CN203037743U - Adjustable internal resistance testing device of cell - Google Patents

Abstract

The utility model discloses an adjustable internal resistance testing device of a cell. The device comprises a pedestal, an upper test pressure head and a lower test pressure head, wherein the upper test pressure head and the lower test pressure head are used to clamp two end poles of a monomer cell. The pedestal is provided with a working surface. The upper test pressure head is fixed on the working surface. The lower test pressure head is fixed on a sliding rack. The sliding rack can move up and down on the working surface relatively to the upper test pressure head. Compared to the prior art, by using the adjustable internal resistance testing device of the cell, a spacing between the upper test pressure head and the lower test pressure head is adjusted through pushing the sliding rack arranged on the working surface of the pedestal so that test demands of the monomer cells with different specifications can be satisfied. And because of structure cooperation of the sliding rack and a clamping groove, the tested monomer cell can be replaced without using other auxiliary tools. Therefore, the device is conducive to improving working efficiency.

Description

Adjustable battery internal resistance test device

【Technical field】

The utility model relates to a testing device, in particular to a position-adjustable battery internal resistance testing device.

【Background technique】

As we all know, due to the low discharge current and low voltage characteristics of single cells, the power sources used in the existing automotive field are all in the form of groups of single cells connected in series and parallel. For a battery pack formed by several single cells connected in series and parallel, to ensure good charge and discharge performance of the battery pack, try to ensure that the differences between the individual cells are small, for example, to ensure that the capacity of the single cells is consistent , the internal resistance of the single battery is consistent, etc. Therefore, it is a necessary work to quickly measure the internal resistance of the single battery and quickly classify it according to the size of the internal resistance.

The existing battery internal resistance test devices generally have the following deficiencies: 1) The clamping structure of the test device cannot meet the clamping requirements of single batteries of different specifications; 2) When replacing a single battery, it is necessary to use auxiliary tools such as a wrench or a screwdriver The operation is cumbersome and cannot be replaced without auxiliary tools; 3) Repeated installation and removal of screws may lead to changes in the position of the clamping battery, which has a certain impact on the test results.

In view of this, it is necessary to provide an adjustable battery internal resistance testing device to solve the above problems.

【Content of utility model】

The purpose of the utility model is to provide an adjustable battery internal resistance testing device with simple design and structure, quick operation and adaptability to batteries of different specifications.

In order to achieve the above purpose, the utility model provides an adjustable battery internal resistance testing device, which includes a base and upper and lower test pressure heads for clamping the two ends of the single battery. There is a working surface, the upper testing indenter is fixed on the working surface, the lower testing indenter is fixed on the sliding frame, and the sliding frame can move up and down relative to the upper testing indenter on the working surface.

As an improvement of the battery internal resistance test device with adjustable position of the utility model, the structure of the upper and lower test indenters is consistent, and both include a casing with an external thread, a test needle partially accommodated in the casing and a test needle mounted on the Adjustment screw on the outside of the bushing.

As an improvement of the position-adjustable battery internal resistance testing device of the present invention, the sliding frame includes an L-shaped base and positioning pins arranged on the base.

As an improvement of the position-adjustable battery internal resistance testing device of the present invention, an opening is provided on the working surface of the base corresponding to the position of the sliding frame, and a locking slot is installed in the opening.

As an improvement of the battery internal resistance test device with adjustable position of the utility model, the clamping groove is a rectangular frame structure, and a groove is opened at a corresponding position on one of its opposite sides, and the groove There are several step-shaped positioning grooves on at least one inner side.

Compared with the prior art, the battery internal resistance test device with adjustable position of the utility model can adjust the distance between the upper and lower test indenters by pushing the sliding frame arranged on the working surface of the base, so as to meet the needs of different specifications of the battery. In addition, due to the structural cooperation between the sliding frame and the locking slot, the single battery under test can be replaced without other auxiliary tools. Therefore, the device helps to improve work efficiency.

【Description of drawings】

Fig. 1 is the three-dimensional view of the adjustable battery internal resistance testing device of the present invention;

Fig. 2 is the perspective view of the test pressure head of the adjustable battery internal resistance test device of the present invention;

Fig. 3 is a perspective view of the sliding frame of the adjustable battery internal resistance testing device of the present invention;

Fig. 4 is a perspective view of the sliding frame and the locking slot of the adjustable battery internal resistance testing device of the present invention;

Fig. 5 is a perspective view of the adjustable position-adjustable battery internal resistance testing device of the present invention after the cooperation between the sliding frame and the locking slot is completed.

【Detailed ways】

In order to make the purpose, technical solution and beneficial technical effects of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the utility model, not for limiting the utility model.

Please refer to Figures 1 to 5, an adjustable battery internal resistance testing device 100 of the present invention, which includes a base 10 and upper and lower test pressure heads for clamping the two ends of a single battery ( 20, 30), the base 10 is provided with a working surface 11, the upper test indenter 20 is fixed on the working surface 11, the lower test indenter 30 is fixed on the sliding frame 40, and the sliding frame 40 can be Move up and down relative to the upper test pressure head 20 on the working surface 11 .

The base 10 is roughly in the shape of a right-angled trapezoid, and its working surface 11 is an inclined surface corresponding to the sides of the right angle. An opening 12 is defined on the working surface of the base 10 at a position corresponding to the sliding frame 40 , and a locking slot 50 is installed in the opening 12 . The locking groove 50 is a rectangular frame structure, and a groove 51 is opened at a corresponding position on one of its opposite sides, and at least one inner side of the groove 51 is provided with a plurality of stepped positioning grooves 52 .

The upper and lower test indenters ( 20 , 30 ) have the same structure, and both include a casing 21 with an external thread, a test needle 22 partially accommodated in the casing, and a positioning screw 23 installed outside the casing.

The sliding frame 40 includes an L-shaped base body 41 and a positioning pin 42 provided on the base body. The positioning pin 42 is connected to the base body 41 by a cross bar 43 .

An adjustable position-adjustable battery internal resistance testing device of the utility model is assembled and used in this way: firstly, the upper test indenter is fixed on the upper part of the working surface of the base, and then the clamping groove is installed on the back of the opening of the working surface. Then, fix the lower test indenter on the base of the sliding frame, pass the sliding frame through the opening of the working surface and slide its positioning pin along one side of the side groove of the locking groove (at this time, the base of the sliding frame Both form a certain angle with the working surface) until the distance between the upper and lower test indenters matches the specifications of the battery to be tested, push the positioning pins into the positioning grooves to engage (at this time, part of the base of the sliding frame is close to the on the working plane); finally, place the battery under test between the upper and lower test pressure heads for testing. Of course, when necessary, the user can lightly adjust the position adjustment screws of the upper and lower test indenters for fine adjustment of the position.

The battery internal resistance test structure with adjustable position of the utility model is not limited to the description in the description and the implementation, so for those familiar with the field, other advantages and modifications can be easily realized, so without departing from the claims and The invention is not to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without regard to the spirit and scope of the general concepts defined by the scope of equivalents.

Claims (5)

1. An adjustable battery internal resistance testing device, which includes a base and upper and lower test indenters for clamping the two ends of a single battery, characterized in that: the base is provided with a working surface, The upper test indenter is fixed on the working surface, the lower test indenter is fixed on the sliding frame, and the sliding frame can move up and down relative to the upper test indenter on the working surface. 2. The adjustable battery internal resistance testing device according to claim 1, characterized in that: the upper and lower test indenters have the same structure, both of which include sleeves with external threads, and part of them are contained in the sleeves. Test pin and set screw mounted on the outside of the sleeve. 3 . The adjustable battery internal resistance testing device according to claim 1 , wherein the sliding frame comprises an L-shaped base and positioning pins provided on the base. 4 . 4. The adjustable battery internal resistance testing device according to claim 1, characterized in that: there is an opening on the working surface of the base corresponding to the position of the sliding frame, and a locking slot is installed in the opening . 5. The adjustable battery internal resistance testing device according to claim 4, characterized in that: the locking groove is a rectangular frame structure, and a groove is opened at a corresponding position on one of its opposite sides , at least one inner side of the groove is provided with several stepped positioning grooves.

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