CN219534795U - Battery pack and battery pack - Google Patents
Battery pack and battery pack Download PDFInfo
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- CN219534795U CN219534795U CN202320028097.1U CN202320028097U CN219534795U CN 219534795 U CN219534795 U CN 219534795U CN 202320028097 U CN202320028097 U CN 202320028097U CN 219534795 U CN219534795 U CN 219534795U
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- battery pack
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery pack and a battery pack, wherein the battery pack comprises a first battery unit, a second battery unit, a first bus bar and a second bus bar, wherein the first battery unit and the second battery unit are alternately arranged, the first bus bar is connected with a first pole of an adjacent first single battery, the second bus bar is connected with a second pole of an adjacent second single battery, the first pole and the second pole are arranged on the same side, and the first bus bar and the second bus bar are mutually staggered in a first direction; the battery pack comprises a box body and the battery pack. According to the utility model, the first bus bar and the second bus bar are staggered in the first direction, and an overlapping area is not formed between the first bus bar and the second bus bar, so that isolation measures are not required, the first bus bar and the second bus bar can be directly arranged on the pole, the installation flow of the battery pack is simplified, and the assembly efficiency of the battery pack is improved.
Description
Technical Field
The utility model relates to the technical field of energy storage devices, in particular to a battery pack and a battery pack.
Background
The battery pack is a main energy storage device of a new energy automobile, the endurance mileage and the safety performance of the automobile are directly affected, in order to meet the requirements of the battery pack on capacity, thermal stability and the like, batteries of different types are arranged in the battery pack, the batteries of different types are complementary in the aspects of capacity, thermal stability and the like, the performance of the battery pack is optimized, adjacent batteries of the same type in the battery pack are connected through bus bars, but the bus bars for connecting the batteries of different types are overlapped, isolation measures are required to be arranged between the bus bars, so that the connection of the bus bars and the batteries is complicated, and the assembly of the battery pack is not facilitated.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery pack, isolation measures are not required to be arranged between the bus bars, and the connection convenience of the bus bars and the batteries is high.
The utility model also provides a battery pack with the battery pack.
A battery pack according to an embodiment of the first aspect of the present utility model includes:
the first battery unit comprises at least one first single battery, and the first single battery is provided with two first poles arranged along a first direction;
the second battery unit comprises at least one second single battery, the first single battery and the second single battery are batteries of different chemical systems, the second single battery is provided with two second poles arranged along a first direction, and the first battery unit and the second battery unit are alternately arranged;
a first busbar connected to the first post of the adjacent first unit cell;
a second busbar connected to the second post of the adjacent second unit cell;
the first electrode post and the second electrode post are arranged on the same side, and the first bus bar and the second bus bar are staggered in the first direction.
The battery pack according to the embodiment of the utility model has at least the following beneficial effects:
according to the utility model, the first bus bar and the second bus bar are staggered in the first direction, and an overlapping area is not formed between the first bus bar and the second bus bar, so that isolation measures are not required, the first bus bar and the second bus bar can be directly arranged on the pole, the installation flow of the battery pack is simplified, and the assembly efficiency of the battery pack is improved.
According to some embodiments of the utility model, the first cells in the first cell are connected by the first bus bar to form a first voltage loop, and the second cells in the second cell are connected by the second bus bar to form a second voltage loop.
According to some embodiments of the utility model, the first battery cells and the second battery cells are alternately arranged along a second direction, and projections of the first pole and the second pole along the second direction are staggered from each other in the first direction.
According to some embodiments of the utility model, the connection location of the first bus bar to the first pole and the connection location of the second bus bar to the second pole are coplanar.
According to some embodiments of the utility model, the first unit cell includes a first cell portion, two first electrode posts are connected to the first cell portion, the second unit cell includes a second cell portion, two second electrode posts are connected to the second cell portion, and projection areas of the first cell portion and the second cell portion along the second direction are identical and overlap each other.
According to some embodiments of the utility model, the first unit cell includes a first cell portion to which two first electrode posts are connected, the second unit cell includes a second cell portion to which two second electrode posts are connected, and the first cell portion and the second cell portion have the same projected area formed along the second direction and partially overlap;
the battery pack further comprises a plurality of compensation blocks, and the compensation blocks are arranged between the adjacent first battery units and between the adjacent second battery units.
According to some embodiments of the utility model, the first unit cell includes a first cell portion, two of the first posts are connected to the first cell portion, the second unit cell includes a second cell portion, two of the second posts are connected to the second cell portion, and a projected area of the first cell portion along the second direction is larger than a projected area of the second cell portion along the second direction.
According to some embodiments of the utility model, the battery pack further comprises a plurality of compensation blocks located between the adjacent first battery cells.
According to some embodiments of the utility model, the first battery cells and the second battery cells are arranged along the second direction to form a battery cell group, the battery cell group is arranged along the first direction in plurality, the first battery cells and the second battery cells are adjacently arranged along the first direction in adjacent battery cell groups, and the first battery cell part in one battery cell group is located between the adjacent first battery cells in the other battery cell group.
According to some embodiments of the present utility model, the first busbar includes a first avoidance portion and two first connection portions respectively connected to two ends of the first avoidance portion, the first connection portions are disposed on side portions of the first avoidance portion in a protruding manner along the first direction, and the two first connection portions are respectively connected to the first posts of the adjacent first single batteries;
the second busbar comprises a second avoidance part and two second connecting parts which are respectively connected to two ends of the second avoidance part, the second connecting parts are arranged on the side parts of the second avoidance part in a protruding mode along the first direction, and the two second connecting parts are respectively connected with the second poles of the adjacent second single batteries;
wherein the protruding direction of the first connecting portion is opposite to that of the second connecting portion.
According to some embodiments of the utility model, the first battery cells and the second battery cells are alternately arranged along a second direction, and the projections formed by the first pole and the second pole along the second direction coincide.
According to some embodiments of the utility model, the battery pack further comprises a separation plate, wherein a first limit structure and a second limit structure are arranged on the separation plate, at least part of the first bus bars are limited to the first limit structure, and at least part of the second bus bars are limited to the second limit structure.
A battery pack according to an embodiment of the second aspect of the present utility model includes:
the box body comprises:
the battery pack of the embodiment of the first aspect is accommodated in the box body.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of a battery pack according to an embodiment of the present utility model;
FIG. 2 is a top view of the battery pack of FIG. 1;
FIG. 3 is a schematic diagram illustrating an arrangement of one embodiment of a first bus and a second bus;
FIG. 4 is a schematic layout diagram of another embodiment of the first bus bar and the second bus bar;
FIG. 5 is a schematic diagram illustrating an arrangement of a first battery cell and a second battery cell according to one embodiment;
FIG. 6 is a schematic layout diagram of another embodiment of the first and second battery units;
FIG. 7 is a schematic layout of one embodiment of a battery cell stack;
FIG. 8 is a schematic diagram illustrating an embodiment of a first bus bar and a second bus bar;
FIG. 9 is an enlarged view of FIG. 8 at C;
FIG. 10 is a schematic view of an embodiment of a separator plate;
fig. 11 is a schematic view of an embodiment of a battery pack of the present utility model.
Reference numerals:
the battery pack 100, the first battery cell 110, the first single battery 111, the first pole 112, the first battery cell 113, the second battery cell 120, the second single battery 121, the second pole 122, the second battery cell 123, the first bus bar 130, the first avoidance portion 131, the first connection portion 132, the second bus bar 140, the second avoidance portion 141, the second connection portion 142, the battery cell pack 150, the compensation block 160, the partition plate 170, the first limit structure 171, the second limit structure 172; and a case 200.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the prior art, when batteries of different chemical systems are arranged in the battery pack, the bus bars for connecting the batteries of different types are overlapped, so that electrical isolation is realized by arranging isolation measures between the bus bars, the connection between the bus bars and the batteries is complicated, and the assembly efficiency of the battery pack is greatly affected. Based on the above, referring to fig. 1 and 2, in an embodiment of the utility model, a battery pack 100 is provided, which includes a first battery unit 110 and a second battery unit 120, the first battery unit 110 includes at least one first single cell 111, the second battery unit 120 includes at least one second single cell 121, the first single cell 111 and the second single cell 121 are cells of different chemical systems, and the first battery unit 110 and the second battery unit 120 are alternately arranged; the battery pack 100 further includes a first bus bar 130 and a second bus bar 140, wherein the first bus bar 130 is used for connecting adjacent first single cells 111 in the first battery unit 110, and the second bus bar 140 is used for connecting adjacent second single cells 121 in the second battery unit 120.
In general, the battery pack is electrically connected to different single batteries through connection between the bus bar and the pole, in this embodiment, the first single battery 111 has two first pole posts 112 arranged along the first direction, the second single battery 121 has two second pole posts 122 arranged along the first direction, the single battery generally has a large surface, a small surface, a top surface and a bottom surface, in this embodiment, the first pole posts 112 and the second pole posts 122 are disposed on the same side of the battery pack 100, i.e., the disposed planes of the first pole posts 112 and the second pole posts 122 on the single battery are the same, e.g., the first pole posts 112 are located on the top surface of the first single battery 111, while the second pole posts 122 are located on the top surface of the second single battery 121, or the first pole posts 112 are located on the small surface on one side of the first single battery 111, while the second pole posts 122 are located on the small surface on the same side of the second single battery 121, so, after the first battery cells 110 and the second battery cells 120 are alternately arranged to form the battery pack 100, the first pole posts 112 and the first pole posts 122 are located on the same side of the battery pack 100, e.g., the first pole posts 112 and the first pole posts 122 are located on the same side of the bus bar 100, or the top of the first pole posts 140 and the first pole posts 140 are located on the side of the bus bar 100.
Since the first battery cells 110 and the second battery cells 120 are alternately arranged, when the first bus bar 130 connects the first poles 112 of the first unit cells 111 in the two first battery cells 110, the second battery cells 120 are required to be straddled between the two first battery cells 110, and the second bus bar 140 connected to the second poles 122 of the second unit cells 121 in the second battery cells 120 is easy to overlap with the first bus bar 130; in this embodiment, the first bus bar 130 and the second bus bar 140 are staggered in the first direction, and the two first electrode posts 112 and the two second electrode posts 122 are distributed along the first direction, that is, the first bus bar 130 and the second bus bar 140 are staggered in the plane where the first electrode posts 112 and the second electrode posts 122 are located, and there is no overlapping area therebetween, that is, no isolation measure is required, the first bus bar 130 and the second bus bar 140 can be directly mounted on the electrode posts, so that the mounting process of the battery pack is simplified, and the assembly efficiency of the battery pack is improved.
In fig. 1 and 2, the first battery unit 110 includes one first single battery 111, and the second battery unit 120 includes one second single battery 121, which is illustrated as an example, however, a plurality of first single batteries 111 may be disposed in the first battery unit 110, and a plurality of second single batteries 121 may be disposed in the second battery unit 120. In addition, in fig. 1 and 2, the first pole 112 and the second pole 122 are disposed on the top of the battery pack 100, and in other embodiments, the first pole 112 and the second pole 122 may be disposed on the side of the battery pack 100 at the same time.
It should be noted that, in the battery pack 100 of the present utility model, two types of batteries with different chemical systems are disposed in the battery pack, and the two types of batteries are connected to form a mutually independent loop, specifically, a first single battery 111 in a first battery unit 110 is connected to form a first voltage loop through a first bus 130, a second single battery 121 in a second battery unit 120 is connected to form a second voltage loop through a second bus 140, and because the first voltage loop and the second voltage loop are mutually independent, both voltage loops can be electrically connected with the anode and the cathode in the battery pack, when one of the voltage loops fails, the other voltage loop can still work normally and provide power output for the electric automobile, so as to prevent the situation of power loss, and if the failed loop has thermal runaway, the other voltage loop can provide power for the cooling system of the whole automobile and inhibit the thermal runaway, so as to reduce the risk of thermal runaway; in addition, compared with the situation that only one voltage loop exists in the battery pack, each single battery takes part in charge and discharge at all times, the battery pack 100 is internally provided with two independent voltage loops, and the two voltage loops can selectively work, so that the attenuation of the single battery can be reduced, and the service life of the battery pack 100 can be prolonged.
As a specific embodiment in which the first bus bar 130 and the second bus bar 140 are staggered with each other, as shown in fig. 1 and 2, the first battery cells 110 and the second battery cells 120 are alternately arranged along the second direction, and the projections formed by the first pole 112 and the second pole 122 along the second direction are staggered with each other in the first direction, that is, the projections formed by the first pole 112 and the second pole 122 along the second direction are spaced apart from each other in the first direction. Taking the connection of the first bus bar 130 as an example, when the first bus bar 130 is connected to the first poles 112 in the two first battery units 110 located at two sides of the second battery unit 120, the first bus bar 130 is linear, two ends of the first bus bar are connected to the first poles 112 of the two first unit batteries 111, and the second pole 122 is located at a side portion of the first bus bar 130, so that after the second bus bar 140 is connected to the second pole 122, the first bus bar 130 and the second bus bar 140 are distributed at intervals in the first direction, and no overlapping area exists between the first bus bar and the second bus bar.
In general, two poles on a single cell are distributed in a width direction, a plurality of single cells are arranged in a thickness direction thereof in a cell pack, in an embodiment of the present utility model, first battery cells 110 and second battery cells 120 are alternately arranged in a second direction, the first direction is set to be a width direction of a first single cell 111 or a second single cell 121, the second direction is set to be a thickness direction of the first single cell 111 or the second single cell 121, and a plurality of first single cells 111 in the first battery cells 110, and a plurality of second single cells 121 in the second battery cells 120 are also arranged in the second direction; as such, the first poles 112 of the first unit cells 111 in the different first battery cells 110 are collinear in the second direction, the second poles 122 of the second unit cells 121 in the different second battery cells 120 are collinear in the second direction, so that the first bus bar 130 is connected to the different first battery cells 110, and the second bus bar 140 is connected to the different second battery cells 120.
As a further improvement of the first electrode post 112 and the second electrode post 122 which are staggered in the first direction, the first single battery 111 includes a first electric core 113, two first electrode posts 112 are connected to the first electric core 113, the second single battery 121 includes a second electric core 123, two second electrode posts 122 are connected to the second electric core 123, the widths and heights of the first electric core 113 and the second electric core 123 are consistent, so that the projection areas formed by the first electric core 113 and the second electric core 123 along the second direction are the same and mutually overlapped, after the first electric battery 110 and the second electric battery 120 are alternately arranged along the second direction, the side walls, the bottom walls and the top walls of the adjacent first electric battery 110 and the second electric battery 120 are kept flush, and the surfaces of the battery unit group 150 formed by the arrangement of the first electric core 113 and the second electric core 123 are relatively flat.
With the opposite sides of the two opposite sidewalls of the cell width direction as the inner side and the opposite sides as the outer side, if the projected areas of the first and second battery cores 113 and 123 formed along the second direction are the same and overlap each other, the projections of the two first poles 112 of the first cell 111 formed along the second direction may be located both inside the projections of the two second poles 122 of the second cell 121 formed along the second direction (as shown in fig. 3), or both outside the projections of the two second poles 122 of the second cell 121 formed along the second direction (as shown in fig. 1), or one of the projections of the first pole 112 formed along the second direction is located between the projections of the two second poles 122 formed along the second direction, and the projections of the other first pole 112 formed along the second direction are located both outside the projections of the second pole 122 formed along the second direction (as shown in fig. 4), so that the projections of the first pole 112 and the second pole 122 formed along the second direction may be mutually offset in the first direction.
As another modification of the projection of the first and second posts 112, 122 in the second direction being offset from each other in the first direction, as shown in fig. 5, the projection areas of the first and second electric core portions 113, 123 in the second direction are the same and partially overlap; in this embodiment, the first battery cells 110 and the second battery cells 120 are offset in the first direction, and the offset refers to that a part of the first battery cells 110 protrude in the first direction compared to the second battery cells 120, a part of the second battery cells 120 protrude in the first direction compared to the first band-shaped inner battery cells 110, and after the first battery cells 110 and the second battery cells 120 are alternately arranged along the second direction to form the battery cell group 150, protruding and recessed areas exist in the first direction in the battery cell group 150, so that the projections formed by the first pole 112 and the second pole 122 along the second direction are offset in the first direction.
It should be noted that, since the first battery units 110 and the second battery units 120 are distributed in a staggered manner in the first direction, and gaps exist between the adjacent first battery units 110 and between the adjacent second battery units 120 in the second direction, in order to ensure that the battery units are stably mounted in the battery pack and avoid position deviation, in this embodiment, the battery pack 100 further includes a plurality of compensation blocks 160, the compensation blocks 160 are located between the adjacent first battery units 110 and between the adjacent second battery units 120, and the compensation blocks 160 fill the gaps between the adjacent first battery units 110 and between the adjacent second battery units 120 and limit the first battery units 110 and the second battery units 120, so that the first battery units 110 and the second battery units 120 maintain stable positions in the battery pack.
In addition, in the case that the first battery cell 110 and the second battery cell 120 are arranged in a staggered manner in the first direction, the distance between the two first poles 112 on the same first single battery cell 111 and the distance between the two second poles 122 on the same second single battery cell 121 are equal, so that when the battery pack is assembled, the first poles 112 and the second poles 122 are staggered with each other in the first direction by a certain distance in the width direction, and the assembly of the battery pack is more convenient.
As a further modification in which projections of the first and second poles 112, 122 formed in the second direction are staggered with each other in the first direction, as shown in fig. 6, the first and second battery cells 110, 120 are alternately arranged in the second direction, and a projection area of the first battery cell portion 113 formed in the second direction is larger than a projection area of the second battery cell portion 123 formed in the second direction; unlike the above improvement, in the present embodiment, the widths of the first and second battery cells 113 and 123 are not consistent, and the width of the first single battery cell 111 is greater than the width of the second single battery cell 121, so that the first pole 112 has a wider arrangement space in the first direction than the second pole 122; thus, in this case, the projections formed by the two first poles 112 of the first unit cell 111 along the second direction may be located outside the projections formed by the two second poles 122 of the second unit cell 121 along the second direction, or the projections formed by one first pole 112 along the second direction may be located between the projections formed by the two second poles 122 along the second direction, and the projections formed by the other first pole 112 along the second direction may be located outside the projections formed by the second poles 122 along the second direction, so that the projections formed by the first pole 112 and the second pole 122 along the second direction may be offset from each other in the first direction.
It should be noted that, when the width of the first unit cell 111 is greater than the width of the second unit cell 121, after the first unit cells 110 and the second unit cells 120 are alternately arranged along the second direction, the first unit cells 110 protrude from the side of the second unit cells 120 in the width direction, so that a gap exists between adjacent first unit cells 110; based on this, in the embodiment, the compensation block 160 is disposed in the battery pack 100, the compensation block 160 is filled in the gap between the adjacent first battery units 110, and in the first direction, the side wall of the compensation block 160 is flush with the side wall of the second battery unit 120, and the compensation block 160 limits the first battery unit 110, so that the positions of the first battery unit 110 and the second battery unit 120 are more stable. Further, the compensation block 160 may be arranged at one side of the second battery cell 120 in the first direction, or the compensation block 160 may be arranged at both opposite sides of the second battery cell 120.
The present utility model further provides another gap filling manner, specifically, as shown in fig. 7, the first unit cells 111 and the second unit cells 121 are arranged along the second direction to form a battery cell group 150, and the battery cell group 150 is arranged along the first direction in a plurality of adjacent battery cell groups 150, where the first battery cells 110 and the second battery cells 120 are arranged adjacent along the first direction, and a portion of the first battery cells 110 in one battery cell group 150 is located between adjacent first battery cells 110 in another battery cell group 150. Because each battery unit group 150 has protruding and recessed areas in the first direction, when the battery unit groups 150 are arranged along the second direction, the recessed areas of the battery unit groups 150 are opposite to the protruding areas of the adjacent battery unit groups 150, and the filling of gaps between the adjacent first battery units 110 is realized by utilizing the self structure of the battery unit groups 150, so that a compensation block is not required to be arranged in the battery pack, and the utilization rate of the space in the battery pack and the energy density of the battery pack can be improved.
As another specific embodiment of the first bus bar 130 and the second bus bar 140 that are staggered with each other, the structure of the bus bar is improved to realize the mutual avoidance of the first bus bar 130 and the second bus bar 140 in the first direction, specifically, referring to fig. 8 and 9, the first bus bar 130 includes a first avoidance portion 131 and two first connection portions 132 connected to two ends of the first avoidance portion 131 respectively, the first connection portions 132 are arranged on the side portions of the first avoidance portion 131 in a protruding manner in the first direction, the two first connection portions 132 are connected to the first posts 112 of the adjacent first single batteries 111 respectively, the second bus bar 140 includes a second avoidance portion 141 and two second connection portions 142 connected to two ends of the second avoidance portion 141 respectively, the second connection portions 142 are arranged on the side portions of the second avoidance portion 141 in a protruding manner in the first direction, the two second connection portions 142 are connected to the second posts 122 of the adjacent second single batteries 121, and the protruding direction of the first connection portions 132 is opposite to the protruding direction of the second connection portions 142.
In this embodiment, the first bus bar 130 and the second bus bar 140 are both configured to have a structure similar to a "U", the first connection portion 132 of the first bus bar 130 is located between the two second connection portions 142 of the second bus bar 140, and the protruding directions of the first connection portion 132 and the second connection portion 142 are opposite, so that the first avoiding portion 131 avoids the second connection portion 142, and the second avoiding portion 141 avoids the first connection portion 132, so that the first bus bar 130 and the second bus bar 140 are staggered in the first direction.
It should be noted that, in this embodiment, the position of the first pole 112 in the first single cell 111 or the position of the second pole 122 in the second single cell 121 is not required to be changed, and the first single cell 111 and the second single cell 121 with the corresponding widths and lengths are not required to be selected, so that the requirement for improving the structure of the single cells is low, and the bus bars can be staggered in the first direction after being connected to the poles, which is beneficial to reducing the production cost of the battery pack.
In addition, in the present embodiment, the first connection portion 132 and the second connection portion 142 are disposed opposite to each other in the first direction, so that the distance between the first avoiding portion 131 and the second avoiding portion 141 is large, and a large installation space can be provided for the bus bar.
It should be noted that the present embodiment is applicable to a case where the projections formed by the first pole 112 and the second pole 122 along the second direction overlap. Specifically, as shown in fig. 8, when the first battery cells 110 and the second battery cells 120 are alternately arranged along the second direction, the projections formed by the first pole 112 and the second pole 122 along the second direction coincide; since the first bus bar 130 and the second bus bar 140 are kept away from each other in the first direction in the present embodiment, there is no overlap therebetween, and thus electrical isolation can be achieved. In this case, the first unit cell 111 and the second unit cell 121 may be of the same specification, after the first unit cell 110 and the second unit cell 120 are arranged to form the unit cell group 150, the unit cell group 150 has a smoother appearance, and no need to change the structure of the unit cell or add a compensation block in the battery pack, so that the unit cell is convenient to select, and the battery pack is more convenient to assemble.
In one embodiment of the present utility model, the connection location of the first bus bar 130 to the first pole 112 and the connection location of the second bus bar 140 to the second pole 122 are coplanar; after the first bus bar 130 is connected to the first pole 112, the height of the connection position of the first bus bar 130 and the second bus bar 140 is denoted as a, and after the second bus bar 140 is connected to the second pole 122, the height of the connection position of the second bus bar and the first bus bar is denoted as B, and when the points a and B are coplanar, the first bus bar 130 and the second bus bar 140 are located at the same height, so that the surface of the battery pack 100 can be more flat, and the electrical isolation board 170 is convenient to limit the first bus bar 130 and the second bus bar 140 at the same time.
Referring to fig. 10 (for clarity, the separator of one of the battery cell groups is hidden in fig. 10, and the bus bar of the other battery cell group is hidden), the battery pack 100 further includes a separator 170, a first limiting structure 171 and a second limiting structure 172 are disposed on the separator 170, the separator 170 is disposed between the first single cell 111 and the first bus bar 130, and between the second single cell 121 and the second bus bar 140, for electrically isolating the single cell from the bus bar except for a post, at least part of the first bus bar 130 is limited to the first limiting structure 171, and at least part of the second bus bar 140 is limited to the second limiting structure 172; the limiting structure is used for limiting the busbar, so that the busbar and the pole are positioned and connected conveniently. The first limiting structure 171 and the second limiting structure 172 may be protrusions protruding from the partition board 170, or recesses recessed from the surface of the partition board 170, in one embodiment of the present utility model, the first limiting structure 171 and the second limiting structure 172 are both grooves, the partition board 170 is provided with a through hole for passing through a pole, the through hole is communicated with the groove, and the first bus bar 130 or the second bus bar 140 is embedded in the groove to be connected with the pole passing through the through hole.
It should be noted that, when the first bus bar 130 and the second bus bar 140 are located at the same height, the first limiting structure 171 and the second limiting structure 172 on the isolation board 170 may be set to the same depth, thereby simplifying the structure of the isolation board 170 and facilitating the processing of the isolation board 170.
The utility model also provides a battery pack, referring to fig. 11, the battery pack includes a case 200 and the battery pack 100, the battery pack 100 is accommodated in the case 200, and the case 200 mounts and fixes the battery pack 100 and protects the battery pack 100.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
Claims (13)
1. A battery pack, comprising:
the first battery unit comprises at least one first single battery, and the first single battery is provided with two first poles arranged along a first direction;
the second battery unit comprises at least one second single battery, the first single battery and the second single battery are batteries of different chemical systems, the second single battery is provided with two second poles arranged along a first direction, and the first battery unit and the second battery unit are alternately arranged;
a first busbar connected to the first post of the adjacent first unit cell;
a second busbar connected to the second post of the adjacent second unit cell;
the first electrode post and the second electrode post are arranged on the same side, and the first bus bar and the second bus bar are staggered in the first direction.
2. The battery pack of claim 1, wherein the first cells in the first cell are connected by the first bus bar to form a first voltage loop and the second cells in the second cell are connected by the second bus bar to form a second voltage loop.
3. The battery pack according to claim 1 or 2, wherein the first battery cells and the second battery cells are alternately arranged in a second direction, and projections of the first pole and the second pole formed in the second direction are offset from each other in the first direction.
4. The battery according to claim 1 or 2, wherein the connection position of the first bus bar to the first pole and the connection position of the second bus bar to the second pole are coplanar.
5. The battery pack according to claim 3, wherein the first unit cell includes a first cell portion to which two of the first electrode posts are connected, the second unit cell includes a second cell portion to which two of the second electrode posts are connected, and projection areas of the first cell portion and the second cell portion formed in the second direction are identical and overlap each other.
6. The battery pack according to claim 3, wherein the first unit cell includes a first cell portion to which two of the first electrode posts are connected, the second unit cell includes a second cell portion to which two of the second electrode posts are connected, and projection areas of the first cell portion and the second cell portion formed in the second direction are the same and partially overlap;
the battery pack further comprises a plurality of compensation blocks, and the compensation blocks are arranged between the adjacent first battery units and between the adjacent second battery units.
7. The battery pack according to claim 3, wherein the first unit cell includes a first cell portion to which two of the first electrode posts are connected, the second unit cell includes a second cell portion to which two of the second electrode posts are connected, and a projected area of the first cell portion along the second direction is larger than a projected area of the second cell portion along the second direction.
8. The battery pack of claim 7, further comprising a plurality of compensation blocks located between the adjacent first battery cells.
9. The battery pack according to claim 7, wherein the first battery cells and the second battery cells are arranged in the second direction to form a battery cell group, the battery cell group is arranged in the first direction in plurality, adjacent battery cell groups in which the first battery cells and the second battery cells are arranged adjacent in the first direction, and the first battery cell portion in one battery cell group is located between adjacent first battery cells in the other battery cell group.
10. The battery pack according to claim 1 or 2, wherein the first busbar comprises a first avoiding portion and two first connecting portions respectively connected to two ends of the first avoiding portion, the first connecting portions are arranged on side portions of the first avoiding portion in a protruding manner along the first direction, and the two first connecting portions are respectively connected with the first posts of the adjacent first single batteries;
the second busbar comprises a second avoidance part and two second connecting parts which are respectively connected to two ends of the second avoidance part, the second connecting parts are arranged on the side parts of the second avoidance part in a protruding mode along the first direction, and the two second connecting parts are respectively connected with the second poles of the adjacent second single batteries;
wherein the protruding direction of the first connecting portion is opposite to that of the second connecting portion.
11. The battery of claim 10, wherein the first cells and the second cells are alternately arranged along a second direction, and wherein the first posts and the second posts overlap in a projection formed along the second direction.
12. The battery pack according to claim 1 or 2, further comprising a separator plate, wherein a first limit structure and a second limit structure are provided on the separator plate, at least part of the first bus bars are limited to the first limit structure, and at least part of the second bus bars are limited to the second limit structure.
13. A battery pack, comprising:
the box body comprises:
the battery pack of any one of claims 1 to 12, housed within the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320028097.1U CN219534795U (en) | 2023-01-06 | 2023-01-06 | Battery pack and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320028097.1U CN219534795U (en) | 2023-01-06 | 2023-01-06 | Battery pack and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219534795U true CN219534795U (en) | 2023-08-15 |
Family
ID=87628315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320028097.1U Active CN219534795U (en) | 2023-01-06 | 2023-01-06 | Battery pack and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219534795U (en) |
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2023
- 2023-01-06 CN CN202320028097.1U patent/CN219534795U/en active Active
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Address after: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |