Safe battery copper bar
By adding stabilizing components, including springs and limiting rings, to the battery copper busbar, the problem of loose connections caused by mechanical vibration and temperature changes was solved, thus achieving the stability of the copper busbar and the stability of power transmission, and reducing safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGLING ZHONGYUE TECHNOLOGY CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-05
AI Technical Summary
The copper busbar connections in a battery system are prone to loosening due to mechanical vibration and temperature changes, leading to safety hazards such as poor contact, overheating, and short circuits.
A safe battery copper busbar was designed with added stabilizing components, including a clamping element and a damping element. The connection stability is enhanced by the combination of springs and limiting rings, and damping is set at the connection to improve the clamping force and resist changes in physical stress.
It significantly reduces the risk of loosening of connection parts due to long-term operation, ensures more efficient and stable power transmission, and prevents the occurrence of safety hazards.
Smart Images

Figure CN224204298U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery copper busbar technology, specifically relating to a safe battery copper busbar. Background Technology
[0002] Battery copper busbars are conductive materials used to connect battery components. They are usually made of high-purity copper and have good conductivity and heat dissipation properties. They can ensure stable and efficient current transmission in the battery system, while also helping the battery dissipate heat during operation, preventing overheating, and ensuring the safety and performance of the battery.
[0003] In current battery systems, copper busbars, after prolonged operation, may encounter a series of physical factors at their connection points, potentially leading to problems. Specifically, continuous mechanical vibration is a significant factor, gradually weakening the tightness of the copper busbar connections. Furthermore, frequent changes in ambient temperature can cause thermal expansion and contraction at the connections, and these repeated physical stress changes may gradually loosen previously secure connections. Once connections become loose, it not only affects the energy transfer efficiency of the battery system but may also lead to safety hazards such as poor contact, overheating, or even short circuits. Utility Model Content
[0004] The purpose of this invention is to provide a safe battery copper busbar to solve the problem mentioned in the background art that battery copper busbars are prone to safety hazards due to loose connections.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety battery copper busbar, comprising a copper busbar body, with circular holes at both ends for external connectors to pass through, the copper busbar body being fixed to a mounting component via the connectors passing through the circular holes; end grooves with connecting circular holes are symmetrically formed on both end faces of the copper busbar body; a stabilizing component is provided at the end position of the copper busbar body, the stabilizing component comprising: a retaining member, disposed inside the end groove; the two ends of the retaining member respectively abut against the upper and lower end faces inside the end groove, and through the springback of the two ends of the retaining member, the end of the copper busbar body can be tilted towards... The copper busbar body springs outward, and when the external connector passes through the circular hole, the slightly deformed copper busbar body will press against the connector and the mounting piece respectively, thereby eliminating the gap between the copper busbar body and the connector and mounting piece, achieving the purpose of stable installation; the damping piece is set on the top surface of the copper busbar body, and the damping piece abuts against the end face of the connector, thereby increasing the damping at the connection and further reducing the possibility of loosening; the centers of the pressing piece, the damping piece, and the circular hole are on the same vertical line, and the inner diameter of the pressing piece and the damping piece is larger than the inner diameter of the circular hole, ensuring that the connector can pass through normally without being affected.
[0006] Preferably, the clamping member includes a spring disposed inside the end groove, and limiting rings are sleeved at both ends of the spring. The limiting rings are connected to the upper and lower inner walls of the end groove, thereby limiting the spring and preventing it from coming loose from the inside of the end groove.
[0007] Preferably, the sum of the thicknesses of the two limiting rings is less than the inner height of the end groove, and the center of the limiting ring and the center of the spring are on the same vertical line.
[0008] Preferably, the top surface of the copper busbar body is provided with an annular groove concentric with the circular hole, and the damping element includes an annular plate placed in the annular groove. The surface of the annular plate is fixed with a retaining block at equal angles. The retaining block abuts against the end of the external connector, thereby increasing the retaining force during connection.
[0009] Preferably, the longitudinal section of the end of the clamping block is triangular, and the clamping block protrudes to the top surface of the copper busbar body.
[0010] Preferably, the copper busbar body is further fitted with an insulating sleeve, and the inner wall of the insulating sleeve is provided with an arc-shaped groove. The arc-shaped groove can reduce the connection area between the copper busbar body and the insulating sleeve, thereby achieving auxiliary heat dissipation of the copper busbar body while ensuring insulation.
[0011] Preferably, there is a gap between the two ends of the insulating sleeve and the circular hole of the copper busbar body, and the thickness of the insulating sleeve is less than the thickness of the copper busbar body.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] In this invention, a stabilizing component is added to secure the copper busbar body to the connecting structure through additional mechanical support, forming a stable and tight fit. This design not only enhances the stability of the copper busbar installation but also resists, to a certain extent, changes in physical stress from the external environment, such as the thermal expansion and contraction caused by vibration and temperature changes. By adding the stabilizing component, the risk of loosening of the connection due to long-term operation can be significantly reduced, thereby ensuring more efficient and stable power transmission in the battery system. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a side view of the present invention;
[0016] Figure 3 This is a schematic diagram showing the connection between the spring and the limiting ring of this utility model.
[0017] In the picture:
[0018] 100. Copper busbar body; 101. End groove; 102. Annular groove; 103. Annular plate; 104. Anchor block;
[0019] 200. Insulating sleeve; 201. Arc-shaped groove;
[0020] 300, Spring; 301, Limiting ring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figures 1 to 3 This utility model provides a technical solution: a safe battery copper busbar, comprising...
[0023] The copper busbar body 100 has round holes at both ends for external connectors to pass through, and the copper busbar body 100 is fixed to the mounting component by the connectors passing through the round holes.
[0024] The copper busbar body 100 has end slots 101 with symmetrically opened connecting circular holes at both ends; a stabilizing component is provided at the end of the copper busbar body 100, the stabilizing component including:
[0025] A clamping member is provided inside the end groove 101. The two ends of the clamping member are respectively clamped to the upper and lower end faces inside the end groove 101. Through the spring-back clamping of the two ends of the clamping member, the end of the copper bus body 100 can be springed open towards the outside. When the external connector passes through the round hole, the copper bus body 100, which is slightly deformed to the outside, will clamp the connector and the mounting part respectively, thereby eliminating the gap between the copper bus body 100 and the connector and mounting part, and achieving the purpose of stable installation.
[0026] A damping element is provided on the top surface of the copper busbar body 100. The damping element abuts against the end face of the connector to increase the damping at the connection and further reduce the possibility of loosening.
[0027] The centers of the clamping component, damping component, and circular hole are on the same vertical line, and the inner diameters of the clamping component and damping component are larger than the inner diameter of the circular hole, ensuring that the connecting component can pass through normally without being affected.
[0028] In this embodiment, preferably, the abutting member includes a spring 300 disposed inside the end groove 101, and a limiting ring 301 is sleeved at both ends of the spring 300. The limiting ring 301 is connected to the upper and lower inner walls of the end groove 101, and the limiting ring 301 is used to limit the spring 300 and prevent the spring 300 from coming loose from the inside of the end groove 101.
[0029] In this embodiment, preferably, the sum of the thicknesses of the two limiting rings 301 is less than the inner height of the end groove 101, and the center of the limiting ring 301 and the center of the spring 300 are on the same vertical line.
[0030] In this embodiment, preferably, the top surface of the copper busbar body 100 is provided with an annular groove 102 that is concentric with the circular hole. The damping component includes an annular piece 103 placed in the annular groove 102. The surface of the annular piece 103 is fixed with a retaining block 104 at equal angles. The retaining block 104 abuts against the end of the external connector, thereby increasing the retaining force during connection.
[0031] In this embodiment, preferably, the longitudinal section of the end of the clamping block 104 is triangular, and the clamping block 104 protrudes to the top surface of the copper busbar body 100.
[0032] In this embodiment, preferably, an insulating sleeve 200 is also provided on the outside of the copper busbar body 100. The inner wall of the insulating sleeve 200 is provided with an arc-shaped groove 201. The arc-shaped groove 201 can reduce the connection area between the copper busbar body 100 and the insulating sleeve 200, and achieve auxiliary heat dissipation of the copper busbar body 100 while ensuring insulation.
[0033] In this embodiment, preferably, there is a gap between the two ends of the insulating sleeve 200 and the circular hole of the copper busbar body 100, and the thickness of the insulating sleeve 200 is less than the thickness of the copper busbar body 100.
[0034] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A safety-type battery copper busbar, comprising: The copper busbar body (100) has round holes at both ends for external connectors to pass through; Its features are: The copper busbar body (100) has end slots (101) with communicating circular holes symmetrically opened at both ends; a stabilizing component is provided at the end of the copper busbar body (100), the stabilizing component including: A clamping member is provided inside the end groove (101); the two ends of the clamping member abut against the upper and lower end faces inside the end groove (101), respectively. A damping element is provided on the top surface of the copper busbar body (100), and the damping element abuts against the end face of the connector; The centers of the clamping member, the damping member, and the circular hole are on the same vertical line, and the inner diameters of the clamping member and the damping member are larger than the inner diameter of the circular hole.
2. The safety-type battery copper busbar according to claim 1, characterized in that: The clamping member includes a spring (300) disposed inside the end groove (101), and a limiting ring (301) is sleeved at both ends of the spring (300), the limiting ring (301) being connected to the upper and lower inner walls of the end groove (101).
3. The safety-type battery copper busbar according to claim 2, characterized in that: The sum of the thicknesses of the two limiting rings (301) is less than the inner height of the end groove (101), and the center of the limiting ring (301) and the center of the spring (300) are on the same vertical line.
4. The safety-type battery copper busbar according to claim 1, characterized in that: The top surface of the copper busbar body (100) is provided with an annular groove (102) that is concentric with the circular hole. The damping element includes an annular piece (103) placed in the annular groove (102), and a retaining block (104) is fixed at equal angles on the surface of the annular piece (103).
5. A safety-type battery copper busbar according to claim 4, characterized in that: The longitudinal section of the end of the clamping block (104) is triangular, and the clamping block (104) protrudes to the top surface of the copper busbar body (100).
6. A safety-type battery copper busbar according to claim 1, characterized in that: An insulating sleeve (200) is also fitted on the outside of the copper busbar body (100), and an arc-shaped groove (201) is formed on the inner wall of the insulating sleeve (200).
7. A safety-type battery copper busbar according to claim 6, characterized in that: The insulating sleeve (200) has a gap between its two ends and the circular hole of the copper busbar body (100), and the thickness of the insulating sleeve (200) is less than the thickness of the copper busbar body (100).