A lithium battery tab bracket

Abstract

The present invention discloses a lithium battery pole lug bracket, including a bracket body and a busbar formed as a whole by injection molding. The bracket body includes a main body portion and a first fixing portion and a second fixing portion extending outward from both ends of the main body portion, and the busbar is fixed to the main body portion. The same side of the main body portion, the first fixing portion and the second fixing portion extend toward the upper and lower sides to form a protrusion. The present invention provides a lithium battery pole lug bracket that is easy to disassemble and has a stable structure. By forming the busbar and the bracket body into an integral component by injection molding, it is beneficial to fix the busbar and facilitate loading. By arranging a protrusion on one side of the bracket body, the battery module housing can be well limited, thereby improving the product's mechanical stability.

Description

Technical Field

[0001] The invention relates to the technical field of lithium batteries, and in particular to a lithium battery tab bracket. Background Art

[0002] As an energy battery with high reaction efficiency, strong safety and small size, lithium battery is increasingly widely used, especially in the fields of electric vehicles, electric boats, etc. In lithium batteries, in order to prevent technical problems such as short circuit and breakage of the tabs during installation / transportation / use, a bus is usually used to limit, guide and support the tabs, and then the tab bracket is used to fix the bus. In existing lithium batteries, the bus and the tab bracket are usually designed as a split type, that is, the bus is locked to the tab bracket by bolts, etc. This fixing method is not convenient for loading, and it is easy to cause abnormalities such as loose screws after a long time, which makes the lithium battery have safety hazards during use. At the same time, the existing tab bracket usually does not have a structure for upper and lower limit / front and rear limit of the lithium battery shell, which makes the lithium battery shell prone to falling off, displacement, etc., resulting in poor product stability of lithium batteries. Summary of the invention

[0003] In view of the technical problems raised in the background technology, the object of the present invention is to provide a lithium battery tab bracket with reasonable structural design, good stability and capable of limiting the position of the lithium battery shell.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A lithium battery tab bracket includes a bracket body and a busbar formed as a whole by injection molding. The bracket body includes a main body portion and a first fixing portion and a second fixing portion extending outward from both ends of the main body portion, and the busbar is fixed to the main body portion. The same side of the main body portion, the first fixing portion and the second fixing portion extends toward the upper and lower sides to form a protrusion.

[0006] Furthermore, the main body is provided with an open groove on the opposite side of the protruding portion, and the left and right sides of the wall surface of the open groove close to the protruding portion are each provided with a through hole that passes through the main body front and back, one side of the bus is fixed in the open groove, and the other side passes through the two through holes to form two conductive connecting parts.

[0007] Preferably, nickel sheet slots are provided on the left and right sides of the opening slot. The negative electrode copper tab is not welded firmly to the busbar. In order to facilitate the welding of the tab and the busbar, a nickel sheet is installed in the opening slot. The nickel sheet slot can facilitate the fixation of the nickel sheet.

[0008] Preferably, the front side of the main body extends forward above / below the two conductive connecting parts to form two lugs. The side of the lug bracket with lugs can play an insulating role between adjacent module layers, and the side of the lug bracket without lugs can facilitate the connection between adjacent module layers.

[0009] Furthermore, the upper and lower surfaces of the first fixing part and the second fixing part are respectively provided with positioning protrusions. Positioning holes for the positioning protrusions to be inserted into are respectively provided on the upper and lower surfaces of the lithium battery housing. During installation, the positioning protrusions and the positioning holes are engaged in a limited position, so that the positioning of the housing is more stable and reliable, and it is not easy to fall off or shift.

[0010] Furthermore, in order to achieve a fixed connection between the tab bracket and the lithium battery housing, the first fixing portion and the second fixing portion are respectively provided with one or more rivet holes that penetrate vertically.

[0011] Furthermore, in order to more stably fix the lithium battery shell, the upper and lower sides of the middle position of the main body are respectively recessed inward to form two grooves, and the main body is provided with one or more rivet holes that pass through the bottom of the groove.

[0012] Preferably, in order to facilitate the removal and placement of the rivets and extend the service life of the entire module, a steel sleeve is embedded in the riveting hole.

[0013] Furthermore, in order to conveniently and stably fix the information acquisition connector on the tab bracket, a fixing ear for mounting the acquisition connector is fixedly provided on the front side of the main body.

[0014] Furthermore, the material of the bracket body is insulating plastic, and the material of the busbar is aluminum. When manufacturing the tab bracket, the shape of the busbar is determined first, and then the entire injection molded part is manufactured.

[0015] The present invention has the following beneficial effects:

[0016] 1. The bracket body and the busbar are injection molded into an integral part, which is conducive to the fixation of the busbar, the structure is more stable and firm, and it is convenient for loading;

[0017] 2. Protrusions are provided on the upper and lower sides of the tab bracket respectively. The steps formed by the protrusions can limit the forward and backward movement of the upper and lower shells of the lithium battery, reducing the risk of dislocation and falling off of the upper and lower shells;

[0018] 3. An inwardly concave groove is set in the middle of the bracket body, which can limit the left and right displacement of the upper and lower shells after matching with the lithium battery shell, thereby improving the mechanical stability of the product;

[0019] 4. Two lugs are arranged on the front side of the bracket body. The side with the lugs can play an insulating role between the upper and lower adjacent module layers, and the side of the pole bracket without the lugs can facilitate the connection of the conductive copper strips between the upper and lower adjacent module layers;

[0020] 5. Positioning protrusions are respectively arranged on the top and bottom of the first fixing part and the second fixing part to further improve the connection stability of the product;

[0021] 6. A fixing ear is provided on the front side of the bracket body, which can conveniently and stably install the information collection connector;

[0022] 7. A steel sleeve is installed in the riveting hole to facilitate the removal and placement of rivets and extend their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure from another angle of the present invention.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the bracket body.

[0026] Figure 4 A schematic diagram of the three-dimensional structure of the bus.

[0027] Figure 5 It is a schematic diagram of the installation of the pole lug bracket of the present invention.

[0028] Explanation of the main component symbols: 1. Bracket body; 10. Opening slot; 100. Protruding portion; 101. Positioning protrusion; 102. Riveting hole; 103. Groove; 104. Through hole; 105. Nickel sheet slot; 11. Main body; 111. Fixing ear; 112. Lug; 12. First fixing portion; 13. Second fixing portion; 2. Bus; 20. Conductive connecting portion; 3. Steel sleeve. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figure 1-5 As shown, a lithium battery tab bracket includes a bracket body 1 and a busbar 2 formed as a whole by injection molding. When making the entire tab bracket, the shape of the busbar 2 is first determined, and then the entire injection molded part is made. Preferably, the bracket body 1 is made of insulating plastic, and the busbar 2 is made of aluminum.

[0031] The bracket body 1 includes a body part 11 and a first fixing part 12 and a second fixing part 13 extending outward from both ends of the body part 11, and the busbar 2 is fixed on the body part 11. The same side of the body part 11, the first fixing part 12 and the second fixing part 13 extends toward the upper and lower sides to form a protrusion 100. Preferably, the upper and lower surfaces of the first fixing part 12 and the second fixing part 13 are respectively provided with a positioning protrusion 101. A fixing ear 111 for installing the collection connector is fixed on the front side of the body part 11. One or more rivet holes 102 are respectively provided on the first fixing part 12 and the second fixing part 13. The upper and lower sides of the middle position of the body part 11 are respectively recessed inward to form two grooves 103, and the body part 11 is provided with one or more rivet holes 102 that are through from top to bottom on the bottom surface of the groove 103. Preferably, the rivet hole 102 is embedded with a steel sleeve 3.

[0032] The main body 11 is provided with an opening slot 10 on the opposite side of the protruding portion 100, and a through hole 104 is respectively provided on the left and right sides of the wall surface of the opening slot 10 close to the protruding portion 100, which passes through the main body 11 from front to back. One side of the busbar 2 is fixed in the opening slot 10, and the other side passes through the two through holes 104 to form two conductive connecting portions 20. Preferably, nickel sheet clamping slots 105 are respectively provided on the left and right sides of the opening slot 10. Preferably, the front side surface of the main body 11 extends forward above / below the two conductive connecting portions 20 to form two lugs 112.

[0033] The lug bracket of the present invention can well realize the installation and fixation of the busbar 2, and the busbar 2 can well limit, guide and support the lug of the battery body. Through reasonable structural design, the lug bracket of the present invention can limit the displacement of the lithium battery shell in all directions, reduce the risk of misalignment and falling off of the upper and lower shells, and make the structure of the lithium battery module more stable and firm.

[0034] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A lithium battery tab bracket, characterized in that: It comprises a bracket body and a busbar formed as a whole by injection molding, wherein the bracket body comprises a main body portion and a first fixing portion and a second fixing portion extending outward from both ends of the main body portion, the busbar is fixed on the main body portion, and the same side of the main body portion, the first fixing portion and the second fixing portion respectively extend toward upper and lower sides to form protrusions; the main body portion is provided with an open groove on the opposite side of the protrusion, and a through hole penetrating the main body portion from front to back is respectively provided on the left and right sides of the wall surface of the open groove close to one side of the protrusion, one side of the busbar is fixed in the open groove, and the other side passes through two through holes to form two conductive connecting portions; positioning protrusions are respectively provided on the upper and lower surfaces of the first fixing portion and the second fixing portion.

2. A lithium battery tab bracket as claimed in claim 1, characterized in that: The left and right sides of the opening slot are respectively provided with nickel sheet clamping slots.

3. A lithium battery tab bracket as claimed in claim 1, characterized in that: The front side surface of the main body portion extends forward above or below the two conductive connecting portions to form two lugs.

4. A lithium battery tab bracket as claimed in claim 1, characterized in that: The first fixing portion and the second fixing portion are respectively provided with one or more rivet holes penetrating vertically.

5. A lithium battery tab bracket as claimed in claim 1, characterized in that: The upper and lower sides of the middle position of the main body are respectively recessed inward to form two grooves, and the main body is provided with one or more riveting holes penetrating from top to bottom on the bottom surface of the groove.

6. A lithium battery tab bracket as claimed in claim 4 or 5, characterized in that: A steel sleeve is embedded in the riveting hole.

7. A lithium battery tab bracket as claimed in claim 1, characterized in that: A fixing ear for mounting a collection connector is fixedly arranged on the front side of the main body.

8. The lithium battery tab bracket according to claim 1, characterized in that: The support body is made of insulating plastic, and the busbar is made of aluminum.

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