CN208570745U - Battery case and battery pack - Google Patents
Battery case and battery pack Download PDFInfo
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- CN208570745U CN208570745U CN201821421625.5U CN201821421625U CN208570745U CN 208570745 U CN208570745 U CN 208570745U CN 201821421625 U CN201821421625 U CN 201821421625U CN 208570745 U CN208570745 U CN 208570745U
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- Prior art keywords
- protrusion
- resistance
- upper cover
- battery case
- battery
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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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Abstract
This application involves battery technology field more particularly to a kind of Battery case and battery packs, wherein Battery case includes lower box；Upper cover, the upper cover the cover on the lower box, the inner surface of the upper cover have it is resistance to rush region, it is described resistance to rush on region the resistance to punching protrusion for being provided with and being fused for alleviating the upper cover.In the technical solution, it the resistance to protrusion that rushes is set can carry out dispersion consumption by resistance to rush on region in upper cover to the high-temperature particle and high-temperature gas generated in Battery case, to reduce the temperature and impact force that are applied to upper cover, to can be relieved the case where upper cover is fused, the safety in utilization of battery pack is improved.
Description
Technical field
This application involves battery technology field more particularly to a kind of Battery case and battery packs.
Background technique
Currently, since the requirement to electric car course continuation mileage is higher and higher, volume is bigger, the higher monomer of energy density
Battery is applied in Battery case, wherein the charge and discharge of single battery mainly pass through BMS (BATTERY MANAGEMENT
SYSTEM, battery management system) control, it is easy to happen if BMS breaks down or single battery is collided extruding interior
Short circuit accident, so that single battery is easy to happen serious thermal runaway phenomenon；When thermal runaway occurs for single battery, single battery
Interior to generate high-temperature particle and high-temperature gas, this high-temperature particle and high-temperature gas can be sprayed and be made by the explosion-proof valve of single battery
The position corresponding with explosion-proof valve on Battery case, but since position corresponding with explosion-proof valve on Battery case is usually
Slab construction, weaker, the high-temperature particle and high-temperature gas burn through easily sprayed from explosion-proof valve leads to high-temperature particle and height
Wet body can be from diffusing in passenger cabin or atmosphere, to be easy to jeopardize the health of personnel and easy pair in Battery case
Other equipment damage, and reduce the safety in utilization of battery pack.
Utility model content
This application provides a kind of Battery case and battery packs, can be improved the safety in utilization of battery pack.
The application first aspect provides a kind of Battery case comprising:
Lower box；
Upper cover, for the upper cover the cover on the lower box, the inner surface of the upper cover rushes region, the resistance to punching with resistance to
The resistance to punching protrusion being fused for alleviating the upper cover is provided on region.
Optionally,
The resistance to region that rushes is oppositely arranged with the pressure relief element positioned at the intracorporal battery unit of the nowel,
In the projection obtained on the resistance to thickness direction for rushing protrusion, let out described in the resistance to perspective plane covering for rushing region
Press the perspective plane of element.
Optionally,
The ratio on the resistance to perspective plane for rushing region and the perspective plane of the pressure relief element is 5:1~10:1.
Optionally,
The resistance to protrusion that rushes includes multiple protrusions, from the outer surface of the upper cover to the direction of the inner surface of the upper cover
On, the width of the longitudinal section of the protrusion constantly reduces.
Optionally,
Each protrusion is sequentially connected to form ripple struction.
Optionally,
Each bulge clearance is arranged in resistance to rush on region.
Optionally,
Each protrusion in a first direction and equally spaced arrangement in second direction, and adjacent institute in said first direction
State the interval that the interval between protrusion is equal between the adjacent protrusion in this second direction；
Wherein, the first direction is mutually perpendicular to the second direction.
Optionally,
Interval between the adjacent protrusion is less than the thickness of the protrusion.
Optionally,
The thickness of the protrusion is greater than the thickness of the upper cover.
