WO2018161324A1 - 圆柱形锂电池组 - Google Patents

圆柱形锂电池组 Download PDF

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Publication number
WO2018161324A1
WO2018161324A1 PCT/CN2017/076207 CN2017076207W WO2018161324A1 WO 2018161324 A1 WO2018161324 A1 WO 2018161324A1 CN 2017076207 W CN2017076207 W CN 2017076207W WO 2018161324 A1 WO2018161324 A1 WO 2018161324A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
battery holder
current carrier
parallel current
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/076207
Other languages
English (en)
French (fr)
Inventor
康小斌
潘险峰
康斌林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Puyi Battery Technology Co Ltd
Original Assignee
Shenzhen Puyi Battery Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Puyi Battery Technology Co Ltd filed Critical Shenzhen Puyi Battery Technology Co Ltd
Priority to PCT/CN2017/076207 priority Critical patent/WO2018161324A1/zh
Publication of WO2018161324A1 publication Critical patent/WO2018161324A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6562—Gases with free flow by convection only
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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

Definitions

  • the present application relates to the field of lithium battery technology, and in particular, to a cylindrical lithium battery pack.
  • the purpose of the present application is to provide a cylindrical lithium battery pack that is simple in assembly, structurally stable, and convenient to maintain in view of the above problems.
  • a cylindrical lithium battery pack comprising at least two battery modules connected in order from left to right in a linear direction, Each of the battery modules includes:
  • an electric core layer disposed between the left battery holder and the right battery holder, the electric core layer being composed of a plurality of parallel-distributed single cells, and the single cell The axis extends left and right, and
  • the right battery holder of the battery module on the left side and the left battery holder of the battery module on the right side are fixed by screws, and both A first intermediate parallel current carrier and a second intermediate parallel current carrier connected to the corresponding single cell, the first intermediate parallel carrier and the second intermediate parallel carrier are interposed therebetween Insulation isolation
  • the battery module at the leftmost end, the left side portion of the left battery holder is fixed with a series current-carrying piece connected to the single-cell battery in the battery module;
  • the right side of the right battery holder is fixed with a positive output parallel current carrier and a negative output parallel current carrier connected to the corresponding single cell in the battery module. sheet.
  • connection manner between the first intermediate parallel current carrier and the corresponding single cell is a contact connection
  • the second intermediate parallel current carrier and corresponding The connection between the cell cells is a contact connection
  • the connection between the series current carrier and the corresponding cell is a contact connection
  • the negative output parallels the current carrier and the corresponding device The connection mode between the cell cells is a contact connection
  • the connection mode between the negative electrode output parallel current carrier and the corresponding cell cell is a contact connection.
  • the first intermediate parallel current carrier, the second intermediate parallel current carrier, the serial current carrier, the positive output parallel current carrier, and the negative output parallel current carrier are both It is fixedly connected to the corresponding left battery holder or right battery holder by means of structural glue and screw locking.
  • the battery module at the leftmost end, the left side of the left battery holder is also fixed by a screw to a left carrier piece that is shielded from the series current-carrying piece. Insulation fixing plate; the rightmost battery module, the right side of the right battery holder is also fixed by screws to the right current output parallel current-carrying plate and the negative current output parallel current-carrying plate board.
  • the left battery holder and the right battery holder are formed with a foolproof column, the first intermediate parallel current carrier, the second intermediate parallel current carrier, and the series
  • the current-carrying sheet, the positive output parallel current-carrying piece, the negative output parallel-connected current-carrying piece, the left-side current-storing plate insulating fixed plate and the right current-carrying plate insulating fixed plate are formed with a foolproof hole adapted to the anti-dwelling column.
  • the left battery holder, the right battery holder, the first intermediate parallel current carrier, the second intermediate parallel current carrier, the series current carrier, and the positive output parallel load The flow sheet, the negative output parallel current carrier, the left current carrier insulation fixed plate and the right current carrier insulating fixed plate are densely disposed through the ventilation holes of the cylindrical lithium battery.
  • the left battery holder and the right battery holder are respectively formed with a battery core socket, and the axial ends of the single battery core are respectively inserted in In the battery core socket of the left battery holder and the right battery holder.
  • the left battery holder and the right battery holder are provided with interlocking anti-stasis posts and anti-dwelling holes.
  • the top of the cylindrical lithium battery pack is fixed by a screw lock
  • the right battery holder is formed with an insulating spacer for insulating and isolating the first intermediate parallel current carrier and the second intermediate parallel current carrier.
  • the wire trough can be fixed to the wire protection, so that the voltage acquisition temperature acquisition signal line can be arranged in an orderly manner, to avoid electromagnetic interference of the acquisition line signal line.
  • the positive and negative outputs of the battery module are single-sided, which reduces the difficulty of the integrated conductive connection of the module.
  • FIG. 1 is a schematic exploded view of a cylindrical lithium battery pack according to an embodiment of the present application.
  • FIG. 2 is a schematic view showing the overall assembly structure of a cylindrical lithium battery pack according to an embodiment of the present application
  • FIG. 3 is a schematic cross-sectional structural view of a cylindrical lithium battery pack according to an embodiment of the present application.
  • FIG. 4 is a schematic structural view of a left battery holder in the embodiment of the present application.
  • connection and “connection” as used in this application include direct and indirect connections (connections) unless otherwise stated.
  • the cylindrical lithium battery pack of the present application which is identical to the conventional cylindrical lithium battery pack, and also includes the sequential connection from left to right in a linear direction.
  • the number of battery modules can be flexibly set according to power and capacity requirements, and is generally at least two, and specifically four in this embodiment.
  • a key improvement of this embodiment is:
  • Each of the battery modules includes: a left battery holder 1 of an insulating material, a right battery holder 2 of an insulating material, a cell layer disposed between the left battery holder 1 and the right battery holder 2, and The left battery holder 1 and the right battery holder 2 are locked and fixed together with a locking screw. It is not difficult to understand that the left battery holder 1 and the right battery holder 2 are locked and fixed together by the locking screws, thereby greatly improving the connection between the left battery holder 1, the right battery holder 2 and the single battery unit 3. stability.
  • the foregoing electric core layer is composed of a plurality of parallel cylindrical unit cells 3, and the axis of each unit cell 3 is arranged left and right. The specific number of the unit cells 3 in each core layer can be based on the power. Flexible setting with capacity requirements.
  • the aforementioned locking screw locks the left battery holder 1 and the right battery holder 2 together along the axial direction of the unit cell 3, thereby axially clamping each of the unit cells 3 to the left. Between the battery holder 1 and the right battery holder 2, the unit cell 3 is prevented from being dislocated, and the structural stability of the battery pack is enhanced.
