CN109360912A - Battery module and power battery thereof - Google Patents
Battery module and power battery thereof Download PDFInfo
- Publication number
- CN109360912A CN109360912A CN201811222148.4A CN201811222148A CN109360912A CN 109360912 A CN109360912 A CN 109360912A CN 201811222148 A CN201811222148 A CN 201811222148A CN 109360912 A CN109360912 A CN 109360912A
- Authority
- CN
- China
- Prior art keywords
- battery
- battery modules
- baffle
- side plate
- battery core
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims description 55
- 239000007788 liquid Substances 0.000 claims description 25
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000014759 maintenance of location Effects 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 10
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of batteries, in particular to a battery module and a power battery thereof. The battery module is used for installing the battery cell and comprises at least one group of battery cell fixing unit, the battery cell fixing unit comprises side plates and baffle plates, the side plates comprise first side plates and second side plates which are symmetrically arranged, the baffle plates comprise first baffle plates and second baffle plates which are symmetrically arranged, and the first side plates, the second side plates, the first baffle plates and the second baffle plates are enclosed to form a battery cell accommodating cavity. Compared with the prior art, the battery module and the power battery thereof have the advantages that the battery cell fixing units are arranged in the battery module, and the densely arranged battery cells are separately installed, so that the battery cells are prevented from moving in the battery module, a better heat dissipation effect is achieved, and the service life of the power battery is prolonged.
Description
Technical field
The present invention relates to battery technology fields, more particularly to a kind of battery modules and its power battery.
Background technique
As the appearance of national new policy and new energy power car are promoted, more and more attention has been paid to related dynamic for power battery
Power battery box material type selecting (lightweight, thermally conductive), structure design (automation, high efficiency assembling), the type of cooling (self-heating is cooling,
It is air-cooled, liquid cooling, direct-cooled) etc. designs also become the theme of current research.
Since New energy electric bus is to the more demanding of electrokinetic cell system, need meeting high power charging-discharging process
While, the temperature of battery system is controlled at 55 degree hereinafter, to guarantee that battery while working long hours, extends battery
Service life.
In addition, Battery case sealing (IP67) also to be achieved, insulation, weighing, energy density ratio etc. require, also need to pass through
The power battery pack security performance of national regulation examines by force requirement, and only meeting above-mentioned requirements could entrucking bulletin use.
Existing battery modules, battery core is generally all closely spaced together, and in charge and discharge process, battery core can be distributed greatly
The heat of amount, this compact arranged structure are unfavorable for battery core and radiate, and are easy to damage battery core, and then influence power
The service life of battery；Secondly, the combination that this kind of multiple battery cores are arranged together, it is difficult to battery core be fixed, in vehicle
During traveling, the case where being easy to happen battery core play, also battery core is be easy to cause to damage, influence power battery uses the longevity
Life.
In view of this, the present inventor especially has developed a kind of battery modules and its thus power battery, this case generate.
Summary of the invention
Battery modules battery core close-packed arrays to solve the problems, such as above-mentioned are unfavorable for radiating and may cause battery core play, this
Invention provides a kind of battery modules and its power battery.
To achieve the above object, The technical solution adopted by the invention is as follows: a kind of battery modules, the battery modules are used
In installation battery core, including at least one set of battery core fixed cell, the battery core fixed cell include side plate and baffle, the side plate packet
The first side plate and the second side plate being arranged symmetrically are included, the baffle includes the first baffle and second baffle being arranged symmetrically, described
First side plate, the second side plate, first baffle, second baffle surround battery core accommodating chamber.
Further, battery core fixed cell further includes third baffle, and the third baffle is set in battery core accommodating chamber, will
Battery core accommodating chamber is divided into two chambers.
Further, the first retention mechanism is equipped between third baffle and side plate, first retention mechanism is used for will
Third baffle is fixed between the first side plate, the second side plate.
Further, battery core fixed cell further includes press strip, and the press strip is set at the top of battery core accommodating chamber, for fixing
Position of the battery core in battery core accommodating chamber.
It further, further include the second retention mechanism, press strip both ends are connected with baffle by second retention mechanism respectively
It connects.
Further, side plate is made from a material that be thermally conductive with baffle.
A kind of power battery, including battery case and multiple battery cores further include multiple above-mentioned battery modules, the battery
Modular arrangements are set in battery case, and the battery core is set in battery modules, and the battery modules are for separating installation electricity
Core.
