CN219476821U - Battery shell, battery and electric equipment - Google Patents
Battery shell, battery and electric equipment Download PDFInfo
- Publication number
- CN219476821U CN219476821U CN202320496400.0U CN202320496400U CN219476821U CN 219476821 U CN219476821 U CN 219476821U CN 202320496400 U CN202320496400 U CN 202320496400U CN 219476821 U CN219476821 U CN 219476821U
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- shell
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- 239000000463 material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000012858 resilient material Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 2
- 239000011257 shell material Substances 0.000 description 51
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 239000002210 silicon-based material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- -1 aluminum ion Chemical class 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
Abstract
The utility model belongs to the technical field of batteries, and particularly relates to a battery shell, a battery and electric equipment. The battery shell comprises a bottom plate; the side plate is arranged around the bottom plate and comprises two oppositely arranged first side plates and two oppositely arranged second side plates; the limiting device is arranged on one side, close to the battery cell, of one first side plate, and comprises a stress plate and two limiting plates; the stress plate is close to one end of the second side plate, one limiting plate is movably mounted on the stress plate, the stress plate is movable along the thickness direction of the stress plate, and the stress plate and the first side plate form an expansion space with adjustable thickness. The utility model has simple structure and low cost; the secondary battery using the battery shell has the advantages that the surface of the negative electrode plate is smooth after charging, obvious wrinkling defects are avoided, and the expansion of the shell is avoided.
Description
Technical Field
The utility model belongs to the technical field of batteries, and particularly relates to a battery shell, a battery and electric equipment.
Background
Batteries are one of the important carriers of energy sources at present, and with the increasing use direction, miniaturization and high-energy batteries become a trend of development.
As the demand for battery capacity in life increases, energy density becomes one of the factors restricting the development thereof. The capacity of the current high-end graphite anode material is exerted at 360mAh/g, the energy density of the matched anode material can only be 260Wh/Kg, and the design limit is about 280 Wh/Kg. Increasing the negative electrode capacity is an effective means of increasing the battery energy density, and therefore silicon-based negative electrodes with high gram capacity are an effective option.
The silicon-based negative electrode has high gram capacity, but as the alloying degree of lithium ions and silicon is deepened, the volume expansion of the silicon-based material is rapidly increased, the volume expansion of the conventional silicon oxide material can reach 180 percent, the volume expansion of the silicon material can reach 300 percent, and the volume expansion brings great challenges to the strength of the material, the electrode plate design and the cell design.
In the battery, because the volume change of the pole piece after charging is considered, a certain gap is specially designed and reserved when the battery core is assembled into the shell, so that a space is reserved for the volume change during full charging, and the situation that the battery shell deforms due to expansion of the pole piece and the battery core is ultra-thick is avoided.
For a silicon-based material system, because of the large volume expansion, a larger space is reserved for full charge expansion of the pole piece in the design of the battery cell, and the pole piece is free to expand and uneven stress can occur, so that the negative pole piece is wrinkled, and adverse phenomena such as black spots, lithium precipitation and the like occur in the later charging process.
Patent application 2020114020595 discloses a battery housing comprising an outer shell; an inner shell disposed within the outer shell, an expansion space being formed between the outer shell and the inner shell; the expansion device comprises an outer shell and an inner shell, wherein at least one of the outer shell and the inner shell is provided with a limiting groove and/or a template, the outer shell is connected with the inner shell in a clamping mode, and a buffer frame is arranged in the expansion space. The technical problem solved by the method is that the expansion of the battery shell can not solve the problem of pole piece expansion wrinkling; meanwhile, an integral inner shell structure is adopted, so that the cost is high, and the heat dissipation is not facilitated; and the end of the inner shell structure is directly connected with the outer shell, and the expansion of the inner shell directly affects the outer shell, so that the risk of deformation of the outer shell still exists.
In the prior art, the technical means for solving the problem of cell expansion is adopted by the elastic piece, but when the cell is extruded by the pole piece expansion, the acting surface of the elastic piece is an arc surface, so that the middle of the pole piece has small force, and the two sides are stressed greatly, so that the uneven stress of the pole piece is caused, and the uniformity of the internal stress caused by the pole piece expansion cannot be ensured.
Disclosure of Invention
The utility model aims to solve the problems, and provides a battery shell, a battery and electric equipment, wherein a limiting device is arranged in the battery shell, the limiting device is directly contacted with the maximum side surface of an electric core after the battery is assembled, and when charging is started, a pole piece expands and extrudes the limiting device, and the limiting device reacts to the pole piece, so that the expansion of the pole piece can be limited, and the internal stress caused by the expansion of the pole piece is more uniform. However, after the battery is fully charged, the limiting device can leave a space, and the shape deformation of the battery shell caused by the expansion stress of the pole piece can not influence the quality of the battery.
According to the technical scheme of the utility model, the battery shell comprises
A bottom plate;
the side plate is arranged around the bottom plate and comprises two oppositely arranged first side plates and two oppositely arranged second side plates, and the first side plates are connected with the second side plates; the bottom plate and the side plates together form an accommodating space for accommodating a battery cell, the battery cell is provided with two opposite maximum side surfaces (battery cell large surfaces), and each first side plate is opposite to each maximum side surface;
the limiting device is arranged on one side, close to the battery cell, of one first side plate, and comprises a stress plate and two limiting plates;
the stress plate is close to one end of the second side plate, one limiting plate is movably mounted on the stress plate, the stress plate is movable along the thickness direction of the stress plate, and the stress plate and the first side plate form an expansion space with adjustable thickness.
Specifically, the battery shell is made of one of an aluminum shell, a steel shell and a shell material of a secondary battery which can be used in the industry, and is preferably an aluminum shell; when the stress plate is stressed, the stress plate moves towards the first side plate, and the thickness of the expansion space is thinned.
According to the utility model, the limiting device can apply acting force to the large surface of the battery core during battery formation and capacity division, and preferably, one side, close to the battery core, of each of the two first side plates is provided with the limiting device, the stress plate needs to cover the large surface of the whole battery core, and the whole large-surface pole piece of the battery core can be ensured to be stressed when the stress plates are in contact.
Further, one end of the limiting plate is fixed on the first side plate, and the other opposite end of the limiting plate is fixed on the second side plate, so that the limiting plate, the first side plate and the second side plate form a triangular support stable structure.
Further, the limiting plate is fixed between the first side plate and the second side plate through welding or adhesion.
Further, the limiting plate is made of aluminum, steel, ceramic materials or plastics.
Specifically, when the limiting plate is fixed in the shell in a welding manner, the limiting plate is made of the same material as the battery shell or a material convenient to weld with the shell; when the limiting plate is fixed on the shell in an adhesive manner, the limiting plate can be made of aluminum, steel, carbon composite materials, ceramic materials or plastics.
Further, along the thickness direction of the limiting plate, the limiting plate forms a plurality of limiting through holes, and the limiting through holes are distributed at intervals along the length direction of the limiting plate;
and limiting pins are arranged at the two ends of the stress plate and correspond to the positions of the limiting through holes, and each limiting pin is correspondingly and movably arranged in one limiting through hole.
Specifically, the atress board passes through the spacer pin to be installed in the one end that spacing through-hole kept away from first curb plate, and after the atress board atress, the spacer pin removes towards first curb plate along spacing through-hole to by stopping in spacing through-hole.
Further, the number of the limiting through holes on each limiting plate is at least 2, and specifically can be 3, 4 or other limiting through holes.
Further, along the thickness direction of the limiting plate, the limiting through holes are in a wave shape or are arranged in a round shape and a strip shape at intervals. The diameter of the round shape is larger than the width of the strip shape, so that the position of the limiting pin is relatively fixed at the position of the wide wave-shaped part or the round part of the limiting through hole.
Further, the limiting pin is made of elastic materials, and can be rubber, and the diameter of the limiting pin is slightly larger than the width of the limiting through hole, so that the limiting pin can stay in the limiting through hole more stably, and the situation that the stress plate shakes in a battery or the stress on two sides is uneven to bias is avoided.
Furthermore, a gap is formed between the stress plate and the bottom plate, so that electrolyte cannot be caused to be stagnated between the limiting device and the shell.
Further, the stress plate is parallel to the first side plate, so that the stress plate is uniformly stressed up and down.
Further, the stress plate is made of plastic materials. When the battery is charged, the pole piece expands, the stress plate naturally applies pressure to the battery cell, and the stress plate cannot deform at the moment; even if deformation occurs, the deformation of the stress plate is not recovered, and the service life of the secondary battery is not influenced.
Further, the stress plate is made of one or more of aluminum, steel, ceramic materials and plastics.
The second aspect of the present utility model provides a battery, including the battery case, wherein the stress plate is pressed against the largest side of the battery cell before the battery is charged for the first time.
Further, the battery cell comprises a pole piece, and when the pole piece expands each time, the stress plate is pressed on the largest side face of the battery cell.
Specifically, the secondary battery still includes electric core, top cap accessory and electrolyte, the electric core is placed in the space that curb plate and bottom plate formed and is filled electrolyte, and the top cap accessory is installed in the one end that the curb plate was kept away from the bottom plate.
Further, the limiting plate does not interfere with the battery core in the whole life cycle of the battery (the limiting plate is obliquely arranged at the folded angle of the shell, and the size is smaller).
Further, the secondary battery can be a device which can be used for electrochemical energy storage, such as a lithium ion battery, a sodium ion battery, a potassium ion battery, an aluminum ion battery and the like; preferably, the system is used for a system containing materials with large electrochemical volume change such as silicon, germanium and the like.
In general, a certain gap is specially designed and reserved when the battery cell is assembled into the shell, so that a space is reserved for volume change during full charge, and deformation of the battery shell due to expansion of the pole piece is avoided. In the utility model, the stress plate is arranged on the shell, the stress plate is directly contacted with the battery core before the battery is charged for the first time, when the battery pole is expanded, the battery core extrudes the stress plate, the stress plate gives the reaction force to the battery core, the battery core is pushed inwards to limit the expansion of the battery pole, and in the process of charging expansion each time, the stress plate props against the battery core to press the battery core to limit the expansion of the battery pole. In addition, the stress plate has no elasticity, can keep the flatness of the plate surface after being stressed, and can uniformly disperse the internal stress caused by the expansion of the pole piece, thereby ensuring the uniform stress of the pole piece.
Meanwhile, a gap is formed between the stress plate and the battery shell (the first side plate of the battery shell), when the pole piece expands, the stress plate can be pressed towards the gap, and the gap provides an expansion space for the battery cell. In addition, the limiting pin of the stress plate can move in the limiting through hole of the limiting plate, so that a moving space is reserved for deformation of the stress plate due to extrusion of the battery cell, and the stress plate can be prevented from falling off from the limiting through hole due to too large deformation.
A third aspect of the utility model provides a powered device comprising a battery as described above.
Compared with the prior art, the technical scheme of the utility model has the following advantages: the structure is simple, and the cost is low; the secondary battery using the battery shell has the advantages that the surface of the negative electrode plate is smooth after charging, obvious wrinkling defects are avoided, and the expansion of the shell is avoided.
Drawings
Fig. 1 is a schematic structure view of a secondary battery according to the present utility model.
Fig. 2 is a schematic view of a part of the structure of the limiting device of the present utility model.
Fig. 3 is a schematic structural view of the limiting plate of the present utility model.
Fig. 4 and 5 are schematic structural views of the limiting through hole of the present utility model.
FIG. 6 is a schematic structural view of a force plate according to the present utility model.
Fig. 7 is an interface of the negative electrode tab of example 1.
Fig. 8 is an interface of the negative electrode tab of example 2.
Fig. 9 is a comparative negative pole piece interface.
Reference numerals illustrate: 1-battery cell, 2-limiting plate, 3-atress board, 4-casing, 4.1-first curb plate, 4.2-second curb plate, 5-spacing through-hole, 6-locating pin.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
As shown in fig. 1 and 2, the battery shell of the utility model is provided with a limiting device on the shell 4, which is used for providing acting force for the battery cell so as to limit the expansion of the pole piece. The housing 4 comprises side plates and a bottom plate (not shown), the side plates comprise a first side plate 4.1 opposite to the largest side of the battery cell and a second side plate 4.2 connected with the first side plate 4.1; the two limiting devices are respectively arranged on the inner sides of the two first side plates 4.1 and comprise a stress plate 3 and a limiting plate 2, and the limiting plate 2 is welded or bonded between the first side plates 4.1 and the second side plates 4.2 with the shell 4 to form a triangular support stable structure.
The secondary battery employing the battery case further includes a battery cell 1, a top cap fitting (not shown), and an electrolyte. The battery cell 1 is specially designed to leave a certain gap when being assembled into the shell, so that a space is reserved for volume change during full charge, and the deformation of the shell due to expansion of the pole piece is avoided. The stress plate 3 is parallel to the first side plate 4.1, is arranged between the battery cell 1 and the first side plate 4.1, and is attached to the battery cell 1. When the pole piece expands, the electric core 1 extrudes the stress plate 3, the stress plate 3 gives the reactive force to the electric core 1, the electric core 1 is pushed inwards to limit the expansion of the pole piece, and in the whole charging process, the stress plate 3 props against the electric core 1 to press the electric core 1 to limit the expansion of the pole piece. Meanwhile, a gap is formed between the stress plate 3 and the first side plate 4.1, when the pole piece expands, the stress plate 3 can be pressed towards the gap, and the gap provides an expansion space for the battery cell 1.
As shown in fig. 3 to 5, a plurality of limit through holes 5 (3 are shown) are distributed along the length direction of the limit plate 2, and the limit through holes 5 are formed along the width direction of the limit plate 2, and are in a wave shape (fig. 4) or are in a round shape and a bar shape (fig. 5) which are arranged at intervals. As shown in fig. 6, a limiting pin 6 is arranged on the stress plate 3 corresponding to the limiting through hole 5, the limiting pin 6 is made of rubber, the diameter of the limiting pin is slightly larger than the width of the limiting through hole 5, and the stress plate 3 is movably installed in the limiting through hole 5 of the limiting plate 2 through the limiting pin 6. The limiting pin 6 of the stress plate 3 can move in the limiting through hole 5 of the limiting plate 2, so that a movable space is reserved for deformation of the stress plate 3 due to extrusion of the power receiving core 1, and the stress plate 3 can be prevented from falling off from the limiting through hole 5 due to too large deformation.
Specifically, when the elastic limiting pin is arranged in the wavy limiting through hole, each time the pole piece expands, the battery cell pushes the elastic limiting pin to squeeze from the front inflection point to the rear inflection point of the wavy limiting through hole (the front part is far from the first side plate and the rear part is far from the first side plate); when the elastic limiting pins are arranged in the round and strip-shaped limiting through holes which are arranged at intervals, each time the pole piece expands, the battery cell pushes the elastic limiting pins to be extruded from the former round to the latter round; therefore, the stress plate can be kept relatively fixed without sliding back and forth after each pole piece is contracted.
In addition, the expansion of the pole piece can be continuously increased along with the cycle times, so that the stress plate continuously moves in one-time expansion of the pole piece to reduce the expansion space, the stress plate can always act, the internal stress is uniformly dispersed when the pole piece expands, and the pole piece is ensured not to be wrinkled.
Example 1
A square lithium ion battery is provided with an electric core, a shell containing a limiting device and electrolyte. The preparation of the battery is completed according to the operations of preparation of positive and negative pole pieces, manufacturing of the battery core, assembly into a shell, packaging, tightness detection, liquid injection, formation, liquid supplementing and capacity division, and the nominal capacity of the battery at room temperature is 100Ah. Wherein, the limiting device limiting plate is made of metal aluminum, the stress plate is made of steel, and the thickness is 0.5mm. The active material of the negative electrode plate is a silicon-based negative electrode with the gram capacity of 650mAh/g, and the thickness expansion of the negative electrode plate can reach 60%.
After capacity division, the battery is disassembled after full charge, the interface condition of the negative pole piece is observed, the picture is taken, the thickness of the pole piece is tested by using a ten-thousandth ruler, and the thickness extreme value (maximum value-minimum value) is recorded.
Example 2
Based on example 1, the active material of the negative electrode active material negative electrode sheet in the battery was a silicon-based negative electrode having a gram capacity of 450mAh/g, and the thickness expansion of the sheet was about 30%. The nominal capacity of the battery at room temperature was 87Ah.
After capacity division, the battery is disassembled after full charge, the interface condition of the negative pole piece is observed, the picture is taken, the thickness of the pole piece is tested by using a ten-thousandth ruler, and the thickness extreme value (maximum value-minimum value) is recorded.
Comparative example
The same test was performed with the same other as the example 1 except that the stopper was removed.
Test records for examples 1-2 and comparative examples are shown in Table 1 and photographs are shown in FIGS. 7-9, respectively.
TABLE 1
The result shows that the scheme of the utility model can effectively control the expansion of the pole piece, and the surface of the negative pole piece is smooth after charging, so that obvious wrinkling is avoided.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. A battery case, comprising
A bottom plate;
the side plate is arranged around the bottom plate and comprises two oppositely arranged first side plates and two oppositely arranged second side plates, and the first side plates are connected with the second side plates; the bottom plate and the side plates together form an accommodating space for accommodating a battery cell, the battery cell is provided with two opposite maximum side surfaces, and each first side plate is opposite to each maximum side surface;
the limiting device is arranged on one side, close to the battery cell, of one first side plate, and comprises a stress plate and two limiting plates;
the stress plate is close to one end of the second side plate, one limiting plate is movably mounted on the stress plate, the stress plate is movable along the thickness direction of the stress plate, and the stress plate and the first side plate form an expansion space with adjustable thickness.
2. The battery housing of claim 1, wherein one end of the limiting plate is fixed to the first side plate and the opposite end is fixed to the second side plate.
3. The battery case according to claim 1 or 2, characterized in that
The limiting plate is provided with a plurality of limiting through holes along the thickness direction of the limiting plate, and the limiting through holes are distributed at intervals along the length direction of the limiting plate;
and limiting pins are arranged at the two ends of the stress plate and correspond to the positions of the limiting through holes, and each limiting pin is correspondingly and movably arranged in one limiting through hole.
4. The battery case as set forth in claim 3, wherein the limit through holes are wavy, or are provided in a circular shape and a bar shape at intervals in the thickness direction of the limit plate.
5. The battery housing of claim 3, wherein the stop pin is a resilient material.
6. The battery housing of claim 1, wherein the force plate and the base plate have a gap therebetween.
7. The battery housing of claim 1, wherein the force plate is a plastic material.
8. A battery comprising a battery housing according to any one of claims 1-7, wherein the force plate is pressed against the largest side of the cell before the battery is first charged.
9. The battery of claim 8, wherein the cell comprises a pole piece, the force plate being pressed against a largest side of the cell upon each expansion of the pole piece.
10. A powered device comprising a battery as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320496400.0U CN219476821U (en) | 2023-03-15 | 2023-03-15 | Battery shell, battery and electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320496400.0U CN219476821U (en) | 2023-03-15 | 2023-03-15 | Battery shell, battery and electric equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219476821U true CN219476821U (en) | 2023-08-04 |
Family
ID=87465838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320496400.0U Active CN219476821U (en) | 2023-03-15 | 2023-03-15 | Battery shell, battery and electric equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219476821U (en) |
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2023
- 2023-03-15 CN CN202320496400.0U patent/CN219476821U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 68, Xin'anjiang Road, Southeast Street, Changshu City, Suzhou City, Jiangsu Province, 215000 Patentee after: Jiangsu Zhengli New Energy Battery Technology Co.,Ltd. Country or region after: China Address before: No. 68, Xin'anjiang Road, Southeast Street, Changshu City, Suzhou City, Jiangsu Province, 215000 Patentee before: Jiangsu Zenergy Battery Technologies Co.,ltd Country or region before: China |