CN210379216U - Battery module and battery pack - Google Patents
Battery module and battery pack Download PDFInfo
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- CN210379216U CN210379216U CN201920610671.8U CN201920610671U CN210379216U CN 210379216 U CN210379216 U CN 210379216U CN 201920610671 U CN201920610671 U CN 201920610671U CN 210379216 U CN210379216 U CN 210379216U
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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
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Abstract
The application discloses battery module and battery package, its battery anchor clamps and the series connection piece to battery module especially battery module carry out ingenious institutional transformation, and make the free tip position of every battery all have the exhaust clearance of certain size, each exhaust clearance switches on each other through the channel of battery anchor clamps from the area, and set up at the anchor clamps lateral part with the communicating air vent in exhaust clearance, when arbitrary battery monomer takes place the thermal runaway and releases dangerous gas in the module, this dangerous gas can both pass through exhaust clearance and air vent discharge module outside, the security improves greatly.
Description
Technical Field
The application relates to the field of batteries, in particular to a battery module and a battery pack.
Background
With subsidy grade withdrawal and the implementation of new national standards, new energy vehicle enterprises require that the energy density of a lithium ion battery system is improved and the requirement on the safety performance of the system is higher and higher.
In order to improve the energy density, the core of the battery system currently uses a ternary lithium battery, and the increase of the nickel content in the ternary lithium battery can improve the energy density but reduce the safety performance of the battery. If the batteries are improperly used after being assembled into a group, the batteries are likely to be out of thermal control if short circuit, overheating, external force impact and the like are encountered.
During thermal runaway, the internal substances of the battery undergo a large number of exothermic chemical reactions, which generally produce a large amount of combustible gas, and finally the temperature of the battery rises and the internal pressure increases. When the internal pressure of the battery increases to a certain value, an explosion-proof valve disposed at the end of the battery opens, releasing combustible gas. Because the batteries in the battery pack are densely arranged, the combustible gas released by the thermal runaway battery is filled around other normal batteries, when the gas concentration and the temperature reach the combustion threshold value, the combustible gas can be combusted or even exploded, and the thermal runaway of other normal batteries can be caused by the huge heat released by combustion, so that the thermal runaway diffusion is finally caused.
Experiments show that a certain time interval is provided between the opening of the thermal runaway explosion-proof valve of the battery and the occurrence of fire and explosion. Therefore, how to collect and discharge the flammable gas when the battery is in thermal runaway becomes one of the difficulties.
Disclosure of Invention
The purpose of the application is: to the above problem, a battery module and a battery pack of a novel structure are provided, which can discharge thermal runaway hazardous gas according to a preset passage when thermal runaway occurs in a battery.
The technical scheme of the application is as follows:
a battery module, comprising:
a plurality of single batteries are arranged in the battery box,
a battery holder for supporting the battery cell, and
the series connection piece and the parallel connection network are electrically connected with the battery monomer;
the battery clamp is vertically provided with a plurality of battery inserting holes in a through mode, a circle of annular inner flanges protruding inwards in the radial direction are integrally arranged on the hole walls of the battery inserting holes, the annular inner flanges divide the battery inserting holes into upper hole sections and lower hole sections which are located on two axial sides of the battery inserting holes, channels which are recessed downwards from the upper end face of the battery clamp and radially communicate the upper hole sections are formed between the upper hole sections of any two adjacent battery inserting holes, each serial piece comprises a circular bottom piece with a lower protrusion and a plurality of elastic claws which are integrally connected to the outer edge of the circular bottom piece and are arranged around the circular bottom piece at intervals, the serial pieces are embedded inside the upper hole sections and vertically abutted against the annular inner flanges, and the lower protrusions downwards penetrate through the central holes of the annular inner flanges and extend into the lower hole sections, the parallel net is embedded in the channel and the upper hole section and is in conductive contact with the circular base sheet, the battery monomers are uniformly distributed on the upper side and the lower side of the battery clamp, the positive end of the lower battery monomer is inserted into the lower hole section and is welded and fixed with the lower bulge, the negative end of the upper battery monomer is inserted into the upper hole section and is circumferentially surrounded by the plurality of elastic claws on the serial sheet, and the elastic claws are radially clamped between the battery monomers and the hole wall of the upper hole section;
the battery clamp comprises an upper hole section, a plurality of positioning bosses which are radially inwards protruded and are arranged at intervals along the circumferential direction, the top surfaces of the positioning bosses are higher than the bottom surface of a groove channel, each elastic claw comprises a radial claw section which radially outwards extends from the outer edge of the circular bottom sheet and an axial claw section which integrally upwards extends from the end part of the radial claw section, each elastic claw is embedded between two corresponding adjacent positioning bosses, the radial claw sections are vertically abutted with the annular inner flange, the negative end of the upper battery monomer is vertically abutted with the positioning bosses, so that the upper battery monomer is vertically separated from the circular bottom sheet to form an axial gap communicated with the groove channel, and vent holes which inwards extend to the axial gap are formed in the surface of the battery clamp.
On the basis of the technical scheme, the application also comprises the following preferable scheme:
the aperture of the central hole of the annular inner flange is larger than the diameter of the circular bottom plate, so that a radial gap communicating the positive end of the lower battery monomer with the axial gap is formed between the annular inner flange and the circular bottom plate.
The vent hole is arranged on the side end surface of the battery clamp in the horizontal direction.
The number of the vent holes is at least two, and the vent holes are respectively communicated with the axial gaps in the different battery insertion holes.
The positioning bosses and the slots are arranged in a staggered mode.
The groove bottom surface of the groove channel is arranged flush with the upper end surface of the annular inner flange.
The positioning boss is integrally connected with the annular inner flange.
And a heat insulation pad is vertically clamped between the cathode end of the upper battery monomer and the positioning boss.
The axial claw section is of a multi-section bending structure.
A battery pack, comprising:
a battery box, a battery box and a battery box,
a battery module accommodated in the battery box, and
the waterproof vent valve is arranged on the wall of the battery box;
the battery module is for adopting above-mentioned structural style, waterproof breather valve with the air vent is linked together through exhaust pipe.
The application has the advantages that:
1. this application carries out ingenious institutional transformation through battery anchor clamps and the series connection piece to battery module especially module, and make every free tip position of battery all have the exhaust clearance of certain size, each exhaust clearance switches on each other through the channel of battery anchor clamps from the area, and set up the air vent at the anchor clamps lateral part, when arbitrary battery monomer takes place thermal runaway and releases dangerous gas in the module, this dangerous gas can both pass through exhaust clearance and air vent discharge module outside, and the security improves greatly.
2. The exhaust gap and the vent hole in the battery module can be used for circulating heat dissipation gas, so that the heat dissipation performance of the module is improved.
3. The heat insulation pad clamped by the battery monomer and the positioning boss can slow down the transmission speed of the heat of the thermal runaway battery monomer to the adjacent battery monomer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery pack in an embodiment of the present application;
fig. 2 is an exploded view of a battery module according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a parallel networking architecture in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a serial slice in an embodiment of the present application;
FIG. 5 is a schematic perspective view of a battery holder according to an embodiment of the present disclosure;
FIG. 6 is a schematic plan view of a battery holder according to an embodiment of the present invention;
fig. 7 is a perspective cross-sectional view of a battery module according to an embodiment of the present application;
FIG. 8 is a plan sectional view of the partial structure of FIG. 7;
FIG. 9 is a schematic view of the assembled structure of the battery clamp, the parallel network and the serial connection piece in the embodiment of the present application;
wherein: 1-single battery, 2-battery clamp, 3-series sheet, 4-parallel network, 5-battery box, 6-waterproof vent valve, 7-exhaust pipeline and 8-heat insulation pad;
201-battery insertion holes, 201 a-upper hole section, 201 b-lower hole section, 202-channel, 203-positioning boss, 204-vent hole, 205-annular inner flange, 301-circular bottom plate, 301 a-lower bulge, 302-elastic claw, 302 a-radial claw section, 302 b-axial claw section, 401-circular gasket, 402-parallel strip, a-axial gap and b-radial gap.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.
One skilled in the relevant art will recognize, however, that one or more of the specific details can be omitted, or other methods, components, or materials can be used. In some instances, some embodiments are not described or not described in detail.
Furthermore, the technical features, aspects or characteristics described herein may be combined in any suitable manner in one or more embodiments. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Thus, any sequence in the figures and examples is for illustrative purposes only and does not imply a requirement in a certain order unless explicitly stated to require a certain order.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
Fig. 1 to 9 show a specific embodiment of the battery pack of the present application, and like a conventional battery pack, the battery pack also includes an external battery box 1 and battery modules accommodated in the battery box 1, and in order to ensure the internal and external pressure balance of the battery box 1, two waterproof and air-permeable valves 6, that is, only air-permeable and water-impermeable valves, are mounted on the wall of the battery box 1.
The structure of the battery module is the same as that of a conventional battery module, and the battery module also comprises a plurality of cylindrical lithium ion battery cells 1, a battery clamp 2 (or battery support) for supporting the battery cells 1, a series plate 3 and a parallel network 4 which are electrically connected with the battery cells 1. Referring to fig. 2, a plurality of battery insertion holes 201 are vertically arranged in a matrix in the battery holder 2. A ring of annular inner flange 205 protruding radially inward is integrally arranged on the wall of the battery insertion hole 201, and the annular inner flange 205 divides the battery insertion hole 201 into an upper hole section 201a and a lower hole section 201b located on both axial sides of the battery insertion hole (i.e., the annular inner flange 205). A channel 202 which is recessed downwards from the upper end surface of the battery clamp 2 and radially communicates the two upper hole sections 201a (namely the upper hole sections of the two adjacent battery insertion holes) is formed between the upper hole sections 201a of any two adjacent battery insertion holes. The serial plate 3 comprises a circular bottom plate 301 and a plurality of spring claws 302 integrally connected to the outer edge of the circular bottom plate 301, the spring claws 302 are arranged at intervals around the circular bottom plate 301, and the middle part of the circular bottom plate 301 is provided with a lower bulge 301a protruding downwards in the axial direction. The serial piece 3 is fitted inside the upper hole section 201a, and the serial piece 3 vertically abuts against the annular inner flange 205. The lower projection 301a extends downwardly through the central aperture of the annular inner flange 205 into the interior of the lower bore section 201 b. And the mesh 4 is embedded in the groove 202 and the upper hole section 201a and is in conductive contact with the circular bottom plate 301 of each serial plate 3. Specifically, the parallel network 4 is composed of a plurality of circular spacers 401 distributed in a matrix shape and parallel strips 402 connected between the circular spacers, wherein the circular spacers 401 are embedded in the upper hole section 201a, and the parallel strips 402 are embedded in the grooves 202. In order to improve the connection stability of the parallel connection net 4 and the circular bottom plate 301, the two can be welded and fixed. The battery single body 1 is arranged on the upper side and the lower side of the battery clamp 2, wherein the positive end of the battery single body 1 on the lower side is inserted into the lower hole section 202b and is welded and fixed with the lower bulge 301a, so that the positive end of the battery single body 1 on the lower side is electrically connected with the series connection piece 3. The negative end of the upper battery cell 1 is inserted into the upper hole section 201a and tightly surrounded by several elastic claws 302 of the serial connection piece 2, and the elastic claws 302 are radially clamped between the upper battery cell 1 and the hole wall of the upper hole section 201a, so that the conductive connection between the negative end of the upper battery cell 1 and the serial connection piece 2 is realized.
The key improvement of the embodiment is as follows: the hole wall of the upper hole section 201a is provided with a plurality of positioning bosses 203 which protrude inwards in the radial direction and are arranged at intervals along the circumferential direction, and the top surfaces of the positioning bosses 203 are higher than the groove bottom surfaces of the grooves 202. The latch 302 of the serial plate 3 includes a radial pawl section 302a extending radially outward from the outer edge of the circular base plate 301 and an axial pawl section 302b extending integrally upward from the end of the radial pawl section. Each of the elastic claws 302 is embedded between corresponding adjacent two of the positioning bosses 203, and the radial claw section 302a vertically abuts against the annular inner flange 205. The negative end of the upper battery cell 1 is vertically abutted against the positioning boss 203, so that the upper battery cell 1 and the circular bottom plate 301 are vertically spaced to form an axial gap a communicated with the channel 202 between the two. The surface of the battery holder 2 is formed with vent holes 204 extending inwardly to the aforementioned axial space a, i.e. the vent holes 204 communicate directly with the axial space a.
It can be seen that, the elastic claw 302 of the serial connection piece 3 only has the axial claw section 302b which is embraced at the periphery of the upper battery cell and is radially clamped between the upper battery cell 1 and the hole wall of the upper hole section 201a, while the radial claw section 302a is not embraced at the periphery of the battery cell. In order to improve the holding force of the snap claws 302 of the serial connection piece 3 to the battery cell 1, the axial claw sections 302b are provided in a multi-section bent structure.
Because the top surface of the positioning boss 203 is higher than the bottom surface of the groove channel 202, the vertical gaps a in any two adjacent battery insertion holes 201 are communicated with each other through the groove channel 202 between the two adjacent battery insertion holes. When a certain battery cell 1 is in thermal runaway and combustible dangerous gas is discharged from the negative electrode end of the battery cell, the dangerous gas is firstly discharged into the vertical gap a, then directly discharged from the vent hole 204 or discharged into the vertical gap a in the adjacent battery socket hole through the channel 202, and finally discharged from the vent hole 204, so that the dangerous gas is prevented from gathering together to cause combustion and explosion.
Considering that the battery cells 1 of certain models can emit combustible dangerous gas from the positive electrode end when thermal runaway occurs, the structure of the battery module is further optimized: the central hole of the annular inner flange 205 has a larger diameter than the circular bottom plate 301, so that a radial gap b communicating the positive end of the lower battery cell 1 with the axial gap a is formed between the annular inner flange 205 and the circular bottom plate 301. When a certain battery cell 1 is subjected to thermal runaway and releases combustible hazardous gas from the positive electrode end of the battery cell, the hazardous gas is discharged into the radial gap b and the vertical gap a in sequence and then discharged from the vent hole 204.
The plurality of vent holes 204 are provided, and the vent holes 204 are provided on the side end surface of the battery holder 2 in the horizontal direction, and communicate with the axial gaps a in the different battery insertion holes 201.
The positioning boss 203 is arranged in a staggered manner with respect to the channel 202, that is, the positioning boss 203 is staggered with respect to the channel and does not block the channel, so as to ensure that the dangerous gas can smoothly flow between two adjacent vertical holes a through the channel 202.
To facilitate the installation of the parallel network 4, in this embodiment, while further ensuring that the hazardous gas can flow freely between two adjacent vertical apertures a via the channel 202, the groove bottom surface of the channel 202 is arranged flush with the upper end surface of the annular inner flange 205.
The positioning boss 203 is integrally connected to an annular inner flange 205. The battery holder 2 is of an integral injection-molded construction.
In this embodiment, the heat insulating pad 8 is vertically interposed between the negative electrode end of the upper battery cell 1 and the positioning boss 203 (the upper battery cell 1 is indirectly abutted against the positioning boss 203), and the heat insulating pad 8 has a circular shape and a diameter equal to that of the battery cell 1. The insulating cushion 8 is made of low thermal conductivity (less than 0.2W/m × K), flame retardant, insulating material, such as mica, aerogel, foamed silica gel, etc. The thermal insulation mat 8 can slow down the transfer speed of the heat of the thermal runaway battery cell 1 to the axially adjacent battery cells.
In addition, in order to discharge the thermal runaway danger gas discharged from the battery module to the outside of the battery case 5, the present embodiment communicates one of the waterproof vent valves 6 with the vent hole 204 of the battery holder 2 through the vent line 7. The thermal runaway danger gas discharged from the vent 204 is discharged to the outside of the battery box through the vent line 7 and the waterproof vent valve 6 in sequence. Various auxiliary workpieces such as valves, gas sensors, exhaust fans and the like can be arranged on the exhaust pipeline 7.
The hazardous gas refers to gas discharged outside when thermal runaway of the battery cell occurs, and generally includes CO2, CO, H2, C2H4, CH4, C2H6 and C3H 6.
The above embodiments are only for illustrating the technical concepts and features of the present application, and the purpose of the embodiments is to enable people to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.
Claims (10)
1. A battery module, comprising:
a plurality of battery single cells (1),
a battery holder (2) for supporting the battery cell (1), and
the parallel connection piece (3) is electrically connected with the battery single body (1) and the parallel connection network (4);
the battery clamp (2) is vertically provided with a plurality of battery inserting holes (201) in a through mode, a circle of annular inner flange (205) protruding inwards in the radial direction is integrally arranged on the hole wall of each battery inserting hole (201), each annular inner flange (205) divides each battery inserting hole (201) into an upper hole section (201a) and a lower hole section (201b) located on two axial sides of the battery inserting hole, a channel (202) which is recessed downwards from the upper end face of each battery clamp (2) and radially communicates the two upper hole sections (201a) is formed between the upper hole sections (201a) of any two adjacent battery inserting holes, each serial sheet (3) comprises a circular bottom sheet (301) with lower protrusions (301a) and a plurality of elastic claws (302) which are integrally connected to the outer edge of the circular bottom sheet (301) and are arranged around the circular bottom sheet (301) at intervals, the series sheet (3) is embedded in the upper hole section (201a), the series sheet (3) is vertically abutted against the annular inner flange (205), the lower protrusion (301a) downwards penetrates through a central hole of the annular inner flange (205) and extends into the lower hole section (201b), the parallel network (4) is embedded in the channel (202) and the upper hole section (201a) and is in conductive contact with the circular bottom sheet (301), the battery monomers (1) are uniformly arranged on the upper side and the lower side of the battery clamp (2), the positive end of the lower battery monomer (1) is inserted into the lower hole section (201b) and is welded and fixed with the lower protrusion (301a), the negative end of the upper battery monomer (1) is inserted into the upper hole section (201a) and is circumferentially surrounded by the plurality of elastic claws (302) on the series sheet (3), the elastic claw (302) is radially clamped between the battery cell (1) and the hole wall of the upper hole section (201 a);
it is characterized in that the preparation method is characterized in that,
a plurality of positioning bosses (203) which protrude inwards in the radial direction and are arranged at intervals along the circumferential direction are arranged on the hole wall of the upper hole section (201a), the top surfaces of the positioning bosses (203) are higher than the groove bottom surface of the groove channel (202), each elastic claw (302) comprises a radial claw section (302a) which extends outwards in the radial direction from the outer edge of the circular bottom plate (301) and an axial claw section (302b) which extends upwards integrally from the end part of the radial claw section (302a), each elastic claw (302) is embedded between two corresponding adjacent positioning bosses (203), the radial claw section (302a) is vertically abutted against the annular inner flange (205), the negative end of the upper battery monomer (1) is vertically abutted against the positioning bosses (203), so that the upper battery monomer (1) and the circular bottom plate (301) are vertically spaced to form an axial gap (a) which is communicated with the groove channel (202) between the two, the surface of the battery clamp (2) is provided with vent holes (204) which extend inwards to the axial gap (a).
