CN114759303A - Battery cell shell, battery cell and battery pack - Google Patents
Battery cell shell, battery cell and battery pack Download PDFInfo
- Publication number
- CN114759303A CN114759303A CN202210552501.5A CN202210552501A CN114759303A CN 114759303 A CN114759303 A CN 114759303A CN 202210552501 A CN202210552501 A CN 202210552501A CN 114759303 A CN114759303 A CN 114759303A
- Authority
- CN
- China
- Prior art keywords
- battery
- fixing
- wall
- cell
- side walls
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003825 pressing Methods 0.000 claims description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims 1
- 239000011258 core-shell material Substances 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 208000028173 post-traumatic stress disease Diseases 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a battery cell shell, a battery cell and a battery pack. Wherein, the electricity core shell includes: a housing having an accommodating space and an opening communicating with the accommodating space; the end cover is arranged at the opening in a covering mode; the shell comprises a bottom wall, two opposite end walls and two opposite side walls, the outer surface area of each end wall is smaller than that of each side wall, an accommodating space is defined by the bottom wall, the two end walls and the two side walls, and the thickness of each end wall is larger than that of each side wall. By applying the technical scheme of the invention, the problem of low strength of the battery cell in the related technology can be effectively solved.
Description
Technical Field
The invention relates to the field of power batteries, in particular to a battery cell shell, a battery cell and a battery pack.
Background
New energy automobile generally adopts the battery package to supply power for whole car, includes a plurality of electric cores in the battery package, and a plurality of electric cores connect through series connection or parallelly connected mode and provide electric power for whole car. Electric core among the correlation technique generally is thin shell structure, and electric core shell itself does not have the position that can bear the weight of stress greatly, if the intensity that increases electric core then need additionally increase other fixed knot construct, for example make into electric core module with electric core, and electric core module contains fixed knot constructs such as bottom plate, end plate, curb plate, and this kind of mode of setting up assembly process is loaded down with trivial details, contains complicated size chain calculation, processing cost height in overall design. The other mode is that the glue injection space is increased or decreased between the battery core and the battery pack shell, and a fixing structure is formed after the glue is solidified to improve the strength of the battery core shell. This approach requires designing a flow path for the glue, waiting for the glue to cure, and also adds complexity to the process.
Disclosure of Invention
The invention mainly aims to provide a battery cell shell, a battery cell and a battery pack, so as to solve the problem of low strength of the battery cell in the related art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a cell casing including: a housing having an accommodating space and an opening communicating with the accommodating space; the end cover is arranged at the opening in a covering manner; the shell comprises a bottom wall, two opposite end walls and two opposite side walls, the outer surface area of each end wall is smaller than that of each side wall, an accommodating space is defined by the bottom wall, the two end walls and the two side walls, and the thickness of each end wall is larger than that of each side wall.
Furthermore, the end wall is provided with a mounting hole extending along the height direction of the end wall, and the battery cell shell further comprises a sensor arranged in the mounting hole.
Furthermore, the sensor comprises a detection part and a lead electrically connected with the detection part, and the detection part is arranged in the mounting hole.
Further, at least one mounting hole is provided in each end wall.
Furthermore, each end wall is provided with a plurality of mounting holes, and the mounting holes arranged on one end wall are arranged at intervals in the width direction of the cell shell.
Further, the end wall includes end wall body portion and sets up the hem portion in end wall body portion both sides, and two hem portions and the superpose setting of two lateral walls one-to-one, perhaps, two hem portions and the parallel and level setting of two lateral walls one-to-one.
Further, the shell is of an integrally formed structure.
Further, the end wall includes connecting plate and the reinforcing plate that the components of a whole that can function independently set up, and the connecting plate is provided with the mounting groove with the equal fixed connection of lateral wall and diapire on the reinforcing plate, and the connecting plate is located the mounting groove, and the mounting hole sets up on the reinforcing plate.
According to another aspect of the present invention, there is provided a battery cell, including: the battery cell shell is the battery cell shell; an end cover of the battery cell shell is provided with a pole; and the winding core is arranged in the accommodating space of the battery cell shell and is electrically connected with the pole.
According to another aspect of the present invention, there is provided a battery pack including: a case having an installation space; a plurality of electric cores are arranged in the box body, and the electric cores are the electric cores.
Further, the box includes the case diapire, two first case lateral walls that set up relatively and set up two second case lateral walls between two first case lateral walls relatively, and a plurality of electric cores set up at the interval on the extending direction of first case lateral wall, all is provided with a plurality of first partition muscle on the internal surface of every first case lateral wall, and a plurality of first partition muscle are at the interval setting on the extending direction of first case lateral wall, and first partition muscle corresponds and sets up between two adjacent electric cores.
Further, a plurality of electric cores include a plurality of electric core groups, a plurality of electric core groups set up along the extending direction interval of second case lateral wall, include a plurality of electric cores that set up along the interval on the extending direction of first case lateral wall in every electric core group, the box still includes at least one baffle with first case lateral wall parallel arrangement, electric core group sets up between first case lateral wall and baffle or electric core group sets up between two adjacent baffles, all be provided with a plurality of second separation muscle that the interval set up on two sides of every baffle, second separation muscle sets up between two adjacent electric cores.
Further, a plurality of first fixed orificess that the box diapire wall was kept away from to first case lateral wall still is provided with the interval on the surface and sets up, every first fixed orificess is located between two adjacent electric cores, the box still includes a plurality of first mountings that set up with a plurality of first fixed orificess one-to-one, first mounting includes first fixed column and sets up the first cap of pressing on first fixed column, first fixed column sets up in first fixed orifices, first cap of pressing crimping is on the terminal surface of two adjacent electric cores.
Furthermore, a plurality of second fixing holes are further formed in the surface, away from the bottom wall of the box, of each baffle, each second fixing hole is located between four adjacent electric cores, the box body further comprises a plurality of second fixing pieces which are arranged in one-to-one correspondence with the second fixing holes, each second fixing piece comprises a second fixing column and a second pressing cap arranged on the corresponding second fixing column, the corresponding second fixing columns are arranged in the corresponding second fixing holes, and the second pressing caps are pressed on the end faces of the four adjacent electric cores.
Furthermore, the box body also comprises a first pressing strip arranged on the side wall of the first box and a third fastener penetrating through the first pressing strip and the first fixing hole, and the first pressing strip is matched with the end face of the battery core in a compression joint manner; and/or the box body further comprises a second pressing strip arranged on the baffle and a fourth fastener penetrating through the second pressing strip and the second fixing hole, and the second pressing strip is matched with the end face of the battery cell in a compression joint mode.
According to the technical scheme, the battery cell shell comprises a shell body and an end cover, and the winding core is arranged in an accommodating space defined by the shell body and the end cover. The casing includes diapire, end wall and lateral wall, and this embodiment increases the thickness of end wall, makes it be greater than the thickness of lateral wall to can promote cell shell's intensity effectively, increase cell shell's shock resistance. Adopt the electric core's behind the electric core shell structure of this embodiment intensity of electric core to obtain effectively strengthening, consequently can pack into the shell of battery package with a plurality of electric cores and form the battery package to save the step that connects into the module, promoted the machining efficiency of battery package, reduced the design degree of difficulty of battery package, also practiced thrift the cost simultaneously. On the other hand, the strength of the battery cell is not required to be enhanced in a glue injection mode by adopting the battery cell shell structure, and the processing efficiency of connecting the battery cell into the battery pack is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic perspective view of a first embodiment of a cell according to the present invention;
fig. 2 shows an exploded view of the cell of fig. 1;
fig. 3 shows an enlarged schematic view of the cell of fig. 2 at a;
fig. 4 shows a schematic perspective view of a sensor of the cell of fig. 1;
fig. 5 shows a schematic perspective view of a second embodiment of a battery cell according to the present invention;
fig. 6 shows an enlarged schematic structure at B of the cell of fig. 5;
fig. 7 is a perspective view illustrating a battery pack according to the present invention;
fig. 8 illustrates an enlarged structural view at C of the battery pack of fig. 7;
fig. 9 illustrates an enlarged structural view at D of the battery pack of fig. 7;
fig. 10 is a schematic view illustrating an exploded structure of the battery pack of fig. 7.
