CN217983591U - Battery pack and vehicle - Google Patents
Battery pack and vehicle Download PDFInfo
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- CN217983591U CN217983591U CN202222379723.XU CN202222379723U CN217983591U CN 217983591 U CN217983591 U CN 217983591U CN 202222379723 U CN202222379723 U CN 202222379723U CN 217983591 U CN217983591 U CN 217983591U
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- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The present disclosure relates to a battery pack and a vehicle, the battery pack comprising a plurality of cells, the cells comprising: a conductive housing having an accommodating space formed therein; the core body is accommodated and fixed in the accommodating space and comprises a pole core, a first tab and a second tab, wherein the first tab and the second tab are positioned on two opposite sides of the pole core, and the first tab is electrically connected with the conductive shell; the first pole is arranged outside the conductive shell and insulated from the conductive shell, and the second pole lug is electrically connected with the first pole; the battery cells are connected in series, and the first pole of one of any two battery cells connected in series is in electrical contact with the conductive shell of the other battery cell. Through above-mentioned technical scheme, the battery package that this disclosure provided can be convenient for maintain or change single electric core, has the characteristics that cost of maintenance is low.
Description
Technical Field
The present disclosure relates to the field of battery technology, and in particular, to a battery pack and a vehicle.
Background
In the battery pack, the electrical connection between the battery cells is usually achieved by laser welding busbars on positive and negative poles of the battery cells, and a plurality of battery cells are connected in series to form the battery pack for supplying power to a vehicle.
However, the method of connecting the bus bar and the positive pole and the negative pole of the battery cell by laser welding has high operation difficulty, and when one battery cell in the battery pack is broken or damaged, the battery pack is difficult to maintain or replace, only one whole battery pack can be replaced, and thus the maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
The first aspect of the present disclosure is directed to a battery pack, which can facilitate maintenance or replacement of a single battery cell, and has a low maintenance cost.
In order to achieve the above object, the present disclosure provides a battery pack including a plurality of battery cells, the battery cells including: a conductive housing having an accommodating space formed therein; the core body is accommodated and fixed in the accommodating space and comprises a pole core, a first tab and a second tab, wherein the first tab and the second tab are positioned on two opposite sides of the pole core, and the first tab is electrically connected with the conductive shell; the first pole is arranged outside the conductive shell and insulated from the conductive shell, and the second pole lug is electrically connected with the first pole; wherein a plurality of the cells are connected in series, the first terminal of one of the two cells connected in series at random being in electrical contact with the conductive housing of the other.
Optionally, the battery cell further includes a second pole and a first elastic connector, the first elastic connector is electrically connected between the first pole and the second pole, and the second pole of one of the two battery cells connected in series at random is electrically contacted with the conductive shell of the other battery cell.
Optionally, the first elastic connector is configured as a spring, and one end of the first elastic connector is welded to the first pole and the other end is welded to the second pole.
Optionally, the first tab is welded to the conductive housing.
Optionally, the second tab is welded to the first pole.
Optionally, the battery pack further includes a plurality of conductive assemblies, the plurality of battery cells are arranged in a row, the plurality of battery cells in the same row are connected in series between two conductive assemblies, each conductive assembly includes a first conductive strip and a second elastic connecting piece, the second elastic connecting piece is electrically connected to the first conductive strip and is used for being electrically contacted with the battery cell, and an elastic force of the second elastic connecting piece is used for compressing the plurality of battery cells in the same row.
Optionally, the conductive assembly further includes a second conductive sheet, the second elastic connecting member is fixedly connected between the first conductive sheet and the second conductive sheet, and the second conductive sheet is in electrical contact with the conductive shell of the battery cell or the first pole.
Optionally, the second elastic connector is configured as a spring, and one end of the second elastic connector is welded to the first conductive sheet and the other end is welded to the second conductive sheet.
Optionally, the conductive housing is an aluminum housing or a steel housing.
According to an object of a second aspect of the present disclosure, there is provided a vehicle including the above battery pack.
By the technical scheme, in the battery pack provided by the disclosure, a plurality of battery cells are connected in series, each battery cell comprises a conductive shell, a core body and a first pole column, the core body is accommodated and fixed in the conductive shell, the first pole column is arranged outside the conductive shell and insulated from the conductive shell, wherein the first pole column of the core body is electrically connected with the conductive shell, and the second pole column of the core body is electrically connected with the first pole column.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a battery cell in a battery pack provided in an embodiment of the present disclosure.
Description of the reference numerals
10-battery cell; 101-a conductive housing; 1021-a first tab; 1022 — a second tab; 103-a first pole; 104-a first elastic connector; 105-a second pole; 20-a conductive component; 201-a first conductive sheet; 202-a second elastic connector; 203-second conductive sheet.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the use of the directional terms "inner and outer" means "inner and outer" with respect to the self-profile of the corresponding component, unless otherwise specified. In addition, the terms "first," "second," and the like, as used herein, are intended to distinguish one element from another, and are not necessarily order or importance. Moreover, in the following description, when referring to the figures, the same reference numbers in different figures represent the same or similar elements unless otherwise explained. The foregoing definitions are provided to illustrate and explain the present disclosure and should not be construed to limit the present disclosure.
According to an embodiment of the present disclosure, there is provided a battery pack, as shown in fig. 1 to 2, including a plurality of battery cells 10, the battery cells 10 including: a conductive housing 101, an accommodation space being formed inside the conductive housing 101; the core body is accommodated and fixed in the accommodating space and comprises a pole core, a first pole lug 1021 and a second pole lug 1022, wherein the first pole lug 1021 and the second pole lug 1022 are positioned on two opposite sides of the pole core, and the first pole lug 1021 is electrically connected with the conductive shell 101; the first pole post 103 is arranged outside the conductive shell 101 and insulated from the conductive shell 101, and the second pole ear 1022 is electrically connected with the first pole post 103; wherein a plurality of battery cells 10 are connected in series, the first pole 103 of one of two battery cells 10 connected in series is electrically contacted with the conductive housing 101 of the other.
With the above technical solution, in the battery pack provided by the present disclosure, a plurality of battery cells 10 are connected in series, each battery cell 10 includes a conductive housing 101, a core, and a first pole 103, the core is accommodated and fixed inside the conductive housing 101, the first pole 103 is disposed outside the conductive housing 101 and insulated from the conductive housing 101, wherein a first tab 1021 of the core is electrically connected to the conductive housing 101, and a second tab 1022 of the core is electrically connected to the first pole 103, such that one of the conductive housing 101 and the first pole 103 serves as a positive pole of the core, the other serves as a negative pole of the core, and the first pole 103 of any two battery cells 10 connected in series is electrically contacted to the conductive housing 101 of the other, thereby achieving electrical connection between the plurality of battery cells 10, through this kind of mode, can realize the electricity through the electrical contact of first utmost point post 103 with electrically conductive shell 101 between electric core 10 and the electric core 10 and be connected, compare in the traditional mode that realizes the electricity through the laser welding busbar between electric core 10 and the electric core 10, the battery package that this disclosure provided does not need special laser welding equipment welding busbar to realize the electricity between electric core 10 and the electric core 10 and is connected, laser welding technology has been reduced, and because connect through the contact and connect the electricity between electric core 10 and the electric core 10, therefore under the condition that individual electric core 10 in the battery package that this disclosure provided takes place to damage or trouble, can directly change the electric core 10 that damages or trouble down, need not change whole battery package, cost of maintenance can be reduced to a great extent.
In the specific embodiment provided by the present disclosure, the battery cell 10 further includes a second pole post 105 and a first elastic connector 104, the first elastic connector 104 is electrically connected between the first pole post 103 and the second pole post 105, and the second pole post 105 of any two battery cells 10 connected in series is electrically contacted with the conductive housing 101 of the other battery cell. Due to the elasticity of the first elastic connecting member 104, the first pole post 103 and the second pole post 105 can be elastically connected, so that when there is an assembly tolerance between the second pole post 105 of one of any two electric cores 10 connected in series and the conductive housing 101 of the other one of the two electric cores, the first elastic connecting member 104 can absorb the assembly tolerance, that is, the second pole post 105 can adjust the posture (i.e., the direction and the angle inclined with respect to the first pole post 103) with respect to the first pole post 103 so as to adjust the second pole post 105 to be in close contact with the conductive housing 101 connected in series, thereby ensuring the reliability of the electrical connection between the two electric cores 10 connected in series.
Wherein the first resilient connecting element 104 may be configured in any suitable manner. For example, in one embodiment, the first elastic connector 104 may be configured as a metal elastic sheet, in which case, one end of the first elastic connector 104 is welded to the first pole post 103, and the other end is welded to the second pole post 105, thereby achieving the elastic connection between the first pole post 103 and the second pole post 105. In other embodiments, referring to fig. 2, the first elastic connector 104 may be configured as a spring, and one end of the first elastic connector 104 is welded to the first pole post 103 and the other end is welded to the second pole post 105, thereby achieving an elastic connection between the first pole post 103 and the second pole post 105. In addition, the number of the first elastic connectors 104 may be designed in any suitable way according to actual needs, such as one, two, three or four, and the like, and the disclosure is not limited thereto.