2. The battery module according to claim 1, wherein the central hole of the annular inner flange (205) has a larger diameter than the diameter of the circular base plate (301), so that a radial gap (b) communicating the positive end of the lower battery cell (1) and the axial gap (a) is formed between the annular inner flange (205) and the circular base plate (301).
3. The battery module according to claim 1, wherein the vent hole (204) is provided in a side end surface of the battery holder (2) in the horizontal direction.
4. The battery module according to claim 1, wherein the vent holes (204) are provided in at least two, respectively communicating with the axial gaps (a) in different ones of the cell insertion holes (201).
5. The battery module according to claim 1, wherein the positioning bosses (203) are arranged to be offset from the grooves (202).
6. The battery module according to claim 1, wherein a groove bottom surface of the groove (202) is arranged flush with an upper end surface of the annular inner flange (205).
7. The battery module according to claim 1, wherein the positioning boss (203) is integrally connected to the annular inner flange (205).
8. The battery module according to claim 1, wherein a heat insulating pad (8) is vertically sandwiched between the negative end of the upper battery cell (1) and the positioning boss (203).
9. The battery module according to claim 1, wherein the axial claw section (302b) is a multi-section bent structure.
10. A battery pack, comprising:
a battery box (5),
a battery module accommodated in the battery box, and
a waterproof vent valve (6) arranged on the wall of the battery box;
characterized in that the battery module is as set forth in any of claims 1 to 9, the waterproof vent valve (6) and the vent hole (204) are communicated through a vent line (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920610671.8U CN210379216U (en) | 2019-04-29 | 2019-04-29 | Battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920610671.8U CN210379216U (en) | 2019-04-29 | 2019-04-29 | Battery module and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210379216U true CN210379216U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920610671.8U Expired - Fee Related CN210379216U (en) | 2019-04-29 | 2019-04-29 | Battery module and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210379216U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071245A (en) * | 2019-04-29 | 2019-07-30 | 苏州安靠电源有限公司 | Battery modules and battery pack |
| AT524777A4 (en) * | 2021-08-17 | 2022-09-15 | Kreisel Electric Gmbh & Co Kg | Device with several battery modules arranged one behind the other in a joining direction |
| WO2023162841A1 (en) * | 2022-02-28 | 2023-08-31 | パナソニックＩｐマネジメント株式会社 | Battery holder and battery pack |
-
2019
- 2019-04-29 CN CN201920610671.8U patent/CN210379216U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071245A (en) * | 2019-04-29 | 2019-07-30 | 苏州安靠电源有限公司 | Battery modules and battery pack |
| CN110071245B (en) * | 2019-04-29 | 2023-12-12 | 苏州安靠电源有限公司 | Battery module and battery pack |
| AT524777A4 (en) * | 2021-08-17 | 2022-09-15 | Kreisel Electric Gmbh & Co Kg | Device with several battery modules arranged one behind the other in a joining direction |
| AT524777B1 (en) * | 2021-08-17 | 2022-09-15 | Kreisel Electric Gmbh & Co Kg | Device with several battery modules arranged one behind the other in a joining direction |
| WO2023162841A1 (en) * | 2022-02-28 | 2023-08-31 | パナソニックＩｐマネジメント株式会社 | Battery holder and battery pack |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 Termination date: 20210429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |