WO2019001300A1

WO2019001300A1 - Battery connection support

Info

Publication number: WO2019001300A1
Application number: PCT/CN2018/091765
Authority: WO
Inventors: 许玉林; 龚晓冬; 王爱淑; 娄豫皖; 顾江娜; 张旭; 许祎凡
Original assignee: 苏州安靠电源有限公司
Priority date: 2017-06-30
Filing date: 2018-06-19
Publication date: 2019-01-03
Also published as: CN107425164A

Abstract

Disclosed in the present application is a battery module, comprising: a battery connection support on which a plurality of battery plug-in holes are arranged into a matrix, a plurality of battery series-connection plates respectively embedded in the battery plug-in holes, and a plurality of battery cells respectively embedded in the battery plug-in holes and connected with the battery series-connection plates. The battery connection support comprises: an insulating layer at the lower layer and a conducting layer at the upper layer. The insulating layer is an insulating support, and a plurality of support holes arranged into a matrix are formed in the insulating support; the conducting layer is composed of a plurality of metal parallel bars arranged in parallel; a row of parallel bar holes disposed at intervals along the length direction of the metal parallel bars are formed in the metal parallel bars and run through the metal parallel bars; the metal parallel bars are fixedly connected with the insulating support; the support holes and the parallel bar holes jointly form the battery plug-in holes; the battery series-connection plates and the hole walls of the parallel bar holes are elastically contacted and connected. The battery module of the present application is compact and stable in structure and conveniently assembled, has excellent heat dissipation performance, and omits a traditional parallel network structure.

Description

Battery connection bracket

Technical field

The present application relates to the field of battery technologies, and in particular, to a battery connection bracket for connecting a plurality of battery cells to form a battery module.

Background technique

Lithium-ion rechargeable batteries are the batteries with the highest energy consumption and the longest service life. The technology is mature and the production volume is huge. It has entered various fields of people's lives. The existing cylindrical lithium ion battery module generally comprises a battery connection bracket with a plurality of battery insertion holes, and a plurality of battery series pieces respectively embedded in the respective battery insertion holes, and embedded in each battery insertion device. A plurality of battery cells in the hole and in contact with each battery in series are connected to each other, and are respectively inserted in the respective battery insertion holes and connected to the corresponding battery series sheets (direct contact connection or soldering). In practical applications, the battery cells are connected in parallel with each other by means of the aforementioned parallel connection, and the series connection piece is connected in series with the battery cell inserted on the other side of the battery connection bracket, so that a plurality of battery modules are assembled together to form a large-capacity lithium. Ion battery.

However, some of the Achilles heel of lithium-ion battery modules have not been completely solved fundamentally, such as safety, there is still the danger of fire and explosion. Engineering and technical personnel working in the industry are taking various measures to eliminate this danger. For example, in Chinese patent application CN101369649A, a battery connecting mechanism is proposed, which uses an elastic connecting piece to clamp the negative electrode case of the cylindrical battery to realize electrical connection, thereby eliminating the welding process of the negative electrode and eliminating the welding heat may cause the core component of the battery. s damage. It not only improves safety, but also improves the processing performance and rigidity of the battery pack, and is more suitable for mechanized operation. In 2012, the Henan Cologne Group also proposed a similar patent, indicating the effectiveness of this method. However, this method has fewer spring leaf contacts and the resistance is still too large. Moreover, the outward expansion is inconvenient and the heat dissipation is not ideal.

At present, the method of battery assembly in most enterprises still uses the thin metal connecting piece and the positive and negative electrodes of the battery to be connected in series and in parallel. The connecting piece is thin, narrow and long, has poor electrical conductivity, high connection resistance, and high energy consumption. Moreover, the energy consumption is turned into heat, which promotes the rise of the battery temperature. An increase in temperature will shorten the life of the battery. Not to mention the potential hazards associated with negative soldering.

In order to improve the heat dissipation capacity of the battery, many good methods have been created. For example, Zhang Hengyun et al. proposed in Chinese patent application CN201610144883.2 to add a heat conducting sleeve and a heat pipe to the battery, and discharge the heat with a tempering gas or liquid. The maximum temperature difference of the battery in different positions is reduced to only 1.5 ° C when charging at a high current. Gu Huanlong et al. proposed in Chinese patent application CN2009102097104 to inject thermal adhesive into the battery pack, which also has a good effect.

Wang Huaiyun proposed in Chinese patent application CN201220400944.4 that a parallel frame of a plurality of battery sockets is stretched by a thin metal plate, and a battery pin is fixed around the insertion hole to fix the battery negative electrode. Not only is the connection convenient and the thermal conductivity is good.

The connecting piece is used to solder the positive and negative electrodes to make a combined connection, and the connection resistance is high. Especially for the negative electrode welding, the welding heat is transmitted to the inside of the battery, and the core member such as the diaphragm plate is close to the welded portion, and they are all afraid of heat. If they are burnt, it is possible to develop an internal short circuit during use. The internal short circuit has the risk of being turned into thermal runaway, and thermal runaway is an important cause of fire and explosion. Moreover, the components welded by the connecting piece are loose, and it is difficult to move during operation, and the large part is more difficult to process, and is not suitable for mechanized work.

The negative electrode is removed by a spring piece (separated piece with claws), but it is troublesome to expand outward with the dovetail and the dovetail groove, and the heat dissipation is not so good. The heat-dissipating heat pipe and the heat-conducting rubber have good heat dissipation effect, but these additional parts have no other use except temperature adjustment, which increases cost and complexity. The porous parallel frame has good electrical conductivity and good heat dissipation, but dozens of holes are simultaneously punched and stretched, which is difficult to process. Moreover, due to the structural limitation, the elastic claws are short, so the elastic force is difficult to control, and the inserted battery is also easily skewed.

Although the interconnection of the batteries can realize the parallel connection of the batteries, it needs to be welded and fixed with the battery in series during assembly, and the assembly is difficult. In addition, although the interconnection is connected to the battery cell, the heat of the battery can be absorbed and transmitted to some extent, but since the interconnection is very thin, the heat transfer rate is very slow. Moreover, the parallel connection is usually embedded in the battery connection bracket, which is difficult to directly connect with the external heat dissipation mechanism, and cannot derive heat.

Summary of the invention

The purpose of the present application is: for the above technical problem, the present application proposes a battery connection bracket, which is compact and stable in structure, convenient in assembly, and has excellent electrical conductivity and heat dissipation capability.

The technical solution of the present application is:

A battery connecting bracket is provided with a plurality of battery insertion holes arranged in a matrix, wherein the battery connecting bracket comprises an insulating layer located in a lower layer and a conductive layer located in an upper layer, wherein the insulating layer is an insulating bracket. The insulating bracket is provided with a plurality of bracket holes distributed in a matrix, the conductive layer is composed of a plurality of parallel metal strips arranged in parallel, and the metal parallel strips are arranged through a row along the length direction of the metal parallel strips. Parallel strip holes, the metal parallel strips are fixedly connected to the insulating bracket, and the bracket holes and the parallel strip holes together form the battery insertion hole.

Based on the above technical solutions, the application further includes the following preferred solutions:

The method further includes inserting a battery in series with the battery insertion hole in the battery insertion hole, and the battery serial piece is elastically contacted with the hole wall of the parallel bar hole.

The battery tandem piece includes an annular ring piece and a bottom piece fixedly connected at an axial bottom end of the ring piece, and the ring piece is formed with a plurality of outwardly protruding elastic pieces protruding radially outward and protruding radially inwardly. And a plurality of inverting elastic pieces, wherein the outer turning elastic piece is elastically coupled to the hole wall of the parallel strip hole.

Each of the metal parallel bars constituting the conductive layer are electrically connected to each other.

The metal parallel strip has a thickness of not less than 5 mm.

The metal parallel strip is a monolithic structure, which is formed by welding or fixing a plurality of metal tubes arranged in a straight line.

The bracket hole and the parallel strip hole are both round holes, and the metal parallel strip is formed by abutting the left half and the right half of the split structure, and the opposite sides of the left half and the right half are both disposed. There is a row of spaced semicircular grooves, the semicircular grooves on the left half and the semicircular grooves on the right half forming the parallel strip holes.

The axial upper end of the bracket hole is formed with a ring of flanges projecting radially inward.

The metal parallel strip and the insulating bracket are fixedly connected by a pressing connecting block, and the pressing connecting block comprises a strip-shaped bead and a plurality of fixing plugs connected to the same side of the bead and spaced apart along the length of the bead. a plurality of plug holes are defined in the insulating bracket, and the fixing plugs are fixedly inserted into the plug holes through a gap between adjacent metal parallel bars, and the bead is pressed on an upper part of the metal parallel bar. Thereby, the fixed connection of the metal parallel strip and the insulating bracket is realized.

The metal parallel strip is aluminum.

The advantages of this application are:

1. This application changes the structure of the battery connection bracket in the conventional battery module, and sets it into a two-layer structure of an upper and lower insulation layer and a metal conductive layer. The battery serial piece is inserted into the battery insertion hole and naturally contacts the conductive layer. Moreover, the contact area is large, so that the parallel connection of each battery in the module is realized by the metal conductive layer, and the metal conductive layer is different from the traditional interconnection, and has a certain thickness, and the contact area with the battery and the battery serial piece is large, Quickly absorb and transfer heat from the battery. At the same time, when the battery temperature is low, the metal conductive layer can also quickly transfer the heat of the external heating device to the battery.

2. The battery connection bracket has a parallel bar with high strength metal material, which has strong shock and vibration resistance.

3. The metal parallel bar and each battery cell connection not only have good electrical conductivity, but also have good heat conduction. The heat of the intermediate battery can be quickly transferred to the extreme end through the metal parallel strip, and the heat-dissipating lead piece at the end can be connected with other heat-dissipating mechanisms to improve the heat dissipation capability. The fixing between the adjacent parallel strips by the conductive colloid increases the reliability of the contact, and the integrity of each battery module is enhanced.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. The drawings in the following description are only some embodiments of the present application, which are common in the art. For the skilled person, other drawings can be obtained from these drawings without any creative work.

1 is a general assembly diagram of a battery module in the first embodiment of the present application;

2 is an exploded view of a battery module in the first embodiment of the present application;

3 is a schematic perspective structural view of a first viewing angle of an insulating bracket according to Embodiment 1 of the present application;

4 is a schematic perspective structural view of a second viewing angle of an insulating bracket according to Embodiment 1 of the present application;

5 is a schematic perspective structural view of a parallel strip in the first embodiment of the present application;

6 is a schematic perspective structural view of a battery serial piece in the first embodiment of the present application;

FIG. 7 is a schematic perspective structural view of a compression connecting block according to Embodiment 1 of the present application; FIG.

8 is a general assembly diagram of a battery module in Embodiment 2 of the present application;

9 is an exploded view of a battery module in Embodiment 2 of the present application;

10 is a schematic perspective structural view of a first viewing angle of an insulating bracket according to Embodiment 2 of the present application;

11 is a perspective view showing a perspective view of a second viewing angle of an insulating bracket according to Embodiment 2 of the present application;

12 is a schematic exploded view of a parallel strip in the second embodiment of the present application;

13 is a schematic perspective structural view of a battery tandem piece in the second embodiment of the present application;

14 is a schematic perspective structural view of a compression connecting block according to Embodiment 2 of the present application;

Among them: 1-battery series, 101-ring, 101a-overturned shrapnel, 101b-inverted shrapnel, 101c-battery insert guide, 101d-lower claw, 102-back, 102a-bump, 2- Battery unit, 3-insulated bracket, 301-bracket hole, 302-plug hole, 4-parallel strip, 401-parallel strip hole, 402-left half strip, 403-right half strip, 404-heat sink lead sheet, 5- Press the connection block, 501 - bead, 502 - fixed plug, 502a - deformation joint.

Detailed ways

The above scheme will be further described below in conjunction with specific embodiments. It is to be understood that the examples are intended to be illustrative, and not to limit the scope of the application. The implementation conditions employed in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in the conventional experiment.

The words indicating the orientations of the top, bottom, left, and right, as used herein, are only for the position of the illustrated structure in the corresponding drawings. The serial numbers themselves for the components herein, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. As used herein, "connected" or "coupled", unless otherwise specified, includes both direct and indirect connections.

Embodiment 1:

1 to 7 show a specific application example of the battery connecting bracket of the present application in a battery module. The battery module is a cylindrical lithium ion battery module, which is the same as the conventional battery module. The battery connection bracket (also referred to as a battery bracket in the industry) has a plurality of battery insertion holes arranged in a matrix on the battery connection bracket, and a battery serial piece 1 is embedded in each battery insertion hole, and each A cylindrical lithium ion battery cell 2 is inserted into each of the battery insertion holes. Specifically, in this embodiment, the negative end of the battery cell 2 is inserted into the battery insertion hole of the battery connection bracket, and is directly in contact with the battery serial piece 1 in the battery insertion hole (not welded).

A key improvement of this embodiment is that the battery connection bracket described above adopts a completely new structural form including an insulating layer located in the lower layer and a conductive layer located in the upper layer. Wherein: the insulating layer is an approximately rectangular insulating bracket 3, and the insulating bracket 3 is provided with a plurality of bracket holes 301 distributed in a matrix. The conductive layer 3 is composed of a plurality of parallel metal strips 4 arranged side by side and parallel to each other. The metal parallel strips 4 are provided with a row of parallel strip holes 401 spaced along the length direction of the metal parallel strips. The metal parallel strip 4 is fixedly connected to the insulating bracket 3. The bracket hole 301 and the parallel strip hole 401 together form the battery insertion hole, and the battery serial piece 1 is elastically contacted with the hole wall of the parallel strip hole 401.

The above insulating bracket 3 is usually made of a plastic material. The metal parallel bars 4 are typically made of aluminum.

The battery series piece 1 is in contact connection with the hole wall of the metal parallel strip 4, and the battery series piece 1 is connected to the corresponding battery cell 2, so that the respective battery cells connected in the same metal parallel strip 4 are connected by the metal parallel strip 4 Parallel connection eliminates the need for a traditional parallel connection. Moreover, since the metal parallel strip 4 is made of a metal material and has a certain thickness, it has good heat conduction and heat dissipation capability, and can quickly absorb and transfer heat of each battery cell 2, thereby greatly improving the battery module. Thermal performance.

Moreover, the ends of the metal parallel strips 4 have heat-dissipating strips 404 with a flat plate structure. In practical applications, the heat-dissipating strips 404 are connected to external heat-dissipating mechanisms (such as the inner wall of the battery box) to absorb them. The heat is transferred out. Moreover, the heat-dissipating lead-out piece 404 adopts a flat-plate structure, so that when a plurality of battery modules of such a structure are combined in series and in parallel to form a large-capacity battery, the adjacent two battery modules are supported by the heat-dissipating lead pieces to ensure a large-capacity battery. Structural stability.

Further, the outer contour of the insulating bracket 3 is rectangular, and after the assembly is completed, the heat dissipation lead piece 404 is arranged flush with the outer edge of the insulating bracket 3.

In order to further improve the heat dissipation performance of the battery module, it is preferable to connect the battery cells 2 to the hole walls of the parallel strip holes 401, and it is preferable to ensure the thickness of the metal parallel bars 4 (ie, along the axis of the battery insertion holes). The thickness) is not less than 5 mm.

In order to make the respective battery cells connected to the same battery connection bracket in FIG. 1 are connected in parallel, in the present embodiment, the respective metal parallel bars 4 constituting the conductive layer are electrically connected to each other. These metal parallel bars 4 are specifically electrically connected to each other in such a manner that the gap between the adjacent metal parallel bars 4 is filled with a conductive paste.

In this embodiment, each of the metal parallel bars 4 is a monolithic structure, which is formed by sintering or fixing a plurality of metal pipes arranged in a row.

In this embodiment, the metal parallel strips 4 and the insulating brackets 3 are fixedly connected together by pressing the connecting blocks 5. Specifically, the pressing connection block 5 includes an elongated bead 501 and a plurality of fixing plugs 502 connected to the same side of the bead and spaced apart along the length of the bead. The insulating bracket 3 defines a plurality of plug holes 302. The fixing plug 502 is fixedly inserted into the plug hole 302 through the gap between the adjacent metal parallel bars 4, and the bead 501 is pressed on the upper portion of the metal parallel strip 4, thereby realizing the fixing of the metal parallel strip 4 and the insulating bracket 3. connection.

The head of the fixing plug 502 is a hemispherical structure, and the hemispherical structure is provided with at least one deformation slit 502a. The diameter of the hemispherical structure is slightly larger than the aperture of the plug hole 302. The deformation joint enables the hemispherical structure of the head of the fixed plug 502 to have a certain elastic deformation capability, thereby ensuring that the hemispherical structure of the head of the fixed plug 502 can be smoothly inserted into the plug hole, and the hemispherical structure is tightly coupled with the plug hole. Difficult to pull out.

The fixing plug 502 has an outer surface corresponding to the outer surface of the metal parallel strip 4 - a concave curved surface, so that the fixing plug can closely fit the metal parallel strip 4, and the fixing plug is just tightly supported in the adjacent two metals in parallel Between strips 4 to prevent the metal parallel strip 4 from shaking.

The pressing connecting block 5 is made of plastic material. Both the compression joint block 5 and the insulating bracket 3 are injection molded.

Moreover, in the present embodiment, the battery tandem sheet 1 also adopts a completely new structural form, which includes an annular ring piece 101 and a backsheet 102 fixedly connected to the axial bottom end of the ring piece, and the ring piece 101 is formed around the ring piece 101. A plurality of everted shrapnels 101a projecting radially outward and a plurality of inwardly projecting elastic pieces 101b projecting radially inward. A battery insertion guide piece 101c is also formed at the axial top end of the ring piece 101. In FIGS. 1 and 2, the everted shrapnel 101a is elastically coupled to the wall of the battery insertion hole, and the inverting elastic piece 101b is elastically coupled to the outer wall of the battery unit 2 in the drawing. The battery insertion guide piece 101c is for guiding the battery unit into the battery insertion hole.

More specifically, the above-described everted shrapnel 101a and inverted shrapnel 101b are formed by stamping of the ring piece 101, and both ends of the length of the everted shrapnel 101a are integrally connected with the body structure of the ring piece 101, and the central portion of the everted shrapnel 101a is radially Protruding outward. Both ends of the length of the inversion elastic piece 101b are integrally connected with the body structure of the ring piece 101, and the central portion of the inversion elastic piece 101b protrudes radially inward.

The term "radial" as used herein refers to the ring piece 101 as a reference unless otherwise specified.

The plurality of everted shrapnels 101a and the plurality of inverting shrapnels 101b described above are alternately arranged in the circumferential direction.

In order to facilitate the fabrication of the above-mentioned battery tandem sheet 1, the ring piece 101 and the backsheet 102 of the battery tandem sheet 1 in this embodiment are of a split type welded structure, that is, the ring piece 101 and the back sheet 102 are not monolithic structures, and the two are fixedly connected by welding. Together. Specifically, the bottom end of the ring piece 101 is formed with a plurality of radially inwardly bent lower jaw pieces 101d, and the lower claw piece 101d is welded and fixed to the back piece 102.

In practical applications, a plurality of battery modules as shown in FIG. 1 may be configured, and the upper end (positive end) of each battery cell 2 on one of the battery modules is inserted into the lower portion of the battery connection bracket of the other battery module, and The series connection of the battery connection brackets on the other battery module (if necessary, the two can be soldered and fixed), so that the series connection of the two battery modules is realized. A plurality of battery modules shown in FIG. 1 are combined in series and in parallel to form a large-capacity lithium ion battery.

Each of the battery cells 2 in the battery module of FIG. 1 is connected in parallel with each other by a metal parallel bar 4, and the battery cells are connected in series with the battery cells inserted on the other side of the battery connection bracket, so that a plurality of battery modules are assembled in the battery module. Together, a large-capacity lithium-ion battery is formed.

In order to prevent the battery serial piece 1 from being detached from the battery insertion hole by the axial pressure of the battery cell 2, in the embodiment, a hole radially inwardly convex is formed at the hole wall of the bracket hole 301 on the insulating frame 3. The flange (the bracket hole 301 has a smaller aperture at one end and a larger aperture at the other end, compared with FIG. 3 and FIG. 4), the flange is used to limit the battery cell and the battery series to prevent the battery serial sheet 1 from being subjected to the battery sheet. The axial force of the body 2 is released from the battery insertion hole.

Because of the presence of the above-mentioned flange, if the backsheet 102 has a planar structure, it is difficult to contact the positive terminal of the battery (refer to Figs. 8 and 9). In this regard, the present embodiment punches a downwardly projecting protrusion 102a in the middle of the backsheet 102, the protrusion being circular so as to be inserted into the battery terminal (usually the positive terminal) under the battery connection bracket of FIG. The bumps 102a are in good contact.

Embodiment 2:

8 to FIG. 14 show a specific application example of the battery connection bracket of the present application in another battery module. In this example, the structure of the battery module is basically the same as that of the battery module in the first embodiment, and the main difference is different. The point is:

First, in this embodiment, the positive terminal of each battery cell 2 (instead of the negative terminal of the battery cell in the first embodiment) is inserted into the battery insertion hole of the battery connection bracket, and is inserted into the battery insertion hole. The battery is connected in series with the soldering tab 1 (instead of the separate contact connection in the first embodiment). Specifically, the positive terminal of the battery cell 2 is soldered to the bump 102a on the backsheet 102 of the battery tandem sheet 1.

Secondly, in this embodiment, the metal parallel strip 4 is no longer formed by the integrated structure of the first embodiment, but is formed by the left half strip 402 and the right half strip 403 of the split structure being butted, the left half strip 402 and The opposite sides of the right half 403 are each provided with a row of semicircular grooves arranged at intervals, and the semicircular grooves on the left half 402 are formed together with the semicircular grooves on the right half 403. Parallel strip holes 401 are described. It is not difficult to understand that the metal parallel strip 4 is provided as a split structure in which the left half strip 402 and the right half strip 403 are butted, which facilitates the assembly in the battery module.

Thirdly, in this embodiment, the heat-dissipating strips of the flat structure are not additionally provided at both ends of the length of the metal parallel strips 4, but the ends of the length of the metal parallel strips 4 are made into a planar structure, and the plane and the insulating bracket 3 are The outer edges are arranged flush.

It should be noted that the battery connection bracket of the present application can be used alone without the battery serial piece in practical application, and only needs to insert the extreme of the battery into the battery insertion hole, and ensure that the battery terminal and the parallel hole 401 are electrically connected. The contact is connected to achieve parallel connection between the batteries. The upper and lower batteries are inserted into the battery insertion hole and the positive and negative terminals are directly contacted, thereby achieving series connection of the upper and lower batteries.

The above embodiments are only for explaining the technical concept and the features of the present application, and the purpose of the present invention is to enable the understanding of the contents of the present application and the implementation of the present application. Equivalent transformations or modifications made in accordance with the spirit of the main technical solutions of the present application are intended to be included within the scope of the present application.

Claims

A battery connecting bracket is provided with a plurality of battery insertion holes arranged in a matrix, wherein the battery connecting bracket comprises an insulating layer located in a lower layer and a conductive layer located in an upper layer, wherein the insulating layer is an insulating bracket (3) The insulating support (3) is provided with a plurality of support holes (301) distributed in a matrix, the conductive layer being composed of a plurality of metal parallel bars (4) arranged side by side, the metal parallel bars (4) A row of parallel strip holes (401) spaced along the length direction of the metal parallel strip is disposed through, the metal parallel strips (4) are fixedly connected with the insulating brackets (3), the bracket holes (301) and the parallel connection The strip holes (401) collectively form the battery insertion holes.
The battery connection bracket according to claim 1, further comprising a battery series piece (1) embedded in said battery insertion hole, said battery series piece (1) and said parallel bar hole The wall of (401) is elastically contacted.
A battery connection bracket according to claim 2, wherein said battery tandem sheet (1) comprises an annular ring piece (101) and a backsheet (102) fixedly attached to an axial bottom end of said ring piece, said ring A plurality of everted shrapnels (101a) projecting radially outwardly and a plurality of inwardly projecting elastic pieces (101b) projecting radially inward are formed around the sheet (101), and the eversion shrapnel (101a) The wall of the parallel strip hole (401) is elastically abutted against the connection.
A battery connecting bracket according to claim 1, wherein each of said metal parallel bars (4) constituting said conductive layer is electrically connected to each other.
The battery connection bracket according to claim 1, wherein said metal parallel strip (4) has a thickness of not less than 5 mm.
The battery connecting bracket according to claim 1, wherein the metal parallel strip (4) is a unitary structure, which is formed by welding or sintering a plurality of metal tubes arranged in a straight line.
The battery connection bracket according to claim 1, wherein the bracket hole (301) and the parallel strip hole (401) are both circular holes, and the metal parallel strip (4) is separated by a left side of the structure. The half strip (402) and the right half strip (403) are butted together, and the opposite sides of the left half strip (402) and the right half strip (403) are each provided with a row of semicircular grooves arranged at intervals, the left The semi-circular recess on the half strip (402) and the semi-circular recess on the right half strip (403) together form the parallel strip aperture (401).
A battery connecting bracket according to claim 1, wherein said axial end of said bracket hole (301) is formed with a ring of flanges projecting radially inward.
The battery connecting bracket according to claim 1, wherein the metal parallel strip (4) and the insulating bracket (3) are fixedly connected by a pressing connecting block (5), the pressing connecting block (5) a strip-shaped bead (501) and a plurality of fixing plugs (502) connected to the same side of the bead and spaced apart along the length of the bead, the insulating bracket (3) having a plurality of plug holes (302) The fixing plugs (502) are fixedly inserted into the plug holes (302) through a gap between adjacent metal parallel bars (4), and the bead (501) is pressed against the metal parallel bars (4) The upper part of the metal strip (4) is fixedly connected to the insulating bracket (3).
The battery connection bracket according to claim 1, wherein said metal parallel strip (4) is aluminum.