CN210200841U - Power battery pack with combinable battery module and power automobile chassis assembly thereof - Google Patents
Power battery pack with combinable battery module and power automobile chassis assembly thereof Download PDFInfo
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- CN210200841U CN210200841U CN201921665020.5U CN201921665020U CN210200841U CN 210200841 U CN210200841 U CN 210200841U CN 201921665020 U CN201921665020 U CN 201921665020U CN 210200841 U CN210200841 U CN 210200841U
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model relates to a power battery makes the field, discloses a power battery package and power automobile chassis subassembly with can make up battery module, wherein power battery package include lower casing (100), upper casing (300) and set up can make up battery module (200) in the accommodation space that lower casing and upper casing formed, can make up battery module and include multirow parallel arrangement and interconnect's big electric core module unit (210), big electric core module unit includes a plurality of sub-electric core group (220) that link to each other; the module specifications of the sub-electric core groups in at least two rows of the combinable battery module are different from each other, so that the power battery pack is matched with the power battery pack arrangement space of the power automobile. The utility model discloses a connect the sub-electric core group each other for big electric core module unit, and adopt different module specification combinations, can be according to the actual need in assembly space, fully rationally utilize the space.
Description
Technical Field
The utility model relates to a power battery makes the field, specifically relates to power battery package and power automobile chassis subassembly with can make up battery module.
Background
The power battery pack is used as a core component for providing an energy source for the electric automobile, and the performance is important. Meanwhile, the structural arrangement inside the power battery and the arrangement mode of each component directly relate to the weight, the cost, the safety and the service life of the power battery. First, in an existing power battery pack, a plurality of battery modules are usually included, each battery module is a standard component with the same size, and if only the standard component with the same size can be used, there is no space and room for adjusting the size, which results in that the number of the battery modules is limited due to the size of the power battery pack, and space is wasted. Secondly, the quality of the heat dissipation capacity of the power battery pack in the use process also directly influences the quality of the power battery pack. In current power battery package, set up the water-cooling board through the below at battery module and realize effectively dispelling the heat. However, in the prior art, the battery module and the water cooling plate are separately arranged in the power battery pack, so that the battery module occupies a larger space and influences the heat dissipation effect, and the power battery pack is complex in assembly process and low in efficiency. In addition, the power battery pack needs to be distinguished under different temperature use environments, needs to be subjected to heat dissipation treatment under a higher temperature use environment, and needs to be subjected to heat preservation treatment under a lower temperature use environment. In prior art, battery module adopts the fixed mode of minor face, fixes on the lower casing of power battery package through the stay bolt, and battery module's heat conducts away for lower casing and quick conduction through the stay bolt fast, is unfavorable for keeping warm.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem of the unified extravagant space of battery module specification that prior art exists, providing the power battery package that has the assembled battery module and power automobile chassis subassembly thereof, through connecting the sub-electric core group each other for big electric core module unit, can link to each other the sub-electric core group that size and specification are different according to the actual need in assembly space to fully rationally utilize the space.
In order to achieve the above object, the present invention provides a power battery pack with a combinable battery module, including a lower casing, an upper casing, and a combinable battery module disposed in a receiving space formed by the lower casing and the upper casing, wherein the combinable battery module includes a plurality of rows of large battery cell module units disposed in parallel and connected to each other, and the large battery cell module units include a plurality of sub-battery cell groups connected to each other; the modular specifications of the sub-battery core groups in the large battery cell module units are different from each other, so that the power battery pack with the combinable battery module is matched with the power battery pack arrangement space of the power automobile.
Preferably, each large cell module unit comprises two sub-cell groups.
Preferably, a water cooling plate is integrally arranged below the large battery cell module unit.
Preferably, the periphery of the large cell module unit is provided with an end plate and a side plate which are connected with each other, and the periphery of the side plate is provided with a connecting lug which is used for being connected with the lower shell; the lower shell comprises a boundary beam, a cross beam and a bottom plate which are connected with each other, and the combined battery module is connected and fixed with the cross beam through the connecting lugs.
Preferably, the number of the connecting lugs is multiple, and the connecting lugs are continuously arranged at intervals along the length direction of the side plate.
Preferably, two adjacent lines of big battery module unit the peripheral lug of curb plate sets up in a staggered manner each other.
Preferably, the lower casing the crossbeam and the boundary beam are integrative to be set up, just the lower surface of crossbeam with the upper surface interval of bottom plate sets up to form the clearance, be equipped with the connection glue film in the clearance.
Preferably, an interval is arranged between the sub-electric core groups of each large-electric-core module unit, the intervals of the sub-electric core groups form a separation channel penetrating through the center of the power battery pack, and the wiring harness, the wire protecting box and the water cooling pipeline of the power battery pack are arranged in the separation channel.
Preferably, the battery cutting unit and the battery management system of the power battery pack are arranged at the end of the power battery pack and arranged along the width direction of the power battery pack, and the high-voltage copper bar of the power battery pack is connected with the large battery cell module units and arranged on one side of the large battery cell module units.
The utility model discloses the second aspect provides a power automobile chassis subassembly, be in including whole vehicle chassis and setting power battery package on the whole vehicle chassis, power battery package is as above power battery package with can make up the battery module.
Through the technical scheme, the utility model discloses a connect the sub-electric core group each other for big electric core module unit, can link to each other the sub-electric core group that size and specification are different according to the actual need in assembly space to make full rational use of space.
Drawings
Fig. 1 is a schematic view of an overall assembly structure of an embodiment of a power battery pack according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
fig. 3 is an assembly exploded view of a large cell module unit of the integrated water cooling plate of the present invention;
fig. 4 is a schematic structural view of the lower housing of the present invention;
fig. 5 is a schematic view of the connection structure between the lower case and the battery module according to the present invention;
fig. 6 is a chassis assembly with a power battery pack for a power vehicle according to the present invention.
Description of the reference numerals
100 lower housing 110 edge beam 120 cross beam 130 bottom plate 140 gap 150 connecting glue layer 200 combinable battery module 201 end plate 202 side plate 203 lug 204 flexible circuit board 205 bus 206 upper cover 210 large cell module unit 220 sub cell group 230 channel 231 wire harness 232 wire guard 233 water cooling pipeline 234 battery cut-off unit 235 battery management system 236 high voltage copper bar 240 middle piece 300 upper housing 400 water cooling plate 1000 whole vehicle chassis 2000 power battery package
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" generally refer to the inner and outer relative to the profile of the components themselves; "distal and proximal" generally refer to distance relative to the contour of the components themselves.
As shown in fig. 1 and fig. 2, the utility model provides a power battery pack with combinable battery module includes lower casing 100, combinable battery module 200 and upper casing 300 from bottom to top in proper order, and combinable battery module 200 is disposed in the accommodation space formed by lower casing 100 and upper casing 300, and combinable battery module 200 includes a plurality of rows of parallel disposed and interconnected large battery cell module units 210, and large battery cell module units 210 include a plurality of sub-battery cell groups 220 connected to each other; the module specifications of at least two rows of the sub-electric core groups 220 in the large-electric-core module unit 210 in the combinable battery module 200 are different from each other, so that the power battery pack with the combinable battery module is matched with the power battery pack arrangement space of the power automobile. That is to say, the utility model discloses a connect sub electric core group 220 each other for big electric core module unit 210, and adopt the different sub electric core group of module specification in the big electric core module unit of multirow, can link to each other the different sub electric core group 220 of module specification according to the actual need in assembly space, form different size combination so that fully rationally utilize the space.
Specifically, in order to meet the requirements of different spaces and facilitate the combination of the large cell module units 210, the sizes of at least two rows of the sub-electric core groups 220 in the large cell module units 210 in the combinable battery module 200 are different from each other. In the embodiment shown in fig. 1 and 2, the number of the sub-electric core groups 220 is two. That is to say, each large cell module unit 210 is formed by combining and connecting two sub-cell groups 220, and then a plurality of large cell module units 210 are arranged in parallel into a plurality of rows, so as to be combined into a combined battery module 200, and then the combined battery module 200 is fixed in the lower casing 100 to form a power battery pack. In the embodiment shown in fig. 1 and 2, a total of six rows of large cell module units 210 are provided, and obviously, the size and specification of two rows of large cell module units and the other four rows of large cell module units are different, and the former is smaller than the latter in transverse dimension. By adopting the combination of the sub-electric core groups with the non-standard sizes, the reasonable utilization of space is realized. It should be noted that the number of the sub-electric core groups 220 constituting each large electric core module unit 210 is not limited to two, and may be combined according to the actual installation space requirement and other different numbers.
As shown in fig. 2, in order to facilitate the heat dissipation of the assembled battery module 200 during the operation, a water cooling plate 400 is integrally disposed below the large cell module unit 210. For the convenience of connection, liquid inlet and outlet inserts perpendicular to the water cooling plate are welded on the water cooling plate 400. Specifically, the assembly process of the integrated water cooling plate of the assembled battery module 200 is as follows: as shown in fig. 3, since the periphery of the large cell module unit 210 includes two end plates 201 and two side plates 202 connected to each other, first, the two sub-electric core groups 220 and the intermediate member connected between the two sub-electric core groups 220 are bonded together to form the large cell module unit 210; then, the end plates 201 of the combinable battery module 200 are bonded to two ends of the large battery cell module unit 210, and the large battery cell module unit 210 and the end plates 201 are compressed by using a tool; secondly, welding the side plates 202 and the end plates 201 of the assembled battery module 200 to form a module frame; thirdly, assembling the water cooling plate 400 from the bottom of the combinable battery module 200, and bonding the bottom of the large battery cell module unit 210 and the water cooling plate 400 by using heat-conducting glue; next, adhering a water-cooled support strip 410 to the bottom of the water-cooled plate 400; subsequently, a flexible circuit board 204(FPC) and a bus bar 205 are soldered on the composable battery module 200; then, assembling the positive and negative output electrodes of the assemblable battery module and a bus bar holder (not shown in the drawings); finally, the upper cover 206 is assembled; thus, the complete assembly of the assembled battery module 200 is completed.
Known from the assembly process that foretell, the utility model provides a power battery package of this kind of can make up battery module the utility model discloses an embodiment, constitute be equipped with the interval between two sub-electric core groups 220 of big electric core module unit 210, a plurality of sub-electric core group 220 the interval constitutes one and runs through in power battery package center separates the way 230, for the convenience of arranging and save space, power battery package's pencil 231, protect line box 232 and water-cooling pipeline 233 set up separate in the way 230, and pencil 231 is the low pressure pencil usually. In addition, the battery cut-off unit 234 and the battery management system 235 of the power battery pack are arranged at the end of the power battery pack and arranged along the width direction of the power battery pack, in this embodiment, the battery cut-off unit 234 and the battery management system 235 of the power battery pack are respectively arranged at the left side and the right side of the front end of the power battery pack, the high-voltage copper bar 236 of the power battery pack is connected with a plurality of the large battery cell module units 210 and arranged at one side of the large battery cell module units 210, and in this embodiment, the high-voltage copper bar 236 of the power battery pack is arranged at the outer side of the large battery cell module units 210.
In the embodiment shown in fig. 1 in combination with fig. 2, in order to facilitate the arrangement and make the overall structure of the assembled battery module 200 more compact, the two-part sub-electric core groups 220 are combined through the intermediate member 240 to form the large electric core module unit 210. And the intermediate member 240 may be disposed at the streets 230. The whole cuboid structure that is of middleware 230, the latter half has water-cooling board plug-in components via hole, and the first half has the water-cooling pipeline mounting groove, has line protecting box installation draw-in groove etc. (not shown in the figure) on the lateral wall.
According to the above, the present invention provides a power battery pack, which is formed by connecting a sub-battery cell set 220 into a large battery cell module unit 210, connecting and combining a plurality of parallel arrangements of the large battery cell module unit 210 into a combined battery module 200, and simultaneously, integrally forming a water cooling plate 400 below the large battery cell module unit 210. The structure that big electric core module unit 210 and water-cooling board 400 set up as an organic whole has decided that this power battery package's assembly process has also obtained simplifying to a certain extent. For the power battery pack that current battery module and water-cooling board components of a whole that can function independently set up, the module assembly needs four main steps at least, promptly: the lower shell is cleaned and assembled with the water cooling plate, the heat conducting glue coating and assembling module, a dust-free chamber and glue applying equipment are also needed in the process of coating the heat conducting glue, and obviously, the assembling process of the existing battery pack is complicated and the equipment investment is high and the operation requirement is high; and the utility model discloses a structure that big electric core module unit 210 and water-cooling board 400 an organic whole set up, the module assembly only needs two steps, promptly: lower casing clearance, the assembly of module integrated water-cooling board, and need not extra equipment and requirement, can practice thrift cost of labor and equipment cost.
As shown in fig. 1 and fig. 2 in combination with fig. 3 and fig. 4, as can be seen from the foregoing, the periphery of the large cell module unit 210 includes an end plate 201 and a side plate 202 connected to each other, and the periphery of the side plate 202 is provided with a connecting lug 203 for connecting with the lower casing 100. As shown in fig. 2, the lower case 100 generally includes an edge beam 110, a cross beam 120, and a bottom plate 130, which are connected to each other, and the combinable battery module 200 is fixedly connected to the cross beam 120 by the connecting lugs 203, so that the combinable battery module 200 is fixed in the lower case 100. In order to facilitate connection and uniform stress, the number of the connecting lugs 203 is multiple, and the connecting lugs 203 are continuously arranged at intervals along the length direction of the side plate 202. The size of the interval of the two adjacent lugs 203 in the length direction can be set according to the corresponding connecting position on the cross beam 120, and meanwhile, the lugs 203 on the periphery of the side plate 202 of the two adjacent rows of large cell module units 210 are arranged in a staggered manner, so that interference between the fixing positions of the large cell module units 210 and among the parts arranged in the power battery pack is avoided. The side impact strength of the assemblable battery module 200 is also improved to some extent by the connection of the assemblable battery module 200 to the lower case 100 through the sidewalls.
As shown in fig. 5, the cross member 120 and the edge member 110 of the lower case 100 are integrally provided, which has an advantage of weight reduction and easy assembly. When the assembled battery module 200 is fixedly connected to the lower case 100, the lower surface of the beam 120 and the upper surface of the bottom plate 130 are spaced, a gap 140 is formed therebetween, and a connection adhesive layer 150 is disposed in the gap 140. Particularly, the utility model discloses a lower casing 100 is the aluminium alloy tailor-welding structure, mainly forms by boundary beam 110, crossbeam 120 and bottom plate 130 welding, can realize the lightweight requirement of battery package, wherein provides the mounting point that can make up battery module 200 on the crossbeam 120 of lower casing, and the concrete tailor-welding process of casing 100 includes down: firstly, a ring of boundary beams 110 are welded, then the inner cross beam 120 is welded, and finally the bottom plate 130 is fixed at the bottom. More specifically, the cross beam 120 of the lower housing 100 and the edge beam 110 of the lower housing 100 are integrally formed, and can be processed and formed by using an aluminum profile extrusion process, and the technical scheme that the cross beam 120 and the edge beam 110 are integrally arranged in the lower housing 100 has the advantages of reducing weight and cost and being easy to assemble. In addition, since the bottom surfaces of the cross beam 120 and the side beam 110 of the lower case 100 are directly provided with a height difference, a gap 140 is left between the bottom plate 130 and the cross beam 120, and a connection glue layer 150 is arranged in the gap 140, which can not only avoid welding deformation, but also realize the heat insulation effect of the battery module. And the fixing of the base plate 130 is: firstly, the bottom plate 130 and the edge beam 110 are welded in a circle, the bottom plate 130 and the cross beam 120 are not connected by welding, but structural glue is used for replacing welding, a gap 140 is left between the bottom plate 130 and the cross beam 120 of the lower shell 100, and the bottom plate 130 and the cross beam 120 are bonded by the structural glue to form a connecting glue layer 150. The technical scheme of the structure has the following advantages: can avoid welding deformation, can realize battery module's heat preservation effect. As shown in fig. 5, after the combinable battery module 200 is fixed to the cross member 120 by the plurality of lugs 203, the combinable battery module 200 is connected to the lower case 100 in a side plate fixing manner, and heat generated during the operation of the combinable battery module 200 can be transmitted to the cross member 120 and removed only directly through the lugs 203, as shown by the direction of arrows in fig. 5. Since the outer surface of the assembled battery module 200 does not directly contact the edge beam 110, a gap 140 is also left between the cross beam 120 and the bottom plate 130, and the connection adhesive layer 150 is disposed in the gap 140. Compare with the structure of battery module direct through microscler bolt fastening on bottom plate 130 among the prior art, the utility model discloses can make up the produced heat of battery module 200 no matter be at the terminal surface or all adopt in the bottom surface be with the mode of casing non-direct contact down, with battery module snap-on under among the prior art casing and directly through the radiating transmission route contrast of casing down, obviously have the advantage of certain heat preservation effect.
As shown in fig. 6, the utility model also provides a power automobile chassis assembly, be in including whole vehicle chassis 1000 and setting power battery package 2000 on the whole vehicle chassis 1000, power battery package 2000 is as above power battery package 200 that has the assembled battery module. Particularly, the utility model provides a such power automobile chassis subassembly is big electric core module unit and with the mode that a plurality of big electric core module unit connection set up through sub-electric core group built-up connection, can realize putting in order car platform ization and battery package platform ization. In the prior art, a plurality of vehicle enterprises are refitted electric vehicles on the basis of original fuel vehicles, and the arrangement space of a battery pack is generally wide and narrow in the front due to the limitation of rear wheels of a chassis and the like in the fuel vehicles. As shown in fig. 6; because the restriction of traditional module size leads to two module spaces arranged in the battery envelope not enough, arranges a module and space is wasted, so, the utility model discloses a big electric core module unit technical scheme can be according to whole car space battery envelope, freely sets up the length of battery module, for example can adopt the module specification to divide into 1P24S, 1P20S, 1P18S, 1P16S several kinds or even more in same power battery package to can cooperate the use in the battery package; and this battery module middleware sets up, can guarantee that battery package low pressure pencil and water pipe arrange in the intermediate position, more save battery package space safely like this.
The utility model provides a power battery pack with a combinable battery module, which can arrange large battery cell module units with different module specifications in the same combinable battery module by adopting the sub-battery cell combination as a large battery cell module unit, thereby being convenient for battery pack assembly and space utilization, and reducing labor cost and equipment investment; due to the integration of the battery module and the water cooling plate, the assembly of parts is optimized, and the assembly process of the battery pack is simplified; the battery module is fixedly installed with the side plate of the lower shell, and the side plate is of an integral structure, so that the side collision strength of the battery pack can be improved in the arrangement of the battery pack; in addition, the arrangement of the low-voltage wire harness, the wire protecting box and the water cooling pipeline in the middle of the battery pack makes full use of the space in the battery pack, so that the energy density can be improved; and the internal battery module, the thermal management assembly, the electrical assembly and the like are optimally arranged and assembled, the grouping efficiency of the whole battery pack is improved, and the battery pack is safer in the whole vehicle collision process through the arrangement scheme. Furthermore, the utility model discloses a power automobile chassis subassembly realizes the platform ization of battery package and module and uses.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The utility model discloses an in the technical conception scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, for example, can change the module specification that makes up into the sub-electric core group of big electric core module unit according to the needs of practical application environment, realizes different compound mode. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. The power battery pack with the combinable battery module comprises a lower shell (100), an upper shell (300) and the combinable battery module (200) arranged in a containing space formed by the lower shell (100) and the upper shell (300), and is characterized in that the combinable battery module (200) comprises a plurality of rows of large battery cell module units (210) which are arranged in parallel and connected with each other, and each large battery cell module unit (210) comprises a plurality of sub-battery cell groups (220) connected with each other;
the modular specifications of the sub-battery core groups (220) in the large battery cell module units (210) are different from each other at least in two rows in the combinable battery module (200), so that the power battery pack with the combinable battery module is matched with the power battery pack arrangement space of the power automobile.
2. The power battery pack with the combinable battery modules as claimed in claim 1, wherein each large cell module unit (210) comprises two sub-cell groups (220).
3. The power battery pack with the combinable battery modules as claimed in claim 1, wherein a water-cooling plate (400) is integrally arranged below the large cell module unit (210).
4. The power battery pack with the combinable battery modules as claimed in claim 1, wherein the periphery of the large cell module unit (210) is provided with an end plate (201) and a side plate (202) which are connected with each other, and the periphery of the side plate (202) is provided with a connecting lug (203) for connecting with the lower shell (100);
the lower shell (100) comprises an edge beam (110), a cross beam (120) and a bottom plate (130) which are connected with each other, and the combinable battery module (200) is connected and fixed with the cross beam (120) through the connecting lug (203).
5. The power battery pack with the combinable battery modules as recited in claim 4, wherein the connecting lugs (203) are provided in plural numbers, and the plural connecting lugs (203) are provided in series at intervals along the length direction of the side plate (202).
6. The power battery pack with the combinable battery modules as claimed in claim 4, wherein the lugs (203) on the periphery of the side plates (202) of two adjacent rows of the large cell module units (210) are staggered with each other.
7. The power battery pack with the combinable battery module according to claim 4, wherein the cross beam (120) and the edge beam (110) of the lower housing (100) are integrally arranged, and the lower surface of the cross beam (120) and the upper surface of the bottom plate (130) are arranged at an interval to form a gap (140), and a connecting glue layer (150) is arranged in the gap (140).
8. The power battery pack with the combinable battery module as claimed in claim 1, wherein a space is provided between the sub-electric core groups (220) of each large-electric-core module unit (210), the space of the plurality of sub-electric core groups (220) forms a partition channel (230) running through the center of the power battery pack, and the wiring harness (231), the wire protecting box (232) and the water cooling pipeline (233) of the power battery pack are provided in the partition channel (230).
9. The power battery pack with the combinable battery modules as recited in claim 1, wherein the battery cut-off unit (234) and the battery management system (235) of the power battery pack are arranged at the end of the power battery pack and arranged along the width direction of the power battery pack, and the high-voltage copper bar (236) of the power battery pack is connected with the plurality of large cell module units (210) and arranged at one side of the plurality of large cell module units (210).
10. A power automobile chassis assembly, comprising a whole automobile chassis (1000) and a power battery pack (2000) arranged on the whole automobile chassis (1000), characterized in that the power battery pack is the power battery pack (2000) with a combinable battery module set according to any one of claims 1-9.
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| CN201921665020.5U CN210200841U (en) | 2019-09-30 | 2019-09-30 | Power battery pack with combinable battery module and power automobile chassis assembly thereof |
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| CN201921665020.5U CN210200841U (en) | 2019-09-30 | 2019-09-30 | Power battery pack with combinable battery module and power automobile chassis assembly thereof |
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| CN112234285A (en) * | 2020-05-29 | 2021-01-15 | 蜂巢能源科技有限公司 | Power battery pack |
| CN112670649A (en) * | 2020-11-16 | 2021-04-16 | 浙江零跑科技有限公司 | Power battery box lower case and connection step thereof with power battery |
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| CN113594597A (en) * | 2021-07-14 | 2021-11-02 | 安徽众兴模具有限公司 | Battery casing with launch protection architecture |
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| CN114590138A (en) * | 2022-03-08 | 2022-06-07 | 法法汽车(中国)有限公司 | Electric vehicle battery pack system |
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