CN211208498U

CN211208498U - Battery parallel spring and battery module with same

Info

Publication number: CN211208498U
Application number: CN201921537007.1U
Authority: CN
Inventors: 王小琼
Original assignee: Suzhou Ankao Energy Co Ltd
Current assignee: Suzhou Ankao Energy Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-08-07
Anticipated expiration: 2029-09-16

Abstract

The application discloses parallelly connected shell fragment of battery and battery module of disposing this kind of parallelly connected shell fragment of battery, the parallelly connected shell fragment outline of battery is the U style of calligraphy, including the base of metal material and integrative the side of connecting in two metal materials at this base length both ends, every be provided with on the side along the length direction interval arrangement's of this side a plurality of arc portion of bending to the opening direction mutual disposition of arc portion of bending on two sides the arc portion of bending department integrative stamping process to inside convex electrically conductive shell fragment. According to the battery module, the external parallel spring pieces are adopted to replace the traditional internal parallel connection, and the small battery modules can be connected in parallel into a large battery module very conveniently so as to meet the power consumption requirement; meanwhile, the large-capacity battery module can be easily disassembled into a plurality of small battery modules, so that the portable battery module is convenient to carry.

Description

Battery parallel spring and battery module with same

Technical Field

The application relates to a battery parallel spring and a battery module with the same.

Background

The accumulator is a power supply with wide application, and it will generally adopt a plurality of single batteries to make series-parallel connection combination according to the requirements of voltage and capacity required by load. The current method is to connect all anodes of a certain number of single batteries together by using a bus bar, and then connect all cathodes together by using another bus bar, thus forming a parallel branch. And connecting the single batteries corresponding to the same positions in the multiple parallel branches according to the positive and negative sequences to form multiple series branches, so that the series-parallel combination of the multiple single batteries is formed. However, the welding of the bus bars to the positive and negative electrodes of the battery and the fixation of the battery to the battery are steps that are necessary for assembling the secondary battery or the battery pack, and the operation is troublesome and the safety performance is not high.

Disclosure of Invention

The purpose of the application is: the battery module is characterized in that the battery parallel spring plate is arranged on the battery module, and the battery module is provided with a plurality of small battery modules; meanwhile, the battery module with large capacity can be easily disassembled into a plurality of small battery modules, so that the battery module is convenient to carry and is very suitable for field use.

The technical scheme of the application is as follows:

the utility model provides a parallelly connected shell fragment of battery, its outline is the U style of calligraphy, includes the base of metal material and an organic whole connects in the side of two metal materials at this base length both ends, every be provided with on the side along the length direction interval arrangement's of this side a plurality of arc portion of bending to the opening direction of the arc portion of bending is arranged relatively on two sides, the arc portion of bending department integrative stamping process to inside convex electrically conductive shell fragment.

A battery module comprises a plurality of battery modules arranged from top to bottom in sequence, each battery module comprises a plurality of batteries

The module all includes from preceding then a plurality of battery support of interval arrangement in proper order, every all link up on the battery support and be provided with around extending and control two battery cartridge holes of interval arrangement, be equipped with about between two adjacent battery supports two interval arrangement, and around both ends insert the battery monomer in this two adjacent battery support's battery cartridge hole respectively, the free casing of battery is electrified, still includes the parallelly connected shell fragment of battery of above-mentioned structure, the parallelly connected shell fragment of battery hoops in the periphery of this battery module, and each electrically conductive shell fragment on the parallelly connected shell fragment side of battery supports with correspond the free casing elasticity of battery respectively and lean on arranging.

On the basis of the technical scheme, the battery module further comprises the following preferable scheme:

a plurality of insulating protective sheets are fixedly sleeved outside the side edges.

And one insulating protection sheet is arranged between any two adjacent arc bending parts.

The bottom edge is of a straight line structure.

The bottom edge and the side edges are both made of steel.

In the same battery module, two adjacent battery monomers in front and back are connected in series.

In the same battery module, one end of each of two adjacent battery monomers in the front and back direction is inserted into the same battery inserting hole of the same battery bracket, and the end parts of the two battery monomers are in conductive contact with the metal serial sheet embedded in the battery inserting hole.

The application has the advantages that:

1. by adopting the external parallel spring plate, a plurality of small battery modules can be conveniently assembled into a large-capacity battery module in parallel, so that the power consumption requirement is met. Meanwhile, the large-capacity battery module can be easily disassembled into a plurality of small battery modules, so that the portable battery module is convenient to carry.

2. The conductive elastic sheet arranged on the parallel elastic sheet can be in large-area contact with a charged battery shell, so that the contact resistance is reduced, and the conductivity of the module is enhanced.

3. The insulating protection sheet arranged on the parallel elastic sheets facilitates wiring of outgoing lines in the module, and electric leakage risk is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present application;

fig. 2 is a schematic structural view illustrating a structure in which battery modules are separated from each other after a battery parallel spring of the battery module is removed according to the embodiment of the present disclosure;

fig. 3 is a perspective view of a battery parallel spring in the embodiment of the present application;

FIG. 4 is a front view of a battery parallel spring in the embodiment of the present application;

wherein: 100-battery parallel connection elastic sheet, 200-battery support, 300-battery monomer, 201-battery insertion hole, 101-bottom sheet, 102-side edge, 103-insulation protective sheet, 102 a-arc bending part and 102 b-conductive elastic sheet.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.

One skilled in the relevant art will recognize, however, that one or more of the specific details can be omitted, or other methods, components, or materials can be used. In some instances, some embodiments are not described or not described in detail.

Furthermore, the technical features, aspects or characteristics described herein may be combined in any suitable manner in one or more embodiments. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Thus, any sequence in the figures and examples is for illustrative purposes only and does not imply a requirement in a certain order unless explicitly stated to require a certain order.

The numbering of the components themselves, e.g. "first", "second", etc., is used herein only for distinguishing

The objects described, have no sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

Fig. 1 to 4 show a specific embodiment of the battery module of the present application, which includes three battery modules arranged in sequence from top to bottom, each battery module includes three battery supports 200 arranged in sequence from front to back at intervals, each battery support 200 is an integral injection molding structure, and each battery support 200 is provided with two battery insertion holes 201 extending in front and back in a penetrating manner, and the two battery insertion holes 201 are arranged in a left-right interval. Two cylindrical lithium ion battery monomers 300 which are arranged at left and right intervals are arranged between two adjacent battery supports 200, and the front ends and the rear ends of the two battery monomers 300 are respectively inserted into the battery inserting holes of the two adjacent battery supports. And the case of the battery cell 300 is negatively charged.

In the same battery module, the rear end (positive end) of the front battery cell 300 is inserted into the battery insertion hole 201 of the middle battery bracket 200, the front end (negative end) of the rear battery cell 300 is also inserted into the battery insertion hole 201 of the middle battery bracket 200, and the rear end of the front battery cell 300 and the front end of the rear battery cell 300 are both in conductive contact with a metal series sheet (not shown) inserted into the battery insertion hole 201, so that the front and rear battery cells 300 are connected in series.

The key improvement of this embodiment is that a battery parallel spring 100 is further provided to connect the same layer of battery cells in each battery module in parallel, and the outer contour of the battery parallel spring 100 is U-shaped, and includes a steel bottom side 101 and steel side edges 102 integrally connected to both ends of the length of the bottom side. Wherein the bottom side 101 is a straight line structure extending from left to right; the side edges 102 are curved structures that extend from bottom to top. Each side 102 is provided with three arc-shaped bending portions 102a arranged at intervals along the length direction of the side, and the opening directions of the arc-shaped bending portions 102a on the two sides 102 are arranged oppositely (i.e. the opening of the arc-shaped bending portion 102a on the left side 102 faces to the right, and the opening of the arc-shaped bending portion 102a on the right side 102 faces to the left), and each arc-shaped bending portion 102a is integrally stamped with two conductive elastic pieces 102b protruding inwards. The battery parallel connection piece 100 is hooped on the periphery of the battery module, and each conductive elastic piece 102b on the side edge 102 of the battery parallel connection elastic piece 100 is elastically abutted against a negatively charged shell of the corresponding battery monomer 300 (specifically, a battery monomer on the front side of each battery module), so that the parallel connection of the cathodes of the battery monomers 300 is realized.

In practical applications, a number-leading wire welded to a part of the battery cells is usually disposed in the battery module, and in order to prevent the number-leading wire from directly contacting and scratching the conductive portion of the battery parallel spring 100, which may cause short circuit, in this embodiment, a plurality of insulating protection plates 103 are fixedly sleeved outside the side 102 of the battery parallel spring 100, and the number-leading wire is led out from the gap between the insulating protection plate 103 and the battery cells. Meanwhile, the insulating protection sheet 103 can also reduce the possibility of electric leakage caused by direct contact between the charged side edge 102 and an external conductor, thereby ensuring the electricity utilization safety.

Further, in this embodiment, one insulating protection sheet 103 is disposed between any two adjacent arc-shaped bending portions 102 a.

Of course, in order to connect the negative electrodes of the rear battery cells of each battery module in parallel in fig. 1, one more battery parallel spring 100 having the above-described structure may be disposed in fig. 1.

The above embodiments are only for illustrating the technical concepts and features of the present application, and the purpose of the embodiments is to enable people to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.

Claims

1. The battery parallel connection elastic sheet is characterized in that the outer contour of the battery parallel connection elastic sheet (100) is U-shaped and comprises a bottom side (101) made of metal materials and two side edges (102) made of metal materials and integrally connected to the two ends of the length of the bottom side, a plurality of arc-shaped bending parts (102a) arranged along the length direction of each side edge are arranged on each side edge (102) at intervals, the opening directions of the arc-shaped bending parts (102a) on the two side edges (102) are oppositely arranged, and the arc-shaped bending parts (102a) are integrally punched to form conductive elastic sheets (102b) protruding inwards.

2. A battery module comprises a plurality of battery modules which are sequentially arranged from top to bottom, each battery module comprises a plurality of battery supports (200) which are sequentially arranged from front to back at intervals, each battery support (200) is provided with two battery inserting holes (201) which extend from front to back and are arranged at left to right intervals in a penetrating way, two battery monomers (300) which are arranged at left to right intervals and are respectively inserted into the battery inserting holes of the two adjacent battery supports at the front and back ends are arranged between the two adjacent battery supports (200), the shell of each battery monomer (300) is electrified, characterized in that the battery parallel spring (100) of claim 1 is further included, the battery parallel spring (100) is hooped at the periphery of the battery module, and each conductive elastic sheet (102b) on the side (102) of the battery parallel elastic sheet (100) is elastically abutted against the shell of the corresponding battery cell (300).

3. The battery module according to claim 2, wherein the side (102) is externally fixed with a plurality of insulating protection sheets (103).

4. The battery module according to claim 3, wherein one insulating protection sheet (103) is arranged between any two adjacent arc-shaped bent parts (102 a).

5. The battery module according to claim 2, wherein the bottom side (101) is a straight line structure.

6. The battery module according to claim 2, wherein the bottom side (101) and the side (102) are both steel.

7. The battery module according to claim 2, wherein two of the battery cells (300) adjacent in front and rear are connected in series in the same battery module.

8. The battery module according to claim 7, wherein one end of each of two battery cells (300) adjacent to each other in front and back is inserted into a same battery insertion hole (201) of a same battery holder (200) in the same battery module, and the ends of the two battery cells (300) are in conductive contact with a metal series tab inserted into the battery insertion hole (201).