CN115632207A - Battery module, energy storage equipment and consumer - Google Patents

Battery module, energy storage equipment and consumer Download PDF

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Publication number
CN115632207A
CN115632207A CN202211376983.XA CN202211376983A CN115632207A CN 115632207 A CN115632207 A CN 115632207A CN 202211376983 A CN202211376983 A CN 202211376983A CN 115632207 A CN115632207 A CN 115632207A
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CN
China
Prior art keywords
end plate
battery module
fastening
battery
fastening member
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.)
Withdrawn
Application number
CN202211376983.XA
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Chinese (zh)
Inventor
马亚强
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.)
Xiamen Hithium Energy Storage Technology Co Ltd
Original Assignee
Xiamen Hithium Energy Storage 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 Xiamen Hithium Energy Storage Technology Co Ltd filed Critical Xiamen Hithium Energy Storage Technology Co Ltd
Priority to CN202211376983.XA priority Critical patent/CN115632207A/en
Publication of CN115632207A publication Critical patent/CN115632207A/en
Withdrawn legal-status Critical Current

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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
    • H01M50/262—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
    • H01M50/204—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
    • H01M50/244—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
    • H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
    • 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

Abstract

The invention relates to a battery module, energy storage equipment and electric equipment. The battery module includes a plurality of batteries and box, and the box is used for acceping a plurality of the battery, the box includes: the first end plate, the second end plate, the first fastening assembly and the second fastening assembly; the second end plate and the first end plate are arranged at intervals; the plurality of batteries are arranged between the first end plate and the second end plate, each battery is provided with a first surface and a second surface which are arranged oppositely along a first direction, the first surface faces the first end plate, the second surface faces the second end plate, and the first direction is the thickness direction of the battery; the first fastening assembly is arranged on the same side of the first end plate and the second end plate and detachably fixes the first end plate and the second end plate respectively; the second fastening assembly is positioned on the other side of the first end plate and the second end plate, which is away from the first fastening assembly, and the first end plate and the second end plate are detachably fixed respectively. The battery module is good in battery fixing effect and low in production cost.

Description

Battery module, energy storage equipment and consumer
Technical Field
The application relates to the technical field of batteries, in particular to a battery module, energy storage equipment and electric equipment.
Background
In the current energy storage technology field, the power generation cost is lower than the energy storage cost, and the development of energy storage equipment is limited. When power is generated in a rich water period, the electric quantity provided by the power generation side exceeds the electric quantity demand of the user side, and if a large amount of energy storage equipment is lacked to store redundant electric quantity, the redundant electric quantity can only be discarded; at the peak period of power utilization, the power generation side can not meet the power demand of the user side, and if a large amount of energy storage equipment is lacked to assist the power generation side to supply power to the user side, the power grid can be subjected to larger pressure. Therefore, efforts are made to reduce energy storage costs.
In order to reduce the energy storage cost, the battery can be fixed by only adopting structural adhesive, although the energy storage cost is reduced by the scheme, the battery in the obtained battery module can not be disassembled, the subsequent maintenance cost is high, and the maintenance difficulty is large.
Disclosure of Invention
In view of this, the present application provides a battery module, an energy storage device and a power consumption device. The battery module simplifies the structural member while ensuring the fixing effect of the battery, and reduces the production cost of the battery module.
The application provides a battery module, a plurality of batteries of battery module and box, the box is used for acceping a plurality of the battery, the box includes: the first end plate, the second end plate, the first fastening assembly and the second fastening assembly; the second end plate and the first end plate are arranged at intervals; the plurality of cells are arranged between the first end plate and the second end plate, each cell is provided with a first surface and a second surface which are arranged along a first direction in an opposite way, the first surface faces the first end plate, the second surface faces the second end plate, and the first direction is the thickness direction of the cell; the first fastening assembly is arranged on the same side of the first end plate and the second end plate and detachably fixes the first end plate and the second end plate respectively; the second fastening assembly is located on the other side, away from the first fastening assembly, of the first end plate and the second end plate, and the first end plate and the second end plate are detachably fixed respectively.
In the battery module that this application provided, first fastening components reaches second fastening components will first end plate reaches the second end plate is connected to enclose synthetic box, the box is used for acceping a plurality of batteries, the box physical stamina has certain restriction effect to the inflation of battery, and is right a plurality of batteries have better fixed effect. In addition, first fastening components can be dismantled fixedly first end plate reaches the second end plate, second fastening components can be dismantled fixedly first end plate reaches the second end plate, and the follow-up maintenance and the dismantlement of being convenient for have reduced the maintenance cost. Moreover, for totally enclosed battery module, required structure is less in the battery module of this application, has alleviateed battery module's weight and has reduced the manufacturing cost of structure, and then has reduced battery module's manufacturing cost.
Further, the first end plate is provided with a plurality of first hollow-out parts arranged at intervals, and the second end plate is provided with a plurality of second hollow-out parts arranged at intervals.
In the battery module that this application provided, a plurality of first fretwork portions have improved the radiating effect of first end plate, a plurality of second fretwork portions have improved the radiating effect of second end plate is favorable to distributing away the heat that battery produced at the during operation in the battery module. In addition, the first hollow-out part and the second hollow-out part that the interval set up have played the effect of strengthening rib, have improved the intensity of first end plate reaches the intensity of second end plate. Furthermore, a plurality of first fretwork portions are favorable to alleviateing the weight of first end plate, a plurality of second fretwork portions are favorable to alleviateing the weight of second end plate, and then have alleviateed battery module's weight, are favorable to realizing battery module's lightweight design.
Further, the plurality of first hollow parts are arranged in an array manner or the first end plate is of a honeycomb structure; the second hollow parts are arranged in an array mode or the second end plate is of a honeycomb structure.
In the battery module that this application provided, a plurality of first fretwork portions that the array was arranged are favorable to making first end plate intensity in all directions is more homogeneous, and a plurality of second fretwork portions that the array was arranged are favorable to making second end plate intensity in all directions is more homogeneous, thereby improves first end plate reaches the bulk strength of second end plate. In the battery module of this application, it is a plurality of when the battery takes place the inflation in the charge-discharge process, first end plate reaches second end plate intensity is bigger, and is right the fixed of battery and restriction inflation's effect is stronger.
Further, at least one of the first and second fastening components comprises: and the two opposite ends of each fastener are detachably fixed on the first end plate and the second end plate respectively.
In the battery module that this application provided, a plurality of fasteners are favorable to better with first end plate reaches the second end plate is connected, improves connection stability, can be better with a plurality of batteries are injectd in the box. When at least one in first fastening components and the second fastening components includes the fastener, for totally enclosed battery module, required structure is less in the battery module of this application, has lightened battery module's weight and has reduced the manufacturing cost of structural component, and then has reduced battery module's manufacturing cost. Furthermore, the fasteners are detachably fixed with the first end plate and the second end plate, so that subsequent maintenance and disassembly are facilitated, and the maintenance cost is reduced.
Further, the plurality of fasteners are arranged at intervals in sequence along a second direction, wherein the second direction is the extending direction of the first end plate or the extending direction of the second end plate.
In the embodiment of this application, a plurality of fasteners are followed the long edge direction of first end plate or the long edge direction of second end plate interval in proper order arranges, the equipment mode of a plurality of fasteners is simple, and is favorable to dismantling, has reduced the assembly cost and the maintenance cost of battery module.
Further, the length of the first end plate or the second end plate in a third direction is L1, the distance between any two adjacent fasteners is L2, 0.9L1 is not less than L2 and not less than 1.1L1 is satisfied, the third direction is perpendicular to the second direction, and the third direction is perpendicular to the thickness direction of the first end plate or the second end plate.
In the embodiment of the application, when distance L2 between any two adjacent fasteners satisfies 0.9L1 and is not less than L2 and not more than 1.1L1, along distance L2 between two adjacent fasteners that the second direction was arranged at intervals in proper order is in reasonable scope, and is a plurality of when the battery takes place the inflation in the charge-discharge process, the box atress is more even, is favorable to strengthening the fixed action and the limiting displacement to the battery. When the value of the distance L2 between any two adjacent fasteners is larger than 1.1L1, the distance between the adjacent fasteners is too large, the fixing effect of the box body on the battery is weakened, and the overall stability of the battery module is reduced; when the value of the distance L2 between any two adjacent fasteners is less than 0.9L1, the distance between the adjacent fasteners is too small, which can further enhance the fixing effect on the battery, but increases the production cost and the process cost.
Furthermore, each fastener comprises a first fixing part, a connecting part and a second fixing part which are sequentially bent and connected, and the first fixing part and the second fixing part are positioned on the same side of the connecting part; the first fixing part is detachably fixed on the first end plate, and the second fixing part is detachably fixed on the second end plate.
In the fastener that this application provided, first fixed part, connecting portion and second fixed part buckle in proper order and link to each other, form "U" type structure, in other words, the fastener is "U" type structure. The scheme of the fastener of U type structure is adopted, the fastener with first end plate reaches the second end plate has bigger area of contact, when the battery is at the volume emergence inflation of charge-discharge in-process and when producing the extrusion force to the box, it is bigger to sticis a lifting surface area, is more difficult for leading to stress concentration, makes the fastener is difficult for splitting.
Further, the first end plate is provided with a third surface and a fourth surface which are connected in a bent mode, the third surface faces away from the battery, the fourth surface faces the fastener, and the first fixing portion is provided with a first through hole; the first end plate is also provided with a first through hole and a first through groove which are communicated, the first through hole penetrates through the third surface, and the first through groove penetrates through the fourth surface; the first fixing part penetrates through the first through groove; the battery module further comprises a first locking piece, the first locking piece sequentially penetrates through the first through hole and the first penetrating hole, and the first fixing portion is detachably fixed on the first end plate. The second end plate is provided with a fifth surface and a sixth surface which are connected in a bending mode, the fifth surface is away from the battery, the sixth surface faces the fastener, and the second fixing portion is provided with a second through hole; the second end plate is also provided with a second through hole and a second through groove which are communicated, the second through hole penetrates through the fifth surface, and the second through groove penetrates through the sixth surface; the second fixing part penetrates through the second through groove; the battery module further comprises a second locking piece, the second locking piece sequentially penetrates through the second through hole and the second penetrating hole, and the second fixing portion is detachably fixed on the second end plate.
The fastener provided by the application is of a U-shaped structure, the first fixing part is inserted into the first end plate through the first through groove and is fixed on the first end plate through the first locking part; the second fixing part is inserted into the second end plate through the second through groove and fixed on the second end plate through the second locking piece. The fastening piece is fixedly connected to the third surface of the first end plate and the fifth surface of the second end plate, and the first locking piece can be arranged in the thickness direction of the first end plate by virtue of the thickness of the first end plate, so that the height of one side of the third surface in the first end plate is not required to be occupied, and the height of one side of the fourth surface in the first end plate is not required to be occupied; the second locking piece can just set up in with the help of the thickness of second end plate thickness direction is last, need not to occupy the height of fifth surface one side in the second end plate, also need not to occupy the height of sixth surface one side, has practiced thrift more high spaces, is favorable to piling up of a plurality of battery module, improves the space utilization and the steadiness that battery module piled up.
Furthermore, the plurality of fastening pieces of the first fastening assembly are sequentially bent and connected; the plurality of fasteners of the second fastening assembly are sequentially bent and connected.
The utility model provides a both ends that carry on the back of the body of fastener all are fixed in first end plate or on the second end plate, the junction of two adjacent fasteners is fixed in through at least one kind in screw, screw rod and the rivet first end plate or on the second end plate, the fastener that this application provided is buckled in proper order and is linked to each other, a plurality of fasteners with form the triangle-shaped that a plurality of stability are higher between first end plate, the second end plate, improved the fastener with joint strength between first end plate, the second end plate has improved then the stability of box. When the batteries expand in the charging and discharging process, the box body has better effects of fixing the batteries and limiting the expansion.
Furthermore, at least one of the first fastening assembly and the second fastening assembly comprises a first fastening piece, a second fastening piece, a third fastening piece and a fourth fastening piece, and the first fastening piece, the second fastening piece, the third fastening piece and the fourth fastening piece are sequentially bent and connected to form an integral structure.
In the battery module that this application provided, first fastener, second fastener, third fastener and fourth fastener with form the higher triangle-shaped of a plurality of stability between first end plate and the second end plate, improved the fastener with joint strength between first end plate, the second end plate has improved then the box is right the fastening action and the limiting displacement of a plurality of batteries.
Further, in the present application, the box body further includes a plurality of limiting members, and the limiting members are arranged along an extending direction of the fastening member, and disposed between two adjacent batteries, so as to enable the two adjacent batteries to be disposed at intervals; the limiting pieces are in limiting fit with the fasteners so as to limit the positions of the limiting pieces.
In the battery module that this application provided, a plurality of locating parts with the spacing cooperation of fastener, the locating part is used for the restriction the position of battery makes adjacent two the battery interval sets up, the fastener supports holds the locating part is used for injecing the position of locating part has improved right the fixed action and the limiting displacement of battery.
Furthermore, the plurality of limiting pieces are arranged on the surface of the fastening piece facing the battery at intervals, and the plurality of limiting pieces and the fastening piece are of an integral structure; or, the limiting part is clamped on the fastening part, so that the limiting part is in limiting fit with the fastening part.
The integral structure of the limiting part and the fastening part is favorable for strengthening the fixing effect on the battery. The locating part and the fastener are of split structures, the locating part is connected with the fastener in a clamped mode, and when the locating part and the fastener are of the split structures, the battery module is low in assembly difficulty, high in assembly flexibility and low in production difficulty of the fastener, and production cost of the battery module is reduced.
Further, the battery module still includes the PLASTIC LAMINATED, the PLASTIC LAMINATED set up in first fastening component deviates from one side of a plurality of batteries, and connect first fastener.
In the battery module that this application provided first fastening components deviates from one side of a plurality of batteries sets up the PLASTIC LAMINATED, works as like this when battery module takes place thermal runaway, the PLASTIC LAMINATED can prevent that the intensity of a fire from stretching. When a plurality of battery module stack, if one of them battery module takes place thermal runaway, the PLASTIC LAMINATED can prevent that the intensity of a fire from stretching the normal work that influences other battery modules, the PLASTIC LAMINATED is favorable to improving the security performance of battery module.
Furthermore, the box body further comprises a first cover plate and a second cover plate which are arranged along a second direction in an opposite manner, and the first cover plate is respectively connected with the first end plate and the second end plate; the second cover plate is respectively connected with the first end plate and the second end plate, wherein the second direction is the extending direction of the first end plate or the second end plate.
In the battery module that this application provided, first end plate, second end plate, first fastening components, second fastening components, first apron and second apron enclose synthetically the box, the box is used for acceping a plurality of batteries to it is a plurality of the battery has fixed action and restriction inflation effect. Wherein, first apron reaches the second end plate is favorable to restricting a plurality ofly the removal of battery in the second direction is favorable to further improving the box is to the fixed effect of battery module, improves the stability of battery module.
The application also provides an energy storage device, energy storage device includes a plurality of battery modules that this application provided, a plurality of battery modules are connected through the mode electricity of establishing ties, parallelly connected or series-parallel connection.
The application provides an energy storage equipment has included a plurality of battery modules that this application provided, a plurality of battery modules utilize first fastening components, second fastening components realized with can dismantle between first end plate, the second end plate fixedly, need not more end plates and come to fix the battery, alleviateed the manufacturing cost of battery module when alleviateing the weight of battery module, just battery module is fixed effectual to the battery, and the security performance is high. Further, battery module among the energy storage equipment is fixed effectual to the battery, and the security performance is high, just the structure of battery module is still less among the energy storage equipment, is favorable to realizing energy storage equipment's lightweight and reduction energy storage cost.
The application also provides an electric equipment, the electric equipment includes equipment body and the battery module that this application provided, the battery module does the electric equipment power supply.
The utility model provides a consumer is supplied power by the battery module that this application provided, the battery module has lightweight and the lower advantage of cost, just battery module security performance is higher, can do the consumer provides stable power, and reduces the manufacturing cost of consumer.
In the embodiment of the application, the first fastening assembly and the second fastening assembly connect the first end plate and the second end plate and enclose a box body, the box body is used for accommodating the batteries, the box body can limit expansion of the batteries to a certain extent and has a good fixing effect on the batteries. In addition, first fastening components can be dismantled fixedly first end plate reaches the second end plate, second fastening components can be dismantled fixedly first end plate reaches the second end plate, and the follow-up maintenance and the dismantlement of being convenient for have reduced the maintenance cost. Moreover, for totally enclosed battery module, required structure is less in the battery module of this application, has alleviateed battery module's weight and has reduced the manufacturing cost of structure, and then has reduced battery module's manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present application;
fig. 2 is a schematic view illustrating a partially exploded structure of a battery module according to an embodiment of the present application;
FIG. 3 is a schematic view of a first end plate according to an embodiment of the present application;
FIG. 4 is a schematic view of a second end plate according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a battery module according to another embodiment of the present application;
fig. 6 is a schematic view illustrating a partially exploded structure of the battery module according to the embodiment of fig. 5 of the present application;
FIG. 7 is a schematic structural view of a fastener according to an embodiment of the present application;
FIG. 8 is an enlarged view of the dotted line box A of FIG. 6 of the present application;
fig. 9 is a schematic structural view of a battery module according to yet another embodiment of the present application;
fig. 10 is a schematic diagram illustrating a partially exploded structure of the battery module according to the embodiment of fig. 9;
FIG. 11 is an enlarged view of the dotted line box B of FIG. 10 of the present application;
fig. 12 is a schematic structural view of a battery module according to yet another embodiment of the present application;
fig. 13 is a schematic structural view illustrating a battery module according to another embodiment of the present application;
fig. 14 is a schematic diagram illustrating a partially exploded structure of the battery module according to the embodiment of fig. 13;
fig. 15 is an exploded view schematically illustrating a battery module according to still another embodiment of the present application;
FIG. 16 is a schematic structural view of a fastener according to yet another embodiment of the present application;
fig. 17 is a schematic structural view of a battery module according to yet another embodiment of the present application;
fig. 18 is a schematic structural view of a battery module according to the embodiment of the present application in fig. 17;
fig. 19 is a schematic structural diagram of an energy storage system according to an embodiment of the present application;
fig. 20 is a schematic structural diagram of an electric device according to an embodiment of the present application.
Description of reference numerals:
100-battery module, 10-case, 11-first end plate, 111-first hollowed-out portion, 112-first through hole, 113-first through groove, 114-third surface, 115-fourth surface, 12-second end plate, 121-second hollowed-out portion, 122-second through hole, 123-second through groove, 124-fifth surface, 125-sixth surface, 14-first fastening component, 15-second fastening component, 16-fastener, 161-first fixing portion, 161 a-first through hole, 161 b-first locking member, 162-connecting portion, 163-second fixing portion, 163 a-second through hole, 163 b-second locking member, 164-first fastener, 165-second fastener, 166-third fastener, 167-fourth fastener, 18-limiting member, 20-first cover plate, 21-second cover plate, 30-battery, 31-first surface, 32-second surface, 33-explosion-proof valve, 50-200-fireproof equipment body, and fireproof equipment body.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.
The terms "first," "second," and the like in the description and claims of the present application and in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In the field of energy storage technology, the energy storage cost is higher than the power generation cost, and the energy storage cost needs to be reduced as much as possible to meet the power consumption requirement of a user side. In order to enable the battery module to have higher energy storage capacity, a plurality of electric cores are assembled in the box body to form the battery module. The battery module comprises a heat dissipation structure, the temperature of the heat dissipation structure is usually low, if the box body is not completely sealed, condensed water can be formed on a metal piece in the battery module, the short circuit of the battery module is easily caused, and therefore the box body used for bearing the battery core is usually closed. This makes the inside spare part of whole battery module more, and battery module's manufacturing cost is higher. In addition, electric core adopts the structure to glue fixedly usually to reduce the cost of battery module, but adopt the structure to glue fixed back battery and can not dismantle, follow-up maintenance cost is high, and the maintenance degree of difficulty is big.
Referring to fig. 1 and 2, the present embodiment provides a battery module 100, where the battery module 100 includes a plurality of batteries 30 and a case 10, the case 10 is used for accommodating the plurality of batteries 30, and the case 10 includes: a first end plate 11, a second end plate 12, a first fastening component 14 and a second fastening component 15; the second end plate 12 is arranged at a distance from the first end plate 11; the plurality of cells 30 are disposed between the first end plate 11 and the second end plate 12, each cell 30 has a first surface 31 and a second surface 32 disposed opposite to each other along a first direction (as indicated by an arrow X in fig. 1), the first surface 31 faces the first end plate 11, the second surface 32 faces the second end plate 12, wherein the first direction is a thickness direction of the cell 30; the first fastening assembly 14 is disposed on the same side of the first end plate 11 and the second end plate 12, and detachably fixes the first end plate 11 and the second end plate 12, respectively; the second fastening assembly 15 is located on the other side of the first end plate 11 and the second end plate 12 away from the first fastening assembly 14, and detachably fixes the first end plate 11 and the second end plate 12, respectively.
