CN108899448B - Battery module - Google Patents
Battery module Download PDFInfo
- Publication number
- CN108899448B CN108899448B CN201810756867.8A CN201810756867A CN108899448B CN 108899448 B CN108899448 B CN 108899448B CN 201810756867 A CN201810756867 A CN 201810756867A CN 108899448 B CN108899448 B CN 108899448B
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- China
- Prior art keywords
- battery
- pouch
- heat dissipation
- type
- battery module
- 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.)
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Links
- 230000017525 heat dissipation Effects 0.000 claims abstract description 66
- 230000001681 protective effect Effects 0.000 claims abstract description 38
- 230000000994 depressogenic effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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
- H01M50/20—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
-
- 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 application relates to a battery module. The battery module comprises at least two battery units which are stacked, wherein each battery unit comprises: a support base; at least one pouch-type battery; and a protective heat dissipation case; the protection heat dissipation shell is connected with the supporting seat to form an accommodating space, the bag-type battery is accommodated in the accommodating space, at least one battery unit is provided with an exposed area exposing the bag-type battery, and the protection heat dissipation shell of the adjacent battery units is contacted with the bag-type battery through the exposed area. In the scheme, due to the fact that the same connecting force is applied, the acting force applied to the bag-type batteries by the protection heat dissipation shells is relatively consistent, accordingly, the pretightening force applied to the bag-type batteries in each battery unit is relatively consistent, and the pretightening force consistency applied to the bag-type batteries is improved.
Description
Technical Field
The application relates to the technical field of energy storage devices, in particular to a battery module.
Background
In the use process of the secondary battery, the contact well of the reaction interface needs to be ensured, at the moment, a certain pretightening force needs to be applied to the secondary battery to ensure the good contact of the reaction interface, and the poor contact interface can cause the problems of lithium precipitation and the like, so that the battery performance is seriously influenced. Therefore, the magnitude of the pretightening force can influence the chemical reaction inside each battery so as to influence the performance of each battery, and the inconsistency of the pretightening force can cause the inconsistency of the battery performance, so that the overall performance of the battery module is influenced.
Currently, a conventional pouch-type battery module includes a plurality of battery cells, each of which generally includes an upper case, a lower case, and a pouch-type battery accommodated in an accommodating chamber formed by the two cases, the upper case and the lower case being connected by an elastic clamping structure, and a pre-tightening force being applied to the pouch-type battery by the connection force. However, due to manufacturing variations, the positions and shapes of the elastic clamping structures are not completely consistent, which results in poor consistency of the pretightening force applied to the pouch-type battery.
Disclosure of Invention
The application provides a battery module, can improve the uniformity of the pretightning force that the bag-type battery among each battery unit received.
A battery module comprising at least two stacked battery cells, each of the battery cells comprising:
a support base;
at least one pouch-type battery; and
protecting the heat dissipation shell;
the protective heat dissipation shell is connected with the supporting seat to form an accommodating space, the bag-type battery is accommodated in the accommodating space,
at least one of the battery cells has an exposed region exposing the pouch-type battery, and the protective heat dissipation case of an adjacent battery cell is in contact with the pouch-type battery via the exposed region.
Further, at least one of the battery cells is provided as a single-sided battery cell including:
a first support base;
at least one first pouch-type battery; and
a first protective heat dissipation housing;
the first protection heat dissipation shell is connected with one side of the first supporting seat,
the first support seat is provided with an exposed area exposing the first pouch type battery, and the adjacent battery units are contacted with the first pouch type battery through the exposed area.
Further, the protective heat dissipation case includes a body and a protruding portion protruding from the body, the protruding portion being in contact with the first pouch type battery of the single-sided battery cell.
Further, the profile of the exposed region matches the profile of the protrusion.
Further, the protruding portion in contact is provided at least partially in contact with the first pouch-shaped battery.
Further, the battery module further includes a double-sided battery cell including:
a second support base; at least one second pouch-type battery; and
two second protection heat dissipation shells which are arranged in a split manner;
and each second protection heat dissipation shell clamps the second bag-type battery from two sides of the second supporting seat respectively.
Further, at least one of the two second protective heat dissipation cases includes a body and a protruding portion that is in direct contact with the first pouch type battery through the exposed region.
Further, the single-sided battery cells are provided in plurality and stacked, and the double-sided battery cells are disposed at the outermost sides of the battery modules in the stacking direction.
Further, the first support base includes a battery accommodating groove, the first pouch-shaped battery is accommodated in the battery accommodating groove, and a through hole is formed in the bottom wall of the battery accommodating groove so as to form the exposed area.
Further, the first support base further includes an expansion groove opened to one side of the adjacent battery cell, the expansion groove and the battery accommodating groove are arranged along the stacking direction of the battery cell, and are communicated with the battery accommodating groove through the through hole, and the protruding portion of the adjacent battery cell is accommodated in the expansion groove.
The technical scheme that this application provided can reach following beneficial effect:
the application provides a battery module, wherein, the pocket type battery direct contact of the adjacent battery cell of protection heat dissipation casing, from this, can know, after a plurality of battery cells pass through bolt or other fastener connection fixed, the connecting force that produces can pass through protection heat dissipation casing and transmit to pocket type battery, this connecting force converts into the pretightning force of applying to pocket type battery when acting on pocket type battery through protection heat dissipation casing, because receive same connecting force, consequently, the effort of each protection heat dissipation casing applied to pocket type battery is also comparatively unanimous, correspondingly, the pretightning force that each pocket type battery in every battery cell received is also comparatively unanimous, the uniformity of pretightning force that pocket type battery received has been improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is an exploded view of a battery module provided in an embodiment of the present application;
FIG. 2 is an exploded view of a battery cell provided in an embodiment of the present application;
fig. 3 is a cross-sectional view of a battery module provided in an embodiment of the present application;
fig. 4 is an exploded view of a single-sided battery cell provided in an embodiment of the present application.
Reference numerals:
1-a battery module;
10-battery cell;
100-supporting seats;
102-pouch-type battery;
104-protecting the heat dissipation shell;
1040-body;
1042-projections;
106-bare area;
108-an elastic cushion;
20-single sided battery cell;
200-a first supporting seat;
2000-bare area;
2002-battery accommodation groove;
2004-a first positioning support;
2006-expansion slot;
2008-first snap-in bump;
202-a first pouch-type battery;
204-a first protective heat dissipating housing;
2040-projections;
2042-accommodating grooves;
2044-first card holes.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Detailed Description
The present application is described in further detail below by way of specific embodiments and with reference to the accompanying drawings.
It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.
As shown in fig. 1 and 2, the present application provides a battery module 1, the battery module 1 includes a plurality of battery cells 10, the plurality of battery cells 10 are stacked, and a stacking direction is a thickness direction of the battery cells 10.
As shown in fig. 2, each battery cell 10 includes a support base 100, at least one pouch-type battery 102, and a protective heat dissipation case 104. The support base 100 and the protective heat dissipation case 104 are connected to form an accommodating space, and the pouch-type battery 102 is accommodated in the accommodating space. The protective heat dissipation housing 104 may be provided as a metal housing having a relatively high thermal conductivity, such as an aluminum housing.
The "pouch-type battery" referred to herein refers to an external package pouch for packaging a battery cell, which is a laminate sheet comprising a polymer layer and a metal layer.
At least one of the battery cells 10 has an exposed region 106 exposing the pouch-shaped battery 102, and the protective heat dissipation case 104 of the adjacent battery cell 10 is in contact with the pouch-shaped battery 102 via the exposed region 106. Therefore, after the plurality of battery units 10 are connected and fixed by bolts or other fasteners, the generated connection force is transferred to the pouch-shaped battery 102 through the protecting and radiating case 104, and the connection force is converted into the pretightening force applied to the pouch-shaped battery 102 when the protecting and radiating case 104 acts on the pouch-shaped battery 102, and the acting force applied to the pouch-shaped battery 102 by each protecting and radiating case 104 is also relatively consistent due to the same connection force, accordingly, the pretightening force applied to each pouch-shaped battery 102 in each battery unit 10 is also relatively consistent, and the consistency of the pretightening force applied to the pouch-shaped battery 102 is improved.
In this application, in order to achieve the exposure of the pouch-shaped battery 102 so as to achieve the direct contact between the protection heat dissipation case 104 and the pouch-shaped battery 102, in one embodiment, as shown in fig. 3, at least one battery cell 10 may be provided as a single-sided battery cell 20 in the battery module 1.
Specifically, as shown in fig. 4, the single-sided battery cell 20 includes a first support base 200, at least one first pouch-type battery 202, and a first protective heat dissipation case 204. The first protective heat dissipation case 204 is connected to a single side of the first support base 200, and supports the first pouch type battery 202 between the first support base 200 and the first protective heat dissipation case 204.
The first pouch type cells 202 may be provided in one, two or more, and when provided in plurality, the plurality of first pouch type cells 202 are stacked in the thickness direction thereof and all are provided at one side, i.e., the same side, of the first support base 200. The first protective heat dissipation case 204 is connected to the first support base 200 to support and fix each first pouch type battery 202. In the present embodiment, the number of the first pouch type batteries 202 is two.
The first support base 200 has an exposed region 2000 exposing the first pouch-type battery 202, and the exposed region 2000 may be formed by forming a through hole in the first support base 200. In this embodiment, the first support base 200 is configured as a hollow frame structure, and the hollow portion is formed as the exposed area 2000 of the single-sided battery cell 20.
It is easy to understand that a side surface of the first pouch type battery 202 of the single-sided battery unit 20 facing away from the first protective heat dissipation case 204 is exposed to the outside through the exposed area 2000, so that it is known that the protective heat dissipation case 104 of the battery unit 10 adjacent to the single-sided battery unit 20 can contact with the first pouch type battery 202 through the exposed area 2000.
As can be seen from the above description, the single-sided battery cell 20 not only facilitates the other battery cells 10 to apply the pre-tightening force to the first pouch-shaped battery 202, but also, since only one first protection and heat dissipation case 204 is provided in the single-sided battery cell 20, the number of the protection and heat dissipation cases 104 in the battery module 1 is correspondingly reduced, so that more space can be left for accommodating more battery cells 10 in the battery module 1, and thus the energy density of the battery module 1 can be improved.
Further, referring to fig. 2, when the battery units 10 are stacked in sequence, in order to avoid interference with the supporting seat 100, the heat dissipation protecting housing 104 may better contact the pouch-shaped battery 102 of the adjacent battery unit 10, the heat dissipation protecting housing 104 may include a body 1040 and a protruding portion 1042 protruding from the body 1040, and the protruding portion 1042 protrudes toward the adjacent battery unit 10, so that the heat dissipation protecting housing can more conveniently contact the first pouch-shaped battery 202 of the single-sided battery unit 20 via the exposed area 2000.
In an alternative embodiment, the outline of the exposed area 2000 may be matched with the outline of the protruding portion 1042, that is, if the outline of the exposed area 2000 is square, the outline of the protruding portion 1042 may also be square, so that the protruding portion 1042 and the exposed area 2000 may be conveniently matched, and the protruding portion 1042 may be conveniently contacted with the first pouch type battery 202. In addition, the size of the protruding portion 1042 may be increased as much as possible without interfering with the contour of the exposed region 2000, so as to increase the contact area between the protruding portion 1042 and the first pouch type battery 202. Meanwhile, the matching arrangement enables the battery module 1 to be compact in structure and higher in energy density, the protruding portion 1042 can be located in advance through the exposed area 2000, the battery module 1 is assembled simply and conveniently, and assembly efficiency is improved.
On the other hand, the protruding portion 1042 (more precisely, the protruding portion 1042 protrudes toward the surface of the first pouch type battery 202) may be at least partially attached to the first pouch type battery 202, the attaching arrangement may improve the stability when the protruding portion 1042 and the first pouch type battery 202 are in contact, and in addition, the attaching arrangement may increase the contact area between the protruding portion 1042 and the first pouch type battery 202, so that the damage of the first pouch type battery 202 caused by the concentration of the acting force at a certain place of the first pouch type battery 202 is not caused.
In this embodiment, the entire outer surface of the protruding portion 1042 is formed as a flat surface, and the flat surface is completely adhered to the outer surface of the first pouch-shaped battery 202.
In the single-sided battery cell 20, the first protective heat dissipation case 204 includes the protruding portion 2040, and the inner wall of the first protective heat dissipation case 204 facing the protruding portion 2040 has the receiving groove 2042, and the receiving groove 2042 may be formed simultaneously at the time of processing the protruding portion 2040 by punching, but is not limited thereto.
The first pouch type battery 202 may be accommodated in the accommodating groove 2042, and by providing the accommodating groove 2042, the inner space surrounded by the first protection heat dissipation case 204 and the first support base 200 may be increased so that more first pouch type batteries 202 may be accommodated in the accommodating space.
It should be noted that the profile of the accommodating groove 2042 may also be matched with the profile of the first pouch type battery 202, so that the space in the accommodating groove 2042 is fully utilized, and the structural arrangement is more reasonable.
After the arrangement, a smaller gap can be left between the side wall of the accommodating groove 2042 and the first pouch type battery 202, and the side wall of the accommodating groove 2042 can limit the first pouch type battery 202, so that the displacement of the first pouch type battery 202 in the accommodating groove 2042 is reduced, and the stability of the relative positions of the two is improved. For the contour matching receiving groove 2042 and the first pouch type cell 202, the side walls of the receiving groove 2042 may be simultaneously in positive engagement with the first pouch type cell 202 of the first pouch type cell 202 in two mutually perpendicular directions.
In the present embodiment, the two mutually perpendicular directions are the length direction (X direction in fig. 4) and the width direction (Y direction in fig. 4) of the outline shape of the first pouch type battery 202.
The "small gap" referred to herein refers to a basic size and a tolerance range selected according to the standard when the first pouch-type battery 202 is gap-fitted with the receiving recess 2042, and a person skilled in the art can make a selection according to the actual circumstances.
Further, referring to fig. 3 and 4, the first support base 200 includes a battery receiving groove 2002, and the battery receiving groove 2002 communicates with the receiving groove 2042 to collectively receive the first pouch type battery 202. At this time, the exposed region 2000 may be regarded as a through hole opened in the bottom wall of the battery receiving groove 2002.
In this embodiment, since the first support base 200 is provided in a hollow frame structure, the battery receiving groove 2002 may be formed by providing the first positioning support portion 2004 at a hollow portion, and specifically, the first support base 200 further includes the first positioning support portion 2004 extending from an inner wall of the hollow portion toward the center and a preset distance. Thus, the first positioning support 2004 and the frame of the first support base 200 together form a battery accommodating groove 2002. The first positioning support portion 2004 is a bottom wall of the battery accommodating groove 2002, and the frame forms a side wall of the battery accommodating groove 2002.
On the other side of the first positioning support portion 2004, the first positioning support portion 2004 and the frame of the first support base 200 are further formed with an expansion groove 2006, and similarly, the first positioning support portion 2004 is formed as a bottom wall of the expansion groove 2006, and the frame is formed as a side wall of the expansion groove 2006, whereby it is known that the expansion groove 2006 and the battery accommodating groove 2002 are arranged in the stacking direction of the battery cells 10 and are defined by the first positioning support portion 2004.
The expansion slots 2006 are open to one side of the adjacent battery cells 10 in the stacking order of the latter, which can accommodate at least a portion of the battery cells 10 adjacent to the single-sided battery cells 20, such as the protruding portion 1042, that is, the battery module 1 can add the battery cells 10 from the side where the expansion slots 2006 are located, to form a larger capacity battery module. When the extension groove 2006 accommodates the protruding portion 1042, the first support seat 200 and the protective heat dissipation case 104 of the adjacent battery cell 10 form a stacked arrangement, which improves the overall impact resistance of the battery module 1.
On the other hand, by providing the expansion groove 2006, the adjacent battery cells 10 accommodated in the expansion groove 2006 are not likely to be greatly displaced, and the stability of the assembly position can be improved.
In the single-sided battery cell 20, the first protective heat dissipation case 204 is detachably connected to the first support base 200. In one embodiment, the single-sided battery unit 20 includes a first clamping mechanism, and the first supporting base 200 and the first protection heat dissipation housing 204 are clamped and fixed by the first clamping mechanism. Specifically, the first support base 200 includes a first clamping protrusion 2008, the first protective heat dissipation housing 204 includes a first clamping hole 2044, and a clamping direction of the first clamping protrusion 2008 and the first clamping hole 2044 is consistent with a stacking direction of the battery unit 10.
In this embodiment, the first clamping protrusion 2008 and the first clamping hole 2044 together form a first clamping mechanism, and the clamping manner can be assembled and disassembled conveniently, which is beneficial to improving the assembly efficiency of the battery unit 10. Of course, the first supporting base 200 and the first protective heat dissipation housing 204 may be connected by bolts or other manners.
A portion of the battery cells 10 may also be configured as a double-sided battery cell, specifically, a double-sided battery cell including a second support base, at least one second pouch-type battery, and two second protective heat dissipation cases separately provided. The two second protection heat dissipation shells respectively cover the second bag-type batteries from two sides of the second supporting seat, and clamp the second bag-type batteries on the second supporting seat.
Also, the second pouch type cells may be provided in one, two or more, and when provided in plurality, the plurality of second pouch type cells are stacked in the thickness direction thereof, and may be respectively provided at both sides of the second support base. In the present embodiment, the second pouch type battery is provided in two, but is not limited thereto.
One of the two second protective heat dissipation cases may be provided to include a body and a protruding portion protruding from the body, or both of the two second protective heat dissipation cases may be provided to include a protruding portion that may directly contact the first pouch type battery 202 in the single-sided battery cell 20 through the exposed region 2000 when stacked.
According to the above description, the double-sided battery cell covers the surface of the second pouch type battery through the two second protective heat dissipation cases separately provided, reducing the risk of breakage of the second pouch type battery.
In the double-sided battery unit, each second protective heat dissipation housing and the second supporting seat can also be detachably connected. In an embodiment, the double-sided battery unit includes a second clamping mechanism, and the second supporting seat and each second protection heat dissipation shell are clamped and fixed by the second clamping mechanism.
Specifically, the second supporting seat includes a second clamping protrusion, wherein one of the second protective heat dissipation shells includes a second clamping hole, and a clamping direction of the second clamping protrusion and the second clamping hole is consistent with a stacking direction of the battery unit 10.
Meanwhile, the two second protection heat dissipation shells are also clamped with each other, one of the second protection heat dissipation shells comprises a third clamping protrusion, the other second protection heat dissipation shell comprises a third clamping hole, and the clamping direction of the third clamping protrusion and the third clamping hole is consistent with the stacking direction of the battery unit 10.
In this embodiment, the second clamping protrusion, the second clamping hole, the third clamping protrusion and the third clamping hole together form a second clamping mechanism.
Further, in order to be convenient for realize joint and dismantlement between two second protection heat dissipation shells, the second supporting seat still is provided with the depressed part of dodging second joint mechanism. Specifically, the joint department of third joint arch and third draw-in hole is located the top of second supporting seat, and when third joint arch and third draw-in hole carry out the joint or release the joint, in order to avoid third joint arch to take place to interfere with the second supporting seat, the second supporting seat is provided with the depressed part, and this depressed part forms and dodges the space, and the protruding holding of third joint after the joint is in this depressed part, can provide the activity space for the protruding holding of third joint from this.
In a specific embodiment, please continue to refer to fig. 1, the battery module 1 may include a plurality of single-side battery cells 20 and a double-side battery cell, when stacking, the plurality of single-side battery cells 20 are adjacently disposed, the double-side battery cell is located at the outermost side of the stacking direction, and the single-side battery cell 20 and the double-side battery cell are sequentially stacked at the exposed side of the first pouch-shaped battery 202. The assembled battery module 1, wherein the two-sided battery cells deviate from one of the second protective heat dissipation cases of the single-sided battery cells 20 to serve as the outermost end plate of the battery module 1, so that the use of the end plate can be omitted, the energy density of the battery module 1 is improved, and meanwhile, all the pouch-shaped batteries 102 are covered by the protective heat dissipation case 104, so that the strength of the battery module 1 is also greatly improved.
It is noted that, for the embodiment in which the single-sided battery cell 20 and the double-sided battery cell each include two pouch-type batteries 102, each pouch-type battery 102 can radiate heat through one protective heat-radiating case 104, which improves both the heat radiation efficiency and the energy density of the battery module 1.
For the battery cells 10, each battery cell 10 may further include an elastic cushion 108, the elastic cushion 108 being disposed between adjacent pouch-type batteries 102, and when the pouch-type batteries 102 expand, the elastic cushion 108 is contracted and deformed by the expansion force, so that it is possible to provide a space to accommodate the expansion amount of the pouch-type batteries 102.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. A battery module comprising at least two stacked battery cells, each of the battery cells comprising:
a support base;
at least one pouch-type battery; and
protecting the heat dissipation shell;
the protective heat dissipation shell is connected with the supporting seat to form an accommodating space, the bag-type battery is accommodated in the accommodating space,
at least one battery unit is provided with an exposed area exposing the pouch-shaped battery, one side surface of the pouch-shaped battery in at least one battery unit, which is away from the protective heat dissipation shell, is exposed to the outside through the exposed area, and the protective heat dissipation shell of the adjacent battery unit is contacted with the pouch-shaped battery through the exposed area.
2. The battery module of claim 1, wherein at least one of the battery cells is provided as a single-sided battery cell comprising:
a first support base;
at least one first pouch-type battery; and
a first protective heat dissipation housing;
the first protection heat dissipation shell is connected with one side of the first supporting seat,
the first support seat is provided with an exposed area exposing the first pouch type battery, and the adjacent battery units are contacted with the first pouch type battery through the exposed area.
3. The battery module according to claim 2, the protective heat dissipation case includes a body and a protrusion protruding from the body, the protrusion being in contact with the first pouch type battery of the single-sided battery cell.
4. The battery module of claim 3, wherein the profile of the exposed region matches the profile of the tab.
5. The battery module of claim 3, wherein the protruding portion in contact is at least partially fitted to the first pouch-shaped battery.
6. The battery module of claim 2, wherein the battery module further comprises a double-sided battery cell comprising:
a second support base;
at least one second pouch-type battery; and
two second protection heat dissipation shells which are arranged in a split manner;
and each second protection heat dissipation shell clamps the second bag-type battery from two sides of the second supporting seat respectively.
7. The battery module of claim 6, wherein at least one of the two second protective heat dissipation cases includes a body and a protrusion that is in direct contact with the first pouch type battery through the exposed region.
8. The battery module according to claim 6, wherein the single-sided battery cells are provided in plurality and stacked, and the double-sided battery cells are provided at the outermost side in the stacking direction of the battery module.
9. The battery module of claim 3, wherein the first support base includes a battery receiving groove, the first pouch-shaped battery is received in the battery receiving groove, and a through hole is formed in a bottom wall of the battery receiving groove to form the exposed region.
10. The battery module according to claim 9, wherein the first support base further includes an expansion groove open to one side of the adjacent battery cells, the expansion groove and the battery receiving groove being arranged in the stacking direction of the battery cells and communicating with the battery receiving groove through the through-hole, the protruding portion of the adjacent battery cells being received in the expansion groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810756867.8A CN108899448B (en) | 2018-07-11 | 2018-07-11 | Battery module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810756867.8A CN108899448B (en) | 2018-07-11 | 2018-07-11 | Battery module |
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| CN108899448A CN108899448A (en) | 2018-11-27 |
| CN108899448B true CN108899448B (en) | 2023-12-29 |
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| CN110492041A (en) * | 2019-09-19 | 2019-11-22 | 刘杰林 | A kind of new type explosion proof combustion lithium ion battery |
| WO2021199592A1 (en) * | 2020-03-31 | 2021-10-07 | 三洋電機株式会社 | Battery module |
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| KR20160150514A (en) * | 2015-06-22 | 2016-12-30 | 주식회사 엘지화학 | Battery Module |
| KR20170043321A (en) * | 2015-10-13 | 2017-04-21 | 주식회사 엘지화학 | Battery Module improved heat conductive structure |
| KR20180013460A (en) * | 2016-07-29 | 2018-02-07 | 박동식 | Battery apparatus |
| CN207116550U (en) * | 2017-08-31 | 2018-03-16 | 宁德时代新能源科技股份有限公司 | Fixed mount, battery unit and battery modules |
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| KR100870355B1 (en) * | 2007-07-19 | 2008-11-25 | 삼성에스디아이 주식회사 | Pouch type battery pack |
| KR101450274B1 (en) * | 2010-12-13 | 2014-10-23 | 에스케이이노베이션 주식회사 | Cell Case for Secondary Battery |
| KR101816813B1 (en) * | 2010-12-30 | 2018-01-11 | 에스케이이노베이션 주식회사 | Case of pouched type cell |
| KR101447057B1 (en) * | 2012-01-26 | 2014-10-07 | 주식회사 엘지화학 | Battery Module Having Heat Dissipation Mounting Member for Dissipating Heat And Mounting Battery cell |
| KR20150019728A (en) * | 2013-08-14 | 2015-02-25 | 삼성에스디아이 주식회사 | Battery pack |
| KR102051109B1 (en) * | 2015-10-08 | 2019-12-02 | 주식회사 엘지화학 | Battery Module |
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|---|---|---|---|---|
| KR20160150514A (en) * | 2015-06-22 | 2016-12-30 | 주식회사 엘지화학 | Battery Module |
| KR20170043321A (en) * | 2015-10-13 | 2017-04-21 | 주식회사 엘지화학 | Battery Module improved heat conductive structure |
| KR20180013460A (en) * | 2016-07-29 | 2018-02-07 | 박동식 | Battery apparatus |
| CN207116550U (en) * | 2017-08-31 | 2018-03-16 | 宁德时代新能源科技股份有限公司 | Fixed mount, battery unit and battery modules |
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