In the specific embodiments provided by the present disclosure, the first tab 1021 may be electrically connected with the conductive housing 101 in any suitable manner. In some embodiments, the first tab 1021 may be welded to the conductive housing 101, and the first tab 1021 is fixedly connected to the conductive housing 101 while the first tab 1021 is electrically connected to the conductive housing 101. In other embodiments, the first tab 1021 may be fixedly connected to the conductive housing 101 through a conductive member such as a screw, a pin, etc. and electrically connected to the conductive housing 101 through the conductive member, thereby fixedly connecting the first tab 1021 to the conductive housing 101 and simultaneously electrically connecting the first tab 1021 to the conductive housing 101. In another embodiment, a metal spring plate may be further disposed between the first tab 1021 and the conductive housing 101, one end of the metal spring plate is fixed and conductively connected to one of the first tab 1021 and the conductive housing 101 by welding or a fastener (e.g., a bolt, a screw, etc.), and the other end of the metal spring plate is in conductive contact with the other of the first tab 1021 and the conductive housing 101, so as to achieve electrical connection between the first tab 1021 and the conductive housing 101.
Likewise, in the specific embodiments provided in the present disclosure, the second pole ear 1022 may also be electrically connected to the first pole post 103 in any suitable manner. In some embodiments, the second pole ear 1022 may be connected to the first pole post 103 by welding, and the second pole ear 1022 is fixedly connected to the first pole post 103 by welding while the second pole ear 1022 is electrically connected to the first pole post 103. In other embodiments, the second pole ear 1022 may be fixedly connected to the first pole 103 through a conductive member such as a screw or a pin, and the conductive member and the first pole 103 may be used to achieve both the fixed connection of the second pole ear 1022 and the first pole 103 and the electrical connection of the second pole ear 1022 and the first pole 103. In another embodiment, a metal spring may be disposed between the second pole ear 1022 and the first pole 103, one end of the metal spring is fixed and electrically connected to one of the second pole ear 1022 and the first pole 103 by welding or a fastener (e.g., a bolt, a screw, etc.), and the other end of the metal spring is in electrically conductive contact with the other of the second pole ear 1022 and the first pole 103, so as to achieve electrical connection between the second pole ear 1022 and the first pole 103.
In the present disclosure, the first pole post 103 may be insulated from the conductive housing 101 by an insulating member (not shown in the drawings), the second pole ear 1022 is electrically connected to the first pole post 103, and the second pole ear 1022 is insulated from the conductive housing 101, wherein the second pole ear 1022 may be insulated from the conductive housing 101 by providing a gap between the second pole ear 1022 and the conductive housing 101 to separate the second pole ear 1022 from the conductive housing 101, in which case a portion of the first pole post 103 protrudes into the receiving space to be electrically connected to the second pole ear 1022. It is of course also possible to provide an insulating member between the second pole ear 1022 and the conductive housing 101 to prevent the second pole ear 1022 from contacting the conductive housing 101, thereby insulating the second pole ear 1022 from the conductive housing 101.
In the specific embodiment provided by the present disclosure, the battery pack further includes a plurality of conductive assemblies 20, the plurality of battery cells 10 are arranged in a row, and the plurality of battery cells 10 in the same row are connected in series between two conductive assemblies 20. Wherein the conductive member 20 may be configured in any suitable manner. Alternatively, referring to fig. 1, the conductive assembly 20 may include a first conductive sheet 201 and a second elastic connection member 202, where the second elastic connection member 202 is electrically connected to the first conductive sheet 201 and electrically contacted to the battery cell 10 to achieve electrical communication between the battery cell 10 and the first conductive sheet 201, and an elastic force of the second elastic connection member 202 is used to compress the battery cells 10 in the same row, so as to promote good contact between the battery cells 10 in the same row, and achieve end-to-end connection of positive and negative electrodes of the battery cells 10 for electrical conduction. Referring to fig. 1, a plurality of rows of battery cells 10 are connected in series integrally through a conductive assembly 20, the tail end of a previous row of battery cells 10 and the head end of a next row of battery cells 10 are connected in series between different rows of battery cells 10 by sharing a first conductive sheet 201, it is needless to say that the tail end of a previous row of battery cells 10 and the head end of a next row of battery cells 10 are electrically connected to respective corresponding first conductive sheets 201, and the two first conductive sheets 201 are electrically connected to each other through another conductive member. In addition, the second elastic connection member 202 may be in electrical contact with the conductive casing 101 of the battery cells 10 or the second pole 105, according to the arrangement of the multiple rows of battery cells 10.
In the specific embodiment provided by the present disclosure, in order to realize reliable contact between the conductive assembly 20 and the battery cell 10, the conductive assembly 20 further includes a second conductive sheet 203, the second elastic connection member 202 is fixedly connected between the first conductive sheet 201 and the second conductive sheet 203, the second conductive sheet 203 is electrically contacted with the conductive housing 101 of the battery cell 10 or the first pole 103, and since the second conductive sheet 203 is in surface contact with the conductive housing 101 of the battery cell 10 or the first pole 103, reliable contact between the conductive assembly 20 and the battery cell 10 can be ensured. Moreover, because the second elastic connection member 202 has elasticity, the elastic connection between the first conductive sheet 201 and the second conductive sheet 203 can be achieved, so that, when there is an assembly tolerance between the battery cell 10 and the conductive assembly 20, the second elastic connection member 202 can absorb the assembly tolerance, that is, the second conductive sheet 203 can adjust the posture (i.e., the direction and angle inclined with respect to the first conductive sheet 201) with respect to the first conductive sheet 201 so as to adjust the second conductive sheet 203 to be in close contact with the battery cell 10, thereby ensuring the reliability of the electrical connection between the conductive assembly 20 and the battery cell 10.
Wherein the second elastic connection 202 may be configured in any suitable manner. For example, in one embodiment, the second elastic connector 202 may be configured as a metal dome, in which case one end of the second elastic connector 202 is soldered to the first conductive sheet 201 and the other end is soldered to the second conductive sheet 203, thereby achieving an elastic connection between the first conductive sheet 201 and the second conductive sheet 203. In other embodiments, referring to fig. 1, the second elastic connection member 202 may be configured as a spring, and one end of the second elastic connection member 202 is welded to the first conductive sheet 201 and the other end is welded to the second conductive sheet 203, thereby achieving elastic connection between the first conductive sheet 201 and the second conductive sheet 203. In addition, the number of the second elastic connectors 202 may be designed in any suitable way according to actual needs, for example, one, two, three, or four, etc., which is not limited in this disclosure.
In the specific embodiments provided by the present disclosure, the conductive housing 101 may be made of any material capable of conducting electricity. In one embodiment, the conductive housing 101 may be an aluminum housing, in which case the first tab 1021 is a positive tab. In another embodiment, the conductive case 101 may be a steel case, in which case the first tab 1021 is a negative tab.
According to an object of a second aspect of the present disclosure, there is provided a vehicle including the above battery pack. The battery pack provided by the present disclosure also has the above features, and is not described herein again in order to avoid redundancy.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A battery pack, comprising a plurality of cells, the cells comprising:
a conductive housing having an accommodating space formed therein;
the core body is accommodated and fixed in the accommodating space and comprises a pole core, a first tab and a second tab, wherein the first tab and the second tab are positioned on two opposite sides of the pole core, and the first tab is electrically connected with the conductive shell; and
the first pole is arranged outside the conductive shell and insulated from the conductive shell, and the second pole lug is electrically connected with the first pole;
the battery cells are connected in series, and the first pole of one of any two battery cells connected in series is in electrical contact with the conductive shell of the other battery cell.
2. The battery pack of claim 1, wherein the cells further comprise a second pole and a first resilient connector electrically connected between the first pole and the second pole, the second pole of any two of the cells in series electrically contacting a conductive housing of the other.
3. The battery pack according to claim 2, wherein the first elastic connector is configured as a spring, and one end of the first elastic connector is welded to the first pole and the other end is welded to the second pole.
4. The battery pack of claim 1, wherein the first tab is welded to the conductive housing.
5. The battery pack of claim 1, wherein the second tab is welded to the first pole.
6. The battery pack of claim 1, further comprising a plurality of conductive assemblies, wherein the plurality of battery cells are arranged in a row, the plurality of battery cells in the same row are connected in series between two conductive assemblies, each conductive assembly comprises a first conductive sheet and a second elastic connecting member, the second elastic connecting member is electrically connected to the first conductive sheet and electrically contacted to the battery cells, and an elastic force of the second elastic connecting member is used for compressing the plurality of battery cells in the same row.
7. The battery pack of claim 6, wherein the conductive assembly further comprises a second conductive strip, the second elastic connector is fixedly connected between the first conductive strip and the second conductive strip, and the second conductive strip is in electrical contact with the conductive housing of the battery cell or the first terminal.
8. The battery pack of claim 7, wherein the second elastic connector is configured as a spring, and one end of the second elastic connector is welded to the first conductive tab and the other end is welded to the second conductive tab.
9. The battery pack of any one of claims 1-8, wherein the conductive housing is an aluminum housing or a steel housing.
10. A vehicle, characterized in that the vehicle comprises a battery pack according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222379723.XU CN217983591U (en) | 2022-09-07 | 2022-09-07 | Battery pack and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222379723.XU CN217983591U (en) | 2022-09-07 | 2022-09-07 | Battery pack and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217983591U true CN217983591U (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222379723.XU Active CN217983591U (en) | 2022-09-07 | 2022-09-07 | Battery pack and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217983591U (en) |
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2022
- 2022-09-07 CN CN202222379723.XU patent/CN217983591U/en active Active
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