CN203941956U - The hermetically-sealed construction of battery case - Google Patents
The hermetically-sealed construction of battery case Download PDFInfo
- Publication number
- CN203941956U CN203941956U CN201420271100.3U CN201420271100U CN203941956U CN 203941956 U CN203941956 U CN 203941956U CN 201420271100 U CN201420271100 U CN 201420271100U CN 203941956 U CN203941956 U CN 203941956U
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- battery case
- upper cover
- hermetically
- sealant layer
- sealed construction
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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
The utility model belongs to battery case technical field, relate in particular to a kind of hermetically-sealed construction of battery case, comprise battery case upper cover, securing member and battery case lower box, described battery case upper cover is fastening by described securing member and described battery case lower box, described hermetically-sealed construction also comprises sealant layer, the lower limb of described battery case upper cover is provided with for the installing zone of described securing member being installed and for applying the coating area of described sealant layer, and described sealant layer is arranged between described coating area and described battery case lower box.Compared to prior art, the utlity model has simple in structure, degree of protection is high, long service life, sealing is reliable, versatility is wide, production efficiency is high, easy accessibility and the various features such as cost is low.
Description
Technical field
The utility model belongs to battery case technical field, relates in particular to a kind of hermetically-sealed construction of battery case.
Background technology
The manufacture craft of battery for electric automobile case comprises: first a plurality of batteries are formed to a battery modules by series connection and/or parallel connection, and then a plurality of battery modules are passed through to series connection and/or a battery case of formation in parallel.Battery case is the power resources of electric automobile, is its core component, and the fail safe of battery case directly has influence on the fail safe of car load.
According to the difference of the type of cooling, battery case comprises water-cooled cells case, natural air cooled battery case and air blast cooling battery case, because the output voltage of battery for electric automobile case is up to more than 200V, and the immersion of water can cause short circuit, therefore first two battery case must strictly seal to prevent the immersion of water, the degree of protection requirement of battery case reach IP67 and more than.As can be seen here, for first two battery case, battery case must be all strict sealing, and all need to balanced valve be set upper covering, to play battery case inside and outside differential pressure and the explosion-proof effect adjusted.And for air blast cooling battery case, except necessary ventilation hole, remainder all can not communicate with atmosphere, the flow velocity of the cooling blast in stuffing box and the flow direction need strict control, can not allow to occur leaking in the somewhere of stuffing box, to avoid the difference of flowability of cooling blast to cause the inconsistent of battery module working temperature, thereby cause the deterioration of consistency of performance.
As can be seen here, the structural design of battery case and sealing thereof are directly connected to the trouble free service situation of its internal cell module.The sealing of traditional battery case by cover thereon and lower box between add sealing gasket and realize, wherein, sealing gasket is to be installed in the groove at lower box edge, this hermetically-sealed construction has the following disadvantages:
The first, the degree of protection that this hermetically-sealed construction can reach generally, below IP54, can not meet the degree of protection requirement that battery case is higher;
The second, for the larger battery case of volume, sealing gasket is to be generally spliced by polylith pad, and seal failure easily appears in the interface between pad and pad;
The 3rd, because this hermetically-sealed construction is realized by locking compression seal pad between upper cover and lower box, sealing gasket easily occurs causing not sealing not or due to the excessive destroyed situation of sealing gasket that causes of compression due to compression;
The 4th, along with the development of battery case technology, the design of battery case is variation also, and this hermetically-sealed construction is generally only applicable to more regular casing, and the situation that is three-dimension curved surface for more complicated even upper cover and lower box Contact face is difficult to realize and seals;
The 5th, sealing gasket is an independently part, in assembling, time need to be installed in the groove at lower box edge, easily occurs installing not in place and causes the situation of seal failure;
The 6th, this hermetically-sealed construction sealing after repeatedly installing and removing is difficult to assurance, and this just gives and has brought after sale very large difficulty.
Utility model content
The purpose of this utility model is: for the deficiencies in the prior art, and a kind of hermetically-sealed construction of battery case is provided, that sealing structure has is simple in structure, degree of protection is high, long service life, sealing is reliable, versatility is wide, production efficiency is high, easy accessibility and the feature such as cost is low.
In order to achieve the above object, the utility model adopts following technical scheme: a kind of hermetically-sealed construction of battery case, comprise battery case upper cover, securing member and battery case lower box, described battery case upper cover is fastening by described securing member and described battery case lower box, the hermetically-sealed construction of described battery case also comprises sealant layer, the lower limb of described battery case upper cover is provided with for the installing zone of described securing member being installed and for applying the coating area of described sealant layer, and described sealant layer is arranged between described coating area and described battery case lower box.During installation, sealant layer can produce compression by the pretightning force of described securing member, and then by the contact interface sealing of described battery case upper cover and described battery case lower box.
A kind of improvement as the hermetically-sealed construction of the utility model battery case, described installing zone comprises platform area and is arranged at the screw on described platform area, described platform area is connected with described coating area by moulding step, and place, described platform area plane is positioned at the below of place, described coating area plane.
As a kind of improvement of the hermetically-sealed construction of the utility model battery case, the thickness of described sealant layer is more than or equal to the height of described moulding step.
As a kind of improvement of the hermetically-sealed construction of the utility model battery case, described installing zone is distributed in the lower limb of described battery case upper cover equably.
As a kind of improvement of the hermetically-sealed construction of the utility model battery case, described battery case upper cover is set to panel beating upper cover or surface treated aluminium sheet upper cover.
As a kind of improvement of the hermetically-sealed construction of the utility model battery case, described sealant layer is set to layer of polyurethane.
As a kind of improvement of the hermetically-sealed construction of the utility model battery case, described securing member is set to fastening bolt or holding screw.
As a kind of improvement of the hermetically-sealed construction of the utility model battery case, the cross sectional shape of described sealant layer before compression is semicircle, and the cross sectional shape after compression is flat.
With respect to prior art, the utility model applies sealant layer by the lower limb at battery case upper cover, then by the pretightning force of securing member, can realize the positiver sealing of battery case, is embodied in:
The first, its degree of protection can reach IP67, can meet the seal request of battery case;
Second, for the larger battery case of volume, only need to all apply sealant layer in the coating area of the lower limb of battery case upper cover, just can realize the sealing completely of battery case, so just can solve well the splicing of available technology adopting polylith sealing gasket and could realize the sealing of the larger battery case of volume and the problem that easily occurs seal failure at the interface of the sealing gasket being connected;
The 3rd, the thickness of sealant layer can be controlled by moulding step, during actual fabrication, the height design of moulding step can calculate according to the decrement of sealant layer, when the height of design moulding step, the decrement of sealant layer is generally got 50% and is calculated, and so just can avoid causing not sealing not or due to the excessive destroyed situation of sealant layer that causes of compression due to compression;
The 4th, the seal request that the Battery case that can meet different structure is set of the utility model sealant layer, no matter whether whether Battery case regular, complicated, also no matter battery case upper cover and the contact-making surface between battery case lower box of this Battery case are plane or three-dimension curved surface, all can realize positiver sealing, thereby make the utility model versatility wide;
The 5th, in the utility model, the thickness of sealant layer can accurately be controlled by moulding step, therefore, there will not be and installs not in place and cause the situation of seal failure; And because the thickness after sealant layer compression is controlled by moulding step, without extra means, thereby can enhance productivity;
The 6th, the utility model sealing after being dismounted for multiple times still can be guaranteed, thereby makes to the utlity model has longer useful life, is the guarantee that provides of after-sale service.
In addition, simple in structure, the easy accessibility of the utility model, cost are low.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model.
Fig. 2 is the enlarged drawing at A place in Fig. 1.
Fig. 3 is phantom of the present utility model.
Fig. 4 is the enlarged drawing at A place in Fig. 3.
Fig. 5 is the structural representation of battery case upper cover in the utility model.
Fig. 6 is the sectional structure schematic diagram (the not compressed distortion of sealant layer 4) of battery case upper cover in the utility model.
Fig. 7 is the uncoated structural representation that has the battery case upper cover of sealant layer in the utility model.
Fig. 8 is the enlarged drawing at A place in Fig. 7.
Wherein, 1-battery case upper cover, 10-lower limb, 11-installing zone, 111-platform area, 112-screw, 12-coating area, 13-moulding step, 2-securing member, 3-battery case lower box, 4-sealant layer.
Embodiment
Below in conjunction with specification drawings and specific embodiments, the utility model and beneficial effect thereof are further described in detail, still, execution mode of the present utility model is not limited to this.
As shown in Figures 1 to 8, the hermetically-sealed construction of a kind of battery case that the utility model provides, comprise battery case upper cover 1, securing member 2 and battery case lower box 3, battery case upper cover 1 is fastening by securing member 2 and battery case lower box 3, the hermetically-sealed construction of this battery case also comprises sealant layer 4, the lower limb 10 of battery case upper cover 1 is provided with for the installing zone 11 of mounting fastener 2 with for applying the coating area 12 of sealant layer 4, and sealant layer 4 is arranged between coating area 12 and battery case lower box 3.During installation, sealant layer 4 can produce compression by the pretightning force of securing member 2, and then the contact interface sealing with battery case lower box 3 by battery case upper cover 1.
Installing zone 11 comprises platform area 111 and is arranged at the screw 112 on platform area 111, and platform area 111 is connected with coating area 12 by moulding step 13, and under normal operating condition, platform area 111 place planes are positioned at the below of coating area 12 place planes.Screw 112 can hold securing member 2 just to be passed through.Certainly, on the top edge of battery case lower box 3, also to arrange and can hold the screw that securing member 2 passes through.
The thickness of sealant layer 4 is more than or equal to the height of moulding step 13.Sealant layer 4 is, by automatic double surface gluer, fluid sealant is applied to coating area 12, the contact interface sealing with battery case lower box 3 by the lower limb of battery case upper cover 1 10 after solidifying.
Installing zone 11 is distributed in the lower limb 10 of battery case upper cover 1 equably.
Battery case upper cover 1 is set to stamping forming panel beating upper cover, and securing member 2 is set to fastening bolt.
Sealant layer 4 is set to layer of polyurethane.Polyurethane can be divided into again two types of the two components of A, B and one-components, and in the utility model, sealant layer 4 is used the conventional polyurethane using of those skilled in the art.
As shown in Figure 6, the cross sectional shape of sealant layer 4 before compression is semicircle, and the cross sectional shape after compression is flat (as shown in Figure 3 and Figure 4).
During actual fabrication, fluid sealant is applied on the coating area 12 of battery case upper cover 1 through the stirring of automatic double surface gluer, after mixing, just being coated with the fluid sealant getting on is in a liquid state, cross section semicircular in shape drops, after foaming, solidify, sticks on battery case upper cover 1 a period of time, at this moment the large appointment of the volume of fluid sealant reaches 3 times before solidifying, and cross section is semicircular in shape drops still, and the ratio of width to height approaches 2/1(as shown in Figure 6).After sealing glue solidifying, form sealant layer 4, at this moment just battery case upper cover 1 and battery case lower box 3 can be assembled, by fastening bolt, pass screw 112 on battery case upper cover 1 and the screw on battery case lower box 3, battery case upper cover 1 and battery case lower box 3 is fastening, under the pretightning force effect of fastening bolt, sealant layer 4 is compressed, and the sealant layer 4 after compression is flat (as shown in Figure 3 and Figure 4), thereby realizes sealing function.Thickness after sealant layer 4 compressions is controlled by the moulding step 11 of battery case upper cover 1, and without extra means, this also can enhance productivity, and reduces production costs.
Wherein, the integral plane of the platform area of clamping screw is lower than the coating area 12 of battery case upper cover 1, after battery case upper cover 1 and 3 lockings of battery case lower box, the upper surface of the plane of platform area and battery case lower box 3 is almost in a plane, be coated with like this between the coating area 12 of battery case upper cover 1 of sealant layer 4 and the top edge of battery case lower box 3 and just have certain gap, thereby can realize the control of sealant layer 4 compression heights, in general, the decrement of sealant layer 4 is controlled between 30%-70% just can realize excellent sealing, therefore, the height design of moulding step 11 can calculate according to the decrement of sealant layer 4, when the height of design moulding step 11, the decrement of sealant layer 4 is generally got 50% and is calculated.
It should be noted that, in battery case, except extending to the high-low pressure interface (not shown) of casing outside, all the other structures are all in complete hermetic box house, and it can reach the degree of protection of IP67.
In the utility model, battery case upper cover 1 can also be set to the upper cover of punch forming and surface treated aluminium sheet upper cover or other metal materials.Surface-treated method is as electrophoresis and anodic oxidation, and surface treatment can increase the adhesive force of sealant layer 4.Securing member 2 can also be set to holding screw or other can play the parts of fastening effect.
The announcement of book and elaboration according to the above description, the utility model those skilled in the art can also change and revise above-mentioned execution mode.Therefore, the utility model is not limited to embodiment disclosed and described above, also should be in the protection range of claim of the present utility model to equivalent modifications more of the present utility model and change.In addition,, although used some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (7)
1. the hermetically-sealed construction of a battery case, comprise battery case upper cover, securing member and battery case lower box, described battery case upper cover is fastening by described securing member and described battery case lower box, it is characterized in that: the hermetically-sealed construction of described battery case also comprises sealant layer, the lower limb of described battery case upper cover is provided with for the installing zone of described securing member being installed and for applying the coating area of described sealant layer, and described sealant layer is arranged between described coating area and described battery case lower box.
2. the hermetically-sealed construction of battery case according to claim 1, it is characterized in that: described installing zone comprises platform area and is arranged at the screw on described platform area, described platform area is connected with described coating area by moulding step, and place, described platform area plane is positioned at the below of place, described coating area plane.
3. the hermetically-sealed construction of battery case according to claim 2, is characterized in that: the thickness of described sealant layer is more than or equal to the height of described moulding step.
4. according to the hermetically-sealed construction of the battery case described in claims 1 to 3 any one, it is characterized in that: described installing zone is distributed in the lower limb of described battery case upper cover equably.
5. the hermetically-sealed construction of battery case according to claim 1, is characterized in that: described battery case upper cover is set to panel beating upper cover or surface treated aluminium sheet upper cover.
6. the hermetically-sealed construction of battery case according to claim 1, is characterized in that: described sealant layer is set to layer of polyurethane.
7. the hermetically-sealed construction of battery case according to claim 1, is characterized in that: described securing member is set to fastening bolt or holding screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271100.3U CN203941956U (en) | 2014-05-26 | 2014-05-26 | The hermetically-sealed construction of battery case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271100.3U CN203941956U (en) | 2014-05-26 | 2014-05-26 | The hermetically-sealed construction of battery case |
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| Publication Number | Publication Date |
|---|---|
| CN203941956U true CN203941956U (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420271100.3U Active CN203941956U (en) | 2014-05-26 | 2014-05-26 | The hermetically-sealed construction of battery case |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489810A (en) * | 2016-01-28 | 2016-04-13 | 江苏金坛汽车工业有限公司 | Battery box structure |
| CN106299175A (en) * | 2015-05-20 | 2017-01-04 | 宁德时代新能源科技股份有限公司 | Power battery pack box and sealing method thereof |
| CN109390513A (en) * | 2017-08-14 | 2019-02-26 | 郑州宇通客车股份有限公司 | Power battery box and power battery module, the vehicle for using the battery case |
| CN110071239A (en) * | 2019-03-27 | 2019-07-30 | 江苏开沃汽车有限公司 | A kind of soft-package battery mould group |
| CN111900278A (en) * | 2019-05-05 | 2020-11-06 | 郑州深澜动力科技有限公司 | Sealed box and use power battery case and new forms of energy vehicle of this box |
| CN112138960A (en) * | 2020-09-22 | 2020-12-29 | 东风汽车集团有限公司 | Method for fixing upper shell and lower shell of power battery pack |
| GB2605683A (en) * | 2021-02-03 | 2022-10-12 | Cummins Inc | Battery pack housing |
| JP2022550521A (en) * | 2020-04-29 | 2022-12-02 | エルジー エナジー ソリューション リミテッド | Battery packs and devices containing them |
-
2014
- 2014-05-26 CN CN201420271100.3U patent/CN203941956U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299175A (en) * | 2015-05-20 | 2017-01-04 | 宁德时代新能源科技股份有限公司 | Power battery pack box and sealing method thereof |
| CN106299175B (en) * | 2015-05-20 | 2019-11-29 | 宁德时代新能源科技股份有限公司 | Power battery pack box and sealing method thereof |
| CN105489810A (en) * | 2016-01-28 | 2016-04-13 | 江苏金坛汽车工业有限公司 | Battery box structure |
| CN105489810B (en) * | 2016-01-28 | 2018-05-25 | 江苏金坛长荡湖新能源科技有限公司 | A kind of battery box structure |
| CN109390513A (en) * | 2017-08-14 | 2019-02-26 | 郑州宇通客车股份有限公司 | Power battery box and power battery module, the vehicle for using the battery case |
| CN110071239A (en) * | 2019-03-27 | 2019-07-30 | 江苏开沃汽车有限公司 | A kind of soft-package battery mould group |
| CN111900278A (en) * | 2019-05-05 | 2020-11-06 | 郑州深澜动力科技有限公司 | Sealed box and use power battery case and new forms of energy vehicle of this box |
| JP2022550521A (en) * | 2020-04-29 | 2022-12-02 | エルジー エナジー ソリューション リミテッド | Battery packs and devices containing them |
| JP7357779B2 (en) | 2020-04-29 | 2023-10-06 | エルジー エナジー ソリューション リミテッド | Battery packs and devices containing them |
| CN112138960A (en) * | 2020-09-22 | 2020-12-29 | 东风汽车集团有限公司 | Method for fixing upper shell and lower shell of power battery pack |
| GB2605683A (en) * | 2021-02-03 | 2022-10-12 | Cummins Inc | Battery pack housing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 352100 Jiaocheng District of Ningde City, Fujian Province Zhang Wan Zhen Xingang Road No. 1 Patentee after: Contemporary Amperex Technology Co.,Ltd. Address before: 1, 1F-, west of Fujian Road, Xingang Road, Zhangzhou Town, Jiaocheng District, Ningde, 352000 Patentee before: CONTEMPORARY AMPEREX TECHNOLOGY Ltd. |