CN110021719B - Battery unit, battery module and car - Google Patents

Battery unit, battery module and car Download PDF

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Publication number
CN110021719B
CN110021719B CN201810476313.2A CN201810476313A CN110021719B CN 110021719 B CN110021719 B CN 110021719B CN 201810476313 A CN201810476313 A CN 201810476313A CN 110021719 B CN110021719 B CN 110021719B
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CN
China
Prior art keywords
pole
cover plate
utmost point
battery unit
district
Prior art date
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Active
Application number
CN201810476313.2A
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Chinese (zh)
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CN110021719A (en
Inventor
胡世超
蒋露霞
潘仪
程晗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
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BYD Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Priority to PCT/CN2019/070630 priority Critical patent/WO2019134697A1/en
Priority to TW108100720A priority patent/TWI735836B/en
Publication of CN110021719A publication Critical patent/CN110021719A/en
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Publication of CN110021719B publication Critical patent/CN110021719B/en
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    • 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147—Lids or covers
    • 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention relates to the field of batteries, and discloses a battery unit, a battery module and an automobile, wherein the battery unit comprises a shell (3), a cover plate (4), a pole (5) and a pole core, the shell (3) is provided with an opening, the cover plate (4) covers the opening, the pole core is arranged in the shell (3), the cover plate (4) comprises a cover plate body (42) and an inwards concave cavity part (41) arranged on the cover plate body (42), and the pole (5) is accommodated in the cavity part (41) and protrudes outwards relative to the cover plate body (42). Through above-mentioned technical scheme, the height of apron body promotes outwards for cavity portion, has occupied cavity portion also be exactly the space near utmost point post, has increased battery unit's internal volume, allows the pole core to have bigger volume, can increase battery unit's capacity.

Description

Battery unit, battery module and car
Cross Reference to Related Applications
The application requires priority of a chinese patent application with application number 201810015504.9 filed on day 1 and 8 in 2018, a chinese patent application with application number 201810016060.0 filed on day 1 and 8 in 2018, a chinese patent application with application number 201810015506.8 filed on day 1 and 8 in 2018, a chinese patent application with application number 201810016052.6 filed on day 8 in 2018, a chinese patent application with application number 201810015502.X filed on day 1 and 8 in 2018, a chinese patent application with application number 201810016520.X filed on day 1 and 8 in 2018, a chinese patent application with application number 201810015503.4 filed on day 1 and 8 in 2018, and a chinese patent application with application number 201810016056.4 filed on day 1 and 8 in 2018.
Technical Field
The invention relates to the field of batteries, in particular to a battery unit, a battery module and an automobile.
Background
With the development of science and technology, various electronic devices, electric tools, etc. are widely used, such as mobile phones, electric vehicles, etc., as core components, the performance of the battery has an important influence on the overall performance and the use experience, and particularly, the capacity of the battery determines the overall endurance and is an important concern of users.
The battery comprises a shell and a pole core arranged in the shell, the volume of a battery unit determines the volume of the pole core to a certain extent, and is an important determining factor of battery capacity.
Disclosure of Invention
It is an object of the present invention to provide a battery unit to increase the battery capacity in the presence of space limitations.
In order to achieve the above object, the present invention provides a battery cell, wherein the battery cell includes a housing having an opening, a cover plate that covers the opening, a pole, and a pole core disposed in the housing, the cover plate includes a cover plate body and an inwardly recessed cavity portion provided on the cover plate body, and the pole is accommodated in the cavity portion.
Preferably, utmost point core is including having the utmost point core main part of dilatation end, the dilatation end be provided with utmost point post adaptation district and for the convex dilatation district in utmost point post adaptation district, utmost point post adaptation district for the dilatation district is sunken and forms utmost point post installation space, utmost point post passes concave cavity portion and orientation utmost point post adaptation district extends, utmost point post with cavity portion sets up at least partially in the utmost point post installation space, the dilatation district aligns the apron body.
Preferably, the post fitting region is surrounded by the expansion region.
Preferably, the cavity portion comprises a tubular side wall and an annular bottom wall, and the pole extends into the tubular side wall and passes through the annular bottom wall.
Preferably, a filler is disposed between the pole and the tubular sidewall.
Preferably, the apron includes that two intervals set up concave cavity portion, the dilatation end is provided with the utmost point post adaptation district that two intervals set up, two concave cavity portion respectively with two utmost point post adaptation district cooperation.
Preferably, the cover plate comprises two adjacent concave cavity parts, and the two concave cavity parts are arranged in the same pole fitting area.
Preferably, the pole core comprises a pole tab connected to the pole fitting region.
Preferably, the pole core comprises a pole lug connected to the expansion region and extending to the pole fitting region.
Preferably, the tab is integrally formed with the core body.
Preferably, the tab is attached to the expansion area.
Preferably, the pole is connected to the tab.
Preferably, an inner lead-out piece connected with the pole is arranged on the inner side of the cavity part, and the pole is connected to the pole lug through the inner lead-out piece.
Preferably, the pole protrudes outwardly relative to the cover plate body.
In addition, the invention provides a battery module, wherein the battery module comprises the battery unit.
In addition, the invention also provides an automobile, wherein the automobile comprises at least one battery module.
Through above-mentioned technical scheme, the height of apron body promotes outwards for cavity portion, has occupied cavity portion also be exactly the space near utmost point post, has increased battery unit's internal volume, allows the pole core to have bigger volume, can increase battery unit's capacity.
Drawings
Fig. 1 is a perspective view of a battery unit according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a battery cell according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a perspective view of a pole piece according to an embodiment of the present invention;
fig. 5 is a perspective view of a pole piece according to an embodiment of the present invention.
Description of the reference numerals
1 pole core main body and 2 pole lugs
3 case 4 cover plate
5 pole 6 internal lead-out sheet
11 capacity expansion end
111 expansion region 112 pole adaptation region
41 cavity part 42 cover plate body
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The invention provides a battery unit, wherein the battery unit comprises a shell 3, a cover plate 4, a pole 5 and a pole core, the shell 3 is provided with an opening, the cover plate 4 covers the opening, the pole core is arranged in the shell 3, the cover plate 4 comprises a cover plate body 42 and an inwards concave cavity part 41 arranged on the cover plate body 42, and the pole 5 is accommodated in the cavity part 41.
As shown in fig. 1 and 2, the cover body 42 is formed in a substantially flat plate shape, the cavity 41 is recessed with respect to the cover body 42, and the pole 5 is accommodated in the cavity 41 and can be connected to the electric equipment. In the prior art, the cover plate 4 is approximately flat, and the pole 5 passes through the cover plate 4 and extends to the outside, compared with the prior art, the invention equivalently improves the overall height of the cover plate 4, so that the volume of a cavity formed by the shell 3 and the cover plate 4 is increased, the volume of the pole core is conveniently increased, and the capacity expansion is realized.
Specifically, the utmost point core is including utmost point core main part 1 that has expansion end 11, expansion end 11 is provided with utmost point post adaptation district 112 and for utmost point post adaptation district 112 convex dilatation district 111, utmost point post adaptation district 112 for dilatation district 111 is sunken and is formed utmost point post installation space, utmost point post 5 passes concave cavity portion 41 and towards utmost point post adaptation district 112 extends, utmost point post 5 with concave cavity portion 41 sets up at least partially in the utmost point post installation space, expansion district 111 aligns apron body 42.
The expansion end 11 is covered by the cover plate 4, the area occupied by the pole 5 and the cavity 41 of the expansion end 11 is a pole adaptation area 112, the area not occupied by the pole 5 and the cavity 41 protrudes towards the cover plate 4 to form an expansion area 111, the volume of the pole core main body 1 is increased, and expansion is achieved. The pole fitting region 112 is recessed with respect to the expanded region to form a pole mounting space in which the pole 5 and the cavity 41 are at least partially accommodated.
In addition, the pole fitting region 112 is surrounded by the expansion region 111. In the pole core shown in fig. 4 and 5, the pole fitting region 112 is provided between the two enlarged regions 111, and the substantially cylindrical cavity portion 41 can be accommodated in the pole mounting space formed substantially in a hexahedral shape between the two enlarged regions 111. In order to further increase the volume of the pole core body 1, the pole mounting space may be formed in a substantially cylindrical shape, i.e. the pole fitting region 112 is surrounded by the enlarged region 111, enclosing a recess with a circular cross-section to accommodate the cylindrical cavity 41.
Further, the cavity portion 41 includes a tubular side wall and an annular bottom wall, and the pole 5 extends into the tubular side wall and passes through the annular bottom wall. As shown in fig. 2 and 3, the pocket portion 41 is formed by a tubular side wall and an annular bottom wall provided with a through hole to allow the pole 5 to pass therethrough. The shape of the cavity 41 corresponds to the cylindrical shape of the post 5, and the volume occupied by the cavity 41 can be sufficiently reduced, but the post 5 may be formed in other shapes, for example, a hexagonal prism shape, a rectangular parallelepiped shape, or the like.
In addition, a filler is arranged between the pole 5 and the tubular side wall. The pole 5 is spaced from the tubular side wall by a filler, which may be an insulating material, and which may be elastic, cushioning the pole 5 from the tubular side wall.
According to an embodiment of the present invention, the cover plate 4 includes two spaced apart concave portions 41, the expansion end 11 is provided with two spaced apart pole fitting areas 112, and the two concave portions 41 are respectively engaged with the two pole fitting areas 112. As shown in fig. 2, 3, 4 and 5, the expansion end 11 is provided with two pole fitting areas 112, two poles 5 can be respectively installed, the corresponding cover plate 4 is provided with two cavity parts 41, and the two cavity parts 41 are respectively arranged at the two pole fitting areas 112.
According to an embodiment of the present invention, the cover plate 4 includes two adjacent concave portions 41, and the two concave portions 41 are disposed in the same pole fitting area 112. When the distance between the two cavity parts 41 is short, the pole core main body 1 can be provided with a pole fitting area 112, and a pole mounting space formed by the depression of the pole fitting area 112 can simultaneously accommodate the two cavity parts 41.
In addition, the pole core comprises a pole lug 2 connected to the pole fitting region 112. As shown in fig. 4, the tab 2 is attached to the post fitting area 112 and may be electrically connected to the post 5.
Alternatively, the pole core comprises a tab 2 connected to the expansion region 111 and extending to the pole fitting region 112. As shown in fig. 5, the tab 2 is connected to the expansion region 111 and may extend to the post fitting region 112 for electrical connection with the corresponding post 5.
Preferably, the tab 2 is integrally formed with the core body 1. The tab 2 and the pole core main body 1 are integrally formed from a material for making the pole core, and the tab 2 includes two tabs as a positive electrode and a negative electrode. Of course, in other embodiments, the tab 2 may be additionally processed and connected to the core body 1.
As described above, the pole 5 is connected to the tab 2. The pole 5 and the tab 2 may be directly connected or may be connected by other structures.
Preferably, an inner lead-out piece 6 connected with the pole 5 is arranged at the inner side of the cavity part 41, and the pole 5 is connected with the pole ear 2 through the inner lead-out piece 6. As shown in fig. 3, the inner side of the cavity portion 41 is the side facing the pole core, the cavity portion 41 is disposed in the pole fitting region 112 (not labeled in fig. 3), the inner lead 6 can fit on the annular bottom wall of the cavity portion 41, and the pole 5 is connected to the inner lead 6 and electrically connected to the pole tab 2 located in the pole fitting region 112 through the inner lead 6.
In addition, the pole 5 protrudes outward relative to the cover plate body 42. As shown in fig. 1, the upper end of the pole 5 protrudes outward relative to the cover body 42, i.e., the pole 5 is higher than the outer surface of the cover body 42, and the external electric device can be more conveniently connected to the pole 5.
In addition, the invention also provides a battery module, wherein the battery module comprises the battery unit. The battery module may include a plurality of the battery cells, and the plurality of battery cells may be connected in series or in parallel to supply power.
In addition, the invention also provides an automobile, wherein the automobile comprises at least one battery module.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims (14)

1. A battery unit, characterized in that the battery unit comprises a housing (3), a cover plate (4), a terminal post (5), and a terminal core, the housing (3) has an opening, the cover plate (4) covers the opening, the terminal core is disposed within the housing (3), the cover plate (4) comprises a cover plate body (42) and an inwardly recessed cavity portion (41) provided on the cover plate body (42), the terminal post (5) is accommodated in the cavity portion (41),
wherein, utmost point core is including utmost point core main part (1) that has dilatation end (11), dilatation end (11) are provided with utmost point post adaptation district (112) and for utmost point post adaptation district (112) convex dilatation district (111), utmost point post adaptation district (112) for dilatation district (111) is sunken and form utmost point post installation space, utmost point post (5) pass cavity portion (41) and orientation utmost point post adaptation district (112) extend, utmost point post (5) with cavity portion (41) sets up partially at least in utmost point post installation space, dilatation district (111) align apron body (42), utmost point post adaptation district (112) pass through dilatation district (111) encircles.
2. The battery unit according to claim 1, characterized in that the cavity portion (41) comprises a tubular side wall and an annular bottom wall, the pole (5) protruding into the tubular side wall and through the annular bottom wall.
3. A battery cell according to claim 2, characterized in that a filler is arranged between the pole (5) and the tubular side wall.
4. The battery unit according to claim 1, wherein the cover plate (4) comprises two spaced-apart cavity portions (41), the expansion end (11) is provided with two spaced-apart pole fitting areas (112), and the two cavity portions (41) are respectively matched with the two pole fitting areas (112).
5. The battery unit according to claim 1, characterized in that the cover plate (4) comprises two adjacently arranged cavity portions (41), both cavity portions (41) being arranged at the same pole fitting region (112).
6. The battery cell according to claim 1, characterized in that the pole core comprises a pole lug (2) connected to the pole fitting region (112).
7. The battery cell according to claim 1, characterized in that the pole core comprises a pole lug (2) connected to the expansion region (111) and extending to the pole fitting region (112).
8. The battery cell according to claim 6 or 7, characterized in that the tab (2) is integrally formed with the core body (1).
9. The battery cell according to claim 6 or 7, characterized in that the tab (2) is conformed to the expansion region (111).
10. A battery unit as claimed in claim 6 or 7, characterized in that the pole (5) is connected to the pole lug (2).
11. A battery unit as claimed in claim 10, characterised in that the cavity (41) is provided on its inside with an inner lead-out tab (6) to which the pole (5) is connected, the pole (5) being connected to the pole lug (2) by means of the inner lead-out tab (6).
12. The battery cell according to claim 1, characterized in that the pole (5) protrudes outwards with respect to the cover plate body (42).
13. A battery module characterized by comprising the battery cell according to any one of claims 1 to 12.
14. An automobile, characterized in that the automobile comprises at least one battery module according to claim 13.
CN201810476313.2A 2018-01-08 2018-05-17 Battery unit, battery module and car Active CN110021719B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/070630 WO2019134697A1 (en) 2018-01-08 2019-01-07 Battery unit, battery module, and vehicle
TW108100720A TWI735836B (en) 2018-01-08 2019-01-08 Battery unit, battery module and car

Applications Claiming Priority (16)

Application Number Priority Date Filing Date Title
CN201810015504 2018-01-08
CN201810015502 2018-01-08
CN2018100155034 2018-01-08
CN201810016060 2018-01-08
CN2018100155049 2018-01-08
CN2018100160600 2018-01-08
CN201810016056 2018-01-08
CN201810016052 2018-01-08
CN2018100160564 2018-01-08
CN2018100155068 2018-01-08
CN201810016520X 2018-01-08
CN201810015503 2018-01-08
CN2018100160526 2018-01-08
CN201810015506 2018-01-08
CN201810015502X 2018-01-08
CN201810016520 2018-01-08

Publications (2)

Publication Number Publication Date
CN110021719A CN110021719A (en) 2019-07-16
CN110021719B true CN110021719B (en) 2020-08-25

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CN201810476325.5A Active CN110021778B (en) 2018-01-08 2018-05-17 Pole core, battery unit, battery module and car
CN201810475762.5A Active CN110021776B (en) 2018-01-08 2018-05-17 Battery unit, battery module and car
CN201810476313.2A Active CN110021719B (en) 2018-01-08 2018-05-17 Battery unit, battery module and car
CN201810476315.1A Active CN110021716B (en) 2018-01-08 2018-05-17 Battery unit, battery module and car
CN201810476328.9A Pending CN110021779A (en) 2018-01-08 2018-05-17 Battery unit, battery modules and automobile
CN201810474862.6A Active CN110021774B (en) 2018-01-08 2018-05-17 Pole core, battery unit, battery module and car
CN201810476322.1A Active CN110021777B (en) 2018-01-08 2018-05-17 Pole core, battery unit, battery module and car
CN201810474865.XA Active CN110021721B (en) 2018-01-08 2018-05-17 Battery module and car
CN201810475688.7A Active CN110021775B (en) 2018-01-08 2018-05-17 Pole core, battery unit, battery module and car

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CN201810476328.9A Pending CN110021779A (en) 2018-01-08 2018-05-17 Battery unit, battery modules and automobile
CN201810474862.6A Active CN110021774B (en) 2018-01-08 2018-05-17 Pole core, battery unit, battery module and car
CN201810476322.1A Active CN110021777B (en) 2018-01-08 2018-05-17 Pole core, battery unit, battery module and car
CN201810474865.XA Active CN110021721B (en) 2018-01-08 2018-05-17 Battery module and car
CN201810475688.7A Active CN110021775B (en) 2018-01-08 2018-05-17 Pole core, battery unit, battery module and car

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TW (5) TWI703755B (en)

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