Battery dynamic load test connecting device

Abstract

The utility model discloses a battery dynamic load test connecting device which comprises a tool plate, the bottom surface of the tool plate is provided with an accommodating groove, the accommodating groove is used for accommodating a battery pole, and the top surface of the tool plate is connected with a connecting piece; the torsion part is movably connected with the connecting part; wherein the tooling plate and the battery pole in the accommodating groove are stably integrated through laser welding. The containing groove is formed in the bottom face of the tool plate, the containing groove is used for containing the battery pole, the battery core pole is clamped in the containing groove, and when a laser machine is used for welding, the two sides of the tool plate and the battery core pole are welded to form a stable whole through the arrangement of the containing groove and the battery core pole clamping opening. Position deviation between the tool plate and the pole in the welding process can be avoided, consistency after welding is guaranteed, and dynamic load testing of the battery cell can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery dynamic load test devices, in particular to a battery dynamic load test connection device. Background Art

[0002] With the continuous and rapid development of electric vehicles driven by lithium-ion batteries, the evaluation of lithium-ion battery performance is becoming more and more comprehensive. Among them, the dynamic load test of electric batteries is an indispensable test in many performance evaluations. The dynamic load test mainly simulates multiple load environments through external machinery to test the battery after the pole is installed in terms of torsion resistance, vibration resistance, and multi-state battery application performance.

[0003] Before conducting this test, for different types of lithium-ion battery products, a device is required that is tightly integrated with the battery pole to achieve dynamic load testing of the battery cell.

[0004] In the existing dynamic load test on the battery pole, the workpiece and the pole are usually mechanically connected by rivets. However, when these methods are tested, the two connections are unstable and easily shaken and broken. Utility Model Content

[0005] The utility model aims to provide a battery dynamic load test connection device, which can maintain a stable connection between a battery pole and the device during a battery dynamic load test, and the pole cannot be broken.

[0006] The purpose of the utility model can be achieved through the following technical solutions: A battery dynamic load test connection device, comprising:

[0007] A tooling plate, wherein a receiving groove is provided on the bottom surface of the tooling plate, the receiving groove is used to receive the battery pole, and a connecting piece is connected to the top surface of the tooling plate;

[0008] A torque member, the torque member being movably connected to the connecting member;

[0009] The tooling plate and the battery pole in the receiving slot are formed into a stable whole through laser welding.

[0010] Optionally: the tooling plate is connected to a fin plate, and the fin plate is provided with a polar hole.

[0011] Optionally, the tooling plate is made of aluminum.

[0012] Optionally, the tooling plate and the connecting piece are integrally formed.

[0013] Optionally, the connecting piece is cylindrical, an outer side of the connecting piece is provided with an external thread, the base of the torque piece is provided with an internal thread cavity corresponding to the connecting piece, and the torque piece is threadedly connected to the connecting piece.

[0014] Optionally, after the torque piece is threadedly connected to the connecting piece, the torque piece and the connecting piece are provided with a common through hole, and a pin is inserted into the through hole.

[0015] Optionally, the connecting piece is in a square column shape, the base of the torsion piece is provided with a groove hole corresponding to the connecting piece, and when the torsion piece is connected to the connecting piece, the connecting piece is inserted into the groove hole;

[0016] The base of the torque member is provided with screw holes around it, and the connecting member is provided with screw holes corresponding to the base around it. When the connecting member is inserted into the groove hole, it is fixed by screws so that the two are connected as one.

[0017] Beneficial effects of the utility model:

[0018] 1. The utility model provides a receiving groove on the bottom surface of the tooling plate to receive the battery pole. The receiving groove clamps the battery pole inside. When a laser machine is used for welding, the setting of the receiving groove and the battery pole clamping mouth enables the two sides of the tooling plate to be welded to the battery pole to form a stable whole, which can avoid the position deviation between the tooling plate and the pole during the welding process, thereby ensuring the consistency after welding, which is conducive to the realization of dynamic load test of the battery cell.

[0019] 2. The utility model flexibly connects the torque member and the connecting member. When the size of the tested battery cell changes, it is only necessary to adjust the size of the tooling plate to maintain a relatively uniform specification of the torque member, thereby increasing the extended application range of the entire device and facilitating the dynamic load test of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a battery dynamic load test connection device connected to a battery according to the utility model;

[0021] Figure 2 This is a schematic diagram of the exploded structure of a battery dynamic load test connection device and a battery connection according to the utility model;

[0022] Figure 3 This is a structural schematic diagram of a battery dynamic load test connection device of the utility model;

[0023] Figure 4 This is a schematic diagram of an exploded structure of a battery dynamic load test connection device of the utility model;

[0024] Figure 5This is another structural schematic diagram of a battery dynamic load test connection device of the utility model;

[0025] Figure 6 This is another exploded structural schematic diagram of a battery dynamic load test connection device of the utility model.

[0026] 110, tooling plate; 111, receiving groove; 112, fin plate; 112a, pole hole; 120, connecting piece; 130, torsion piece; 131, base; 132, torsion column;

[0027] 200, battery; 210, pole; 220, welding block;

[0028] 310, external thread; 320, internal thread cavity; 330, through hole; 340, pin;

[0029] 410, groove hole; 420, screw hole; 430, screw. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] like Figure 1-6 As shown, the utility model discloses a battery dynamic load test connection device, including: a tooling plate 110, such as Figure 1 , 2 As shown, the bottom surface of the tooling plate 110 is provided with a receiving groove 111, and the receiving groove 111 is used to receive the pole 210 of the battery 200. When performing a dynamic load test on the battery 200, the pole 210 and the tooling plate 110 need to be laser welded to closely connect the two into one. By setting the receiving groove 111, the size of the receiving groove 111 is slightly larger than the pole 210, and the receiving groove 111 clamps the pole 210 of the battery 200 inside. When welding is performed using a laser machine, the receiving groove 111 and the bayonet of the pole 210 of the battery 200 are set so that the two sides of the tooling plate 110 are welded with the pole 210 to form an integrated welding block 220, so that the tooling plate and the pole are stably connected as one. By setting the receiving groove 111, the position offset between the tooling plate 110 and the pole 210 during the welding process can be avoided, thereby ensuring the consistency after welding.

[0032] The tooling plate 110 is made of aluminum, and the pole 210 is also made of aluminum. The tooling plate 110 and the pole 210 are welded by a laser machine, so that the two materials can be melted together, with a large contact area, a large melting depth and a large melting width, and the connection between the tooling plate 110 and the pole 210 is stable and not easy to break.

[0033] Furthermore, the tooling plate 110 is connected to a fin plate 112 , and the fin plate 112 is provided with a pole hole 112 a , and the battery 200 can be charged and discharged through the pole hole 112 a , so that the power state of the battery 200 better meets the test condition requirements.

[0034] Preferably, the tooling plate 110 and the connecting piece 120 are made of the same material, and the two can be integrally formed by mold casting. The integral forming can maintain a high strength between the two, which is more conducive to the dynamic load test of the battery 200. The connecting piece 120 and the torque piece 130 are movably connected. When the size of the battery 200 being tested changes, only the size of the tooling plate 110 needs to be adjusted, and the torque piece 130 can be kept in a relatively uniform specification, which can improve the extended application range of the entire device.

[0035] Embodiment 1: The torque member 130 can be connected to the connecting member 120 by threading, such as Figure 3 , 4 As shown, the connecting member 120 is cylindrical, and an external thread 310 is provided on the outer side of the connecting member 120. The base 131 of the torque member 130 is provided with an internal thread cavity 320 corresponding to the connecting member 120. The external thread 310 is screwed onto the internal thread cavity 320 to achieve threaded connection of the torque member 130 to the connecting member 120. This connection method can maintain a stable connection between the torque member 130 and the connecting member 120, facilitate disassembly, simplify the operation steps, and facilitate the implementation of dynamic load testing of the battery 200.

[0036] Preferably, Figure 4 As shown, when the torque member 130 is threadedly connected to the connecting member 120, a common through hole 330 is opened in the torque member 130 and the connecting member 120. By fixing the pin 340 in the through hole 330, the connection between the torque member 130 and the connecting member 120 is further fixed, which is more conducive to the implementation of the dynamic load test of the battery 200.

[0037] Embodiment 2: The torque member 130 can be inserted into the connector 120 and then fixed by screws 430 to keep the torque member 130 and the connector 120 stably connected. Specifically, Figure 5 , 6As shown, the connecting member 120 is in the shape of a square column, and the base 131 of the torque member 130 is provided with a groove hole 410 corresponding to the connecting member 120. When the torque member 130 is connected to the connecting member 120, the connecting member 120 is inserted into the groove hole 410; at this time, the base 131 of the torque member 130 is provided with screw holes 420 around it, and the connecting member 120 is provided with screw holes 420 corresponding to the base 131 around it. When the connecting member 120 is inserted into the groove hole 410, it is fixed by screws 430 so that the two are connected as one. This connection method can maintain the stable connection between the torque member 130 and the connecting member 120, and is also convenient for disassembly, which is conducive to the implementation of the dynamic load test of the battery 200.

[0038] Principle of the utility model: The tooling plate 110 of the utility model is provided with a receiving groove 111, and the receiving groove 111 is used to place the pole 210. The tooling plate 110 is connected to the pole 210 by laser welding to be firmly integrated. The top surface of the tooling plate 110 is connected to the connecting piece 120, and the connecting piece 120 is movably connected to the base 131 of the torque piece 130, so that the torque piece 130 can be replaced conveniently. The torsion column 132 of the torque piece 130 can be connected to the test device to perform dynamic load test on the battery 200. The structure of the whole device is simple and practical.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0040] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A battery dynamic load test connection device, characterized in that: include: A tooling plate (110), wherein a bottom surface of the tooling plate (110) is provided with a receiving groove (111), wherein the receiving groove (111) is used to receive a battery (200) pole (210), and a connecting piece (120) is connected to a top surface of the tooling plate (110); A torsion piece (130), wherein the torsion piece (130) is movably connected to the connection piece (120); The tooling plate (110) and the battery (200) pole (210) in the receiving groove (111) are formed into a stable whole by laser welding.

2. A battery dynamic load test connection device according to claim 1, characterized in that: The tooling plate (110) is connected to a fin plate (112), and the fin plate (112) is provided with a pole hole (112a).

3. A battery dynamic load test connection device according to claim 1, characterized in that: The tooling plate (110) is made of aluminum.

4. A battery dynamic load test connection device according to claim 1, characterized in that: The tooling plate (110) and the connecting piece (120) are integrally formed parts.

5. A battery dynamic load test connection device according to claim 1, characterized in that: The connecting piece (120) is cylindrical, and an external thread (310) is formed on the outside of the connecting piece (120). The base (131) of the torque piece (130) is formed with an internal thread cavity (320) corresponding to the connecting piece (120), and the torque piece (130) is threadedly connected to the connecting piece (120).

6. A battery dynamic load test connection device according to claim 5, characterized in that: After the torque member (130) is threadedly connected to the connecting member (120), the torque member (130) and the connecting member (120) are provided with a common through hole (330), and a pin (340) is inserted into the through hole (330).

7. A battery dynamic load test connection device according to claim 1, characterized in that: The connecting member (120) is in the shape of a square column, and the base (131) of the torsion member (130) is provided with a groove hole (410) corresponding to the connecting member (120); when the torsion member (130) is connected to the connecting member (120), the connecting member (120) is inserted into the groove hole (410); The base (131) of the torque member (130) is provided with screw holes (420) around it, and the connecting member (120) is provided with screw holes (420) corresponding to the base (131) around it. When the connecting member (120) is inserted into the groove hole (410), it is fixed by screws (430) so that the two are connected as one.

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