It further, further include aluminium row, the aluminium row is set at the top of battery modules, enables phase for connecting battery core positive and negative anodes
Adjacent battery modules carry out serial or parallel connection.
It further, further include BMS control device, the BMS control device is set to the side of battery modules, for managing
Manage the running of battery modules.
Further, further include cooling system, the cooling system be set between battery modules and battery case, for pair
Battery modules radiate.
Further, cooling system includes top cooling system, lower part cooling system, and the top cooling system is used for
To radiating at the top of battery modules, the lower part cooling system is for radiating to battery modules bottom and side.
Further, top cooling system includes radiator, fan, and the radiator is set at the top of battery modules, institute
The fan stated is set at the top of radiator.
Further, lower part cooling system includes liquid cooling plate and liquid cooling pipe, and the liquid cooling plate is recycled equipped with coolant liquid
Pipeline, the coolant liquid circulation line are connected with liquid cooling pipe.
Further, liquid cooling plate is set to the bottom of battery modules.
Further, liquid cooling pipe is set to the side of battery modules.
By the above-mentioned description of this invention it is found that compared with prior art, a kind of battery modules of the invention and its power
The battery core of dense arrangement is separated installation, is preventing battery core from existing by battery by the way that battery core fixed cell is arranged in battery modules
In battery modules while play, better heat dissipation effect is reached, the service life of power battery is enable to extend.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of battery core fixed cell of the present invention；
Fig. 2 is the structural schematic diagram of single battery mould group of the present invention；
Fig. 3 is the structural schematic diagram of the multiple battery modules assembled states of the present invention；
Fig. 4 is the structural schematic diagram of the multiple battery modules decomposing states of the present invention；
Fig. 5 is the structural schematic diagram of power battery of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in the present invention
It states, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.
Shown in referring to Fig.1~Fig. 5, the invention discloses a kind of power batteries, are set side by side including battery case 1 and three
Battery modules 2, the battery modules 2 are set in battery case 1, and the battery modules 2 include battery core fixed cell 3 and multiple
Battery core 4, the battery core 4 are set in battery core fixed cell 3, battery core fixed cell 3 fixed by battery core fixed cell 3, described
For preventing battery core 4 upper and lower play or left and right play in battery modules 2, battery core 4 is avoided to loosen and influence making for power battery
Use effect.
The battery core fixed cell 3 includes side plate 31 and baffle 32, and the side plate 31 includes the first side plate being arranged symmetrically
311 and second side plate 312, the baffle 32 include the first baffle 321 and second baffle 322 being arranged symmetrically, first side
Plate 311, the second side plate 312, first baffle 321, second baffle 322 surround battery core accommodating chamber 33；First side plate 311,
Multiple battery cores 4 are separated by the second side plate 312, first baffle 321, second baffle 322, avoid battery core 4 concentrate in together and
Influence the heat dissipation effect of battery modules.
The battery core fixed cell 3 further includes third baffle 323, and the third baffle 323 is set to battery core accommodating chamber
In 33, and battery core accommodating chamber 33 is divided into two chambers, the third baffle 323 is further separated battery core 4, reinforces
The fixed effect of battery core 4 and the heat dissipation effect of battery modules；First is equipped between the third baffle 323 and side plate 31
Retention mechanism 34, first retention mechanism 34 are used to third baffle 323 being fixed on the first side plate 311, the second side plate 312
Between.
The side plate 31 and baffle 32 are not limited by material, Heat Conduction Material that can be good by lightweight, heat conduction and heat radiation
It is made, the Heat Conduction Material includes aluminium alloy, magnesium alloy, composite material, carbon fiber etc..
The battery core fixed cell 3 further includes press strip 35, and the press strip 35 is set to 33 top of battery core accommodating chamber, is used for
Position of the fixed battery core 4 in battery core accommodating chamber 33；It further include the second retention mechanism 36, second retention mechanism 36 is by press strip
25 both ends are fixedly connected with baffle 32 respectively.
The power battery further includes aluminium row 5, and the mode that the aluminium row 5 is fastened by bolts or welds is fixed on electricity
2 top of Chi Mo group, the aluminium row 5 enable adjacent battery modules 2 carry out serial or parallel connection for connecting the positive and negative anodes of battery core 4；
The arrangement that aluminium row 5 can be carried out according to the power demand of power battery, reaches better using effect.
The power battery further includes BMS control device 6, and the BMS control device 6 is set to the side of battery modules 2
Side, the BMS control device 6 be used for intelligent management battery modules 2 running, prevent battery modules 2 occur overcharge or
Overdischarge extends the service life of battery modules.
