 1, the piston rod of the movable cylinder 3 is controlled to extend downwards along the direction of the object carrying surface of the base 1, the probe 5 in the probe seat 4 is driven to synchronously move downwards until the lower end of the probe 5 is respectively contacted with the positive electrode and the negative electrode of the battery to be tested, stable electric connection is achieved, the compression degree and the contact area between the test probe 5 and the electrode lug of the battery are fixed, and the accuracy and the consistency of the test result of the internal resistance of the battery are improved.
Specifically, as shown in fig. 3 to 5, the support frame 2 is an L-shaped plate formed by connecting a horizontal plate 20 and a vertical plate 21, wherein the horizontal plate 20 and the base 1 of the support frame 2 are provided with a plurality of corresponding bolt holes, preferably 3 bolt holes, so that the horizontal plate 20 of the support frame 2 is detachably fixed on the object carrying surface of the base 1 through bolts, and the vertical plate 21 of the support frame 2 is provided with a cylinder mounting groove 22 for mounting the movable cylinder 3.
The movable cylinder 3 is a metal machine member which drives a piston rod to do linear reciprocating motion through compressed air, and the adjusting mode is as follows: after the air source is connected, the piston rod is positioned at the upper end; opening a stop valve of the movable cylinder, allowing compressed air to pass through a pressure regulating valve to a reversing valve, and allowing the compressed air to enter a lower cavity of the movable cylinder to push a piston rod to move upwards; after the reversing valve is manually reversed, compressed air enters an upper cavity of the movable air cylinder to push the piston rod to move downwards.
Further, the movable cylinder 3 drives a piston rod of the movable cylinder to move up and down along the direction perpendicular to the object carrying surface of the base 1, so that the probe seat 4 and a probe 5 installed in the probe seat 4 are driven to move synchronously.
And, be provided with battery spacing groove (not shown) on the year thing face of base 1, the battery that awaits measuring is fixed in the battery spacing groove, probe 5 moves down along with the piston rod of activity cylinder 3 until realizing stable electricity with the positive/negative pole ear of the battery that awaits measuring and be connected.
Further, the bottom end of the piston rod of the movable cylinder 3 is connected with a buffer block 6.
The utility model discloses in, the tailpiece of the piston rod of activity cylinder 3 is connected with probe holder 4 through connecting plate 7. As shown in fig. 6, a bolt hole 70 is formed in one end of the connecting plate 7 close to the movable cylinder 3, and the connecting plate 7 is connected to the buffer block 6 through a bolt. Preferably, at least two long slotted holes 71 are arranged at one end of the connecting plate 7 far away from the movable cylinder 3. More preferably, four long slots 71 are provided on the end of the connecting plate remote from the movable cylinder 3.
According to one specific embodiment, the dimensions of the slotted hole 71 are: length 20-24mm, preferably 22 mm; the width is 4-6mm, preferably 5 mm; the distance between adjacent slotted holes 71 is 7-9mm, preferably 8 mm.
Further, two probe seats 4 are arranged in the battery internal resistance test fixture.
As shown in fig. 7 and 8, each of the probe holders 4 includes a fixture portion and a needle portion. The probe seat 4 is connected with the connecting plate 7 through a fixing portion of the probe seat, specifically, two screw holes 40 are formed in the fixing portion of the probe seat 4, and the fixing portion of the probe seat 4 is connected with the connecting plate 7 through screws. The pin part is provided with at least one probe insertion hole 41, and preferably, the pin part of each probe base 4 is provided with two probe insertion holes 41 for mounting two probes 5. As shown in fig. 9, a position limiting structure corresponding to the inner wall of the probe insertion hole 41 is provided on the outer wall of the probe 5 for fixing the probe 5 in the probe insertion hole 41. And, the upper and lower ends of each probe 5 protrude from the probe insertion holes 41, respectively.
The probe 5 is a metal conductive material such as copper. The piston rod of the cylinder drives the probes 5 to move up and down, and when the piston rod moves to a bottom dead center, the probes 5 on the two probe bases 4 are respectively contacted with the positive pole and the negative pole of the battery. Preferably, the probe 5 is of a telescopic structure, for example, the inside of the probe 5 may be of a compression spring structure, so as to ensure that the probe 5 is in good electrical contact with the battery tab.
Further, a cover plate 8 is arranged between each probe seat 4 and the connecting plate 7. As shown in fig. 10, the cover plate 8 is provided with a first through hole 80 corresponding to the screw hole 40 of the probe holder and a second through hole 81 corresponding to the probe insertion hole 41. The number of the first through holes 80 and the number of the second through holes 81 are two.
In practical application, a screw rod sequentially penetrates through the fixing part of the probe base 4 and the cover plate 8, penetrates through the slotted hole 71 on the connecting plate 7 and then is screwed with a nut, so that the probe base 4, the cover plate 8 and the connecting plate 7 are connected together. The part of the probe 5 near the upper end is clamped in the through hole 80 of the cover plate 8, and the top end of the probe 5 is connected with an external test wire of the battery internal resistance tester. The battery internal resistance tester can be any battery internal resistance tester including IT5100 series.
Further, the movable air cylinder 3 is connected with an air source and a foot switch through a compressed air pipe.
The utility model discloses in, a foot switch has been connected to the activity cylinder, through the piston rod reciprocating motion of foot switch control activity cylinder, the reciprocal number of times of piston rod is decided according to the measurement number of times of battery internal resistance, and the activity cylinder is ventilated the back piston rod and is kept last spacing, and the foot is stepped on once cylinder one-way motion and is once. The piston rod of the movable cylinder is controlled by the foot switch to extend out towards the object carrying surface of the base, and the foot switch is used for controlling the movable cylinder to move downwards to drive the probe to be in telescopic contact with the electrode lug of the battery to be tested, so that the contact internal resistance is reduced under the condition of ensuring the contact tightness, and stable electric connection is realized.
The battery internal resistance test fixture is used together with a battery internal resistance tester, manual compression is not needed in the test process, the test process is simplified, and meanwhile, the accuracy and consistency of the test result are ensured. In addition, because the piston rod of the movable cylinder has a certain telescopic stroke, and the testing probe is also of a telescopic structure, the internal resistance of batteries with different thicknesses can be tested, and the universality of the clamp is better expanded.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.
Claims (10)
1. The clamp for testing the internal resistance of the battery is characterized by comprising a base (1) and a support frame (2) fixed above the base (1);
install activity cylinder (3) on support frame (2), the tailpiece of the piston rod of activity cylinder (3) is connected with probe seat (4), be provided with probe (5) in probe seat (4), wherein, the external test wire of battery internal resistance tester is connected to the upper end of probe (5), the lower extreme perpendicular to of probe (5) the year thing face of base (1).
2. The clamp for testing the internal resistance of the battery as claimed in claim 1, wherein the supporting frame (2) is an L-shaped plate formed by connecting a horizontal plate (20) and a vertical plate (21), wherein the horizontal plate (20) of the supporting frame (2) is detachably fixed on the carrying surface of the base (1), and the vertical plate (21) of the supporting frame (2) is provided with a cylinder mounting groove (22) for mounting the movable cylinder (3).
3. The clamp for testing the internal resistance of the battery according to claim 1 or 2, wherein the movable cylinder (3) moves up and down along the direction vertical to the carrying surface of the base (1) by driving the piston rod of the movable cylinder.
4. The clamp for testing the internal resistance of the battery according to claim 3, wherein a battery limiting groove is formed in the carrying surface of the base (1), and the probe (5) moves downwards along with the piston rod of the movable cylinder (3) until being stably electrically connected with a lug of the battery to be tested.
5. The clamp for testing the internal resistance of the battery according to claim 4, wherein a buffer block (6) is connected to the bottom end of the piston rod of the movable cylinder (3).
6. The clamp for testing the internal resistance of the battery as claimed in claim 5, wherein the piston rod end of the movable cylinder (3) is connected with the probe seat (4) through a connecting plate (7);
one end of the connecting plate (7) close to the movable cylinder (3) is connected with the buffer block (6) through a bolt;
and at least two long slotted holes (71) are formed in one end, far away from the movable cylinder (3), of the connecting plate (7).
7. The clamp for testing the internal resistance of the battery as claimed in claim 6, wherein two probe seats (4) are arranged in the clamp for testing the internal resistance of the battery;
every probe seat (4) include fixed part and contact pin portion, probe seat (4) through its fixed part with connecting plate (7) are connected, contact pin portion is provided with at least one probe jack (41), the upper and lower both ends of probe (5) respectively protrusion in probe jack (41).
8. The clamp for testing the internal resistance of the battery according to claim 7, wherein the probe (5) is of a telescopic structure.
9. The clamp for testing the internal resistance of the battery as claimed in claim 7, wherein a cover plate (8) is further arranged between each probe seat (4) and the connecting plate (7);
the screw rod sequentially penetrates through the fixing part of the probe seat (4) and the cover plate (8), penetrates through the long slotted hole (71) in the connecting plate (7) and then is connected with the nut in a screwing mode, and therefore the probe seat (4), the cover plate (8) and the connecting plate (7) are connected together.
10. The clamp for testing the internal resistance of the battery according to claim 1, wherein the movable air cylinder (3) is connected with an air source and a foot switch through a compressed air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140553.8U CN211741421U (en) | 2020-01-21 | 2020-01-21 | Battery internal resistance test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140553.8U CN211741421U (en) | 2020-01-21 | 2020-01-21 | Battery internal resistance test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211741421U true CN211741421U (en) | 2020-10-23 |
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ID=72878841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020140553.8U Active CN211741421U (en) | 2020-01-21 | 2020-01-21 | Battery internal resistance test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211741421U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376539A (en) * | 2021-06-10 | 2021-09-10 | 珠海伊托科技有限公司 | Storage battery internal resistance precision testing device with loop resistor |
| CN113391227A (en) * | 2021-06-10 | 2021-09-14 | 珠海伊托科技有限公司 | High-precision tester and testing method for internal resistance of storage battery |
-
2020
- 2020-01-21 CN CN202020140553.8U patent/CN211741421U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376539A (en) * | 2021-06-10 | 2021-09-10 | 珠海伊托科技有限公司 | Storage battery internal resistance precision testing device with loop resistor |
| CN113391227A (en) * | 2021-06-10 | 2021-09-14 | 珠海伊托科技有限公司 | High-precision tester and testing method for internal resistance of storage battery |
| CN113391227B (en) * | 2021-06-10 | 2022-06-14 | 珠海伊托科技有限公司 | High-precision tester and testing method for internal resistance of storage battery |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 435100 No. 66 Changle Avenue, Luojiaqiao Street, Daye City, Huangshi City, Hubei Province Patentee after: Hubei Rongtong High tech Advanced Materials Group Co.,Ltd. Address before: 435100 No. 66 Changle Avenue, Luojiaqiao Street, Daye City, Huangshi City, Hubei Province Patentee before: HUBEI RT ADVANCED MATERIALS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |