CN220544050U - Battery case and battery with same - Google Patents
Battery case and battery with same Download PDFInfo
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- CN220544050U CN220544050U CN202322043298.1U CN202322043298U CN220544050U CN 220544050 U CN220544050 U CN 220544050U CN 202322043298 U CN202322043298 U CN 202322043298U CN 220544050 U CN220544050 U CN 220544050U
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- 238000000034 method Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 abstract description 21
- 238000007599 discharging Methods 0.000 abstract description 17
- 238000001125 extrusion Methods 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery shell and a battery with the same, wherein the battery shell is provided with a containing cavity, a battery core is arranged in the containing cavity, the battery shell comprises side plates, each side plate comprises a first side plate and a second side plate arranged on the inner side of the first side plate, at least part of the second side plate is sunken towards the inner side so as to form a cavity with the first side plate, and a through hole is formed in the second side plate and is used for communicating the cavity with the containing cavity. According to the battery case, the second side plate is arranged, when the battery core is in a charging and discharging process or in a high-temperature environment, the battery core can generate heat and expand, and at the moment, the battery core can extrude the second side plate to enable the second side plate to be compressed towards the inside of the cavity, so that the battery core cannot be damaged by large extrusion force, the safety of a battery is better improved, in addition, in the charging and discharging process of the battery, the battery core can generate gas, the gas can enter the cavity from the accommodating cavity through the through hole, and the explosion-proof valve is prevented from being opened due to overlarge internal pressure of the battery, so that the safety of the battery is improved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery shell and a battery with the same.
Background
The lithium ion battery has the advantages of high energy density, high capacity, small volume, environmental protection and the like, and is widely applied to the field of new energy automobiles at present. In order to ensure the safety performance and the cycle life of the lithium battery, certain space is reserved in the lithium battery, so that certain space is reserved for the expansion of the pole pieces in the charging and discharging process, and the situation that the space is too large, the spacing between the pole pieces is large, the internal resistance is large, and the capacity is not fully exerted in the charging and discharging process is avoided.
At present, most lithium batteries adopt square aluminum shell structures, and in the charging and discharging processes, a clamp is adopted to restrain the batteries so as to avoid expansion; particularly, in the formation process, the gas yield of the battery is high, the battery needs to be discharged in time, and bad interfaces of pole pieces are avoided, so that the safety performance of the battery is prevented from being influenced; however, after pack packaging of the battery pack, the battery core expands in the circulation process due to no restraint effect, so that the circulation performance of the battery is affected, the internal pressure is increased due to gas production in the circulation process, and the explosion-proof valve is opened to cause safety accidents in severe cases.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery case, which can better avoid the explosion-proof valve opening caused by the excessive internal pressure of the battery, and thus, the safety accident can be caused, and the safety of the battery can be improved.
According to the battery case provided by the embodiment of the utility model, the battery case is provided with the accommodating cavity, the battery core is arranged in the accommodating cavity, the battery case comprises the side plates, the side plates comprise the first side plate and the second side plate arranged on the inner side of the first side plate, at least part of the second side plate is sunken towards the inner side so as to form a cavity with the first side plate, and the second side plate is provided with the through hole which is used for communicating the cavity with the accommodating cavity.
According to the battery case, the cavity is formed between the second side plate and the first side plate, the through hole is formed in the second side plate, when the battery core is in a charging and discharging process or in a high-temperature environment, the battery core possibly generates heat and expands, at the moment, the battery core can extrude the second side plate, so that the second side plate is compressed towards the inside of the cavity, the battery core cannot be damaged by larger extrusion force, the safety of a battery is better improved, in addition, in the charging and discharging process of the battery, the battery core can generate gas, the gas can enter the cavity through the through hole from the accommodating cavity, the explosion-proof valve is prevented from being opened due to overlarge pressure in the battery, and the safety accident is caused, so that the safety of the battery is improved.
In addition, the battery case according to the present utility model may have the following additional technical features:
in some embodiments of the present utility model, the second side plate includes a first connection plate, a second connection plate, and a third connection plate, the first connection plate being spaced apart from the first side plate in a direction from the side plate to the battery cell, both sides of the first connection plate being connected to the first side plate through the second connection plate and the third connection plate, respectively, to construct the cavity between the first connection plate, the second connection plate, the third connection plate, and the first side plate.
In some embodiments of the present utility model, the first connection plate is provided with the through hole, and the battery case further includes a liquid absorbing film attached to an inner side of the through hole.
In the present utility modelIn some embodiments of (2) the first connecting plate has a plurality of through holes, wherein the area S of the liquid absorbing film 1 Area and S of a plurality of the through holes 2 And the area S of the first connecting plate 3 The method comprises the following steps: 1/3S 3 ≤S 2 ≤3/4S 3 ，S 2 ≤S 1 ≤6/5S 2 。
In some embodiments of the present utility model, the battery cell includes a plurality of pole pieces, the plurality of pole pieces are stacked along a first direction, two side plates are provided, in the first direction, the two side plates are respectively located at two sides of the battery cell, and the first connecting plate is a flat plate and is parallel to the pole pieces.
In some embodiments of the present utility model, the first connecting plate is a rectangular plate extending along a second direction and a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other, and the first connecting plate has a length value L in the second direction 1 The pole piece has a length value L 2 In the third direction, the first connection plate has a height value H 1 The pole piece has a height value H 2 The method comprises the following steps: h 2 ＜H 1 ≤1.05H 2 ，L 2 ＜L 1 ≤1.05L 2 。
In some embodiments of the present utility model, the second connecting plate and the third connecting plate are curved plates curved around a line where the third direction is located, and a central angle α of the curved plates 1 Meets the alpha of 60 degrees or less 1 ≤90°。
In some embodiments of the present utility model, the sides of the second side plate are respectively connected to the sides of the first side plate in a second direction, and the sides of the second side plate are respectively connected to the top plate and the bottom plate of the battery case in a third direction, wherein the second direction and the third direction are perpendicular to each other.
In some embodiments of the present utility model, the second side plate has a plurality of through hole areas disposed at intervals, and each through hole area is provided with a plurality of through holes, where each through hole area is in a strip shape extending along a second direction or a third direction, and the second direction and the third direction are perpendicular to each other.
The utility model also provides a battery with the battery shell.
According to the battery shell, the battery core is prevented from being damaged due to the fact that the battery shell is arranged, the safety of the battery is better improved, the battery core can generate gas in the charging and discharging process, the gas can enter the cavity through the through hole from the containing cavity, the explosion-proof valve is prevented from being opened due to overlarge pressure in the battery, and safety accidents are caused, so that the safety of the battery is improved, the energy density is higher, and the battery is convenient to install.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of a first angle structure of a battery case according to an embodiment of the present utility model.
Fig. 2 is a schematic view of a second angle structure of a battery case according to an embodiment of the present utility model.
Fig. 3 is a schematic view of a structure of a third angle of a battery case according to an embodiment of the present utility model.
Fig. 4 is a schematic structural view of a battery according to an embodiment of the present utility model.
Fig. 5 is a cross-sectional view at a of a battery according to an embodiment of the present utility model.
Reference numerals:
the battery case 100 is assembled with a battery,
a first connecting plate 1, a second connecting plate 2, a third connecting plate 3, a through hole area 4, a liquid absorbing film 5, an electric core 6, a first side plate 7, a cavity 8, an arc plate 9,
and a battery 200.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
A battery case 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 5.
Referring to fig. 1-5, the battery case 100 has a receiving cavity, the battery cell 6 is disposed in the receiving cavity, the battery case 100 includes side plates, the side plates include a first side plate 7 and a second side plate disposed inside the first side plate 7, that is, the first side plate 7 is an outer side plate, which can provide structural support for the battery case 100, at least a portion of the second side plate is recessed toward the inner side to form a cavity 8 with the first side plate 7, a through hole is disposed on the second side plate, the through hole is used for communicating the cavity 8 with the receiving cavity, specifically, when the battery cell 6 is in a charging and discharging process or in a high temperature environment, the battery cell 6 may generate heat and expand, at this time, the battery cell 6 may squeeze the second side plate, so that the second side plate compresses toward the inside of the cavity 8, so that the battery cell 6 may not receive a large squeezing force to damage it, thereby better improving the safety of the battery 200, and the battery cell 6 may generate gas in the charging and discharging process, which may enter the cavity 8 through the receiving cavity through the through hole, thereby avoiding the explosion-proof valve from being opened due to an excessive internal pressure of the battery 200, resulting in an accident of the occurrence, thereby improving the safety of the battery 200.
Compared with the traditional battery case 100, the traditional battery case 100 is not provided with the second side plate, the battery 200 is extruded with the side plate in the charging and discharging process or under the high-temperature environment, the battery 6 can expand, larger pressure can be generated on the battery 6, and in the charging and discharging process, the battery 6 can generate gas, the internal pressure of the battery 200 is further increased, the explosion-proof valve is easy to open, the occurrence of safety accidents is caused, the battery case 100 of the application is provided with the second side plate, the cavity 8 is formed between the second side plate and the first side plate 7, through holes are formed in the second side plate, when the battery 6 is in the charging and discharging process or under the high-temperature environment, the battery 6 can generate heat and expand, and at the moment, the battery 6 can extrude the second side plate, so that the second side plate is compressed towards the cavity 8, the battery 6 can not be damaged by larger extrusion force, the safety of the battery 200 is better improved, and the battery 200 can generate gas in the charging and discharging process, the explosion-proof valve is prevented from being caused to open by the explosion-proof valve due to the fact that the internal pressure of the battery 200 is excessively large through the through holes.
Therefore, according to the battery case 100 of the embodiment of the utility model, the cavity 8 is formed between the second side plate and the first side plate 7, the through hole is formed in the second side plate, when the battery cell 6 is in a charging and discharging process or in a high-temperature environment, the battery cell 6 may generate heat and expand, and the battery cell 6 can squeeze the second side plate at the moment so that the second side plate is compressed towards the inside of the cavity 8, so that the battery cell 6 cannot be damaged by larger extrusion force, the safety of the battery 200 is better improved, and in the charging and discharging process of the battery 200, the battery cell 6 can generate gas which can enter the cavity 8 from the accommodating cavity through the through hole, so that the explosion-proof valve is prevented from being opened due to overlarge internal pressure of the battery 200, and the safety accident is caused, and the safety of the battery 200 is improved.
In some embodiments of the present utility model, referring to fig. 1-5, the second side plate includes a first connecting plate 1, a second connecting plate 2 and a third connecting plate 3, in the direction from the side plate to the battery cell 6, the first connecting plate 1 is spaced apart from the first side plate 7, two sides of the first connecting plate 1 are respectively connected with the first side plate 7 through the second connecting plate 2 and the third connecting plate 3, so that a cavity 8 is formed between the first connecting plate 1, the second connecting plate 2, the third connecting plate 3 and the first side plate 7, the first connecting plate 1, the second connecting plate 2 and the third connecting plate 3 can further improve the structural strength of the battery case 100, when the battery cell 6 expands, the first connecting plate 1 can be extruded to release pressure, and the second connecting plate 2 and the third connecting plate 3 can better support the first connecting plate 1, after the battery cell 6 is restored to the original volume, the first connecting plate 1 can rebound to the original position to continue to limit the battery cell 6, so that the battery cell 6 has better stability, and the safety of the battery 200 is improved.
In some embodiments of the present utility model, referring to fig. 1 to 5, first, a through hole is formed on the first connecting plate 1, so that the fluidity of the air in the battery case 100 can be enhanced, the air generated by the battery 6 can reach the cavity 8 through the through hole from the accommodating cavity, so as to reduce the pressure applied to the battery 6, the battery case 100 further includes a liquid absorbing film 5, the liquid absorbing film 5 is attached to the inner side of the through hole, an electrolyte can be injected into the cavity 8, when the battery 6 expands, the first connecting plate 1 is extruded, the electrolyte in the cavity 8 is extruded to infiltrate into the cavity 8 from the liquid absorbing film 5, so that the pressure is released for the battery 6, the safety of the battery 200 is improved, and the electrolyte can be replenished for the battery 6, so that the normal operation of the battery 200 is ensured.
In some embodiments of the present utility model, referring to fig. 1 to 5, a plurality of through holes are formed in the first connection plate 1, wherein an area S1 of the liquid-absorbing film 5, an area of the plurality of through holes, and an area S2 of the plurality of through holes and an area S3 of the first connection plate 1 satisfy: 1/3S 3.ltoreq.S2.ltoreq.3/4S 3, S2.ltoreq.S1.ltoreq.6/5S 2, firstly, the proportion of the total area S2 of the through holes to the area S3 of the first connecting plate 1 is between 1/3 and 3/4, this design ensures that the first connecting plate 1 has sufficient ventilation capacity to carry out the passage of the gas in the accommodating cavity to the cavity 8, but does not affect the structural strength of the first connecting plate 1 because of the larger through hole area, secondly, the area S1 of the liquid absorbing film 5 is larger than the total area S2 of the through holes, but is not more than 1.2 times thereof, which means that the size of the liquid absorbing film 5 is enough to cover all the through holes, prevent the electrolyte in the cavity 8 from flowing into the accommodating cavity at will, affecting the normal operation of the cell 6, but not too much, so as to save the cost.