The power battery further includes cooling system 7, the cooling system 7 be set to battery modules 2 and battery case 1 it
Between, for radiating to battery modules；The cooling system 7 includes top cooling system 71, lower part cooling system 72, institute
The top cooling system 71 stated is used for radiating at the top of battery modules 2, and the lower part cooling system 72 is used for battery
2 bottom of mould group and side are radiated；The cooling side that this kind is combined using top cooling system 71, lower part cooling system 72
Formula can carry out comprehensive heat dissipation to battery modules, have better heat dissipation effect.
The top cooling system 71 includes radiator 711, fan 712, and the radiator 711 is set to battery modules
2 tops, for radiating at the top of battery modules 2；The fan 712 is set to 711 top of radiator, for radiator
711 are cooled down；Thermal conductive silicon rubber mat 713, the thermal conductive silicon rubber mat are equipped between the radiator 711 and battery modules 2
713 conduct the heat of battery modules 2 to radiator 711, meanwhile, radiator 711 carries out damping, noise reduction；The radiator
Sealing joint strip is equipped between 711 and battery case 1, the sealing joint strip is used for sealed cell case 1, prevents in merging battery case 1
The cell device in portion is oxidized, and power battery is made to have longer service life.
The lower part cooling system 72 includes liquid cooling plate 721 and liquid cooling pipe 722, and the liquid cooling plate 721 is equipped with cold
But liquid circulation line, the coolant liquid circulation line are connected with liquid cooling pipe 722；The liquid cooling plate 721 is set to battery mould
The bottom of group 2, the liquid cooling pipe 722 are set to the side of battery modules 2；The lower part cooling system 72 and BMS control fill
6 electrical connections are set, the BMS control device 6 carries out intelligent control to lower part cooling system 72 by detection battery core temperature, realizes
When battery modules 2 when the temperature is excessively high, lower part cooling system 72 is rapidly cooled battery modules 2.
Power battery as described above, battery core 4 are separated fixed installation by battery core fixed cell 3, make battery core 4 will not
Intensive is arranged together, during power battery carries out charge and discharge, heat that battery core fixed cell 3 generates battery core 4
It distributes in outside, and is radiated by top cooling system 71, lower part cooling system 72, reach better heat dissipation effect；Institute
The combination of the side plate 31, baffle 32 and press strip 35 stated is firmly fixed battery core in battery core fixed cell 3, prevents battery core
There is a situation where plays.
By the above-mentioned description of this invention it is found that compared with prior art, a kind of battery modules of the invention and its power
The battery core 4 of dense arrangement is separated installation, is preventing electricity by battery by the way that battery core fixed cell 3 is arranged in battery modules 2
Core 4 while play, has reached better heat dissipation effect in battery modules 2, and the service life of power battery is enable to extend.
It above are only preferred embodiment of the invention, but the design concept of the present invention is not limited to this, all benefits
It is made a non-material change to the present invention, should all be belonged to behavior that violates the scope of protection of the present invention with this design.
Claims (15)
1. a kind of battery modules, the battery modules are for installing battery core, it is characterised in that: fix including at least one set of battery core
Unit, the battery core fixed cell include side plate and baffle, and the side plate includes the first side plate and the second side plate being arranged symmetrically,
The baffle includes the first baffle and second baffle being arranged symmetrically, first side plate, the second side plate, first baffle, second
Baffle surrounds battery core accommodating chamber.
2. battery modules as described in claim 1, it is characterised in that: the battery core fixed cell further includes third baffle,
The third baffle is set in battery core accommodating chamber, and battery core accommodating chamber is divided into two chambers.
3. battery modules as described in claim 1, it is characterised in that: it is tight to be equipped with first between the third baffle and side plate
Gu mechanism, first retention mechanism is for third baffle to be fixed between the first side plate, the second side plate.
4. battery modules as described in claim 1, it is characterised in that: the battery core fixed cell further includes press strip, described
Press strip be set to battery core accommodating chamber at the top of, for fixing position of the battery core in battery core accommodating chamber.
5. battery modules as claimed in claim 4, it is characterised in that: it further include the second retention mechanism, second fastening machine
Press strip both ends are solidly connected with baffle by structure respectively.
6. battery modules as described in claim 1, it is characterised in that: the side plate is made from a material that be thermally conductive with baffle.
7. a kind of power battery, including battery case and multiple battery cores, it is characterised in that: further include multiple such as claim 1~6 times
Battery modules described in one, the battery modules are arranged in battery case, and the battery core is set in battery modules, institute
The battery modules stated are for separating installation battery core.
8. power battery as claimed in claim 7, it is characterised in that: further include aluminium row, the aluminium row is set to battery modules
Top enables adjacent battery modules carry out serial or parallel connection for connecting battery core positive and negative anodes.
9. power battery as claimed in claim 7, it is characterised in that: further include BMS control device, the BMS controls dress
It is arranged in the side of battery modules, for managing the running of battery modules.
10. power battery as claimed in claim 7, it is characterised in that: further include cooling system, the cooling system is set to
Between battery modules and battery case, for radiating to battery modules.
11. power battery as claimed in claim 10, it is characterised in that: the cooling system include top cooling system,
Lower part cooling system, the top cooling system are used to radiate to battery modules top, the lower part cooling system
For radiating to battery modules bottom and side.
12. power battery as claimed in claim 11, it is characterised in that: the top cooling system includes radiator, wind
Fan, the radiator are set at the top of battery modules, and the fan is set at the top of radiator.
13. power battery as claimed in claim 11, it is characterised in that: the lower part cooling system includes liquid cooling plate and liquid
Cold pipe, the liquid cooling plate are equipped with coolant liquid circulation line, and the coolant liquid circulation line is connected with liquid cooling pipe.
14. power battery as claimed in claim 13, it is characterised in that: the liquid cooling plate is set to the bottom of battery modules.
15. power battery as claimed in claim 13, it is characterised in that: the liquid cooling pipe is set to the side of battery modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222148.4A CN109360912A (en) | 2018-10-19 | 2018-10-19 | Battery module and power battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222148.4A CN109360912A (en) | 2018-10-19 | 2018-10-19 | Battery module and power battery thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109360912A true CN109360912A (en) | 2019-02-19 |
Family
ID=65345992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811222148.4A Pending CN109360912A (en) | 2018-10-19 | 2018-10-19 | Battery module and power battery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109360912A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670636A (en) * | 2021-01-19 | 2021-04-16 | 河南利威新能源科技有限公司 | Battery module and battery PACK |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010015955A (en) * | 2008-07-07 | 2010-01-21 | Toyota Motor Corp | Power storage device |
| CN106505169A (en) * | 2016-12-27 | 2017-03-15 | 宁德时代新能源科技股份有限公司 | Battery module shell structure and battery module |
| CN206332065U (en) * | 2017-01-13 | 2017-07-14 | 杭州天丰电源股份有限公司 | A kind of lithium battery group of lithium battery support and the application support |
| CN206742329U (en) * | 2017-05-18 | 2017-12-12 | 东莞市沃泰通新能源有限公司 | Battery case |
| CN207474516U (en) * | 2017-09-12 | 2018-06-08 | 深圳市沃特玛电池有限公司 | A kind of battery pack heat exchange structure |
| CN207587813U (en) * | 2017-12-25 | 2018-07-06 | 北京世纪东方通讯设备有限公司 | A kind of battery for row tail safety device |
-
2018
- 2018-10-19 CN CN201811222148.4A patent/CN109360912A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010015955A (en) * | 2008-07-07 | 2010-01-21 | Toyota Motor Corp | Power storage device |
| CN106505169A (en) * | 2016-12-27 | 2017-03-15 | 宁德时代新能源科技股份有限公司 | Battery module shell structure and battery module |
| CN206332065U (en) * | 2017-01-13 | 2017-07-14 | 杭州天丰电源股份有限公司 | A kind of lithium battery group of lithium battery support and the application support |
| CN206742329U (en) * | 2017-05-18 | 2017-12-12 | 东莞市沃泰通新能源有限公司 | Battery case |
| CN207474516U (en) * | 2017-09-12 | 2018-06-08 | 深圳市沃特玛电池有限公司 | A kind of battery pack heat exchange structure |
| CN207587813U (en) * | 2017-12-25 | 2018-07-06 | 北京世纪东方通讯设备有限公司 | A kind of battery for row tail safety device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670636A (en) * | 2021-01-19 | 2021-04-16 | 河南利威新能源科技有限公司 | Battery module and battery PACK |
| CN112670636B (en) * | 2021-01-19 | 2023-06-02 | 河南利威新能源科技有限公司 | Battery module and battery PACK |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190219 |