It is understood that the term "plurality" in this application refers to greater than or equal to two.
It is to be understood that the first direction is a thickness direction of the battery 30, wherein the thickness direction is a width direction of the shortest side of the battery 30.
It is understood that the first fastening assembly 14 and the second fastening assembly 15 connect the first end plate 11 and the second end plate 12, and the first end plate 11, the second end plate 12, the first fastening assembly 14 and the second fastening assembly 15 enclose a case 10, and the case 10 is used for accommodating a plurality of batteries 30. When the batteries 30 are expanded due to heat dissipation in the charging and discharging processes, the batteries 30 are extruded to the case body 10, and the case body 10 fixes and limits the batteries 30, so that the stability of the battery module 100 is improved.
Optionally, the first fastening assembly 14 detachably fixes the first end plate 11 and the second end plate 12, and the detachable fixing manner includes at least one of a threaded connection and a snap connection. The detachable fixation facilitates subsequent maintenance and detachment, and reduces the maintenance cost of the battery module 100.
Optionally, the second fastening assembly 15 detachably fixes the first end plate 11 and the second end plate 12, where the detachable fixing manner includes at least one of a threaded connection and a snap connection. The detachable fixation facilitates subsequent maintenance and detachment, and reduces the maintenance cost of the battery module 100. The first fastening assembly 14 and the second fastening assembly 15 are mutually matched and used for fixing the first end plate 11 and the second end plate 12, so that the structure of the box body 10 is more stable.
Specifically, when the plurality of batteries 30 are expanded due to heat dissipation during charging and discharging, the first surface 31 and the second surface 32 have a larger area relative to other surfaces of the batteries 30, so that the first surface 31 and the second surface 32 are deformed to a larger extent, the surfaces of the batteries 30 are generally formed by a stretching process, the first surface 31 and the second surface 32 have a smaller wall thickness relative to other surfaces of the batteries 30, and the first surface 31 and the second surface 32 are deformed to a larger extent when the batteries 30 are expanded. In the embodiment of the present application, the first surface 31 faces the first end plate 11, the second surface 32 faces the second end plate 12, when the batteries 30 expand, the first end plate 11 abuts against the first surface 31 closest to the first end plate 11 in the batteries 30, the second end plate 12 abuts against the second surface 32 closest to the second end plate 12 in the batteries 30, and the first end plate 11 and the second end plate 12 limit the expansion of the batteries 30 in the thickness direction, which is beneficial to improving the fixing effect of the box 10 on the batteries 30.
In the embodiment of the present application, the first fastening assembly 14 and the second fastening assembly 15 connect the first end plate 11 and the second end plate 12 to form a box 10, the box 10 is used for accommodating the plurality of batteries 30, and the box 10 can limit the expansion of the batteries 30 and has a good fixing effect on the plurality of batteries 30. In addition, the first fastening assembly 14 can be detachably fixed on the first end plate 11 and the second end plate 12, and the second fastening assembly 15 can be detachably fixed on the first end plate 11 and the second end plate 12, so that subsequent maintenance and disassembly are facilitated, and the maintenance cost is reduced. Furthermore, for the battery module 100 that is completely sealed, the required structural members in the battery module 100 of the present application are few, the weight of the battery module 100 is reduced, and the production cost of the structural members is reduced, thereby reducing the production cost of the battery module 100.
Optionally, referring to fig. 2, in some embodiments, each of the batteries 30 includes at least one explosion-proof valve 33, the explosion-proof valve 33 is disposed at an end of the battery 30 close to the first fastening assembly 14, and the explosion-proof valve 33 is disposed in a staggered manner from the first fastening assembly 14; alternatively, the explosion-proof valve 33 is disposed at one end of the battery 30 close to the second fastening assembly 15, and the explosion-proof valve 33 is disposed in a staggered manner with respect to the second fastening assembly 15. In the embodiment of the present application, the explosion-proof valve 33 makes the inside of the battery 30 in a sealed state, when the battery 30 is overcharged or internally short-circuited, a large amount of gas is generated inside the battery 30, and the large amount of gas is discharged to the outside of the battery 30 through the explosion-proof valve 33 to discharge excessive gas, so as to prevent the battery 30 from exploding due to too high internal gas pressure, and improve the safety performance of the battery 30. The explosion-proof valve 33 is disposed to be staggered with the second fastening assembly 15 and the first fastening assembly 14, so that when a large amount of gas is generated in the battery 30, the gas can be discharged out of the battery 30 through the explosion-proof valve 33, thereby improving the safety performance of the battery 30.
Referring to fig. 3 and 4, in some embodiments of the present disclosure, the first end plate 11 has a plurality of first hollow-out portions 111 arranged at intervals, and the second end plate 12 has a plurality of second hollow-out portions 121 arranged at intervals.
In the embodiment of the present application, the heat dissipation effect of the first end plate 11 is improved by the first hollow portions 111, and the heat dissipation effect of the second end plate 12 is improved by the second hollow portions 121, which is beneficial to dissipating heat generated by the battery 30 in the battery module 100 during operation. In addition, the portion between the adjacent first hollow portions 111 functions as a reinforcing rib for the first end plate 11, and the portion between the adjacent second hollow portions 121 functions as a reinforcing rib for the second end plate 12, so that the strength of the first end plate 11 and the strength of the second end plate 12 are improved. Furthermore, a plurality of first fretwork portions 111 are favorable to alleviateing the weight of first end plate 11, a plurality of second fretwork portions 121 are favorable to alleviateing the weight of second end plate 12, and then have alleviateed battery module 100's weight, are favorable to realizing battery module 100's lightweight design.
Optionally, the shape of the first hollow-out portion 111 may be at least one of a regular shape or an irregular shape; the second hollow portion 121 may have at least one of a regular shape and an irregular shape. In some embodiments, the regular shape may be, but is not limited to, a triangle, a quadrilateral, a circle, a hexagon, and the like.
Optionally, the plurality of first hollow-out portions 111 are arranged in an array or the first end plate 11 is a honeycomb structure; the plurality of second hollow portions 121 are arranged in an array or the second end plate 12 has a honeycomb structure.
In the embodiment of the present application, the plurality of first hollow portions 111 arranged in an array are beneficial to making the strength of the first end plate 11 in all directions more uniform, and the plurality of second hollow portions 121 arranged in an array are beneficial to making the strength of the second end plate 12 in all directions more uniform, so as to improve the overall strength of the first end plate 11 and the second end plate 12. In the battery module 100 of the present application, when the battery 30 expands during the charging and discharging process, the strength of the first end plate 11 and the second end plate 12 is greater, and the fixing and expansion limiting effects of the battery 30 are stronger.
Referring to fig. 1 and 2, in some embodiments of the present application, at least one of the first fastening component 14 and the second fastening component 15 comprises: and a plurality of fasteners 16, wherein opposite ends of each fastener 16 are detachably fixed to the first end plate 11 and the second end plate 12 respectively.
In the embodiment of the present application, the plurality of fasteners 16 facilitate better connection between the first end plate 11 and the second end plate 12, improve connection stability, and better confine the plurality of batteries 30 in the case 10. When at least one of the first fastening member 14 and the second fastening member 15 includes the fastening member 16, the battery module 100 of the present application requires fewer structural members, reduces the weight of the battery module 100 and the production cost of the structural members, and thus reduces the production cost of the battery module 100, relative to a completely sealed battery module 100. Furthermore, the fasteners 16 are detachably fixed to the first end plate 11 and the second end plate 12, so that subsequent maintenance and disassembly are facilitated, and the maintenance cost is reduced.
Optionally, the first fastening assembly 14 and the second fastening assembly 15 each comprise a plurality of fasteners 16; alternatively, the first fastening assembly 14 includes a plurality of fasteners 16, or the second fastening assembly 15 includes a plurality of fasteners 16. In some embodiments, when the first fastening assembly 14 and the second fastening assembly 15 both include a plurality of fastening members 16, the plurality of fastening members 16 are staggered, which is beneficial to further improve the structural stability of the case 10, so that when the plurality of batteries 30 in the case 10 are expanded, the case 10 has better fixing effect on the plurality of batteries 30 and better effect of limiting the expansion.
Alternatively, the shape of the fastener 16 may be at least one of a flat strip, a bar, and a strut strip. When the fastening member 16 is shaped as a flat strip and two opposite ends of the fastening member 16 are connected to the first end plate 11 and the second end plate 12, it is more beneficial to save the space of the battery 30 in the height direction.
Optionally, the material of the fastener 16 includes at least one of iron, aluminum, and the like.
Optionally, the plurality of fasteners 16 are secured to the first and second end plates 11, 12 by at least one of screws, rivets, snaps, and the like.
Referring to fig. 1 and 2, in some embodiments of the present application, the plurality of fastening members 16 are sequentially arranged at intervals along a second direction (as indicated by an arrow Y in fig. 2), wherein the second direction is an extending direction of the first end plate 11 or an extending direction of the second end plate 12.
It is understood that the extending direction of the first end plate 11 is the long side direction of the first end plate 11, and the extending direction of the second end plate 12 is the long side direction of the second end plate 12.
In the embodiment of the present application, the plurality of fasteners 16 are arranged along the long side direction of the first end plate 11 or the long side direction of the second end plate 12 at intervals in sequence, the assembling manner of the plurality of fasteners 16 is simple, and is favorable for disassembly, and the assembling cost and the maintenance cost of the battery module 100 are reduced.
In an embodiment, the second direction is perpendicular to the first direction, and the plurality of cells 30 are regularly stacked in the cell module 100, so that the space utilization rate of the box 10 is improved, the energy density of the cell module 100 is improved, and the miniaturization of the cell module 100 is facilitated.
Referring to fig. 1 and fig. 2, in some embodiments of the present application, a length of the first end plate 11 or the second end plate 12 along a third direction (as indicated by an arrow Z in fig. 2) is L1, a distance between any two adjacent fasteners 16 is L2, and 0.9L1 is not less than L2 is not less than 1.1L1, the third direction is perpendicular to the second direction, and the third direction is perpendicular to a thickness direction of the first end plate 11 or a thickness direction of the second end plate 12.
It is to be understood that the third direction is a height direction of the first end plate 11; alternatively, the third direction is a height direction of the second end plate 12.
Alternatively, the distance L2 between any two adjacent fasteners 16 may have a value of, but not limited to, 0.9L1, 0.92L1, 0.95L1, 0.98L1, 1.0L1, 1.02L1, 1.03L1, 1.05L1, 1.07L1, 1.08L1, 1.1L1, and the like.
In the embodiment of the application, when the distance L2 between any two adjacent fasteners 16 satisfies 0.9L1 is not less than L2 and not more than 1.1L1, the distance L2 between two adjacent fasteners 16 sequentially arranged at intervals along the second direction is in a reasonable range, and when the battery 30 expands in the charging and discharging process, the stress on the case 10 is more uniform, which is beneficial to enhancing the fixing effect and the limiting effect on the battery 30. When the value of the distance L2 between any two adjacent fasteners 16 is greater than 1.1L1, the distance between the adjacent fasteners 16 is too large, which weakens the fixing effect of the case 10 on the battery 30 and reduces the overall stability of the battery module 100; when the value of the distance L2 between any two adjacent fasteners 16 is less than 0.9L1, the distance between the adjacent fasteners 16 is too small, which can further enhance the fixing effect on the battery 30, but increases the production cost and the process cost.
In a specific embodiment, a distance L2 between any two adjacent fastening members 16 is equal to a length L1 of the first end plate 11 or the second end plate 12 in the third direction, that is, a value of the distance L2 between any two adjacent fastening members 16 satisfies L2= L1, in this embodiment, the arrangement density of the fastening members 16 is favorable for improving the strength of the case 10, and when the battery 30 expands during charging and discharging, the case 10 is stressed more uniformly, so that the fixing effect and the limiting effect on the battery 30 are strengthened.
Referring to fig. 5 to 7, in some embodiments of the present application, each of the fastening members 16 includes a first fixing portion 161, a connecting portion 162, and a second fixing portion 163, which are sequentially bent and connected, and the first fixing portion 161 and the second fixing portion 163 are located on the same side of the connecting portion 162; the first fixing portion 161 is detachably fixed to the first end plate 11, and the second fixing portion 163 is detachably fixed to the second end plate 12.
It is understood that the first fixing portion 161, the connecting portion 162 and the second fixing portion 163 are sequentially bent to form a "U" shape, that is, the fastening member 16 is a "U" shape. In the embodiment shown in fig. 1 and 2, the fastening member 16 is directly fixed to the first end plate 11 and the second end plate 12 by screws or the like, and when the battery 30 expands in volume during charging and discharging and generates a pressing force on the case 10, the screws for fixing the fastening member 16 are directly subjected to a shearing force, and the fastening member 16 is easily broken after a certain period of use. In the scheme of the fastening member 16 with the U-shaped structure, the fastening member 16 has a larger contact area with the first end plate 11 and the second end plate 12, and when the battery 30 expands in volume and generates extrusion force on the box body 10 in the charging and discharging processes, the stressed area of the compression member is larger, so that stress concentration is less likely to occur, and the fastening member 16 is less likely to break.
Referring to fig. 5 to 11, in some embodiments of the present application, the first end plate 11 has a third surface 114 and a fourth surface 115 connected in a bent manner, the third surface 114 faces away from the battery 30, the fourth surface 115 faces the fastener 16, and the first fixing portion 161 has a first through hole 161a; the first end plate 11 further has a first through hole 112 and a first through groove 113, the first through hole 112 penetrates through the third surface 114, and the first through groove 113 penetrates through the fourth surface 115; the first fixing portion 161 is disposed through the first through groove 113; the battery module 100 further includes a first locking member 161b, wherein the first locking member 161b is sequentially inserted into the first through hole 112 and the first through hole 161a, so as to detachably fix the first fixing portion 161 to the first end plate 11; the second end plate 12 has a fifth surface 124 and a sixth surface 125 connected with each other in a bent manner, the fifth surface 124 faces away from the battery 30, the sixth surface 125 faces toward the fastener 16, and the second fixing portion 163 has a second through hole 163a; the second end plate 12 further has a second through hole 122 and a second through groove 123 which are communicated with each other, the second through hole 122 penetrates through the fifth surface 124, and the second through groove 123 penetrates through the sixth surface 125; the second fixing portion 163 is disposed through the second through-groove 123; the battery module 100 further includes a second locking member 163b, and the second locking member 163b is sequentially inserted into the second through hole 122 and the second through hole 163a, so as to detachably fix the second fixing portion 163 to the second end plate 12.
In the embodiment of the present application, the fastening member 16 is in a "U" shape, and the first fixing portion 161 is inserted into the first end plate 11 through the first through slot 113 and fixed to the first end plate 11 through the first locking member 161 b; the second fixing portion 163 is inserted into the second end plate 12 through the second through groove 123, and is fixed to the second end plate 12 through the second locking member 163 b. With respect to the solution shown in fig. 1 and 2, the fastening member 16 of the present application is fixedly connected to the third surface 114 of the first end plate 11 and the fifth surface 124 of the second end plate 12, and the first locking member 161b can be disposed in the thickness direction of the first end plate 11 by the thickness of the first end plate 11 without occupying the height of the first end plate 11 on the side of the third surface 114 and the height of the first end plate 11 on the side of the fourth surface 115; the second locking member 163b may be disposed in the thickness direction of the second end plate 12 by the thickness of the second end plate 12, and does not need to occupy the height of one side of the fifth surface 124 of the second end plate 12 or the height of one side of the sixth surface 125, thereby saving more height spaces, facilitating the stacking of a plurality of battery modules 100, and improving the space utilization and stability of the stacking of the battery modules 100.
Optionally, the fastening member 16 is assembled with the first end plate 11 and the second end plate 12 in a manner that: the first fixing portion 161 of the fastening member 16 is inserted into the first through groove 113, and the first locking member 161b is sequentially inserted into the first through hole 112 and the first through hole 161a, so as to fix the first fixing portion 161 to the first end plate 11; the second fixing portion 163 of the fastening member 16 is inserted into the second through-hole 123, and the second locking member 163b is sequentially inserted into the second through-hole 122 and the second through-hole 163a, so that the second fixing portion 163 is fixed to the second end plate 12.
Alternatively, the first locking member 161b may be, but is not limited to, at least one of a screw, a bolt, a rivet, and the like; the second locking member 163b may be, but is not limited to, at least one of a screw, a bolt, a rivet, and the like.
Referring to fig. 12, in some embodiments of the present application, the plurality of fastening members 16 of the first fastening assembly 14 are sequentially bent and connected; the plurality of fastening members 16 of the second fastening assembly 15 are sequentially bent and connected.
In the embodiment of the present application, both ends that back to each other of fastener 16 are all fixed in on first end plate 11 or second end plate 12, and the junction of two adjacent fasteners 16 is fixed in through at least one of screw, screw rod and rivet first end plate 11 or on second end plate 12, compare in a plurality of fasteners 16 edge the scheme that the second direction was arranged at intervals in proper order, the fastener 16 that this application provided is end to end in proper order, a plurality of fasteners 16 with form the triangle-shaped that a plurality of stability are higher between first end plate 11, the second end plate 12, improved fastener 16 with joint strength between first end plate 11, the second end plate 12 has then improved the stability of box 10. When the plurality of batteries 30 are expanded during the charging and discharging processes, the case 10 has a better effect of fixing the plurality of batteries 30 and limiting the expansion.
In some embodiments, at least one of the first fastening assembly 14 and the second fastening assembly 15 includes a first fastening member 164, a second fastening member 165, and a third fastening member 166, and the first fastening member 164, the second fastening member 165, and the third fastening member 166 are sequentially bent and connected to form an integral structure.
In some embodiments, the first fastening component 14 includes a first fastening member 164, a second fastening member 165, and a third fastening member 166 that are sequentially bent and connected to form a unitary structure. In other embodiments, the second fastening assembly 15 includes a first fastening member 164, a second fastening member 165, and a third fastening member 166 that are sequentially bent and connected to form an integral structure. In still other embodiments, the first fastening assembly 14 and the second fastening assembly 15 each include a first fastening member 164, a second fastening member 165, and a third fastening member 166 that are sequentially bent and connected to form an integral structure.
In the embodiment of the present application, two triangles with high stability are formed between the first fastener 164, the second fastener 165 and the third fastener 166 and the first end plate 11 and the second end plate 12, so that the connection strength between the fastener 16 and the first end plate 11 and the second end plate 12 is improved, and the fastening effect and the expansion limiting effect of the case 10 on the plurality of batteries 30 are improved.
In one embodiment, the first fastener 164, the second fastener 165 and the third fastener 166 are sequentially bent and connected to form a "Z" shaped structure. Specifically, two opposite ends of the first fastening member 164 are fixed to the first end plate 11 and the second end plate 12, two opposite ends of the third fastening member 166 are fixed to the first end plate 11 and the second end plate 12, one end of the second fastening member 165 is connected to the first fastening member 164, and the other end of the second fastening member 165 is connected to the third fastening member 166, so that the fastening member 16 is fixed to the first end plate 11 and the second end plate 12.
Alternatively, the plurality of fasteners 16 may be integrally formed, or may be separately formed and then connected together to form an integral structure.
Referring to fig. 13 and 14, in some embodiments of the present disclosure, at least one of the first fastening assembly 14 and the second fastening assembly 15 includes a first fastening member 164, a second fastening member 165, a third fastening member 166, and a fourth fastening member 167, and the first fastening member 164, the second fastening member 165, the third fastening member 166, and the fourth fastening member 167 are sequentially bent and connected to form an integral structure.
In some embodiments, the first fastening assembly 14 includes a first fastening member 164, a second fastening member 165, a third fastening member 166, and a fourth fastening member 167 that are sequentially bent and connected to form a unitary structure. In other embodiments, the second fastening assembly 15 includes a first fastening member 164, a second fastening member 165, a third fastening member 166, and a fourth fastening member 167 that are sequentially bent and connected to form a unitary structure. In still other embodiments, the first fastening assembly 14 and the second fastening assembly 15 each include a first fastening member 164, a second fastening member 165, a third fastening member 166, and a fourth fastening member 167, which are sequentially bent and connected to form an integral structure.
In the embodiment of the present application, a plurality of triangles with high stability are formed between the first fastener 164, the second fastener 165, the third fastener 166, and the fourth fastener 167 and the first end plate 11 and the second end plate 12, so that the connection strength between the fastener 16 and the first end plate 11 and the second end plate 12 is improved, and the fastening effect and the limiting effect of the box 10 on the plurality of batteries 30 are further improved.
In one embodiment, the first fastener 164, the second fastener 165, the third fastener 166 and the fourth fastener 167 are sequentially bent and connected to form an "M" shaped structure. Specifically, two opposite ends of the first fastening member 164 are fixed to the first end plate 11 and the second end plate 12, two opposite ends of the fourth fastening member 167 are fixed to the first end plate 11 and the second end plate 12, one end of the second fastening member 165 is connected to the first fastening member 164, the other end of the second fastening member 165 is connected to one end of the third fastening member 166, and the other end of the third fastening member 166 is connected to the fourth fastening member 167.
Alternatively, the plurality of fasteners 16 may be integrally formed, or may be separately formed and then connected together to form an integral structure. When the plurality of fastening pieces 16 are of an integrally formed structure, the mounting process of the fastening pieces 16 is facilitated to be simplified, but the integrally formed structure is difficult to process, and waste of processing materials is easily caused. When the plurality of fastening members 16 are respectively formed and then connected to form an integrated structure, the plurality of fastening members 16 have low processing cost, thereby reducing the production cost of the battery module 100.
Referring to fig. 15 and 16, in some embodiments of the present application, the box body 10 further includes a plurality of stoppers 18, where the stoppers 18 are arranged along an extending direction of the fastening member 16, and are disposed between two adjacent batteries 30, so as to allow the two adjacent batteries 30 to be disposed at intervals; the plurality of position-limiting members 18 are in position-limiting engagement with the fastening member 16 to limit the positions of the position-limiting members 18.
It should be understood that the extending direction of the fastening element 16 is the longitudinal direction of the fastening element 16, the limiting elements 18 are arranged along the extending direction of the fastening element 16, and the limiting elements 18 are arranged along the longitudinal direction of the fastening element 16.
In the embodiment of the present application, the limiting members 18 are in limiting fit with the fastening member 16, the limiting members 18 are used for limiting the positions of the batteries 30, so that two adjacent batteries 30 are arranged at intervals, the fastening member 16 abuts against the limiting members 18, so as to limit the positions of the limiting members 18, and the fixing effect and the limiting effect on the batteries 30 are improved.
Optionally, in some embodiments, the limiting member 18 is insulating, and the material of the limiting member 18 includes at least one of resin, rubber, or plastic. In other embodiments, the position-limiting member 18 may also be a metal (e.g., aluminum, iron, etc.), and the surface of the position-limiting member 18 is coated with an insulating material, which includes at least one of resin, rubber, or plastic.
In some embodiments of the present application, the plurality of position-limiting members 18 are disposed at intervals on a surface of the fastening member 16 facing the battery 30, and the plurality of position-limiting members 18 and the fastening member 16 are an integral structure; or, the limiting member 18 is snapped to the fastening member 16, so that the limiting member 18 and the fastening member 16 are in limiting fit.
It will be appreciated that the integral construction of the retaining member 18 and the fastener 16 facilitates enhanced securement of the battery 30. In other embodiments, the limiting member 18 and the fastening member 16 are separate structures, and the limiting member 18 is fastened to the fastening member 16, and compared with the solution that the limiting member 18 and the fastening member 16 are an integrated structure, when the limiting member 18 and the fastening member 16 are separate structures, the assembly difficulty of the battery module 100 is low, the assembly flexibility is higher, and the production difficulty of the fastening member 16 is lower, which is beneficial to reducing the production cost of the battery module 100.
Referring to fig. 17 and 18, in some embodiments of the present application, the battery module 100 further includes a fire-proof plate 50, wherein the fire-proof plate 50 is disposed on a side of the first fastening assembly 14 facing away from the plurality of batteries 30 and is connected to the first fastening member 164. A fire prevention plate 50 is provided at a side of the first fastening member 14 facing away from the plurality of batteries 30, so that the fire prevention plate 50 prevents fire from spreading when thermal runaway of the battery module 100 occurs. When the plurality of battery modules 100 are stacked, if one of the battery modules 100 is out of control due to heat, the fire prevention plate 50 may prevent the fire from spreading to affect the normal operation of the other battery modules 100, and the fire prevention plate 50 is advantageous to improve the safety performance of the battery modules 100.
Optionally, the fire shield 50 is secured to a side of the fastening assembly facing away from the plurality of batteries 30 by at least one of screws, bolts, and rivets.
Optionally, the fire shield 50 comprises at least one of a mica fire shield 50, an insulated glass wool panel, a metal panel including a fire barrier layer, and the like. When the fire-proof plate 50 is a metal plate including a fire-proof layer, the metal plate may be, but is not limited to, a metal plate coated with a ceramic fire-proof coating, a metal plate attached with a ceramic silica gel pad, or the like.
Referring to fig. 17 and 18, in some embodiments of the present application, the box 10 further includes a first cover plate 20 and a second cover plate 21 disposed along a second direction, wherein the first cover plate 20 is connected to the first end plate 11 and the second end plate 12 respectively; the second cover plate 21 is connected to the first end plate 11 and the second end plate 12, respectively.
In the embodiment of the present application, the first end plate 11, the second end plate 12, the first fastening assembly 14, the second fastening assembly 15, the first cover plate 20 and the second cover plate 21 enclose the case 10, and the case 10 is configured to accommodate the plurality of batteries 30 and has a fixing function and an expansion limiting function for the plurality of batteries 30. The first cover plate 20 and the second end plate 12 are beneficial to limiting the movement of the plurality of batteries 30 in the second direction, and are beneficial to further improving the fixing effect of the box 10 on the battery module 100 and improving the stability of the battery module 100.
Optionally, the first end plate 11, the second end plate 12, the first cover plate 20, and the second cover plate 21 are connected by a snap, so that the battery module 100 can be conveniently detached, and the maintenance cost of the battery module 100 is reduced.
Optionally, in some embodiments, the first cover plate 20 and the second cover plate 21 are provided with a sealing structure for preventing moisture and the like from adhering to metal members (such as bus bars and high-voltage aluminum bars) and the like in the battery module 100, and thus causing a short circuit of the battery module 100. In the embodiment of this application, battery module 100 is totally enclosed not, through right the part that receives steam influence and cause battery module 100 short circuit among the battery module 100 carries out local sealing, is favorable to improving battery module 100's security performance and stability.
Referring to fig. 19, the present embodiment further provides an energy storage device 200, where the energy storage device 200 includes a plurality of battery modules 100 provided in the present application, and the plurality of battery modules 100 are electrically connected in series, in parallel, or in series-parallel.
The energy storage device 200 provided by the embodiment of the present application comprises a plurality of battery modules 100 provided by the present application, the plurality of battery modules 100 utilize the first fastening component 14 and the second fastening component 15 to realize the detachable fixation between the first end plate 11 and the second end plate 12, and the battery 30 is fixed without more end plates, so that the production cost of the battery module 100 is reduced while the weight of the battery module 100 is reduced, and the battery module 100 has good fixation effect on the battery 30 and high safety performance. Further, battery module 100 among energy storage device 200 is effectual to the fixed of battery 30, and the security performance is high, and battery module 100's structure is still less among the energy storage device 200, is favorable to realizing energy storage device 200's lightweight and reduction energy storage cost.
Referring to fig. 20, an embodiment of the present application further provides an electric device 300, where the electric device 300 includes a device body 310 and the battery module 100 provided in the present application, and the battery module 100 supplies power to the electric device 300.
The utility model provides an consumer 300 is supplied power by the battery module 100 that the application provided, battery module 100 has the advantage that lightweight and cost are lower, just battery module 100 security performance is higher, can do consumer 300 provides stable power, and reduces consumer 300's manufacturing cost.
Optionally, the electric device 300 may be, but is not limited to, an electric device 300 such as an automobile, a van, a truck, a mobile phone, a tablet computer, a notebook computer, a camera wearable device (such as a smart watch, a bracelet, a VR device, and the like), a television, a vehicle-mounted device, an e-reader, and the like.
Reference in the specification to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the embodiments of the present application may be combined arbitrarily without contradiction between them to form another embodiment without departing from the spirit and scope of the present application.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims (16)

1. The utility model provides a battery module, its characterized in that includes a plurality of batteries and box, the box is used for accomodating a plurality of the battery, the box includes:
a first end plate;
a second end plate spaced apart from the first end plate; the plurality of batteries are arranged between the first end plate and the second end plate, each battery is provided with a first surface and a second surface which are arranged oppositely along a first direction, the first surface faces the first end plate, the second surface faces the second end plate, and the first direction is the thickness direction of the battery;
the first fastening assembly is arranged on the same side of the first end plate and the second end plate and detachably fixes the first end plate and the second end plate respectively; and
and the second fastening assembly is positioned on the other side of the first end plate and the second end plate, which is away from the first fastening assembly, and is detachably fixed on the first end plate and the second end plate respectively.
2. The battery module according to claim 1, wherein: the first end plate is provided with a plurality of first hollow parts arranged at intervals, and the second end plate is provided with a plurality of second hollow parts arranged at intervals.
3. The battery module according to claim 2, wherein: the plurality of first hollow parts are arranged in an array mode or the first end plate is of a honeycomb structure; the second hollow parts are arranged in an array mode or the second end plate is of a honeycomb structure.
4. The battery module according to claim 1, wherein: at least one of the first and second fastening components comprises: and the two opposite ends of each fastener are detachably fixed on the first end plate and the second end plate respectively.
5. The battery module according to claim 4, wherein: the plurality of fasteners are arranged at intervals in sequence along a second direction, wherein the second direction is the extending direction of the first end plate or the extending direction of the second end plate.
6. The battery module according to claim 5, wherein: the length of the first end plate or the second end plate in the third direction is L1, the distance between any two adjacent fasteners is L2, 0.9L1 is not less than L2 and not more than 1.1L1 is met, the third direction is perpendicular to the second direction, and the third direction is perpendicular to the thickness direction of the first end plate or the thickness direction of the second end plate.
7. The battery module according to any one of claims 5 or 6, wherein each of the fastening members includes a first fixing portion, a connecting portion, and a second fixing portion, which are bent and connected in sequence, and the first fixing portion and the second fixing portion are located on the same side of the connecting portion; the first fixing part is detachably fixed on the first end plate, and the second fixing part is detachably fixed on the second end plate.
8. The battery module according to claim 7, wherein the first end plate has a third surface and a fourth surface connected in a bent manner, the third surface faces away from the battery, the fourth surface faces the fastener, and the first fixing portion has a first through hole; the first end plate is also provided with a first through hole and a first through groove which are communicated, the first through hole penetrates through the third surface, and the first through groove penetrates through the fourth surface; the first fixing part penetrates through the first through groove; the battery module further comprises a first locking piece, and the first locking piece sequentially penetrates through the first through hole and the first penetrating hole so as to detachably fix the first fixing part to the first end plate;
the second end plate is provided with a fifth surface and a sixth surface which are connected in a bending mode, the fifth surface is away from the battery, the sixth surface faces the fastener, and the second fixing portion is provided with a second through hole; the second end plate is also provided with a second through hole and a second through groove which are communicated, the second through hole penetrates through the fifth surface, and the second through groove penetrates through the sixth surface; the second fixing part penetrates through the second through groove; the battery module further comprises a second locking piece, the second locking piece sequentially penetrates through the second through hole and the second penetrating hole, and the second fixing portion is detachably fixed on the second end plate.
9. The battery module according to claim 4, wherein the plurality of fastening members of the first fastening member are sequentially bent and connected; the plurality of fasteners of the second fastening assembly are sequentially bent and connected.
10. The battery module as set forth in claim 9, wherein at least one of the first fastening member and the second fastening member comprises a first fastening member, a second fastening member, a third fastening member and a fourth fastening member, and the first fastening member, the second fastening member, the third fastening member and the fourth fastening member are sequentially bent and connected to form an integral structure.
11. The battery module according to claim 4, wherein the case further comprises:
the limiting pieces are arranged along the extending direction of the fastening piece, arranged between every two adjacent batteries and used for enabling the two adjacent batteries to be arranged at intervals; the limiting pieces are in limiting fit with the fasteners so as to limit the positions of the limiting pieces.
12. The battery module as set forth in claim 11, wherein the plurality of stoppers are disposed at intervals on the surface of the fastening member facing the battery, and the plurality of stoppers and the fastening member are integrated; or, the limiting part is clamped with the fastening part, so that the limiting part is in limiting fit with the fastening part.
13. The battery module according to claim 1, further comprising a flame retardant plate disposed on a side of the first fastening member facing away from the plurality of batteries and connecting the first fastening member.
14. The battery module according to claim 1, wherein the case further comprises a first cover plate and a second cover plate disposed opposite to each other along the second direction, the first cover plate being connected to the first end plate and the second end plate, respectively; the second cover plate is respectively connected with the first end plate and the second end plate, wherein the second direction is the extending direction of the first end plate or the second end plate.
15. An energy storage device, comprising:
a plurality of the battery modules according to any one of claims 1 to 14, which are electrically connected in series, in parallel, or in series-parallel.
16. An electrical device, comprising:
an apparatus body; and
the battery module according to any one of claims 1 to 14, which supplies power to the electric device.
CN202211376983.XA 2022-11-04 2022-11-04 Battery module, energy storage equipment and consumer Withdrawn CN115632207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211376983.XA CN115632207A (en) 2022-11-04 2022-11-04 Battery module, energy storage equipment and consumer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211376983.XA CN115632207A (en) 2022-11-04 2022-11-04 Battery module, energy storage equipment and consumer

Publications (1)

Publication Number Publication Date
CN115632207A true CN115632207A (en) 2023-01-20

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CN202211376983.XA Withdrawn CN115632207A (en) 2022-11-04 2022-11-04 Battery module, energy storage equipment and consumer

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116014341A (en) * 2023-03-28 2023-04-25 中创新航科技集团股份有限公司 Battery device and method for attaching reinforcing bar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116014341A (en) * 2023-03-28 2023-04-25 中创新航科技集团股份有限公司 Battery device and method for attaching reinforcing bar

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Application publication date: 20230120