  • the right battery holder 2 of the battery module on the left side and the left battery holder 1 of the battery module on the right side are arranged next to each other, and both (" The two “respectively refer to the right battery holder 2 of the battery module on the left side of the adjacent two adjacent battery modules and the left battery holder 1 of the battery module on the right side, respectively"
  • the two respectively mean between the right battery holder 2 of the battery module on the left side of the adjacent two battery modules and the left battery holder 1 of the battery module on the right side.
  • a first intermediate parallel current carrier 4 and a second intermediate parallel current carrier 5 connected to the corresponding single cell 3 are interposed, and the first intermediate parallel current carrier 4 and the second intermediate parallel current carrier 5 are insulated. isolation.
  • the corresponding right battery holder 2 is formed with an insulating spacer J, which separates the first intermediate parallel carrier piece 4 and the second intermediate parallel carrier piece 5 from each other, thereby reducing the short circuit occurring in the assembled production process.
  • Risk Insulation spacer J is also formed on the right battery holder 2 of the rightmost battery module for insulating isolation of the following positive output parallel carrier current piece 7 and negative output parallel current carrier piece 8).
  • each of the individual cell cores 3 in each of the cell layers can be divided into two groups.
  • the number of cells of the two sets of cell cores 3 is equal, and the two sets of cell cores 3 are The distribution direction is reversed.
  • One set of positive electrodes is arranged to the left and the negative electrode is arranged to the right, and the other set of negative electrodes is arranged to the left and the positive electrode is arranged to the right.
  • the first intermediate parallel current carrier 4 and the second intermediate parallel current carrier 5 are connected to the two sets of individual cells 3, respectively.
  • the left side portion of the left battery holder 1 is fixed with a series current-carrying sheet 6 connected to the unit cells 3 in the battery module.
  • the battery module at the right end, the right side of the right battery holder 2 is fixed with a positive output parallel current carrier 7 and a negative output parallel current carrier connected to the corresponding single cell 3 in the battery module.
  • leftmost end and rightmost end as used herein mean the two battery modules at the left and right end portions among all the battery modules which are sequentially arranged from left to right in the linear direction.
  • connection between the first intermediate parallel carrier piece 4 and the corresponding single cell 3 is a contact connection instead of a conventional solder connection.
  • the connection between the second intermediate parallel carrier piece 5 and the corresponding unit cell 3 is a contact connection instead of a conventional solder connection.
  • the connection between the series current-carrying sheets 6 and the corresponding unit cells 3 is a contact connection instead of a conventional solder connection.
  • the connection between the positive output parallel current carrier 7 and the corresponding single cell 3 is a contact connection instead of a conventional solder connection.
  • connection between the negative output parallel current carrier 8 and the corresponding single cell 3 is a contact connection instead of a conventional solder connection.
  • the components ie, the first intermediate parallel current carrier 4, the second intermediate parallel current carrier 5, the series current carrier 6, the positive output parallel current carrier 7 and the negative output parallel current carrier 8) are in contact with the single cell.
  • the tight connection method can avoid the damage of the battery core caused by the group of conductive welding processes, and can reduce the assembly difficulty of the battery pack and improve the mass production efficiency.
  • the first intermediate parallel current carrier 4, the second intermediate parallel current carrier 5, the serial current carrier 6, and the positive output are connected in parallel.
  • the flow piece 7 and the negative output parallel current-carrying piece 8 are fixedly connected to the corresponding left battery holder 1 or right battery holder 2 by means of structural glue and screw locking.
  • the structural adhesive and the screw for assembling the current-carrying conductive sheet and the battery holder are locked and fixed, and in the state of ensuring stress dispersion and sufficient strength, the series connection of the battery pack is electrically connected by the compact pressing method, and the welding process can be avoided.
  • the battery is damaged.
  • the first intermediate parallel current-carrying sheet 4 and the second intermediate parallel current-carrying sheet 5 are fixedly connected to the corresponding right battery holder 2 by structural rubber and screw locking.
  • the series current-carrying strips 6 are fixedly connected to the left battery holder 1 of the leftmost battery module by means of structural glue and screw locking.
  • Positive output parallel carrier current 7 and negative output parallel current carrier 8 is fixedly connected to the right battery holder 2 of the rightmost battery module by means of structural rubber and screw locking.
  • the positive output parallel current carrier 7 and the negative output parallel current carrier 8 of the battery pack are arranged on the same side, and the positive and negative poles are unilaterally output, which reduces the difficulty of the integrated conductive connection of the battery module.
  • connection parallel carrier current piece 7 and the negative output parallel current carrier piece 8 are connected to the corresponding left battery holder 1 or the right battery holder 2, and the lithium battery pack is also provided with a left current carrier insulation fixing plate 9 and a right load.
  • the flow sheet is insulated from the fixing plate 10.
  • the left current-carrying plate insulating fixing plate 9 is fixed to the left side of the left battery holder 1 of the leftmost battery module by screwing, and the left-side current-carrying insulating fixing plate 9 covers the series current-carrying plate 6 Inside, the series current-carrying sheet 6 is sandwiched between the left current-carrying sheet insulating fixing plate 9 and the left battery holder 1 of the leftmost battery module.
  • the right current-carrying plate insulating fixing plate 10 is fixed to the right side of the right battery holder 2 of the rightmost battery module by screwing, and the right current-carrying plate insulating fixing plate 10 connects the positive electrode output parallel current-carrying plate 7 and the negative electrode output.
  • the parallel current-carrying strip 8 is covered therein, that is, the positive output parallel-connected current-carrying sheet 7 and the negative-electrode output parallel current-carrying sheet 8 are It is sandwiched between the right current-carrying plate insulating fixing plate 10 and the right battery holder 2 of the rightmost battery module.
  • the left current-carrying plate insulating fixing plate 9 and the right current-carrying plate insulating fixing plate 10 provide insulation protection for the series current-carrying sheet 6, the positive output parallel-connected current-carrying sheet 7, and the negative-electrode output parallel current-carrying sheet 8.
  • a screw for connecting the series current-carrying sheet 6 and the corresponding left battery holder 1 (the left battery holder 1 of the leftmost battery module), for connecting the left carrier insulating plate 9 and the corresponding left battery
  • the screws of the holder 1 can be the same set of screws, or two different sets of screws can be used. Specifically, in the present embodiment, two different sets of screws are used, and the cymbal is assembled. First, the series current-carrying piece 6 is connected and fixed to the corresponding left battery holder 1 by using the first set of screws and structural adhesive, and then the second set of screws is used. The left current-carrying plate insulating fixing plate 9 and the corresponding left battery holder 1 are connected and fixed, so that the series current-carrying sheets 6 are pressed against the corresponding left battery holder 1.