In some embodiments of the present utility model, referring to fig. 1 to 5, the battery core 6 is stacked by a plurality of pole pieces along the first direction, so that the space can be effectively utilized, the energy density of the battery core 6 is improved, the cruising ability and performance of the electric equipment are improved, the two side plates are respectively located at two sides of the battery core 6 along the first direction, the battery core 6 can be protected from the direct action of external force by the layout design, the impact resistance and durability of the battery 200 are improved, meanwhile, the air permeability of the side plates can be further improved, the pressure inside the battery case 100 is effectively reduced, the safety of the battery 200 is improved, the first connecting plate 1 is a flat plate and is parallel to the pole pieces, so that the first connecting plate 1 can better adapt to and match the shape of the battery core 6, and the space utilization is facilitated to be improved.
In some embodiments of the present utility model, referring to fig. 1 to 5, the first connection plate 1 is a rectangular plate body extending along a second direction and a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other, in the second direction, the first connection plate 1 has a length value L1, the pole piece has a length value L2, in the third direction, the first connection plate 1 has a height value H1, the pole piece has a height value H2, and the following are satisfied: h2 is smaller than H1 and smaller than 1.05H2, L2 is smaller than L1 and smaller than 1.05L2, that is, the dimension of the first connecting plate 1 is slightly larger than the dimension of the pole piece in the length value and the height value, so that the first connecting plate 1 can be ensured to completely cover the pole piece, when the battery cell 6 expands, the side faces in the first direction can be all abutted to the first connecting plate 1, so that the stress of the battery cell 6 is uniform, the damage of the battery cell 6 caused by concentrated stress can be avoided, the safety of the battery 200 is improved, and meanwhile, excessive space is not occupied or unnecessary weight is not increased.
In some embodiments of the present utility model, referring to fig. 1-5, the second connecting plate 2 and the third connecting plate 3 are arc plates 9 bent around a straight line where the third direction is, the central angle α1 of the arc plates 9 satisfies 60 ° or less than or equal to α1 or less than or equal to 90 °, firstly, the arc plates 9 are more stable and firm in physical structure than right angles or sharp corner plates, can better withstand external force, including internal pressure from volume expansion of the battery cells 6, thereby improving safety of the battery 200, secondly, the shape of the arc plates 9 connected with the first connecting plate 1 is smoother, the possibility of forming sharp edges or corners is reduced, which helps to reduce the risk of damage to the battery cells 6, and the central angle α1 of the arc plates 9 satisfies 60 ° or less than or equal to α1 or less than or equal to 90 °, and the radian within the range can ensure the space of the accommodating cavity and the strength of the second side plates, the radian is too large, which may lead to a reduction in effective space of the accommodating cavity, and a reduction in energy density of the battery cells 6, and the radian is too small may affect the strength and stability of the arc plates 9.
In some embodiments of the present utility model, referring to fig. 1-5, in the second direction, the sides of the second side plate are respectively connected with the sides of the first side plate 7, and in the third direction, the sides of the second side plate are respectively connected with the top plate and the bottom plate of the battery case 100, wherein the second direction and the third direction are perpendicular to each other, firstly, the design realizes the tight connection of several parts of the battery case 100, so that the overall structure of the battery 200 is more stable, the battery 6 is protected, the safety of the battery 200 is improved, in the second direction, the connection of the second side plate and the first side plate 7 is beneficial to maintain the stability of the whole battery 200, the limit effect on the battery 6 is ensured, the battery 200 cannot be lost due to the displacement of the battery 6 in the use process, and in the third direction, the connection of the second side plate and the top plate and the bottom plate of the battery case 100 can provide more stable support, the risk of the battery 200 in operation is reduced, and the design further, the battery 200 is more stable in shape and convenient to install in the device and in the third direction due to the second direction and the third direction.
In some embodiments of the present utility model, referring to fig. 1 to 5, the second side plate has a plurality of through-hole regions 4 spaced apart from each other, and each through-hole region 4 is provided with a plurality of through-holes, wherein each through-hole region 4 is in the shape of a bar extending in the second direction or the third direction, and wherein the second direction and the third direction are perpendicular to each other, firstly, the plurality of spaced apart through-hole regions 4 effectively increase the area of gas flow, so that the gas generated by the battery 6 during operation can be more rapidly discharged through the through-holes, thereby reducing the pressure inside the battery 200, improving the safety of the battery 200, and secondly, the through-hole regions 4 are in the shape of a bar extending in the second direction or the third direction, so that the distribution of the through-holes inside the battery 200 is more uniform, which is beneficial to not only maintaining the temperature balance inside the battery 200, but also avoiding the safety problem caused by the local excessive temperature, and furthermore, by maintaining a certain spacing between the through-hole regions 4, the overall strength of the second side plate can be avoided, because the structure of the through-holes with higher density is weakened.
The present utility model also proposes a battery 200 having the battery case 100.
According to the battery 200 provided by the utility model, the battery shell 100 is arranged, so that the battery cell 6 is not damaged by larger extrusion force, the safety of the battery 200 is better improved, in addition, the battery cell 6 can generate gas in the charging and discharging process of the battery 200, the gas can enter the cavity 8 through the through hole from the accommodating cavity, the explosion-proof valve is prevented from being opened due to overlarge internal pressure of the battery 200, and the safety accident is caused, so that the safety of the battery 200 is improved, the energy density is higher, and the installation is convenient.
Other constructions and operations of the battery case 100 according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail herein.
In the description of the present specification, reference to the terms "some embodiments," "optionally," "further," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery case (100), characterized in that the battery case (100) has a housing cavity in which an electric core (6) is disposed, the battery case (100) comprising:
the side plate comprises a first side plate (7) and a second side plate arranged on the inner side of the first side plate (7), at least part of the second side plate is sunken towards the inner side so as to form a cavity (8) with the first side plate (7), and a through hole is formed in the second side plate and used for communicating the cavity (8) with the accommodating cavity.
2. The battery case (100) according to claim 1, wherein the second side plate comprises a first connecting plate (1), a second connecting plate (2) and a third connecting plate (3), the first connecting plate (1) is spaced apart from the first side plate (7) in the direction from the side plate to the battery cell (6), and both sides of the first connecting plate (1) are connected with the first side plate (7) through the second connecting plate (2) and the third connecting plate (3), respectively, to construct the cavity (8) between the first connecting plate (1), the second connecting plate (2), the third connecting plate (3) and the first side plate (7).
3. The battery case (100) according to claim 2, wherein the through hole is provided in the first connection plate (1), the battery case (100) further comprises a liquid absorbing film (5), and the liquid absorbing film (5) is attached to the inner side of the through hole.
4. A battery case (100) according to claim 3, wherein a plurality of the through holes are provided in the first connection plate (1), wherein the area S of the liquid absorbing film (5) 1 Area and S of a plurality of the through holes 2 And the area S of the first connecting plate (1) 3 The method comprises the following steps: 1/3S 3 ≤S 2 ≤3/4S 3 ，S 2 ≤S 1 ≤6/5S 2 。
5. The battery case (100) according to claim 2, wherein the battery cell (6) includes a plurality of pole pieces, the plurality of pole pieces being stacked in a first direction, the side plates being provided in two, in the first direction, two of the side plates being located on both sides of the battery cell (6), respectively, and the first connection plate (1) being a flat plate and being parallel to the pole pieces.
6. The battery case (100) according to claim 5, wherein the first connection plate (1) is a rectangular plate body extending in a second direction and a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other, and the first connection plate (1) has a length value L in the second direction 1 The pole piece has a length value L 2 In the third direction, the first and second directions,the first connection plate (1) has a height value H 1 The pole piece has a height value H 2 The method comprises the following steps: h 2 ＜H 1 ≤1.05H 2 ，L 2 ＜L 1 ≤1.05L 2 。
7. The battery case (100) according to claim 2, wherein the second connecting plate (2) and the third connecting plate (3) are each an arc plate (9) bent around a straight line where a third direction is located, and a central angle α of the arc plate (9) 1 Meets the alpha of 60 degrees or less 1 ≤90°。
8. The battery case (100) according to claim 1, wherein the side edges of both sides of the second side plate are connected to the side edges of both sides of the first side plate (7), respectively, in a second direction, and the side edges of both sides of the second side plate are connected to the top plate and the bottom plate of the battery case (100), respectively, in a third direction, wherein the second direction and the third direction are perpendicular to each other.
9. The battery case (100) according to claim 1, wherein the second side plate has a plurality of through hole regions (4) disposed at intervals, each of the through hole regions (4) being provided with a plurality of the through holes, wherein each of the through hole regions (4) is in a stripe shape extending in a second direction or a third direction, wherein the second direction and the third direction are perpendicular to each other.
10. A battery (200) characterized by comprising a battery case (100) according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322043298.1U CN220544050U (en) | 2023-07-31 | 2023-07-31 | Battery case and battery with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322043298.1U CN220544050U (en) | 2023-07-31 | 2023-07-31 | Battery case and battery with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220544050U true CN220544050U (en) | 2024-02-27 |
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ID=89967903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322043298.1U Active CN220544050U (en) | 2023-07-31 | 2023-07-31 | Battery case and battery with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220544050U (en) |
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2023
- 2023-07-31 CN CN202322043298.1U patent/CN220544050U/en active Active
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