Square battery polarity detection jig

Abstract

The utility model discloses a square battery polarity detection jig, which comprises a bottom plate, at least one identification area and a plurality of pole grooves are arranged on the bottom plate, a plurality of hollow identification positions are arranged on the identification area, and the pole grooves are arranged on the back of the bottom plate. When the number of the identification area is one, the number of the pole grooves is two, and the two pole grooves are respectively arranged on two opposite side edges of the identification area; when the number of the identification areas is more than two, the number of the pole grooves is twice that of the identification areas, and two opposite side edges of each identification area are respectively provided with one pole groove. The bottom plate is placed on the battery surface of the battery box body, the pole is embedded into the pole groove in the back face of the bottom plate, the pole cannot be seen from the front face of the bottom plate, the battery two-dimensional code at the corresponding position can be exposed out of the hollowed-out recognition position, and whether the positive electrode and the negative electrode are pasted reversely or not is recognized and judged by shooting whether the exposed area of the recognition area is the battery two-dimensional code or not. And misjudgment caused by shooting of a pole picture is avoided, so that the detection accuracy is greatly improved, and potential safety hazards caused by reverse connection of the positive electrode and the negative electrode are also prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, and in particular to a square battery polarity detection jig. Background Art

[0002] Prismatic lithium batteries offer advantages such as high packaging reliability, high system energy efficiency, relatively light weight, high energy density, simple structure, easy expansion, large cell capacity, simple system configuration, and excellent stability. These advantages make prismatic lithium batteries excellent in many applications. For example, due to their large capacity and low internal resistance, prismatic batteries are well-suited for high-current discharge requirements, making them a near-standard feature in electric vehicles. Prismatic lithium batteries are also widely used in wireless devices, industrial equipment, and medical equipment.

[0003] As the basic unit of a battery module, the correct connection of its positive and negative polarity is essential to ensure the normal operation of the battery module. Incorrect polarity connection will not only lead to degraded battery module performance, but may also cause serious safety accidents such as short circuits, overheating, and even explosions. Therefore, polarity detection plays an irreplaceable role in the production process of battery modules.

[0004] Existing polarity detection technology relies on a motor-driven camera device to capture a picture of the battery's QR code and transmit the picture to the control module's display screen for the user to judge, or test software to judge the picture to detect whether the positive and negative poles are reversed. However, the poles and the battery QR code are highly similar when photographed visually, which poses a risk of misjudgment, quality issues, and safety hazards. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a square battery polarity detection fixture to solve the quality problems and safety hazards caused by the risk of misjudgment during the existing battery polarity detection.

[0006] The utility model discloses a square battery polarity detection jig, comprising: a base plate, at least one identification area and a plurality of pole slots are provided on the base plate, a plurality of hollow identification positions are provided on the identification area, and the pole slots are provided on the back side of the base plate. When there is one identification area, there are two pole slots, and the two pole slots are provided on two opposite sides of the identification area. When there are more than two identification areas, the number of pole slots is twice the number of identification areas, and each identification area is provided with a pole slot on two opposite sides. The identification areas are arranged side by side in sequence, and the plurality of pole slots are arranged in sequence along the arrangement direction of the identification areas.

[0007] Preferably, the hollow identification position includes a plurality of identification holes, wherein two identification holes are respectively provided on the other two opposite sides of the identification area, and the identification holes are staggered in the identification area.

[0008] Preferably, the hollow identification position includes a plurality of identification holes and two identification grooves, the two identification grooves are respectively arranged on the other two opposite sides of the identification area, and the identification grooves and the identification holes are staggered on the identification area.

[0009] Preferably, the identification hole is surrounded by four first inner walls, the first inner walls forming a first angle ∠1 with the back of the base plate, the first angle ∠1 being greater than 90 degrees but less than 180 degrees. The identification groove is surrounded by three second inner walls and is open at one end, the second inner walls forming a second angle ∠2 with the back of the base plate, the second angle ∠2 being greater than 90 degrees but less than 180 degrees.

[0010] Preferably, the first inner wall includes a first inclined wall and a first straight wall, the first straight wall is perpendicular to the back of the base plate, the first inclined wall and the back of the base plate form a first angle ∠1, and the first inclined wall is connected to the first straight wall and forms a third angle ∠3, the third angle ∠3 is greater than 180 but less than 270 degrees.

[0011] Preferably, the second inner wall includes a second inclined wall and a second straight wall, the second straight wall is perpendicular to the base plate, the second inner wall forms a second angle ∠2 with the back of the base plate, and the second inclined wall is connected to the second straight wall and forms a fourth angle ∠4, and the fourth angle ∠4 is greater than 180 but less than 270 degrees.

[0012] Preferably, the second inner wall further includes a third inclined wall, which is connected to the lower end of the second straight wall and forms a fifth angle ∠5, and the fifth angle ∠5 is greater than 180 but less than 270 degrees.

[0013] Preferably, it further comprises handles, which are arranged on both sides of the front side of the base plate.

[0014] Preferably, it further comprises a pointing mark, which is arranged on the front side of the base plate.

[0015] Preferably, the bottom plate is made of insulating material.

[0016] The beneficial effect of the present invention is that the bottom plate is placed on the battery surface of the battery box, the battery pole is embedded in the pole slot on the back of the bottom plate, and the hollow identification position will reveal the battery QR code at the corresponding position. If all batteries are placed correctly, that is, all QR codes can appear in the identification area, then the camera equipment can shoot and identify the QR code at this time. When the positive and negative poles of the battery are reversed, the hollow identification position corresponding to the reversed battery will not have a QR code, so it can be determined that the positive and negative poles of the battery are reversed, and timely processing can be made. By providing this square battery polarity detection fixture, the poles of the battery can be covered to prevent the poles from being mistakenly identified as QR codes due to the appearance of the positive and negative poles in the detection screen during detection, thereby affecting the detection results. The detection accuracy is greatly improved, and the safety hazards caused by the reverse connection of the positive and negative poles are also prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a front view of a square battery polarity detection fixture.

[0019] Figure 2 This is a schematic diagram of the back side of a square battery polarity detection fixture;

[0020] Figure 3 This is another front view of the square battery polarity detection fixture;

[0021] Figure 4 This is another back view of the square battery polarity detection fixture;

[0022] Figure 5 This is a top view of the square battery polarity detection fixture in use;

[0023] Figure 6 A top view of the battery box in the embodiment;

[0024] Figure 7 This is a cross-sectional view of a square battery polarity detection fixture;

[0025] Figure 8 This is an enlarged view of the cross-section of part A of the square battery polarity detection fixture;

[0026] Figure 9 This is an enlarged view of the cross-section of part B of the square battery polarity detection fixture;

[0027] Figure 10 This is the second enlarged view of the cross-section B of the square battery polarity detection fixture;

[0028] Figure 11 This is the third enlarged view of the cross-section B of the square battery polarity detection fixture.

[0029] Reference numerals:

[0030] 1. Bottom plate; 11. Identification area; 111. Hollow identification position; 1111. Identification hole; 11111. First inner wall; 11112. First slanted wall; 11113. First straight wall; 1112. Identification groove; 11121. Second inner wall; 11122. Second slanted wall; 11123. Second straight wall; 11124. Third slanted wall; 12. Pole slot;

[0031] 2. Handle; 3. Direction mark; 4. Battery case; 5. Battery; 51. Battery QR code; 52. Terminal. DETAILED DESCRIPTION

[0032] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0033] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] See also Figures 1 to 4 As shown, Figure 1 This is a front view of a square battery polarity detection fixture. Figure 2 This is a schematic diagram of the back side of a square battery polarity detection fixture. Figure 3 This is another front view of the square battery polarity detection fixture. Figure 4 This is another schematic diagram of the back of a square battery polarity detection jig. This embodiment discloses a square battery polarity detection jig comprising a base plate 1, which is provided with at least one identification area 11 and multiple terminal slots 12. There can be one identification area 11, or two or more identification areas. When there are two or more identification areas, all identification areas 11 are arranged side by side. Furthermore, each identification area 11 is provided with multiple hollow identification positions 111.

[0035] The pole slot 12 is provided on the back of the base plate 1. In this example, the pole slot 12 is a square slot. Correspondingly, when there is one identification area 11, there are two pole slots 12. The two pole slots 12 are respectively arranged on two opposite sides of the identification area 11, that is, one pole slot 12 is provided on one side of the identification area 11, and one pole slot 12 is provided on the other side of the identification area 11, and the two pole slots 12 are directly opposite. When there are two or more identification areas, in order to ensure that there are pole slots 12 on both sides of each identification area 11, the number of pole slots 12 is twice the number of the identification areas 11. At this time, there is a pole slot 12 on two opposite sides of each identification area 11, and the arrangement direction of the pole slots 12, which is twice the number of the identification areas 11, is the same as the arrangement direction of the identification areas.

[0036] Review Figure 1 and Figure 2 As shown, when one identification area 11 is provided on the base plate 1, the number of the pole slots 12 is two, and they are respectively provided on two opposite sides of the identification area 11. The pole slot 12 is surrounded by three sides and is open at one end, and the opening direction is toward the back side of the base plate 1. The hollow identification positions 111 on the identification area 11 form two rows of staggered distribution.

[0037] Review Figure 3 and Figure 4 As shown, two identification areas 11 are provided on the base plate 2, and the number of pole slots 12 is four. The identification areas 11 are arranged side by side, and the pole slots 12 are arranged on the opposite sides of the identification area 11 in sequence according to the arrangement direction of the identification areas 11, that is, two pole slots 12 are provided on both sides of an identification area 11, and one pole slot 12 cannot be shared by two identification areas 11.

[0038] See also Figure 5 and Figure 6 As shown, Figure 5 This is a top view of the square battery polarity detection fixture in use. Figure 6It is a top view of the battery box in the embodiment. In this embodiment, when a square battery polarity detection jig is used, the batteries are stacked in the battery box, one side of the battery box is open, and the bottom plate 1 is buckled at the opening so that a plurality of hollow identification positions 111 are opened on the identification area 11 and are set one-to-one with a plurality of battery QR codes 51, and the hollow identification positions 111 completely reveal the battery QR code 51. The depth of the pole slot 12 corresponds to the height of the protrusion of the pole 52, and its area is larger than the area of ​​the pole 52, so that the pole 52 is accommodated in the pole slot 12, the back of the bottom plate 1 is attached to the surface of the battery, and the pole 52 is not visible on the front of the bottom plate 1. In other words, according to the position of the battery QR code 51 and the position of the pole 52, the hollow identification position 111 can be opened at the corresponding position of the identification area 11, and the pole slot 12 can be opened at the corresponding position of the bottom plate 1, so that the hollow identification position 111 can correspond one-to-one with the position of the battery QR code 51, and the pole slot 12 can correspond to the pole 52.

[0039] The bottom plate 1 is made of an existing insulating material and can be made of bakelite, or other insulating materials such as glass fiber, polyvinyl chloride, and resin. The bottom plate 1 is square, corresponding to the shape of the battery box 5 to be tested, and the size of the bottom plate 1 also corresponds to the size of the battery box 5. The hollow identification position 111 is set corresponding to the correctly placed battery QR code 51, and the area of ​​the opening below it is larger than the area of ​​the battery QR code 51, and the battery QR code 51 can be fully revealed. The pole slot 12 is set corresponding to the position of a row of battery poles 52. The poles 52 of a row of batteries are all accommodated in one pole slot 12, and the poles 52 cannot be seen on the front of the bottom plate 1.

[0040] When conducting a battery polarity test, the battery case 4 is placed with the battery side facing upwards, the bottom plate 1 is placed on the battery surface, the poles 52 on the battery surface are all accommodated in the pole slots 12, the poles 52 are not visible on the front of the bottom plate 1, and the hollow identification position 111 reveals the battery QR code 51, that is, the hollow identification position 111 of the battery QR code 51 appears to determine that the positive and negative poles are correct; if the hollow identification position 111 of the battery QR code 51 does not appear, the positive and negative poles of the corresponding single battery 5 are reversed, and adjustments can be made in time to prevent batteries with reversed positive and negative poles from flowing into the next process or into the market, causing subsequent safety hazards and losses.

[0041] See also Figures 3 to 7 As shown, Figure 7This is a cross-sectional view of a square battery polarity detection jig. In this embodiment, the hollow identification position 111 includes multiple identification holes 1111 and two identification slots 1112, wherein the two identification slots 1112 are respectively arranged on the other two opposite sides of the identification area 11. That is, the identification area 11 has four sides and the four sides are opposite to each other. The pole slots 12 are located on two opposite sides, and the identification slots 1112 should be located on the other two opposite sides. The identification slots 1112 are located on the edge of the bottom plate 1 and have one side open. The identification holes 1111 and the identification slots 1112 are arranged in a staggered manner on the identification area 11.

[0042] In another embodiment, the hollow identification position 111 includes a plurality of identification holes 1111 , wherein two identification holes 1111 are located at two other opposite sides of the identification area 11 , and the identification holes 1111 are arranged in a staggered manner on the identification area 11 .

[0043] Specifically, see Figure 8 and Figure 9 As shown, Figure 8 This is an enlarged view of the cross-section A of the square battery polarity detection fixture. Figure 9 This is an enlarged view of section B of a square battery polarity detection jig. In one embodiment, the identification hole 1111 is formed by four first inner walls 11111. The first inner walls 11111 form a first angle ∠1 with the back of the base plate 1 that is greater than 90 degrees but less than 180 degrees. The upper opening area of ​​the identification hole 1111 is larger than the lower opening area on the back of the base plate 1. The lower opening area of ​​the identification hole 1111 is larger than the area of ​​the battery's QR code. The identification slot 1112 is formed by three second inner walls 11121 and is open at one end. The second inner walls 11121 form a second angle ∠2 with the back of the base plate 1 that is greater than 90 degrees but less than 180 degrees.

[0044] In another embodiment, see Figure 8 and Figure 10 As shown, Figure 10 This is a second enlarged view of section B of the rectangular battery polarity test fixture. The first inner wall 11111 includes a first slanted wall 11112 and a first straight wall 11113. The first straight wall 11113 is perpendicular to the back of the base plate 1. The bottom of the first slanted wall 11112 connects to the top of the first straight wall 11113, forming a third angle ∠3 greater than 180 degrees but less than 270 degrees. Furthermore, the first slanted wall forms a first angle ∠1 greater than 90 degrees but less than 180 degrees with the back of the base plate. The second inner wall 11121 includes a second slanted wall 11122 and a second straight wall 11123. The second straight wall 11123 is perpendicular to the back of the base plate 1. The bottom of the second slanted wall 11122 connects to the top of the second straight wall 11123, forming a fourth angle ∠4 greater than 180 degrees but less than 270 degrees. Furthermore, the second slanted wall 11122 forms a second angle ∠2 greater than 90 degrees but less than 180 degrees with the back of the base plate 1.

[0045] In another embodiment, please refer to Figures 9 to 11 As shown, Figure 11 This is a third enlarged view of section B of the prismatic battery polarity test fixture. The second inner wall 111211 includes a second sloping wall 11122, a second straight wall 11123, and a third sloping wall 11124. The second straight wall 11123 is perpendicular to the back surface of the base plate 1. The second sloping wall 11122 forms a second angle ∠2 with the back surface of the base plate 1, which is greater than 90 degrees but less than 180 degrees. The bottom of the second sloping wall 11122 connects with the top of the second straight wall 11123, forming a fourth angle ∠4 greater than 180 degrees but less than 270 degrees. The top of the third sloping wall 11124 connects with the bottom of the second straight wall 11123, forming a fifth angle ∠5 greater than 180 degrees but less than 270 degrees.

[0046] The hollow identification position 111 is mainly used to locate the position of the battery QR code 51, and the lower opening area on the back of the base plate 1 is larger than the size of the battery QR code 51, which can fully reveal the battery QR code 51 and has a certain fault tolerance space to prevent the base plate 1 from shifting when placed on the battery surface, causing the battery QR code 51 to be partially exposed at the hollow identification position 111, thereby resulting in incomplete shooting and identification of the battery QR code 51 and causing misjudgment.

[0047] The first inner wall 11111 in the identification hole 1111 forms a first angle ∠1 greater than 90 degrees but less than 180 degrees with the back of the base plate 1, or the bottom of the first inclined wall 11112 is connected to the top of the first straight wall 11113 and forms a third angle ∠3 greater than 180 but less than 270 degrees. Both are to avoid shading of the lower opening of the identification hole 111 and to prevent shadows on the edge of the lower opening of the identification hole 1111, which will cause shadows on the battery QR code 51, and ultimately affect the misjudgment when shooting and identifying the battery QR code 51.

[0048] The function of the identification groove 1112 is consistent with that of the identification hole 1111. The second inner wall 111211 forms an angle greater than 90 degrees but less than 180 degrees with the back of the base plate 1, or the bottom of the second inclined wall 11122 is connected to the top of the second straight wall 11123 and forms a fourth angle ∠4 greater than 180 but less than 270 degrees. This is to avoid shading of the lower opening of the identification groove 1112, to prevent shadows on the edge of the lower opening, and to prevent shadows on the battery QR code 51, which ultimately affects the shooting effect and causes misjudgment.

[0049] Review Figure 1 and Figure 3As shown, specifically, it also includes a handle 2. The handle 2 can be provided in one, two or more numbers, and can be made of insulating materials such as rubber. In this embodiment, the handle 2 is located on both sides of the front of the base plate 1 to facilitate the removal of the movable base plate 1. In this embodiment, when performing a battery polarity test, the base plate 1 is moved by grasping the handle 2 and placed on the battery surface of the battery box 4. The position of the hollow identification position 111 is revealed to determine whether the positive and negative poles of the battery are reversed. After the test is completed, the handle 2 is grasped and removed from the base plate 1, and the battery box 4 flows into the next procedure.

[0050] Furthermore, the handle 2 is fixed to the base plate 1 by bolts, which is simple to install and easy to disassemble. In addition, other fixing methods such as screws and buckles can also be used.

[0051] Furthermore, it also includes a directional mark 3, which can be an identifying pattern such as an arrow direction fixed at any position on the base plate 1, or an identifying pattern such as an arrow direction engraved on the base plate 1, which is used to indicate the correct placement direction of the base plate 1 when it is placed on the battery surface of the battery box, which is convenient for identification and simple to operate.

[0052] In actual use, when performing battery polarity testing, the handle 2 is grasped and the base plate 1 is moved to the battery surface of the battery case 4. The poles 52 on the battery surface are accommodated in the corresponding pole slots 12, that is, the poles 12 are covered. The battery's positive and negative poles are determined by whether the hollow identification position 111 in the identification area 11 reveals the battery QR code 51. To circumvent automatic detection, when the camera device captures and identifies the battery QR code 51, it may capture an image of the poles 52 that is extremely similar to the battery QR code 51, resulting in a misjudgment. After the test is completed, the handle 2 is lifted to remove the base plate 1 from the battery case 5, allowing the tested battery case to flow into the next process. This operation is simple and convenient, simplifying manual visual identification. During automatic mechanical testing, only the area exposed by the identification area 2 is captured to determine whether the positive and negative poles are reversed, and the poles 52 are not captured, which could cause misjudgments. This greatly improves detection accuracy and prevents safety hazards caused by batteries with reversed positive and negative poles.

[0053] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A square battery polarity detection fixture, characterized in that: include: A base plate (1), wherein at least one identification area (11) and a plurality of pole slots (12) are provided on the base plate (1), a plurality of hollow identification positions (111) are provided on the identification area (11), and the pole slots (12) are arranged on the back side of the base plate (1); when there is one identification area (11), there are two pole slots (12), and the two pole slots (12) are respectively provided on two opposite sides of the identification area (11); when there are more than two identification areas (11), the number of the pole slots (12) is twice the number of the identification areas (11), and each of the two opposite sides of the identification area (11) is provided with one pole slot (12), the identification areas (11) are arranged side by side in sequence, and the plurality of pole slots (12) are arranged in sequence along the arrangement direction of the identification area (11).

2. The square battery polarity detection jig according to claim 1, characterized in that: The hollow identification position (111) comprises a plurality of identification holes (1111), wherein two of the identification holes (1111) are respectively arranged on the other two opposite sides of the identification area (11), and the identification holes (1111) are staggered on the identification area (11).

3. The square battery polarity detection jig according to claim 1, characterized in that: The hollow identification position (111) comprises a plurality of identification holes (1111) and two identification grooves (1112), the two identification grooves (1112) being respectively arranged on the other two opposite sides of the identification area (11), and the identification grooves (1112) and the identification holes (1111) being staggered on the identification area (11).

4. The square battery polarity detection jig according to claim 3, characterized in that: The identification hole (1111) is surrounded by four first inner walls (11111), and the first inner walls (11111) form a first angle ∠1 with the back of the bottom plate (1), and the first angle ∠1 is greater than 90 degrees and less than 180 degrees; the identification groove (1112) is surrounded by three second inner walls (11121) and is open at one end, and the second inner walls (11121) form a second angle ∠2 with the back of the bottom plate (1), and the second angle ∠2 is greater than 90 degrees and less than 180 degrees.

5. The square battery polarity detection jig according to claim 4, characterized in that: The first inner wall (11111) comprises a first inclined wall (11112) and a first straight wall (11113), the first straight wall (11113) being perpendicular to the back of the bottom plate (1), the first inclined wall (11112) and the back of the bottom plate (1) forming a first angle ∠1, and the first inclined wall (11112) and the first straight wall (11113) being connected to form a third angle ∠3, the third angle ∠3 being greater than 180 but less than 270 degrees.

6. The square battery polarity detection jig according to claim 4, characterized in that: The second inner wall (11121) comprises a second inclined wall (11212) and a second straight wall (11213), the second straight wall (11213) being perpendicular to the back of the bottom plate (1), the second inclined wall (11212) and the back of the bottom plate (1) forming a second angle ∠2, and the second inclined wall (11212) and the second straight wall (11213) being connected to form a fourth angle ∠4, the fourth angle ∠4 being greater than 180 but less than 270 degrees.

7. The square battery polarity detection jig according to claim 6, characterized in that: The second inner wall (11121) further includes a third inclined wall (11214), wherein the third inclined wall (11214) is connected to the lower end of the second straight wall (11213) and forms a fifth angle ∠5, wherein the fifth angle ∠5 is greater than 180 but less than 270 degrees.

8. The square battery polarity detection jig according to any one of claims 1 to 7, characterized in that: It also includes handles (2), which are arranged on both sides of the front side of the base plate (1).

9. The square battery polarity detection jig according to any one of claims 1 to 8, characterized in that: It also includes a pointing mark (3), which is arranged on the front side of the base plate (1).

10. The square battery polarity detection jig according to any one of claims 1 to 8, characterized in that: The bottom plate (1) is made of insulating material.

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