CN114824620A - Battery module - Google Patents

Abstract

The invention discloses a battery module which comprises a busbar, a battery cell, a shell, an end support and a busbar protective shell. Electric core has the utmost point ear of stretching out to both ends, be equipped with in the casing and hold the chamber, the bottom of casing is equipped with a plurality of heat conduction support piece, the diapire of casing is connected to heat conduction support piece's bottom, heat conduction support piece's top butt electric core, end support connection is in the both sides that hold the chamber, end support sets up with heat conduction support piece interval, set up a plurality of guiding holes on the end support, the busbar is connected in one side of end support, utmost point ear stretches out and is connected with the busbar from the guiding hole, the side at end support is connected respectively to every protective housing that converges, a plurality of busbars are established between end support and the protective housing that converges, it is equipped with the card hole on another of first card foot to converge on one of protective housing and end support, card hole and first card foot joint just have many pairs. The battery module provided by the embodiment of the invention has the advantages of stable structure, quick assembly and disassembly, convenience and good insulation.

Description

Battery module

Technical Field

The invention belongs to the technical field of battery production and manufacturing, and particularly relates to a battery module.

Background

In the current society, along with the improvement of environmental protection consciousness of people, more and more people choose to buy the new energy automobile with low energy consumption, and the new energy automobile mainly uses electric energy as main power source.

New energy vehicles are divided into pure electric vehicles and hybrid electric vehicles, but no matter which new energy vehicles are, the battery module can not be used for providing power for the new energy vehicles. The battery module generally includes the casing, electric core, busbar and busbar protective housing isotructure, set up electric core inside the casing, have certain thickness because of casing self, can lead to the unable rapid diffusion of heat that electric core produced in the course of the work, reduce the radiating rate of electric core, multiunit electric core is constructed to be connected through the busbar electricity, and in order to ensure insulating between electric core and the busbar, set up the tip support between electric core and busbar usually, but owing to set up the tip support between electric core and busbar, the in-process tip support that utmost point ear on electric core and busbar are connected can reduce the connection speed of electric core and busbar, and then reduce assembly efficiency, and the connection structure between busbar protective housing and the tip support among the prior art is comparatively complicated, the assembly efficiency who leads to the battery module is low, and be unfavorable for dismantling and maintaining the change.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a battery module which can realize the quick connection of a lug on a battery core and a bus bar, has high assembly efficiency and high heat dissipation speed, and solves the technical problems of low heat dissipation speed and low assembly efficiency of the battery module in the prior art.

A battery module according to an embodiment of the present invention includes: a plurality of busbars; the battery comprises a plurality of groups of battery cells, wherein each group of battery cells is provided with lugs extending towards two ends; the battery comprises a shell, wherein a containing cavity for containing a plurality of groups of battery cells is arranged in the shell, a plurality of heat conduction supporting pieces are arranged at the bottom of the shell towards the battery cells, the bottom of each heat conduction supporting piece is connected with the bottom wall of the shell, and the top of each heat conduction supporting piece is abutted against the battery cells; the two end brackets are connected to two sides of the accommodating cavity, the end brackets and the heat conduction supporting piece are arranged at intervals, and a plurality of guide holes communicated with the accommodating cavity are formed in the end brackets; the bus bar is connected to one side of the end support far away from the accommodating cavity, and the tab extends out of the guide hole and is connected with the bus bar; two protective housing of arranging, every the protective housing of arranging of converging is connected respectively one the end support is kept away from hold a side in chamber, it is a plurality of the busbar is established the end support with between the protective housing of arranging of converging, the protective housing of arranging of converging with the end support is fixed a position through first locating component, the protective housing of arranging of converging with be equipped with the card hole on another of first card foot on one of end support, the card hole with first card foot joint just has many pairs.

According to the battery module provided by the embodiment of the invention, the accommodating cavity for accommodating the plurality of groups of battery cores is arranged in the shell, the plurality of groups of battery cores are placed in the accommodating cavity, and the battery capacity of a single battery module is increased. The casing can play the effect of protection electric core, improves the security of electric core, and is equipped with a plurality of heat conduction support piece between the bottom of casing and the electric core, and heat conduction support piece still can inject the position of electric core when improving electric core radiating rate, guarantees that position is stable between the multiunit electric core, and when using the battery module, can not collide each other between the multiunit electric core. Set up two tip supports in the both sides that hold the chamber, two tip supports with hold the chamber cooperation and have restricted the maximum displacement distance of multiunit electricity core, further improve the positional stability of electricity core in the casing, also make things convenient for the electricity core assembly to hold in the chamber. The lugs extending out of the two ends of the battery core can be quickly connected with the busbar through the guide holes in the end part support, so that the connection efficiency is improved; the busbar protective housing mainly protects the busbar, ensures that external dust or pollutants can not fall on the busbar, and prolongs the service life of the busbar. The protective housing of arranging and tip support are connected through a plurality of first card feet and the cooperation of card hole, improve convenience and assembly speed when battery module assembly is in the same time to make battery module assembly accomplish back stable in structure.

According to the battery module provided by the embodiment of the invention, the bottom of each group of battery cells is provided with a bent battery cell supporting part, two adjacent groups of battery cell supporting parts are spaced, at least one heat conduction supporting part is connected between at least part of adjacent battery cell supporting parts, and the upper parts of the heat conduction supporting parts are respectively abutted against the two groups of battery cells.

Optionally, the heat-conducting support member includes a first support body, a second support body, and a third support body, the first support body and the second support body are connected in a step shape, the cell support portion is connected between the second support body and the first support body, and the bottom of the first support body is connected to the bottom wall; the third supporting body is connected to the upper portion of the second supporting body, and the third supporting body is supported between the two groups of battery cell side faces.

Optionally, the battery module further includes a plurality of buffer foam, and the plurality of buffer foam are respectively disposed between the battery cell and the casing and between a part of the two sets of battery cells; when being equipped with the buffering bubble cotton between two sets of electric core, the cooperation groove has been seted up at heat conduction support piece's top, the cotton embedding of buffering bubble in the cooperation groove.

According to the battery module provided by the embodiment of the invention, the first positioning assembly comprises a positioning plug board arranged on the end part support and a first socket arranged on the busbar protective shell, and the positioning plug board is in plug fit with the first socket; the left and right sides of first socket is equipped with the second card foot, two interval between the second card foot is less than the length of location picture peg, the bottom of location picture peg with the top contact of second card foot.

According to the battery module of one embodiment of the present invention, the end bracket is provided with a plurality of clamping ribs and a plurality of positioning posts protruding toward one side of the busbar, the clamping ribs are abutted against the edge of the busbar, and the positioning posts are in positioning fit with the busbar; be equipped with a plurality ofly on the tip support respectively first card foot, it is a plurality of in the first card foot is followed the joint muscle is outwards extended, and is a plurality of at least two in the first card foot the orientation of first card foot is different, arrange the protective housing on with first card foot corresponds and is equipped with a plurality of card holes.

Optionally, each first clamping pin comprises a first clamping plate extending towards the busbar protective shell and a second clamping plate arranged at the end of the first clamping plate, the plane where the second clamping plate is located is perpendicular to the plane where the first clamping plate is located, the end support is provided with a notch right facing the second clamping plate, and the bottom of the first clamping plate is the top of the notch.

