CN112133858B - Battery cell module, battery pack and design method of battery pack - Google Patents

Battery cell module, battery pack and design method of battery pack Download PDF

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Publication number
CN112133858B
CN112133858B CN202011052050.6A CN202011052050A CN112133858B CN 112133858 B CN112133858 B CN 112133858B CN 202011052050 A CN202011052050 A CN 202011052050A CN 112133858 B CN112133858 B CN 112133858B
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Prior art keywords
battery cell
cell module
battery
lower box
box body
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CN202011052050.6A
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CN112133858A (en
Inventor
李阳
乔延涛
卢雨龙
吴俊涛
王修远
韩文刚
吕宁
尹芳芳
孙永健
曹云飞
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FAW Group Corp
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FAW Group Corp
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Priority to CN202011052050.6A priority Critical patent/CN112133858B/en
Publication of CN112133858A publication Critical patent/CN112133858A/en
Priority to PCT/CN2021/102990 priority patent/WO2022068295A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/50Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64Constructional details of batteries specially adapted for electric vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention relates to the technical field of batteries, and particularly discloses a battery cell module, a battery pack and a design method of the battery pack, wherein the battery cell module comprises a battery cell group, the battery cell group comprises a plurality of battery cells, the plurality of battery cells are arranged in M rows and N columns, and M and N are integers more than or equal to each other; elastic media are arranged between every two adjacent electric cores along the row direction and/or the column direction; the battery cell module is characterized in that the battery cell module further comprises two end plates arranged at two opposite ends of the battery cell group, the end plates are provided with a first bulge and a second bulge at intervals, a groove for accommodating a third bulge of the side wall of a lower box body of the battery cell module is formed between the first bulge and the second bulge, the groove is arranged in such a way, when the battery cell module is installed to the lower box body, the position of the third bulge is limited by the groove, the relative position of the battery cell module and the lower box body is stable, bolts can be avoided being adopted, nuts can be used for fastening the fasteners, the cost can be effectively reduced, and the installation process can be simplified.

Description

Battery cell module, battery pack and design method of battery pack
Technical Field
The invention relates to the technical field of batteries, in particular to a battery cell module, a battery pack and a design method of the battery pack.
Background
The energy density and the safety of the battery pack affect the endurance mileage of the whole vehicle and the use safety of customers. The space in the battery pack of the electric automobile is limited, and the key point of the design of the battery pack is how to improve the space utilization rate in the battery pack on the premise of safe use. The lithium battery has the characteristics of high energy density, more stored energy, long service life, wide use temperature and the like, and is widely used in the field of electric automobiles. In the battery grouping process, the problems of structure, electrical property, safety and the like are solved.
Present technical scheme, the end plate design of electric core module have with box complex fixed orifices, pass the fixed orifices through the bolt to it is fixed with the box to make electric core module. The end plate is generally designed to be a metal piece and needs to bear the expansion force of the battery cell after charging and discharging, so that the end plate has certain rigidity. The inter-module bus bars are generally fixed by means of screws. However, the end plate of the existing battery cell module is made of metal, and needs to be isolated from the battery cell by an insulating part, and the metal end plate and the battery pack box are fixed by bolts, so that the cost is high, and the installation process is complex.
Disclosure of Invention
The invention aims to: the utility model provides a design method of electric core module, battery package and battery package to the end plate of electric core module in solving the correlation technique passes through the bolt fastening with the battery package box, and the cost is higher, the complicated problem of installation procedure.
On one hand, the invention provides an electric core module which comprises an electric core group, wherein the electric core group comprises a plurality of electric cores, the electric cores are arranged in M rows and N columns, and M and N are integers more than or equal to one; elastic media are arranged between every two adjacent electric cores along the row direction and/or the column direction;
the battery core module also comprises two end plates arranged at two opposite ends of the battery core group, a first bulge and a second bulge are arranged on the end plates at intervals, the second bulge is positioned below the first bulge, a groove is formed between the first bulge and the second bulge,
the side wall of the lower box body for containing the battery cell module is provided with a third protrusion, the third protrusion is inserted into the groove, and the third protrusion can be abutted against the bottom wall of the groove and the lower surface of the first protrusion is abutted against the upper surface of the third protrusion in the vertical direction.
As a preferred technical solution of the battery cell module, the upper surface of the second protrusion can abut against the lower surface of the third protrusion.
As a preferred technical scheme of the battery cell module, a guide inclined plane is arranged on the end plate and used for guiding the battery cell module to be inserted into the lower box body.
As the preferred technical scheme of electric core module, the electric core module still includes packing area, packing area twine in the electric core group and two the periphery of end plate.
As the preferred technical scheme of electric core module, electric core module still includes auxiliary fixtures, be equipped with the centre gripping groove on the end plate, auxiliary fixtures has two relative clamping jaws, the clamping jaw can insert two the centre gripping groove of end plate, in order to with two the end plate and the electric core group presss from both sides tightly and fills in lower box.
As the preferred technical scheme of electric core module, the end plate is made by the plastics material.
As the preferred technical scheme of electric core module, the electric core module still includes the busbar, the busbar with the anodal or the negative pole welding of electricity core.
As the preferred technical scheme of electric core module, be equipped with a plurality of in the lower box the electric core group, adjacent two the busbar welding of electric core group.
On the other hand, the invention provides a battery pack, which comprises the battery cell module in any scheme.
In another aspect, the present application provides a method for designing the battery pack, including:
s1: taking the enveloping space of the lower box body and the length, width and height of the battery cell module as design input;
s2: filling the battery cell modules to the maximum extent according to the enveloping space of the lower box body, wherein the plurality of battery cell modules are arranged along the transverse direction or the longitudinal direction;
s3: determining the expansion direction of the battery cell module according to the arrangement direction of the battery cell module, wherein the side wall of the lower box body in the expansion direction of the battery cell module is used as a supporting beam;
s4: designing a clamping structure of a supporting beam of the lower box body and an end plate of the battery cell module, and limiting the battery cell module and the lower box body in the vertical direction through the clamping structure;
s5: designing a guide structure on the end plate, wherein the guide structure can guide the cell module to be placed into the enveloping space of the lower box body;
s6: checking the structural strength of the battery pack;
s7: and checking the electrical safety of the battery pack.
The invention has the beneficial effects that:
the invention provides a battery cell module, a battery pack and a design method of the battery pack, wherein the battery cell module comprises a battery cell group, the battery cell group comprises a plurality of battery cells, the plurality of battery cells are arranged in M rows and N columns, and M and N are integers more than or equal to one; elastic media are arranged between every two adjacent electric cores along the row direction and/or the column direction; the battery core module further comprises two end plates arranged at two opposite ends of the battery core group, first protrusions and second protrusions are arranged on the end plates at intervals, the second protrusions are located below the first protrusions, grooves are formed between the first protrusions and the second protrusions, a third protrusion is arranged on the side wall of the lower box body used for containing the battery core module, the third protrusion is inserted into the grooves, and the third protrusion can be abutted against the bottom wall of the grooves and abutted against the lower surface of the first protrusion and the upper surface of the third protrusion in the vertical direction. So set up, when electric core module installs to lower box, through the bellied position of recess restriction third, can guarantee that the relative position of electric core module and lower box is stable, can avoid adopting the fastener of bolt, nut, can effectively reduce cost and simplify the installation procedure.
Drawings
Fig. 1 is a schematic structural diagram of a cell module in an embodiment of the present invention;
FIG. 2 is a first schematic structural view of an end plate according to an embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a battery cell module and a lower case in an embodiment of the present invention;
FIG. 4 is a schematic structural view of the electric core assembly according to the embodiment of the present invention;
fig. 5 is a schematic diagram of two battery cell modules installed in a lower box body in the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an auxiliary fixture clamping end plate and a plug group in the embodiment of the invention;
FIG. 7 is a second schematic structural view of an end plate according to an embodiment of the present invention;
fig. 8 is a schematic diagram of the battery cell module mounted in the lower case through the auxiliary tool in the embodiment of the present invention.
In the figure:
1. the electric core group; 11. an electric core; 2. an end plate; 21. a first protrusion; 22. a second protrusion; 23. a groove; 24. a belt groove is formed; 25. a guide slope; 26. a clamping groove; 3. packing a belt; 4. a bus bar; 5. a lower box body; 51. a third protrusion; 6. a wire harness isolation plate; 61. positioning a groove; 7. an elastic medium; 8. FPC; 9. auxiliary tools; 91. a clamping jaw; 92. a connecting rod.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1 to 5, this embodiment provides a battery cell module, where the battery cell module includes a battery cell group 1, where the battery cell group 1 includes a plurality of battery cells 11, the plurality of battery cells 11 are arranged in M rows and N columns, and M and N are integers greater than or equal to 2; an elastic medium 7 is arranged between two adjacent battery cells 11 along the row direction and/or the column direction to prevent the two adjacent battery cells 11 from being in rigid contact. Wherein the elastic medium 7 can be respectively bonded with the two electric cores 11 through glue. The elastic medium 7 can be foam or the like. The battery core group 1 is integrally square, the battery core module further comprises two end plates 2 arranged at two opposite ends of the battery core group 1, and the end plates 2 are provided with first bulges 21; the lateral wall that is used for holding lower box 5 of electricity core module is equipped with third arch 51, and first arch 21 is located the top of third arch 51, and vertical direction butt is followed to the lower surface of first arch 21 and the upper surface of third arch 51, and third arch 51 can be with the lateral wall butt of end plate 2. So set up, when electric core module installs to lower box 5, through first arch 21 and third arch 51 along vertical direction butt to through the lateral wall butt of third arch 51 and end plate 2, can guarantee that electric core module and lower box 5's relative position is stable, can avoid adopting the fastener of bolt, nut, can effectively reduce cost and simplify installation procedure. Simultaneously, when electric core module charge-discharge inflation, the lateral wall of box 5 bears the bulging force under the accessible.
Optionally, a second protrusion 22 spaced apart from the first protrusion 21 is further disposed on the end plate 2, the second protrusion 22 is located below the first protrusion 21, a groove 23 is formed between the first protrusion 21 and the second protrusion 22, the third protrusion 51 is inserted into the groove 23, and the third protrusion 51 can abut against a bottom wall of the groove 23. The third protrusion 51 and the groove 23 form a wedge-shaped positioning structure, so that the stability of the relative position between the battery cell module and the lower box 5 can be further ensured. Preferably, the upper surface of the second projection 22 can abut against the lower surface of the third projection 51. Can prevent that electric core module from charging and discharging when expanding, leading to end plate 2 drunkenness.
Optionally, a guide inclined plane 25 is arranged on the end plate 2, and the guide inclined plane 25 is used for guiding the battery cell module to be inserted into the lower box 5. As shown in fig. 2 and 3, by providing the guide inclined plane 25, the guide inclined plane 25 has a guiding function, so that the cell module is conveniently assembled to the lower box 5.
Optionally, the battery cell module further comprises a packing belt 3, and the packing belt 3 is wound around the periphery of the battery cell group 1 and the two end plates 2. The binding of the electric core group 1 is increased through the packing belt 3 so as to ensure the stability of the whole structure of the electric core group 1. Optionally, the end plate 2 is provided with a belt groove 24, and a portion of the strapping band 3 is located within the belt groove 24. So set up, can guarantee that the relative position of packing area 3 and end plate 2 and electric core group 1 is stable, can prevent 3 position changes in packing area. Further preferably, the number of the packing belts 3 is two, and the two packing belts 3 are arranged at intervals in the vertical direction.
As one of them alternative, still can need not to set up packing area 3, as shown in fig. 6 to 8, the electric core module still includes auxiliary fixtures 9, is equipped with centre gripping groove 26 on the end plate 2, and auxiliary fixtures 9 has two relative clamping jaws 91, and clamping jaw 91 can insert the centre gripping groove 26 of two end plates 2 to press from both sides tightly and fill in lower box 5 with two end plates 2 and electric core group 1. Specifically, the end plates 2 are provided with a plurality of clamping grooves 26 at intervals along the length direction thereof, the clamping grooves 26 on the two end plates 2 are opposite to each other in pairs, and correspondingly, the auxiliary tools 9 are respectively matched with the two clamping grooves 26; it is also possible to set up a plurality of two opposite clamping jaws 91 on the auxiliary fixture 9 to cooperate with a plurality of clamping grooves 26 simultaneously through an auxiliary fixture 9, so as to clamp two end plates 2 and the electric core pack 1 located between two end plates 2 together, at this moment, the elastic medium 7 is deformed by extrusion, then the two end plates 2 clamped and the electric core pack 1 located between two end plates 2 can be plugged into the lower box body 5 through the auxiliary fixture 9, then the clamping jaws 91 are loosened, under the action of the elastic force of the elastic medium 7, the electric core pack 1 expands, then the auxiliary fixture 9 is pulled out from between the lower box body 5 and the end plates 2, the end plates 2 abut against the lower box body 5, so as to realize the boxing operation of the electric core pack 1. Because the packing belt 3 is cancelled, the auxiliary tool 9 can be repeatedly used, and the production cost can be effectively reduced.
It will be appreciated that the two jaws 91 may be relatively close together or far apart to effect clamping and unclamping, which may be achieved by one jaw 91 being fixed and the other jaw 91 being movable, or both jaws 91 being movable simultaneously. In this embodiment, the two clamping jaws 91 are both disposed on the connecting rod 92, and meanwhile, after the relative position between the two clamping jaws 91 is adjusted, the relative position between the two clamping jaws 91 can be locked by the locking structure. The locking structure may be a locking bolt passing through the clamping jaw 91 and capable of abutting against the connecting rod 92, or two nuts threadedly connected to the connecting rod 92, and the two nuts are respectively located on two sides of the movable clamping jaw 91.
Optionally, the end plate 2 is made of a plastic material. Of course, the end plate 2 may be made of other insulating materials, so as to provide insulation protection for the battery cell 11.
Optionally, the battery cell module further includes a bus bar 4, and the bus bar 4 is welded to the positive electrode or the negative electrode of the battery cell 11. The busbar 4 is used for connecting two electric cores 11 in series or in parallel, and by adopting a welding process, fasteners, positioning seats and the like for fixing the busbar 4 can be avoided, the number of parts can be reduced, and the installation process can be simplified.
Optionally, the cell group 1 further includes a wire harness isolation plate 6, the wire harness isolation plate 6 is disposed above the plurality of cells 11, and a positioning groove 61 is disposed above the positive electrode of the cell 11 on the wire harness isolation plate 6, and the positioning groove 61 is used for positioning the busbar 4.
Optionally, as shown in fig. 5, a plurality of battery cell modules are arranged in the lower box body 5, and the busbars 4 of two adjacent battery cell modules are welded. After a plurality of electric core modules pack into down in the box 5, then weld busbar 4 of two adjacent electric core modules, then install FPC8 to pencil division board 6.
The embodiment also provides a battery pack, which comprises the battery cell module in the scheme.
The present embodiment further provides a method for designing a battery pack, including:
s1: taking the enveloping space of the lower box body 5 and the length, width and height of the battery cell module as design input;
s2: filling the battery cell modules to the maximum extent according to the enveloping space of the lower box body 5, wherein the plurality of battery cell modules are arranged along the transverse direction or the longitudinal direction;
s3: determining the expansion direction of the battery cell module according to the arrangement direction of the battery cell module, wherein the side wall of the lower box body 5 positioned in the expansion direction of the battery cell module is used as a supporting beam;
s4: designing a clamping structure of a supporting beam of the lower box body 5 and an end plate 2 of the battery cell module, and limiting the battery cell module and the lower box body 5 in the vertical direction through the clamping structure;
s5: a guide structure is designed on the end plate 2, and the guide structure can guide the battery cell module to be placed into the enveloping space of the lower box body 5;
s6: checking the structural strength of the battery pack;
s7: and checking the electrical safety of the battery pack.
The structural strength of the battery pack is checked, wherein the structural strength of the battery pack is checked through four parameters of extrusion, vibration, impact and battery core expansion, and when the four parameters meet requirements, the strength of the battery pack reaches the standard. The method comprises the steps of checking the electrical safety of the battery pack, including checking the creepage distance and the electrical clearance, and when the creepage distance and the electrical clearance meet the requirements, indicating that the electrical safety of the battery pack reaches the standard.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (7)

