CN204167420U - A kind of lithium ion battery and lithium ion battery bag - Google Patents

A kind of lithium ion battery and lithium ion battery bag Download PDF

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Publication number
CN204167420U
CN204167420U CN201420620639.5U CN201420620639U CN204167420U CN 204167420 U CN204167420 U CN 204167420U CN 201420620639 U CN201420620639 U CN 201420620639U CN 204167420 U CN204167420 U CN 204167420U
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CN
China
Prior art keywords
battery
lithium ion
ion battery
fin
unit
Prior art date
Application number
CN201420620639.5U
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Chinese (zh)
Inventor
谷业明
肖宁强
李潇
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北汽福田汽车股份有限公司
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Priority to CN201420620639.5U priority Critical patent/CN204167420U/en
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Publication of CN204167420U publication Critical patent/CN204167420U/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model provides a kind of lithium ion battery and lithium ion battery bag, and wherein lithium ion battery comprises: cover plate and base plate, and is placed on the many Battery packs unit between described cover plate and described base plate; Described every Battery pack unit comprises multiple battery cell; Described cover plate is connected with described base plate and forms the frame-type structure of two sides opening, forms air channel between described frame-type structure and described multiple battery unit; Described lithium ion battery also comprises radiator structure, is contacted dispel the heat to it between described radiator structure with described multiple battery cell by face.Described lithium ion battery drawn together by described lithium ion battery handbag.The utility model improves the radiating efficiency of lithium ion battery and lithium ion battery bag, and make that its structure is simple, simple for assembly process, maintenance easily.

Description

A kind of lithium ion battery and lithium ion battery bag

Technical field

The utility model relates to electric powered motor source technology field, particularly relates to a kind of lithium ion battery and lithium ion battery bag.

Background technology

The development of present new-energy automobile is presenting the situation of accelerated development, in order to the air quality problems that reply causes because existing automobile uses fossil fuel, as the secondary square flexible package lithium ion of new-energy automobile main power source by a large amount of uses.Because car power source needs high power and jumbo power brick, need these battery modules to be carried out being electrically connected to fetch each other reach instructions for use, traditional battery module needs to be fixed on substrate, end plate and support bar, these structures are used for guaranteeing the dynamic stability of power brick, when a large amount of battery modules needs fixing, the overall structure stability of battery pack also needs special consideration.But due to the spatial limitation of automobile and the requirement of production efficiency, power brick and the compactedness of battery module and the complexity of manufacture are had higher requirement, so usually need to be manufactured compact structure to adapt to the requirement that takes up room to automobile.

And the serviceability temperature of flexible packing lithium ion battery bag has certain limit, the too high or non-uniform temperature of the too low and temperature of temperature all can affect life-span and the charge-discharge performance of power brick.Hybrid electric vehicle crosses the high rate charge-discharge that can cause lithium ion battery bag discontinuity in journey in different situations, the discharge and recharge of large multiplying power can produce very large heat, if and a large amount of heats effectively can not be arranged and falls apart to outside, power brick serviceability temperature can be caused to increase to in serviceability temperature prescribe a time limit, its useful life will be affected and reduce efficiency for charge-discharge.

Each battery module in existing power brick is separately fixed at substrate, the method of cooling has air-cooled and water-cooled two kinds of modes, air-cooled is adopt to arrange gap between battery cell and battery cell in module, make air-flow by the small gaps between rectangular cell monomer by blower fan, lower the temperature, or between the substrate of self-contained battery module and base plate, have certain distance to form independent air channel, stretch into air channel by fin, cool in the heat conduction of battery to air channel; But battery module does not have integrated air channel in the power brick of this kind of method, need to design air channel in addition, cause whole battery pack structure complicated, number of spare parts is many, integrated level is low, arrange dumb, packaging technology is complicated, when battery module quantity is many, the overall structure stability of battery also can reduce, fin simultaneously in module between battery cell and battery cell stretches out from module side, and battery cell is also only have fin of simultaneously fitting, and is not easy the object reaching Homogeneouslly-radiating.

And water-cooling pattern uses cooled plate, by installing conducting strip between battery and battery additional, the heat of battery is transmitted in cooled plate by conducting strip and cools; And existing water cooling system structure is complicated, cost is high, and requires higher to the technical merit of maintenance personal.

Chinese patent CN 202839897 discloses a kind of power brick, comprise the lower carriage that center is formed with multiple battery case, the upper bracket be fixedly connected with lower carriage and the battery pack be clamped between carrier parts that is fixed, also comprise even thermal, described even thermal comprises the radiating bottom plate be fixedly connected on bottom lower carriage, be folded in the multiple radiating fins be fixedly connected with radiating bottom plate between two adjacent cell and through lower carriage, but still do not solve the problem of heat dissipation problem and spatial placement preferably.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of lithium ion battery and lithium ion battery bag, and improve the radiating efficiency of lithium ion battery and lithium ion battery bag and make its structure simple, simple for assembly process, maintenance easily.

For solving the problem, the utility model provides a kind of lithium ion battery, comprises cover plate and base plate, and is placed on the many Battery packs unit between described cover plate and described base plate; Described every Battery pack unit comprises multiple battery cell; Described cover plate is connected with described base plate and forms the frame-type structure of two sides opening, forms air channel between described frame-type structure and described many Battery packs unit; Described lithium ion battery also comprises radiator structure, is contacted dispel the heat to it between described radiator structure with described multiple battery cell by face.

One as technique scheme is improved, and wherein, described radiator structure contacts with the two sides of described battery cell and dispels the heat.

One as technique scheme is improved, and wherein, described radiator structure is be arranged on the multiple fin between every two described battery cells.

One as technique scheme is improved, and wherein, is also provided with plastic parts between described fin and described battery cell.

One as technique scheme is improved, and wherein, described radiator structure comprises and is multiplely arranged on the fin extending between described battery cell and from described battery cell both sides and form fin structure.

One as technique scheme is improved, and wherein, described frame-type structure has multiple ventilation slot.

One as technique scheme is improved, and wherein, top and the bottom of each described battery unit arrange end plate respectively.

One as technique scheme is improved, and wherein, cover plate and base plate and battery unit are fixed by fixing boom.

One as technique scheme is improved, wherein, be electrically connected by electrode supporting block between described battery cell, be electrically connected between described battery unit by electrode connecting plate, folded being located at of the described battery unit of many groups is externally electrically exported by two Electrode connection assemblies together.

The utility model also provides a kind of lithium ion battery bag, and any one lithium ion battery above-mentioned drawn together by described lithium ion battery handbag.

By the utility model and prior art are contrasted, known lithium ion battery of the present utility model and lithium ion battery bag surround the frame-type structure of two sides opening by being connected with base plate by cover plate, many Battery packs unit is placed in this frame-type structure, and and formed between this frame-type structure can the air channel that flows through of air feed, do not need the aeration structure arranging separately other, thus make its structure simple, maintenance easily, simple for assembly process, and there is good radiating efficiency.

Accompanying drawing explanation

Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:

Figure 1 shows that the lithium ion battery perspective view that the utility model embodiment provides;

Figure 2 shows that the exploded isometric structural representation of the battery unit of the lithium ion battery of Fig. 1;

Figure 3 shows that the schematic perspective view of the battery unit of Fig. 2;

Figure 4 shows that the detonation configuration schematic diagram of the lithium ion battery of Fig. 1;

Figure 5 shows that the plan structure schematic diagram of the lithium ion battery bag that the utility model embodiment provides.

