Voltage detection device of square battery cell

Abstract

The utility model belongs to the field of battery cell detection, and particularly relates to a voltage detection device for a square battery cell, which is convenient to operate during detection, only the square battery cell needs to be inserted into a detection position formed between two sliding rails from an insertion end through two sliding grooves, and after the square battery cell is completely inserted into the detection position, the square battery cell can be detected. The positive electrode test probe and the negative electrode test probe abut against the positive pole and the negative pole of the square battery cell respectively to achieve electrical conduction, the voltage of the square battery cell can be detected through the voltage detection meter, and after detection is completed, the square battery cell can be pulled out from the position between the two sliding rails.

Description

Technical Field

[0001] The present application relates to the technical field of battery cell detection, and in particular to a voltage detection device for a square battery cell. Background Art

[0002] Power batteries are the core components of new energy vehicles and an important direction for future energy transformation. The battery cell is a key component of the power battery. The stability of the battery cell is related to the normal operation of the entire power battery. Therefore, in the production process of the battery cell, not only the product quality of the battery cell must be guaranteed, but also the battery cell must be re-tested before leaving the factory to ensure the normal use of the battery cell. The voltage detection of the battery cell is the most critical link in the factory inspection of the battery cell. Whether the voltage is stable is related to the quality of the entire battery cell.

[0003] At present, when the voltage of square battery cells is tested before leaving the factory, two detection electrodes of the voltage measuring circuit / meter are usually electrically contacted with the positive and negative electrodes of the battery cells respectively, so as to detect the voltage of the battery cells, which is inconvenient to operate and has low efficiency. Utility Model Content

[0004] The embodiment of the present application provides a voltage detection device for a square battery cell, aiming to reduce the difficulty of operating the square battery cell and improve the detection efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides a voltage detection device for a square battery cell, comprising:

[0006] A limit assembly, comprising two parallel and spaced slide rails, a detection position is formed between the two slide rails, the opposite inner sides of the two slide rails are provided with slide grooves along the length direction of the slide rails, the width of the slide grooves is adapted to the thickness of the square battery cell, the distance between the two slide grooves is adapted to the width of the square battery cell, one end of the two slide rails forms an insertion end, and the square battery cell can be inserted into the detection position from the insertion end through the two slide grooves; and

[0007] The detection component includes a voltage detection meter and a positive test probe and a negative test probe electrically connected to the voltage detection meter. The positive test probe and the negative test probe are arranged on the side of the detection position relative to the insertion end. After the square battery cell is fully inserted into the detection position, the positive test probe and the negative test probe respectively abut the positive and negative poles of the square battery cell.

[0008] Optionally, the slide rail is provided with a receiving cavity connected with the slide groove, a rolling element is rotatably provided in the receiving cavity, an elastic element is provided between the rolling element and the slide rail, and the rolling element partially protrudes from the groove wall of the slide groove under the action of the elastic element.

[0009] Optionally, the rolling member is a roller, the rotating shaft of the roller is perpendicular to the length direction of the slide rail, the accommodating cavity is provided with accommodating grooves extending along the width direction of the square battery cell on the two cavity walls on the axial direction of the roller, the two ends of the rotating shaft of the roller are respectively placed in the two accommodating grooves, the elastic member is arranged in the accommodating groove, and one end of the elastic member is connected to the groove wall of the accommodating groove away from the side of the slide groove, and the other end abuts against the rotating shaft.

[0010] Optionally, an arc-shaped plate is connected to one end of the elastic member close to the rotating shaft, and a concave surface of the arc-shaped plate abuts against the rotating shaft.

[0011] Optionally, the slide groove is provided with a guiding slope at the insertion end.

[0012] Optionally, the voltage detection device further comprises a spacing adjustment mechanism, the two slide rails are mounted on the spacing adjustment mechanism, and the spacing between the two slide rails can be adjusted under the action of the spacing adjustment mechanism.

[0013] Optionally, the spacing adjustment mechanism includes a guide rail, a fixed block, a sliding block and an adjusting screw, the fixed block is fixed to one end of the guide rail, the sliding block is slidably set on the guide rail, a through hole is penetrated on the fixed block along the length direction of the guide rail, a threaded hole is penetrated on the sliding block along the length direction of the guide rail, the adjusting screw is arranged parallel to the guide rail, one end of the adjusting screw is rotatably set in the through hole, and the other end penetrates the threaded hole and is threadedly connected to the threaded hole, and the ends of the two slide rails away from the insertion end are respectively fixed to the fixed block and the sliding block.

[0014] Optionally, a rotating handle is provided at one end of the adjusting screw away from the sliding block.

[0015] Optionally, a support rod is slidably disposed between the fixed block and the top of the sliding block, and the positive electrode test probe and the negative electrode test probe are both slidably disposed on the support rod.

[0016] The beneficial effect of the voltage detection device for the square battery cell provided by the present application is that compared with the prior art, the voltage detection device for the square battery cell of the present application is easy to operate during detection. It is only necessary to insert the square battery cell from the insertion end through the two slide grooves into the detection position formed between the two slide rails. After the square battery cell is fully inserted into the detection position, the positive test probe and the negative test probe are respectively abutted against the positive and negative poles of the square battery cell to achieve electrical conduction. The voltage of the square battery cell can be detected by a voltage detection meter. After the detection is completed, the square battery cell can be pulled out from between the two slide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] in:

[0019] Figure 1 It is a schematic diagram of a top view of a voltage detection device for a square battery cell according to an embodiment of the present application;

[0020] Figure 2 yes Figure 1 AA section structural diagram;

[0021] Figure 3 It is a cross-sectional structural schematic diagram of a spacing adjustment mechanism in a voltage detection device for a square battery cell shown in an embodiment of the present application;

[0022] Figure 4 It is a structural schematic diagram of a slide rail at an insertion end in a voltage detection device for a square battery cell shown in an embodiment of the present application.

[0023] Description of main component symbols:

[0024] 100, limit assembly; 101, detection position; 110, slide rail; 111, slide groove; 1111, guide slope; 112, accommodating cavity; 1121, accommodating groove;

[0025] 200, detection component; 210, positive electrode test probe; 220, negative electrode test probe; 230, voltage detection meter;

[0026] 300, rolling parts;

[0027] 400, elastic parts;

[0028] 500, curved plate;

[0029] 600, spacing adjustment mechanism; 610, guide rail; 620, fixed block; 630, sliding block; 640, adjustment screw; 650, rotating handle;

[0030] 700, support rod; 710, sliding sleeve. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0035] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0036] The embodiment of the present application provides a voltage detection device for a square battery cell, such as Figure 1 As shown, the voltage detection device includes a limiting component 100 and a detection component 200 .

[0037] The limit assembly 100 includes two parallel and spaced apart slide rails 110, a detection position 101 is formed between the two slide rails 110, and the relative inner sides of the two slide rails 110 are provided with slide grooves 111 along the length direction of the slide rails 110. The width of the slide groove 111 is adapted to the thickness of the square battery cell, and the distance between the two slide grooves 111 is adapted to the width of the square battery cell. One end of the two slide rails 110 forms an insertion end, and the square battery cell can be inserted into the detection position 101 from the insertion end through the two slide grooves 111.

[0038] The detection component 200 includes a voltage detection meter 230 and a positive test probe 210 and a negative test probe 220 electrically connected to the voltage detection meter 230. The positive test probe 210 and the negative test probe 220 are arranged on the side of the detection position 101 relative to the insertion end. After the square battery cell is fully inserted into the detection position 101, the positive test probe 210 and the negative test probe 220 respectively abut against the positive and negative poles of the square battery cell.

[0039] In the embodiment of the present application, the voltage detection device is easy to operate when detecting the square battery cell. The square battery cell only needs to be inserted from the insertion end through the two slide grooves 111 into the detection position 101 formed between the two slide rails 110. After the square battery cell is fully inserted into the detection position 101, the positive test probe 210 and the negative test probe 220 are respectively abutted against the positive and negative poles of the square battery cell to achieve electrical conduction. The voltage of the square battery cell can be detected by the voltage detection meter 230. After the detection is completed, the square battery cell can be pulled out from between the two slide rails 110.

[0040] In one embodiment, if Figure 1-Figure 2 As shown, the slide rail 110 is provided with a receiving chamber 112 connected to the slide groove 111, a rolling member 300 is rotatably provided in the receiving chamber 112, an elastic member 400 is provided between the rolling member 300 and the slide rail 110, and the rolling member 300 partially protrudes from the groove wall of the slide groove 111 under the action of the elastic member 400.

[0041] It can be understood that after the square battery cell is inserted into the slide groove 111 of the two slide rails 110, the rolling member 300 is pressed against the side wall of the square battery cell under the action of the elastic member 400. The rolling member 300 cooperates with the elastic member 400 to clamp the square battery cell inserted into the detection position 101, thereby improving the stability of the square battery cell between the two slide rails 110.

[0042] In a specific embodiment, Figure 1 and Figure 2As shown, the rolling element 300 is a roller, the rotating shaft of the roller is perpendicular to the length direction of the slide rail 110, and the accommodating cavity 112 is provided with accommodating grooves 1121 extending along the width direction of the square battery cell on the two cavity walls in the axial direction of the roller. Specifically, the width of the accommodating groove 1121 is roughly adapted to the diameter of the rotating shaft. The two ends of the rotating shaft of the roller are respectively placed in the two accommodating grooves 1121, and the elastic element 400 is arranged in the accommodating groove 1121, and one end of the elastic element 400 is connected to the groove wall of the accommodating groove 1121 away from the slide groove 111, and the other end abuts against the rotating shaft.

[0043] The elastic member 400 may be a spring, a reed or other member capable of providing elastic force.

[0044] Preferably, an arc plate 500 is connected to one end of the elastic member 400 close to the rotating shaft, and the concave surface of the arc plate 500 abuts against the rotating shaft. The arc plate 500 increases the contact / force bearing area of ​​the rotating shaft, thereby improving the stability of the rotating shaft rotation.

[0045] In another specific embodiment, not shown in the figure, the rolling element can also be a ball, the size of the opening connecting the accommodating cavity and the slide groove is smaller than the diameter of the ball, and the elastic element elastically presses the ball against the opening and makes the ball partially protrude from the opening.

[0046] In one embodiment, if Figure 4 As shown, the slide groove 111 is provided with a guiding inclined surface 1111 at the insertion end, and the design of the guiding inclined surface 1111 facilitates the insertion of the square battery cell.

[0047] In one embodiment, if Figure 1 As shown, the voltage detection device further includes a spacing adjustment mechanism 600 , and the two slide rails 110 are mounted on the spacing adjustment mechanism 600 , and the spacing between the two slide rails 110 can be adjusted under the action of the spacing adjustment mechanism 600 .

[0048] It can be understood that the distance between the two slide rails 110 depends on the width of the square battery cell. The distance between the two slide rails 110 can be adjusted by the distance adjustment mechanism 600 to make it suitable for square battery cells of different widths, thereby expanding the application range of the voltage detection device.

[0049] In a specific embodiment, Figure 1 and Figure 3As shown, the spacing adjustment mechanism 600 includes a guide rail 610, a fixed block 620, a sliding block 630 and an adjusting screw 640. The fixed block 620 is fixed to one end of the guide rail 610, and the sliding block 630 is slidably arranged on the guide rail 610. A through hole is penetrated on the fixed block 620 along the length direction of the guide rail 610, and a threaded hole is penetrated on the sliding block 630 along the length direction of the guide rail 610. The adjusting screw 640 is arranged parallel to the guide rail 610, and one end of the adjusting screw 640 is rotatably arranged in the through hole, and the other end penetrates the threaded hole and is threadedly connected with the threaded hole. The ends of the two slide rails 110 away from the insertion end are respectively fixed to the fixed block 620 and the sliding block 630. As set above, the spacing adjustment mechanism 600 has a simple structure, and the sliding block 630 can be driven to slide along the guide rail 610 by rotating the adjusting screw 640, thereby adjusting the spacing between the two slide rails 110, and the operation is simple and convenient.

[0050] Furthermore, a rotating handle 650 is provided at one end of the adjusting screw 640 away from the sliding block 630 , and the adjusting screw 640 can be conveniently rotated by means of the rotating handle 650 .

[0051] In a further specific embodiment, Figure 1 As shown, a support rod 700 is slidably disposed between the top of the fixed block 620 and the sliding block 630 , and both the positive electrode test probe 210 and the negative electrode test probe 220 are slidably disposed on the support rod 700 .

[0052] Specifically, the positive electrode test probe 210 and the negative electrode test probe 220 are respectively mounted on the sliding sleeve 710, and the sliding sleeve 710 is slidably mounted on the support rod 700. The distance between the positive electrode test probe 210 and the negative electrode test probe 220 is adjusted to adapt to the spacing between the positive and negative poles on square cells of different sizes.

[0053] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A voltage detection device for a square battery cell, characterized in that: include: A limit assembly, comprising two parallel and spaced slide rails, a detection position is formed between the two slide rails, the opposite inner sides of the two slide rails are provided with slide grooves along the length direction of the slide rails, the width of the slide grooves is adapted to the thickness of the square battery cell, the distance between the two slide grooves is adapted to the width of the square battery cell, one end of the two slide rails forms an insertion end, and the square battery cell can be inserted into the detection position from the insertion end through the two slide grooves; and The detection component includes a voltage detection meter and a positive test probe and a negative test probe electrically connected to the voltage detection meter. The positive test probe and the negative test probe are arranged on the side of the detection position relative to the insertion end. After the square battery cell is fully inserted into the detection position, the positive test probe and the negative test probe respectively abut the positive and negative poles of the square battery cell.

2. The voltage detection device according to claim 1, characterized in that: The slide rail is provided with a receiving cavity connected with the slide groove, a rolling element is rotatably provided in the receiving cavity, an elastic element is provided between the rolling element and the slide rail, and the rolling element partially protrudes from the groove wall of the slide groove under the action of the elastic element.

3. The voltage detection device according to claim 2, characterized in that: The rolling member is a roller, the rotating shaft of the roller is perpendicular to the length direction of the slide rail, the accommodating cavity is provided with accommodating grooves extending along the width direction of the square battery cell on the two cavity walls on the axial direction of the roller, the two ends of the rotating shaft of the roller are respectively placed in the two accommodating grooves, the elastic member is arranged in the accommodating groove, and one end of the elastic member is connected to the groove wall of the accommodating groove away from the slide groove, and the other end abuts against the rotating shaft.

4. The voltage detection device according to claim 3, characterized in that: An end of the elastic member close to the rotating shaft is connected with an arc plate, and a concave surface of the arc plate abuts against the rotating shaft.

5. The voltage detection device according to claim 1, characterized in that: The slide groove is provided with a guiding inclined surface at the insertion end.

6. The voltage detection device according to any one of claims 1 to 5, characterized in that: The voltage detection device also includes a spacing adjustment mechanism, the two slide rails are mounted on the spacing adjustment mechanism, and the spacing between the two slide rails can be adjusted under the action of the spacing adjustment mechanism.

7. The voltage detection device according to claim 6, characterized in that: The spacing adjustment mechanism includes a guide rail, a fixed block, a sliding block and an adjusting screw, the fixed block is fixed to one end of the guide rail, the sliding block is slidably arranged on the guide rail, a through hole is penetrated on the fixed block along the length direction of the guide rail, a threaded hole is penetrated on the sliding block along the length direction of the guide rail, the adjusting screw is arranged parallel to the guide rail, one end of the adjusting screw is rotatably arranged in the through hole, and the other end penetrates the threaded hole and is threadedly connected to the threaded hole, and the ends of the two slide rails away from the insertion end are respectively fixed to the fixed block and the sliding block.

8. The voltage detection device according to claim 7, characterized in that: A rotating handle is arranged at one end of the adjusting screw away from the sliding block.

9. The voltage detection device according to claim 7, characterized in that: A support rod is slidably arranged between the fixed block and the top of the sliding block, and the positive electrode test probe and the negative electrode test probe are both slidably arranged on the support rod.

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