CN115621648B - Double-salient-pole battery connection structure and battery module - Google Patents

Abstract

The present invention discloses a connection structure of a bisalient battery and a battery module, and relates to the field of combined battery connection. The present invention comprises a combined frame, an electrode sleeve and a tube spring, wherein the combined frame comprises a first card slot and a second card slot which are connected, and the opening directions of the first card slot and the second card slot are opposite; the electrode sleeve is a metal hollow cylinder with one end open and the other end closed; the tube spring is a metal hollow cylinder with one end open and the other end closed, and the side wall of the tube spring protrudes outward; the electrode sleeve is embedded in the first card slot, and the tube spring is embedded in the electrode sleeve, and the outer side of the circumferential side wall of the tube spring is abutted against the inner side of the circumferential side wall of the electrode sleeve. The present invention can realize the assembly and disassembly of bisalient batteries, and has a simple structure and low cost.

Description

A double salient pole battery connection structure and battery module

Technical Field

The present invention relates to the field of combined battery connection, and in particular to a connection structure of a cylindrical battery in which both a positive electrode and a negative electrode are convex electrodes and a battery module.

Background Art

In the prior art, a battery module usually needs to be composed of a number of battery cells connected in series or in parallel. The current cylindrical batteries have only one protruding electrode (usually the positive electrode of the battery), and the outer shell of the cylindrical battery is usually the negative electrode of the battery. The series and parallel connections of the battery modules are connected through the battery outer shell electrodes. At present, a cylindrical battery with both the positive and negative electrodes as protruding electrodes has been introduced. Since the cylindrical outer shell of the double convex electrodes is not the positive or negative electrode of the battery, the traditional battery series structure is no longer applicable. In order to solve this problem, the present invention provides a connection structure for a double salient battery and a battery module composed of double salient battery cells.

Summary of the invention

To achieve the above objectives, the present invention provides a connection structure of a bisalient battery and a battery module, which can facilitate the connection and disassembly of the bisalient battery.

On one hand, the present invention provides a bi-salient battery connection structure, wherein the battery is a bi-salient battery, comprising a combined frame, an electrode sleeve and a tube spring, wherein the combined frame comprises a first card slot and a second card slot which are connected, and the opening directions of the first card slot and the second card slot are opposite; the electrode sleeve is a metal hollow cylinder with one end open and the other end closed; the tube spring is a metal hollow cylinder with one end open and the other end closed, and the side wall of the tube spring protrudes outward; the electrode sleeve is embedded in the first card slot, and the tube spring is embedded in the electrode sleeve, and the outer side of the circumferential side wall of the tube spring is abutted and connected with the inner side of the circumferential side wall of the electrode sleeve.

Furthermore, the combined frame comprises a first side surface and a second side surface which are arranged opposite to each other, the first side surface is provided with a plurality of first card slots, and the second side surface is provided with second card slots which respectively correspond to the first card slots.

Furthermore, a partition is provided between the first card slot and the second card slot, and a through hole is opened on the partition, and the diameter of the through hole is larger than the outer diameter of the battery electrode.

Furthermore, the thickness of the separator is smaller than the height of the battery electrode.

Furthermore, the longitudinal cross-section of the side wall of the tube spring is an arc-shaped arc convex outward, and the side wall of the tube spring is provided with through grooves arranged in a uniform array.

Furthermore, the size and shape of the first slot matches and corresponds to the size and shape of the outside of the electrode sleeve.

Furthermore, the shape and size of the open end of the tube spring matches and corresponds to the shape and size of the battery.

The second aspect of the present invention provides a battery module, characterized in that it includes a plurality of batteries and a plurality of the above-mentioned double-salient battery connection structures, wherein the electrodes of the batteries extend from the open ends of the tube springs and are fixedly connected to the bottom surfaces of the tube springs, the tube springs are embedded in the electrode sleeves, and the electrode sleeves are embedded in the first card slots of the combined frame, and another battery is inserted from the open ends of the second card slots and fixedly connected to the outer side of the bottom surface of the electrode sleeves in the first card slots.

Compared with the prior art, the present invention has the following technical effects:

The present invention combines the conductivity and elasticity of the tube spring, and can quickly connect and disassemble the battery through the combined frame. The present invention has a simple connection structure, and a battery module is formed by combining a plurality of bisalient batteries and a bisalient battery connection structure of the present invention, which can realize reliable connection of battery cells. The battery module is easy and quick to assemble and disassemble, and the production cost is low, and the cascade utilization of the single battery can be realized.

The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is an axial side view of a tube spring according to a specific embodiment of the present invention;

FIG2 is an axial side view of an electrode sleeve according to a specific embodiment of the present invention;

3 is a cross-sectional view of a combined frame according to a specific embodiment of the present invention;

FIG4 is a half-sectional view of a single battery assembly unit according to a specific embodiment of the present invention;

FIG. 5 is a half-sectional view of two battery assembly units connected in series according to a specific embodiment of the present invention.

In the figure, 1. tube spring; 1-1. side wall of tube spring; 1-2. bottom plane of tube spring; 1-3. spring sheet; 1-4. through slot; 2. electrode sleeve; 2-1. side wall of electrode sleeve; 2-2. bottom plane of electrode sleeve; 3. combined frame; 3-1. first slot; 3-2. partition; 3-3. through hole; 3-4. second slot; 4. cylindrical battery; 4-1. positive electrode; 4-2. negative electrode; 4`. second cylindrical battery; 4`-1. positive electrode of battery, 4`-2. negative electrode of battery.

DETAILED DESCRIPTION

The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

While some exemplary embodiments of the present invention have been described for the purpose of illustration, it should be understood that the present invention may be implemented in other ways not specifically shown in the drawings.

In a specific embodiment, a bisalient battery connection structure is used to achieve the connection of bisalient batteries. The connection structure includes a tube spring 1, an electrode sleeve 2 and a combination frame 3. The tube spring 1, the electrode sleeve 2 and the combination frame 3 are assembled and installed to achieve the connection of multiple battery cells.

As shown in FIG1 , the tube spring 1 is a metal hollow cylindrical structure with one end open and the other end closed. It can be formed by integral stamping of metal plates or assembled by metal plates. The tube spring 1 includes a circumferential tube spring side wall 1-1 and a tube spring bottom plane 1-2. The shape and size of the circumferential open port of the tube spring 1 match the shape and size of the outside of the battery. During use, the battery is inserted into the tube spring 1 to achieve a stable connection between the battery and the retaining spring. In this embodiment, the battery is a cylindrical battery 4, so the port on the open side of the tube spring 1 is circular.

The middle part of the side wall of the tube spring 1 protrudes outward to form an annular protrusion. The shape of the annular protrusion can be set as needed. When the electrode sleeve 2 is a cylinder, the annular protrusion is a circular annular protrusion. If the electrode sleeve 2 is a prism, the annular protrusion can adopt an annular protrusion structure that matches the prism. The longitudinal section of the annular protrusion is arc-shaped. During use, the tube spring 1 is embedded in the electrode sleeve 2, and the outer side of the side wall protruding outward is abutted and connected with the inner side of the electrode sleeve side wall 2-1. The side wall of the tube spring 1 is provided with through grooves 1-4 arranged in a uniform array to facilitate the assembly and disassembly of the tube spring 1 and the electrode sleeve 2. As shown in the figure, the annular protrusion in this embodiment is a circular annular protrusion. The through grooves 1-4 provided on the circular annular protrusion are strip through grooves 1-4, the number of which is 36. An arc-shaped spring piece 1-3 protruding outward is formed between adjacent strip through grooves 1-4.

As shown in FIG2 , the electrode sleeve 2 is a metal hollow cylindrical structure with one end open and the other end closed, including a circumferential electrode sleeve side wall 2-1 and an electrode sleeve bottom plane 2-2, which can be formed by integral stamping of metal sheets, or can be prepared by an existing metal sheet assembly method. The tube spring 1 is placed in the cavity of the electrode sleeve 2, and the opening direction of the tube spring 1 is the same as the opening direction of the electrode sleeve 2. When the tube spring 1 is inserted into the electrode sleeve 2, in order to achieve a tight contact connection between the annular protrusion of the tube spring side wall 1-1 and the inner wall of the electrode sleeve side wall 2-1, in this embodiment, the inner diameter of the electrode sleeve 2 is greater than or equal to the outer diameter of the circular opening of the tube spring 1, but smaller than the outer diameter of the annular protrusion.

The combined frame 3 includes a first side surface and a second side surface that are arranged opposite to each other. The first side surface and the second side surface can be planes or curved surfaces. A first card slot 3-1 is provided on the first side surface, and a second card slot 3-4 is provided on the second side surface at a position opposite to the first card slot 3-1. As shown in FIG3 , the combined frame 3 of this embodiment is a cubic structure. For the convenience of description, the upper plane is the first side surface, the lower plane is the second side surface, the upper side is the first card slot 3-1, and the lower side is the second card slot 3-4. The opening direction of the first card slot 3-1 is upward, and the opening direction of the second card slot 3-4 is downward. A partition 3-2 is provided at the connection between the first card slot 3-1 and the second card slot 3-4, and a through hole 3-3 is provided on the partition 3-2. ; During the assembly process, as shown in Figure 4, the combination of the electrode sleeve 2 and the tube spring 1 is inserted into the first slot 3-1, and the opening direction of the electrode sleeve 2 is the same as the opening direction of the first slot 3-1, one end of one battery is inserted into the tube spring 1, and the other battery is inserted into the second slot 3-4 from bottom to top, and the electrode of the battery passes through the through hole 3-3 and is fixedly connected to the outer side of the bottom plane 2-2 of the electrode sleeve, thereby connecting the two batteries. Based on this, the size and shape of the first slot 3-1 match the size and shape of the outside of the electrode sleeve 2, the thickness of the partition 3-2 is less than the height of the battery electrode, the inner diameter of the second slot 3-4 is clearance-matched with the diameter of the cylindrical battery 4, and the inner diameter of the first slot 3-1 is clearance-matched with the outer diameter of the electrode sleeve 2.

In a specific embodiment, a plurality of first card slots 3-1 are provided on the first side of the combined frame 3, and second card slots 3-4 corresponding to the first card slots 3-1 are provided on the second side. The combined frame 3 is made of ABS plastic, and the plurality of first card slots 3-1 and the plurality of second card slots 3-4 can be integrally formed. The combined frame 3 in FIG. 3 can be used as a frame unit, and a plurality of frame units can be combined and used. Adjacent frame units can be combined and connected by existing methods such as pasting and snapping. In a specific embodiment, the frame unit can be provided with a plurality of first card slots 3-1 and second card slots 3-4 greater than 1 as needed. The required combined frame 3 is achieved through flexible combination, and the combined connection of the required number of batteries is realized.

In a specific embodiment, a battery module is provided, including a plurality of batteries and a dual-salient battery connection structure described in the above embodiments, wherein the electrodes of the batteries are inserted from the open ends of the tube springs and fixedly connected to the bottom surfaces of the tube springs, the tube springs are embedded in the electrode sleeves, the electrode sleeves are embedded in the first slots of the combined frame, and another battery is inserted from the open ends of the second slots and fixedly connected to the outer sides of the bottom surfaces of the electrode sleeves in the first slots.

Taking the series connection structure of two batteries as an example, as shown in FIG5, for the convenience of description, the upper electrode of the cylindrical battery 4 is set as the positive electrode 4-1 of the battery, and the lower electrode of the battery is set as the negative electrode 4-2 of the battery. The negative electrode 4-2 of the cylindrical battery 4 is inserted into the tube spring 1 from top to bottom, and the negative electrode 4-2 of the battery is welded to the inner side of the bottom plane 1-2 of the tube spring. After the electrode sleeve 2 is sleeved on the outside of the tube spring 1, it is inserted into the first card slot 3-1 of the combined frame, and in order to further make the annular protrusion of the tube spring Stably connected to the inner wall of the electrode sleeve, the annular protruding spring piece 1-3 of the tube spring 1 can be welded to the inner wall of the side wall 2-1 of the electrode sleeve; the positive electrode 4`-1 of the second cylindrical battery 4` extends from bottom to top into the second slot, and the positive electrode 4`-1 of the second cylindrical battery is welded to the outer side of the bottom plane of the electrode sleeve 2, and the negative electrode 4-2 of the cylindrical battery 4 at the upper end is connected to the positive electrode 4`-1 of the cylindrical battery 4` at the lower end through the tube spring 1 and the electrode sleeve 2, so as to realize the series connection of the two single cells.

The number of battery cells in the battery module and the dual-salient battery connection structure adopted can be flexibly set according to needs to achieve rapid connection and disassembly of the battery. The present invention utilizes the conductivity and elasticity of the tube spring to quickly achieve the series connection of the two batteries. It has a simple structure, reliable connection, convenient and quick assembly and disassembly, low production cost, and can realize the disassembly and cascade utilization of single-cell batteries.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims (7)

1. The battery is a double-salient battery and is characterized by comprising a combined frame, an electrode sleeve and a tube spring, wherein the combined frame comprises a first clamping groove and a second clamping groove which are communicated, and the opening directions of the first clamping groove and the second clamping groove are opposite; the electrode sleeve is a metal hollow cylinder with one end open and one end closed; the tube spring is a metal hollow cylinder with one end open and one end closed; the electrode sleeve is embedded in the first clamping groove, the tube spring is embedded in the electrode sleeve, and the outer side of the circumferential side wall of the tube spring is in abutting connection with the inner side of the circumferential side wall of the electrode sleeve;

The tube spring comprises a tube spring side wall and a tube spring bottom plane, the shape and the size of a circumferential tube spring opening port are matched and correspond to those of the outside of the battery, the middle part of the side wall of the tube spring protrudes outwards to form an annular bulge, the longitudinal section of the annular bulge is arc-shaped, through grooves which are uniformly arranged in an array are formed in the side wall of the tube spring, and arc-shaped elastic sheets are formed between every two adjacent through grooves;

The electrode sleeve comprises a circumferential electrode sleeve side wall and an electrode sleeve bottom plane, and the inner diameter of the electrode sleeve is larger than or equal to the outer diameter of the circular opening of the tube spring, but smaller than the outer diameter of the annular protrusion.

2. The connection structure of a biconvex battery according to claim 1, wherein the combined frame comprises a first side surface and a second side surface which are oppositely arranged, a plurality of first clamping grooves are formed in the first side surface, and second clamping grooves corresponding to the first clamping grooves respectively are formed in the second side surface.

3. The connection structure of a biconvex battery according to claim 1, wherein a partition plate is provided between the first and second clamping grooves, and the partition plate is provided with a through hole, and the diameter of the through hole is larger than the outer diameter of the battery electrode.

4. A bi-convex battery connection structure according to claim 3, wherein the thickness of the separator is less than the height of the battery electrode.

5. The connection structure of a double-salient battery according to claim 1, wherein the size and shape of the first clamping groove match and correspond to the size and shape of the outer part of the electrode sleeve.

6. The connection structure of a double-salient battery according to claim 1, wherein the shape and the size of the open end of the tube spring match and correspond to the shape and the size of the battery.

7. A battery module characterized by comprising a plurality of batteries and a biconvex electrode battery connection structure as claimed in any one of claims 1-6, wherein the electrodes of the batteries extend into the open ends of the tube springs and are fixedly connected with the bottom surfaces of the tube springs, the tube springs are embedded in the electrode sleeves, the electrode sleeves are embedded in the first clamping grooves of the combined frame, and the open ends of the other batteries are fixedly connected with the outer sides of the bottom surfaces of the electrode sleeves in the first clamping grooves after being inserted.