Description of reference numerals

1 lithium ion battery 10 cover plate 11 hanging part 12 ventilation slot

13 screwed hole 20 base plate 30 battery unit 31 battery cells

311 electrode connecting piece 32 fin 321 electrode supporting blocks

322 fin structure 33 end plate 34 connecting hole 35 plastic parts

40 electrode connecting parts 50 electrode protective plate 51 delivery outlets 61 fix boom

62 connecting bolt 70 electrode connecting plate 2 lithium ion battery bag 8 air channels

9 main air ducts

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.

In the utility model, when not doing contrary explanation, the noun of locality such as " upper and lower, left and right " of use typically refers to the direction as shown in Figure of description.

Figure 1 shows that the structural representation of the lithium ion battery 1 of the utility model embodiment.Refer to Fig. 1, lithium ion battery of the present utility model comprises cover plate 10, base plate 20, many Battery packs unit 30 and radiator structure, cover plate 10 is connected with base plate 20, form the frame-type structure with two sides opening, can pass through by air feed, many Battery packs unit 30 is placed in this frame-type structure, and be formed with air channel 8 between this frame-type structure and many Battery packs unit 30, enter into air channel 8 for making wind thus battery unit 30 is cooled, radiator structure is arranged in battery unit 30 to be contacted by face with battery unit 30 and dispels the heat to it, battery unit 30 both sides are stretched out in radiator structure two sides, the heat that battery unit 30 produces can be delivered in air channel 8, thus heat is taken away by the wind of process in air channel 8.

Lithium ion battery 1 of the present utility model by self with air channel 8 ventilating and cooling is carried out to many Battery packs unit 30, do not need to arrange independent air channel at inside lithium ion cell, make lithium ion battery 1 integrated level high, simple for assembly process, simplify the structure of whole lithium ion battery 1, thus increase the structural stability of whole lithium ion battery 1, also reduce cost simultaneously; Also avoid adopting the complex structure that the type of cooling of water-cooled causes, the problem that maintenance cost is high.

Refer to Fig. 2 and Fig. 3, battery unit 30 comprises multiple battery cell 31, radiator structure and end plate 33.Multiple battery cell 31 mounted on top, radiator structure is interspersed to be arranged between multiple battery cell 31, and in the utility model embodiment, radiator structure is be arranged on the multiple fin 32 contacted with battery cell 31 respectively in battery unit 30.The metal material that fin 32 adopts heat conductivility good is made, and preferably adopt the thin panel beating of aluminum to make, the heat that battery cell 31 can be made to produce like this is delivered to heat radiation fast, on 32, and the wind thermal contact conductance that fin 32 part extend in air channel and flows through.Certain the utility model does not limit the form of radiator structure, and in other embodiments, radiator structure can also be can carry out the form such as the radiating tube of heat conduction or the radiator structure of radiating block or directly setting to battery cell 31.

Further, multiple fin 32 contacts with the two sides of battery cell 31 by preferred employing to dispel the heat to it, avoid only having one side to contact with the fin arranged between the battery cell of existing battery unit in the past, and the low and uneven problem of dispelling the heat of the radiating efficiency caused, adopt two sides contact heat radiation can improve heat conduction and radiating efficiency, thus to make in lithium ion battery 1 homogeneous temperature everywhere, and make each battery unit 30 stably be in normal serviceability temperature scope, thus increase the useful life of lithium ion battery 1.

Further, the radiator structure in the utility model embodiment is also provided with the structure for support cells monomer 31 on fin 32.Such as shown in Fig. 2, the utility model embodiment adopts the mode of injection moulding directly on fin 32, to arrange plastic parts 35, makes the two sides of each fin 32 respectively by this plastic parts 35 indirectly and battery cell 31 thermal contact conductance.This plastic parts 35 is the heat conduction plastic cement that heat conductivility is good, intermediate portion is divided into network structure, surrounding forms frame-type structure, and offers multiple connecting hole 34 in the frame-type structure of surrounding, so that the frame formation outside of each battery unit 30 entirety is used for fixing connecting through hole.Fin 32 adds plastic parts 35, can support battery cell 31 and avoid battery cell 31 directly to contact with fin 32 wearing and tearing caused; And good cushioning effect can be played, reduce and in use shake the impact that lithium battery overall structure is caused; Be delivered on fin 32 even heat that lithium ion battery 1 can also be made to produce in use procedure and carry out heat conduction, be unlikely to heat build-up and harmful effect is caused to lithium ion battery 1.

Certain the utility model embodiment is not limited to this, in other embodiments, plastic parts 35 can be connected with fin 32 by other syndetons, certainly plastic parts 35 can not also be set, and adopt the mode of full-filling heat conductive silica gel between this fin 32 and battery cell 31, also can achieve the above object.

Further, each fin 32 is protruding from the both sides of plastic parts 35, and outwardly directed edge upwards turns down a length, shown in Fig. 2, thus form multiple fin structure 322 in the both sides of multiple battery cell 31, multiple fin structure 322 is extended in air channel 8, and all maintains suitable distance between every two fin structures 322, can be used for distinguished and admirable warp between it, thus to cool fin.

Like this, the heat that each battery cell 31 produces is delivered on fin 32 by plastic parts 35, heat is delivered in air channel 8 by fin structure 322 by fin 32, when have in air channel 8 wind blow into time namely can directly and fin structure 322 carry out heat exchange, therefore the contact area of wind and fin 32 is increased, again because the gap between fin structure 322 can make the wind in air channel pass through smoothly, thus can rapidly the heat on fin 32 be taken away.This kind of method compared to existing technology in the mode of air-cooled passage is set separately for lithium ion battery, effectively can improve the radiating efficiency of lithium ion battery, and compare with the above embodiments, the cooling effect arranging fin structure 322 is better, its increase heat-conducting area can improve the cooling degree to battery unit 30 further, multiple fin structure 322 stretches out from both sides can accelerate radiating efficiency, thus ensures the normal work of lithium ion battery.

If certainly fin 32 there is no plastic parts 35 by the edge of fin 32 from directly to extend between two battery cells 31 and upwards turnover forms fin structure 322.

End plate 33 is placed on top layer and the bottom of battery unit 30, be made up of fin and plastic parts equally, it carries out firm to each battery cell 31 arranged therebetween and compresses, it also can belong to a part for radiator structure, further heat transmission is carried out to the bottom surface of the end face of the battery cell 31 of top layer and the battery cell 31 of bottom, the degree of heat radiation of battery cell 31 is consistent as much as possible, ensures the integral heat sink effect of lithium ion battery 1.

Fix by two electrode supporting blocks 321 and be electrically connected between two battery cells 31 adjacent in the utility model embodiment battery unit 30, two electrode supporting blocks 321 are fixed on the edge of the fin 32 between two battery cells 31 or are fixed on the edge of plastic parts 35, and the battery cell adjacent with this fin 32 31 to be fixed on electrode supporting block 321 by himself upper two electrode connecting piece 311 arranged and to be connected electrically.

Refer to Fig. 4, many Battery packs unit 30 stacks successively, and many Battery packs unit 30 is electrically connected by electrode connecting plate 70 between any two, and each lithium ion battery 1 is externally electrically exported by two Electrode connection assemblies 40.At lithium ion battery 1, there are the electrode connecting piece 311 side the superiors and be also provided with electrode protective plate 50, electrode protective plate 50 offers the delivery outlet 51 externally carrying out electrically output for power pole coupling assembling 40.

Refer to Fig. 4, base plate 20 is for supporting many Battery packs unit 30, the supporting construction at its edge raised up for dual-side has, this edge raised up offers screwed hole, and is preset with certain gap between the edge raised up and many Battery packs unit 30.

Cover plate 10 is downwards and " C " type structure of covering of base plate 20, the dual-side of cover plate 10 has the edge extended laterally, this edge offers screwed hole 13 equally, edge for raising up with base plate 20 is connected and fixed by connecting bolt 62, thus forms frame-type structure and hold many Battery packs unit 30.Cover plate 10 is provided with multiple ventilation slot 12, air channel 8 can be entered into for making the wind outside lithium ion battery 1 to cool battery, increasing ventilation slot 12 can assist frame-type structure that the air quantity in air channel 3 is increased, and improves self-forming air channel 3 further to the cooling effect of multiple battery unit 30 and cooling effectiveness.Also being provided with multiple fixing hole in the housing edge of cover plate 10, cover plate 10 sidewall being also provided with the hanging part 11 for opening cover plate 10.

Lithium ion battery 1 of the present utility model adopts fixing boom 61 to run through the fixing hole on cover plate 10 and itself and base plate 20 are fixed by the connecting through hole of many Battery packs unit 30 that vertically stacks.Be formed with air channel 8 too between the battery unit 30 of every two groups of parallel placements of the lithium ion battery 1 fixed, air feed is through entering in this air channel 8 and extending in fin structure 322 heat conduction in this air channel 8.

Refer to Fig. 5, the utility model also provides a kind of lithium ion battery bag 2, it comprises multiple lithium ion battery 1, and each lithium ion battery 1 dispels the heat by having independently air channel 8 separately, and multiple lithium ion battery 1 is electrically connected each other, parallel mode of ventilating is adopted to dispel the heat, i.e. multiple lithium ion battery 1 opposing parallel placement between two, middle forms main air duct 9, the wind of both sides, front and back from air channel 8 behind lithium ion battery 1 inside, flow out along main air duct 9, circulate successively.The cooling degree that therefore can ensure each lithium ion battery 1 is equal, makes lithium ion battery bag 2 have higher radiating efficiency, ensures its normal work further and increases its useful life.

In sum, lithium ion battery of the present utility model at least has following advantage:

1. in lithium ion battery of the present utility model, by the many Battery packs unit stacked successively and preset that certain distance formed between lid and base plate and between the two Battery pack unit be arranged in parallel can the passage that flows through of air feed, make each lithium ion battery have independently heat dissipation wind channel, and do not need to arrange separately air channel at inside lithium ion cell or increase other ventilation unit.And the lithium ion battery bag that multiple lithium ion battery is formed adopts and arranges parallel for lithium ion battery, reserved in-between too can the passage that flows through of air feed, thus make lithium ion battery of the present utility model and lithium ion battery pack arrangement simple and compact, simple for assembly process, maintenance is easily.

2. in an embodiment of lithium ion battery of the present utility model, radiator structure is made up of multiple fin, and multiple fin contacts with the battery cell two sides of battery unit and carries out heat conduction, the situation of fitting in a face compared to existing is advantageously in the conduction of heat, thus improve battery cell heat conduction and radiating efficiency, ensure that the degree of heat radiation everywhere in lithium ion battery is identical, thus heat throughout is even in it, ensure that the efficiency for charge-discharge of battery cell and lithium ion battery entirety increases its useful life further.

3. in an embodiment of lithium ion battery of the present utility model, fin stretches out from the both sides of battery cell, and the limit of edge's turnover one length upwards extended in both sides forms fin structure, fin structure is in air channel, heat by battery cell is delivered in air channel by fin, dispel the fin structure of backing in air channel apoplexy, take away heat, and then cooling is carried out to battery cell.Simultaneously by form that the fin structure of fin stretches out from both sides, add the contact area of fin and wind, compared to the structure advantageously multiple battery cell degree of heat radiation of battery in the conduction and guarantee lithium ion battery of heat that existing fin stretches out from side, more can make battery cell within the scope of good serviceability temperature, thus ensure the efficiency for charge-discharge of lithium ion battery entirety, and improve useful life.

Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection range of the present utility model.

It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.

In addition, also can carry out combination in any between various different execution mode of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (10)

1. a lithium ion battery (1), comprises cover plate (10) and base plate (20), and is placed on the many Battery packs unit (30) between described cover plate (10) and described base plate (20); It is characterized in that, described every Battery pack unit (30) comprises multiple battery cell (31); Described cover plate (10) is connected with described base plate (20) and forms the frame-type structure of two sides opening, forms air channel (8) between described frame-type structure and described many Battery packs unit (30); Described lithium ion battery (1) also comprises radiator structure, is contacted dispel the heat to it between described radiator structure with described multiple battery cell (31) by face.
2. a kind of lithium ion battery according to claim 1, is characterized in that: described radiator structure contacts with the two sides of described battery cell (31) and dispels the heat.
3. a kind of lithium ion battery according to claim 2, is characterized in that: described radiator structure is for being arranged on the multiple fin (32) between every two described battery cells (31).
4. a kind of lithium ion battery according to claim 3, is characterized in that: be also provided with plastic parts (35) between described fin (32) and described battery cell (31).
5. a kind of lithium ion battery according to claim 1, is characterized in that: described radiator structure comprises and is multiplely arranged on the fin (32) extending between described battery cell (31) and from described battery cell (31) both sides and form fin structure (322).
6. a kind of lithium ion battery according to claim 1, is characterized in that: described frame-type structure has multiple ventilation slot (12).
7. a kind of lithium ion battery according to claim 1, is characterized in that: top and the bottom of each described battery unit (30) arrange end plate (33) respectively.
8. a kind of lithium ion battery according to claim 1, is characterized in that: cover plate (10) and base plate (20) and battery unit (30) are fixed by fixing boom (61).
9. a kind of lithium ion battery according to claim 1, it is characterized in that: by electrode supporting block (321) electrical connection between described battery cell (31), by electrode connecting plate (70) electrical connection between described battery unit (30), folded being located at of the described battery unit of many groups (30) is externally electrically exported by two Electrode connection assemblies (40) together.
10. a lithium ion battery bag (2), is characterized in that: described lithium ion battery bag (2) comprises the lithium ion battery (1) as described in claim 1-9 any one.
CN201420620639.5U 2014-10-24 2014-10-24 A kind of lithium ion battery and lithium ion battery bag CN204167420U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105810866A (en) * 2016-05-07 2016-07-27 沈丹 Suspension ventilation device
CN106784504A (en) * 2017-02-24 2017-05-31 南通鼎鑫电池有限公司 A kind of lithium ion battery with high efficiency heat radiation
CN106848121A (en) * 2017-02-24 2017-06-13 南通鼎鑫电池有限公司 A kind of lithium ion battery
CN107039704A (en) * 2017-03-13 2017-08-11 浙江零跑科技有限公司 A kind of composite radiating type battery modules
WO2020016286A1 (en) * 2018-07-18 2020-01-23 Mahle International Gmbh Storage battery assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105810866A (en) * 2016-05-07 2016-07-27 沈丹 Suspension ventilation device
CN105810866B (en) * 2016-05-07 2018-06-26 沈丹 A kind of suspension type ventilation device
CN106784504A (en) * 2017-02-24 2017-05-31 南通鼎鑫电池有限公司 A kind of lithium ion battery with high efficiency heat radiation
CN106848121A (en) * 2017-02-24 2017-06-13 南通鼎鑫电池有限公司 A kind of lithium ion battery
CN106848121B (en) * 2017-02-24 2019-08-23 南通鼎鑫电池有限公司 A kind of lithium ion battery
CN107039704A (en) * 2017-03-13 2017-08-11 浙江零跑科技有限公司 A kind of composite radiating type battery modules
WO2020016286A1 (en) * 2018-07-18 2020-01-23 Mahle International Gmbh Storage battery assembly

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GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20180511

Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing

Patentee after: Beijing treasure Car Co., Ltd.

Address before: 102206, Beijing, Shahe Town, Changping District Road, sand Yang

Patentee before: Beiqi Futian Automobile Co., Ltd.