Wherein the figures include the following reference numerals:
1. an installation space; 10. a housing; 20. an end cap; 30. a bottom wall; 40. an end wall; 41. an end wall body portion; 42. a hem part; 43. mounting holes; 44. a connecting plate; 45. a reinforcing plate; 50. a side wall; 60. a sensor; 61. a detection unit; 62. a lead wire; 70. a box body; 71. a bottom wall of the tank; 72. a first tank sidewall; 721. a first partitioning rib; 722. a first fixing hole; 73. a second tank side wall; 74. a baffle plate; 741. a second partitioning rib; 742. a second fixing hole; 80. an electric core; 90. a first fixing member; 91. a first fixed column; 92. a first press cap; 100. a second fixing member; 101. a second fixed column; 102. and a second press cap.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
As shown in fig. 1 to 3, the cell casing of the first embodiment includes a casing 10 and an end cap 20. The housing 10 has an accommodating space and an opening communicating with the accommodating space; the end cover 20 covers the opening; the housing 10 includes a bottom wall 30, two opposite end walls 40 and two opposite side walls 50, wherein the outer surface area of the end wall 40 is smaller than that of the side walls 50, the bottom wall 30, the two end walls 40 and the two side walls 50 enclose a containing space, and the thickness of the end wall 40 is larger than that of the side walls 50.
By applying the technical scheme of the embodiment, the cell shell comprises a shell 10 and an end cover 20, and the winding core is arranged in an accommodating space surrounded by the shell 10 and the end cover 20. The casing 10 includes a bottom wall 30, an end wall 40 and a side wall 50, and in the present embodiment, the thickness of the end wall 40 is increased to be greater than that of the side wall 50, so that the strength of the cell casing can be effectively improved, and the impact resistance of the cell casing can be increased. Adopt the electric core's behind the electric core shell structure of this embodiment intensity of electric core to obtain effectively strengthening, consequently can pack into the shell of battery package with a plurality of electric cores and form the battery package to save the step that connects into the module, promoted the machining efficiency of battery package, reduced the design degree of difficulty of battery package, also practiced thrift the cost simultaneously. On the other hand, the strength of the battery cell is enhanced by adopting the battery cell shell structure without a glue injection mode, and the processing efficiency of connecting the battery cell into a battery pack is improved.
It should be noted that the surface area of the end wall 40 is smaller than the surface area of the side wall 50, and the thickness of the raised end wall 40 is greater than the thickness of the raised side wall 50, so that the strength of the cell casing can be increased, and the production cost of the cell casing can be controlled.
As shown in fig. 1 to 4, in the first embodiment, a mounting hole 43 extending in a height direction of the end wall 40 is provided on the end wall 40, and the cell casing further includes a sensor 60, where the sensor 60 is provided in the mounting hole 43. In the above structure, since the thickness of the end wall 40 is increased, the sensor 60 may be disposed in the mounting hole 43 for monitoring the state of the cell. In this embodiment, sensor 60 is temperature sensor, and temperature sensor sets up in mounting hole 43, can carry out real-time supervision to the temperature of electric core to be favorable to in time discovering the state of generating heat of electric core, promote the security of battery package.
Of course, in other embodiments, other structures may be mounted within the mounting holes 43.
As shown in fig. 3 and 4, in the first embodiment, the sensor 60 includes a detecting portion 61 and a lead 62 electrically connected to the detecting portion 61, and the detecting portion 61 is disposed in the mounting hole 43. In the structure, the temperature sensing probe is arranged on the detection part 61, the detection part 61 is arranged in the mounting hole 43 and used for measuring the temperature of the battery cell, the lead wire 62 is electrically connected with the circuit board of the battery pack, the control device is further arranged on the circuit board, and the temperature measured by the detection part 61 can be transmitted to the control device through the lead wire 62 and the circuit board, so that the control device can integrally monitor the temperatures of the battery cells.
Specifically, the detection part 61 may be interference-coupled in the mounting hole 43, or the detection part 61 may be adhesively coupled in the mounting hole 43.
As shown in fig. 1-3, in a first embodiment, at least one mounting hole 43 is provided in each end wall 40. In the above structure, since the structure inside different battery packs is different, providing the mounting hole 43 on each end wall 40 can provide a plurality of mounting positions for mounting the sensor 60, so that the sensor 60 can be mounted at a proper position, thereby facilitating optimization of the structural layout inside the battery pack. Above-mentioned structure makes electric core can adapt to the installation of multiple type battery package, has effectively promoted the commonality of electric core.
As shown in fig. 1 to 3, in the present embodiment, a plurality of mounting holes 43 are provided in each end wall 40, and the plurality of mounting holes 43 provided in one end wall 40 are provided at intervals in the width direction of the cell casing. Above-mentioned structure can further increase sensor 60's mounted position for sensor 60's mounted position is more nimble, thereby further promotes the suitability of the battery package of electric core and multiple model, has further promoted the commonality of electric core.
As shown in fig. 3, in the present embodiment, the end wall 40 includes an end wall body 41 and folded edges 42 disposed at both sides of the end wall body 41, and the two folded edges 42 are disposed flush with the two side walls 50 in a one-to-one correspondence. The battery cell shell is simple in structure and convenient to machine and form.
Specifically, as shown in fig. 3, in the present embodiment, the housing 10 may be provided as an insulating structure and integrally formed by injection molding or extrusion. In the above structure, the insulating structure is adopted to set the casing 10, so that the tab or the connection terminal of the winding core is insulated from the casing 10, thereby effectively reducing the probability of short circuit inside the battery core. On the other hand, the insulating material is adopted to set the casing 10, so that the safety of forming the battery pack by a plurality of battery cores is further improved.
Of course, in other embodiments, the end wall 40 may also include a connecting plate 44 and a reinforcing plate 45 that are separately arranged, the connecting plate 44 may be made of metal, the connecting plate 44 is fixedly connected (for example, fixedly connected by welding) with both the side wall 50 and the bottom wall 30, the reinforcing plate 45 is provided with a mounting groove, the connecting plate 44 is located in the mounting groove, and the mounting hole 43 is provided on the reinforcing plate 45. The above structure can increase the strength of the housing 10 by the reinforcing plate 45, and the connecting plate 44 and the reinforcing plate 45 can be connected by bonding or the like. Above-mentioned structure can utilize original electric core shell structure, increases reinforcing plate 45 again on original electric core shell structure's basis to make the holistic intensity of electric core shell higher.
As shown in fig. 5 and 6, the present application further provides a second embodiment of a cell casing, where the casing of the second embodiment is different from the casing of the first embodiment in that: the two folded portions 42 of the outer shell of the second embodiment are stacked in one-to-one correspondence with the two side walls 50. The above structure enables the end wall 40 of the cell casing to protrude from the side wall 50. When a plurality of electric cores are installed in the box body of the battery pack, the plurality of electric cores need to be arranged along the width direction of the electric cores, and because the end wall 40 of the electric core shell protrudes out of the side wall 50, a heat dissipation space can be formed between the side walls 50 of the two adjacent electric cores, so that the heat of the electric cores can be timely led out, and the reduction of the thermal runaway risk of the electric cores is facilitated.
As shown in fig. 1 to 6, the present application further provides a battery cell including: cell core shell and book core. The battery cell shell is the battery cell shell; an end cover 20 of the battery cell shell is provided with a pole; the roll core is arranged in the accommodating space of the battery cell shell and is electrically connected with the pole. In the structure, because the battery cell shell has the advantages of high strength, the processing difficulty of forming the battery pack by the battery cell is reduced, and the processing efficiency of the battery pack is improved, the battery cell with the battery cell shell also has the advantages.
As shown in fig. 7 to 10, the present application also provides a battery pack including a case 70 and a plurality of battery cells 80. Wherein the case 70 has an installation space; a plurality of battery cells 80 are arranged in the box body 70, and the battery cells 80 are the battery cells described above. In the structure, because the battery core 80 has the advantage of high strength, the battery pack with the battery core has the advantages of low processing difficulty and high processing efficiency.
As shown in fig. 7 to 10, in the present embodiment, the case 70 includes a case bottom wall 71, two first case side walls 72 disposed opposite to each other, and two second case side walls 73 disposed opposite to each other between the two first case side walls 72, the plurality of battery cells 80 are disposed at intervals in the extending direction of the first case side walls 72, a plurality of first separating ribs 721 are disposed on the inner surface of each first case side wall 72, the plurality of first separating ribs 721 are disposed at intervals in the extending direction of the first case side walls 72, and the first separating ribs 721 are correspondingly disposed between two adjacent battery cells 80. In the above structure, two adjacent battery cells 80 are arranged to be separated by the first separation rib 721, so that a heat dissipation space is formed between the side walls of the two adjacent battery cells 80, the heat of the battery cells can be derived in time, and the thermal runaway risk of the battery cells is reduced.
It should be noted that the above-mentioned box body 70 may be adapted to a cell having the cell casing of the first embodiment, or may be adapted to a cell having the cell casing of the second embodiment. Although the cell having the cell casing of the second embodiment can form the heat dissipation space between the side walls of two adjacent cells according to the structure of the end wall 40, the heat dissipation space between the adjacent cells can be further increased by adopting the structure of the box body 70, which is beneficial to further reducing the thermal runaway probability of the cell.
As shown in fig. 7 to 10, in the present embodiment, the plurality of electric cells 80 includes a plurality of electric core groups, the plurality of electric core groups are arranged at intervals along the extending direction of the second box side wall 73, each electric core group includes a plurality of electric cells 80 arranged at intervals along the extending direction of the first box side wall 72, the box body 70 further includes at least one baffle 74 arranged in parallel with the first box side wall 72, the electric core groups are arranged between the first box side wall 72 and the baffle 74 or the electric core groups are arranged between two adjacent baffles 74, a plurality of second separating ribs 741 arranged at intervals are arranged on two side surfaces of each baffle 74, and the second separating ribs 741 are arranged between two adjacent electric cells 80. In the above structure, the box body 70 may also be used to accommodate multiple sets of battery cells 80. Specifically, one or more baffles 74 may be disposed in the box body 70, two adjacent cell groups are separated by the baffles 74, a plurality of second separating ribs 741 are disposed on the baffles 74, and the second separating ribs can cooperate with the second separating ribs 741 on the adjacent baffles 74 or cooperate with the first separating ribs 721 on the first box side wall 72, so that the heat dissipation effect of the cells 80 in the box body 70 is better.
As shown in fig. 7 to 10, in this embodiment, a plurality of first fixing holes 722 are further disposed on a surface of the first box side wall 72 away from the box bottom wall 71 at intervals, each first fixing hole 722 is located between two adjacent electric cores 80, the box body 70 further includes a plurality of first fixing pieces 90 disposed in one-to-one correspondence with the plurality of first fixing holes 722, each first fixing piece 90 includes a first fixing post 91 and a first pressing cap 92 disposed on the first fixing post 91, the first fixing post 91 is disposed in the first fixing hole 722, and the first pressing cap 92 is pressed against end faces of two adjacent electric cores 80. In the above structure, the first fixing member 90 is a screw, the first fixing column 91 is provided with an external thread, and the first fixing hole 722 is provided with an internal thread matched with the external thread. After the first fixing posts 91 are fitted into the first fixing holes 722, the first press caps 92 can press against the end caps 20 of two adjacent battery cells 80, so that the battery cells 80 can be stably fixed on the box body 70.
As shown in fig. 7 to 10, in the present embodiment, a plurality of second fixing holes 742 are further provided at intervals on a surface of each baffle 74 away from the box bottom wall 71, each second fixing hole 742 is located between four adjacent battery cells 80, the box body 70 further includes a plurality of second fixing pieces 100 that are provided in one-to-one correspondence with the plurality of second fixing holes 742, each second fixing piece 100 includes a second fixing column 101 and a second pressing cap 102 that is provided on the second fixing column 101, the second fixing column 101 is provided in the second fixing hole 742, and the second pressing cap 102 is pressed against end faces of the four adjacent battery cells 80. In the above configuration, when the baffle 74 is included in the case 70, the second fixing hole 742 is provided in the baffle 74 for attaching the second fixing element 100, the second fixing element 100 is a screw, and after the second fixing element 100 is installed in the second fixing hole 742, the second pressing cap 102 can press and fix the four adjacent battery cells 80, so that the battery cells 80 can be stably fixed to the case 70.
Of course, in other embodiments, the box body 70 may further include a first pressing bar disposed on the first box side wall 72, and a third fastener disposed through the first pressing bar and the first fixing hole 722, where the first pressing bar is in press fit with the end face of the battery core 80. In the above structure, the lower surface of the pressing strip can be matched with the end cover 20 of the battery cell 80 in a crimping manner, and the pressing strip is screwed on the box body 70 through the third fastener, so that the battery cell 80 is fixedly connected with the box body 70. The structure can fix a plurality of battery cores 80 on the box body 70 by only a small number of fasteners, which is beneficial to improving the assembly efficiency of the battery pack. In addition, when the box body includes the baffle 74, the box body 70 further includes a second pressing bar disposed on the baffle 74 and a fourth fastener penetrating through the second pressing bar and the second fixing hole 742, and the second pressing bar is in press fit with the end face of the electrical core 80. The structure can further improve the assembly efficiency of the battery pack.
In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A cell casing, comprising:
a housing (10) having an accommodating space and an opening communicating with the accommodating space;
the end cover (20) is arranged at the opening in a covering mode;
the shell (10) comprises a bottom wall (30), two opposite end walls (40) and two opposite side walls (50), the outer surface area of the end walls (40) is smaller than that of the side walls (50), the bottom wall (30), the two end walls (40) and the two side walls (50) enclose the accommodating space, and the thickness of the end walls (40) is larger than that of the side walls (50).
2. The cell casing according to claim 1, wherein the end wall (40) is provided with a mounting hole (43) extending in a height direction of the end wall (40), and the cell casing further comprises a sensor (60), wherein the sensor (60) is arranged in the mounting hole (43).
3. The cell casing according to claim 2, wherein the sensor (60) comprises a detection portion (61) and a lead wire (62) electrically connected to the detection portion (61), and the detection portion (61) is disposed in the mounting hole (43).
4. The cell casing according to claim 2, wherein at least one mounting hole (43) is provided in each of the end walls (40).
5. The cell casing according to claim 4, wherein a plurality of mounting holes (43) are provided in each of the end walls (40), and the plurality of mounting holes (43) provided in one of the end walls (40) are arranged at intervals in a width direction of the cell casing.
6. The cell casing of claim 2,
the end wall (40) comprises an end wall body part (41) and folded parts (42) arranged at two sides of the end wall body part (41), the two folded parts (42) and the two side walls (50) are arranged in a one-to-one corresponding overlapping mode, or,
the two flanging parts (42) are flush with the two side walls (50) in one-to-one correspondence.
7. The cell casing according to any of claims 1 to 6, characterized in that the casing (10) is of one-piece construction.
8. The cell casing according to any one of claims 2 to 6, wherein the end wall (40) comprises a connecting plate (44) and a reinforcing plate (45) which are separately arranged, the connecting plate (44) is fixedly connected with both the side wall (50) and the bottom wall (30), a mounting groove is arranged on the reinforcing plate (45), the connecting plate (44) is located in the mounting groove, and the mounting hole (43) is arranged on the reinforcing plate (45).
9. A battery cell, comprising:
a cell casing of any one of claims 1 to 8; an end cover (20) of the battery cell shell is provided with a pole;
and the winding core is arranged in the accommodating space of the battery cell shell and is electrically connected with the pole.
10. A battery pack, comprising:
a case (70) having an installation space;
a plurality of cells (80) arranged within the case (70), the cells (80) being in accordance with claim 9.
11. The battery pack according to claim 10, wherein the case (70) includes a case bottom wall (71), two first case side walls (72) disposed opposite to each other, and two second case side walls (73) disposed opposite to each other between the two first case side walls (72), the plurality of battery cells (80) are disposed at intervals in an extending direction of the first case side walls (72), a plurality of first separating ribs (721) are disposed on an inner surface of each first case side wall (72), the plurality of first separating ribs (721) are disposed at intervals in the extending direction of the first case side walls (72), and the first separating ribs (721) are correspondingly disposed between two adjacent battery cells (80).