The application second aspect provides a kind of battery pack comprising Battery case described in any of the above embodiments.
Technical solution provided by the present application can achieve it is following the utility model has the advantages that
Battery case provided herein, by upper cover it is resistance to rush on region the resistance to protrusion that rushes is set can be to Battery case
The high-temperature particle and high-temperature gas of interior generation carry out dispersion consumption, are applied to reducing the temperature for being applied to upper cover and reduction
The impact force of lid extends the service life of Battery case, improves Battery case to can be relieved the case where upper cover is fused
Safety in utilization.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Application.
Detailed description of the invention
Fig. 1 is the perspective view of the explosion of battery pack described in the embodiment of the present application；
Fig. 2 is the schematic diagram of battery unit in battery pack described in the embodiment of the present application；
Fig. 3 to Fig. 7 is in Battery case described in the application difference embodiment, and upper cover and the resistance to assembly for rushing protrusion are illustrated
Figure；
Fig. 8 is the resistance to schematic diagram for rushing protrusion protrusions shown in Fig. 3.
Appended drawing reference:
10- lower box；
11- upper cover；
12- is resistance to rush protrusion；
120- triangular hill；
121- semi-cylindrical hill；
The trapezoidal protrusion of 122-；
123- hemispherical projections；
124- taper type protrusion；
13- battery unit；
130- pressure relief element.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
In the description of the present application unless specifically defined or limited otherwise, term " first ", " second " are only used for describing
Purpose, be not understood to indicate or imply relative importance；Unless otherwise prescribed or explanation, term " multiple " refer to two
Or it is more than two；Term " connection ", " fixation " etc. shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection
It is to be detachably connected, or be integrally connected, or be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.
For the ordinary skill in the art, can understand as the case may be above-mentioned term in the present invention specifically contain
Justice.
In the description of this specification, it is to be understood that "upper", "lower" described in the embodiment of the present application, "left", "right"
The equal nouns of locality are described with angle shown in the drawings, should not be construed as the restriction to the embodiment of the present application.In addition,
In context, it is also necessary to which understanding can not only when mentioning an element and being connected to another element "upper" or "lower"
It is enough connected directly between another element "upper" or "lower", another element "upper" can also be indirectly coupled to by intermediary element
Or "lower".
As shown in Figures 1 to 8, the battery pack battery pack of the present embodiment, can be applied in electric car, this battery pack battery
Packet may include Battery case and battery unit 13, and the battery unit 13 is mountable in the battery accommodating chamber of Battery case, and electricity
Pool unit 13 can have pressure relief element 130 (such as explosion-proof valve), when thermal runaway occurs for battery unit 13, generate in battery unit 13
High-temperature particle and high-temperature gas can be sprayed by this pressure relief element 130.
In order to prevent from the high-temperature particle and high-temperature gas burn through Battery case of the ejection of pressure relief element 130, the present embodiment
The battery pack Battery case is improved, specific as follows:
Battery case may include lower box 10 and upper cover 11, this 11 the cover of upper cover on lower box 10, and with lower box 10
Battery accommodating chamber is surrounded, battery unit 13 can be contained in this battery accommodating chamber.Wherein, the inner surface of upper cover 11 has the area Nai Chong
Domain, and it is resistance to rush on region to be provided with resistance to rush protrusion 12 for alleviate that upper cover 11 is fused.It should be noted that this resistance to rushes protrusion
12 protrusions be set to it is resistance to rush region, and almost arrangement is full entire resistance to rushes region, that is to say, that the resistance to boundary for rushing protrusion 12 almost with
The resistance to overlapping margins for rushing region.
In the present embodiment, by upper cover 11 it is resistance to rush region be arranged it is resistance to rush protrusion 12, on the one hand can reinforce Battery case
Thickness on the other hand can be to the high-temperature particle and High Temperature Gas generated in Battery case to reinforce the structural strength of Battery case
Body (such as: the gas that the pressure relief element 130 of battery unit 13 sprays) dispersion consumption is carried out, it is applied in upper cover 11 with reducing
The impact force that temperature and reduction are applied to upper cover 11 extends Battery case to can be relieved the case where upper cover 11 is fused
Service life improves the safety in utilization of battery pack.
It should be noted that aluminium, aluminium alloy, no can be used in the upper cover 11 of Battery case, lower box 10 and the resistance to protrusion 12 that rushes
Rust steel, carbon fiber or other composite materials are made, to improve the heat resistance and impact resistance of Battery case.
In addition, upper cover 11 can be integrally formed with the resistance to protrusion 12 that rushes, split settings and can also be formed by connecting by other means.
For example, when Battery case is provided with the battery unit 13 with pressure relief element 130, pressure release is first in order to prevent
The high-temperature particle and high-temperature gas burn through upper cover 11 that part 130 sprays in the present embodiment, can make resistance to rush region and be located at lower box 10
The pressure relief element 130 of interior battery unit 13 is oppositely arranged, that is to say, that can make it is resistance to rush on region resistance to rush protrusion 12 and pressure release
Element 130 is oppositely arranged, by the resistance to resistance to protrusion 12 that rushes rushed on region to the high-temperature particle and high temperature sprayed from pressure relief element 130
Gas carries out dispersion consumption, is broken through and/or high-temperature solid particle burn through to alleviate upper cover 11 by high-temperature gas.
Wherein, in the projection obtained on the resistance to thickness direction for rushing protrusion 12, the resistance to perspective plane covering pressure release for rushing region
It the perspective plane of element 130 can due to being previously mentioned the resistance to boundary for rushing protrusion 12 almost with the resistance to overlapping margins for rushing region
Know, at the perspective plane of the resistance to perspective plane covering pressure relief element 130 for rushing region, the resistance to perspective plane for rushing protrusion 12 also covers pressure release member
The perspective plane of part 130.In the present embodiment, by increasing the resistance to area for rushing region in upper cover 11, resistance to protrusion 12 is rushed so as to increase
Area, with it is more efficient to pressure relief element 130 spray high-temperature particle and high-temperature gas carry out dispersion consumption, thus alleviate on
Lid 11 is broken through and/or high-temperature solid particle burn through by high-temperature gas, improves the safety in utilization of battery pack.
Specifically, in order to improve the energy density of battery pack, battery pack is compacter in spatial design, in general, electricity
Face on pool unit 13 with pressure relief element 130 is smaller at a distance from upper cover 11, about between 5mm~40mm, due to distance
It is smaller, after high-temperature particle and high-temperature gas break through pressure relief element 130 and be applied in upper cover 11, it can expand to periphery larger range
It dissipates, therefore, in order to alleviate the high-temperature particle spread to periphery and high-temperature gas burn through upper cover 11, optionally, the resistance to throwing for rushing region
The ratio on shadow face and the perspective plane of pressure relief element 130 is 5:1~10:1.
It should be noted that the resistance to position for rushing region is not limited only to the position opposite with pressure relief element 130, can also be provided at
It is upper to cover other positions for being easy to be fused.
In one embodiment, the resistance to protrusion that rushes may include multiple protrusions, from the outer surface of the upper cover to the upper cover
On the direction on surface, the width of longitudinal section of this protrusion constantly reduces, for example, vertical sectional shape of this protrusion can for triangle,
It is semicircle, trapezoidal etc..In this way design so that it is each protrusion between can be formed with opening towards the bottom of lower box 10 recess portion, from
The gas that pressure relief element 130 sprays is applied to that this is resistance to when rushing on protrusion, and a part of high-temperature particle and high-temperature gas are applied to protrusion
On be consumed, another part high-temperature particle and high-temperature gas are dispersed and entered in recess portion with different inclination angles by protrusions, due to
The presence at inclination angle, only very small amount of high-temperature particle and high-temperature gas perpendicular acting carry out energy to upper cover 11 and with upper cover 11
Exchange, is not enough to burn through upper cover 11, meanwhile, the face of recess portion is used to form in adjacent protrusion to the air rebound being located in recess portion
The vertical upper cover 11 of Shi Huiyu incident high-temperature particle and high-temperature gas collide, to realize the energy of high-temperature particle and high-temperature gas
Amount (energy can be thermal energy and impact force) dissipates, to reach effectively dispersion and the pressure release to dissipate from thermal runaway battery unit 13
At element 130 spray high-temperature particle and high-temperature gas energy purpose, effectively reduce temperature suffered by upper cover 11 and
Impact force protects upper cover 11 not broken through, and improves the safety in utilization of battery pack.
It should be noted that the longitudinal section mentioned in the present embodiment is the face along the thickness direction cutting of protrusion.
In one alternate embodiment, as shown in Figures 3 to 5, each protrusion is sequentially connected to form ripple struction, is set in this way
Meter can avoid being applied directly in upper cover 11 from the gas that pressure relief element 130 sprays, and alleviate the case where upper cover 11 is fused.
Wherein, which can be in long strip, it may be assumed that and the protrusion is strip protrusion, on the length direction of strip protrusion,
The opposite sides of each strip protrusion extends respectively to the resistance to edge for rushing region, to increase the resistance to active area for rushing protrusion 12,
With the high-temperature particle and high-temperature gas sprayed from the pressure relief element 130 of thermal runaway battery unit 13 that further disperse and dissipate
Energy effectively reduces temperature suffered by upper cover 11 and impact force, and upper cover 11 is protected not broken through, and improves making for battery pack
Use safety.
In addition, ripple struction can for triangle ripple struction (as shown in Figure 3), semicircle ripple struction (as shown in Figure 4),
Trapezoidal ripple struction (as shown in Figure 5) etc., that is to say, that on the resistance to thickness direction for rushing protrusion 12, raised longitudinal section can be
Triangle, semicircle, trapezoidal etc., these protrusions can be defined as triangular hill 120, semi-cylindrical hill 121 and trapezoidal protrusion
122, and the protrusion of these shapes can effectively peptizaiton in high-temperature particle and high-temperature gas in upper cover 11, thus on alleviating
Lid 11 is broken through and/or high-temperature solid particle burn through by high-temperature gas.
Preferably, this ripple struction is triangle ripple struction, that is to say, that on the resistance to thickness direction for rushing protrusion 12,
The longitudinal section of protrusion can be triangle, for the convenience of description, the protrusion that longitudinal section is triangle can be referred to as triangular hill
120, wherein as shown in figure 8, the range of the angle [alpha] at the wedge angle position of this triangular hill 120 can be 60 ° to 120 °, in battery
When the high-temperature particle and high-temperature gas generated after 13 thermal runaway of unit acts on triangular hill 120, which can
This high-temperature particle and high-temperature gas are divided into two, then, high-temperature particle and high-temperature gas change the angle of action, can be with 30 ° to 60 °
Incidence angle act on the side of recess portion, formed and be vortexed in recess portion, with dissipation high-temperature particle and the energy of high-temperature gas, reached
Protect the purpose of the upper cover 11 of Battery case.Protrusion 12 is rushed as resistance to using triangle ripple struction in the present embodiment, can be improved
Protection effect, and difficulty of processing and processing cost can be reduced.
In another alternative embodiment, as shown in Figure 6 and Figure 7, the resistance to protrusion 12 that rushes includes multiple protrusions, each bulge clearance row
Cloth rushes on region resistance to, the region that is formed may be defined as recess portion between each protrusion, and design in this way is being sprayed from pressure relief element 130
When gas is applied on this resistance to punching protrusion, a part of high-temperature particle and high-temperature gas are applied in protrusion and are consumed, another part
High-temperature particle and high-temperature gas are dispersed and entered in recess portion with different inclination angles by protrusions, only non-due to the presence at inclination angle
The high-temperature particle and high-temperature gas perpendicular acting of Chang Shaoliang carries out energy exchange to upper cover 11 and with upper cover 11, is not enough on burn through
Lid 11, meanwhile, the face that recess portion is used to form in adjacent protrusion can be with vertical upper cover 11 when to the air rebound being located in recess portion
Incident high-temperature particle and high-temperature gas collides, to realize that (energy can be heat to the energy of high-temperature particle and high-temperature gas
Energy and impact force) it dissipates, to reach effectively dispersion and the ejection from the pressure relief element 130 of thermal runaway battery unit 13 that dissipates
The purpose of the energy of high-temperature particle and high-temperature gas effectively reduces temperature suffered by upper cover 11 and impact force, protects upper cover
11 are not broken through, and the safety in utilization of battery pack is improved.
For example, protrusion can be in bulk, it may be assumed that the protrusion is block-shaped protrusion, and the width and length of the block-shaped protrusion differ
Seldom.
Specifically, each protrusion is in a first direction and equally spaced arrangement in second direction, and adjacent convex in a first direction
Interval between rising is equal to the interval between the adjacent protrusion in a second direction；Wherein, referring herein to first direction with
Second direction is mutually perpendicular to.That is, each protrusion be arranged in the form of an array it is resistance to rush on region, with guarantee it is each protrusion uniformly point
Dissipate the high-temperature particle and high-temperature gas sprayed from the pressure relief element 130 of thermal runaway battery unit 13.
It should be noted that in the present embodiment, each protrusion can arrange it is completely entire it is resistance to rush region, to increase the resistance to punching of array
The active area of protrusion, with the high temperature sprayed from the pressure relief element 130 of thermal runaway battery unit 13 that further disperses and dissipate
The energy of particle and high-temperature gas effectively reduces temperature suffered by upper cover 11 and impact force, and upper cover 11 is protected not broken through,
Improve the safety in utilization of battery pack.
Wherein, when each bulge clearance is arranged in resistance to rush on region, the interval between adjacent protrusion is less than the thickness of protrusion,
Design improves the resistance to tightness rushed on region between each protrusion in this way, to can be relieved the gas sprayed from pressure relief element 130
It is applied directly in upper cover 11, then alleviates the case where upper cover 11 is fused.
In addition, each protrusion can be hemispherical projections 123 (such as Fig. 6 institute when each bulge clearance is arranged in resistance to rush on region
Show) or taper type protrusion 124 (as shown in Figure 7) etc., that is to say, that the protrusion indulging on the resistance to thickness direction for rushing protrusion 12 is cut
Face is semicircle, trapezoidal etc., the protrusion of these shapes can effective peptizaiton in high-temperature particle and High Temperature Gas in upper cover 11
Body.
Preferably, this protrusion is hemispherical projections 123, it may be assumed that on the resistance to thickness direction for rushing protrusion 12, raised longitudinal section
It is preferably semicircle, to improve the resistance to protection effect for rushing protrusion 12.
Specifically, between adjacent hemispherical projections 123 center away from the diameter that range is 1 times of hemispherical projections 123 to 2 sesquialters
The diameter of hemisphere jut 123, each hemispherical projections 123 are arranged successively, and are covered with and entire resistance to are rushed region；In 13 thermal runaway of battery unit
When the high-temperature particle and high-temperature gas generated afterwards acts on hemispherical projections 123, which can be by this high-temperature particle
And high-temperature gas is dispersed in the recess portion that adjacent hemispherical projections 123 are formed with different angle, and is assembled in recess portion, and stream is formed
Zone of turbulence is moved with the energy of dissipate high-temperature particle and high-temperature gas, while cryogenic gas protective layer can be formed in recess portion, is hindered
Only subsequent high temperature particle and high-temperature gas enter recess portion, to achieve the purpose that the upper cover 11 for protecting Battery case.
Wherein, the thickness for each protrusion that foregoing embodiments are mentioned is greater than or equal to the thickness of upper cover 11, optionally, upper cover
The ratio range of 11 thickness and raised thickness is 1:1 to 1:1.5, to achieve the purpose that the same of effective protection upper cover 11
When, the weight of Battery case can be also reduced, the light-weighted purpose of battery pack is reached.
For example, when the battery unit 13 in battery pack is provided with multiple, the resistance to region that rushes of upper cover 11 be may also set up
Have multiple, it may be assumed that it is resistance to rush protrusion may also set up it is multiple.It should be understood that the resistance to region that rushes can be with the pressure release member of battery unit 13
Part 130 corresponds, can also a resistance to pressure relief element 130 rushed region and correspond to multiple battery units 13.
It is resistance to rush region and be provided with multiple when, it is each it is resistance to rush region space set, to reach effective protection upper cover 11
While purpose, the weight of Battery case can be also reduced, reaches the light-weighted purpose of battery pack.
Since the battery unit 13 in battery pack is usually square, in order to make the resistance to protrusion 12 that rushes sufficiently cover battery unit
The resistance to protrusion 12 that rushes can be arranged to rectangular structure by 13 pressure relief element 130.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of Battery case characterized by comprising
Lower box；
Upper cover, the upper cover the cover on the lower box, the inner surface of the upper cover have it is resistance to rush region, it is described resistance to rush region
On be provided with for alleviating the resistance to punching protrusion that the upper cover is fused.
2. Battery case according to claim 1, which is characterized in that
The resistance to region that rushes is oppositely arranged with the pressure relief element positioned at the intracorporal battery unit of the nowel,
In the projection obtained on the resistance to thickness direction for rushing protrusion, the resistance to perspective plane for rushing region covers the pressure release member
The perspective plane of part.
3. Battery case according to claim 2, which is characterized in that
The ratio on the resistance to perspective plane for rushing region and the perspective plane of the pressure relief element is 5:1~10:1.
4. Battery case according to claim 1, which is characterized in that
The resistance to protrusion that rushes includes multiple protrusions, from the outer surface of the upper cover to the direction of the inner surface of the upper cover on, institute
The width for stating the longitudinal section of protrusion constantly reduces.
5. Battery case according to claim 4, which is characterized in that
Each protrusion is sequentially connected to form ripple struction.
6. Battery case according to claim 4, which is characterized in that
Each bulge clearance is arranged in described resistance to rush on region.
7. Battery case according to claim 6, which is characterized in that
Each protrusion is in a first direction and equally spaced arrangement in second direction, and adjacent described convex in said first direction
Interval between rising is equal to the interval between the adjacent protrusion in this second direction；
Wherein, the first direction is mutually perpendicular to the second direction.
8. Battery case according to claim 6, which is characterized in that
Interval between the adjacent protrusion is less than the thickness of the protrusion.
9. Battery case according to claim 4, which is characterized in that
The thickness of the protrusion is greater than the thickness of the upper cover.
10. a kind of battery pack characterized by comprising Battery case described in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821421625.5U CN208570745U (en) | 2018-08-31 | 2018-08-31 | Battery case and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821421625.5U CN208570745U (en) | 2018-08-31 | 2018-08-31 | Battery case and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208570745U true CN208570745U (en) | 2019-03-01 |
Family
ID=65451451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821421625.5U Active CN208570745U (en) | 2018-08-31 | 2018-08-31 | Battery case and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208570745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023202348A1 (en) * | 2022-04-21 | 2023-10-26 | 宁德时代新能源科技股份有限公司 | Battery and electrical device |
-
2018
- 2018-08-31 CN CN201821421625.5U patent/CN208570745U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023202348A1 (en) * | 2022-04-21 | 2023-10-26 | 宁德时代新能源科技股份有限公司 | Battery and electrical device |
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