CN217387315U - Battery structure subassembly, battery and electric vehicle - Google Patents
Battery structure subassembly, battery and electric vehicle Download PDFInfo
- Publication number
- CN217387315U CN217387315U CN202220579690.0U CN202220579690U CN217387315U CN 217387315 U CN217387315 U CN 217387315U CN 202220579690 U CN202220579690 U CN 202220579690U CN 217387315 U CN217387315 U CN 217387315U
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- current collecting
- casing
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- 238000007789 sealing Methods 0.000 claims description 47
- 238000003825 pressing Methods 0.000 claims description 39
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000008151 electrolyte solution Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a battery structure subassembly, including casing and utmost point post, the one end of utmost point post is equipped with backstop portion, backstop portion is located in the casing, utmost point post runs through the terminal surface of casing and with the casing passes through riveting fixed. The utility model provides a battery structure subassembly, utmost point post and casing pass through the riveting fixed, compare in welded fixed mode, have not only simplified fixed operation, have improved production efficiency, have reduced manufacturing cost moreover. The utility model also provides a battery and electric vehicle.
Description
Technical Field
The utility model belongs to the technical field of the battery technique and specifically relates to a battery structure subassembly, battery and electric vehicle are related to.
Background
With the development of electronic technology, lithium ion batteries have the advantages of high specific power, long cycle life, good safety performance, no pollution and the like, so that the lithium ion batteries are widely applied. Lithium ion batteries can be divided into cylindrical batteries, square-shell batteries, soft-package batteries and the like according to the shapes, wherein the cylindrical batteries are concerned more and more, and the application of the cylindrical batteries is also more and more extensive.
Current cylinder battery generally includes the casing, apron and electric core etc, the anodal connecting terminal and the negative connecting terminal of current cylinder battery set up respectively in the relative both ends of cylinder battery, thereby there is certain restriction to the technique in groups of battery, influence arranging and the battery energy density of battery (because anodal connecting terminal and negative connecting terminal set up respectively in the relative both ends of cylinder battery, when the battery is parallelly connected in groups, must put the battery according to the demand of corresponding polarity earlier, not only increased the risk that the mistake was put to the battery, and the quantity of structure spare part has been increased, it is comparatively complicated to make the wiring design, and the production cost is increased, the energy density of battery has been reduced. In addition, the current collecting disc of the cylindrical battery and the pole have long electric connection path and small contact area, so that the heat conducting performance is poor. Therefore, the existing cylindrical battery needs to be structurally improved to solve the problems of complexity in arrangement of battery grouping, production cost and the like, and improve the heat dissipation performance and sealing performance of the battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery structure subassembly and battery, aim at solving or at least part solve the not enough of above-mentioned background art existence, utmost point post passes through the riveting with the casing and fixes, compares in welded fixed mode, has not only simplified fixed operation, has improved production efficiency, has reduced manufacturing cost moreover.
An embodiment of the utility model provides a battery structure subassembly, which comprises a housin, battery structure subassembly still includes utmost point post, the one end of utmost point post is equipped with backstop portion, backstop portion is located in the casing, utmost point post runs through the terminal surface of casing and with the casing passes through riveting fixed.
In an achievable manner, the end face of the housing is provided with a through hole, the pole comprises a main body part and a first end and a second end respectively located at two opposite ends of the main body part, the main body part is arranged in the through hole, and the first end and the second end respectively protrude from the main body part in opposite directions to the outside of the through hole; the stopping portion is arranged at the first end of the pole, the second end of the pole extends out of the shell, the first end and the second end are riveted, and the part of the shell participating in riveting is located between the first end and the second end.
In an implementation manner, the battery structural assembly further includes a pressing block, the pressing block participates in riveting, namely the pressing block, the pole and the shell are riveted, and the part of the pressing block participating in riveting is located between the pole and the shell.
In an achievable form, the compact is provided at the first end and/or the second end of the pole.
In an achievable mode, the pressing block is of an annular structure, and the pressing block is sleeved at the first end and/or the second end of the pole.
In an achievable form, the second end of the pole is formed with a flange, the stop, the flange and the housing being riveted; the portion of the housing that participates in riveting is located between the stopper and the flange.
In an achievable form, the press block is disposed on the pole adjacent the flange, the press block being located between the flange and the housing; or, the briquetting set up in be close to on the utmost point post the position of backstop portion, the briquetting is located backstop portion with between the casing.
In an implementation manner, the battery structure assembly further includes an insulating sealing ring, the insulating sealing ring is sleeved on the pole, and the insulating sealing ring is used for insulating and sealing between the pole and the casing.
In an implementation manner, the battery structure assembly further includes a first current collecting disc located in the housing, and the first current collecting disc is electrically connected with the pole.
In an implementation manner, the first current collecting disc comprises a disc body and an electric connection portion, the electric connection portion is formed by extending and protruding the disc body towards the pole, and the electric connection portion is electrically connected with the pole.
In an implementation manner, a central hole is formed on the pole, the electric connection portion is inserted into the central hole, and the electric connection portion is electrically connected with the central hole.
In an implementable manner, the side walls of the electrical connection contact the inner walls of the central bore to effect electrical connection of the electrical connection to the central bore.
In an implementable manner, the battery structure assembly further comprises a sealing plate in sealing connection with the terminal post, the sealing plate sealing a central aperture on the terminal post.
In an implementable form, the post is a positive post or a negative post.
Another embodiment of the utility model provides a battery, including above battery structure subassembly.
In an implementation manner, the battery further includes a first current collecting disc, a second current collecting disc, an electric core, and a cover plate, where the first current collecting disc, the second current collecting disc, and the electric core are all disposed in the casing, an opening is disposed at a bottom end of the casing, and the cover plate is disposed at the opening; the two sides of the first current collecting disc are respectively electrically connected with the top end of the battery cell and the pole, and the two sides of the second current collecting disc are respectively electrically connected with the bottom end of the battery cell and the cover plate. In an implementation manner, two sides of the first current collecting disc are respectively in contact with the top end of the battery cell and the terminal to realize electrical connection, and two sides of the second current collecting disc are respectively in contact with the bottom end of the battery cell and the casing to realize electrical connection.
In one implementable manner, the first current collecting disk may be a positive current collecting disk or an negative current collecting disk; the second current collecting plate can also be a positive current collecting plate or a negative current collecting plate. When the first current collecting disc is a positive current collecting disc, the second current collecting disc is a negative current collecting disc; and conversely, when the first current collecting plate is an anode current collecting plate, the second current collecting plate is a cathode current collecting plate.
Another embodiment of the present invention further provides an electric vehicle, including the battery described above.
The utility model provides a battery structure subassembly, utmost point post and casing pass through the riveting fixed, compare in welded fixed mode, have not only simplified fixed operation, have improved production efficiency, have reduced manufacturing cost moreover.
Drawings
Fig. 1 is a schematic cross-sectional view of a battery module according to a first embodiment of the present invention.
Fig. 2 is a schematic perspective view of the first current collecting plate of fig. 1.
Fig. 3 is a schematic cross-sectional view of a battery module according to a second embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a battery module according to a third embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of a battery module according to a fourth embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The terms of orientation of the upper, lower, left, right, front, back, top, bottom, etc. (if any) referred to in the specification and claims of the present invention are defined as the positions of the structures in the drawings and the positions of the structures relative to each other, and are only for the sake of clarity and convenience in describing the technical solutions. It is to be understood that the use of directional terms should not be taken to limit the scope of the invention as claimed.
As shown in fig. 1, the utility model discloses the battery structure subassembly that the first embodiment provided, including casing 1, and utmost point post 3, utmost point post 3 is for falling T shape structure, and the one end of utmost point post 3 is equipped with backstop portion 31, and backstop portion 31 is formed by the lateral wall of utmost point post 3 along radial outside protrusion, and backstop portion 31 is located casing 1, and utmost point post 3 runs through casing 1's terminal surface and passes through the riveting with casing 1 and fix.
Specifically, in the present embodiment, the pole 3 and the housing 1 are fixed by riveting, which simplifies the operation, improves the production efficiency, and reduces the production cost compared with the method of welding.
As shown in fig. 1, as an embodiment, the battery structural assembly further includes a pressing block 4, the pressing block 4 participates in riveting, that is, the pressing block 4, the pole 3 and the housing 1 are riveted, the pressing block 4 is disposed on the pole 3, and the part of the pressing block 4 participating in riveting is located between the pole 3 and the housing 1. When riveting, the pole 3 and the pressing block 4 are embedded.
As an embodiment, the compact 4 may be an aluminum compact. Of course, in other embodiments, the compact 4 may be made of other materials.
As shown in fig. 1, as an embodiment, the end face of the housing 1 is provided with a through hole 11, the pole 3 includes a main body portion and a first end and a second end respectively located at two opposite ends of the main body portion, the main body portion is disposed in the through hole 11, and the first end and the second end respectively extend and protrude outward of the through hole 11 in opposite directions from the main body portion (in this embodiment, the first end extends and protrudes downward from the main body portion, and the second end extends and protrudes upward from the main body portion). Backstop portion 31 sets up in the first end of utmost point post 3, and the second end of utmost point post 3 stretches out outside casing 1, and casing 1, first end and second end three rivet, and casing 1 participates in between riveted part is located first end and the second end.
As shown in fig. 1, as an embodiment, the pressing block 4 is disposed at the second end of the pole 3 (i.e. the pressing block 4 fills the upper end of the pole 3). Of course, in other embodiments, the compact 4 may be disposed at the first end of the pole 3, or disposed at both the first end and the second end of the pole 3.
As shown in fig. 1, as an embodiment, the pressing block 4 has a ring structure, and the pressing block 4 is sleeved on the second end of the pole 3. Of course, in other embodiments, the pressing block 4 may also be sleeved on the first end of the pole 3, or both the first end and the second end of the pole 3.
As shown in fig. 1, as an embodiment, the second end of the pole 3 is formed with a flange 32, the flange 32 is formed by the sidewall of the pole 3 protruding outward in the radial direction, the flange 32 is located outside the housing 1, and the stopper 31 and the flange 32 are riveted with the housing 1; the part of the housing 1 that participates in the riveting is located between the stopper 31 and the flange 32. The pressing block 4 is sleeved on the pole 3 at a position close to the flange 32, and the pressing block 4 is located between the flange 32 and the casing 1. During caulking, the retainer 4 is fitted to the flange 32. Of course, in other embodiments, the pressing piece 4 may also be sleeved on the pole 3 at a position close to the stopping portion 31, and the pressing piece 4 is located between the stopping portion 31 and the housing 1.
Specifically, the stopper 31 is a structure of the pole post 3 itself (i.e., the stopper 31 is present before the pole post 3 and the housing 1 are riveted), and the flange 32 is formed when the pole post 3 and the housing 1 are riveted. Specifically, as shown in fig. 1, in this embodiment, when the pole 3 and the housing 1 are riveted, the pole 3 with the inverted T-shaped structure is inserted into the through hole 11 on the housing 1 from bottom to top, and then the upper end of the pole 3 is mechanically pressed (such as spin riveting) and flattened to form a flange 32; in the process of pressing and flattening the pole column 3 to form the flange 32, an upsetting effect (namely, the length of the pole column 3 is shortened and the diameter of the pole column 3 is increased) can be formed on the pole column 3, so that the pole column 3 and the shell 1 are fixed mutually, and the pole column 3 and the shell 1 are riveted. Wherein, backstop portion 31 and flange 32 all play limiting displacement, and backstop portion 31 and flange 32 cooperate and compress tightly casing 1 to prevent that utmost point post 3 from coming off in the through-hole 11 on casing 1. Meanwhile, when the pole 3 and the case 1 are riveted, the insulating seal ring 51 is compressed in the process of forming the flange 32 of the pole 3, so that the gap between the stopper portion 31 and the case 1 is completely filled with the insulating seal ring 51, and the sealing performance of the battery is improved.
As shown in fig. 1 and fig. 2, as an embodiment, the battery structural assembly further includes a first current collecting plate 6, the first current collecting plate 6 is disposed in the housing 1, and the first current collecting plate 6 is in contact with the pole 3 to electrically connect the first current collecting plate 6 and the pole 3.
As shown in fig. 1 and fig. 2, as an embodiment, the first current collecting plate 6 includes a plate body 61 and an electrical connection portion 62, the electrical connection portion 62 extends and protrudes from the plate body 61 toward the pole 3, the plate body 61 contacts with an end surface of the battery cell 8, and the electrical connection portion 62 contacts with the pole 3 to electrically connect the electrical connection portion 62 with the pole 3.
As shown in fig. 1 and 2, as an embodiment, a center hole 33 is formed on the pole 3, an electrical connection portion 62 is inserted into the center hole 33, and the electrical connection portion 62 is electrically connected to the center hole 33 to electrically connect the electrical connection portion 62 and the pole 3.
As shown in fig. 1 and 2, as an embodiment, a side wall of the electrical connection portion 62 contacts an inner wall of the central hole 33 to electrically connect the electrical connection portion 62 and the central hole 33.
Specifically, in the present embodiment, the cross section of the electrical connection portion 62 is a circular structure, and the electrical connection portion 62 is a hollow truncated cone-shaped structure with a diameter that is gradually reduced in a direction close to the pole 3. Through set up electric connection portion 62 on first current collecting tray 6 to the area of contact of increase first current collecting tray 6 and utmost point post 3 makes the inside heat that produces of electric core 8 can derive from utmost point post 3 fast, thereby improves the thermal runaway that leads to greatly because of electric core 8 calorific capacity when big multiplying power charges and discharges. Of course, as shown in fig. 3, in other embodiments, the first collecting plate 6 may also have a flat, disc-shaped configuration.
As shown in fig. 1, as an embodiment, the battery structural assembly further includes an insulating sealing ring 51, the insulating sealing ring 51 is sleeved on the pole 3, and the insulating sealing ring 51 is used for insulating and sealing between the pole 3 and the housing 1.
As shown in fig. 1, in one embodiment, an insulating gasket 51 is disposed in the through hole 11, and the insulating gasket 51 is located between the outer wall of the post 3 and the inner wall of the through hole 11.
Specifically, in this embodiment, the insulating sealing ring 51 has an inverted T-shaped structure (of course, in other embodiments, the insulating sealing ring 51 may also have an O-shaped structure, etc.), a part of the insulating sealing ring 51 is located in the through hole 11 (i.e., located between the outer side wall of the pole 3 and the inner wall of the through hole 11), and another part of the insulating sealing ring 51 is sandwiched between the stopper portion 31 and the end surface of the housing 1, so that the insulating sealing ring 51 can achieve a good sealing effect on the sealing between the pole 3 and the housing 1, and can isolate the pole 3 from the housing 1 to prevent the pole 3 and the housing 1 from conducting electricity. Meanwhile, when the pole 3 is riveted with the housing 1, the stopping portion 31 can extrude the insulating sealing ring 51 in the process of upsetting the pole 3 by pressurizing the pole 3, so that the insulating sealing ring 51 between the stopping portion 31 and the housing 1 is pressed, and the sealing effect is further improved.
As shown in fig. 1, as an embodiment, the battery structural assembly further includes an insulating ring 52, the insulating ring 52 is disposed between the end surfaces of the compact 4 and the casing 1, the insulating ring 52 is used for isolating the compact 4 from the casing 1 to prevent the compact 4 and the casing 1 from conducting electricity, and the insulating ring 52 can also play a certain sealing role.
Specifically, in the present embodiment, the insulating seal ring 51 is a small circular ring structure with an open center, and the insulating ring 52 is a large circular ring structure with an open center.
As shown in fig. 1, as an embodiment, the battery structure assembly further includes an insulating spacer 53, and the insulating spacer 53 is disposed between the stopper portion 31 and the end surface of the case 1.
Specifically, in the present embodiment, a part of the insulating spacer 53 is located between the stopper portion 31 and the end surface of the case 1, and another part is located between the first current collecting plate 6 and the end surface of the case 1, thereby preventing the pole 3 and the case 1 from being electrically conductive, and preventing the first current collecting plate 6 from being electrically conductive with the case 1.
As shown in fig. 1, as an embodiment, the battery structure assembly further includes a sealing plate 9 (the sealing plate 9 may be an explosion-proof plate), the sealing plate 9 is connected to the top surface of the terminal 3 in a sealing manner, and the sealing plate 9 seals the central hole 33 of the terminal 3.
As shown in fig. 3, the present invention provides a battery assembly substantially the same as the first embodiment, but different from the first embodiment in the structure of the terminal 3 and the first current collecting plate 6. Specifically, in this embodiment, the first current collecting plate 6 is a flat disc-shaped structure, the pole 3 is a solid block (i.e., the pole 3 is not provided with the central hole 33), and the first current collecting plate 6 is in contact with the bottom surface of the pole 3.
As shown in fig. 4, the battery module according to the third embodiment of the present invention is substantially the same as the first embodiment, except that no pressing block 4 is provided on the terminal 3.
As shown in fig. 5, the battery assembly according to the fourth embodiment of the present invention is substantially the same as the first embodiment, and has a difference in that the structure of the terminal 3 and the first current collecting plate 6 is different, and the terminal 3 is not provided with the pressing block 4. Specifically, in this embodiment, the first collecting plate 6 is a flat disc-shaped structure, the pole post 3 is a solid block (i.e., the pole post 3 is not provided with the central hole 33), and the first collecting plate 6 is in contact with the bottom surface of the pole post 3.
As shown in fig. 1, the first embodiment of the present invention further provides a battery, especially suitable for a cylindrical battery, which includes the above-mentioned battery structure assembly.
As shown in fig. 1, as an embodiment, the battery further includes a battery cell 8 and a first current collecting plate 6, the battery cell 8 and the first current collecting plate 6 are both disposed in the casing 1, the first current collecting plate 6 is located between the top end of the battery cell 8 and the terminal 3, and two sides of the first current collecting plate 6 are electrically connected to the top end of the battery cell 8 and the terminal 3, respectively.
As shown in fig. 1, as an embodiment, both sides of the first current collecting plate 6 are respectively in contact with the top end of the battery cell 8 and the pole 3 to realize electrical connection.
As shown in fig. 1 and fig. 2, as an embodiment, the first current collecting plate 6 includes a plate body 61 and an electrical connection portion 62, the electrical connection portion 62 extends and protrudes from the plate body 61 toward the pole 3, and the plate body 61 contacts with an end surface of the battery cell 8; the pole 3 is provided with a center hole 33, the electric connection portion 62 is inserted into the center hole 33, and the side wall of the electric connection portion 62 is in contact with the inner wall of the center hole 33.
As shown in fig. 1, as an embodiment, the battery further includes a cover plate 2 and a second current collecting plate 7, the case 1 is a cylindrical groove structure, an opening 12 is formed at the bottom end of the case 1, the cover plate 2 is fixed at the opening 12, and the cover plate 2 is electrically connected to the case 1. The second current collecting disc 7 is arranged in the shell 1, the second current collecting disc 7 is located between the bottom end of the battery cell 8 and the cover plate 2, and two sides of the second current collecting disc 7 are electrically connected with the bottom end of the battery cell 8 and the cover plate 2 respectively.
As shown in fig. 1, as an embodiment, both sides of the second current collecting plate 7 are respectively in contact with the bottom end of the battery cell 8 and the cap plate 2 to achieve electrical connection.
As shown in fig. 1, as an embodiment, a positive tab 81 and a negative tab 82 are respectively disposed at two ends of the battery cell 8, the terminal 3 is a positive post, the first current collecting plate 6 is a positive current collecting plate, the second current collecting plate 7 is a negative current collecting plate, two sides of the first current collecting plate 6 are respectively in contact with the positive tab 81 of the battery cell 8 and the terminal 3, and two sides of the second current collecting plate 7 are respectively in contact with the negative tab 82 of the battery cell 8 and the cover plate 2. Of course, in other embodiments, it may be: the pole 3 is a negative pole, the first current collecting disc 6 is a negative current collecting disc, the second current collecting disc 7 is a positive current collecting disc, two sides of the first current collecting disc 6 are respectively contacted with the negative pole lug 82 of the battery cell 8 and the pole 3, and two sides of the second current collecting disc 7 are respectively contacted with the positive pole lug 81 of the battery cell 8 and the cover plate 2.
Specifically, when the terminal 3 is a positive terminal, the housing 1 may be a steel shell (or may be made of other materials), in which case the terminal 3 serves as a positive electrical connection terminal of the battery, and the housing 1 and the cover plate 2 serve as negative electrical connection terminals of the battery; when the post 3 is a negative post, the housing 1 may be an aluminum case, and the post 3 serves as a negative electrical connection terminal of the battery, and the housing 1 and the cover plate 2 serve as a positive electrical connection terminal of the battery. In the embodiment, the terminal surfaces of the terminal 3 and the housing 1 are respectively used as the positive electrode electrical connection terminal and the negative electrode electrical connection terminal (or the terminal 3 is used as the negative electrode electrical connection terminal, and the terminal surface of the housing 1 is used as the positive electrode electrical connection terminal), so that the positive electrode and the negative electrode of the battery are led out to the same side of the battery (for example, the positive electrode and the negative electrode of the battery are led out to the top end of the battery in the embodiment), compared with the design that the positive electrode electrical connection terminal and the negative electrode electrical connection terminal are respectively arranged at the two opposite ends of the battery, grouping of the battery is facilitated, arrangement of the battery cells 8 can be facilitated, the number of structural parts when the battery is grouped is reduced, wiring design of the BMS is simplified, cost is reduced, arrangement of the battery is more compact, and energy density of the battery is improved.
As shown in fig. 1, as an embodiment, the positive tab 81 and the negative tab 82 of the battery cell 8 are both designed as full tabs, and the first current collecting disk 6 and the positive tab 81, and the second current collecting disk 7 and the negative tab 82 may be fixed by welding.
In one embodiment, an electrolyte solution is further disposed in the casing 1, so that the battery can be charged and discharged through electrochemical reactions between the positive electrode sheet and the negative electrode sheet of the battery cell 8 and the electrolyte solution. The electrolyte solution may be composed of organic solvents such as EC, PC, DEC, EMC and organic solvents such as LiPF 6 Or LiBF 4 The electrolyte solution may be in a liquid state, a solid state, a gel state, or the like.
The embodiment of the utility model provides an advantage of battery structure subassembly and battery lies in:
1. the terminal 3 is riveted with the shell 1, so that the operation is simplified, the production efficiency is improved, and the production cost is reduced;
2. the end surfaces of the pole 3 and the shell 1 are respectively used as a positive electrode electric connecting terminal and a negative electrode electric connecting terminal (or the pole 3 is used as the negative electrode electric connecting terminal, and the end surface of the shell 1 is used as the positive electrode electric connecting terminal), so that the positive electrode and the negative electrode of the battery are led out to the same side of the battery, grouping of the battery is facilitated, arrangement of the battery cell 8 can be facilitated, the number of structural parts is reduced when the battery is grouped, wiring design of the BMS is simplified, cost is reduced, meanwhile, arrangement of the battery is more compact, and energy density of the battery is improved;
3. the electric connection part 62 is arranged on the first current collecting disc 6, so that the contact area between the first current collecting disc 6 and the pole 3 is increased, heat generated inside the battery cell 8 can be rapidly led out from the pole 3, and thermal runaway caused by large heat productivity of the battery cell 8 during high-rate charge and discharge is improved;
4. the insulating sealing ring 51 has good sealing performance (when the pole 3 is riveted with the shell 1, the pole 3 can extrude the insulating sealing ring 51 when being upset, so that the insulating sealing ring 51 is pressed, the sealing effect of the insulating sealing ring 51 is improved), the insulating sealing ring is durable for a long time, the problem of liquid leakage of the battery in long-term use can be prevented, and the service life of the battery is prolonged;
5. by arranging the pressing block 4, the insulating ring 52 can be prevented from being cracked or crushed in the upsetting process of the pole 3, so that the sealing performance of the battery is influenced. During upsetting, the insulator ring 52 is easily crushed or fractured due to the small contact area between the bottom of the formed flange 32 and the insulator ring 52. After the pressing block 4 is added, the contact area between the pressing block 4 and the insulating ring 52 is increased because the surface area of the pressing block 4 is larger than that of the flange 23; in addition, because the pressing block 4 has certain elasticity, the pressing block 4 can further buffer the pressure on the insulating ring 52 during upsetting. Therefore, by arranging the pressing block 4, the contact area between the pressing block and the insulating ring 52 is increased, the buffering effect is achieved, the pressure on the insulating ring 52 in the upsetting process is greatly reduced, and the sealing performance of the battery is improved.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (15)
1. The utility model provides a battery structure subassembly, includes casing (1), its characterized in that, battery structure subassembly still includes utmost point post (3), the one end of utmost point post (3) is equipped with backstop portion (31), backstop portion (31) are located in casing (1), utmost point post (3) run through the terminal surface of casing (1) and with casing (1) are through the riveting fixed.
2. The battery structural assembly according to claim 1, wherein the end face of the housing (1) is provided with a through hole (11), the terminal (3) comprises a main body part and a first end and a second end respectively located at two opposite ends of the main body part, the main body part is arranged in the through hole (11), and the first end and the second end respectively protrude from the main body part in opposite directions to the outside of the through hole (11); the stopping part (31) is arranged at the first end of the pole (3), the second end of the pole (3) extends out of the shell (1), and the shell (1), the first end and the second end are riveted; the part of the housing (1) participating in riveting is located between the first end and the second end.
3. The battery structural assembly according to claim 2, further comprising a pressing block (4), wherein the pressing block (4) participates in riveting, and wherein the pressing block (4) is provided at the first end and/or the second end of the pole (3).
4. The battery structure assembly according to claim 3, wherein the pressing block (4) is of an annular structure, and the pressing block (4) is sleeved on the first end and/or the second end of the pole (3).
5. The battery structural assembly according to claim 3, characterized in that the second end of the pole (3) is formed with a flange (32), the stop (31), the flange (32) and the housing (1) being riveted; the part of the housing (1) involved in riveting is located between the stop (31) and the flange (32).
6. The battery structural assembly according to claim 5, characterized in that the compact (4) is arranged on the pole (3) close to the flange (32), the compact (4) being located between the flange (32) and the housing (1); or the pressing block (4) is arranged on the pole (3) and close to the stopping part (31), and the pressing block (4) is located between the stopping part (31) and the shell (1).
7. The battery structural assembly according to claim 1, further comprising an insulating sealing ring (51), wherein the insulating sealing ring (51) is sleeved on the pole (3), and the insulating sealing ring (51) is used for insulating and sealing between the pole (3) and the housing (1).
8. The battery structural assembly according to claim 1, further comprising a first current collecting disc (6), said first current collecting disc (6) being located within said housing (1), said first current collecting disc (6) being electrically connected to said pole (3).
9. The battery structural assembly according to claim 8, wherein the first current collecting plate (6) comprises a plate body (61) and an electrical connection portion (62), the electrical connection portion (62) is formed by extending and protruding the plate body (61), and the electrical connection portion (62) is electrically connected with the pole (3).
10. The battery structural assembly according to claim 9, wherein the pole (3) is provided with a central hole (33), the electrical connection portion (62) is inserted into the central hole (33), and the electrical connection portion (62) is electrically connected with the central hole (33).
11. The battery structural assembly according to claim 10, further comprising a sealing plate (9), wherein the sealing plate (9) is in sealing connection with the pole post (3), and wherein the sealing plate (9) seals a central hole (33) in the pole post (3).
12. The battery structural assembly according to any one of claims 1 to 11, wherein the post (3) is a positive post or a negative post.
13. A battery comprising the battery structural assembly of any one of claims 1-12.
14. The battery according to claim 13, further comprising a first current collecting plate (6), a second current collecting plate (7), a cell (8) and a cover plate (2), wherein the first current collecting plate (6), the second current collecting plate (7) and the cell (8) are all arranged in the casing (1), an opening (12) is arranged at the bottom end of the casing (1), and the cover plate (2) is arranged at the opening (12); the two sides of the first current collecting disc (6) are respectively electrically connected with the top end of the battery cell (8) and the pole (3), and the two sides of the second current collecting disc (7) are respectively electrically connected with the bottom end of the battery cell (8) and the cover plate (2).
15. An electric vehicle comprising a battery as claimed in any one of claims 13 or 14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220579690.0U CN217387315U (en) | 2022-03-16 | 2022-03-16 | Battery structure subassembly, battery and electric vehicle |
| PCT/CN2022/110113 WO2023173656A1 (en) | 2022-03-16 | 2022-08-03 | Battery structure assembly, battery, and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220579690.0U CN217387315U (en) | 2022-03-16 | 2022-03-16 | Battery structure subassembly, battery and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217387315U true CN217387315U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220579690.0U Active CN217387315U (en) | 2022-03-16 | 2022-03-16 | Battery structure subassembly, battery and electric vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN217387315U (en) |
| WO (1) | WO2023173656A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115692956A (en) * | 2022-11-07 | 2023-02-03 | 厦门海辰储能科技股份有限公司 | Battery, energy storage device and electric equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209133626U (en) * | 2018-11-06 | 2019-07-19 | 苏州安靠电源有限公司 | High-multiplying-power battery |
| CN213401445U (en) * | 2020-11-26 | 2021-06-08 | 江西远东电池有限公司 | Novel full utmost point ear structure cylinder battery |
| CN215578675U (en) * | 2021-05-21 | 2022-01-18 | 湖北亿纬动力有限公司 | Assembly structure of positive pole and positive current collecting plate, battery module and battery pack |
| CN113346168A (en) * | 2021-05-21 | 2021-09-03 | 湖北亿纬动力有限公司 | Cylindrical battery with novel structure |
| CN215988973U (en) * | 2021-07-28 | 2022-03-08 | 东莞锂微电子科技有限公司 | Button cell structure |
| CN113991186B (en) * | 2021-10-29 | 2023-10-27 | 蜂巢能源科技(无锡)有限公司 | Battery assembly method and lithium battery |
-
2022
- 2022-03-16 CN CN202220579690.0U patent/CN217387315U/en active Active
- 2022-08-03 WO PCT/CN2022/110113 patent/WO2023173656A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115692956A (en) * | 2022-11-07 | 2023-02-03 | 厦门海辰储能科技股份有限公司 | Battery, energy storage device and electric equipment |
| CN115692956B (en) * | 2022-11-07 | 2024-01-23 | 厦门海辰储能科技股份有限公司 | Battery, energy storage device and electric equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023173656A1 (en) | 2023-09-21 |
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