CN207381449U - Battery case and battery pack - Google Patents
Battery case and battery pack Download PDFInfo
- Publication number
- CN207381449U CN207381449U CN201721428590.3U CN201721428590U CN207381449U CN 207381449 U CN207381449 U CN 207381449U CN 201721428590 U CN201721428590 U CN 201721428590U CN 207381449 U CN207381449 U CN 207381449U
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- CN
- China
- Prior art keywords
- battery case
- thickness
- battery
- lower box
- strengthening segment
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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
Abstract
This application involves energy storage device technical field more particularly to a kind of Battery case and a kind of battery packs.The Battery case includes lower box, and the lower box is used to support the single battery；Upper box, the making material of the upper box is different from the making material of the lower box, the upper box includes top, side and connecting portion, the top is connected by the side with the connecting portion, the maximum gauge of the connecting portion is more than the thickness of the side, and the direction where the thickness is first direction；The connecting portion of connector, the lower box and the upper box is connected by the connector.Battery case provided herein is conducive to battery pack and develops to lightweight.
Description
Technical field
This application involves energy storage device technical field more particularly to a kind of Battery cases, further relate to a kind of battery pack.
Background technology
With the rapid development of rechargeable battery, energy density has become the important indicator for weighing battery performance, and promotes
It is then a kind of common method for improving energy density that battery pack develops to lightweight.Common, battery pack is by Battery case and more
A single battery composition, at present, Battery case is made of metal material more, this is unfavorable for battery pack and develops to lightweight.
Utility model content
This application provides a kind of Battery case and a kind of battery pack, which is conducive to battery pack and is sent out to lightweight
Exhibition.
The first aspect of the application provides a kind of Battery case, and including lower box, the lower box is used to support described
Single battery；
Upper box, the making material of the upper box is different from the making material of the lower box, and the upper box includes
Top, side and connecting portion, the top are connected by the side with the connecting portion, and the maximum gauge of the connecting portion is big
Maximum gauge in the side, the direction where the thickness are first direction；
The connecting portion of connector, the lower box and the upper box is connected by the connector.
Preferably, the connecting portion include changeover portion and strengthening segment, the strengthening segment have the first connecting hole, described first
For connecting hole along the first direction through the strengthening segment, the connector passes through first connecting hole；
The strengthening segment is connected by the changeover portion with the side, and the thickness of the strengthening segment is more than the changeover portion
Thickness, the thickness of the changeover portion is equal with the thickness of the side.
Preferably, Battery case provided herein is further included by pressing sleeve,
It is described be pressurized set is embedded in first connecting hole, and it is described be pressurized set have the second connecting hole, described second
Connecting hole runs through described by pressing sleeve along the first direction, and the connector passes through second connecting hole, to connect on described
Babinet and the lower box.
Preferably, the thickness by pressing sleeve is equal to the thickness of the strengthening segment.
Preferably, Battery case provided herein further includes locating piece, and the locating piece is connected to described by pressing sleeve
The upper one side away from the lower box, the locating piece and the strengthening segment location fit in said first direction.
Preferably, described by pressing sleeve and the locating piece is ring-shaped structure.
Preferably, it is described that one side of the pressing sleeve away from the locating piece is provided with guide section, perpendicular to the first party
To direction on, the guide section is to contract.
Preferably, one side of the strengthening segment away from the changeover portion is provided with decompression section, the decompression section with it is described under
Babinet is bonded.
Preferably, the thickness at the top is gradually reduced from the center at the surrounding direction top at the top.
The second aspect of the application provides a kind of battery pack, which is included described in single battery and any of the above-described
Battery case, the single battery is accommodated in the Battery case.
The technical solution that the application provides can reach following advantageous effect：
In Battery case provided herein, lower box is used to support single battery, and upper box is used with lower box not
Same material is made, and to reduce the weight of entire Battery case, this is conducive to battery pack and develops to lightweight.
It should be appreciated that above general description and following detailed description is only exemplary, this can not be limited
Application.
Description of the drawings
The structure diagram for the Battery case that Fig. 1 is provided by the embodiment of the present application；
By pressing sleeve and the structure diagram of locating piece in the Battery case that Fig. 2 is provided by the embodiment of the present application；
Fig. 3 is the sectional view of part-structure in Fig. 1.
Reference numeral：
At the top of 1-；
2- sides；
3- connecting portions；
31- changeover portions；
32- strengthening segments；
The first connecting holes of 321-；
33- depressurizes section；
4- is by pressing sleeve；
The second connecting holes of 41-；
42- guide sections；
5- locating pieces.
Attached drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the application
Example, and for explaining the principle of the application together with specification.
Specific embodiment
The application is described in further detail below by specific embodiment and with reference to attached drawing.
As shown in Figure 1, the embodiment of the present application provides a kind of Battery case, which can accommodate single battery,
The Battery case can include lower box, upper box and connector, and lower box can support single battery；Upper box can include
Top 1, side 2 and connecting portion 3, top 1 can be connected by side 2 with connecting portion 3, and the maximum that can set connecting portion 3 is thick
Degree is more than the thickness of side 2, and the making material of upper box is different from the making material of lower box, and those skilled in the art can root
According to actual conditions, determine the making material of upper box, to reach the weight for reducing entire Battery case, make battery pack to lightweight
Development；The connecting portion 3 of upper box can be connected together with lower box by connector, the encapsulation work of complete battery pair.
It should be noted that lower box and connector are not shown in figures, those skilled in the art can be reasonable according to actual demand
Selection, in addition, the direction where the thickness being previously mentioned in context is first direction, first direction can be shown in Fig. 3
The negative direction of direction A or direction A.
Wherein, lower box can be made of metal material, such as metallic copper or aluminium, certain lower box or alloy material
It is made, single battery can be supported on lower box.Since upper box is with little need for support force is provided, also almost it is not subject to press
Power, thus upper box can be made of the relatively low light plastic of intensity or synthetic material, by selecting suitable upper box
Making material can mitigate the total weight of entire Battery case, if upper box can be the conjunction of PP (polypropylene) and glass material
Into material, glass fibre can improve the structural strength of entire upper box, to avoid upper box due to self structure intensity is insufficient
There is situation about collapsing, optionally, upper box is also provided with cavity structure, which can accommodate single battery
A part, this can improve the capacity of battery pack.Connector can be threaded connector or riveting parts etc., can be with by connector
The connecting portion 3 of upper box with lower box is connected together, similar 3 institute of connecting portion can also be correspondingly arranged on certain lower box
The structure for the function having, in order to the connection of upper box and lower box.
Above-mentioned to understand, in Battery case provided herein, upper box is by using the material system different from lower box
Into to achieve the purpose that reduce entire Battery case weight, this is conducive to battery pack and develops to lightweight.
Further, as shown in figure 3, connecting portion 3 includes changeover portion 31 and strengthening segment 32, strengthening segment 32 can be provided with the
One connecting hole 321, connector can be to pass through the first connecting hole 321 of strengthening segment 32 be run through along the first direction, and strengthening segment 32 can be with
It is connected by changeover portion 31 with side 2, and the thickness of strengthening segment 32 can be more than the thickness of changeover portion 31, the thickness of changeover portion 31
It can be equal with the thickness of side 2.
Specifically, the top box for including top 1, side 2 and connecting portion 3 can be directly formed by way of integrated injection molding
Body, and set the thickness of each several part on connecting portion 3 different, the strengthening segment 32 of thickness bigger by the smaller changeover portion 31 of thickness with
Side 2 connects, and by setting the thickness bigger of strengthening segment 32, the non-deformability and structural strength that can make strengthening segment 32 obtain
To be promoted, this can prevent the structural intergrity that upper box is destroyed due to the coupling mechanism force of connector is larger；By 31 institute of changeover portion
The pressure born is smaller, thus sets changeover portion 31 equal with the thickness of side 2, can further reduce the weight of entire upper box
Amount；First connecting hole 321 can be formed directly into strengthening segment 32 in the manufacturing process of upper box, can also be in the top box bodily form
It is formed into and then by boring the modes such as processing, the first connecting hole 321 can be cylindrical bore, and those skilled in the art can be with
The pore size of first connecting hole 321 determines according to actual conditions, to be adapted with connector.
In order to further improve the service life of upper box, it is preferred that Battery case provided herein can also wrap
It includes by pressing sleeve 4, can be embedded in the first connecting hole 321 by pressing sleeve 4, and passed through along the first direction by that can be provided on pressing sleeve 4
The second connecting hole 41 of itself is worn, connector to pass through the second connecting hole 41, can realize the purpose of connection upper box and lower box.
Specifically, can be sleeve-like configuration by pressing sleeve 4, and can be made by pressing sleeve 4 of the relatively large material of intensity,
It can be such as made by pressing sleeve 4 of simple metal material or alloy material by way of die casting, those skilled in the art can basis
Actual conditions determine the mounting means by pressing sleeve 4, such as can upper box be directly being formed outside by pressing sleeve 4, i.e., first make and be pressurized
Upper box is made after set 4 so that after top box is body formed, can be directly embedded at by pressing sleeve 4 in upper box；It can also be upper
Babinet is formed and then will be placed in by pressing sleeve 4 in first connecting hole 321.By setting by pressing sleeve 4, connector can be made direct
Apply coupling mechanism force along the first direction to by pressing sleeve 4, this can be destroyed when by larger coupling mechanism force to avoid upper box, in raising
The service life of babinet, and then improve the product quality of entire battery pack.
More specifically, the thickness of strengthening segment 32 can be equal to by the thickness of pressing sleeve 4, so set, connector can be made straight
It connects and is contacted with the side surface by pressing sleeve 4, then directly contacted by another side surface of pressing sleeve 4 with lower box, so as to ensure top box
Strengthening segment 32 in body is almost not subject to coupling mechanism force along the first direction, strengthening segment 32 and upper box further to be prevented to be subject to
Damage.
Further, as shown in Fig. 2, Battery case provided herein can also include locating piece 5, locating piece 5 can
With with being connected by one side of the pressing sleeve 4 away from lower box, in a first direction, locating piece 5 can be with 32 location fit of strengthening segment.
Specifically, locating piece 5 can with being integrally formed by pressing sleeve 4, if the two can be that same metal material is made, and
The mode that die casting may be employed directly forms the locating piece 5 that links into an integrated entity and by pressing sleeve 4；Certainly, locating piece 5 with by pressing sleeve 4
Or the structural member of two on-fixed connections, it, can be by the one of locating piece 5 if locating piece 5 can be band hat shape sleeve member
For partial insertion to by pressing sleeve 4, another part of locating piece 5 can be with being determined in a first direction by pressing sleeve 4 and strengthening segment 32
Position cooperation；Correspondingly, hole can also be provided through on locating piece 5, in order to which connector connects through locating piece 5 and lower box
Connect, locating piece 5 can extend outwardly along the direction perpendicular to first direction, in a first direction, it is ensured that locating piece 5 with
32 location fit of strengthening segment, and then can ensure strengthening segment 32 and be not in the situation of disengaging between by pressing sleeve 4, this is conducive to
Ensure the connection reliability of entire Battery case.
A kind of specific preferred embodiment is, can is ring-shaped structure by pressing sleeve 4 and locating piece 5, this is convenient for connection
The installation of part and connector and locating piece 5 location fit in a first direction.
Further, guide section 42 can be provided with by the one side of 4 remotely located part 5 of pressing sleeve, perpendicular to first direction
Direction on, guide section 42 can be to contract.
Specifically, the mode that can first pass through integrated injection molding forms upper box, and added after upper box formation by boring
The mode of work forms the first connecting hole 321, and will can be inserted into along the first direction by pressing sleeve 4 in the first connecting hole 321, is oriented to
Section 42 can directly be formed in the manufacturing process by pressing sleeve 4, can also pass through the modes shapes such as grinding during following process
Into；Obvious, it by setting guide section 42, will be inserted into convenient for staff by pressing sleeve 4 in the first connecting hole 321, to improve
Production efficiency.
In order to which upper box is further made to still ensure that self structure in the case where connector may be subject to apply coupling mechanism force
Integrality, it is preferred that one side of the strengthening segment 32 away from changeover portion 31 is also provided with decompression section 33, depressurizes section 33 and nowel
The surface fitting of body.Obvious, due to adding the contact area of upper box and lower box so that connector is applied to strengthening segment
Power on 32 can be undertaken by more structures, this may further ensure that upper box, especially connecting portion 3 are not easy to be broken
It is bad.
Specifically, decompression section 33 can also be integrally formed with strengthening segment 32 and changeover portion 31, and depressurize the thickness of section 33
The thickness of strengthening segment 32 can be less than, in the case of not losing itself function in decompression section 33, reduce entire upper box as far as possible
Weight.
In order to further ensure the top 1 of upper box will not be influenced by self gravitation and there is situation about collapsing, Yi Zhongke
The specific embodiment of choosing is to be directed toward the center at top 1 from the surrounding at top 1, can be gradually reduced the thickness at top 1, it is clear that
, this can reduce the weight of intermediate region on top 1, the probability collapsed occur to reduce top 1.
Based on the Battery case that any of the above-described embodiment is provided, the application also provides a kind of battery pack, which can
With the Battery case for including single battery and any of the above-described embodiment is provided, the quantity of single battery can be multiple, battery
Upper box in babinet can form accommodation space with lower box, and multiple single batteries can be supported in the nowel of Battery case
On body, and it is accommodated in foregoing accommodation space.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of Battery case, for accommodating single battery, which is characterized in that including：
Lower box, the lower box are used to support the single battery；
Upper box, the making material of the upper box is different from the making material of the lower box, the upper box include top,
Side and connecting portion, the top are connected by the side with the connecting portion, and the maximum gauge of the connecting portion is more than institute
The maximum gauge of side is stated, the direction where the thickness is first direction；
The connecting portion of connector, the lower box and the upper box is connected by the connector.
2. Battery case according to claim 1, which is characterized in that the connecting portion includes changeover portion and strengthening segment, institute
Strengthening segment is stated with the first connecting hole, first connecting hole is along the first direction through the strengthening segment, the connector
Through first connecting hole；
The strengthening segment is connected by the changeover portion with the side, and the thickness of the strengthening segment is more than the thickness of the changeover portion
Degree, the thickness of the changeover portion are equal with the thickness of the side.
3. Battery case according to claim 2, which is characterized in that it further includes by pressing sleeve,
The set that is pressurized is embedded in first connecting hole, and the set that is pressurized has the second connecting hole, second connection
Hole runs through described by pressing sleeve along the first direction, and the connector passes through second connecting hole, to connect the upper box
With the lower box.
4. Battery case according to claim 3, which is characterized in that the thickness by pressing sleeve is equal to the strengthening segment
Thickness.
5. Battery case according to claim 3, which is characterized in that further include locating piece, the locating piece is connected to institute
It states to be pressurized and puts on the one side away from the lower box, the locating piece positions in said first direction with the strengthening segment matches somebody with somebody
It closes.
6. Battery case according to claim 5, which is characterized in that described by pressing sleeve and the locating piece is annular shape
Structure.
7. Battery case according to claim 5, which is characterized in that described to be set by one side of the pressing sleeve away from the locating piece
Guide section is equipped with, on the direction of the first direction, the guide section is to contract.
8. Battery case according to claim 2, which is characterized in that one side of the strengthening segment away from the changeover portion is set
Decompression section is equipped with, the decompression section is bonded with the lower box.
9. Battery case according to claim 1, which is characterized in that the surrounding at the thickness at the top from the top refers to
It is gradually reduced to the center at the top.
10. a kind of battery pack, which is characterized in that including single battery and battery case as claimed in any one of claims 1-9 wherein
Body, the single battery are accommodated in the Battery case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721428590.3U CN207381449U (en) | 2017-10-31 | 2017-10-31 | Battery case and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721428590.3U CN207381449U (en) | 2017-10-31 | 2017-10-31 | Battery case and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207381449U true CN207381449U (en) | 2018-05-18 |
Family
ID=62333718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721428590.3U Active CN207381449U (en) | 2017-10-31 | 2017-10-31 | Battery case and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207381449U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020238444A1 (en) * | 2019-05-29 | 2020-12-03 | 宁德时代新能源科技股份有限公司 | Battery box body, battery pack, and vehicle |
| US11183729B2 (en) | 2019-01-09 | 2021-11-23 | Byd Company Limited | Battery pack, vehicle and energy storage device |
| WO2023045461A1 (en) * | 2021-09-27 | 2023-03-30 | 宁德时代新能源科技股份有限公司 | Sleeve for battery case, battery and electric device |
-
2017
- 2017-10-31 CN CN201721428590.3U patent/CN207381449U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11183729B2 (en) | 2019-01-09 | 2021-11-23 | Byd Company Limited | Battery pack, vehicle and energy storage device |
| US11955651B2 (en) | 2019-01-09 | 2024-04-09 | Byd Company Limited | Power battery pack and electric vehicle |
| WO2020238444A1 (en) * | 2019-05-29 | 2020-12-03 | 宁德时代新能源科技股份有限公司 | Battery box body, battery pack, and vehicle |
| WO2023045461A1 (en) * | 2021-09-27 | 2023-03-30 | 宁德时代新能源科技股份有限公司 | Sleeve for battery case, battery and electric device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |