Lithium battery connecting copper bar

Abstract

The utility model discloses a lithium battery connecting copper bar, and belongs to the technical field of new energy automobile parts. A lithium battery connecting copper bar comprises a fixing plate, the top of the fixing plate is provided with a first heat dissipation rubber mat and a first heat dissipation sheet, the outer wall of a copper sheet is sleeved with a high-temperature-resistant insulation sleeve, the outer walls of the rear portions of a plurality of connecting plates are connected with a protective cover through pin shafts, the heat dissipation area of a copper plate body can be increased, and the heat dissipation efficiency of the copper plate body can be further improved; secondly, a plurality of heat dissipation ceramic blocks can be matched with a third heat dissipation sheet and a fourth heat dissipation rubber mat on the protective cover to increase the heat dissipation area of the connecting part, so that the wiring part of the connecting terminal is better cooled, and the use stability of the connecting copper bar in the use project is ensured; and the protective cover can be used for sealing and supporting the connecting part of the connecting terminal of the wiring copper bar, so that the pollution of impurities and dust can be avoided, and the influence of vibration on the use of the connecting copper bar can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy automobile parts, and more specifically, to a lithium battery connecting copper busbar. Background Art

[0002] Lithium batteries are batteries that use lithium ions to move back and forth between positive and negative electrodes to release and store electrical energy. Lithium batteries have the advantages of high energy density, light weight, and no memory effect, so they are widely used in mobile electronic devices, electric vehicles, energy storage and other fields.

[0003] Lithium battery connection copper busbar refers to the copper busbar that is usually used to connect battery cells or battery modules during the battery assembly process to achieve series or parallel connection between batteries. As a conductive material, the copper busbar has good conductivity and mechanical strength, and can withstand the pressure of current transmission and connection, ensuring the overall working stability and safety of the battery pack.

[0004] The existing copper busbars for connecting lithium batteries still have the following problems: the existing copper busbars for connecting lithium batteries are mostly composed of copper plates and insulating sleeves, which are convenient for connecting batteries in series or in parallel. The heat dissipation capacity of the copper busbars is poor and they lack certain heat dissipation parts. When the battery pack is actually working, the current will be transmitted through the copper busbars, which will generate a certain resistance, thereby causing the copper busbars and the connection parts to generate heat. If the temperature is too high, the conductivity of the copper busbars will decrease, thereby affecting the efficiency and stability of current transmission, and may even cause safety problems, such as short circuits and leakage.

[0005] In addition, the existing lithium battery copper busbar connection not only has unsatisfactory heat dissipation efficiency, but also has incomplete protection. It is easily affected by the external environment, introducing some impurities or dust and other pollutants, which in turn affects the reliability and safety of the connection. It also lacks certain fixed supports, which causes the wires or fixing screws at the connection to be easily affected by vibration, which in turn causes the fixing screws or wires to loosen and break easily, causing many troubles in use.

[0006] In view of this, we propose a lithium battery connecting copper busbar. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] The utility model aims to provide a lithium battery connecting copper busbar to solve the problems of poor heat dissipation and poor protection of the connecting copper busbar connection proposed in the above background technology.

[0009] 2. Technical solution

[0010] A lithium battery connecting copper busbar comprises a fixing plate, a heat dissipation pad and a heat sink are arranged on the top of the fixing plate, a plurality of the heat sinks are connected to a protective box after passing through the heat dissipation pad, a copper plate is arranged inside the protective box, connecting terminals are arranged at both ends of the copper plate, a high temperature resistant insulating sleeve is sleeved on the outer wall of the copper plate, connecting plates are arranged on both sides of the fixing plate, and protective covers are connected to the outer walls of the plurality of connecting plates by pins.

[0011] Preferably, a second heat dissipation pad is provided at the bottom of the inner cavity of the protection box, a second heat sink is provided at the top of the inner cavity of the protection box, and a heat dissipation hole is opened on the outer wall of the top of the protection box.

[0012] Preferably, a heat dissipation pad three is provided at the bottom of the plurality of heat dissipation fins two, and the high temperature resistant insulating sleeve is clamped and adhered between the heat dissipation pad two and the heat dissipation pad three.

[0013] Preferably, a buffer pad is arranged on the top of the plurality of connection plates, a heat dissipation ceramic block is arranged on the top of the buffer pad, and an arc groove is formed on the bottom of the heat dissipation ceramic block.

[0014] Preferably, the buffer pad is made of rubber, the outer wall of the heat dissipation ceramic block is honeycomb-shaped, and through holes are provided on the outside of the heat dissipation ceramic block and on the top of the connecting plate.

[0015] Preferably, the outer walls of the plurality of protective covers are provided with heat sinks three, and the inner walls of the protective covers are provided with heat dissipation pads four.

[0016] Preferably, the side wall of the protective cover is provided with an opening, the inner wall of the opening is provided with a rubber strip, the side wall of the protective cover is threadedly connected with a threaded rod, and the side wall of the connecting plate is provided with a threaded groove matching the threaded rod.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the utility model has the following advantages: during use, the heat dissipation pad 1 and the heat sink 1 can be used in conjunction with the heat dissipation pad 2, the heat dissipation pad 3 and the heat sink 2 arranged on the inner wall of the protective box to increase the heat dissipation area of ​​the copper plate body and further improve its heat dissipation efficiency; secondly, the plurality of heat dissipation ceramic blocks can be used in conjunction with the heat sink 3 and the heat dissipation pad 4 on the protective cover to increase the heat dissipation area of ​​the connection, thereby better dissipating the heat at the connection terminal connection, ensuring the stability of the copper busbar connection in the use project, and reducing the impact of poor heat dissipation on the use;

[0019] Moreover, after connecting multiple lithium batteries, the protective cover can be used to seal and support the connection points of the copper busbar terminals, which can not only avoid contamination by impurities and dust, but also the heat dissipation pads on the inner wall of the protective cover can be used to press and fix the wires and screws at the connection points, thereby reducing the influence of vibration, which may cause the wires and screws at the connection points to loosen or break, affecting the stability and safety of the battery pack. Secondly, the multiple heat dissipation pads themselves have a certain buffering property, which can better cooperate with the buffer pad to reduce the influence of external vibration on the use of the connecting copper busbar, thereby ensuring its stability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the protection box of the utility model;

[0022] Figure 3 This is a schematic diagram of the copper plate structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the protective cover structure of the utility model;

[0024] Explanation of the numbers in the figure: 100, fixing plate; 110, heat dissipation pad 1; 120, heat sink 1; 200, protective box; 210, heat dissipation pad 2; 220, heat dissipation pad 3; 230, heat sink 2; 240, heat dissipation hole; 250, high temperature resistant insulating sleeve; 251, copper plate; 252, connecting terminal; 300, connecting plate; 310, buffer pad; 320, heat dissipation ceramic block; 330, protective cover; 340, heat sink 3; 350, rubber strip; 360, heat dissipation pad 4; 370, threaded rod. DETAILED DESCRIPTION

[0025] In the description of the present invention, 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" 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.

[0026] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] See also Figure 1-4 , the utility model provides a technical solution:

[0029] A lithium battery connecting copper busbar comprises a fixing plate 100, a heat dissipation pad 110 and a heat sink 120 are arranged on the top of the fixing plate 100, a plurality of heat sinks 120 are connected to a protective box 200 after passing through the heat dissipation pad 110, a copper plate 251 is arranged inside the protective box 200, connecting terminals 252 are arranged at both ends of the copper plate 251, a high temperature resistant insulating sleeve 250 is sleeved on the outer wall of the copper plate 251, connecting plates 300 are arranged on both sides of the fixing plate 100, and protective covers 330 are connected to the outer walls of the plurality of connecting plates 300 by pins.

[0030] In some embodiments: heat dissipation pad 1 110, heat dissipation pad 2 210, heat dissipation pad 3 220 and heat dissipation pad 4 360 are all made of heat dissipation silicone pad material, which is usually a mixture of silicone and thermal conductive filler. The heat dissipation silicone pad can effectively conduct and dissipate heat, help reduce the temperature of connecting components, and thus improve the heat dissipation effect, which belongs to the prior art.

[0031] Specifically, a heat dissipation pad 210 is provided at the bottom of the inner cavity of the protection box 200, a heat sink 230 is provided at the top of the inner cavity of the protection box 200, and a heat dissipation hole 240 is opened on the top outer wall of the protection box 200 to facilitate better heat dissipation of the copper plate 251 body.

[0032] Furthermore, a heat dissipation pad 3 220 is provided at the bottom of the plurality of heat sinks 230 , and the high temperature resistant insulating sleeve 250 is clamped and adhered between the heat dissipation pad 210 and the heat dissipation pad 3 220 , so as to better contact the surface of the copper plate 251 , thereby improving its thermal conductivity efficiency.

[0033] Furthermore, a buffer pad 310 is arranged on the top of the multiple connecting plates 300, a heat dissipation ceramic block 320 is arranged on the top of the buffer pad 310, and an arc groove is opened at the bottom of the heat dissipation ceramic block 320 to better expand the heat dissipation area of ​​the connection terminal 252 and better improve its heat dissipation area.

[0034] Furthermore, the buffer pad 310 is made of rubber, the outer wall of the heat dissipation ceramic block 320 is honeycomb-shaped, and through holes are provided on the outside of the heat dissipation ceramic block 320 and the top of the connecting plate 300, so as to facilitate fixing the wire body with screws.

[0035] It is worth noting that the outer walls of the plurality of protective covers 330 are provided with heat sinks three 340, and the inner walls of the protective covers 330 are provided with heat dissipation pads four 360, which facilitate better pressure limiting of the connection and certain heat conduction.

[0036] It is worth noting that the side wall of the protective cover 330 is provided with an opening, and the inner wall of the opening is provided with a rubber strip 350;

[0037] In some embodiments, the connecting wire can be extended to the outside through the opening, or a threading hole can be opened on the outer wall of the other side of the protective cover 330 for threading and leading out the wire.

[0038] The side wall of the protective cover 330 is threadedly connected to a threaded rod 370, and the side wall of the connecting plate 300 is provided with a threaded groove matching the threaded rod 370, so as to facilitate the protective cover 330 to protect the connecting terminal 252 and the connected wire body and screws or bolts to prevent external impurities from affecting their use.

[0039] Working principle: First, during use, the heat dissipation pad 110 and the heat sink 120 can be used in conjunction with the heat dissipation pad 210, the heat dissipation pad 3 220 and the heat sink 230 arranged on the inner wall of the protective box 200 to increase the heat dissipation area of ​​the copper plate 251 and further improve its heat dissipation efficiency. Secondly, the plurality of heat dissipation ceramic blocks 320 can be used in conjunction with the heat sink 3 340 and the heat dissipation pad 4 360 on the protective cover 330 to increase the heat dissipation area of ​​the connection, thereby better dissipating the heat at the connection terminal 252, ensuring the stability of the copper busbar in the project and reducing the impact of poor heat dissipation on the use. Moreover, after connecting multiple lithium batteries, the protective cover 330 can be used to seal and support the connection of the copper busbar connection terminal 252, which can not only avoid contamination by impurities and dust, but also the heat dissipation pad 360 on the inner wall of the protective cover 330 can be used to press and fix the wires and screws at the connection, thereby reducing the influence of vibration, which may cause the wires and screws at the connection to loosen or break, affecting the stability and safety of the battery pack. Secondly, the multiple heat dissipation pads themselves also have a certain buffering property, which can better cooperate with the buffer pad 310 to reduce the influence of external vibration on the use of the connecting copper busbar, thereby ensuring its stability in use.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lithium battery connecting copper bar, comprising a fixing plate (100), characterized in that: A heat dissipation pad (110) and a heat sink (120) are arranged on the top of the fixed plate (100); a plurality of heat sinks (120) are connected to a protective box (200) after passing through the heat dissipation pad (110); a copper plate (251) is arranged inside the protective box (200); connection terminals (252) are arranged at both ends of the copper plate (251); a high temperature resistant insulating sleeve (250) is sleeved on the outer wall of the copper plate (251); connecting plates (300) are arranged on both sides of the fixed plate (100); and a plurality of the rear outer walls of the connecting plates (300) are connected to a protective cover (330) by means of a pin shaft.

2. A lithium battery connecting copper bar according to claim 1, characterized in that: A second heat dissipation pad (210) is provided at the bottom of the inner cavity of the protection box (200), a second heat dissipation sheet (230) is provided at the top of the inner cavity of the protection box (200), and a heat dissipation hole (240) is provided on the outer wall of the top of the protection box (200).

3. A lithium battery connecting copper bar according to claim 2, characterized in that: A heat dissipation pad three (220) is arranged at the bottom of the plurality of heat dissipation fins two (230), and the high temperature resistant insulating sleeve (250) is clamped and adhered between the heat dissipation pad two (210) and the heat dissipation pad three (220).

4. A lithium battery connecting copper bar according to claim 3, characterized in that: A buffer pad (310) is arranged on the top of the plurality of connection plates (300), a heat dissipation ceramic block (320) is arranged on the top of the buffer pad (310), and an arc groove is provided on the bottom of the heat dissipation ceramic block (320).

5. A lithium battery connecting copper bar according to claim 4, characterized in that: The buffer pad (310) is made of rubber material, the outer wall of the heat dissipation ceramic block (320) is honeycomb-shaped, and through holes are provided on the outside of the heat dissipation ceramic block (320) and on the top of the connection plate (300).

6. A lithium battery connecting copper bar according to claim 5, characterized in that: The outer walls of the plurality of protective covers (330) are provided with heat sink three (340), and the inner walls of the protective covers (330) are provided with heat dissipation rubber pads four (360).

7. A lithium battery connecting copper bar according to claim 6, characterized in that: The side wall of the protective cover (330) is provided with an opening, the inner wall of the opening is provided with a rubber strip (350), the side wall of the protective cover (330) is threadedly connected to a threaded rod (370), and the side wall of the connecting plate (300) is provided with a threaded groove matching the threaded rod (370).

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