CN214542389U - Battery module and energy storage battery pack plug-in box - Google Patents
Battery module and energy storage battery pack plug-in box Download PDFInfo
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- CN214542389U CN214542389U CN202120414373.9U CN202120414373U CN214542389U CN 214542389 U CN214542389 U CN 214542389U CN 202120414373 U CN202120414373 U CN 202120414373U CN 214542389 U CN214542389 U CN 214542389U
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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 application provides a battery module and energy storage battery pack subrack, include: the battery cell structure comprises a first side plate, a second side plate, a battery cell structure and a connecting sheet; the first side plate and the second side plate are distributed on two sides of the battery cell structure; the battery cell structure comprises at least two battery cell groups which are arranged side by side and laid down laterally; every two adjacent electric core groups are connected in series; the battery core group comprises a plurality of battery cores, and the battery cores are connected through the connecting sheets; the outermost poles on the battery cell structure point to the first side plate and the second side plate respectively; the battery module that this application relates to can be better satisfy the dimensional requirement of standard rack, and reduce the connecting piece between the battery monomer, not only practice thrift the cost but also improved the reliability of connecting.
Description
Technical Field
The application relates to the technical field of new energy electrochemistry energy storage, in particular to a battery module and an energy storage battery pack plug-in box.
Background
The box type lithium battery pack comprises a plurality of lithium battery single bodies connected in series, a box shell metal plate and a related fixing assembly. The battery pack monomer connected in series is fixedly positioned in the box body through an upper bracket plastic part and a lower bracket plastic part, the upper plastic bracket and the lower plastic bracket are fixedly connected together through a screw fastening solid phase through a left side cover plate and a right side cover plate on two sides, and the plastic assembly and the battery monomer which are packaged together are positioned in the center of the box body through a front partition plate metal plate fixing part and a rear partition plate metal plate fixing part. The nominal voltage of the lithium battery pack of the box type structure is generally 48V at present, the nominal voltage is limited by the length, the width, the height and the like of a standard cabinet, soft-package batteries or small-size batteries and small-capacity batteries are mostly adopted during design, the appearance of the flexibly designed box body is met by the mode of multiple parallel 16 strings or 15 strings, the energy storage capacity of the whole battery pack is limited by the number of parallel monomers and the size of the monomer capacity, but the energy storage capacity cannot exceed the corresponding size requirement, and the energy storage capacity of 2.5kwh is mostly common in the market at present.
Firstly, the inside of a 2.5kwh battery pack commonly available in the market at present mostly adopts a multi-parallel connection mode to reach a corresponding energy storage capacity level, and more battery monomers need to be connected in parallel to achieve a higher level of energy storage capacity. The more the number of the single cells is, the more strict the requirement on the consistency of the single cells is, so that the series-parallel connection of the battery cells with more number can greatly reduce the overall performance of the whole battery pack. Meanwhile, most box type battery modules in the market adopt a totally enclosed design for achieving the corresponding IP dustproof grade effect, and the heat dissipation condition of a battery stack is not considered. When the battery pack is fully loaded with high-power output, the battery monomers are accumulated in the battery box after being heated and cannot be released or can only be diffused to the shell metal plate in a slow heat transfer mode through internal heat flow gas, and the method is a great potential safety hazard.
Secondly, the more the number of the battery monomers connected in series and parallel inside the battery is, the more connecting pieces are needed, and the more complicated the welding process is; this not only increases the corresponding cost but also the corresponding unreliability of the connection, which is rather disadvantageous for the safe use of the battery pack. And if adopt the battery box of laminate polymer battery core in groups although can be nimble in groups and can effectively reduce weight, still need undertake the risk of electric core swell when the place use that atmospheric pressure is lower, this life requirement with greatly reduced group battery.
SUMMERY OF THE UTILITY MODEL
To the technical problem in the background art, this application provides a can reduce the connecting piece between the battery monomer, can improve whole heat dispersion's battery module again.
The application is realized by the following technical scheme:
a battery module, comprising: the battery cell structure comprises a first side plate, a second side plate, a battery cell structure and a connecting sheet; the first side plate and the second side plate are distributed on two sides of the battery cell structure; the battery cell structure comprises at least two battery cell groups which are arranged side by side and laid down laterally; every two adjacent electric core groups are connected in series; the battery core group comprises a plurality of battery cores, and the battery cores are connected through the connecting sheets; the pole column on the outermost side of the battery cell structure points to the first side plate and the second side plate respectively.
Furthermore, the connecting sheet is made of aluminum.
Furthermore, the number of the electric core groups is two, and the two electric core groups are connected in series through a conducting wire. Furthermore, the battery module also comprises a bottom plate, an upper cover and a bracket structure; the support structure is used for fixing the battery cell structure; the support structure and the battery cell structure are arranged between the bottom plate and the upper cover; a heat conducting plate is arranged between the support structure and the upper cover.
Furthermore, a grid structure is arranged on the surface of one side of the heat conducting plate, and protruding structures which are distributed in a display mode are arranged on the surface of the other side of the heat conducting plate.
Further, the heat-conducting plate also comprises a first heat-conducting sheet; the support structure comprises an upper support and a lower support; the upper bracket and the lower bracket are both provided with heat dissipation holes; the first heat conducting fin is attached to the heat dissipation hole.
Further, still include the heat conduction piece, the heat conduction piece sets up in between lower carriage and the bottom plate.
Further, the heat conducting plate further comprises second heat conducting fins, and the second heat conducting fins are arranged between the heat conducting plate and the upper cover and between the heat conducting block and the bottom plate.
Furthermore, the heat conducting plate and the heat conducting block are made of aluminum; the first heat conducting strip and the second heat conducting strip are made of silica gel.
The application also discloses an energy storage battery pack plug-in box, the car includes above-mentioned arbitrary scheme battery module.
Adopt above-mentioned technical scheme, battery module and car that this application provided have following beneficial effect: distributing the first side plate and the second side plate on two sides of the cell structure comprising at least two side-by-side inverted cells; two sides of each electric core are provided with polar columns, and two opposite polar columns on every two adjacent electric cores are connected through the connecting sheets; two pole columns on the outermost side of the battery cell structure point to the first side plate and the second side plate respectively; make the battery module that this application relates to can be better satisfy the dimensional requirement of standard rack, and reduce the connecting piece between the battery monomer, both practice thrift the cost and improved the reliability of connecting again.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of the heat conducting plate in fig. 1.
In the figure: 1-bottom plate, 2-heat conducting block, 4-lower support, 5-second side plate, 6-connecting plate, 7-rear partition plate, 8-rear cover, 9-cell structure, 91-cell group, 10-upper support, 11-upper cover, 12-heat conducting plate, 121-grid structure, 14-first side plate, 15-front partition plate, 16-left and right ears, 17-handle, 18-front plate, 88-heat dissipation hole and 99-first heat conducting plate.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the present application. In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
1-bottom plate, 2-heat conducting block, 4-lower support, 5-second side plate, 6-connecting plate, 7-rear partition plate, 8-rear cover, 9-cell structure, 91-cell group, 10-upper support, 11-upper cover, 12-heat conducting plate, 121-grid structure, 122-bulge structure, 14-first side plate, 15-front partition plate, 16-left and right ears, 17-handle, 18-front plate, 88-heat dissipation hole and 99-first heat conducting plate.
As shown in fig. 1, the battery module according to the embodiment of the present application includes: the battery cell structure comprises a first side plate 14, a second side plate 5, a battery cell structure 9 and a connecting sheet 6; the first side plate 14 and the second side plate 5 are distributed on two sides of the cell structure 9; the cell structure 9 comprises at least two side-by-side and side-by-side arranged cell groups 91; every two adjacent electric core groups 91 are connected in series; the battery core group 91 comprises a plurality of battery cells, and the battery cells are connected through the connecting sheet 6; the outermost poles of the cell structure 9 point to the first side plate 14 and the second side plate 5 respectively.
In the embodiment of the application, the first side plate 14 and the second side plate 5 are distributed on two sides of the cell structure 9 including at least two cells which are reversely arranged side by side; two sides of each electric core are provided with polar columns, and two opposite polar columns on each two adjacent electric cores are connected through the connecting sheet 6; the two outermost poles on the cell structure 9 point to the first side plate 14 and the second side plate 5 respectively; make the battery module that this application relates to can be better satisfy the dimensional requirement of standard rack, and reduce the connecting piece between the battery monomer, both practice thrift the cost and improved the reliability of connecting again.
In another embodiment of the present application, the connecting piece 6 may be made of aluminum.
In another embodiment of the present application, the number of the electric core groups 91 is two, and two electric core groups 91 are connected in series through a conducting wire.
In another embodiment of the present application, the battery module further includes a bottom plate 1, an upper cover 11, and a bracket structure; the support structure is used for fixing the cell structure 9; the support structure and the cell structure 9 are arranged between the bottom plate 1 and the upper cover 11; a heat conducting plate 12 is arranged between the support structure and the upper cover 11.
In another embodiment of the present application, as shown in fig. 2, one side surface of the heat-conducting plate 12 is provided with a grid structure 121, and the other side surface of the heat-conducting plate 12 is provided with a raised structure 122 distributed in an array.
In another embodiment of the present application, a first heat-conducting sheet 99; the support structure comprises an upper support 10 and a lower support 4; heat dissipation holes 88 are formed in the upper bracket 10 and the lower bracket 4; the first heat-conducting fin 99 is attached to the heat dissipation hole 88.
In another embodiment of the present application, the heat conducting block 2 is further included, and the heat conducting block 2 is disposed between the lower bracket 4 and the bottom plate 1.
In another embodiment of the present application, a second heat-conducting fin is further included, and the second heat-conducting fin is disposed between the heat-conducting plate 12 and the upper cover 11 and between the heat-conducting block and the bottom plate 1.
In another embodiment of the present application, the heat-conducting plate 12 and the heat-conducting block 2 are made of aluminum; the first heat-conducting strip 99 and the second heat-conducting strip are made of silica gel.
Based on the above embodiments, the present application will be described in more detail with reference to a more specific embodiment.
As shown in fig. 1 to 2, the battery module according to the present embodiment includes: the battery pack comprises a bottom plate 1, an upper cover 11, a rear cover 8, a front plate 18 provided with an electric quantity adapter plate and an external wiring terminal, a front baffle plate 15 provided with a battery management system BMS (the front baffle plate 15 is arranged between a battery cell structure 9 and the front plate 18), a rear baffle plate 7 playing a role in separating and positioning (the rear baffle plate 7 is arranged between the battery cell structure 9 and the rear cover 8), a support structure for fixing the battery cell structure 9 (comprising an upper support 10 and a lower support 4, the upper support 10 is arranged between the battery cell structure 9 and the upper cover 11, the lower support 4 is arranged between the battery cell structure 9 and the bottom plate 1), a first side plate 14 and a second side plate 5 (the first side plate 14, the second side plate 5, the rear cover 8 and the front plate 18 jointly surround the periphery of the battery cell structure 9) playing a role in insulation protection and fixing a battery, and a heat conduction plate 12 (an aluminum plate can be selected); the bottom plate 1, the upper cover 11, the rear cover 8, the front plate 18 and the like can be sheet metal parts; the bracket structure, the first side plate 14, the second side plate 5 and the like can be made of plastic parts; heat dissipation holes 88 (only partially shown) for facilitating heat release are formed in the upper bracket 10 and the lower bracket 4; a grid structure 121 (grid) for enhancing the heat conduction effect is designed on one side of the heat conduction plate 12, and a protrusion structure 122 (similar to the heat dissipation hole 88 in shape) is arranged on the other opposite side of the heat conduction plate 12. In order to further achieve the gapless heat conduction effect, first heat conduction fins 99 (heat conduction silicone fins, not all shown) having a thickness of about 1mm (which may be 0.5mm to 1.5mm) and having a shape similar to that of the heat dissipation holes 88 are attached to the heat dissipation holes 88 of the upper bracket 10 and the heat dissipation holes 88 of the lower bracket 4.
In this embodiment, the first side plate 14 and the second side plate 5 are distributed on two sides of the battery cell structure 9; the cell structure 9 comprises at least two side-by-side and side-by-side arranged cell groups 91; every two adjacent electric core groups 91 are connected in series through a large conducting wire; the battery core group 91 comprises a plurality of battery cells, and the battery cells are connected through the connecting pieces 6 (not all shown in the figure); the outermost poles of the cell structure 9 point to the first side plate 14 and the second side plate 5 respectively. So, the large capacity electric core of adoption is in groups side by side through the mode that the side was fallen, and the dimensional requirement of current standard rack of satisfying that can be fine, simultaneously, the large capacity electric core is in groups used electric core quantity still less, and used connecting piece also still less, has both practiced thrift the cost and has improved the reliability of connecting to can satisfy the demand of single battery box large capacity.
In addition, the battery module further comprises a heat conduction block 2 and a left lug and a right lug 16 (sheet metal parts) which are used for being installed and fixed with a standard cabinet; the heat transfer from the cell structure 9 to the bottom plate 1 is performed through the heat-conducting block 2 installed in the heat dissipation hole 88 of the lower bracket 10; the cell structure 9 further includes a connecting sheet 6 between the cells and a conductive connecting line (not shown) for the batteries on both sides. In addition, in order to achieve a better heat dissipation effect, a second heat conduction sheet (not shown in the figure) with a corresponding area can be additionally designed between the heat conduction plate 12 and the upper cover 11 and between the heat conduction block 2 and the bottom plate 1, and the second heat conduction sheet can be a heat conduction silicone sheet.
During assembly, firstly, the battery cell is placed on the lower support 4 side by side, then the upper support 10 is installed, the lower support 4, the battery cell structure 9 and the upper support 10 are attached tightly in advance through the glass fiber adhesive tape, the connecting sheet 6 is welded on a pole of the battery cell through a laser welding method, and the first side plate 14 and the second side plate 5 are fastened on the upper support 10 and the lower support 4 through screws respectively. First heat-conducting fins 99 (silicone pieces) having the same shape as the heat-radiating holes 88 are attached to the heat-radiating holes 88 of the upper holder 10 and the lower holder 4. In the heat dissipation holes 88 of the lower frame 4, the first heat conduction sheet 99 is filled with the heat conduction block 2 (the shape may be the same as or similar to the heat dissipation holes 88). The battery pack packaged by the plastic structural member is arranged on the bottom plate 1 by utilizing the micro viscosity of the silica gel sheet, then the rear partition plate 7 is installed and connected with the rear end series lead, and the front partition plate 15 is installed and the battery management system BMS (not specifically shown) is installed on the front partition plate. After the transition heat conducting plate 12 is installed, the rear cover 8 and the front plate 18 with the handle 17 installed in advance are screwed on the side and the bottom, and finally the upper cover 11 and the left and right ears 16 are installed.
The embodiment of the application also provides an energy storage battery pack plug-in box, which comprises the battery module according to any one of the above embodiments.
While the foregoing is directed to the preferred embodiment and specific embodiments of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the application, and it is intended that such changes and modifications be covered by the scope of the application.
Claims (10)
1. A battery module, comprising: the battery cell structure comprises a first side plate, a second side plate, a battery cell structure and a connecting sheet;
the first side plate and the second side plate are distributed on two sides of the battery cell structure; the battery cell structure comprises at least two battery cell groups which are arranged side by side and laid down laterally;
every two adjacent electric core groups are connected in series;
the battery core group comprises a plurality of battery cores, and the battery cores are connected through the connecting sheets;
the pole column on the outermost side of the battery cell structure points to the first side plate and the second side plate respectively.
2. The battery module according to claim 1, wherein the connecting sheet is made of aluminum.
3. The battery module according to claim 1, wherein the number of the electric core groups is two, and the two electric core groups are connected in series through a lead.
4. The battery module of claim 1, further comprising a base plate, an upper cover, and a bracket structure;
the support structure is used for fixing the battery cell structure;
the support structure and the battery cell structure are arranged between the bottom plate and the upper cover;
a heat conducting plate is arranged between the support structure and the upper cover.
5. The battery module according to claim 4, wherein the heat-conducting plate is provided at one side surface thereof with a grid structure and at the other side surface thereof with a protrusion structure in an array distribution.
6. The battery module according to claim 5, further comprising a first heat-conductive sheet;
the support structure comprises an upper support and a lower support;
the upper bracket and the lower bracket are both provided with heat dissipation holes;
the first heat conducting fin is attached to the heat dissipation hole.
7. The battery module according to claim 6, further comprising a heat conduction block disposed between the lower holder and the base plate.
8. The battery module according to claim 7, further comprising second heat-conductive sheets disposed between the heat-conductive plate and the upper cover and between the heat-conductive block and a bottom plate.
9. The battery module according to claim 7, wherein the heat-conducting plate and the heat-conducting block are made of aluminum; the first heat conducting strip and the second heat conducting strip are made of silica gel.
10. An energy storage battery pack box comprising a battery module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120414373.9U CN214542389U (en) | 2021-02-25 | 2021-02-25 | Battery module and energy storage battery pack plug-in box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120414373.9U CN214542389U (en) | 2021-02-25 | 2021-02-25 | Battery module and energy storage battery pack plug-in box |
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| Publication Number | Publication Date |
|---|---|
| CN214542389U true CN214542389U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120414373.9U Active CN214542389U (en) | 2021-02-25 | 2021-02-25 | Battery module and energy storage battery pack plug-in box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566747A (en) * | 2022-03-07 | 2022-05-31 | 楚能新能源股份有限公司 | Energy storage battery box with leakage protection function and preparation method |
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2021
- 2021-02-25 CN CN202120414373.9U patent/CN214542389U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566747A (en) * | 2022-03-07 | 2022-05-31 | 楚能新能源股份有限公司 | Energy storage battery box with leakage protection function and preparation method |
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