1. The battery cell module comprises a battery cell group (1), wherein the battery cell group (1) comprises a plurality of battery cells (11), the battery cells (11) are arranged in M rows and N columns, and M and N are integers more than or equal to 2; the battery is characterized in that an elastic medium (7) is arranged between every two adjacent battery cells (11) along the row direction and/or the column direction;
the battery core module further comprises two end plates (2) arranged at two opposite ends of the battery core group (1), first bulges (21) and second bulges (22) are arranged on the end plates (2) at intervals, the second bulges (22) are positioned below the first bulges (21), grooves (23) are formed between the first bulges (21) and the second bulges (22),
a third protrusion (51) is arranged on the side wall of the lower box body (5) for accommodating the battery cell module, the third protrusion (51) is inserted into the groove (23), the third protrusion (51) can be abutted against the bottom wall of the groove (23), the lower surface of the first protrusion (21) is abutted against the upper surface of the third protrusion (51) along the vertical direction, and the upper surface of the second protrusion (22) is abutted against the lower surface of the third protrusion (51);
the battery cell module further comprises a packing belt (3), and the packing belt (3) is wound on the peripheries of the battery cell group (1) and the two end plates (2);
the battery cell module further comprises an auxiliary tool (9), clamping grooves (26) are formed in the end plates (2), the auxiliary tool (9) is provided with two opposite clamping jaws (91), and the clamping jaws (91) can be inserted into the clamping grooves (26) of the two end plates (2) so as to clamp and plug the two end plates (2) and the battery cell group (1) into the lower box body (5);
when electric core module installation to lower box (5), through first arch (21) and third arch (51) along vertical direction butt to through the lateral wall butt of third arch (51) and end plate (2), can guarantee that the relative position of electric core module and lower box (5) is stable, can avoid adopting the fastener of bolt, nut.
2. The cell module according to claim 1, wherein a guide slope (25) is provided on the end plate (2), and the guide slope (25) is used for guiding the cell module to be inserted into the lower case (5).
3. The cell module according to claim 1, wherein the end plate (2) is made of a plastic material.
4. The cell module of claim 1, further comprising a busbar (4), wherein the busbar (4) is welded to the positive or negative electrode of the cell (11).
5. The battery cell module of claim 4, wherein the lower box (5) is provided with a plurality of battery cell modules, and the busbars (4) of two adjacent battery cell modules are welded.
6. A battery pack, characterized by comprising the battery cell module of any one of claims 1-5.
7. A method of designing a battery pack according to claim 6, comprising:
s1: taking the enveloping space of the lower box body (5) and the length, width and height dimensions of the battery cell module as design input;
s2: filling the battery cell modules to the maximum extent according to the enveloping space of the lower box body (5), wherein the plurality of battery cell modules are arranged along the transverse direction or the longitudinal direction;
s3: determining the expansion direction of the battery cell module according to the arrangement direction of the battery cell group (1), and taking the side wall of the lower box body (5) positioned in the expansion direction of the battery cell module as a supporting beam;
s4: designing a clamping structure of a supporting beam of the lower box body (5) and an end plate (2) of the battery cell module, and limiting the battery cell module and the lower box body (5) in the vertical direction through the clamping structure;
s5: a guide structure is designed on the end plate (2), and the guide structure can guide the battery cell module to be placed into an enveloping space of the lower box body (5);
s6: checking the structural strength of the battery pack;
s7: and checking the electrical safety of the battery pack.
CN202011052050.6A 2020-09-29 2020-09-29 Battery cell module, battery pack and design method of battery pack Active CN112133858B (en)

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CN202011052050.6A CN112133858B (en) 2020-09-29 2020-09-29 Battery cell module, battery pack and design method of battery pack
PCT/CN2021/102990 WO2022068295A1 (en) 2020-09-29 2021-06-29 Battery cell module, battery pack, and method for designing battery pack

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CN202011052050.6A CN112133858B (en) 2020-09-29 2020-09-29 Battery cell module, battery pack and design method of battery pack

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CN112133858B true CN112133858B (en) 2023-02-21

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