  • the insulating fixing plate 9 and the right current-carrying plate insulating fixing plate 10 are mounted on the left battery holder 1 or the right battery holder 2.
  • a plurality of anti-proof are formed on the left battery holder 1 and the right battery holder 2 Stall A, first intermediate parallel current carrier 4, second intermediate parallel current carrier 5, series current carrier 6, positive output parallel current carrier 7, negative output parallel current carrier 8, and left current carrier insulation
  • the plate 9 and the right current-carrying plate insulating fixing plate 10 are provided with a foolproof hole G fitted to the anti-snaking column A.
  • First intermediate parallel current carrier 4 Second intermediate current carrier 5
  • series current carrier 6 positive output parallel current carrier 7
  • negative output parallel current carrier 8 left current carrier insulation fixed plate 9, right
  • the anti-dwelling hole G is first put on the corresponding anti-snagging column A, thereby pre-positioning the assembly position thereof. Bit, then use screw to fix it.
  • the structural design of the anti-stasis column and the anti-dwelling hole can reduce the operation error and improve the efficiency of the installation of the current-carrying conductive plate and the battery holder (ie, the left and right battery holders 2 described above).
  • the present embodiment is in the above left battery holder 1, the right battery holder 2, the first intermediate parallel current carrier 4, the second intermediate parallel current carrier 5, and the series
  • the current-carrying sheet 6, the positive output parallel current-carrying sheet 7, the negative-electrode output parallel current-carrying sheet 8, the left current-carrying sheet insulating fixed plate 9 and the right current-carrying plate insulating fixed plate 10 are each provided with a ventilation vent hole B, and these The ventilation holes B on the components communicate with each other, and the whole is self-made to the right through the cylindrical lithium battery pack, which is called a through-type heat dissipation hole.
  • the through-type ventilation vents provide ventilation passages for the heat dissipation of each of the individual cells, enhance the flexibility and feasibility of thermal management, ensure that the battery pack operates in a suitable environment, and increase the cycle life of the battery pack.
  • the structure of the ventilation vent hole B is further optimized in the embodiment: a left battery holder 1, a right battery holder 2, a first intermediate parallel carrier sheet 4, The second intermediate parallel current carrier 5, the serial current carrier 6, the positive output parallel current carrier 7, the negative output parallel current carrier 8, the left current carrier insulating fixed plate 9, and the right current carrier insulating fixed plate 10
  • the ventilation hole B is arranged to penetrate the cylindrical lithium battery pack in a straight line, so that the resistance of the heat dissipation airflow in the ventilation ventilation hole B ⁇ can be reduced, and the flow velocity of the heat dissipation airflow can be increased.
  • the ventilation holes on the left and right battery holders are arranged offset from the battery sockets on the battery holders, so that the end portions of the cells are blocked from the ventilation holes after the single cells are inserted. Further, the ventilation holes on the left and right battery holders are disposed at a central position between the adjacent four battery core jacks thereon, so as to facilitate the airflow of the air flow on the left and right battery holders. It can also ensure that the structural strength of the left and right battery holders is not significantly reduced due to the large number of cell sockets and ventilation holes.
  • the first intermediate parallel current carrier 4, the second intermediate parallel current carrier 5, the serial current carrier 6, the positive output parallel current carrier 7, the negative output parallel current carrier 8, and the left load The flow sheet insulating fixing plate 9 and the right current carrying sheet insulating fixing plate 10 are each arranged perpendicular to the unit cell 3.
  • the battery holder of the battery pack includes four left battery holders 1 and four right battery holders 2.
  • the series current carrier of the battery pack includes three first intermediate parallel current carriers 4, three second intermediate parallel current carriers 5, one positive output parallel current carrier 7 and one negative output parallel current carrier 8 .
  • the series current-carrying sheets of the battery pack are a series current-carrying sheet 6 in FIG. 1, and two current-carrying sheet insulating fixing plates are respectively a left-carrying sheet insulating fixed plate 9 and a right-carrying plate insulating fixed plate 10 .
  • a person skilled in the art can flexibly design the number and structure of the battery holder, the series current carrier, the parallel current carrier and the current carrier insulation fixing plate on the battery according to actual needs, and if the battery is to be improved For the heat dissipation performance of the group, it is generally recommended to provide ventilation holes through the battery pack in the battery holder, the series current carrier, the parallel current carrier and the current carrier insulation fixing plate.
  • the single cell 3 is prevented from being detached from the left battery holder 1 or the right battery holder 2
  • the present embodiment is in the left battery holder 1
  • the right battery holder 2 is formed with a battery core socket, and the axial ends of the single battery core 3 are respectively inserted into the battery core sockets of the left battery holder 1 and the right battery holder 2.
  • the battery sockets on the left battery holder 1 and the right battery holder 2 are marked with positive and negative labels.
  • the present embodiment has the anti-dwelling columns and the anti-dwelling holes which are matched with each other on the left battery holder 1 and the right battery holder 2 of each battery module. After assembly, firstly insert the anti-staying column and the anti-dwelling hole into each other to realize the pre-positioning of the left battery holder 1 and the right battery holder 2, and then fix the two by screws.
  • the present embodiment is disposed on the outer edge of each of the left battery holder 1 and the right battery holder 2 so as to be perpendicular to the axis of the single cell 3
  • the screw hole is used to connect the corresponding electrical accessory with a screw locked into the screw hole, such as the PCB board 11 in FIG. 1, and the corresponding plug interface F is disposed on the PCB board 11.
  • the corresponding left battery holder 1 and the right battery holder 2 are provided with a dark buckle through slot.
  • the cable buckle D and the temperature wire placement slot, the collection line and the temperature wire of the battery pack are led out to one side of the battery pack through the aforementioned dark buckle through slot C, the cable buckle D and the temperature wire placement slot E, and Interfacing with the corresponding plug interface F on the PCB board 11.
  • the first group of cells 3 are then inserted into the cell socket of the left battery holder 1 of the above-mentioned structural member 1.
  • Inserting the exposed end of the first group of cells 3 ie, the exposed end that has not been inserted into the cell socket
  • the left battery holder 1 of the first member and the right battery holder 2 of the first structural member 2 are screwed and fixed.

