Battery test fixture and battery safety test system

Abstract

The utility model provides a kind of battery test tool and battery safety test system, it is related to battery testing technical field. Including: rack, supporting piece, movable piece and elastic compression piece;Supporting piece is connected to rack, and supporting piece upper has the test area for accommodating measured battery;Movable piece is movably connected to rack or supporting piece;Elastic compression piece is installed in rack or supporting piece, and elastic compression piece acts on movable piece, and has the tendency of making movable piece compress measured battery. Even if measured battery instantaneous violent reaction in testing process, elastic compression piece also drives movable piece to keep the compression state to measured battery, can effectively avoid measured battery to loosen in testing process, improve the stability of measured battery, can keep measured battery wiring and temperature detection signal stable, it is favorable to improve the accuracy and reliability of battery safety test.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery testing fixture and a battery safety testing system. Background Technology

[0002] Conducting battery safety tests in an adiabatic environment typically requires securing the battery, observing its shape changes through a viewing window, and using aluminum foil tape to bind thermocouples to the battery surface to collect temperature data during the test. However, battery safety tests may experience sudden and violent reactions, which can easily lead to fixture deformation, battery loosening and detachment, and thermocouple loosening, resulting in temperature signal loss and affecting the accuracy and reliability of the test data. Utility Model Content

[0003] The purpose of this invention is to provide a battery testing fixture and a battery safety testing system to alleviate the technical problem of the battery being tested easily becoming loose during battery testing.

[0004] In the first aspect, the battery testing fixture provided by this utility model includes: a frame, a support, a movable part, and an elastic clamping part;

[0005] The support is connected to the frame, and the support has a test area above it for accommodating the battery under test.

[0006] The movable component is movably connected to the frame or the support component;

[0007] The elastic clamping member is mounted on the frame or the support member, and the elastic clamping member acts on the movable member and has a tendency to press the movable member against the battery under test.

[0008] In conjunction with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the support member includes: a first guide rod and a second guide rod;

[0009] The first guide rod and the second guide rod are spaced apart and arranged in parallel.

[0010] The movable component slides along the first guide rod and / or the second guide rod.

[0011] In conjunction with the first aspect, this utility model provides a second possible implementation of the first aspect, wherein the elastic clamping member includes a spring and an adjusting member;

[0012] The adjusting member is installed on the support member, and the spring is pressed between the adjusting member and the movable member.

[0013] In conjunction with the first aspect, this utility model provides a third possible implementation of the first aspect, wherein the movable member is provided with a mounting portion extending above the test area, and the mounting portion is equipped with a temperature detection device for detecting the temperature of the battery under test.

[0014] In conjunction with the third possible implementation of the first aspect, this utility model provides a fourth possible implementation of the first aspect, wherein the temperature detection device includes: a temperature measuring end and a compression spring;

[0015] The compression spring is installed between the temperature measuring end and the mounting part, and the temperature measuring end abuts against the battery being tested.

[0016] In conjunction with the fourth possible implementation of the first aspect, this utility model provides a fifth possible implementation of the first aspect, wherein the temperature measuring end is connected to a screw, the screw passes through the compression spring and the mounting part from bottom to top, and the screw is fitted with a pre-tightening member, the pre-tightening member abutting against the upper surface of the mounting part.

[0017] In conjunction with the first aspect, this utility model provides a sixth possible implementation of the first aspect, wherein the frame has a wiring arm opposite to the movable member, and one of the wiring arms is connected to a positive terminal connector and the other is connected to a negative terminal connector.

[0018] In conjunction with the sixth possible implementation of the first aspect, this utility model provides a seventh possible implementation of the first aspect, wherein both the positive electrode connector and the negative electrode connector include: a copper wire and an insulating ceramic component sleeved on the copper wire.

[0019] In conjunction with the sixth possible implementation of the first aspect, this utility model provides an eighth possible implementation of the first aspect, wherein the positive electrode connector and the negative electrode connector are respectively connected to high-temperature resistant wiring.

[0020] Secondly, the battery safety testing system provided by this utility model includes the battery testing fixture described in the first aspect.

[0021] The present invention provides the following beneficial effects: a support member is connected to the frame, and a test area for accommodating the battery under test is located above the support member. A movable member is movably connected to the frame or support member, and an elastic clamping member is installed on the frame or support member. The elastic clamping member acts on the movable member and tends to press the movable member against the battery under test. Even if the battery under test reacts violently during the test, the elastic clamping member will drive the movable member to maintain the pressure on the battery under test, which can effectively prevent the battery under test from coming loose during the test, improve the stability of the battery under test, and thus ensure stable wiring of the battery under test and accurate and reliable test data.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A front view of the battery testing fixture provided in an embodiment of this utility model;

[0025] Figure 2 A schematic diagram of the battery testing fixture and the battery under test provided in this embodiment of the utility model. Figure 1 ;

[0026] Figure 3 A schematic diagram of the battery testing fixture and the battery under test provided in this embodiment of the utility model. Figure 2 .

[0027] Icons: 100 - Frame; 110 - Wiring arm; 200 - Support component; 210 - First guide rod; 220 - Second guide rod; 300 - Moving part; 310 - Mounting part; 400 - Elastic clamping component; 410 - Spring; 420 - Adjusting component; 500 - Temperature detection device; 510 - Temperature measuring end; 520 - Compression spring; 530 - Screw; 540 - Preload component; 600 - Battery under test; 700 - Insulating ceramic component; 800 - High temperature resistant wiring. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are only used to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figure 1 and Figure 2 As shown, the battery testing fixture provided in this embodiment of the present invention includes: a frame 100, a support member 200, a movable member 300, and an elastic clamping member 400; the support member 200 is connected to the frame 100, and has a test area above it for accommodating the battery 600 under test; the movable member 300 is movably connected to the frame 100 or the support member 200; the elastic clamping member 400 is installed on the frame 100 or the support member 200, and the elastic clamping member 400 acts on the movable member 300 and has a tendency to cause the movable member 300 to press the battery 600 under test.

[0032] In optional implementations, the support 200 can be a rectangular tray or similar device to support pouch batteries; alternatively, the support 200 can be configured as a tray with a limiting groove that can accommodate cylindrical batteries. During testing, the elastic clamping member 400 clamps the movable member 300, thereby pressing the battery under test 600 against the movable member 300, ensuring the stability of the battery under test 600 during testing. When the battery under test 600 experiences a sudden and violent reaction and undergoes a change in its dimensions, the movable member 300 can move accordingly with the deformation of the battery under test 600, and the elastic clamping member 400 maintains the pressure of the movable member 300 on the battery under test 600, improving the stability of the battery under test 600, and thus ensuring stable wiring and accurate and reliable test data.

[0033] like Figure 2 and Figure 3 As shown in the embodiment of this utility model, the support member 200 includes: a first guide rod 210 and a second guide rod 220; the first guide rod 210 and the second guide rod 220 are spaced apart and arranged in parallel; the movable member 300 slides along the first guide rod 210 and / or the second guide rod 220.

[0034] The first guide rod 210 and the second guide rod 220 are spaced apart by a certain distance, which is less than the width of the battery 600 being tested. If the battery 600 is a cylindrical battery, its axis can be parallel to the first guide rod 210 and the second guide rod 220. When the distance between the first guide rod 210 and the second guide rod 220 is less than the diameter of the cylindrical battery, the cylindrical battery can be supported by both the first guide rod 210 and the second guide rod 220. The movable member 300 can slidably engage with either the first guide rod 210 or the second guide rod 220. Alternatively, the movable member 300 can be provided with two mounting holes corresponding to the first guide rod 210 and the second guide rod 220, with the first guide rod 210 and the second guide rod 220 passing through the corresponding mounting holes, allowing the movable member 300 to slide smoothly on the first guide rod 210 and the second guide rod 220.

[0035] Furthermore, the elastic clamping member 400 includes a spring 410 and an adjusting member 420; the adjusting member 420 is mounted on the support member 200 and presses the spring 410 between the adjusting member 420 and the movable member 300.

[0036] In an optional embodiment, multiple locking positions can be provided at intervals on the support member 200, and the adjusting member 420 can be installed in different locking positions to change the preload of the spring 410, thereby adjusting the elastic force applied by the spring 410 to the movable member 300.

[0037] In this embodiment, springs 410 are respectively sleeved on the first guide rod 210 and the second guide rod 220, and the adjusting member 420 is configured as a nut. Nuts are connected to the first guide rod 210 and the second guide rod 220 respectively. The springs 410 are pressed between the movable member 300 and the nut. The preload of the springs 410 can be adjusted by turning the nut, thereby changing the pressing force of the movable member 300 on the battery 600 under test in the initial state.

[0038] See Figure 2 The movable component 300 is provided with a mounting portion 310 extending above the test area. The mounting portion 310 is equipped with a temperature detection device 500 for detecting the temperature of the battery under test 600. The mounting portion 310 extends in a direction parallel to the support member 200, and the temperature detection device 500 is connected to the mounting portion 310, so that the temperature detection device 500 is directly facing the battery under test 600 located on the support member 200.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, the temperature detection device 500 includes a temperature sensing end 510 and a compression spring 520. The compression spring 520 is installed between the temperature sensing end 510 and the mounting part 310, and causes the temperature sensing end 510 to abut against the battery 600 under test. When the battery 600 under test deforms during the charge-discharge test, the temperature sensing end 510 will remain in contact with the battery 600 under test under the action of the compression spring 520, thereby avoiding interruption of temperature signal detection.

[0040] Furthermore, the temperature measuring end 510 is connected to a screw 530, which passes from bottom to top through the compression spring 520 and the mounting part 310. A preload 540 is fitted onto the screw 530, abutting against the upper surface of the mounting part 310. The compression degree of the compression spring 520 can be adjusted by turning the preload 540, thereby changing the pressure of the temperature measuring end 510 on the battery 600 being tested. The compression spring 520 is sleeved on the screw 530, and the screw 530 is slidable axially relative to the mounting part 310. This prevents the compression spring 520 from loosening or shifting, and ensures that the temperature measuring end 510 presses the battery 600 being tested along the axial direction of the screw 530, guaranteeing the accuracy and reliability of the temperature detection data.

[0041] like Figure 2 and Figure 3 As shown, the frame 100 has a wiring arm 110 opposite to the movable member 300. One of the wiring arm 110 and the movable member 300 is connected to a positive terminal connector, and the other is connected to a negative terminal connector. The test area above the support member 200 is located between the wiring arm 110 and the movable member 300. When the battery under test 600 is pressed between the wiring arm 110 and the movable member 300, the positive terminal connector and the negative terminal connector respectively connect to the battery under test 600.

[0042] Furthermore, both the positive and negative terminals include copper wires and an insulating ceramic component 700 that houses the copper wires. The tested battery 600 is connected using high-temperature resistant copper wires, and the heat transferred to the frame 100 is reduced by the insulating ceramic component 700.

[0043] It should be noted that both the frame 100 and the moving parts 300 can be made of aluminum alloy, which has thermal characteristics similar to those of lithium batteries. This is especially suitable for cases where the battery 600 under test is a lithium battery, and can reduce the impact of the tooling heating on the test results of the battery 600 under high temperature conditions.

[0044] In addition, the positive and negative terminals are respectively connected to high-temperature resistant wiring 800. The high-temperature resistant wiring 800 extends to the outside of the heat insulation environment, and voltage detection devices, charging and discharging devices, and data analysis instruments can be set in the outside non-high temperature and dangerous areas. Both voltage detection devices and charging and discharging devices can be connected to the high-temperature resistant wiring 800 to perform voltage detection and charging and discharging on the battery 600 under test.

[0045] The battery safety testing system provided in this embodiment includes the battery testing fixture described in the above-described embodiments. The battery safety testing system may further include a voltage detection device, a charging / discharging device, and a data analysis instrument. The voltage detection device and temperature detection device 500 are respectively connected to the data analysis instrument, and can detect and record the voltage and temperature of the battery under test 600 during charging or discharging at different rates. The analysis of battery performance parameters can be performed with reference to the corresponding performance indicators of the battery under test 600, which will not be elaborated here. The battery safety testing system described in this embodiment utilizes the above-described battery testing fixture, and therefore possesses the technical advantages of the above-described battery testing fixture. It can keep the battery under test 600 stable during instantaneous violent reactions, thereby accurately obtaining the temperature and voltage data during instantaneous violent reactions, which is beneficial to improving the accuracy and reliability of battery safety testing.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery testing fixture, characterized in that, include: The frame (100), support (200), movable parts (300), and elastic clamping parts (400); The support member (200) is connected to the frame (100), and the support member (200) has a test area above it for accommodating the battery under test (600); The movable component (300) is movably connected to the frame (100) or the support component (200); The elastic clamping member (400) is mounted on the frame (100) or the support member (200), and the elastic clamping member (400) acts on the movable member (300) and has a tendency to press the movable member (300) against the battery under test (600).

2. The battery testing fixture according to claim 1, characterized in that, The support member (200) includes: a first guide rod (210) and a second guide rod (220); The first guide rod (210) and the second guide rod (220) are spaced apart and arranged in parallel; The movable part (300) slides along the first guide rod (210) and / or the second guide rod (220).

3. The battery testing fixture according to claim 1, characterized in that, The elastic clamping member (400) includes a spring (410) and an adjusting member (420); The adjusting member (420) is mounted on the support member (200) and the spring (410) is pressed between the adjusting member (420) and the movable member (300).

4. The battery testing fixture according to claim 1, characterized in that, The movable part (300) is provided with a mounting part (310) extending above the test area, and the mounting part (310) is equipped with a temperature detection device (500) for detecting the temperature of the battery under test (600).

5. The battery testing fixture according to claim 4, characterized in that, The temperature detection device (500) includes: a temperature measuring end (510) and a compression spring (520); The compression spring (520) is installed between the temperature measuring end (510) and the mounting part (310), and the temperature measuring end (510) abuts against the battery under test (600).

6. The battery testing fixture according to claim 5, characterized in that, The temperature measuring end (510) is connected to a screw (530), which passes through the compression spring (520) and the mounting part (310) from bottom to top. The screw (530) is fitted with a pre-tightening member (540), which abuts against the upper surface of the mounting part (310).

7. The battery testing fixture according to claim 1, characterized in that, The frame (100) has a wiring arm (110) opposite to the movable member (300), and the wiring arm (110) is connected to a positive terminal connector and the movable member (300) is connected to a negative terminal connector.

8. The battery testing fixture according to claim 7, characterized in that, Both the positive electrode connector and the negative electrode connector include: a copper wire and an insulating ceramic component (700) sleeved on the copper wire.

9. The battery testing fixture according to claim 7, characterized in that, The positive electrode connector and the negative electrode connector are respectively connected to high temperature resistant wiring (800).

10. A battery safety testing system, characterized in that, The battery safety testing system includes the battery testing fixture as described in any one of claims 1-9.

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