CN209387782U - A battery short circuit test tool - Google Patents

Abstract

The utility model provides a battery cell short-circuit test tool, which relates to the technical field of battery cells. The cell short-circuit test tooling includes a bottom plate, a main body, a lug connecting piece, a test line, a pillar and a pressure plate; the bottom plate is provided with a main body installation groove and a plurality of pillar installation grooves, and the main body is installed in the main body installation groove Inside, the main body is provided with a cell installation slot, one side of the cell installation slot is installed with the tab connection piece and the test line electrically connected with the tab connection piece, the support is installed In the mounting groove of the pillar, the pressing plate is provided with a plurality of through holes, and the pressing plate is slidably connected to the pillar through the through holes, and the pressing plate is used to press the electric core on the main body The battery core is installed in the groove. The cell short-circuit test tooling can compress the cell when the cell is undergoing a short-circuit test, so that the cell is evenly stressed and fixed stably.

Description

A battery short circuit test tool

technical field

The utility model relates to the technical field of electric cores, in particular to a short-circuit testing tool for electric cores.

Background technique

Soft-pack lithium batteries are also called polymer batteries. Compared with lithium-ion batteries, soft-pack lithium batteries have many advantages such as small size, light weight, high specific energy, high safety, and flexible design.

Specifically, the soft-packed lithium battery has the following advantages: 1. Good safety performance: the soft-packed lithium battery is packaged in aluminum-plastic film in structure, and in the event of a safety hazard, the soft-packed lithium battery will only burst open , and will not explode like steel-cased and aluminum-cased batteries; 2. Light weight: soft-pack lithium batteries are 40% lighter than steel-cased lithium batteries of the same capacity, and 20% lighter than aluminum-cased batteries. %; 3. Large capacity: the capacity of the soft-pack lithium battery is 10% to 15% higher than that of the steel shell battery of the same specification and size, and 5% to 10% higher than that of the aluminum shell battery; 4. Small internal resistance : The internal resistance of the soft-pack lithium battery is smaller than that of the lithium battery. At present, the internal resistance of the domestic soft-pack lithium battery cell can be less than 35mΩ, which greatly reduces the self-consumption of the battery; 5. Flexible design: soft-pack lithium battery The shape of the battery can be customized according to the needs of customers, and new battery models can be developed.

During the testing process of the soft-pack lithium battery, a short-circuit test should be performed on the battery cell to maintain the yield of the battery. At present, there are still the following problems in the short-circuit test of the battery cell: 1) when the battery cell is tested, the battery cell is not pressed tightly, and the force on the battery cell is uneven; 2) the battery cell is easy to slide during the test; 3) the battery cell The test line is not fixed, and the test site is messy, which is not conducive to the pick-and-place of the battery.

Utility model content

The embodiment of the utility model provides a battery cell short-circuit test tool, which can compress the battery cell when the battery cell is subjected to a short-circuit test, so that the force on the battery cell is uniform and the battery cell is fixed stably.

The technical scheme that the utility model embodiment provides:

A battery short-circuit test tooling includes a bottom plate, a main body, a tab connecting piece, a test line, a pillar and a pressure plate; a main body installation groove and a plurality of pillar installation grooves are opened on the bottom plate, and the main body is installed in the main body installation groove Inside, the main body is provided with a cell installation slot, one side of the cell installation slot is installed with the tab connection piece and the test line electrically connected with the tab connection piece, the support is installed In the mounting groove of the pillar, the pressing plate is provided with a plurality of through holes, and the pressing plate is slidably connected to the pillar through the through holes, and the pressing plate is used to press the electric core on the main body The battery core is installed in the groove.

Further, the cell short-circuit test tool further includes a spring, the spring is installed on the surface of the main body facing the pressure plate, and the spring is used to support the pressure plate.

Further, the main body is provided with a first installation groove, and the pressure plate is provided with a second installation groove at a position corresponding to the first installation groove, and one end of the spring is located in the first installation groove, and the The other end of the spring is used to be supported in the second installation groove.

Further, the cell short-circuit test tool further includes a telescopic rod, the telescopic rod is installed on the surface of the pressure plate facing the main body, and the telescopic rod is used to support the main body.

Further, a third installation groove is opened on the surface of the pressure plate facing the main body, and the telescopic rod is installed in the third installation groove.

Further, the main body is provided with a connection piece installation groove and a first wire groove, the battery installation groove, the connection piece installation groove and the first wire groove are connected in sequence, and the tab connection piece is installed on the The connecting piece is installed in the groove, and the test line is installed in the first wire groove.

Further, a second wire slot is opened on the base plate, the second wire slot communicates with the first wire slot, and the test line is installed in the first wire slot and the second wire slot.

Further, the cell installation slot and the connection piece installation slot are opened on the surface of the main body facing the pressure plate, the first wire slot is opened on the side of the main body, the main body installation slot and the The second slot is opened on the surface of the bottom plate facing the pressing plate.

Further, the main body installation groove is a rectangular groove, and the main body is in the shape of a cuboid.

Further, the number of the pillar installation grooves is four, and the four pillar installation grooves are arranged in a matrix, the number of the pillars is four, and the number of the through holes is four.

The beneficial effects of the battery cell short-circuit test tool provided by the embodiment of the present invention are:

The main body is clamped between the bottom plate and the pressure plate, and the main body is installed in the main body installation groove of the bottom plate. In the cell installation groove, the cell is fixed and stable, and is not easy to slide. Under the action of the pressing plate, the cell is compressed and the force is even.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is a schematic diagram of the assembly structure of the cell short-circuit test tool provided by the embodiment of the present invention.

Fig. 2 is a schematic diagram of an exploded structure of the cell short-circuit test tool provided by the embodiment of the present invention.

Fig. 3 is a structural schematic diagram of the bottom plate.

Figure 4 is a schematic diagram of the structure of the main body.

Fig. 5 is a structural schematic diagram of the pressing plate.

Icons: 1-cell short-circuit test tooling; 2-base plate; 21-main body installation slot; 22-pillar installation slot; 23-second wire slot; 3-main body; 31-battery cell installation slot; 33-the first line groove; 34-the first installation groove; 4-the lug connecting piece; 5-test line; 6-pillar; 7-spring; 8-telescopic rod; The second installation slot; 93-the third installation slot; 10-the electric core.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In describing the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the utility model product is used, or the orientation or positional relationship that is commonly understood by those skilled in the art, It is only for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the utility model.

In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Please refer to Fig. 1 and Fig. 2, this embodiment provides a battery short-circuit test tool 1, the battery short-circuit test tool 1 includes a bottom plate 2, a main body 3, a tab connection piece 4, a test line 5, a pillar 6, and a spring 7 , telescopic rod 8 and pressing plate 9.

Referring to FIG. 3 , the surface of the bottom plate 2 facing the pressure plate 9 is provided with a main body installation groove 21 and a plurality of pillar installation grooves 22 , the main body installation groove 21 is a rectangular groove, and the main body installation groove 21 is located at the center of the upper surface of the bottom plate 2 . The number of support mounting slots 22 is four, and the four support mounting slots 22 are arranged in a matrix. The number of pillars 6 is four, and one pillar 6 is installed in one pillar installation groove 22 .

A second wire groove 23 is opened on the surface of the bottom plate 2 facing the pressure plate 9 , and the second wire groove 23 is used for accommodating the test wire 5 . There are two second wire grooves 23 , one end of the second wire groove 23 communicates with the main body installation groove 21 , and the other end of the second wire groove 23 extends to the side of the bottom plate 2 .

The main body 3 is installed in the main body installation groove 21, and the main body 3 is in the shape of a cuboid. The thickness of the main body 3 is greater than the depth of the main body installation groove 21 . The main body installation groove 21 can restrict the main body 3 from sliding around. The pillar 6 is installed in the pillar installation groove 22, so that the pillar 6 is vertically connected to the bottom plate 2 stably.

Referring to FIG. 4 , the surface of the main body 3 facing the pressure plate 9 is provided with a cell installation slot 31 , and the cell installation slot 31 is located in the middle of the main body 3 . The battery cell installation groove 31 is used for accommodating the battery cell 10 .

The main body 3 is provided with a connecting piece installation groove 32 and a first wire groove 33, and the cell installation groove 31, the connecting piece installation groove 32 and the first wire groove 33 are connected in sequence, and the number of connecting piece installation grooves 32 is two, the first The number of wire slots 33 is two. The battery cell installation groove 31 and the connection piece installation groove 32 are opened on the surface of the main body 3 facing the pressure plate 9 , and the first wire slot 33 is opened on the side surface of the main body 3 .

One side of the cell installation groove 31 is installed with a tab connection piece 4 and a test line 5 electrically connected to the tab connection piece 4, the tab connection piece 4 is installed in the connection piece installation groove 32, and the test line 5 is installed in the first Inside the trunking 33.

When the battery cell 10 is installed in the battery cell installation groove 31 of the main body 3 , one tab of the battery cell 10 is electrically connected to a tab connection piece 4 , and one tab connection piece 4 is electrically connected to a test line 5 . A test wire 5 is accommodated in a first wire groove 33 and a second wire groove 23 . In this way, the position of the test line 5 can be fixed, and it will not be piled up randomly, which is beneficial to the pick-and-place of the battery cell 10 .

There are four first installation grooves 34 on the surface of the main body 3 facing the pressure plate 9 , the number of the first installation grooves 34 is four, and the four first installation grooves 34 are arranged in a matrix. A spring 7 is arranged in each first installation slot 34 . The spring 7 is installed on the surface of the main body 3 facing the pressing plate 9 , and the spring 7 is used to support the pressing plate 9 . During the movement of the pressing plate 9 to the main body 3 , the spring 7 can buffer the pressing plate 9 and prevent the pressing plate 9 from causing excessive impact on the main body 3 .

Please refer to FIG. 5 , the pressing plate 9 is used to press the battery cell 10 into the battery cell installation groove 31 of the main body 3 . The pressing plate 9 is provided with a plurality of through holes 91 . Preferably, the number of the through holes 91 is four. The through holes 91 correspond to the pillar mounting grooves 22 one by one. The pressing plate 9 is slidably connected to the pillar 6 through the through holes 91 .

A plurality of second installation grooves 92 are opened on the surface of the pressure plate 9 facing the main body 3 , preferably, the number of the second installation grooves 92 is four, and the second installation grooves 92 correspond to the first installation grooves 34 one by one. One end of the spring 7 is located in the first installation slot 34 , and the other end of the spring 7 is used to be supported in the second installation slot 92 .

A third installation groove 93 is opened on the surface of the pressure plate 9 facing the main body 3 , and the telescopic rod 8 is installed in the third installation groove 93 . There are two third installation slots 93 and two telescopic rods 8 . The telescopic rod 8 is installed on the surface of the pressing plate 9 facing the main body 3 , and the telescopic rod 8 is used to support the main body 3 . The stretch has the characteristics of elastic insulation. During the movement of the pressing plate 9 to the main body 3 , the telescopic rod 8 can buffer the pressing plate 9 and prevent the pressing plate 9 from causing excessive impact on the main body 3 . The pressing plate 9 can press the battery cell 10 tightly, so that the force on the battery cell 10 is uniform, and the data test of the battery cell 10 can be more accurate during the short-circuit test of the battery cell 10 .

The cell short-circuit test tool 1 provided by the embodiment of the utility model can press the cell 10 tightly during the short-circuit test of the cell 10, so that the force on the cell 10 is uniform, the test result is accurate, and the cell 10 is prevented from sliding, avoiding The battery cell 10 is damaged, and the battery cell 10 is well protected. In addition, the test line 5 is installed in the first line slot 33 and the second line slot 23 , the position of the test line 5 is fixed, and the battery cell 10 is more convenient to take and place.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A cell short-circuit test tool, characterized in that, the cell short-circuit test tool comprises a base plate (2), a main body (3), a lug connecting piece (4), a test line (5), and a pillar (6) and a pressing plate (9); the base plate (2) is provided with a main body installation groove (21) and a plurality of pillar installation grooves (22), and the main body (3) is installed in the main body installation groove (21). The main body (3) is provided with a cell installation groove (31), and one side of the cell installation groove (31) is installed with the tab connecting piece (4) and the tab connecting piece (4) The test line (5) that is electrically connected, the pillar (6) is installed in the pillar installation groove (22), and a plurality of through holes (91) are opened on the pressure plate (9), and the pressure plate ( 9) Slidingly connected to the pillar (6) through the through hole (91), the pressing plate (9) is used to press the battery cell (10) on the battery cell installation of the main body (3) Inside the slot (31). 2. The cell short-circuit test tool according to claim 1, characterized in that, the cell short-circuit test tool also includes a spring (7), and the spring (7) is installed on the main body (3) toward the The surface of the pressing plate (9), the spring (7) is used to support the pressing plate (9). 3. The cell short-circuit test tool according to claim 2, characterized in that, the main body (3) is provided with a first installation groove (34), and the pressure plate (9) corresponds to the first installation groove (34) is provided with a second installation groove (92), one end of the spring (7) is located in the first installation groove (34), and the other end of the spring (7) is used to support the Inside the second installation groove (92). 4. The cell short-circuit test tool according to claim 1, characterized in that, the cell short-circuit test tool also includes a telescopic rod (8), and the telescopic rod (8) is installed on the pressure plate (9) toward On the surface of the main body (3), the telescopic rod (8) is used to support the main body (3). 5. The cell short-circuit test tool according to claim 4, characterized in that, a third mounting groove (93) is opened on the surface of the pressing plate (9) facing the main body (3), and the telescopic rod ( 8) Installed in the third installation groove (93). 6. The cell short-circuit test tool according to claim 1, characterized in that, the main body (3) is provided with a connection piece installation groove (32) and a first wire groove (33), and the cell installation groove (31), the connection piece installation groove (32) and the first wire groove (33) are sequentially connected, the tab connection piece (4) is installed in the connection piece installation groove (32), the The test line (5) is installed in the first line groove (33). 7. The cell short-circuit test tooling according to claim 6, characterized in that, the base plate (2) is provided with a second wire slot (23), and the second wire slot (23) is connected with the first wire slot (33) are connected, and the test line (5) is installed in the first wire groove (33) and the second wire groove (23). 8. The cell short-circuit test tool according to claim 7, characterized in that, the cell installation groove (31) and the connecting piece installation groove (32) are provided on the main body (3) facing the pressure plate (9), the first wire groove (33) is opened on the side of the main body (3), and the main body installation groove (21) and the second wire groove (23) are opened on the bottom plate ( 2) The surface facing said platen (9). 9. The cell short-circuit test tool according to claim 1, characterized in that, the main body installation groove (21) is a rectangular groove, and the main body (3) is in the shape of a cuboid. 10. The cell short-circuit test tool according to claim 1, characterized in that, the number of the support mounting grooves (22) is four, and the four support mounting grooves (22) are arranged in a matrix form, so The number of the pillars (6) is four, and the number of the through holes (91) is four.