CN109309180B - Battery module and battery pack comprising same - Google Patents

Battery module and battery pack comprising same Download PDF

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Publication number
CN109309180B
CN109309180B CN201710624914.9A CN201710624914A CN109309180B CN 109309180 B CN109309180 B CN 109309180B CN 201710624914 A CN201710624914 A CN 201710624914A CN 109309180 B CN109309180 B CN 109309180B
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China
Prior art keywords
battery
plate
battery pack
battery module
outer plate
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Application number
CN201710624914.9A
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Chinese (zh)
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CN109309180A (en
Inventor
张建平
刘会敏
兰志波
翁志福
徐永军
王歌
王沐阳
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Aulton New Energy Automotive Technology Co Ltd
Shanghai Dianba New Energy Technology Co Ltd
Original Assignee
Aulton New Energy Automotive Technology Co Ltd
Shanghai Dianba New Energy Technology Co Ltd
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Application filed by Aulton New Energy Automotive Technology Co Ltd, Shanghai Dianba New Energy Technology Co Ltd filed Critical Aulton New Energy Automotive Technology Co Ltd
Priority to CN201710624914.9A priority Critical patent/CN109309180B/en
Priority to CN202110920876.8A priority patent/CN113745737B/en
Publication of CN109309180A publication Critical patent/CN109309180A/en
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Publication of CN109309180B publication Critical patent/CN109309180B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention discloses a battery module and a battery pack comprising the same. The battery module includes group battery and bottom plate, and the battery module still includes both sides board, two end plates, installing support and two and leads the electrical drainage subassembly, and curb plate and end plate set up along the length direction and the width direction of group battery respectively along the curb plate. The top of the side plate extends towards the direction close to the battery pack to form a first bending part, the end plate and the side plate are arranged at intervals and are sequentially connected to enclose an annular space, and the battery pack is positioned in the annular space; the mounting bracket is fixed on the top of the battery pack, and the first bending part is clamped between the mounting bracket and the top of the battery pack; the two conductive bar assemblies are pressed on the mounting support and correspondingly electrically connected to the positive poles or the negative poles of the plurality of battery monomers, and are used for realizing the series connection or the parallel connection of the plurality of battery monomers. The battery pack includes a battery module. The battery module is simple to operate in groups and convenient for replacing the bottom plate.

Description

Battery module and battery pack comprising same
Technical Field
The invention relates to a battery module and a battery pack comprising the same.
Background
The battery module includes casing and group battery, and the group battery is located the casing. The battery module casing generally includes a bottom plate, two side plates, and two end plates, and the bottom plate is welded directly to the side plates and the end plates. This kind of structure needs more welding step, and it is comparatively complicated to operate in groups, automated production of being not convenient for. In addition, once the welding of the housing is completed, it is not convenient to replace the base plate.
Therefore, the battery module in the prior art has the defects of complex grouping operation and inconvenience in replacing the bottom plate.
Disclosure of Invention
The invention aims to overcome the defects that the battery module in the prior art is complex in grouping operation and inconvenient in replacing a bottom plate, and provides a battery module and a battery pack comprising the same.
The invention solves the technical problems through the following technical scheme:
the utility model provides a battery module, includes group battery and bottom plate, the bottom of group battery is fixed in on the bottom plate, its characterized in that, battery module still includes:
the battery pack comprises two oppositely arranged side plates, a first bending part and a second bending part, wherein the side plates are arranged along the length direction of the battery pack, and the top of each side plate extends towards the direction close to the battery pack;
the two end plates are oppositely arranged and arranged along the width direction of the battery pack, the two end plates and the two side plates are arranged at intervals and are sequentially connected to enclose an annular space, and the battery pack is positioned in the annular space;
the mounting bracket is pressed and fixed on the top of the battery pack, and the first bending part is clamped between the mounting bracket and the top of the battery pack;
the battery pack comprises a plurality of battery monomers, and the two conductive bar assemblies are correspondingly and electrically connected with a plurality of positive poles or negative poles of the battery monomers and used for realizing series connection or parallel connection of the battery monomers.
In this scheme, the group battery is wrapped at the top of group battery to the first portion of bending of both sides board, and annular space, bottom plate, first portion of bending between curb plate and the end plate can wrap the group battery, curb plate and end plate all not with bottom plate direct contact to make the group operation of battery module comparatively simple, be convenient for change the bottom plate.
Preferably, the side plate includes a first outer plate located at an outer side and a first insulating plate located at an inner side, the first insulating plate is attached to an inner wall surface of the first outer plate, the first insulating plate is located between the first outer plate and the battery pack, and the first bent portion is located at a top of the first outer plate.
Preferably, a second bending portion extends from the top of the first insulating plate toward a direction close to the battery pack, the second bending portion has a first receiving groove, the first bending portion is engaged with the first receiving groove, and the second bending portion is interposed between the mounting bracket and the top of the battery pack.
In this scheme, the first portion of bending is lived in the cladding of second portion of bending, can play certain guard action to first portion of bending, has increased the intensity of first portion of bending in other words, has improved the reliability that battery module is in groups.
Preferably, at least one positioning flange is arranged on the first insulating plate, each of the at least one positioning flanges extends from one end, attached to the first outer plate, of the first insulating plate to a direction away from the battery pack, and at least one positioning hole matched with the at least one positioning flange is arranged on the first outer plate.
In this scheme, the reliability of being connected of first insulating plate and first planking has been increased in the cooperation of locating flange and locating hole, has further improved the reliability that battery module is in groups.
Preferably, the bottom of the first outer plate extends to a direction away from the battery pack to form a reinforcing part; the reinforcement having a horizontal portion and a vertical portion;
the horizontal part is adjacent to the bottom of the first outer plate and the vertical part, the vertical part and the first outer plate are arranged oppositely, and the vertical part and the first outer plate are positioned on the same side of the horizontal part.
In this scheme, the first planking has strengthened its self intensity through reinforcing part to battery module group's reliability has further been improved. In addition, the reinforcing part does not occupy the internal space of the battery module, and the compactness of the interior of the battery module is not influenced.
Preferably, at least one reinforcing rib is arranged on the first outer plate at intervals along the length direction.
Preferably, the bottom plate is provided with two oppositely arranged supporting portions, and the two first outer plates are pressed on the bottom plate through the supporting portions.
Preferably, the mounting bracket is provided with:
the two baffles are oppositely arranged and extend along the length direction of the battery pack;
the two baffle block assemblies are oppositely arranged and are positioned between the two baffle plates, each baffle block assembly comprises a plurality of baffle blocks, and the baffle blocks are arranged at intervals along the length direction of the battery pack;
the two conductive bar assemblies are abutted between the two baffles and the two stop block assemblies in one-to-one correspondence and used for limiting the movement of the two conductive bar assemblies along the width direction of the battery pack.
In this scheme, the electricity-conducting bar subassembly can reliably be installed on the installing support through baffle and dog subassembly.
Preferably, the inner side surface of each baffle is provided with a plurality of pressing plates arranged at intervals, and the plurality of pressing plates are arranged on the conductive bar assembly in a pressure-equalizing manner and used for limiting the movement of the conductive bar assembly along the height direction of the battery pack.
In this scheme, the clamp plate is located the top of leading electrical bar subassembly, can compress tightly leading electrical bar subassembly from the direction of height of group battery to the reliability of being connected between further improvement leading electrical bar subassembly and the installing support.
Preferably, the free top of battery is equipped with the hole of disappointing, follow on the installing support the length direction of group battery has the cavity that both ends run through, the cavity is located two between the dog subassembly, just the cavity with the free hole of disappointing of battery corresponds the setting.
In this scheme, the cavity can not influence the effect in the free hole of losing heart of battery to battery module group's reliability has further been improved.
Preferably, the top of each of the two end plates is provided with a connecting seat, the connecting seat of one of the end plates is connected with a first connecting terminal in a clamping manner, and the first connecting terminal is connected to the positive input/output end of the battery module;
a second connecting terminal is connected to the connecting seat of the other end plate in a clamping manner and is connected to the negative input and output end of the battery module;
the battery module is electrically connected with the outside through the first connecting terminal and the second connecting terminal.
In this scheme, first connecting terminal and second connecting terminal are convenient for battery module and external world to be connected.
Preferably, the connecting seat is provided with a first connecting part and a second connecting part which are connected end to end;
first connecting portion with interference fit between the top of end plate, be equipped with first draw-in groove on the second connecting portion, the second connecting portion pass through first draw-in groove block in first connecting terminal or second connecting terminal.
Preferably, a separator is sandwiched between any two adjacent battery cells.
Preferably, the partition plate includes two partition plate units, one end of each partition plate unit in the width direction of the battery pack is clamped between two adjacent battery cells, and the other end of each partition plate unit extends out of the battery cells and is located between the two side plates.
Preferably, the end plate includes a second outer plate located at an outer side and a second insulating plate located at an inner side, the second insulating plate being attached to an inner wall surface of the second outer plate, the second insulating plate being located between the second outer plate and the battery pack; the second outer plate is provided with a plurality of lightening holes, and the lightening holes correspondingly penetrate through the second outer plate along the length direction of the battery pack.
Preferably, the battery module further comprises a cover plate, and the cover plate is pressed on the mounting bracket;
the mounting bracket is provided with a plurality of second clamping grooves at intervals, the cover plate is provided with a plurality of buckles at intervals, and the cover plate is clamped on the mounting bracket through the plurality of second clamping grooves and the plurality of buckles.
Preferably, the bottom plate is covered with an insulating film, and the bottom of the battery pack is connected with the insulating film in an adhering mode.
The invention also provides a battery pack which is characterized by comprising a plurality of battery modules, wherein the battery modules are connected in series or in parallel.
The positive progress effects of the invention are as follows:
the battery pack can be wrapped at the top of the battery pack by the first bending parts of the two side plates in the battery module, the annular space between the side plates and the end plates, the bottom plate and the first bending parts can wrap the battery pack, and the side plates and the end plates are not in direct contact with the bottom plate, so that grouping operation of the battery module is simple, and the bottom plate is convenient to replace.
Drawings
Fig. 1 is a schematic view illustrating an overall structure of a battery module according to a preferred embodiment of the present invention.
Fig. 2 is an exploded view of a battery module according to a preferred embodiment of the present invention.
Fig. 3 is a schematic structural view of a side plate of a battery module according to a preferred embodiment of the invention.
Fig. 4 is a schematic structural view of a first outer plate in the battery module according to the preferred embodiment of the invention.
Fig. 5 is a schematic view illustrating a connection structure between a mounting bracket and a conductive bar assembly in a battery module according to a preferred embodiment of the invention.
Fig. 6 is a schematic structural view of a mounting bracket in a battery module according to a preferred embodiment of the invention.
Description of reference numerals:
10: base plate
101: supporting part
20: side plate
201: first bending part
202: a first outer plate
203: first insulating plate
204: second bending part
205: a first accommodation groove
206: positioning flange
207: locating hole
208: reinforcing part
209: reinforcing rib
30: end plate
301: connecting seat
302: first connecting terminal
303: second connecting terminal
304: first connecting part
305: second connecting part
306: first card slot
307: second outer plate
308: second insulating plate
309: lightening hole
40: mounting bracket
401: baffle plate
402: stop block assembly
403: pressing plate
404: second accommodation groove
405: hollow cavity
406: second card slot
50: conductive bar assembly
60: battery monomer
601: air release hole
70: adapter element
80: partition board
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
The battery pack comprises a plurality of battery modules which are connected in series or in parallel. As shown in fig. 1 and 2, the battery module includes a battery pack, a bottom plate 10, two opposite side plates 20, two opposite end plates 30, a mounting bracket 40, and two opposite busbar assemblies 50. Wherein, the bottom of the battery pack is fixed on the bottom plate 10; the side plates 20 are arranged along the length direction of the battery pack, and the top of each side plate 20 extends towards the direction close to the battery pack to form a first bending part 201; the end plate 30 is arranged along the width direction of the battery pack, the two end plates 30 and the two side plates 20 are arranged at intervals and are sequentially connected to enclose an annular space, and the battery pack is positioned in the annular space; the mounting bracket 40 is pressed and fixed on the top of the battery pack, and the first bending part 201 is clamped between the mounting bracket 40 and the top of the battery pack; the two conductive bar assemblies 50 are pressed on the mounting bracket 40, the battery pack comprises a plurality of battery monomers 60, and the two conductive bar assemblies 40 are correspondingly electrically connected to the positive poles or the negative poles of the plurality of battery monomers 60 and are used for realizing the serial connection or the parallel connection of the plurality of battery monomers 60.
In this embodiment, the group battery is wrapped at the top of group battery to the first portion of bending of both sides board, and annular space, bottom plate, first portion of bending between curb plate and the end plate can wrap the group battery, curb plate and end plate all not with bottom plate direct contact to make the group operation of battery module comparatively simple, be convenient for change the bottom plate.
In addition, in the present embodiment, a wire harness is welded to the conductive bar assembly for transmitting voltage signals and temperature signals of the plurality of battery cells.
As shown in fig. 3 and 4, the side panel 20 includes a first outer panel 202 located on the outer side and a first insulating panel 203 located on the inner side, the first insulating panel 203 is attached to the inner wall surface of the first outer panel 202, the first insulating panel 203 is located between the first outer panel 202 and the battery pack, and the first bent portion 201 is located on the top of the first outer panel 202. In addition, a second bending portion 204 extends from the top of the first insulating plate 203 toward the direction close to the battery pack, the second bending portion 204 has a first receiving groove 205, the first bending portion 201 is engaged with the first receiving groove 205, and the second bending portion 204 is interposed between the mounting bracket 40 and the top of the battery pack.
In this embodiment, the second bending portion covers the first bending portion, and can protect the first bending portion to a certain extent, which is equivalent to increase the strength of the first bending portion, and improves the reliability of battery module grouping.
As shown in fig. 3 and 4, the first insulating plate 203 is provided with at least one positioning flange 206, each positioning flange 206 of the at least one positioning flange 206 extends from one end of the first insulating plate 203 attached to the first outer plate 202 toward a direction away from the battery pack, and the first outer plate 202 is provided with at least one positioning hole 207 matched with the at least one positioning flange 206.
In the embodiment, the matching of the positioning flange and the positioning hole increases the connection reliability of the first insulating plate and the first outer plate, and further improves the grouping reliability of the battery modules.
As shown in fig. 3 and 4, the bottom of the first outer plate 202 extends with a reinforcement portion 208 in a direction away from the battery pack; the reinforcement 208 has a horizontal portion and a vertical portion; the horizontal portion is adjacent to the bottom of the first outer plate 202 and the vertical portion, the vertical portion is opposite to the first outer plate 202, and the vertical portion and the first outer plate 202 are located on the same side of the horizontal portion. As shown in fig. 4, at least one rib 209 is provided at intervals in the longitudinal direction on the first outer plate 202.
In the present embodiment, the first outer plate enhances its own strength by the reinforcing portion, thereby further improving the reliability of battery module grouping. In addition, the reinforcing part does not occupy the internal space of the battery module, and the compactness of the interior of the battery module is not influenced.
As shown in fig. 1 and 2, the bottom plate 10 has two support portions 101 disposed opposite to each other, and the two first outer plates 202 are pressed against the bottom plate 10 through the support portions 101. In addition, an insulating film (not shown) is further coated on the bottom plate 10, and the bottom of the battery pack is connected to the insulating film in an adhesive manner.
It should be noted that, in other alternative embodiments, other relative positional relationships may also exist between the first outer plate and the bottom plate, for example, the bottom of the first outer plate is provided with a slot, and two edges of the bottom plate are clamped in the slot of the first outer plate; for example, the bottom of the first outer plate is adhered to two edges of the bottom plate.
As shown in fig. 1, 2, 5 and 6, two opposite baffles 401 and two opposite block assemblies 402 are disposed on the mounting bracket 40. Wherein, two baffles 401 extend along the length direction of the battery pack; the two baffle block assemblies 402 are positioned between the two baffles 401, each baffle block assembly 402 comprises a plurality of baffle blocks, and the baffle blocks are arranged at intervals along the length direction of the battery pack; the two conductive bar assemblies 50 are abutted between the two baffles 401 and the two block assemblies 402 in a one-to-one correspondence manner, and are used for limiting the movement of the two conductive bar assemblies 50 along the width direction of the battery pack. In this embodiment, the busbar assembly can be reliably mounted to the mounting bracket by the baffle and the stop assembly.
In addition, as shown in fig. 1, 2, 5 and 6, each baffle 401 has a plurality of pressing plates 403 spaced apart from each other on the inner side surface thereof, and the plurality of pressing plates 403 are disposed on the current conducting bar assembly 50 in a pressure-equalizing manner for limiting the movement of the current conducting bar assembly 50 in the height direction of the battery pack.
In this embodiment, the pressing plate is located above the busbar assembly, and can press the busbar assembly from the height direction of the battery pack, thereby further improving the reliability of connection between the busbar assembly and the mounting bracket.
In the present embodiment, as shown in fig. 2, the adaptor elements 70 are disposed on the positive and negative posts of the plurality of battery cells 60, and the two busbar assemblies 50 are electrically connected to the positive or negative posts of the plurality of battery cells 60 through the plurality of adaptor elements 70; the switching element 70 is provided with a pole containing hole, the pole containing hole penetrates through the switching element 70 along the height direction of the battery pack, and the switching element 70 is sleeved on the positive pole or the negative pole of the battery monomer 60 through the pole containing hole. As shown in fig. 5 and 6, the mounting bracket 40 is provided with a plurality of second receiving grooves 404, the plurality of second receiving grooves 404 are disposed in one-to-one correspondence with the plurality of adapter elements 70 in fig. 2, each second receiving groove 404 penetrates through the mounting bracket 40 along the height direction of the battery pack, and at least a portion of each adapter element 70 penetrates through the corresponding second receiving groove 404.
In addition, as shown in fig. 1, fig. 2, fig. 5 and fig. 6, the top of the battery cell 60 is provided with a relief hole 601, the mounting bracket 40 is provided with a cavity 405 with two ends penetrating along the length direction of the battery pack, the cavity 405 is located between the two block assemblies 402, and the cavity 405 is arranged corresponding to the relief hole 601 of the battery cell 60.
In this embodiment, the cavity does not affect the function of the air release hole of the battery cell, thereby further improving the reliability of battery module grouping.
As shown in fig. 1 and fig. 2, the top of each of the two end plates 30 is provided with a connecting seat 301, wherein the connecting seat 301 of one end plate 30 is connected with a first connecting terminal 302 in a clamping manner, and the first connecting terminal 302 is connected to the positive input/output end of the battery module; a second connection terminal 303 is connected to the connection seat 301 of the other end plate 30 in a clamping manner, and the second connection terminal 303 is connected to the negative input/output end of the battery module; the battery module is electrically connected to the outside through the first connection terminal 302 and the second connection terminal 303. As shown in fig. 2, the connector holder 301 has a first connector portion 304 and a second connector portion 305 connected end to end; the first connecting portion 304 is in interference fit with the top of the end plate 30, the second connecting portion 305 is provided with a first engaging groove 306, and the second connecting portion 305 is engaged with the first connecting terminal 302 or the second connecting terminal 303 through the first engaging groove 306.
In the present embodiment, as shown in fig. 2, a separator 80 is interposed between any two adjacent battery cells 60. The partition plate 80 includes two partition plate units, one end of each partition plate unit in the width direction of the battery pack is clamped between two adjacent battery cells 60, and the other end of each partition plate unit extends out of the battery cells 60 and is located between the two side plates 20.
As shown in fig. 2, the end plate 30 includes a second outer plate 307 on the outside and a second insulating plate 308 on the inside, the second insulating plate 308 being attached to the inner wall surface of the second outer plate 307, the second insulating plate 308 being located between the second outer plate 307 and the battery pack; the second outer plate 307 is provided with a plurality of lightening holes 309, and the lightening holes 309 correspondingly penetrate through the second outer plate 307 along the length direction of the battery pack.
In the present embodiment, the battery module further includes a cover plate (not shown) pressed on the mounting bracket; as shown in fig. 1, 2, 5 and 6, the mounting bracket 40 is provided with a plurality of second engaging grooves 406 at intervals, the cover plate is provided with a plurality of fasteners at intervals, and the cover plate is engaged with the mounting bracket 40 through the plurality of second engaging grooves 406 and the plurality of fasteners.
The battery pack can be wrapped at the top of the battery pack by the first bending parts of the two side plates in the battery module, the annular space between the side plates and the end plates, the bottom plate and the first bending parts can wrap the battery pack, and the side plates and the end plates are not in direct contact with the bottom plate, so that grouping operation of the battery module is simple, and the bottom plate is convenient to replace.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (14)

1. The utility model provides a battery module, includes group battery and bottom plate, the bottom of group battery is fixed in on the bottom plate, its characterized in that, battery module still includes:
the battery pack comprises two oppositely arranged side plates, a first bending part and a second bending part, wherein the side plates are arranged along the length direction of the battery pack, and the top of each side plate extends towards the direction close to the battery pack;
the two end plates are oppositely arranged and arranged along the width direction of the battery pack, the two end plates and the two side plates are arranged at intervals and are sequentially connected to enclose an annular space, and the battery pack is positioned in the annular space;
the mounting bracket is pressed and fixed on the top of the battery pack, and the first bending part is clamped between the mounting bracket and the top of the battery pack;
the two conductive bar assemblies are oppositely arranged and pressed on the mounting bracket, the battery pack comprises a plurality of battery monomers, and the two conductive bar assemblies are correspondingly electrically connected to positive poles or negative poles of the battery monomers and are used for realizing the series connection or the parallel connection of the battery monomers;
the side plate comprises a first outer plate positioned on the outer side and a first insulating plate positioned on the inner side, the first insulating plate is attached to the inner wall surface of the first outer plate, the first insulating plate is positioned between the first outer plate and the battery pack, and the first bending part is positioned at the top of the first outer plate;
the top of the first insulating plate extends towards a direction close to the battery pack to form a second bending portion, the second bending portion is provided with a first accommodating groove, the first bending portion is clamped in the first accommodating groove, and the second bending portion is clamped between the mounting bracket and the top of the battery pack.
2. The battery module according to claim 1, wherein the first insulating plate is provided with at least one positioning flange, each of the at least one positioning flange extends from one end of the first insulating plate, which is attached to the first outer plate, in a direction away from the battery pack, and the first outer plate is provided with at least one positioning hole, which is matched with the at least one positioning flange.
3. The battery module according to claim 1, wherein the bottom of the first outer plate is extended with a reinforcing part in a direction away from the battery pack; the reinforcement having a horizontal portion and a vertical portion;
the horizontal part is adjacent to the bottom of the first outer plate and the vertical part, the vertical part and the first outer plate are oppositely arranged, and the vertical part and the first outer plate are positioned on the same side of the horizontal part;
at least one reinforcing rib is arranged on the first outer plate at intervals along the length direction.
4. The battery module according to claim 1, wherein the base plate has two support portions disposed opposite to each other, and the two first outer plates are pressed against the base plate by the support portions;
the mounting bracket is provided with:
the two baffles are oppositely arranged and extend along the length direction of the battery pack;
the two baffle block assemblies are oppositely arranged and are positioned between the two baffle plates, each baffle block assembly comprises a plurality of baffle blocks, and the baffle blocks are arranged at intervals along the length direction of the battery pack;
the two conductive bar assemblies are abutted between the two baffles and the two stop block assemblies in one-to-one correspondence and used for limiting the movement of the two conductive bar assemblies along the width direction of the battery pack.
5. The battery module according to claim 4, wherein the inner side surface of each baffle has a plurality of pressure plates arranged at intervals, and the pressure plates are arranged on the conductive bar assembly in a pressure-equalizing manner and used for limiting the movement of the conductive bar assembly in the height direction of the battery pack.
6. The battery module as claimed in claim 4, wherein the top of the battery cell is provided with a gas release hole, the mounting bracket is provided with a cavity having two ends penetrating along the length direction of the battery pack, the cavity is located between the two stop block assemblies, and the cavity is disposed corresponding to the gas release hole of the battery cell.
7. The battery module as claimed in claim 1, wherein the top of each of the two end plates is provided with a connecting seat, and a first connecting terminal is connected to the connecting seat of one of the end plates in a snap-fit manner and connected to the positive input/output end of the battery module;
a second connecting terminal is connected to the connecting seat of the other end plate in a clamping manner and is connected to the negative input and output end of the battery module;
the battery module is electrically connected with the outside through the first connecting terminal and the second connecting terminal.
8. The battery module according to claim 7, wherein the connecting holder has first and second connecting parts connected end to end;
first connecting portion with interference fit between the top of end plate, be equipped with first draw-in groove on the second connecting portion, the second connecting portion pass through first draw-in groove block in first connecting terminal or second connecting terminal.
9. The battery module according to claim 1, wherein a separator is interposed between any adjacent two of the battery cells.
10. The battery module according to claim 9, wherein the partition comprises two partition units, one end of each partition unit in the width direction of the battery pack is sandwiched between two adjacent battery cells, and the other end of each partition unit extends out of the battery cells and is located between the two side plates.
11. The battery module according to claim 1, wherein the end plate includes a second outer plate on an outer side and a second insulating plate on an inner side, the second insulating plate being attached to an inner wall surface of the second outer plate, the second insulating plate being located between the second outer plate and the battery pack; the second outer plate is provided with a plurality of lightening holes, and the lightening holes correspondingly penetrate through the second outer plate along the length direction of the battery pack.
12. The battery module of claim 1, further comprising a cover plate pressed against the mounting bracket;
the mounting bracket is provided with a plurality of second clamping grooves at intervals, the cover plate is provided with a plurality of buckles at intervals, and the cover plate is clamped on the mounting bracket through the plurality of second clamping grooves and the plurality of buckles.
13. The battery module according to any one of claims 1 to 12, wherein the base plate is covered with an insulating film, and the bottom of the battery pack is adhesively connected to the insulating film.
14. A battery pack, comprising a plurality of battery modules according to any one of claims 1 to 13, connected in series or in parallel.
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KR101547395B1 (en) * 2013-10-11 2015-08-25 세방전지(주) Housing for battery module
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US20160133889A1 (en) * 2014-11-07 2016-05-12 Cheng Uei Precision Industry Co., Ltd. Battery holder

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