12. The battery pack according to claim 11, wherein the plurality of battery cells (80) comprises a plurality of battery cell groups, the plurality of battery cell groups are arranged at intervals along the extending direction of the second box side wall (73), each battery cell group comprises a plurality of battery cells (80) arranged at intervals along the extending direction of the first box side wall (72), the tank (70) further comprising at least one baffle (74) arranged parallel to the first tank side wall (72), the electric core group is arranged between the first box side wall (72) and the baffle (74) or between two adjacent baffles (74), a plurality of second separating ribs (741) arranged at intervals are arranged on two side surfaces of each baffle (74), the second separating rib (741) is arranged between two adjacent battery cells (80).
13. The battery pack according to claim 12,
the surface of the first box side wall (72) far away from the box bottom wall (71) is further provided with a plurality of first fixing holes (722) arranged at intervals, each first fixing hole (722) is located between two adjacent electric cores (80), the box body (70) further comprises a plurality of first fixing pieces (90) arranged in one-to-one correspondence with the first fixing holes (722), each first fixing piece (90) comprises a first fixing column (91) and a first pressing cap (92) arranged on the first fixing column (91), the first fixing column (91) is arranged in the first fixing hole (722), and the first pressing caps (92) are pressed on the end faces of the two adjacent electric cores (80).
14. The battery pack according to claim 13,
a plurality of second fixing holes (742) are further formed in the surface, away from the bottom wall (71), of each baffle (74), the second fixing holes (742) are located between four adjacent electric cores (80), the box body (70) further comprises a plurality of second fixing pieces (100) which are arranged in one-to-one correspondence to the second fixing holes (742), each second fixing piece (100) comprises a second fixing column (101) and a second pressing cap (102) arranged on the second fixing column (101), the second fixing column (101) is arranged in the second fixing hole (742), and the second pressing caps (102) are pressed on the end faces of the four adjacent electric cores (80).
15. The battery pack according to claim 14,
the box body (70) further comprises a first pressing strip arranged on the first box side wall (72) and a third fastener penetrating through the first pressing strip and the first fixing hole (722), and the first pressing strip is in press fit with the end face of the battery core (80); and/or the presence of a gas in the gas,
the box body (70) further comprises a second pressing strip arranged on the baffle (74) and a fourth fastener penetrating through the second pressing strip and the second fixing hole (742), and the second pressing strip is in press fit with the end face of the battery core (80).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210552501.5A CN114759303A (en) | 2022-05-20 | 2022-05-20 | Battery cell shell, battery cell and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210552501.5A CN114759303A (en) | 2022-05-20 | 2022-05-20 | Battery cell shell, battery cell and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114759303A true CN114759303A (en) | 2022-07-15 |
Family
ID=82335023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210552501.5A Pending CN114759303A (en) | 2022-05-20 | 2022-05-20 | Battery cell shell, battery cell and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114759303A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1406395A (en) * | 2000-12-26 | 2003-03-26 | 松下电器产业株式会社 | Square battery container, method of manufacturing the container, and square battery using the container |
| US20130078501A1 (en) * | 2011-09-28 | 2013-03-28 | Uer Technology Corporation | Thin type battery and encapsulation structure thereof |
| JP2013171699A (en) * | 2012-02-21 | 2013-09-02 | Auto Network Gijutsu Kenkyusho:Kk | Attachment structure of temperature sensor |
| CN203192867U (en) * | 2013-01-18 | 2013-09-11 | 浙江南博电源科技有限公司 | Battery shell convenient for heat dissipation |
| CN207719287U (en) * | 2017-12-29 | 2018-08-10 | 杭州捷能科技有限公司 | A kind of rectangular cell module |
| JP2019040700A (en) * | 2017-08-23 | 2019-03-14 | 株式会社デンソー | Battery pack |
| CN111886712A (en) * | 2018-03-28 | 2020-11-03 | 本田技研工业株式会社 | Solid battery module |
| CN111919307A (en) * | 2018-03-28 | 2020-11-10 | 本田技研工业株式会社 | Solid-state battery and solid-state battery module |
| CN212323110U (en) * | 2020-04-17 | 2021-01-08 | 欣旺达电动汽车电池有限公司 | Electricity core mounting, battery module and battery box |
| CN215451593U (en) * | 2021-04-09 | 2022-01-07 | 欣旺达电动汽车电池有限公司 | Battery cell mounting structure, battery pack and electric automobile |
| CN215731970U (en) * | 2021-07-23 | 2022-02-01 | 瑞浦能源有限公司 | Battery pack based on square-shell winding battery core |
| CN215896561U (en) * | 2021-08-06 | 2022-02-22 | 江苏正力新能电池技术有限公司 | Battery module and electric device |
-
2022
- 2022-05-20 CN CN202210552501.5A patent/CN114759303A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1406395A (en) * | 2000-12-26 | 2003-03-26 | 松下电器产业株式会社 | Square battery container, method of manufacturing the container, and square battery using the container |
| US20130078501A1 (en) * | 2011-09-28 | 2013-03-28 | Uer Technology Corporation | Thin type battery and encapsulation structure thereof |
| JP2013171699A (en) * | 2012-02-21 | 2013-09-02 | Auto Network Gijutsu Kenkyusho:Kk | Attachment structure of temperature sensor |
| CN203192867U (en) * | 2013-01-18 | 2013-09-11 | 浙江南博电源科技有限公司 | Battery shell convenient for heat dissipation |
| JP2019040700A (en) * | 2017-08-23 | 2019-03-14 | 株式会社デンソー | Battery pack |
| CN207719287U (en) * | 2017-12-29 | 2018-08-10 | 杭州捷能科技有限公司 | A kind of rectangular cell module |
| CN111886712A (en) * | 2018-03-28 | 2020-11-03 | 本田技研工业株式会社 | Solid battery module |
| CN111919307A (en) * | 2018-03-28 | 2020-11-10 | 本田技研工业株式会社 | Solid-state battery and solid-state battery module |
| CN212323110U (en) * | 2020-04-17 | 2021-01-08 | 欣旺达电动汽车电池有限公司 | Electricity core mounting, battery module and battery box |
| CN215451593U (en) * | 2021-04-09 | 2022-01-07 | 欣旺达电动汽车电池有限公司 | Battery cell mounting structure, battery pack and electric automobile |
| CN215731970U (en) * | 2021-07-23 | 2022-02-01 | 瑞浦能源有限公司 | Battery pack based on square-shell winding battery core |
| CN215896561U (en) * | 2021-08-06 | 2022-02-22 | 江苏正力新能电池技术有限公司 | Battery module and electric device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3651237B1 (en) | Battery pack with improved assembly structure | |
| CN103890997B (en) | Medium-and-large-sized battery assembly | |
| KR101152635B1 (en) | Voltage Sensing Assembly for Battery Module and Battery Module Employed with the Same | |
| CN100355116C (en) | Rechargeable battery and battery module using the same | |
| CN101490871B (en) | Middle or large-sized battery module | |
| CN103608946B (en) | Battery module and the battery component including the battery module | |
| EP3416209B1 (en) | Integrated cartridge and battery pack comprising same | |
| KR101305224B1 (en) | Battery Module and Battery Pack Comprising the Same | |
| CN108258168A (en) | Square electric cell module | |
| KR20110132667A (en) | Battery module having novel structure | |
| CN101361208A (en) | Battery system | |
| JP6121516B2 (en) | Battery block | |
| CN206558567U (en) | Battery modules | |
| CN109891626A (en) | Battery pack | |
| CN104620415B (en) | Battery pack | |
| CN111149234A (en) | Electrically connected component housing case and battery module | |
| JP4744096B2 (en) | Pack battery | |
| CN106486624A (en) | Rechargeable battery | |
| CN207947332U (en) | Square electric cell module | |
| CN109950448A (en) | Soft package lithium battery mould group | |
| US10930908B2 (en) | Battery module housing, battery module, battery pack, battery and vehicle, and also method for producing a battery module, a battery pack and a battery | |
| EP3790080B1 (en) | Battery module and battery pack | |
| CN114759303A (en) | Battery cell shell, battery cell and battery pack | |
| JP2004130910A (en) | Battery module | |
| WO2022205795A1 (en) | Battery pack, energy storage system, and electrical device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518107 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Applicant after: Xinwangda Power Technology Co.,Ltd. Address before: 518107 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Applicant before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |