CN205282524U - Tray, power battery package and electric motor car - Google Patents
Tray, power battery package and electric motor car Download PDFInfo
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- CN205282524U CN205282524U CN201521048819.1U CN201521048819U CN205282524U CN 205282524 U CN205282524 U CN 205282524U CN 201521048819 U CN201521048819 U CN 201521048819U CN 205282524 U CN205282524 U CN 205282524U
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- pallet
- liquid
- electrokinetic cell
- tray
- electric motor
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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
Adopting the cooling method who installs the liquid cooling board in the power battery package in overcoming prior art, need additionally arranging the liquid cooling board, its cost is higher, and its occupation space is great, and the space utilization in the power battery package is low, and simultaneously, there have cooling mode to be single, the relatively poor problem of radiating effect. The utility model provides a tray, power battery package and electric motor car. The power battery package is including tray, battery cell and sealed lid, form installation space between tray and the sealed lid, battery cell installs in the installation space, be equipped with heat dissipation channel on the tray. The utility model provides a power battery package, the structure is more simplified, effective reduce cost, the installation is simple and convenient, and space utilization is higher, possesses direct heat dissipation of tray and the radiating dual effect of liquid cooling.
Description
Technical field
This utility model relates to electric automobiles, especially the electrokinetic cell bag field in electric motor car.
Background technology
It is known that, electrokinetic cell bag is as one of core component in electric motor car, its security performance, duration performance etc. receive much concern, wherein, wrap at electrokinetic cell that to arrange cooling system essential, electrokinetic cell bag can be cooled down by this cooling system, to prevent battery overheated, causes the generation of danger.
At present, existing electrokinetic cell bag generally comprises the pallet for being arranged in electric motor car and some battery modules being installed in pallet, and described battery modules includes housing and the some cells being installed in described housing; Wherein, its cooling system includes liquid cooling plate, and described liquid cooling plate is arranged on described pallet, then described battery modules is placed on liquid cooling plate. Existing liquid cooling plate is generally adopted double layer of metal plate soldering and forms, and liquid cooling plate is connected by soldering into and out of pipeline with coolant. Or spell including polylith liquid cooling plate module. The type of cooling of liquid cooling plate is installed in above-mentioned employing in electrokinetic cell bag, it is necessary to additionally arranging liquid cooling plate, it is relatively costly, and it takes up room relatively big, and the space availability ratio in electrokinetic cell bag is low, concurrently there are methods for cooling single, the problem that radiating effect is poor.
Utility model content
For overcoming, prior art adopts the type of cooling installing liquid cooling plate in electrokinetic cell bag, it is necessary to additionally arranging liquid cooling plate, it is relatively costly, it takes up room relatively big, and the space availability ratio in electrokinetic cell bag is low, simultaneously, there is methods for cooling single, the problem that radiating effect is poor. This utility model provides a kind of pallet, electrokinetic cell bag and electric motor car.
This utility model provides a kind of pallet on the one hand, and described pallet is provided with heat dissipation channel.
Preferably, it is marked with coolant in described heat dissipation channel.
Preferably, described pallet is provided with tube seat, and described heat dissipation channel includes the cold pipe of some liquid; The two ends of the cold pipe of described liquid are provided with coolant inlet and cooling liquid outlet; The cold sealing of tube of described liquid or glue are enclosed in described tube seat. Adopting this kind of mode, its structure is simpler, and technique is easily achieved.
Preferably, described pallet includes base plate and side plate, and described tube seat is arranged on the base plate of described pallet.
Preferably, described base plate includes inner surface and bottom surface, and described tube seat is formed on described bottom surface.
Preferably, the cold pipe of described liquid is integration metallic conduit after flattening.
Preferably, the coolant inlet of the cold pipe of described liquid and cooling liquid outlet are drawn from described side plate.
Preferably, described pallet is provided with the fixed part for being fixed in electric motor car by described pallet.
The pallet that this utility model provides, it is integrated heat dissipation passage on pallet directly, it is not necessary to additionally arranging liquid cooling plate, structure is more simplified, and can effectively reduce cost, and installation process is simple and convenient.
This utility model second aspect provides a kind of electrokinetic cell bag, including pallet, cell and sealing lid; Forming installing space between described pallet and sealing lid, described cell is arranged in described installing space.
Preferably, described cell is directly cohered on the inner surface of tray substrate by thermal plastic insulation. Adopting this kind of mode, monomer whose battery fixing simple and reliable, space reason rate is higher, and the heat that monomer whose battery produces is delivered on tray substrate either directly through thermal plastic insulation, and its heat transfer efficiency is higher.
The electrokinetic cell bag that this utility model provides, directly integrated heat dissipation passage on pallet, need not additionally arrange liquid cooling plate, structure is more simplified, can effectively reduce cost, installation process is simple and convenient, owing to being no longer necessary to liquid cooling plate, space availability ratio in its electrokinetic cell bag is higher, possess pallet directly to dispel the heat and the double effects of liquid-cooling heat radiation, under non-harsh environment, pallet can be passed through directly dispel the heat, without starting liquid-cooling heat radiation (namely without carrying out heat exchange by coolant), only when the shortage of heat produced in electrokinetic cell bag is to dissipate by pallet, just enable this heat dissipation channel to dispel the heat.
This utility model third aspect provides a kind of electric motor car, wherein, including above-mentioned electrokinetic cell bag.
The pallet on electrokinetic cell that this utility model provides, electrokinetic cell bag and electric motor car, electrokinetic cell bag thereon directly integrated heat dissipation passage on pallet, need not additionally arrange liquid cooling plate, structure is more simplified, can effectively reduce cost, installation process is simple and convenient, owing to being no longer necessary to liquid cooling plate, space availability ratio in its electrokinetic cell bag is higher, possess pallet directly to dispel the heat and the double effects of liquid-cooling heat radiation, under non-harsh environment, pallet can be passed through directly dispel the heat, without starting liquid-cooling heat radiation (namely without carrying out heat exchange by coolant), only when the shortage of heat produced in electrokinetic cell bag is to dissipate by pallet, just enable this heat dissipation channel to dispel the heat.
Accompanying drawing explanation
Fig. 1 is the electrokinetic cell bag decomposing schematic representation provided in this utility model detailed description of the invention;
Fig. 2 is the electrokinetic cell bag overall schematic provided in this utility model detailed description of the invention;
Fig. 3 is the cold sealing of tube of liquid provided in this utility model detailed description of the invention reverse side schematic diagram on tray substrate bottom surface;
Fig. 4 is the cold sealing of tube of liquid provided in this utility model detailed description of the invention front schematic view on tray substrate bottom surface.
Wherein, 1, pallet; 2, cell; 3, lid is sealed; 4, the cold pipe of liquid; 10, base plate; 11, side plate; 12, fixed part; 13, tube seat; 101, inner surface; 102, bottom surface; 4a, coolant inlet; 4b, cooling liquid outlet.
Detailed description of the invention
In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.
Embodiment 1
This example is by the pallet that this utility model is provided and is provided with the electrokinetic cell bag of this pallet and carries out specific explanations explanation, as shown in Figure 1 and Figure 2, including pallet 1, cell 2 with seal lid 3; Forming installing space between described pallet 1 and sealing lid, described cell 2 is arranged in described installing space; Wherein, after cell 2 first can be assembled into battery modules, then battery modules is arranged in described installing space. Directly cell 2 can also be arranged in this installing space. Cell 2 is public domain, and it needs the power etc. of output to be designed according to electrokinetic cell bag, and such as, in this example, cell 2 adopts capacity to be 20AH (ampere-hour), and rated voltage is the rectangular cell of 3.2V (volt).
Wherein, described pallet 1 is provided with heat dissipation channel, is marked with coolant in described heat dissipation channel. Coolant is generally water or oil, it is possible to think coolant.
Being typically in described electrokinetic cell bag or be provided externally with battery management system, this is public domain, no longer introduces.
Pallet 1 is used to hold above-mentioned cell 2, and electrokinetic cell bag is fixed on the carrier in electric motor car. It is made for the metal material that heat conduction is excellent.
So-called heat dissipation channel, refers to hold coolant, transfers heat away from passage, pipeline etc. Its concrete form and processing technology are not particularly limited, as long as it can play carries out heat exchange by coolant.
This example is integrated heat dissipation passage on pallet directly, when installing electrokinetic cell bag, it is not necessary to additionally arranging liquid cooling plate, structure is more simplified, and can effectively reduce cost, and installation process is simple and convenient.
Giving a kind of concrete heat dissipation channel in this example, as shown in Figure 3, Figure 4, described pallet 1 is provided with tube seat 13, and described heat dissipation channel includes the cold pipe 4 of some liquid; The two ends of the cold pipe 4 of described liquid are provided with coolant inlet 4a and cooling liquid outlet 4b; The cold pipe of described liquid 4 welds or glue is enclosed in described tube seat 13. The cold pipe 4 of described liquid can be only have one, it is also possible to for a plurality of, specifically arranges position about tube seat 13, is also not particularly limited, as long as the heat that cell 2 produces can be derived by it. In this example, the cold pipe of this liquid 4 is welded in described tube seat 13. Adopting this kind of mode, its structure is simpler, and technique is easily achieved. Above-mentioned coolant inlet 4a connects with the coolant circuit that electrokinetic cell bag is external respectively with cooling liquid outlet 4b, realizes heat exchange with external coolant circuit. Such as, when the heat produced in electrokinetic cell bag is bigger, raw heat of being contracted for fixed output quotas by electrokinetic cell is distributed by this coolant circuit further, after outside coolant circuit carries out heat exchange, it is re-cooled in the cold pipe 4 of liquid entering electrokinetic cell bag, such iterative cycles cooling electrokinetic cell bag. If electrokinetic cell bag is under low temperature environment, also by external coolant circuit, the coolant after heating is sent in the cold pipe 4 of liquid in electrokinetic cell bag, with heated power battery bag.
As shown in Figure 3, Figure 4, described pallet 1 includes base plate 10 and 4 side plates 11, and described tube seat 13 is arranged on the base plate 10 of described pallet 1. This tube seat 13 can be arranged on base plate 10, as preferred mode, it is also possible to is also provided with tube seat 13 on side plate 11. Certainly, only arranging tube seat 13 on side plate 11, be fixed in the tube seat 13 on this side plate 11 by cold for liquid pipe 4, be also feasible, simply weak effect is a little. In this example, the base plate 10 of pallet 1 arranges tube seat 13.
Specifically, described base plate 10 includes inner surface 101 and bottom surface 102, and this tube seat 13 can be arranged on the inner surface 101 of base plate 10, it is also possible to is arranged on the bottom surface 102 of base plate 10. In this example, described tube seat 13 is formed on described bottom surface 102.
The shape of the cold pipe 4 of liquid and tube seat 13 matches, and it can be the shape of rule, it is also possible to for irregular shape, such as, the cold pipe of described liquid 4 and tube seat 13 are serpentine-like.
The cold pipe 4 of described liquid is the integrated metallic conduit after flattening. Such as, adopting copper pipe, aluminum pipe or other conduction of heat metal tube faster to flatten and form the cold pipe 4 of this liquid, the preferred aluminum pipe when meeting radiating efficiency, advantage is lighter in weight. The size of the cold pipe 4 of its liquid cooling capacity as required is designed, and electrokinetic cell bag cell 2 is more many, and the heat of its generation is more many, and its cooling requires higher, and the cross-sectional area of the cold pipe 4 of its liquid just can be arranged larger, and length is more longer. Such as, in this example, the cross sectional dimensions of the cold pipe 4 of its liquid is about 350mm2. The pipe thickness of the cold pipe 4 of liquid is 1.5mm-1.8mm.
The position that arranges of the coolant inlet 4a and cooling liquid outlet 4b of the cold pipe 4 of described liquid is generally drawn from side plate 11, such as draws from the same side plate 11 of described pallet 1 or draws from relative two side plate 11 of described pallet 1 or draw from adjacent two side plate 11 of described pallet 1. In this example, described coolant inlet 4a and cooling liquid outlet 4b draws from same side plate 11.
If adopting and in advance cell 2 being assembled into battery modules, then battery modules is arranged on the mode on above-mentioned pallet 1 again, more space can be taken, cause that space availability ratio is low. Therefore, in this example, it is preferable that described cell 2 directly coheres on the inner surface 101 of pallet 1 base plate 10 by thermal plastic insulation. Adopting this kind of mode, monomer whose battery 2 fixing simple and reliable, space availability ratio is higher, and the heat that monomer whose battery 2 produces is delivered on pallet 1 base plate 10 either directly through thermal plastic insulation, and its heat transfer efficiency is higher.
As Figure 1-Figure 4, described pallet 1 is provided with the fixed part 12 being fixed in electric motor car for described pallet 1. This fixed part 12 is provided with screw (unmarked in figure), is coordinated with screw by bolt, is fixedly mounted in electric motor car by pallet 1.
The electrokinetic cell bag that this example provides, directly integrated heat dissipation passage on pallet 1, need not additionally arrange liquid cooling plate, structure is more simplified, can effectively reduce cost, installation process is simple and convenient, owing to being no longer necessary to liquid cooling plate, space availability ratio in its electrokinetic cell bag is higher, possess pallet 1 directly to dispel the heat and the double effects of liquid-cooling heat radiation, under non-harsh environment, pallet 1 can be passed through directly dispel the heat, without starting liquid-cooling heat radiation (namely without carrying out heat exchange by coolant), only when the shortage of heat produced in electrokinetic cell bag is to dissipate by pallet 1, just enable this heat dissipation channel to dispel the heat.
Embodiment 2
This example provides a kind of electric motor car, including the electrokinetic cell bag described in embodiment 1. This electrokinetic cell bag is generally fixed to bottom electric motor car. If electric bus, it is also possible to it is fixed on the top of electric motor car or other installation sites. Electrokinetic cell bag in electric motor car is only improved by this example, and not to other structures in electric motor car, and the position of electric motor car improves, and above-mentioned electrokinetic cell bag has carried out specific explanations explanation in above-described embodiment 1, therefore, repeats no more.
The electric motor car that this example provides, electrokinetic cell bag thereon is integrated heat dissipation passage on pallet 1 directly, need not additionally arrange liquid cooling plate, structure is more simplified, can effectively reduce cost, installation process is simple and convenient, owing to being no longer necessary to liquid cooling plate, space availability ratio in its electrokinetic cell bag is higher, possess pallet 1 directly to dispel the heat and the double effects of liquid-cooling heat radiation, under non-harsh environment, pallet 1 can be passed through directly dispel the heat, without starting liquid-cooling heat radiation (namely without carrying out heat exchange by coolant), only when the shortage of heat produced in electrokinetic cell bag is to dissipate by pallet 1, just enable this heat dissipation channel to dispel the heat.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model.
Claims (11)
1. a pallet, it is characterised in that described pallet is provided with heat dissipation channel.
2. pallet according to claim 1, it is characterised in that be marked with coolant in described heat dissipation channel.
3. pallet according to claim 2, it is characterised in that described pallet is provided with tube seat, described heat dissipation channel includes the cold pipe of some liquid; The two ends of the cold pipe of described liquid are provided with coolant inlet and cooling liquid outlet; The cold sealing of tube of described liquid or glue are enclosed in described tube seat.
4. pallet according to claim 3, it is characterised in that described pallet includes base plate and side plate, and described tube seat is arranged on the base plate of described pallet.
5. pallet according to claim 4, it is characterised in that described base plate includes inner surface and bottom surface, described tube seat is formed on described bottom surface.
6. pallet according to claim 4, it is characterised in that the cold pipe of described liquid is integration metallic conduit after flattening.
7. pallet according to claim 6, it is characterised in that the coolant inlet of the cold pipe of described liquid and cooling liquid outlet are drawn from described side plate.
8. pallet according to claim 6, it is characterised in that described pallet is provided with the fixed part for being fixed in electric motor car by described pallet.
9. an electrokinetic cell bag, including pallet, cell and and seal lid; Forming installing space between described pallet and sealing lid, described cell is arranged in described installing space;
It is characterized in that, described pallet is the pallet in claim 1-8 described in any one.
10. electrokinetic cell bag according to claim 9, it is characterised in that described cell is directly cohered on the inner surface of tray substrate by thermal plastic insulation.
11. an electric motor car, it is characterised in that include the electrokinetic cell bag described in any one in claim 9-10.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048819.1U CN205282524U (en) | 2015-12-16 | 2015-12-16 | Tray, power battery package and electric motor car |
| PCT/CN2016/108087 WO2017101679A1 (en) | 2015-12-16 | 2016-11-30 | Tray, power battery pack and electric vehicle |
| EP16874736.8A EP3376556A4 (en) | 2015-12-16 | 2016-11-30 | Tray, power battery pack and electric vehicle |
| US16/004,033 US20180294452A1 (en) | 2015-12-16 | 2018-06-08 | Tray, power battery pack and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048819.1U CN205282524U (en) | 2015-12-16 | 2015-12-16 | Tray, power battery package and electric motor car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205282524U true CN205282524U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521048819.1U Active CN205282524U (en) | 2015-12-16 | 2015-12-16 | Tray, power battery package and electric motor car |
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| Country | Link |
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| CN (1) | CN205282524U (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299541A (en) * | 2016-10-09 | 2017-01-04 | 浙江吉利控股集团有限公司 | A kind of electrokinetic cell bag liquid cooling system |
| CN106299544A (en) * | 2016-10-21 | 2017-01-04 | 法乐第(北京)网络科技有限公司 | Battery modules and battery bag |
| CN106299191A (en) * | 2016-10-21 | 2017-01-04 | 法乐第(北京)网络科技有限公司 | Battery system for vehicle and the pallet for battery system |
| CN106340695A (en) * | 2016-10-10 | 2017-01-18 | 苏州协鑫集成储能科技有限公司 | Battery module and preparation method thereof |
| CN106410319A (en) * | 2016-10-09 | 2017-02-15 | 浙江吉利控股集团有限公司 | Integrated liquid-cooling device of battery tray |
| WO2017101679A1 (en) * | 2015-12-16 | 2017-06-22 | 比亚迪股份有限公司 | Tray, power battery pack and electric vehicle |
| CN107528020A (en) * | 2016-06-17 | 2017-12-29 | Sk新技术株式会社 | Secondary battery |
| CN107634161A (en) * | 2017-09-07 | 2018-01-26 | 河南新太行电源股份有限公司 | Battery case and battery with radiating tube |
| CN107768562A (en) * | 2016-08-23 | 2018-03-06 | 本特勒尔汽车技术有限公司 | Battery carrier with cooling system |
| WO2018090857A1 (en) * | 2016-11-18 | 2018-05-24 | 比亚迪股份有限公司 | Power battery base carrier and power battery module |
| CN108075065A (en) * | 2016-11-18 | 2018-05-25 | 比亚迪股份有限公司 | Battery pack |
| CN108258161A (en) * | 2018-01-02 | 2018-07-06 | 苏州安靠电源有限公司 | The cold battery case of liquid and its preparation method, box type battery |
| CN108390127A (en) * | 2018-04-13 | 2018-08-10 | 苏州安靠电源有限公司 | A kind of liquid cooling battery case and its preparation method |
| CN108389993A (en) * | 2018-04-13 | 2018-08-10 | 苏州安靠电源有限公司 | Liquid cooling battery case and its preparation method |
| CN108448019A (en) * | 2017-02-16 | 2018-08-24 | 福特全球技术公司 | Traction battery integrated form hot plate and pallet |
| CN109565007A (en) * | 2016-08-01 | 2019-04-02 | 奇昊汽车德国有限责任公司 | The temperature equipment of accumulator housing for transport facility |
| CN110190228A (en) * | 2019-06-21 | 2019-08-30 | 比亚迪股份有限公司 | Power battery pack and vehicle |
| CN110246999A (en) * | 2018-03-09 | 2019-09-17 | 本特勒汽车工业有限责任公司 | Manufacture the method for installing the battery bracket of battery module |
| CN110854320A (en) * | 2018-08-21 | 2020-02-28 | Sk新技术株式会社 | Battery module and battery pack including the same |
| CN111430596A (en) * | 2019-01-09 | 2020-07-17 | 比亚迪股份有限公司 | Power battery pack and electric vehicle |
| CN112117508A (en) * | 2019-06-21 | 2020-12-22 | 比亚迪股份有限公司 | Power battery pack and vehicle with same |
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| CN112886087A (en) * | 2019-11-29 | 2021-06-01 | 比亚迪股份有限公司 | Cooling and heat transferring structure of power battery and vehicle |
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2015
- 2015-12-16 CN CN201521048819.1U patent/CN205282524U/en active Active
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| WO2017101679A1 (en) * | 2015-12-16 | 2017-06-22 | 比亚迪股份有限公司 | Tray, power battery pack and electric vehicle |
| CN107528020B (en) * | 2016-06-17 | 2024-03-29 | Sk新能源株式会社 | Secondary battery pack |
| CN107528020A (en) * | 2016-06-17 | 2017-12-29 | Sk新技术株式会社 | Secondary battery |
| CN109565007B (en) * | 2016-08-01 | 2021-10-08 | 奇昊汽车德国有限责任公司 | Temperature control device for a battery housing of a vehicle |
| CN109565007A (en) * | 2016-08-01 | 2019-04-02 | 奇昊汽车德国有限责任公司 | The temperature equipment of accumulator housing for transport facility |
| CN107768562A (en) * | 2016-08-23 | 2018-03-06 | 本特勒尔汽车技术有限公司 | Battery carrier with cooling system |
| CN106410319A (en) * | 2016-10-09 | 2017-02-15 | 浙江吉利控股集团有限公司 | Integrated liquid-cooling device of battery tray |
| CN106299541A (en) * | 2016-10-09 | 2017-01-04 | 浙江吉利控股集团有限公司 | A kind of electrokinetic cell bag liquid cooling system |
| CN106299541B (en) * | 2016-10-09 | 2019-02-26 | 浙江吉利控股集团有限公司 | A kind of power battery pack liquid cooling system |
| CN106340695A (en) * | 2016-10-10 | 2017-01-18 | 苏州协鑫集成储能科技有限公司 | Battery module and preparation method thereof |
| CN106299191A (en) * | 2016-10-21 | 2017-01-04 | 法乐第(北京)网络科技有限公司 | Battery system for vehicle and the pallet for battery system |
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| CN107634161A (en) * | 2017-09-07 | 2018-01-26 | 河南新太行电源股份有限公司 | Battery case and battery with radiating tube |
| CN108258161A (en) * | 2018-01-02 | 2018-07-06 | 苏州安靠电源有限公司 | The cold battery case of liquid and its preparation method, box type battery |
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| US11955651B2 (en) | 2019-01-09 | 2024-04-09 | Byd Company Limited | Power battery pack and electric vehicle |
| CN110190228A (en) * | 2019-06-21 | 2019-08-30 | 比亚迪股份有限公司 | Power battery pack and vehicle |
| CN112117508A (en) * | 2019-06-21 | 2020-12-22 | 比亚迪股份有限公司 | Power battery pack and vehicle with same |
| WO2021098428A1 (en) * | 2019-11-18 | 2021-05-27 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
| CN112886087A (en) * | 2019-11-29 | 2021-06-01 | 比亚迪股份有限公司 | Cooling and heat transferring structure of power battery and vehicle |
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