Square shell battery inversion test tool
By designing the square shell battery inverted test tooling, using inverted fixtures and heating plates to fix the battery, and setting counterweights at the bottom of the tooling, the problems of electrolyte outflow and Mars in the battery thermal runaway test are solved, and the accuracy of the test is improved and Security.
Patent Information
- Application Number
- CN202420289038.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-06
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-06
AI Technical Summary
During the battery thermal runaway test, the outflow of electrolyte and the occurrence of Mars resulted in inaccurate tests, and the battery was basically in an inverted state during actual use. The existing test tooling cannot effectively solve this problem.
A square-shell battery inverted testing tool is designed to fix the battery by inverting the clamp and heating plate, and a counterweight block is set at the bottom of the tool to ensure that the electrolyte is immediately flowing downward when the explosion-proof valve breaks, and avoiding Mars from contacting the electrolyte.
Avoid contact with Mars by flowing out of the electrolyte in advance, improve the pass rate of the thermal runaway test, and ensure the accuracy and safety of the test.
Smart Images
Figure CN222482394U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery testing, in particular to an inverted testing tool for square shell batteries. Background Art
[0002] At present, when the explosion-proof valve breaks during the thermal runaway test of the battery, the electrolyte will flow out along the opening of the explosion-proof valve. When the battery cell is depressurized from the explosion-proof valve mouth, sparks may appear, thereby igniting the electrolyte on the battery cell cover, making it difficult to pass the thermal runaway test. During actual use of the battery, the battery cell is basically in an inverted state, which is inconsistent with the actual usage. As a result, the battery that could have passed the test cannot pass the test due to the above problems, resulting in an inaccurate testing process. Utility Model Content
[0003] In order to solve the above problems, the utility model aims to propose an inverted test fixture for square shell batteries. By placing the battery upside down on the fixture, during the thermal runaway test, when the explosion-proof valve breaks, the electrolyte will immediately flow downward due to the influence of gravity. At the same time, a large amount of smoke and some sparks will be emitted from the battery. Because the electrolyte will flow out in advance, the sparks will not come into contact with the fallen electrolyte, thereby improving the pass rate of the thermal runaway test.
[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0005] A square shell battery inversion test tool comprises a tool body, on which an inversion clamp is arranged, and the inversion clamp is used to clamp the inverted square shell battery to perform a thermal runaway test on it.
[0006] Furthermore, the inverted fixture includes an outer clamping plate and an inner heating plate, the heating plate is used to heat the inverted square shell battery, and the clamping plate is used to clamp and fix the heating plate and the inverted square shell battery.
[0007] Furthermore, a counterweight block is provided at the bottom of the tool body.
[0008] Furthermore, the tooling body includes a base, on which four support frames are vertically fixed, two cross beams are fixed in parallel to the top of the support frames, two support beams are fixed in parallel to the middle, two load-bearing beams are fixed in parallel between the two support beams, and the support beams and the load-bearing beams are used to install inverted clamps.
[0009] Furthermore, the distance between the two load-bearing beams is slightly greater than the thickness of the square shell battery.
[0010] Furthermore, the two cross beams are in contact with the top of the square-shell battery.
[0011] Furthermore, the base, support frame, cross beam, support beam and load-bearing beam are fixed by L-shaped connectors and screws, and are all made of aluminum profiles.
[0012] Beneficial effect: The utility model places the battery upside down on the tooling. During the thermal runaway test, when the explosion-proof valve breaks, the electrolyte will immediately flow downward due to the influence of gravity. At the same time, a large amount of smoke and some sparks will be emitted from the battery. Because the electrolyte will flow out in advance, the sparks cannot contact the fallen electrolyte, thereby improving the pass rate of the thermal runaway test. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the square shell battery inversion test tooling according to an embodiment of the utility model;
[0015] Figure 2 This is a front view of the square shell battery inversion test tool described in an embodiment of the utility model;
[0016] Figure 3 A side view of the square shell battery inversion test tool according to an embodiment of the utility model;
[0017] Figure 4 It is a top view of the square shell battery inversion test tool described in an embodiment of the utility model. DETAILED DESCRIPTION
[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0020] Example 1
[0021] See also Figure 1-4 : A square shell battery inversion test tool, comprising a tool body 1, on which an inversion clamp 2 is arranged, and the inversion clamp 2 is used to clamp an inverted square shell battery 3 to perform a thermal runaway test on it.
[0022] In this embodiment, the battery is placed upside down on the tooling. During the thermal runaway test, when the explosion-proof valve breaks, the electrolyte will immediately flow downward due to the influence of gravity. At the same time, a large amount of smoke and some sparks will be emitted from the battery. Because the electrolyte will flow out in advance, the sparks will not come into contact with the fallen electrolyte, thereby improving the pass rate of the thermal runaway test.
[0023] In a specific example, the inverted fixture 2 includes an outer clamping plate and an inner heating plate, wherein the heating plate is used to heat the inverted square shell battery 3, and the clamping plate is used to clamp and fix the heating plate and the inverted square shell battery 3.
[0024] In a specific example, a counterweight 4 is disposed at the bottom of the tool body 1 .
[0025] This embodiment takes into account that the thermal runaway test battery may generate a relatively large reverse thrust when the pressure is released from the explosion-proof valve, which may cause the tooling to shake or even risk tipping over. Therefore, a counterweight is added to the base of the tooling.
[0026] In a specific example, the tooling body 1 includes a base 101, four support frames 102 are vertically fixed on the base 101, two cross beams 103 are fixed in parallel on the top of the support frame 102, two support beams 104 are fixed in parallel in the middle, two load-bearing beams 105 are fixed in parallel between the two support beams 104, and the support beams 104 and the load-bearing beams 105 are used to install the inverted clamp 2.
[0027] In a specific example, the distance between the two load-bearing beams 105 is slightly greater than the thickness of the square-shell battery 3 .
[0028] The distance between the two load-bearing beams of this embodiment is slightly larger than the thickness of the square shell battery, so as to prevent the explosion-proof valve of the battery from failing to open normally and affecting the test accuracy.
[0029] In a specific example, the two cross beams 103 are in contact with the top of the square-shell battery 3 .
[0030] The two crossbeams of this embodiment can apply a certain pressure to the battery to prevent the battery from breaking through the crossbeams due to being unfixed when the battery is under pressure relief, thereby causing safety risks in the test.
[0031] In a specific example, the base 101, the support frame 102, the cross beam 103, the support beam 104, and the load-bearing beam 105 are fixed by L-shaped connectors and screws, and all of them are aluminum profiles.
[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A square shell battery inversion test tool, characterized in that: It comprises a tool body (1), on which an inverted clamp (2) is arranged, and the inverted clamp (2) is used to clamp an inverted square shell battery (3) to perform a thermal runaway test on it.
2. The square shell battery inversion test tool according to claim 1, characterized in that: The inverted clamp (2) comprises an outer clamping plate and an inner heating plate, the heating plate is used to heat the inverted square shell battery (3), and the clamping plate is used to clamp and fix the heating plate and the inverted square shell battery (3).
3. The square shell battery inversion test tool according to claim 1, characterized in that: A counterweight block (4) is provided at the bottom of the tool body (1).
4. The square shell battery inversion test tool according to claim 1, characterized in that: The tool body (1) comprises a base (101), four support frames (102) are vertically fixed on the base (101), two cross beams (103) are fixed in parallel on the top of the support frame (102), two support beams (104) are fixed in parallel in the middle, two load-bearing beams (105) are fixed in parallel between the two support beams (104), and the support beams (104) and the load-bearing beams (105) are used to install the inverted clamp (2).
5. The square shell battery inversion test tool according to claim 4, characterized in that: The distance between the two load-bearing beams (105) is slightly greater than the thickness of the square-shell battery (3).
6. The square shell battery inversion test tool according to claim 4, characterized in that: The two cross beams (103) are in contact with the top of the square-shell battery (3).
7. The square shell battery inversion test tool according to claim 4, characterized in that: The base (101), the support frame (102), the crossbeam (103), the support beam (104), and the load-bearing beam (105) are fixed by L-shaped connectors and screws, and are all made of aluminum profiles.