Optionally, the casing includes a top casing, a bottom casing, two side casings and two end casings, one end of each of the two side casings is connected to the bottom casing, the other end of each of the two side casings is connected to the top casing, the top casing abuts against a side surface of the end bracket facing the accommodating cavity, and the end casing is connected to a side of the busbar protective casing away from the end bracket; a plurality of positioning bulges protruding towards the end part support are arranged on the bottom shell, and a positioning groove matched with the positioning bulges is arranged on the end part support; the side shell is provided with a second socket, the end shell is provided with a third socket, the side part of the end part support is provided with a plug-in buckle, and the plug-in buckle is sequentially matched with the second socket and the third socket in a plug-in mode.

Optionally, a portion of the end bracket is raised toward the accommodation cavity and forms a spacing rib, and the guide hole is formed between adjacent spacing ribs; a plurality of first heat dissipation holes are formed in the busbar protective shell, and parts of the first heat dissipation holes are opposite to the guide holes; a plurality of clamping columns are arranged on the busbar protective shell; the end shell is provided with a plurality of second heat dissipation holes, and the clamping columns are clamped in the second heat dissipation holes.

Optionally, the battery module further includes two electrode protection covers, each electrode protection cover is connected to one side of one end support far away from the accommodating cavity, and each bus bar protection shell is provided with an avoidance hole so that the electrode protection covers extend out; the two end supports have the same structure, and the two busbar protective housings have the same structure.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of the housing, end brackets and bussing containment vessel of one embodiment of the present invention.

Fig. 2 is a schematic structural view of an end bracket according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a battery cell disposed in a casing according to an embodiment of the invention.

Fig. 4 is a partial enlarged view of the area i in fig. 3.

Fig. 5 is an exploded view of the end bracket and bussing containment vessel of one embodiment of the present invention.

Fig. 6 is a partial enlarged view of the area ii in fig. 5.

FIG. 7 is a schematic perspective view of an alternate angle of an end bracket according to one embodiment of the present invention.

Fig. 8 is an exploded view of the housing, an end bracket, and a bussing shield of one embodiment of the present invention.

Fig. 9 is a partially enlarged view of region iii in fig. 8.

Fig. 10 is an exploded view of the end bracket, bussing containment vessel and end housing of one embodiment of the present invention.

Fig. 11 is a partially enlarged view of the region iv in fig. 10.

Fig. 12 is a schematic perspective view of a bus protection casing according to an embodiment of the invention.

Fig. 13 is a schematic perspective view of another angle of the bus protection casing according to an embodiment of the present invention.

Reference numerals:

100. a battery module;

1. a bus bar;

2. an electric core;

21. a tab; 22. a cell support part;

3. a housing;

31. an accommodating chamber; 311. opening the mouth;

33. a top shell;

34. a bottom case; 341. positioning the projection;

35. a side casing; 351. a second socket;

36. an end shell; 361. a third socket; 362. a second heat dissipation hole;

4. an end bracket;

41. a guide hole;

42. a first clip; 421. a first clamping plate; 422. a second clamping plate;

43. clamping ribs;

44. a positioning column;

45. a notch;

46. a positioning groove;

47. inserting and buckling;

48. a partition rib;

49. a guide channel;

5. a first positioning assembly;

51. positioning the plug board; 52. a first socket; 53. a second clamping pin;

6. an electrode protection cover; 61. buckling;

7. a busbar protective housing;

71. a clamping hole;

72. a first heat dissipation hole;

73. a clamping column; 731. clamping the column; 732. clamping the strip; 733. a claw;

74. avoiding holes;

75. a first bayonet;

76. mounting holes;

77. a reinforcement column;

78. reinforcing ribs;

8. a thermally conductive support;

81. a first support; 82. a second support; 83. a third support;

9. buffering foam;

10. an FPC board.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length," "thickness," "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present invention.

The battery module 100 according to the embodiment of the present invention will be described with reference to the accompanying drawings.

A battery module 100 according to an embodiment of the present invention, as shown in fig. 1, includes: a plurality of busbar 1, multiunit electricity core 2, casing 3, two tip supports 4 and two busbar protective housing 7.

As shown in fig. 1, each group of cells 2 has tabs 21 protruding toward both ends.

As shown in fig. 1, a containing cavity 31 for containing a plurality of sets of cells 2 is provided in the casing 3, a plurality of heat conducting support members 8 are provided at the bottom of the casing 3 toward the cells 2 (see fig. 3 or fig. 4 for specific structure of the heat conducting support members 8), the bottom wall of the casing 3 is connected to the bottom of the heat conducting support members 8, and the top of the heat conducting support members 8 abuts against the cells 2. Here means, be provided with a plurality of heat conduction support piece 8 between electric core 2 and the casing 3 bottom, a plurality of heat conduction support piece 8's one end is connected on the diapire of casing 3, and a plurality of heat conduction support piece 8's the other end butt electricity core 2.

Referring to fig. 1 and 3, two end brackets 4 are connected to two sides of the accommodating cavity 31, the end brackets 4 and the heat conducting supporting member 8 are arranged at intervals, and as shown in fig. 2, a plurality of guide holes 41 communicated with the accommodating cavity 31 are formed in the end brackets 4.

As shown in fig. 1 and 2, the busbar 1 is connected to the end bracket 4 on the side remote from the receiving space 31, and the tab 21 protrudes from the guide hole 41 and is connected to the busbar 1.

As shown in fig. 1, each busbar protection 7 is connected to a side of one end bracket 4 away from the accommodating chamber 31, and the plurality of busbars 1 are arranged between the end bracket 4 and the busbar protection 7.

As shown in fig. 5, the busbar protective housing 7 and the end bracket 4 are positioned by the first positioning assembly 5, one of the busbar protective housing 7 and the end bracket 4 is provided with the first clamping leg 42, and the other is provided with a clamping hole 71, and the clamping hole 71 is clamped with the first clamping leg 42 and has a plurality of pairs.

As can be seen from the above structure, in the battery module 100 according to the embodiment of the present invention, the tabs 21 extending to both ends are disposed on each group of the battery cells 2, and the tabs 21 are connected to the bus bar 1, so as to implement series connection or parallel connection between the battery cells 2.

The multiple groups of the battery cores 2 are arranged in the accommodating cavity 31, so that the battery capacity of a single battery module 200 is increased, and when the battery module 100 is impacted, the shell 3 collapses to absorb energy and absorbs a part of impact force by using the strength and the rigidity of the shell, so that the damage of the impact force to the battery cores 2 is reduced; the accommodating cavity 31 further provides an installation space for the multiple groups of battery cells 2, limits the maximum moving position of the battery cells 2, prevents the battery cells 2 from being damaged by themselves due to dislocation movement when the battery module 100 is impacted, prolongs the service life of the battery cells 2, and improves the safety of the battery cells 2.

By arranging the plurality of heat conduction supporting pieces 8 between the electric core 2 and the bottom of the shell 3, the plurality of heat conduction supporting pieces 8 can play a role in fixing the electric core 2 and provide a certain damping effect for the plurality of groups of electric cores 2, so that the plurality of groups of electric cores 2 are stable in position in the accommodating cavity 31, when the battery module 100 is used, the plurality of groups of electric cores 2 and the bottom wall of the shell 3 cannot collide with each other, the damage of the collision to the electric cores 2 is reduced, and the service life of the battery module 100 is prolonged; on the other hand, a plurality of heat conduction support members 8 can transmit and dissipate the heat generated by the battery cell 2 during operation to the bottom wall of the shell 3, so that the heat dissipation speed of the battery cell 2 is increased.

Two tip support 4 are connected in the both sides that hold chamber 31, have multiunit electric core 2 because of holding and holding in the chamber 31, and the effect of restriction electric core 2 position can be played in the cooperation of two tip support 4 for electric core 2 is holding chamber 31 internal stability of position, also conveniently assembles electric core 2 and holding in the chamber 31.

Through setting up tip support 4 and 8 intervals of heat conduction support piece, because of two tip supports 4 set up in the both sides that hold chamber 31 and contact with electric core 2, if all set up two tip supports 4 to contact with heat conduction support piece 8, then heat conduction support piece 8 is when dispelling the heat to electric core 2, the heat can be transmitted to tip support 4 on, tip support 4 can continue to transmit the heat to electric core 2 on, influence the radiating rate of electric core 2, consequently, set up tip support 4 and 8 intervals of heat conduction support piece, can promote electric core 2 radiating rate.

Through arranging the plurality of guide holes 41 communicated with the accommodating cavity 31 on the end support 4, the bus bar 1 is connected to one side of the end support 4 far away from the accommodating cavity 31, and the plurality of guide holes 41 can play a role of avoiding the tabs 21 on one hand, so that the tabs 21 can smoothly pass through the end support 4 and are connected to the bus bar 1; on the other hand, the guide holes 41 can play a role in guiding, the tab 21 is connected to the busbar 1 through the guide holes 41, accurate and quick connection between the tab 21 and the busbar 1 is achieved, and assembly efficiency is improved.

The busbar protective housing 7 is connected to the end support 4, the busbar 1 is arranged between the end support 4 and the busbar protective housing 7, the busbar 1 arranged on the end support 4 can be protected by the busbar protective housing 7, the busbar 1 is guaranteed not to be stabbed by external sharp objects, external foreign objects are effectively prevented from falling on the busbar 1 to cause pollution, and the service life of the busbar 1 is prolonged.

The bus bar protective housing 7 and the end bracket 4 are positioned by the first positioning assembly 5. First locating component 5 can play the guide effect at the in-process of arranging protective housing 7 and the assembly of tip support 4 for battery module 100 is quick and the location is accurate at the in-process of connecting, and after battery module 100 assembly was accomplished, first locating component 5 still can play the effect of butt arranging protective housing 7 and tip support 4, makes row protective housing 7 and tip support 4 relative position stable.

The busbar protective shell 7 is connected with the end support 4 in a matched mode through a plurality of pairs of first clamping feet 42 and clamping holes 71, on the one hand, the first clamping feet 42 and the clamping holes 71 can play a role in guiding and positioning in the connection process of the busbar protective shell 7 and the end support 4, and the assembly convenience of the busbar protective shell 7 and the end support 4 is improved; in a second aspect, after the assembly of the busbar protective housing 7 and the end bracket 4 is completed, the first clamping pins 42 and the clamping holes 71 form abutting fit, so that the connection quality is improved, and the battery module 100 is ensured not to be easily loosened in the moving process; in a third aspect, the busbar protective shell 7 and the end bracket 4 are detachably connected through the first clamping pin 42 and the clamping hole 71, and when other components connected between the busbar protective shell 7 and the end bracket 4 need to be maintained or replaced, the battery module 100 is convenient to assemble and disassemble, so that the battery module 100 is more convenient and faster to maintain.

It can be understood that, for prior art, battery module 100 of this application is provided with a plurality of heat conduction support piece 8 between electricity core 2 and casing 3 bottom, improves the radiating rate of electricity core 2, and the radiating effect is good. Can realize utmost point ear 21 and busbar 1's high-speed joint, through first locating component 5, first card foot 42 and card hole 71 cooperation connection, install and remove convenience and stable in structure at the in-process of assembling of busbar protective housing 7 and tip support 4.

Optionally, the heat conducting support member 8 may be a heat conducting pad or a heat conducting glue, so that the heat conducting support member 8 not only has certain flexibility, excellent insulation, compressibility, and natural surface viscosity, but also can fill a gap to complete heat transfer between a heating portion and a heat dissipating portion, and also has the effects of insulation, shock absorption, and the like.

Alternatively, as shown in fig. 1, both ends of the housing 3 are respectively formed with open openings 311 communicating with the accommodation chamber 31. The uncovered 311 is convenient to install electric core to holding in the chamber 31, and uncovered 311 can dodge the utmost point ear 21 that the electric core stretches out outward for utmost point ear 21 accessible is uncovered 311 and is drawn forth to the guiding hole 41 of tip support 4 in, and utmost point ear 21 that draws forth from guiding hole 41 then is connected with busbar 1 electricity, forms the series connection or parallelly connected between the multiunit electricity core 2.

Optionally, the end supports 4 are detachably connected to a plurality of surfaces of the housing 3, the detachable connection enables the housing 3 and the two end supports 4 to be formed into three split structures, the plurality of groups of battery cells 2 are placed in the accommodating cavity 31 and installed in place, and then the two end supports 4 are connected to two sides of the accommodating cavity 31, so that the production and manufacturing simplicity and assembly convenience of the battery module 100 are greatly improved.

Alternatively, as shown in fig. 1 and 2 in conjunction, a portion of the end bracket 4 is raised toward the accommodation chamber 31 and forms a spacing rib 48, and a guide hole 41 is formed between adjacent spacing ribs 48. The structural strength of the spacer ribs 48 can increase the end support 4, and when the battery module 100 is impacted, the spacer ribs 48 collapse to absorb energy and absorb part of the impact force, so that the impact force acting on the battery cell 2 is reduced, the damage of the impact force to the battery cell 2 is reduced, and the service life of the battery cell 2 is prolonged.

Alternatively, as shown in fig. 2, one guide passage 49 is formed between adjacent partition ribs 48, one end of each guide passage 49 communicates with the accommodation chamber 31, the other end of each guide passage 49 connects with the guide hole 41, and the guide hole 41 is provided through the thickness direction of the end bracket 4. Through the cooperation of guide passage 49 and guiding hole 41, when utmost point ear 21 needs to be connected with busbar 1, guide passage 22 provides the direction to utmost point ear 210 for utmost point ear 210 stretches out from guiding hole 23 fast, thereby utmost point ear 21 accessible guide passage 49 stretches out guiding hole 41 fast and is connected with busbar 1, realizes the high-speed joint between utmost point ear 21 and the busbar 1, improves assembly efficiency.

Alternatively, at least a portion of the cross-section of the spacer ribs 48 may be tapered toward the receiving cavity 31, and at least a portion of the cross-section of the guide channels 49 may be tapered away from the receiving cavity 31. Since a guide passage 49 is formed between two adjacent partition ribs 48, when the partition ribs 48 are arranged such that at least a part of the cross section thereof is gradually reduced toward the direction approaching the accommodating chamber 31, accordingly, at least a portion of the cross-section of the guide passage 49 gradually increases toward the receiving chamber 31, when the tab 21 extends into the guide hole 41 through the guide passage 49, the guide passage 49 with a larger cross section near the receiving cavity 31 can ensure that the tab 21 can quickly enter the guide passage 49, and since a part of the cross-section of the guide passage 49 is gradually reduced toward a direction away from the accommodating chamber 31, so that the side surfaces of the guide passage 49 are formed as inclined surfaces, the tab 21 is, during the movement into the guide passage 49 toward the guide hole 41, the side wall of the guide channel 49 can also play a role in guiding, so that the tab 21 can rapidly and accurately pass through the guide hole 41, and the connection efficiency of the tab 21 and the bus bar 1 is improved.

Alternatively, both end brackets 4 are made of plastic. That is, two tip supports 4 all form into the plastic support, and two plastic support lid respectively are established in uncovered 311 department for tip support 4 self has better chemical stability and impact resistance, and plays insulating effect, promotes the security between electric core 2, busbar 1 and the casing 3, and is lighter because of the material of plastics, and the light-weighted of battery module 100 can be realized through tip support 4 that plastics were made.

Alternatively, the material of the housing 3 may be one of cast steel, glass fiber reinforced plastic, or aluminum alloy materials. Make casing 3 have higher intensity and rigidity, when battery module 100 takes place the striking, furthest's protection electric core 2 does not receive the damage, prolongs electric core 2's life and improves electric core 2's security.

Advantageously, the surface of the housing 3 is subjected to corrosion protection treatment, so that the housing 3 still has a good corrosion protection effect under a long-term high-temperature condition, the service life of the housing 3 is prolonged, and the use cost of the battery module 100 is saved.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In some embodiments of the present invention, as shown in fig. 3 and 4, a bent cell supporting portion 22 is disposed at a bottom of each group of cells 2, two adjacent groups of cell supporting portions 22 are spaced apart, a heat conducting supporting member 8 is connected between at least some adjacent cell supporting portions 22, and an upper portion of each heat conducting supporting member 8 abuts against two groups of cells 2, respectively. By arranging the cell supporting parts 22, the contact area between the cells 2 and the heat-conducting supporting parts 8 can be increased, and one heat-conducting supporting part 8 is arranged between the adjacent cell supporting parts 22, so that on one hand, the positions of the two adjacent groups of cells 2 can be ensured to be stable; on the other hand, a heat conduction support member 8 can be simultaneously with two sets of electric cores 2 on heat transfer to casing 3 that the during operation produced, for example in specific example, two heat conduction support member 8 support three electric cores respectively, have still reduced heat conduction support member 8's use quantity when improving electric core 2 radiating rate, practice thrift manufacturing cost and realize battery module 100's lightweight. In addition, partial battery cell can be supported through two heat conduction support members 8 respectively, and when two heat conduction support members 8 are arranged at intervals in the width direction of the casing 3, a certain heat dissipation space is formed between the battery cell and the two heat conduction support members 8, so that the heat dissipation performance of the battery module 100 is improved.

Optionally, each group of cells 2 includes a plurality of pouch batteries, and each pouch battery has a cell support portion 22 extending toward the bottom wall. With the area of contact who increases laminate polymer battery and heat conduction support piece 8 for laminate polymer battery is stable in position in holding chamber 31.

Optionally, as shown in fig. 4, the heat conducting support 8 includes a first support 81, a second support 82, and a third support 83, the first support 81 and the second support 82 are connected in a step shape, a cell support portion 22 is connected between the second support 82 and the first support 81, and a bottom wall is connected to a bottom of the first support 81. The second support body 82 and the first support body 81 are used for limiting the position of the battery cell support portion 22, the battery cell after being limited is not prone to shaking, and the position of the battery cell support portion 22 in the casing 3 is ensured to be stable, that is, the position of the soft package battery in the accommodating cavity 31 is stable.

Alternatively, as shown in fig. 4, a third support body 83 is connected to the upper portion of the second support body 82, and the third support body 83 is supported between the two sets of battery cells 2. Increase the area of contact between heat conduction support piece 8 and the laminate polymer battery through third supporter 83, further inject laminate polymer battery's position, ensure that multiunit electricity core 2 stable in position in casing 3.

In the description of the invention, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features for distinguishing between the described features, whether they are sequential or not.

Optionally, heat conduction support member 8 extends along the length direction of casing 3, so that heat conduction support member 8 can provide support for the structure of the whole length direction of electric core, and heat dissipation performance of the whole electric core is improved while stable support of electric core by heat conduction support member 8 is ensured.

Optionally, as shown in fig. 3, the battery module 100 further includes a plurality of buffer foam 9, and the plurality of buffer foam 9 are respectively disposed between the battery cells 2 and the casing 3, and between part of the two sets of battery cells 2. The cotton 9 of buffering bubble mainly plays the effect of buffering and inhaling at the in-process that battery module 100 initial stage equipment rocked with battery module 100, also provides certain shock attenuation effect for multiunit electricity core 2, effectively prevents jolting of battery module 100 vehicle-mounted driving in-process, prevents to take place the dislocation between multiunit electricity core 2 and causes the fish tail, and buffering bubble cotton 9 still can use the bulging force of later stage to electricity core 2 production at battery module 100 and absorb.

Optionally, when the buffering foam 9 is disposed between the two sets of battery cells 2, a matching groove (not shown in the figure) is formed in the top of the heat-conducting support member 8, and the buffering foam 9 is embedded into the matching groove. The cooperation groove can play the cotton 9 effect of fixed buffering bubble, will cushion during the cotton 9 embedding cooperation grooves of bubble, and the cotton 9 of in-process buffering bubble of 100 transportation or rocking of battery module can not produce and rock.

In some embodiments of the present invention, as shown in fig. 5, the first positioning assembly 5 includes a positioning insertion plate 51 disposed on the end bracket 4 and a first insertion opening 52 disposed on the busbar protection casing 7, and the positioning insertion plate 51 is inserted into and matched with the first insertion opening 52. Before end support 4 and busbar protective housing 7 are connected, the position that the staff accessible location picture peg 51 need install of busbar protective housing 7 is confirmed fast, reduces the assembly degree of difficulty.

Optionally, the length of the positioning insert plate 51 is equal to the length of the first socket 52. In the process of connecting the end bracket 4 and the busbar protection casing 7, the first socket 52 can move along the extending direction of the positioning insertion plate 51, and the side wall of the positioning insertion plate 51 is abutted and matched with the side wall of the first socket 52 to play a role in guiding and positioning, so that the relative position of the assembled end bracket 4 and the assembled busbar protection casing 7 is accurate, and the assembling convenience of the end bracket 4 and the assembled busbar protection casing 7 is improved.

Optionally, as shown in fig. 5, the left and right sides of the first inserting hole 52 are provided with second clamping feet 53, the distance between the two second clamping feet 53 is smaller than the length of the positioning inserting plate 51, and the bottom of the positioning inserting plate 51 contacts with the top of the second clamping feet 53. During the assembly of the end support 4 and the busbar protective housing 7, the bottom of the part of the positioning insertion plate 51 far away from the end support 4 contacts the top of the second clamping leg 53, then the busbar protective housing 7 is pushed along the extending direction of the positioning insertion plate 51, the busbar protective housing 7 moves towards the end support 4, and during the movement of the busbar protective housing 7, the positioning insertion plate 51 and the second clamping leg 53 are matched to play a role in guiding, so that the busbar protective housing 7 moves along a given route and does not deviate during the movement, and the assembly accuracy of the end support 4 and the busbar protective housing 7 is improved; after the end support 4 and the busbar protective housing 7 are assembled, the positioning insertion plate 51 is inserted into the first insertion opening 52 and abuts against the second insertion opening 53, so that the second insertion opening 53 and the positioning insertion plate 51 form abutting fit, the connection quality is improved, the battery module 100 is ensured to be not easy to loosen in the moving process, and the structural stability of the battery module 100 is improved.

Alternatively, the end bracket 4 and the positioning insert plate 51 are manufactured in an integral injection molding process. The end bracket 4 and the positioning insertion plate 51 form an integral structure, so that the processing is convenient, and the production efficiency is improved.

Optionally, the bus bar protective housing 7 and the second clamping leg 53 are manufactured by an integral injection molding process. The beneficial effects are the same as those of the end bracket 4 and the positioning insertion plate 51 which are manufactured by adopting an integral injection molding process, and are not described herein again.

In some embodiments of the present invention, as shown in fig. 5 and 7, a plurality of snap ribs 43 are protruded from the end bracket 4 toward one side of the bus bar 1, and the snap ribs 43 abut against the edge of the bus bar 1. The plurality of clamping ribs 43 can further improve the structural strength of the end bracket 4, and can collapse and absorb energy when the battery module 100 is impacted, so that the damage of impact force to the battery core 2 is reduced; on the other hand, joint muscle 43 and the edge butt of busbar 1, joint muscle 43 has restricted busbar 1's the biggest shift position, and busbar 1 dislocation removal and the utmost point ear 21 that drives connection on electric core 2 move when preventing that battery module 100 from receiving the striking leads to utmost point ear 21 fracture damage, prolongs electric core 2's life to improve electric core 2's security.

Alternatively, as shown in fig. 7 in combination with fig. 5, a plurality of positioning posts 44 are protruded from the end bracket 4 toward one side of the busbar 1, and the positioning posts 44 are in positioning fit with the busbar 1. Before assembling the busbar 1, a worker can determine the installation position of the busbar 1 according to the position of the positioning column 44, so that the assembly difficulty is reduced, and the assembly efficiency is improved; during assembly, the positioning posts 44 serve as guides and positioning for the accurate positioning of the busbar 1 attached to the end bracket 4.

Correspondingly, the busbar 1 is provided with a plurality of positioning holes (not shown) matched with the positioning posts 44. The outer surface of the positioning column 44 contacts with the inner wall of the positioning hole, and is used for limiting the position of the busbar 1, so that the busbar 1 is stably connected to the end support 4, and the busbar 1 is prevented from moving in a dislocation manner when the battery module 100 is impacted, and the tab 21 connected to the battery cell 2 is driven to move.

Alternatively, as shown in fig. 7, a plurality of first locking legs 42 are respectively disposed on the end brackets 4, and one first locking leg 42 of the plurality of first locking legs 42 extends outward from the locking rib 43. The part of the end bracket 4 provided with the clamping rib 43 has high structural strength, and the first clamping foot 42 extending outwards is arranged from the part and is not easy to break after being matched with the clamping hole 71. In addition, since the clamping rib 43 has a certain protruding height relative to the surface of the end bracket 4 on the side away from the accommodating cavity 31, the first clamping leg 42 provided at the clamping rib 43 can save part of the material of the first clamping leg 43.

Optionally, at least two of the first fastening legs 42 in the plurality of first fastening legs 42 have different orientations, and a plurality of fastening holes 71 are formed in the bus protection casing 7 corresponding to the first fastening legs 42 (see fig. 6 for specific structures of the fastening holes 71). First card foot 42 and card hole 71 cooperation make tip support 4 and the formation of the protective housing 7 of arranging that converges to dismantle the connection, further promote the assembly convenience of tip support 4 and the protective housing 7 of arranging that converges, and form the butt cooperation with first card foot 42 joint in card hole 71, improve the connection quality.

Optionally, one of the first locking legs 42 of the plurality of first locking legs 42 is located at the upper portion of the end bracket 4, another one of the first locking legs 42 of the plurality of first locking legs 42 is located at the lower portion of the end bracket 4, and the locking direction of the first locking leg 42 located at the upper portion of the end bracket 4 is different from that of the first locking leg 42 located at the lower portion of the end bracket 4. Correspondingly, the top and the bottom of the busbar protective housing 7 are provided with a plurality of clamping holes 71 matched with the first clamping pins 42, and the first clamping pins 42 and the clamping holes 71 at a plurality of different positions are matched, so that the connecting force of the busbar protective housing 7 and the end support 4 in different directions is effectively improved, and the connecting quality of the end support 4 and the busbar protective housing 7 is improved.

Optionally, as shown in fig. 6, each first locking pin 42 includes a first locking plate 421 extending toward the busbar protection casing 7 and a second locking plate 422 provided at an end of the first locking plate 421, a plane of the second locking plate 422 is perpendicular to a plane of the first locking plate 421, the end bracket 4 is provided with a notch 45 opposite to the second locking plate 422, and a bottom of the first locking plate 421 is a top of the notch 45. The first clamping plate 421 extends toward the direction of the busbar protection case 7, and in the process of assembling the first clamping plate 421 and the second clamping plate 422 into the clamping hole 71, the first clamping plate 421 with a certain length can enable the second clamping plate 422 to extend into the clamping hole 71, so that a certain assembling space is formed between the end bracket 4 and the busbar protection case 7 to accommodate related structures such as the busbar 1. The gap 45 allows the first engaging portion 42 to have a certain elastic deformation margin, so that the first engaging portion 42 can be engaged with the engaging hole 71.

Optionally, the second catch plate 422 is formed as an inclined surface toward one side of the busbar protection case 7. The second clamping plate 422 is conveniently clamped in the clamping hole 71, the inclined plane has a certain guiding effect, the assembly difficulty can be greatly reduced, and the assembly efficiency is improved. During assembly, the first clamping pins 42 are aligned with the clamping holes 71, the end support 4 and the busbar protection casing 7 are close to each other along the extending direction of the first clamping plates 421, and the first clamping pins 42 are clamped and matched with the clamping holes 71, so that the end support 4 and the busbar protection casing 7 can form an integral structure.

According to the structure, the end support 4 and the busbar protective shell 7 are connected in a matched mode through the positioning insertion plate 51 and the second clamping pin 53, the first clamping pin 42 and the clamping hole 71, the detachable connection of the end support 4 and the busbar protective shell 7 is achieved, and the connection strength is improved while the assembly efficiency is improved.

In some embodiments of the present invention, as shown in fig. 8, housing 3 includes a top shell 33, a bottom shell 34, two side shells 35, and two end shells 36, one end of each of two side shells 35 is connected to bottom shell 34, the other end of each of two side shells 35 is connected to top shell 33, top shell 33 abuts against one side of end bracket 4 facing accommodating cavity 31, and end shell 36 is connected to one side of bus bar protecting shell 7 away from end bracket 4. The accommodating cavity 31 with two open ends is formed in the housing 3 through the cooperation of the two side shells 35, the bottom shell 34 and the top shell 33, during the assembly process of the battery module 100, a plurality of groups of battery cells 2 can be firstly placed in the accommodating cavity 31 formed by enclosing the two side shells 35, the bottom shell 34 and the top shell 33, then the two end brackets 4 are respectively connected with two ends of the top shell 33, after the two end shells 36 are connected in place, the two end shells 36 are respectively connected with the two end brackets 4, the production and manufacturing simplicity and the assembly convenience of the housing 3 are greatly improved, and as one end shell 36 is connected with one side of the busbar protective shell 7 and the other end shell 36 is connected with one side of the other busbar protective shell 7, the two end shells 36 can play a role in protecting the busbar protective shell 7 and the end brackets 4, the service lives of the busbar protective shell 7 and the end brackets 4 are prolonged, and the use cost of the battery module 100 is reduced, when the battery module 100 is impacted, the two end shells 36 can also reduce the damage of the impact force to the multiple groups of battery cells 2 by using the strength of the two end shells.

Optionally, a removable connection is formed between two side shells 35, bottom shell 34, and top shell 33. The detachable connection may improve the ease of manufacturing and assembly of the housing 3. The detachable connection can be a bolt and a nut connection, can also be a riveting connection, can also be a clamping connection of a buckle and a clamping groove, and can be selected according to actual needs.

Alternatively, as shown in fig. 9, bottom shell 34 is provided with a plurality of positioning protrusions 341 protruding toward end bracket 4, and end bracket 4 is provided with positioning grooves 46 matching with positioning protrusions 341. Positioning protrusions 341 and positioning grooves 46 cooperate to define end bracket 4 on bottom case 34 and allow end bracket 4 and bottom case 34 to be detachably coupled, thereby improving the ease of manufacturing and assembly of battery module 100 while improving the coupling strength between end bracket 4 and bottom case 34.

Alternatively, as shown in fig. 9, a second socket 351 is provided on the side shell 35, a third socket 361 is provided on the end shell 36, a latch 47 is provided on the side of the end bracket 4, and the latch 47 is in plug-in fit with the second socket 351 and the third socket 361 in turn. The buckles 47, the second sockets 351 and the third sockets 361 are matched to form clamping fit among the end bracket 4, the side shell 35 and the end shell 36, and the side shell 35, the end shell 36 and the end bracket 4 are detachably connected, so that the assembling convenience and the connection quality of the battery module 100 are improved, and the structure of the battery module 100 is stable.

Optionally, as shown in fig. 2 and 10, a plurality of first heat dissipating holes 72 are formed in the busbar protective casing 7, and portions of the first heat dissipating holes 72 face the guide holes 41. By arranging the plurality of first heat dissipation holes 72 on the busbar protective shell 7 and arranging the parts of the first heat dissipation holes 72 right opposite to the guide holes 41, the plurality of first heat dissipation holes 72 can timely diffuse heat generated by the plurality of groups of battery cells 2 and the busbar 1 in the working process, so that thermal runaway of the soft package battery caused by heat accumulation is avoided, and the safety performance of the battery module 100 is improved; the plurality of first heat dissipation holes 72 can also reduce the weight of the busbar protection housing 7 in the second aspect, thereby achieving the light weight of the busbar protection housing 7 and further achieving the light weight of the battery module 100.

Optionally, as shown in fig. 10, a plurality of second heat dissipation holes 362 are formed on the end housing 36. On one hand, the second heat dissipation holes 362 can timely dissipate heat conducted out by the first heat dissipation holes 72, so that thermal runaway of the soft package battery caused by heat accumulation is avoided, and the safety performance of the battery module 100 is improved; on the other hand, the second heat dissipation holes 362 can also reduce the weight of the end housing 36, thereby reducing the weight of the end housing 36.

Optionally, the flow area of the second louvers 362 is greater than the flow area of the first louvers 72. The second heat dissipation holes 362 can dissipate the heat conducted from the first heat dissipation holes 72, so as to increase the heat dissipation speed of the second heat dissipation holes 362, reduce the number of the second heat dissipation holes 362, and increase the structural strength of the end housing 36.

Optionally, as shown in fig. 12, a plurality of fastening posts 73 are disposed on the busbar protection casing 7, a plurality of second heat dissipating holes 362 are disposed on the end casing 36 (see fig. 10 for a specific structure of the second heat dissipating holes 362), and a portion of the second heat dissipating holes 362 is fastened by the fastening posts 73. With the joint post 73 joint form the butt cooperation in second louvre 362, improve the connection quality, guarantee that the relative position relation of arranging protective housing 7 in casing 3 is stable, at the in-process that the vehicle was gone or is rocked, arrange protective housing 7 and can not rock for casing 3, improve battery module 100's structural stability.

Optionally, as shown in fig. 12 and fig. 13, the bus protection shell 7 is further provided with an installation hole 76, the fastening column 73 includes a fastening column 731, a fastening strip 732 and a claw 733, two side walls of the installation hole 76 are provided with the fastening strip 732, one side of the fastening strip 732 facing the end shell 36 (the specific structure of the end shell 36 can be seen in fig. 10) is provided with the claw 733, and the other side of the fastening strip 732 is provided with the fastening column 731. The clamping column 731 can stably connect the clamping column 73 to the busbar protective housing 7, the busbar protective housing 7 and the end housing 36 can be detachably connected through the clamping jaw 733, the busbar protective housing 7 can be stable relative to the position of the housing 3 while being convenient to mount and dismount, the busbar protective housing 7 cannot shake relative to a vehicle in the driving or shaking process of the vehicle, and therefore the stability of the battery module 100 is improved.

Alternatively, as shown in fig. 12, the mounting holes 76 include two, and the two mounting holes 76 are arranged in an axisymmetric manner with respect to the center line of the protective manifold 7. Claws 733 are uniformly arranged in each mounting hole 76 in the direction towards the end shell 36, the connection between the busbar protective shell 7 and the end shell 36 is realized through the two claws 733, the busbar protective shell 7 is stably connected in the shell 3, and the structural stability of the battery module 100 is further improved.

Optionally, as shown in fig. 13, a plurality of reinforcing columns 77 and reinforcing ribs 78 are further disposed on a side of the busbar protection casing 7 away from the end casing 36 (the specific structure of the end casing 36 can be seen in fig. 10), and one end of each reinforcing rib 78 is connected to the reinforcing column 77, and the other end is connected to the clamping column 731. The reinforcing ribs 78 and the reinforcing posts 77 cooperate to improve the structural stability of the snap posts 731 so that the snap posts 73 are stably connected in the mounting holes 76, thereby functioning to connect the bus bar protective housing 7 and the end housing 36.

In some embodiments of the present invention, the battery module 100 further includes two electrode protection covers 6, each electrode protection cover 6 (the specific structure of the electrode protection cover 6 can be seen in fig. 10) is connected to a side of one end bracket 4 away from the accommodating cavity 31, and each busbar protection shell 7 is provided with an avoiding hole 74 to allow the electrode protection cover 6 to extend out. The avoidance holes 74 leave an avoidance space for the arrangement of the electrode protection covers 6, so that the top of the electrode can be located below the electrode protection covers 6 after the electrode extends out of the busbar protection shell 7, the electrode protection covers 6 are used for protecting the safety of the electrode, the electrode is prevented from being impacted, corroded and the like, the service life of the battery module 100 is prolonged, and the safety of the battery module 100 is improved.

Note that, the two electrode protection covers 6 of the present application are provided on the two end brackets 4, respectively. Make the subassembly structure that sets up on two tip supports 4 the same, in the in-process of production tip support 4 only need develop the same mould can, reduce battery module 100's manufacturing cost.

Optionally, as shown in fig. 11, each electrode protection cover 6 is provided with a plurality of buckles 61, the busbar protection shell 7 is provided with a plurality of first bayonets 75 around the avoidance hole 74, and the buckles 61 are in snap fit with the first bayonets 75. Buckle 61 and first bayonet socket 75 can realize quick location at the in-process that electrode protective cover 6 and the protective housing 7 of arranging connect, promote battery module 100's assembly convenience, and accomplish the back at electrode protective cover 6 and the protective housing 7 assembly of arranging, buckle 61 and first bayonet socket 75 form the butt cooperation, improve connection quality, ensure that battery module 100 is difficult for the pine to take off at the removal in-process.

Alternatively, the electrode protection cap 6 and the end bracket 4 are manufactured using an integral injection molding process. On one hand, the electrode protection cover 6 and the end support 4 do not need to be subjected to machining such as welding, polishing and grinding in the early stage in the assembly process of the battery module 100, so that the assembly process is effectively simplified, and the production efficiency of the battery module 100 is improved; on the other hand, the electrode protection cover 6 is arranged on the end support 4, and after the electrode protection cover 6 is connected with the busbar protection shell 7, the connection between the end support 4 and the busbar protection shell 7 can be realized, and the assembly efficiency is improved.

Optionally, as shown in fig. 1 and 10, the battery module 100 further includes an FPC board 10, the FPC board 10 is connected to one side of the end support 4 away from the accommodating cavity 31, an avoiding space (not shown) is provided on the bus protection casing 7, the avoiding space is located at one side of the avoiding hole 74, a partial structure of the FPC board 10 extends into the avoiding space, and the FPC boards 10 are respectively connected to the bus bars 1 on the end support 4. The avoidance space is convenient for arrangement of the FPC board 10, the FPC board 10 can be connected with an external component through the avoidance space, and the busbars 1, the flat cables and the like are connected in the detection circuit on the FPC board 10, so that the output voltage and the current of each busbar 1 can be detected, and the working state of the whole battery module 100 can be monitored conveniently.

Alternatively, the two end brackets 4 are identical in structure and the two bus bars 7 are identical in structure. In the process of battery module 100 production, only need produce one make the mould of tip support 4 and produce one make converge arrange the mould of protective housing 7 can, practice thrift manufacturing cost, and improve battery module 100's production efficiency, and at the in-process of later stage battery module 100 assembly, for tip support 4 or the protective housing 7 of arranging of meeting different structures, any tip support 4 or the protective housing 7 of arranging of converging all can set up on the arbitrary one side that holds chamber 31 in this application, reduce the assembly degree of difficulty, and improve assembly efficiency.

The specific structure of the battery module 100 according to the exemplary embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be all embodiments obtained by combining the foregoing technical solutions, and are not limited to the following specific embodiments, which fall within the scope of the present invention.

Example 1

A battery module 100, as shown in fig. 1, includes: a plurality of busbar 1, multiunit electricity core 2, casing 3, two tip supports 4 and two busbar protective housing 7.

As shown in fig. 1, each group of cells 2 has tabs 21 protruding toward both ends.

As shown in fig. 1, a containing cavity 31 for containing a plurality of sets of cells 2 is provided in the casing 3, a plurality of heat conducting support members 8 are provided at the bottom of the casing 3 toward the cells 2 (see fig. 3 for specific structure of the heat conducting support members 8), the bottom wall of the casing 3 is connected to the bottom of the heat conducting support members 8, and the top of the heat conducting support members 8 abuts against the cells 2.

Two end supports 4 are connected to two sides of the accommodating cavity 31, the end supports 4 and the heat conducting support member 8 are arranged at intervals, and a plurality of guide holes 41 communicated with the accommodating cavity 31 are formed in the end supports 4 (the specific structure of the guide holes 41 can be seen in fig. 2).

As shown in fig. 1, the busbar 1 is connected to the end bracket 4 on the side remote from the receiving space 31, and the tab 21 protrudes from the guide hole 41 and is connected to the busbar 1.

As shown in fig. 1, each busbar protective casing 7 is connected to a side of one end bracket 4 away from the accommodating chamber 31, and the plurality of busbars 1 are arranged between the end bracket 4 and the busbar protective casing 7.

As shown in fig. 5, the busbar protective housing 7 and the end bracket 4 are positioned by the first positioning assembly 5, one of the busbar protective housing 7 and the end bracket 4 is provided with the first clamping pin 42, and the other is provided with the clamping hole 71, and the clamping hole 71 is clamped with the first clamping pin 42 and has four pairs.

Example 2

The utility model provides a battery module 100, on embodiment 1's basis, as shown in fig. 3 and fig. 4, the bottom of every group electricity core 2 all is equipped with the electric core supporting part 22 of buckling, and adjacent two sets of electric core supporting parts 22 are spaced apart, is connected with a heat conduction support piece 8 between the partly adjacent electric core supporting part 22, and heat conduction support piece 8's upper portion is two sets of electric cores 2 of butt respectively.

As shown in fig. 4, the heat-conducting supporting member 8 includes a first supporting body 81, a second supporting body 82 and a third supporting body 83, the first supporting body 81 and the second supporting body 82 are connected in a step shape, a cell supporting portion 22 is connected between the second supporting body 82 and the first supporting body 81, and the bottom of the first supporting body 81 is connected with the bottom wall; the third support body 83 is connected to the upper portion of the second support body 82, and the third support body 83 is supported between the two sets of battery cells 2.

Example 3

In embodiment 1, as shown in fig. 7, a plurality of clamping ribs 43 and a plurality of positioning posts 44 are protruded from one side of an end bracket 4 facing a bus bar 1, the clamping ribs 43 abut against the edge of the bus bar 1, and the positioning posts 44 are in positioning fit with the bus bar 1.

Four first clamping legs 42 are respectively arranged on the end portion support 4, one first clamping leg 42 of the four first clamping legs 42 extends outwards from the clamping rib 43, two first clamping legs 42 of the four first clamping legs 42 are different in orientation, and as shown in fig. 5, four clamping holes 71 are correspondingly arranged on the bus protection shell 7 and corresponding to the first clamping legs 42.

As shown in fig. 5, the first positioning assembly 5 includes a positioning insertion plate 51 disposed on the end bracket 4 and a first insertion opening 52 disposed on the busbar protection casing 7, and the positioning insertion plate 51 is inserted into and engaged with the first insertion opening 52.

The left side and the right side of the first inserting hole 52 are provided with second clamping feet 53, the distance between the two second clamping feet 53 is smaller than the length of the positioning inserting plate 51, and the bottom of the positioning inserting plate 51 is contacted with the top of the second clamping feet 53.

Example 4

In embodiment 3, as shown in fig. 8, a battery module 100 includes a housing 3 including a top case 33, a bottom case 34, two side cases 35, and two end cases 36, wherein one ends of the two side cases 35 are respectively connected to the bottom case 34, the other ends of the two side cases 35 are respectively connected to the top case 33, the top case 33 abuts against one side surface of an end bracket 4 facing a containing cavity 31, and the end cases 36 are connected to a side of a bus protection case 7 away from the end bracket 4.

As shown in fig. 9, bottom housing 34 is provided with four positioning protrusions 341 protruding toward end bracket 4, and end bracket 4 is provided with positioning grooves 46 for engaging with positioning protrusions 341.

As shown in fig. 9, a second socket 351 is provided on the side shell 35, a third socket 361 is provided on the end shell 36, a latch 47 is provided on the side of the end bracket 4, and the latch 47 is inserted into and fitted with the second socket 351 and the third socket 361 in sequence.

As shown in fig. 10, a plurality of first heat dissipation holes 72 are formed in the busbar protective casing 7, and portions of the first heat dissipation holes 72 face the guide holes 41 (see fig. 2 for specific structures of the guide holes 41).

As shown in fig. 12, the bus bar protective case 7 is provided with a plurality of snap posts 73.

As shown in fig. 10, the end housing 36 is provided with a plurality of second heat dissipation holes 362, and the snap posts 73 are snapped in part of the second heat dissipation holes 362.

Example 5

In a battery module 100, based on embodiment 4, the battery module 100 further includes two electrode protection covers 6, each electrode protection cover 6 (the specific structure of the electrode protection cover 6 can be seen in fig. 10) is connected to one side of one end bracket 4 away from the accommodating cavity 31, and each busbar protection shell 7 is provided with an avoiding hole 74 so that the electrode protection cover 6 extends out.

The two end supports 4 have the same structure, and the two busbar protective housings 7 have the same structure.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Other configurations of the battery module 100 according to the embodiment of the present invention, such as how the plurality of battery cells 2 are connected in series or in parallel through the bus bar 1, are known to those skilled in the art, and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery module, comprising:

a plurality of busbars;

the battery comprises a plurality of groups of battery cells, wherein each group of battery cells is provided with lugs extending towards two ends;

the battery comprises a shell, wherein a containing cavity for containing a plurality of groups of battery cells is arranged in the shell, a plurality of heat conduction supporting pieces are arranged at the bottom of the shell towards the battery cells, the bottom of each heat conduction supporting piece is connected with the bottom wall of the shell, and the top of each heat conduction supporting piece is abutted against the battery cells;

the two end brackets are connected to two sides of the accommodating cavity, the end brackets and the heat conduction supporting piece are arranged at intervals, and a plurality of guide holes communicated with the accommodating cavity are formed in the end brackets; the bus bar is connected to one side of the end support far away from the accommodating cavity, and the tab extends out of the guide hole and is connected with the bus bar;

two protective housing of arranging, every the protective housing of arranging of converging is connected respectively one the end support is kept away from hold a side in chamber, it is a plurality of the busbar is established the end support with between the protective housing of arranging of converging, the protective housing of arranging of converging with the end support is fixed a position through first locating component, the protective housing of arranging of converging with be equipped with the card hole on another of first card foot on one of end support, the card hole with first card foot joint just has many pairs.

2. The battery module of claim 1, wherein the bottom of each group of the cells is provided with a bent cell supporting portion, two adjacent groups of the cell supporting portions are spaced apart, at least one heat-conducting support member is connected between at least some adjacent cell supporting portions, and the upper portions of the heat-conducting support members abut against the two groups of the cells respectively.

3. The battery module according to claim 2, wherein the thermally conductive supporting member comprises a first supporting body, a second supporting body and a third supporting body, the first supporting body is connected to the second supporting body in a step shape, the cell supporting portion is connected between the second supporting body and the first supporting body, and the bottom of the first supporting body is connected to the bottom wall; the third supporting body is connected to the upper portion of the second supporting body, and the third supporting body is supported between the two groups of battery cell side faces.

4. The battery module according to claim 2, further comprising a plurality of buffer foams, wherein the plurality of buffer foams are respectively disposed between the battery cells and the housing and between a portion of the two battery cells;

when being equipped with the buffering bubble cotton between two sets of electric core, the cooperation groove has been seted up at heat conduction support piece's top, the cotton embedding of buffering bubble in the cooperation groove.

5. The battery module as recited in claim 1, wherein the first positioning assembly comprises a positioning plug board disposed on the end bracket and a first socket disposed on the busbar protective casing, the positioning plug board being in plug-in fit with the first socket;

the left and right sides of first socket is equipped with the second card foot, two interval between the second card foot is less than the length of location picture peg, the bottom of location picture peg with the top contact of second card foot.

6. The battery module as recited in claim 1, wherein the end bracket has a plurality of latching ribs and a plurality of positioning posts protruding from a side thereof facing the busbar, the latching ribs abut against edges of the busbar, and the positioning posts are in positioning engagement with the busbar;

be equipped with a plurality ofly on the tip support respectively first card foot, it is a plurality of in the first card foot is followed the joint muscle is outwards extended, and is a plurality of at least two in the first card foot the orientation of first card foot is different, arrange the protective housing on with first card foot corresponds and is equipped with a plurality of card holes.

7. The battery module according to claim 6, wherein each first clamping leg comprises a first clamping plate extending towards the busbar protective casing and a second clamping plate arranged at an end of the first clamping plate, the second clamping plate is perpendicular to the first clamping plate, the end support is provided with a notch opposite to the second clamping plate, and the bottom of the first clamping plate is the top of the notch.

8. The battery module according to any one of claims 1 to 7, wherein the housing comprises a top case, a bottom case, two side cases, and two end cases, one end of each of the two side cases is connected to the bottom case, the other end of each of the two side cases is connected to the top case, the top case abuts against one side of the end bracket facing the accommodation chamber, and the end cases are connected to the side of the bus bar protection case away from the end bracket;

a plurality of positioning bulges protruding towards the end part support are arranged on the bottom shell, and a positioning groove matched with the positioning bulges is arranged on the end part support;

the side shell is provided with a second socket, the end shell is provided with a third socket, the side part of the end part support is provided with a plug-in buckle, and the plug-in buckle is sequentially matched with the second socket and the third socket in a plug-in mode.

9. The battery module according to claim 8, wherein portions of the end brackets are raised toward the receiving cavities and form partition ribs, the guide holes being formed between adjacent ones of the partition ribs;

a plurality of first heat dissipation holes are formed in the busbar protective shell, and parts of the first heat dissipation holes are opposite to the guide holes; a plurality of clamping columns are arranged on the busbar protective shell;

the end shell is provided with a plurality of second heat dissipation holes, and the clamping columns are clamped in the second heat dissipation holes.

10. The battery module according to any one of claims 1 to 7, further comprising two electrode protection covers, wherein each electrode protection cover is connected to one side of one of the end brackets, which is far away from the accommodating cavity, and each busbar protection shell is provided with an avoiding hole so that the electrode protection covers extend out;

the two end supports have the same structure, and the two busbar protective housings have the same structure.

Images