Battery monomer welding-free tab test connecting device

Abstract

The utility model discloses a battery monomer welding-free tab test connecting device, which comprises a lower shell and an upper shell, the upper shell is detachably arranged on the lower shell, and the lower shell and / or the upper shell are / is used for fixing a battery monomer; an elastic conducting strip is arranged on the upper shell, the elastic conducting strip is opposite to an upper conducting column of the battery monomer, a top tab is arranged on the conducting strip, and the top tab is mounted on the upper shell in a sliding manner; and the position of the upper shell in the vertical direction relative to the lower shell can be adjusted, so that the elastic conducting strips are in contact with the upper conducting columns of the battery monomers, and the elastic conducting strips are in a compressed state. According to the single battery welding-free tab test connecting device provided by the utility model, the elastic conducting strip is connected with the single battery post, so that the need of welding the connecting post connecting strip before the single battery is tested is avoided, the addition of a welding procedure before the test is avoided, the use of the connecting strip is reduced, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery testing equipment technology, and in particular to a battery cell solderless tab testing connection device. Background Technology

[0002] The demand for battery performance testing is increasing, and testing the battery cell, the smallest unit of a battery, is the most basic test. Before testing, tabs need to be soldered onto the battery cell's terminals to connect it to the battery cell testing system cable. Furthermore, battery cells vary in shape and size, including cylindrical and prismatic types, and large and small dimensions. Soldering tabs before testing adds an extra welding process, requiring specialized laser welding equipment and consuming a certain number of tabs. Moreover, the tabs are not recyclable after welding, and the welded battery cells cannot be used for other battery pack applications. Additionally, connecting each battery to the testing system requires a separate connection and disconnection of the tabs, increasing labor costs. Utility Model Content

[0003] To address the aforementioned issues related to welding during battery cell testing, this device utilizes flexible contact connections to the battery cell terminals, achieving a solderless connection for battery cell testing. Furthermore, the terminals of this connection device can be permanently connected to the positive and negative cables of the battery testing system, reducing the need for frequent cable disconnection during battery cell testing and lowering labor costs. Additionally, this testing connection fixture is an open-access design, adaptable to various battery models and sizes, and reusable, further saving testing costs. Therefore, this solderless terminal testing connection device offers efficient and convenient battery cell testing operations while maximizing testing safety and reliability.

[0004] This utility model proposes a battery cell solderless tab testing and connection device, which includes a lower housing and an upper housing. The upper housing is detachably installed on the lower housing, and the lower housing and / or the upper housing is used to fix the battery cell.

[0005] The upper housing is provided with an elastic conductive sheet, which is opposite to the upper conductive post of the battery cell. The elastic conductive sheet is provided with a top tab, which is slidably mounted on the upper housing. The vertical position of the upper housing relative to the lower housing can be adjusted so that the elastic conductive sheet contacts the upper conductive post of the battery cell and the elastic conductive sheet is in a compressed state.

[0006] During the testing process, the battery cell is placed inside the lower housing, and then the upper housing is installed so that the elastic conductive sheet contacts the top tab of the battery cell. The upper housing is then moved downwards and fixed so that the elastic conductive sheet contacts the top tab of the battery cell and conducts electricity. This avoids the existing method of welding tabs to the battery cell, making it easier to operate and enabling the testing of different battery models.

[0007] In some preferred embodiments, the elastic conductive sheet is a downwardly convex arc-shaped structure to ensure the conductive connection between the elastic conductive sheet and the top tab, thereby ensuring the detection effect.

[0008] In order to fix the upper and lower housings, in some embodiments, preferably, a fastener for fixing the upper housing to the lower housing is detachably installed between the upper housing and the lower housing.

[0009] As a further optimization of this utility model, the upper housing has a third side plate and a fourth side plate, the third side plate and the fourth side plate are arranged opposite to each other and the distance between the third side plate and the fourth side plate is adjustable to fix the battery cell.

[0010] This allows for the fixation of the battery cell's side, preventing the battery cell from moving relative to the upper casing during testing and ensuring testing accuracy.

[0011] As a further optimization of this utility model, the lower housing has a first side plate and a second side plate, and the distance between the first side plate and the second side plate is adjustable to fix the battery cell.

[0012] The displacement of the third side plate relative to the fourth side plate is perpendicular to the displacement of the second side plate relative to the first side plate.

[0013] This further enhances the stability of the battery cells, preventing them from moving relative to the upper and lower housings during testing and ensuring testing accuracy.

[0014] Preferably, a support plate is provided at the bottom of the lower housing, and an elastic element capable of vertical deformation is provided between the support plate and the lower housing, with the bottom of the battery cell in contact with the support plate;

[0015] When the battery is tested, the elastic element is in a compressed state to ensure the electrical connection between the elastic conductive sheet and the battery, thereby ensuring the testing accuracy.

[0016] In some specific embodiments, the battery cell is square, and the upper and / or lower housing abuts against and is in surface contact with the side of the battery cell.

[0017] Preferably, the upper conductive post and the elastic conductive sheet are provided in two sets, one set of the upper conductive post is connected to the other set of the elastic conductive sheet, one set of the elastic conductive sheet is connected to the positive electrode of the battery cell, and the other set of the elastic conductive sheet is connected to the negative electrode of the battery cell.

[0018] Since the positive and negative terminals of the square battery cell are located on top of the battery cell, two sets of elastic conductive sheets are used to achieve electrical connection between the square battery cell and the battery cell.

[0019] In some specific embodiments, the battery cell is cylindrical, and the lower housing and / or the structure for fixing the battery cell to the lower housing is arc-shaped;

[0020] It facilitates the testing of cylindrical battery cells.

[0021] Preferably, the bottom of the lower housing has a lower conductive element, and a bottom tab is connected to the lower conductive element. The bottom tab can slide relative to the lower housing in the vertical direction. In some embodiments, preferably, a structure that can undergo elastic deformation in the vertical direction is provided between the lower conductive element and the lower housing to ensure the detection of cylindrical battery cells.

[0022] It should be noted that when testing cylindrical battery cells, the support plate has conductive properties; the support plate is the lower conductive component.

[0023] The battery cell solderless tab testing and connection device proposed in this utility model:

[0024] 1. By connecting the battery cell terminals with the elastic conductive sheet, the battery cells are exempt from the need to weld the connecting plates before testing, thus avoiding additional welding steps before testing and reducing the use of connecting plates, thereby reducing costs.

[0025] 2. This device is an open-access combination that can handle battery cells of various shapes and sizes, and is reusable, saving testing costs.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the square battery tested according to this utility model;

[0029] Figure 3 This is a schematic diagram of the test structure for a cylindrical battery cell according to this utility model;

[0030] Figure 4 This utility model Figure 3 Schematic diagram of the lower shell structure;

[0031] In the figure: 1. Lower shell; 10. First side plate; 11. Second side plate; 2. Upper shell; 20. Third side plate; 21. Fourth side plate; 3. Elastic conductive sheet; 4. Top tab; 5. Fixing component; 6. Support plate; 7. Elastic component; 8. Lower conductive component; 9. Bottom tab. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] like Figure 1-4 The device shown is a battery cell solderless tab testing and connection device, comprising a lower housing 1 and an upper housing 2. The upper housing 2 is detachably mounted on the lower housing 1. The lower housing 1 and / or the upper housing 2 are used to fix the battery cell. It should be noted that, in some embodiments, the lower housing 1 is used to fix the side of the battery cell, and in some embodiments, the lower housing 1 and the upper housing 2 can also be used to fix the battery cell.

[0034] Specifically, the lower housing 1 is used to fix the battery cell. The lower housing 1 includes a base plate and a first side plate 10 and a second side plate 11 mounted on the base plate. The first side plate 10 and the second side plate 11 are arranged opposite to each other and parallel to each other. The distance between the first side plate 10 and the second side plate 11 is adjustable to achieve clamping and fixing of the side of the battery cell.

[0035] Specifically, when fixing the battery cell through the upper housing 2, the upper housing 2 includes a top plate and a third side plate 20 and a fourth side plate 21 disposed on the top plate, so that the upper housing 2 has a U-shaped structure. The third side plate 20 and the fourth side plate 21 are opposite to each other and parallel, and the distance between the third side plate 20 and the fourth side plate 21 can be adjusted to fix the battery. Specifically, the third side plate 20 and the fourth side plate 21 can be slidably installed on the upper housing 2 and the battery cell can be fixed by screws or fixing pins and other structures.

[0036] In some embodiments, the battery cell is preferably fixed by both the lower housing 1 and the upper housing 2. Preferably, the displacement of the second side plate 11 relative to the first side plate 10 is perpendicular to the displacement of the third side plate 20 relative to the fourth side plate 21.

[0037] The upper housing 2 is provided with an elastic conductive sheet 3. It should be noted that the elastic conductive sheet 3 can be an elastic sheet made of a conductive metal material or a superconducting non-metal material in the prior art. In some embodiments, the elastic conductive sheet 3 is a downwardly protruding sheet structure, that is, the elastic conductive sheet 3 is a dot-type contact form. Of course, it can also be a surface contact or other L-shaped or T-shaped contact structure.

[0038] The elastic conductive sheet 3 is opposite to the upper conductive post of the battery cell, and the elastic conductive sheet is provided with a top tab 4. The top tab 4 is slidably mounted on the upper housing 2. The vertical position of the upper housing 2 relative to the lower housing 1 can be adjusted so that the elastic conductive sheet 3 contacts the upper conductive post of the battery cell and the elastic conductive sheet 3 is in a compressed state. The top tab 4 can be made of a conductive metal material or a superconducting non-metal material as in the prior art, and is connected to the cable of the test system by bolts or welding.

[0039] During the testing process, the battery cell is placed inside the lower housing 1, and the battery is fixed by adjusting the distance between the first side plate 10 and the second side plate 11 and / or adjusting the distance between the third side plate 20 and the fourth side plate 21. Then, the upper housing 2 is installed and the elastic conductive sheet 3 is brought into contact with the top tab 4 of the battery cell. The upper housing 2 is moved downward and fixed so that the elastic conductive sheet 3 is brought into contact with the top tab 4 of the battery cell and conducts electricity. This avoids the existing method of welding tabs to the battery cell, which is convenient to operate and can enable the testing of different battery models.

[0040] In order to fix the upper housing 2 and the lower housing 1, in some embodiments, a fastener 5 for fixing the upper housing 2 to the lower housing 1 is detachably installed between the upper housing 2 and the lower housing 1. The fastener 5 can be a bolt or a fixing pin in the prior art.

[0041] This further ensures the stability of the battery cells, preventing them from moving relative to the upper housing 2 and lower housing 1 during testing, thus guaranteeing testing accuracy.

[0042] Preferably, a support plate 6 is provided at the bottom of the lower housing 1, and an elastic element 7 that can be elastically deformed in the vertical direction is provided between the support plate 6 and the lower housing 1, and the bottom of the battery cell is in contact with the support plate 6.

[0043] When the battery is tested, the elastic element 7 is in a compressed state to ensure the electrical connection between the elastic conductive sheet 3 and the battery, thereby ensuring the testing accuracy. The elastic element 7 can be a spring as in the prior art.

[0044] like Figure 2As shown, the battery cell is square, and the upper shell 2 and / or lower shell 1 abut against the side of the battery cell and are in surface contact. That is, the first side plate 10 and the second side plate 11 are plate-shaped structures, the third side plate 20 and the fourth side plate 21 are also plate-shaped structures, and the first side plate 10, the second side plate 11, the third side plate 20 and the fourth side plate 21 are in surface contact with the battery cell.

[0045] Specifically, there are two sets of upper conductive pillars and elastic conductive sheets 3. One set of upper conductive pillars is connected to one set of elastic conductive sheets 3. One set of elastic conductive sheets 3 is connected to the positive electrode of the battery cell, and the other set of elastic conductive sheets 3 is connected to the negative electrode of the battery cell.

[0046] Since the positive and negative terminals of the square battery cell are located on top of the battery cell, two sets of elastic conductive sheets 3 are used to achieve electrical connection between the square battery cell and the battery cell.

[0047] like Figure 3-4 As shown, the battery cell is cylindrical, and the structure for fixing the battery cell to the lower housing 1 is an arc surface. The first side plate 10 and the second side plate 11 are arc plate structures, and the third side plate 20 and the fourth side plate 21 are also arc plate structures. The first side plate 10, the second side plate 11, the third side plate 20 and the fourth side plate 21 are in line contact with the battery cell, which facilitates the detection of the cylindrical battery cell.

[0048] Preferably, the bottom of the lower housing 1 has a lower conductive element 8, and a bottom tab 9 is connected to the lower conductive element 8. The bottom tab 9 can slide vertically relative to the lower housing 1, and the bottom tab 9 has a portion extending out of the lower housing 1. In some embodiments, preferably, a structure that can elastically deform in the vertical direction is provided between the lower conductive element 8 and the lower housing 1 to ensure the detection of cylindrical battery cells. When detecting cylindrical battery cells, the support plate 6 has conductive properties, and the support plate 6 is the lower conductive element 8.

[0049] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A battery cell solderless tab testing and connection device, characterized in that, The enclosure includes a lower housing (1) and an upper housing (2), wherein the upper housing (2) is detachably mounted on the lower housing (1), and the lower housing (1) and / or the upper housing (2) are used to fix the battery cells; The upper housing (2) is provided with an elastic conductive sheet (3), which is opposite to the upper conductive post of the battery cell. The elastic conductive sheet (3) is provided with a top tab (4), which is slidably mounted on the upper housing (2). The vertical position of the upper housing (2) relative to the lower housing (1) can be adjusted so that the elastic conductive sheet (3) contacts the upper conductive post of the battery cell and the elastic conductive sheet (3) is in a compressed state.

2. The battery cell solderless tab testing and connection device according to claim 1, characterized in that, The elastic conductive sheet (3) has a downwardly convex arc-shaped structure.

3. The battery cell solderless tab testing and connection device according to claim 1, characterized in that, A fastener (5) for fixing the upper housing (2) to the lower housing (1) is detachably installed between the upper housing (2) and the lower housing (1).

4. The battery cell solderless tab testing and connection device according to claim 1, characterized in that, The upper housing (2) has a third side plate (20) and a fourth side plate (21), the third side plate and the fourth side plate (21) are arranged opposite to each other and the distance between the third side plate (20) and the fourth side plate (21) is adjustable to fix the battery cell.

5. The battery cell solderless tab testing and connection device according to claim 4, characterized in that, The lower housing (1) has a first side plate (10) and a second side plate (11), and the distance between the first side plate (10) and the second side plate (11) is adjustable to fix the battery cell. The displacement of the third side plate (20) relative to the fourth side plate (21) is perpendicular to the displacement of the second side plate (11) relative to the first side plate (10).

6. The battery cell solderless tab testing and connection device according to claim 1, characterized in that, The bottom of the lower housing (1) is provided with a support plate (6), and an elastic element (7) that can be elastically deformed in the vertical direction is provided between the support plate (6) and the lower housing (1). The bottom of the battery cell is in contact with the support plate (6).

7. The battery cell solderless tab testing and connection device according to any one of claims 1-6, characterized in that, The battery cells are square.

8. The battery cell solderless tab testing and connection device according to claim 7, characterized in that, The upper conductive post and the elastic conductive sheet (3) are provided in two sets. One set of the upper conductive post is connected to one set of the elastic conductive sheet (3). One set of the elastic conductive sheet (3) is connected to the positive electrode of the battery cell, and the other set of the elastic conductive sheet (3) is connected to the negative electrode of the battery cell.

9. The battery cell solderless tab testing and connection device according to any one of claims 1-6, characterized in that, The battery cells are cylindrical.

10. The battery cell solderless tab testing and connection device according to claim 9, characterized in that, The bottom of the lower housing (1) has a lower conductive element (8), and a bottom electrode (9) is connected to the lower conductive element (8). The bottom electrode (9) can slide relative to the lower housing (1) in the vertical direction.

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