CN106856231A - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN106856231A CN106856231A CN201510903042.0A CN201510903042A CN106856231A CN 106856231 A CN106856231 A CN 106856231A CN 201510903042 A CN201510903042 A CN 201510903042A CN 106856231 A CN106856231 A CN 106856231A
- Authority
- CN
- China
- Prior art keywords
- lower box
- box body
- flow channel
- coolant
- coolant flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention provides a battery pack, including: a lower box body; the battery modules are arranged on the lower box body; the heat conducting piece is arranged between the lower box body and the bottom of the battery module; and the upper box body is fixedly connected with the lower box body and accommodates all the battery modules. Wherein, the lower box body includes lower box body and apron. The lower box body has: the groove is arranged on the inner side of the lower box body, which is contacted with the battery module, or the outer side opposite to the inner side; and the partition plates are accommodated in the grooves to divide the grooves into cooling channels communicated with the outside. The cover plate is fixedly connected to the lower box body and seals the grooves and the cooling flow passages together with the lower box body and the corresponding plurality of partition plates. According to the battery pack, the cooling flow channel is arranged in the lower box body, so that the cooling structure of the battery pack is simplified, the leakage of cooling liquid is avoided to pollute the battery, the short circuit of the battery caused by the cooling liquid is prevented, and meanwhile, the strength of the box body of the battery pack is improved.
Description
Technical field
The present invention relates to field of batteries, more particularly to a kind of battery bag.
Background technology
With the development of power battery technology, requirement of the electric automobile to electrokinetic cell is more and more harsher, right
The energy density of battery bag requires also more and more higher, accordingly to the requirement of power battery pack heat management level
Also it is more and more stricter.Therefore battery liquid cooling system turns into the trend of battery pack thermal management technology development.
The common design of battery liquid cooling system on existing market：Coolant, coolant is driven to exist by liquid pump
Liquid Bottomhole pressure, in the casing of battery bag, the cold pipe of liquid is connected the cold pipe arrangement of liquid with water pipe head, liquid
Cold pipeline envisaged underneath support structures.
Existing battery liquid cooling system has many places to connect in the casing of battery bag, and complex structure is existed
Leakage risk, reliability is low.The cold pipe arrangement of liquid is limited by the limitation of battery bag casing body internal structure, leads
Cause the cold pipeline cross sectional shape of liquid single.
Independent cooling system high cost, and cooling system takes the inner space of battery bag, also to battery
The design of bag force structure causes great adverse effect.
The content of the invention
In view of problem present in background technology, it is an object of the invention to provide a kind of battery bag, its energy
Simplify the cooling structure of battery bag, it is to avoid coolant leakage pollution battery simultaneously prevents coolant from causing battery short
Road, while improving the intensity of battery bag casing.
To achieve these goals, the invention provides a kind of battery bag, it includes：Lower box；It is multiple
Battery modules, are arranged on lower box；Heat-conducting piece, is arranged between lower box and the bottom of battery modules；
And upper box, it is fixedly connected with lower box, and house all of battery modules.
Lower box includes lower box body and cover plate.
Lower box body has：Groove, be arranged at inner side that lower box body contacts with battery modules or with
The relative outside in the inner side；And multiple dividing plates, it is contained in groove and is separated into and outside with by groove
The coolant flow channel of connection.
Cover plate is fixedly connected on lower box body, and with lower box body and corresponding the multiple dividing plate
Groove and coolant flow channel are closed together.
Beneficial effects of the present invention are as follows：
In battery bag of the invention, groove is separated into multiple dividing plates the cooling stream with ft connection
Road, and cover plate is by groove and coolant flow channel closing, when being flowed in coolant flow channel from outside coolant,
Multiple battery modules to being arranged on lower box are cooled down, and because dividing plate closes coolant
In the groove of lower box, the cell of the leakage pollution battery modules of coolant is effectively prevented from, and
Prevent coolant from causing cell short circuit；Be separated for groove by multiple dividing plates by coolant flow channel, is not required to
Want excessive attachment structure, and coolant flow channel be arranged in lower box rather than lower box and battery modules it
Between, can so simplify the cooling structure of battery bag, reduces cost；Meanwhile, lower box and upper box
It is vertically connected with, it is possible to increase the intensity of battery bag casing.
Brief description of the drawings
Fig. 1 is the stereogram according to battery bag of the invention；
Fig. 2 is the stereogram of the lower box of the embodiment according to battery bag of the invention, and its further groove sets
It is placed in the outside of lower box；
Fig. 3 is the stereogram of the lower box of another embodiment according to battery bag of the invention, its further groove
It is arranged at the inner side of lower box；
Fig. 4 is the cooperation schematic diagram of lower box according to battery bag of the invention and upper box；
Fig. 5 is the schematic diagram of the series connection coolant flow channel according to battery bag of the invention；
Fig. 6 is the schematic diagram of the coolant flow channel in parallel according to battery bag of the invention.
Wherein, description of reference numerals is as follows：
The cooling liquid outlet of 1 lower box 115
11 lower box body 116A sides high
111 groove 116B low side surfaces
The cover plate of 112 dividing plate 12
The battery modules of 113 coolant flow channel 2
The 1131 series connection heat-conducting pieces of coolant flow channel 3
1132 upper boxes of coolant flow channel 4 in parallel
The low side surface of 11321 total input duct 41
The side high of 11322 total delivery channel 42
11323 runners in parallel
114 coolant inlets
Specific embodiment
Describe battery bag of the invention in detail with reference to the accompanying drawings.
Referring to figs. 1 to Fig. 6, battery bag of the invention includes：Lower box 1；Multiple battery modules 2,
It is arranged on lower box 1；Heat-conducting piece 3, is arranged between the bottom of lower box 1 and battery modules 2；
And upper box 4, it is fixedly connected with lower box 1, and house all of battery modules 2.
Lower box 1 includes lower box body 11 and cover plate 12.
Lower box body 11 has：Groove 111, is arranged at lower box body 11 and is connect with battery modules 2
Tactile inner side or the outside relative with the inner side；And multiple dividing plates 112, it is contained in groove 111
So that groove 111 to be separated into the coolant flow channel 113 with ft connection.
Cover plate 12 is fixedly connected on lower box body 11, and with lower box body 11 and corresponding described
Multiple dividing plates 112 together close groove 111 and coolant flow channel 113.
Remark additionally herein, reference picture 1, each battery modules 2 itself carry housing (not shown),
Multiple cell (not shown) being arranged side by side are housed in housing.
In battery bag of the invention, groove 111 is separated into multiple dividing plates 112 cooling of connection
Runner 113, and cover plate 12 closes groove 111 and coolant flow channel 113, exists from outside coolant
In coolant flow channel 11 during flowing, the multiple battery modules 2 to being arranged on lower box 1 carry out cooling drop
Temperature, and because be enclosed in coolant in the groove 111 of lower box 1 by dividing plate 12, be effectively prevented from cold
But the cell of battery modules is polluted in the leakage of liquid, and prevents coolant from causing cell short circuit；It is cold
But be separated for groove 111 by multiple dividing plates 112 by runner 113, it is not necessary to excessive attachment structure,
And coolant flow channel 113 is arranged in lower box 1 rather than between lower box 1 and battery modules 2, so
The cooling structure of battery bag, reduces cost can be simplified；Meanwhile, lower box 1 and upper box 4 it is upper and lower
Connection, it is possible to increase the intensity of battery bag casing.
In battery bag of the invention, reference picture 2, Fig. 3, Fig. 5 and Fig. 6, in an embodiment
In, lower box body 11 also has：Coolant inlet 114, one end connects with one end of coolant flow channel 113
Logical, the other end is connected with the coolant feeding pipe (not shown) of the supply coolant of outside；And it is cold
But liquid outlet 115, the other end with coolant flow channel 113 is connected, and the other end is discharged with the coolant of outside
Pipeline (not shown) is connected.The cooling line of outside supply coolant will via coolant inlet 114
Coolant is supplied in coolant flow channel 113, and the coolant in coolant flow channel 113 is via cooling liquid outlet
115 discharge with outside coolant discharge line.
In battery bag of the invention, in one embodiment, lower box 1 can be closed by aluminium alloy or magnesium
Golden die casting is formed.
In battery bag of the invention, in one embodiment, heat-conducting piece 3 can be heat-conducting glue or heat conduction
Pad.
In battery bag of the invention, reference picture 1, in one embodiment, heat-conducting piece 3 is multiple,
Each heat-conducting piece 3 is arranged between lower box 1 and the bottom of a corresponding battery modules 2.
In battery bag of the invention, in one embodiment, upper box 4 can be made up of composite.
In battery bag of the invention, referring to figs. 1 to Fig. 3, in one embodiment, lower box sheet
Body 11 has four sides.
In battery bag of the invention, referring to Figures 1 and 2, in one embodiment, coolant enters
Mouth 114 and cooling liquid outlet 115 are arranged on a side of lower box body 11.
In battery bag of the invention, referring to figs. 1 to Fig. 4, in one embodiment, lower box sheet
For side 116A high, its excess-three side is low side surface 116B in four sides of body 11,
The height that side 116A high is erected is higher than three low side surface 116B.
In battery bag of the invention, reference picture 2 and Fig. 3, in one embodiment, coolant enters
Mouth 114 and cooling liquid outlet 115 are arranged on the side 116A high of lower box body 11.
In battery bag of the invention, reference picture 1 and Fig. 4, in one embodiment, upper box 4
Have：One low side surface 41, the side 116A high with lower box body 11 is relative；And three high
Side 42, three low side surface 116B with lower box body 11 are relative respectively.Of the invention
In battery bag, reference picture 1 and Fig. 4, in one embodiment, the side 116A high of lower box body 11
A L-type structure, when being connected with upper box 4, this L-type structure are formed with three low side surface 116B
The bonding strength of lower box body 11 and upper box 4 can effectively be strengthened.
In battery bag of the invention, in one embodiment, the side 116A high of lower box body 11
It is electrically connected with external equipment (not shown).
In battery bag of the invention, in one embodiment, the side 116A high of box-like body 11
Height can be 80mm~300mm.
In battery bag of the invention, in one embodiment, the low side surface 116B of lower box body 11
Height can be 20mm~100mm.
In battery bag of the invention, in one embodiment, the width of coolant flow channel 113 can be
10mm~120mm.
In battery bag of the invention, in one embodiment, the depth of coolant flow channel 113 can be
2mm~15mm.
In battery bag of the invention, in one embodiment, the width of dividing plate 112 can be
1.0mm~20mm.
In battery bag of the invention, reference picture 5, in one embodiment, 112 points of multiple dividing plates
The coolant flow channel 113 being divided into can be series connection coolant flow channel 1131；Accordingly, coolant inlet 114 and string
Join one end connection of coolant flow channel 1131, cooling liquid outlet 115 and the another of coolant flow channel 1131 that connect
End connection.
In battery bag of the invention, in one embodiment, the width of coolant flow channel 1131 of connecting
Unanimously.
In battery bag of the invention, reference picture 6, in one embodiment, 112 points of multiple dividing plates
The coolant flow channel 113 being divided into is coolant flow channel 1132 in parallel；Accordingly, coolant flow channel in parallel 1132 is wrapped
Include：One total input duct 11321, connects with coolant inlet 114；One total delivery channel 11322,
Connected with cooling liquid outlet 115；And multiple parallel connection runners 11323, with total input duct 11321 and
Total delivery channel 11322 is connected.
In battery bag of the invention, in one embodiment, the width of multiple parallel connection runners 11323
Unanimously.
In battery bag of the invention, in one embodiment, the width of multiple parallel connection runners 11323
It is inconsistent.
In battery bag of the invention, reference picture 6, in one embodiment, the difference of dividing plate 112
Two ends in total input duct 11321 and total delivery channel 11322 are respectively facing total input duct
11321 and total delivery channel 11322 incline, guided with to coolant.
In battery bag of the invention, in one embodiment, height and the groove 111 of dividing plate 112
Depth it is identical.
In battery bag of the invention, in one embodiment, the coolant is distilled water and second two
The mixture of alcohol.
Claims (10)
1. a kind of battery bag, including：
Lower box (1)；
Multiple battery modules (2), are arranged on lower box (1)；
Heat-conducting piece (3), is arranged between the bottom of lower box (1) and battery modules (2)；And
Upper box (4), is fixedly connected with lower box (1), and houses all of battery modules (2)；
Characterized in that,
Lower box (1) includes：
Lower box body (11), has：
Groove (111), is arranged at lower box body (11) and is contacted with battery modules (2)
Inner side or the outside relative with the inner side；And
Multiple dividing plates (112), are contained in groove (111) and divide with by groove (111)
It is divided into the coolant flow channel (113) with ft connection；And
Cover plate (12), is fixedly connected on lower box body (11), and with lower box body (11)
And corresponding the multiple dividing plate (112) is together by groove (111) and coolant flow channel (113)
Closing.
2. battery bag according to claim 1, it is characterised in that lower box body (11) also has
Have：
Coolant inlet (114), one end connects with the one end of coolant flow channel (113), the other end with it is outer
The coolant feeding pipe connection of the supply coolant in portion；And
Cooling liquid outlet (115), the other end with coolant flow channel (113) is connected, the other end with it is outside
Coolant discharge line connection.
3. battery bag according to claim 2, it is characterised in that
Lower box body (11) is with four sides；
Coolant inlet (114) and cooling liquid outlet (115) are arranged at the one of lower box body (11)
On individual side.
4. battery bag according to claim 3, it is characterised in that
For side 116A high, its excess-three side is low in four sides of lower box body 11
Side 116B, the height that side 116A high is erected is higher than three low side surface 116B；
Coolant inlet (114) and cooling liquid outlet (115) are arranged at side 116A high.
5. battery bag according to claim 1, it is characterised in that
The width of coolant flow channel (113) is 10mm~120mm；
The depth of coolant flow channel (113) is 2mm~15mm；
The width of dividing plate (112) is 1.0mm~20mm.
6. battery bag according to claim 2, it is characterised in that
The coolant flow channel (113) that multiple dividing plates (112) are separated into is series connection coolant flow channel (1131)；
Coolant inlet (114) is connected with one end of coolant flow channel of connecting (1131), cooling liquid outlet
(115) connected with the other end of coolant flow channel of connecting (1131).
7. battery bag according to claim 6, it is characterised in that series connection coolant flow channel (1131)
Width it is consistent.
8. battery bag according to claim 2, it is characterised in that
The coolant flow channel (113) that multiple dividing plates (112) are separated into is coolant flow channel in parallel (1132)；
Coolant flow channel (1132) in parallel includes：
One total input duct (11321), connects with coolant inlet (114)；
One total delivery channel (11322), connects with cooling liquid outlet (115)；And
Multiple parallel connections runner (11323), with total input duct (11321) and total delivery channel
(11322) connect.
9. battery bag according to claim 8, it is characterised in that
The width of multiple parallel connections runner (11323) is consistent；Or
The width of multiple parallel connections runner (11323) is inconsistent.
10. battery bag according to claim 8, it is characterised in that the place respectively of dividing plate (112)
Total input duct is respectively facing in the two ends of total input duct (11321) and total delivery channel (11322)
(11321) inclined with total delivery channel (11322), guided with to coolant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903042.0A CN106856231B (en) | 2015-12-09 | 2015-12-09 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903042.0A CN106856231B (en) | 2015-12-09 | 2015-12-09 | Battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106856231A true CN106856231A (en) | 2017-06-16 |
| CN106856231B CN106856231B (en) | 2019-09-17 |
Family
ID=59132348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510903042.0A Active CN106856231B (en) | 2015-12-09 | 2015-12-09 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106856231B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091803A (en) * | 2018-01-18 | 2018-05-29 | 杭州捷能科技有限公司 | A kind of integrated form cooling temperature keeping battery system and its control method |
| CN108258165A (en) * | 2018-01-22 | 2018-07-06 | 华霆（合肥）动力技术有限公司 | Battery case, battery case manufacturing method and battery system |
| CN108682917A (en) * | 2018-05-03 | 2018-10-19 | 惠州亿纬锂能股份有限公司 | A kind of liquid cooling babinet and battery modules |
| CN109428022A (en) * | 2017-08-31 | 2019-03-05 | 宁德时代新能源科技股份有限公司 | battery module and battery pack |
| CN109950654A (en) * | 2019-03-22 | 2019-06-28 | 爱美达（上海）热能系统有限公司 | A kind of battery cooling apparatus |
| CN110429359A (en) * | 2019-08-05 | 2019-11-08 | 江苏远致达轨道交通发展有限公司 | The power battery and battery flat cooling device of integral new-energy passenger |
| CN112542632A (en) * | 2020-12-24 | 2021-03-23 | 湖北亿纬动力有限公司 | Liquid cooling battery box and battery package |
| CN113437391A (en) * | 2021-06-25 | 2021-09-24 | 湖北亿纬动力有限公司 | Box structure and battery |
| CN113471606A (en) * | 2021-07-01 | 2021-10-01 | 广州小鹏汽车科技有限公司 | Battery box body, battery pack and assembly method of battery box body |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428022A (en) * | 2017-08-31 | 2019-03-05 | 宁德时代新能源科技股份有限公司 | battery module and battery pack |
| CN108091803A (en) * | 2018-01-18 | 2018-05-29 | 杭州捷能科技有限公司 | A kind of integrated form cooling temperature keeping battery system and its control method |
| CN108091803B (en) * | 2018-01-18 | 2024-03-29 | 杭州捷能科技有限公司 | Integrated cooling heat-preserving battery system and control method thereof |
| CN108258165A (en) * | 2018-01-22 | 2018-07-06 | 华霆（合肥）动力技术有限公司 | Battery case, battery case manufacturing method and battery system |
| CN108258165B (en) * | 2018-01-22 | 2024-05-07 | 华霆（合肥）动力技术有限公司 | Battery box, battery box manufacturing method and battery system |
| CN108682917A (en) * | 2018-05-03 | 2018-10-19 | 惠州亿纬锂能股份有限公司 | A kind of liquid cooling babinet and battery modules |
| CN109950654A (en) * | 2019-03-22 | 2019-06-28 | 爱美达（上海）热能系统有限公司 | A kind of battery cooling apparatus |
| CN110429359A (en) * | 2019-08-05 | 2019-11-08 | 江苏远致达轨道交通发展有限公司 | The power battery and battery flat cooling device of integral new-energy passenger |
| CN112542632A (en) * | 2020-12-24 | 2021-03-23 | 湖北亿纬动力有限公司 | Liquid cooling battery box and battery package |
| CN113437391A (en) * | 2021-06-25 | 2021-09-24 | 湖北亿纬动力有限公司 | Box structure and battery |
| CN113471606A (en) * | 2021-07-01 | 2021-10-01 | 广州小鹏汽车科技有限公司 | Battery box body, battery pack and assembly method of battery box body |
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| Publication number | Publication date |
|---|---|
| CN106856231B (en) | 2019-09-17 |
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