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

Abstract

一种圆柱形锂电池组。该圆柱形锂电池组包括沿直线方向自左向右依次相连的至少两个电池模块，每个电池模块均包括：左电池固定架（1），右电池固定架（2），设于左电池固定架和右电池固定架之间的电芯层，将左电池固定架和右电池固定架锁紧固定在一起的锁紧螺丝；在任意相邻的两个电池模块中，处于左侧的电池模块的右电池固定架和处于右侧的电池模块的左电池固定架通过螺丝锁紧固定，并且二者之间夹设第一中间并联载流片（4）和第二中间并联载流片（5）；处于最左端的电池模块，其左电池固定架的左侧部固定有串联载流片（6）；处于最右端的电池模块，其右电池固定架的右侧部固定有正极输出并联载流片（7）和负极输出并联载流片（8）。该圆柱形锂电池组具有组装简单、结构稳固、方便维护的优点。

Description

发明名称：圆柱形锂电池组
技术领域
[0001] 本申请涉及锂电池技术领域， 具体涉及一种圆柱形锂电池组。
背景技术
[0002] 1、 许多电池系统一例如动力锂离子电池系统， 其单体数量多， 在工作过程 中 （特别是在大倍率充放电过程中） 会产生大量的热量， 在电池系统箱体模块 中， 内部的单体电芯的热量的散出十分困难， 模块间的热量堆积， 会造成电池 箱体内部温升很高， 这不仅使电池组的循环寿命降低， 还会引起严重的安全问 题。 因此， 这就要求电池模块能良好的热散结构。
[0003] 2、 现有圆柱形锂电池组中， 其单体电芯与载流板的导电， 采用焊接连接。 焊 接导电连接导致多个单体电芯焊接成整体， 单节电芯损坏以及集流导电板的安 全保护功能失效吋无法维修。 单节电芯间无通风孔的风道设计， 导致热量的堆 积， 电池组温度的升高， 电池组的温差加大。
[0004] 3、 圆柱电池的成组， 现有方式都是使用带有圆形孔位的固定支架来做成组方 式。 孔位的尺寸公差以及电池直径的尺寸公差累加， 导致电池模组内部电池无 法完全固定， 电池模组内部电池无法达到完全固定的状态下存在产品使用过程 中焊点脱落。 导致电池损坏。
技术问题
[0005] 在此处键入技术问题描述段落。
问题的解决方案
技术解决方案
[0006] 发明内容
[0007] 本申请的目的是： 针对上述问题， 提供一种组装简单、 结构稳固、 方便维护的 圆柱形锂电池组。
[0008] 为了达到上述目的， 本申请的技术方案是：
[0009] 一种圆柱形锂电池组，包括沿直线方向自左向右依次相连的至少两个电池模块， 每个所述电池模块均包括：
[0010] 绝缘材质的左电池固定架，
[0011] 绝缘材质的右电池固定架，
[0012] 布置于所述左电池固定架和所述右电池固定架之间的电芯层， 所述电芯层由若 干颗平行分布的单体电芯组成， 并且所述单体电芯的轴线左右延伸布置， 以及
[0013] 将所述左电池固定架和所述右电池固定架沿着所述单体电芯的轴线方向锁紧固 定在一起的锁紧螺丝；
[0014] 在任意相邻的两个所述电池模块中， 处于左侧的那个电池模块的右电池固定架 和处于右侧的那个电池模块的左电池固定架通过螺丝锁紧固定，并且二者之间夹 设有与对应的所述单体电芯相连接的第一中间并联载流片和第二中间并联载流 片， 所述第一中间并联载流片和第二中间并联载流片绝缘隔离；
[0015] 处于最左端的那个电池模块， 其左电池固定架的左侧部固定有与该电池模块中 所述单体电芯相连接的串联载流片；
[0016] 处于最右端的那个电池模块， 其右电池固定架的右侧部固定有与该电池模块中 对应的所述单体电芯相连接的正极输出并联载流片和负极输出并联载流片。
[0017] 在本申请的一些优选实施例中， 所述第一中间并联载流片与对应的所述单体电 芯间的连接方式为接触连接， 所述第二中间并联载流片与对应的所述单体电芯 间的连接方式为接触连接， 所述串联载流片与对应的所述单体电芯间的连接方 式为接触连接， 所述负极输出并联载流片与对应的所述单体电芯间的连接方式 为接触连接， 所述负极输出并联载流片与对应的所述单体电芯间的连接方式为 接触连接。
[0018] 在本申请的一些优选实施例中， 所述第一中间并联载流片、 第二中间并联载流 片、 串联载流片、 正极输出并联载流片和负极输出并联载流片均是通过结构胶 加螺丝锁紧的方式固定连接在对应的所述左电池固定架或右电池固定架上的。
[0019] 在本申请的一些优选实施例中， 处于最左端的那个电池模块， 其左电池固定架 的左侧还通过螺丝锁紧固定有罩在所述串联载流片外的左载流片绝缘固定板； 处于最右端的那个电池模块， 其右电池固定架的右侧还通过螺丝固定有罩在所 述正极输出并联载流片和负极输出并联载流片外的右载流片绝缘固定板。 [0020] 在本申请的一些优选实施例中， 所述左电池固定架和右电池固定架上成型有防 呆柱， 所述第一中间并联载流片、 第二中间并联载流片、 串联载流片、 正极输 出并联载流片、 负极输出并联载流片、 左载流片绝缘固定板和右载流片绝缘固 定板上成型有与所述防呆柱相适配的防呆孔。
[0021] 在本申请的一些优选实施例中， 所述左电池固定架、 右电池固定架、 第一中间 并联载流片、 第二中间并联载流片、 串联载流片、 正极输出并联载流片、 负极 输出并联载流片、 左载流片绝缘固定板和右载流片绝缘固定板上密布幵设贯穿 该圆柱形锂电池组的通风散热孔。
[0022] 在本申请的一些优选实施例中， 所述左电池固定架和所述右电池固定架上均制 有电芯插孔， 所述单体电芯的轴向两端分别插设在所述左电池固定架和右电池 固定架的所述电芯插孔中。
[0023] 在本申请的一些优选实施例中， 所述左电池固定架和所述右电池固定架上制有 相互配合的防呆柱和防呆孔。
[0024] 在本申请的一些优选实施例中， 该圆柱形锂电池组的顶部通过螺丝锁紧固定有
PCB板。
[0025] 在本申请的一些优选实施例中， 所述右电池支架上成型有用于绝缘隔离所述第 一中间并联载流片和第二中间并联载流片的绝缘隔离筋。
发明的有益效果
有益效果
[0026] 本申请的优势在于：
[0027] 1、 圆柱电池的成组， 现有方式都是使用带有圆形孔位的固定支架来做成组方 式。 孔位的尺寸公差以及电池直径的尺寸公差累加， 导致电池模组内部电池无 法完全固定， 电池模组内部电池无法完全固定的状态下， 存在产品使用过程中 焊点受力导致脱落。 而本申请采用螺丝锁紧固定的方式将各个电池固定架锁紧 固定在一起， 大大加强了单体电芯与电池固定架间的连接稳固度。
[0028] 2、 对电池组做冗余的成组结构， 电池与串并联载流片为接触式连接， 保证电 池包后续的运行维护降低难度。
[0029] 3、 对所有的电池串并联导电连接片做绝缘防护及连接防呆结构， 避免批量组 装生产吋出现操作失误状况， 降低组装生产吋出现的短路风险。
[0030] 4、 解决了单节电芯损坏以及集流导电板的安全保护功能失效吋无法维修问题
[0031] 5、 加强热管理的灵活性及可行性， 保证电池组在适宜的环境中工作， 增加电 池包的循环寿命。
[0032] 6、 走线槽可以对线材固定保护， 使电压采集温度采集信号线等能有序布置， 避免采集线信号线受电磁干扰。
[0033] 7、 电池模组正负极单边输出， 降低模组集成的导电连接难度。
对附图的简要说明
附图说明
[0034] 图 1为本申请实施例中圆柱形锂电池组的分解结构示意图；
[0035] 图 2为本申请实施例中圆柱形锂电池组的整体总装结构示意图；
[0036] 图 3为本申请实施例中圆柱形锂电池组的剖面结构示意图；
[0037] 图 4为本申请实施例中左电池固定架的结构示意图。
[0038] 其中： 1-左电池固定架， 2-右电池固定架， 3-单体电芯， 4-第一中间并联载流 片， 5-第二中间并联载流片， 6-串联载流片， 7-正极输出并联载流片， 8-负极输 出并联载流片， 9-左载流片绝缘固定板， 10-右载流片绝缘固定板， 11-PCB板， A-防呆柱， B-通风散热孔， C-暗扣通线槽, D-走线卡扣 ,Ε-温度线放置槽, F-插接口 ， G-防呆孔， Η-正极输出， I-负极输出， J-绝缘隔离筋。
实施该发明的最佳实施例
本发明的最佳实施方式
[0039] 在此处键入本发明的最佳实施方式描述段落。
本发明的实施方式
[0040] 下面通过具体实施方式结合附图对本申请作进一步详细说明。 本申请可以以多 种不同的形式来实现， 并不限于本实施例所描述的实施方式。 提供以下具体实 施方式的目的是便于对本申请公幵内容更清楚透彻的理解， 其中上、 下、 左、 右等指示方位的字词仅是针对所示结构在对应附图中位置而言。
[0041] 然而， 本领域的技术人员可能会意识到其中的一个或多个的具体细节描述可以 被省略， 或者还可以采用其他的方法、 组件或材料。 在一些例子中， 一些实施 方式并没有描述或没有详细的描述。
[0042] 此外， 本文中记载的技术特征、 技术方案还可以在一个或多个实施例中以任意 合适的方式组合。 对于本领域的技术人员来说， 易于理解与本文提供的实施例 有关的方法的步骤或操作顺序还可以改变。 因此， 附图和实施例中的任何顺序 仅仅用于说明用途， 并不暗示要求按照一定的顺序， 除非明确说明要求按照某
[0043] 本文中为部件所编序号本身， 例如"第一"、 "第二 "等， 仅用于区分所描述的对 象， 不具有任何顺序或技术含义。 而本申请所说 "连接"、 "联接"， 如无特别说明 ， 均包括直接和间接连接 （联接） 。
[0044]
[0045] 图 1至图 4示出了本申请这种圆柱形锂电池组的一个优选实施例， 与传统圆柱形 锂电池组相同的是， 其也包括沿直线方向自左向右依次相连的多个电池模块， 电池模块的数量可根据功率和容量需求而灵活设定， 一般至少为两个， 本实施 例具体为 4个。
[0046] 本实施例的关键改进在于：
[0047] 每个电池模块均包括：绝缘材质的左电池固定架 1,绝缘材质的右电池固定架 2,布 置于左电池固定架 1和右电池固定架 2之间的电芯层， 以及将左电池固定架 1和右 电池固定架 2锁紧固定在一起的锁紧螺丝。 不难理解， 左电池固定架 1和右电池 固定架 2通过锁紧螺丝锁紧固定在一起后， 大大提高了左电池固定架 1、 右电池 固定架 2和单体电芯 3之间的连接稳定度。 前述电芯层由多颗平行分布的圆柱形 的单体电芯 3组成， 每颗单体电芯 3的轴线左右延伸布置， 每个电芯层中单体电 芯 3的具体数量可根据功率和容量需求而灵活设定。
[0048] 前述锁紧螺丝将左电池固定架 1和右电池固定架 2沿着单体电芯 3的轴线方向锁 紧固定在一起， 如此将各颗单体电芯 3轴向夹紧在左电池固定架 1和右电池固定 架 2之间， 防止单体电芯 3脱幵， 增强该电池组的结构稳固性。 [0049] 在任意相邻的两个电池模块中， 处于左侧的那个电池模块的右电池固定架 2和 处于右侧的那个电池模块的左电池固定架 1紧挨布置， 并且二者 （"二者"分别指 前述任意相邻的两个电池模块中处于左侧的那个电池模块的右电池固定架 2和处 于右侧的那个电池模块的左电池固定架 1) 通过螺丝锁紧固定,同吋二者 （"二者" 分别指前述任意相邻的两个电池模块中处于左侧的那个电池模块的右电池固定 架 2和处于右侧的那个电池模块的左电池固定架 1) 之间夹设有与对应的单体电 芯 3相连接的第一中间并联载流片 4和第二中间并联载流片 5， 第一中间并联载流 片 4和第二中间并联载流片 5绝缘隔离。 而且， 对应的右电池支架 2上成型有绝缘 隔离筋 J， 该绝缘隔离筋 J将第一中间并联载流片 4和第二中间并联载流片 5相互隔 幵， 降低组装生产吋出现的短路风险 （最右端电池模块的右电池支架 2上也成型 有绝缘隔离筋 J， 以用于绝缘隔离下述正极输出并联载流片 7和负极输出并联载流 片 8) 。
[0050] 具体地， 每个电芯层中的各颗单体电芯 3可分为两组， 一般这两组单体电芯 3的 电芯数量相等， 而且这两组单体电芯 3分布方向相反一其中一组正极朝左、 负 极朝右布置， 另一组负极朝左、 正极朝右布置。 上述第一中间并联载流片 4和第 二中间并联载流片 5分别与这两组单体电芯 3相连接。
[0051] 处于最左端的那个电池模块， 其左电池固定架 1的左侧部固定有与该电池模块 中所述单体电芯 3相连接的串联载流片 6。 而处于最右端的那个电池模块， 其右 电池固定架 2的右侧部固定有该电池模块中对应的所述单体电芯 3相连接的正极 输出并联载流片 7和负极输出并联载流片 8。
[0052] 这里所说的"最左端 "和"最右端"， 是指在这些沿着直线方向自左向右依次分布 的所有电池模块中， 处于左右两端部的那两个电池模块。
[0053] 在本实施中， 第一中间并联载流片 4与对应的单体电芯 3间的连接方式为接触连 接， 而非传统的焊接连接。 第二中间并联载流片 5与对应的单体电芯 3间的连接 方式为接触连接， 而非传统的焊接连接。 串联载流片 6与对应的单体电芯 3间的 连接方式为接触连接， 而非传统的焊接连接。 正极输出并联载流片 7与对应的单 体电芯 3间的连接方式为接触连接， 而非传统的焊接连接。 负极输出并联载流片 8与对应的单体电芯 3间的连接方式为接触连接， 而非传统的焊接连接。 前述各 部件 （即第一中间并联载流片 4、 第二中间并联载流片 5、 串联载流片 6、 正极输 出并联载流片 7和负极输出并联载流片 8) 与单体电芯采用接触紧压的连接方式 ， 可避免成组导电焊接过程中导致的电芯损坏， 而且能够降低电池组的组装难 度， 提高批量化生产效率。
[0054] 为了保证上述部件与单体电芯之间接触连接的稳定性， 将上述第一中间并联载 流片 4、 第二中间并联载流片 5、 串联载流片 6、 正极输出并联载流片 7和负极输 出并联载流片 8均采用结构胶加螺丝锁紧的方式固定连接在对应的左电池固定架 1或右电池固定架 2上。 对载流导电片与电池支架的装配用结构胶与螺丝锁紧固 定， 在保证应力分散与足够强度的状态下， 利用紧压式的方法对电池组的串并 联做导电连接， 可以避免焊接过程中对电芯损坏。
[0055] 具体来说， 参照图 1所示， 第一中间并联载流片 4和第二中间并联载流片 5均通 过结构胶加螺丝锁紧的方式固定连接在对应的右电池固定架 2上， 而且是非端部 电池模块的右电池固定架 2上。 串联载流片 6通过结构胶加螺丝锁紧的方式固定 连接在最左端电池模块的左电池固定架 1上。 正极输出并联载流片 7和负极输出 并联载流片 8通过结构胶加螺丝锁紧的方式固定连接在最右端电池模块的右电池 固定架 2上。
[0056] 该电池组的正极输出并联载流片 7和负极输出并联载流片 8布置于同一侧， 正负 极单边输出， 降低了电池模组集成的导电连接难度。
[0057] 为了防止导电材质的上述串联载流片 6、 正极输出并联载流片 7和负极输出并联 载流片 8直接裸露在电池组侧部， 同吋为了进一步提高串联载流片 6、 正极输出 并联载流片 7及负极输出并联载流片 8与对应左电池固定架 1或右电池固定架 2的 连接稳固性， 该锂电池组还设置了左载流片绝缘固定板 9和右载流片绝缘固定板 10。 其中， 左载流片绝缘固定板 9通过螺丝锁紧固定在最左端电池模块的左电池 固定架 1的左侧， 并且该左载流片绝缘固定板 9将上述串联载流片 6罩于其内， 即 串联载流片 6被夹在左载流片绝缘固定板 9和最左端电池模块的左电池固定架 1之 间。 右载流片绝缘固定板 10通过螺丝锁紧固定在最右端电池模块的右电池固定 架 2的右侧， 并且该右载流片绝缘固定板 10将上述正极输出并联载流片 7和负极 输出并联载流片 8罩于其内， 即正极输出并联载流片 7和负极输出并联载流片 8被 夹在右载流片绝缘固定板 10和最右端电池模块的右电池固定架 2之间。
[0058] 不难看出， 左载流片绝缘固定板 9和右载流片绝缘固定板 10对串联载流片 6、 正 极输出并联载流片 7和负极输出并联载流片 8起到绝缘防护功能。
[0059] 用于连接上述串联载流片 6和对应左电池固定架 1 (最左端电池模块的左电池固 定架 1) 的螺丝、 用于连接上述左载流片绝缘固定板 9和对应左电池固定架 1 (最 左端电池模块的左电池固定架 1) 的螺丝， 可以是同一组螺丝， 也可以采用两组 不同的螺丝。 具体在本实施了中， 采用了两组不同的螺丝， 装配吋， 先利用第 一组螺丝加结构胶将串联载流片 6与对应左电池固定架 1连接固定， 再利用第二 组螺丝将左载流片绝缘固定板 9和对应左电池固定架 1连接固定， 从而将串联载 流片 6紧压在对应左电池固定架 1上。
[0060] 为了方便上述第一中间并联载流片 4、 第二中间并联载流片 5、 串联载流片 6、 正极输出并联载流片 7、 负极输出并联载流片 8、 左载流片绝缘固定板 9和右载流 片绝缘固定板 10在左电池固定架 1或右电池固定架 2上的安装， 本实施例在左电 池固定架 1和右电池固定架 2上成型有多个防呆柱 A， 第一中间并联载流片 4、 第 二中间并联载流片 5、 串联载流片 6、 正极输出并联载流片 7、 负极输出并联载流 片 8、 左载流片绝缘固定板 9和右载流片绝缘固定板 10上设置有与所述防呆柱 A适 配的防呆孔 G。 第一中间并联载流片 4、 第二中间并联载流片 5、 串联载流片 6、 正极输出并联载流片 7、 负极输出并联载流片 8、 左载流片绝缘固定板 9、 右载流 片绝缘固定板 10在与左电池固定架 1或右电池固定架 2的装配过程中， 先将其防 呆孔 G穿套在相应的防呆柱 A上， 从而对其装配位置进行预定位， 再利用螺丝锁 紧固定。
[0061] 防呆柱和防呆孔的结构设计， 可对载流导电板与电池支架 （即上述的左、 右电 池固定架 2) 的安装减少操作失误， 提高效率。
[0062] 此外， 为了提高该电池组的散热性能， 本实施例在上述左电池固定架 1、 右电 池固定架 2、 第一中间并联载流片 4、 第二中间并联载流片 5、 串联载流片 6、 正 极输出并联载流片 7、 负极输出并联载流片 8、 左载流片绝缘固定板 9和右载流片 绝缘固定板 10上均密布幵设通风散热孔 B， 并且这些部件上的通风散热孔 B相互 连通， 整体自作向右贯穿该圆柱形锂电池组， 我们称之为贯通式散热孔。 [0063] 贯通式的通风散热孔对每个单体电芯的散热提供通风通道， 加强热管理的灵活 性及可行性， 保证电池组在适宜的环境中工作， 增加电池包的循环寿命。
[0064] 为了进一步提高该电池组的散热能力， 本实施例对上述通风散热孔 B的结构做 了进一步优化： 左电池固定架 1、 右电池固定架 2、 第一中间并联载流片 4、 第二 中间并联载流片 5、 串联载流片 6、 正极输出并联载流片 7、 负极输出并联载流片 8、 左载流片绝缘固定板 9和右载流片绝缘固定板 10上幵设的通风散热孔 B沿直线 贯穿该圆柱形锂电池组， 如此可减小散热风流在流通通风散热孔 B吋的阻力， 提 高散热风流的流速。
[0065] 而且， 左、 右电池固定架上的通风散热孔与其上的电芯插孔错位布置， 如此可 防止插入单体电芯后电芯端部将通风散热孔堵住。 进一步地， 左、 右电池固定 架上的通风散热孔布置在其上的相邻四个电芯插孔之间的中心位置， 如此既方 便风流在左、 右电池固定架上的对穿流通， 又能保证左、 右电池固定架的结构 强度不至于因幵设较多的电芯插孔和通风散热孔而显著降低。
[0066] 本实施例中， 第一中间并联载流片 4、 第二中间并联载流片 5、 串联载流片 6、 正极输出并联载流片 7、 负极输出并联载流片 8、 左载流片绝缘固定板 9和右载流 片绝缘固定板 10均垂直于单体电芯 3布置。
[0067] 显然， 在本实施例中， 该电池组的电池固定架包括四个左电池固定架 1和四个 右电池固定架 2。 该电池组的串联载流片包括三个第一中间并联载流片 4、 三个 第二中间并联载流片 5、 一个正极输出并联载流片 7和一个负极输出并联载流片 8 。 该电池组的串联载流片为一个一图 1中的串联载流片 6， 载流片绝缘固定板 有两个， 分别为左载流片绝缘固定板 9和右载流片绝缘固定板 10。 在具体实施吋 ， 本领域技术人员可根据实际需求而灵活设计该电池组上电池固定架、 串联载 流片、 并联载流片及载流片绝缘固定板的数量和结构， 而若想提高电池组的散 热性能， 一般建议在这些电池固定架、 串联载流片、 并联载流片及载流片绝缘 固定板上幵设贯穿电池组的通风散热孔。
[0068] 为了进一步提高单体电芯 3与左电池固定架 1和右电池固定架 2间的连接稳定性 ， 防止单体电芯 3从左电池固定架 1或右电池固定架 2脱离， 同吋为了方便单体电 芯 3在左电池固定架 1和右电池固定架 2上的安装， 本实施在所述左电池固定架 1 和右电池固定架 2上均制有电芯插孔， 单体电芯 3的轴向两端分别插设在左电池 固定架 1和右电池固定架 2的电芯插孔中。 左电池固定架 1和右电池固定架 2上电 芯插孔处标有正负极标识。
[0069] 而且， 为了方便相邻两电池模块的连接固定， 本实施在各个电池模块的左电池 固定架 1和右电池固定架 2上制有相互配合的防呆柱和防呆孔。 装配吋， 先将防 呆柱和防呆孔相互对准插接， 实现左电池固定架 1与右电池固定架 2的预定位， 再利用螺丝将二者锁紧固定。
[0070] 为了便于在该电池组侧部安装相应的电气附件,本实施了在各个左电池固定架 1 和右电池固定架 2的外缘边上幵设有与单体电芯 3轴线相垂直的螺丝孔，以利用锁 入该螺丝孔中的螺丝来连接相应的电气附件,比如图 1中的 PCB板 11， PCB板 11上 设置有相应的插接口 F。 而且相应的左电池固定架 1和右电池固定架 2上设置有暗 扣通线槽。、 走线卡扣 D和温度线放置槽 该电池组的采集线、 温度线通过前 述暗扣通线槽 C、 走线卡扣 D和温度线放置槽 E引出至该电池组的一侧， 并与所 述 PCB板 11上对应的插接口 F对接。
[0071] 再结合图 1-图 3所示， 现将本实施例这种圆柱形锂电池组的整体装配过程简单 介绍如下：
[0072] a.首先将串联载流片 6配合最左端电池模块上左电池固定架 1上对应的防呆柱装 至该左电池支架 1上， 再利用结构胶加螺丝将二者锁紧固定。 将左载流片绝缘固 定板 9配合最左端电池模块上左电池固定架 1上对应的防呆柱装至该左电池支架 1 上， 再用螺丝将二者锁紧固定。 构成结构件一。
[0073] b.之后将第一中间并联载流片 4和第二中间并联载流片 5配合相应右电池固定架 2 上对应的防呆柱装至该右电池固定架 2上， 并利用结构胶加螺丝将三者锁紧固定 。 将相应左电池支架 1配合相应右电池支架 2 (这里的右电池支架 2和左电池支架 1分别属于不同的两个电池模块） 上对应的防呆柱装至该右电池支架 2， 并利用 结构胶加螺丝将二者锁紧固定。 构成结构件二。 而且本实施例一共有三个该构 成结构件二。
[0074] c.之后将正极输出并联载流片 7和负极输出并联载流片 8配合最右端电池模块上 右电池固定架 2上对应的防呆柱装至该右电池固定架 2上， 再利用结构胶加螺丝 将三者锁紧固定。 将右载流片绝缘固定板 10配合最右端电池模块上右电池固定 架 2上对应的防呆柱装至该右电池固定架 2上， 再用螺丝将二者锁紧固定。 构成 结构件三。
[0075] d.之后在上述结构件一的左电池固定架 1的电芯插孔中插装第一组单体电芯 3。
将该第一组单体电芯 3的裸露端 （即还未插入电芯插孔中的裸露端） 插入第一个 结构件二的右电池固定架 2的电芯插孔中， 并将结构件一的左电池固定架 1和第 一个结构件二的右电池固定架 2用螺丝锁紧固定。 在该第一个结构件二的左电池 固定架 1的电芯插孔中插装第二组单体电芯 3， 将该第二组单体电芯 3的裸露端插 入第二个结构件二的右电池固定架 2的电芯插孔中， 并将第一个结构件二的左电 池固定架 1和第二个结构件二的右电池固定架 2用螺丝锁紧固定。 在该第二个结 构件二的左电池固定架 1的电芯插孔中插装第三组单体电芯 3， 将该第三组单体 电芯 3的裸露端插入第三个结构件二的右电池固定架 2的电芯插孔中， 并将第二 个结构件二的左电池固定架 1和第三个结构件二的右电池固定架 2用螺丝锁紧固 定。 在该第三个结构件二的左电池固定架 1的电芯插孔中插装第四组单体电芯 3
[0076] e.将第四组单体电芯 3的裸露端插入结构件三的右电池固定架 2的电芯插孔中，并 将第三个结构件二的左电池固定架 1和结构件三的右电池固定架 2用螺丝锁紧固 定。 再装上 PCB板 11等附件。
[0077] 本文所说的"左"、 "右"， 均以图 1为参照。
[0078] 以上内容是结合具体的实施方式对本申请所作的进一步详细说明， 不能认定本 申请的具体实施只局限于这些说明。 对于本申请所属技术领域的普通技术人员 来说， 在不脱离本申请构思的前提下， 还可以做出若干简单推演或替换。

Claims

权利要求书
[权利要求 1] 一种圆柱形锂电池组，包括沿直线方向自左向右依次相连的至少两个 电池模块,其特征在于，
每个所述电池模块均包括：
绝缘材质的左电池固定架 (1),
绝缘材质的右电池固定架 (2),
布置于所述左电池固定架 (1)和所述右电池固定架 (2)之间的电芯层， 所述电芯层由若干颗平行分布的单体电芯 (3) 组成， 并且所述单体电 芯 (3) 的轴线左右延伸布置， 以及
将所述左电池固定架 (1)和所述右电池固定架 (2)沿着所述单体电芯 (3 ) 的轴线方向锁紧固定在一起的锁紧螺丝；
在任意相邻的两个所述电池模块中， 处于左侧的那个电池模块的右电 池固定架 (2)和处于右侧的那个电池模块的左电池固定架 (1)通过螺丝 锁紧固定,并且二者之间夹设有与对应的所述单体电芯 (3) 相连接的第 一中间并联载流片 （4) 和第二中间并联载流片 （5) ， 所述第一中间 并联载流片 （4) 和第二中间并联载流片 （5) 绝缘隔离；
处于最左端的那个电池模块， 其左电池固定架 (1)的左侧部固定有与 该电池模块中所述单体电芯 (3) 相连接的串联载流片 （6) ； 处于最右端的那个电池模块， 其右电池固定架 (2)的右侧部固定有与 该电池模块中对应的所述单体电芯 (3) 相连接的正极输出并联载流片 (7) 和负极输出并联载流片 （8) 。
[权利要求 2] 根据权利要求 1所述的圆柱形锂电池组,其特征在于， 所述第一中间并 联载流片 （4) 与对应的所述单体电芯 (3) 间的连接方式为接触连接 ， 所述第二中间并联载流片 （5) 与对应的所述单体电芯 (3) 间的连 接方式为接触连接， 所述串联载流片 （6) 与对应的所述单体电芯 (3 ) 间的连接方式为接触连接， 所述正极输出并联载流片 （7) 与对应 的所述单体电芯 (3) 间的连接方式为接触连接， 所述负极输出并联载 流片 （8) 与对应的所述单体电芯 (3) 间的连接方式为接触连接。
[权利要求 3] 根据权利要求 2所述的圆柱形锂电池组,其特征在于， 所述第一中间并 联载流片 （4) 、 第二中间并联载流片 （5) 、 串联载流片 （6) 、 正 极输出并联载流片 （7) 和负极输出并联载流片 （8) 均是通过结构胶 加螺丝锁紧的方式固定连接在对应的所述左电池固定架 (1)或右电池 固定架 (2)上的。
[权利要求 4] 根据权利要求 3所述的圆柱形锂电池组,其特征在于， 处于最左端的那 个电池模块， 其左电池固定架 (1)的左侧还通过螺丝锁紧固定有罩在 所述串联载流片 （6) 外的左载流片绝缘固定板 （9) ； 处于最右端的 那个电池模块， 其右电池固定架 (2)的右侧还通过螺丝固定有罩在所 述正极输出并联载流片 （7) 和负极输出并联载流片 （8) 外的右载流 片绝缘固定板 （10) 。
[权利要求 5] 根据权利要求 4所述的圆柱形锂电池组,其特征在于， 所述左电池固定 架 (1)和右电池固定架 (2)上成型有防呆柱 （A) ， 所述第一中间并联载 流片 （4) 、 第二中间并联载流片 （5) 、 串联载流片 （6) 、 正极输 出并联载流片 （7) 、 负极输出并联载流片 （8) 、 左载流片绝缘固定 板 （9) 和右载流片绝缘固定板 （10) 上成型有与所述防呆柱 （A) 相适配的防呆孔 （G) 。
[权利要求 6] 根据权利要求 4所述的圆柱形锂电池组,其特征在于， 所述左电池固定 架 (1)、 右电池固定架 (2)、 第一中间并联载流片 （4) 、 第二中间并联 载流片 （5) 、 串联载流片 （6) 、 正极输出并联载流片 （7) 、 负极 输出并联载流片 （8) 、 左载流片绝缘固定板 （9) 和右载流片绝缘固 定板 （10) 上密布幵设贯穿该圆柱形锂电池组的通风散热孔 （B) 。
[权利要求 7] 根据权利要求 1所述的圆柱形锂电池组,其特征在于， 所述左电池固定 架 (1)和所述右电池固定架 (2)上均制有电芯插孔， 所述单体电芯 (3) 的轴向两端分别插设在所述左电池固定架 (1)和右电池固定架 (2)的所 述电芯插孔中。
[权利要求 8] 根据权利要求 1所述的圆柱形锂电池组,其特征在于,所述左电池固定架
(1)和所述右电池固定架 (2)上制有相互配合的防呆柱和防呆孔。
[权利要求 9] 根据权利要求 1所述的圆柱形锂电池组,其特征在于,该圆柱形锂电池组 的顶部通过螺丝锁紧固定有 PCB板 （11) 。
[权利要求 10] 根据权利要求 1所述的圆柱形锂电池组,其特征在于,所述右电池支架
(2) 上成型有用于绝缘隔离所述第一中间并联载流片 （4) 和第二中 间并联载流片 （5) 的绝缘隔离筋 （J) 。
PCT/CN2017/076207 2017-03-09 2017-03-09 圆柱形锂电池组 Ceased WO2018161324A1 (zh)

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