CN216054952U - Battery pack and electric equipment - Google Patents
Battery pack and electric equipment Download PDFInfo
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- CN216054952U CN216054952U CN202122483673.5U CN202122483673U CN216054952U CN 216054952 U CN216054952 U CN 216054952U CN 202122483673 U CN202122483673 U CN 202122483673U CN 216054952 U CN216054952 U CN 216054952U
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- battery pack
- circuit board
- side wall
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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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Abstract
The application discloses battery package and consumer, battery package include battery package casing, electric core module, circuit board, first structural component and first insulating part. The battery pack shell comprises an accommodating space, the battery module comprises a plurality of battery cores stacked along a first direction, and the battery cores are electrically connected to the circuit board. The first structural member is arranged in the accommodating space and arranged between the battery cell module and the battery pack shell along a first direction. The first insulating part is arranged in the accommodating space and is connected with the battery cell module, the first structural member and the battery pack shell, and the first insulating part is formed by arranging insulating resin in the accommodating space and then curing the insulating resin. Along the first direction, the projection of the circuit board and the projection of the first structural member are separated. The battery pack is fixed on the battery pack shell stably, the number of components covered by the first insulating part on the circuit board is reduced, and the influence of the first insulating part on the components is reduced.
Description
Technical Field
The application belongs to the technical field of batteries, and particularly relates to a battery pack and electric equipment.
Background
At present, when an internal circuit board is fixed by an existing battery pack, glue is generally directly filled into a battery pack shell, so that the circuit board is wrapped by the glue to be fixed. The fixing mode leads the colloid to cover all the components on the circuit board, and the possibility of damaging the components can be increased in the using process.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a battery pack and an electric device, which can reduce the influence of the filled gel on the components on the circuit board.
The embodiment of the application provides a battery pack, including battery pack casing, electric core module, circuit board, first structural component and first insulating part. The battery pack shell comprises an accommodating space, the battery module comprises a plurality of battery cells stacked along a first direction, and the battery cells are electrically connected to the circuit board. The first structural member is arranged in the accommodating space, and the first structural member is arranged between the battery cell module and the battery pack shell along the first direction. The first insulating piece is arranged in the accommodating space, the first insulating piece is connected with the battery cell module, the first structural member and the battery pack shell, and the first insulating piece is formed by arranging insulating resin in the accommodating space and then curing the insulating resin. Along the first direction, the projection of the circuit board is separated from the projection of the first structural member. The accommodating space is arranged with electric core module and first structural member to the aforesaid battery pack, and the solidification forms first insulating part after pouring insulating resin into accommodating space, with the stable battery pack casing that is fixed in of electric core module, reduces the quantity that components and parts are covered by first insulating part on the circuit board, reduces the influence of first insulating part to components and parts.
In some embodiments of the present application, the battery pack case includes a bottom wall, the circuit board is opposite to the bottom wall in a second direction perpendicular to the first direction, and the receiving space is provided between the circuit board and the bottom wall. The height of the first structural member is not less than the height of the first insulating member in the second direction. The height of the first structural member is not less than that of the first insulating part, and the first structural member is matched with the battery pack shell to limit the first insulating part in a limited space, so that the space utilization rate of the battery pack is improved.
In some embodiments of the present application, the battery pack further includes a first potting portion, and the first potting portion communicates with the accommodating space. Along the first direction, the projection of the first glue filling part is positioned between the projection of the first structural member and the projection of the circuit board. The battery pack can be horizontally placed, and insulating resin is poured into the accommodating space through the first glue pouring part so as to fix the battery cell module; the first glue filling part is positioned below the circuit board, so that the first insulating part can be prevented from covering one side of the circuit board deviating from the accommodating space, and the influence of the first insulating part on components on the circuit board is reduced.
In some embodiments of the present application, there is a gap between the first structural member and the circuit board in the second direction, and the first potting portion includes a gap along which a projection of the circuit board and a projection of the first structural member overlap.
In some embodiments of the present application, the battery pack case further includes a first side wall and a second side wall, and the first side wall and the second side wall are respectively located at two opposite sides of the cell module along a third direction perpendicular to the first direction. The first side wall and/or the second side wall are/is provided with a first concave part which extends along the first direction. The battery pack further comprises a second structural part, the second structural part is provided with a first convex part and a second concave part, and the first convex part is accommodated in the first concave part. The end part of the circuit board along the third direction is provided with a second convex part, and the second convex part is accommodated in the second concave part. The circuit board is connected to the battery pack shell through the second structural part, and the battery pack shell is simple and reliable in structure and high in stability.
In some embodiments of the present application, the battery pack further includes a first adhesive member connecting the second convex part and the second concave part. The first bonding piece is connected with the second convex part and the second concave part, the circuit board is stably connected with the second structural piece, and the circuit board bonding structure is simple and reliable in structure and high in stability.
In some embodiments of the present application, the second structural member includes a third protrusion and a fourth protrusion. The third convex part is arranged at the end part of the second structural part along the first direction, and the fourth convex part is arranged at the end part of the second structural part along the first direction, which is far away from the third convex part. One of the third convex portion and the fourth convex portion abuts against one end of the first concave portion in the first direction, and the other of the third convex portion and the fourth convex portion abuts against the other end of the first concave portion opposite to the first direction. The third convex part and the fourth convex part are respectively abutted to two ends of the first concave part along the first direction, so that the second structural part is stably connected to the battery pack shell, the structure is simple and reliable, and the stability is high.
In some embodiments of the present application, the battery pack case further includes a first sidewall and a second sidewall, and the first sidewall and the second sidewall are opposite and respectively located at two sides of the cell module along a third direction perpendicular to the first direction and the second direction. The first side wall and/or the second side wall are/is provided with a first concave part which extends along the first direction. The end part of the circuit board along the third direction is provided with a second convex part, and the second convex part is accommodated in the first concave part.
In some embodiments of the present application, the battery pack further includes a second adhesive member connecting the second protrusion and the first recess. The second bonding piece is connected with the second convex part and the first concave part of the circuit board, so that the circuit board is stably connected with the shell of the battery pack, and the space utilization rate of the battery pack is improved.
In some embodiments of the present application, the battery pack case further includes a third sidewall and a fourth sidewall, where the third sidewall and the fourth sidewall are both connected to the first sidewall and the second sidewall, and the third sidewall and the fourth sidewall are respectively located at two sides of the cell module along the first direction. Along the first direction, the third side wall is abutted against one end of the circuit board, and the fourth side wall is abutted against the other opposite end of the circuit board. The circuit board is connected to the shell of the battery pack stably through the third side wall and the fourth side wall in a butting mode, the structure is simple and reliable, and the space utilization rate of the battery pack is improved.
In some embodiments of the present application, the first insulating member is connected to a side of the circuit board close to the accommodating space, so that the circuit board is not only fixed, but also the influence on the component on the side of the circuit board away from the accommodating space can be reduced.
The embodiment of the application also provides electric equipment which comprises an equipment main body and the battery pack, wherein the battery pack is installed on the equipment main body.
Drawings
Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present application.
Fig. 2 is an exploded view of a portion of the battery pack of fig. 1.
Fig. 3 is a schematic sectional view a-a of the battery pack of fig. 1.
Fig. 4 is an exploded view of a portion of the battery pack of fig. 1.
Fig. 5 is a schematic cross-sectional view B-B of the battery pack of fig. 1.
Fig. 6 is a schematic perspective view of a battery cell in an embodiment of the present application.
Fig. 7 is a front view of a battery pack in an embodiment of the present application.
Fig. 8 is a partial structural view of a section C-C of the battery pack of fig. 1.
Fig. 9 is a perspective view of a second structural member in an embodiment of the present application.
Fig. 10 is a partial structural view of a section D-D of the battery pack of fig. 1.
Fig. 11 is a partial structural schematic diagram of a battery pack in another embodiment of the present application.
Fig. 12 is an exploded view of a portion of the battery pack of fig. 11.
Fig. 13 is a view from E-E of the battery pack of fig. 11.
Fig. 14 is a schematic perspective view of a battery pack according to another embodiment of the present application.
Fig. 15 is an exploded view of the battery pack of fig. 14.
Fig. 16 is a schematic cross-sectional view F-F of the battery pack of fig. 14.
Fig. 17 is a partial structural schematic view of a battery pack in another embodiment of the present application.
Fig. 18 is a schematic exploded view of the battery pack of fig. 17.
Fig. 19 is a schematic G-G cross-sectional view of the battery pack of fig. 17.
Description of the main elements
First concave portion 111
Fourth concave portion 131
Fifth concave portion 141
Receiving space 17
Third structural member 22
Fourth structural part 23
Second convex portion 31
First structural member 41
Second structural member 42
First convex part 421
Third convex part 422
Fourth convex part 423
First insulating member 5
First potting part 71
Height H1 of first structural member
Height H2 of first insulator
Height H3 of first portion
First direction X
Third direction Y
Second direction Z
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "vertical" is used to describe an ideal condition between two components. In a state of actual production or use, a state of approximately vertical may exist between the two components. For example, in combination with numerical descriptions, vertical may refer to an angle between two straight lines ranging from 90 ± 10 °, vertical may also refer to a dihedral angle between two planes ranging from 90 ± 10 °, and vertical may also refer to an angle between a straight line and a plane ranging from 90 ± 10 °. Two components described as "perpendicular" may not be absolutely straight, planar, or may be substantially straight or planar, and a component may be considered "straight" or "planar" when viewed macroscopically as if the overall direction of extension were straight or planar.
The embodiment of the application provides a battery pack, including battery pack casing, electric core module, circuit board, first structural component and first insulating part. The battery pack shell comprises an accommodating space, the battery module comprises a plurality of battery cells stacked along a first direction, and the battery cells are electrically connected to the circuit board. The first structural member is arranged in the accommodating space, and the first structural member is arranged between the battery cell module and the battery pack shell along the first direction. The first insulating piece is arranged in the accommodating space, the first insulating piece is connected with the battery cell module, the first structural member and the battery pack shell, and the first insulating piece is formed by arranging insulating resin in the accommodating space and then curing the insulating resin. Along the first direction, the projection of the circuit board is separated from the projection of the first structural member.
The accommodating space is arranged with electric core module and first structural member to the aforesaid battery pack, and the solidification forms first insulating part after pouring insulating resin into accommodating space, with the stable battery pack casing that is fixed in of electric core module, reduces the quantity that components and parts are covered by first insulating part on the circuit board, reduces the influence of first insulating part to components and parts.
The embodiment of the application also provides electric equipment which comprises an equipment main body and the battery pack, wherein the battery pack is installed on the equipment main body.
Embodiments of the present application will be further described with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, and 4, an embodiment of the present application provides a battery pack 100 including a battery pack case 1, a cell module 2, a circuit board 3, a first structural member 41, and a first insulating member 5. The battery cell module 2, the circuit board 3, the first structural member 41 and the first insulating member 5 are all disposed in the battery pack case 1. The battery cell module 2 includes a plurality of battery cells 21 stacked along the first direction X, and the plurality of battery cells 21 are electrically connected together in series and/or in parallel. Along first direction X, first structural member 41 is disposed between cell module 2 and battery pack case 1, and is connected to cell module 2. The circuit board 3 is arranged on one side of the battery cell module 2 and is electrically connected with the battery cell module 2.
The battery pack case 1 includes a first side wall 11, a second side wall 12, a third side wall 13, a fourth side wall 14, a top wall 15, and a bottom wall 16. The first and second sidewalls 11 and 12 are oppositely disposed along a third direction Y perpendicular to the first direction X. The third sidewall 13 and the fourth sidewall 14 are connected to the first sidewall 11 and the second sidewall 12, and the third sidewall 13 and the fourth sidewall 14 are oppositely disposed along the first direction X. The top wall 15 and the bottom wall 16 are connected to the first side wall 11, the second side wall 12, the third side wall 13 and the fourth side wall 14, and the top wall 15 and the bottom wall 16 are oppositely arranged along a second direction Z perpendicular to the first direction X and the third direction Y. The first side wall 11, the second side wall 12, the third side wall 13, the fourth side wall 14, the top wall 15 and the bottom wall 16 enclose a cavity space.
Referring to fig. 2, 3 and 4, the circuit board 3 is disposed on one side of the battery cell module 2 along the second direction Z, and along the third direction Y, one end of the circuit board 3 is connected to the first sidewall 11, and the other end thereof is connected to the second sidewall 12. The circuit board 3 divides the cavity space into an accommodating space 17 and a second space 18 arranged along the second direction Z, in particular, the accommodating space 17 is located between the circuit board 3 and the bottom wall 16, and the second space 18 is located between the circuit board 3 and the top wall 15.
The cell module 2, the first structural member 41, and the first insulating member 5 are disposed in the accommodating space 17, and the first insulating member 5 connects the cell module 2, the first structural member 41, and the battery pack case 1. Along the first direction X, the projection of the circuit board 3 and the projection of the first structural member 41 are separated.
The first insulating member 5 is formed by setting an insulating resin in the housing space 17 and then curing the resin. At least part of the components on the circuit board 3 are arranged on the side, facing the second space 18, of the circuit board 3, so that the number of the components covered by the first insulating part 5 can be reduced, and the influence of the first insulating part 5 on the components is reduced.
Alternatively, the insulating resin includes, but is not limited to, at least one of a phenol resin, a melamine resin, an epoxy resin, a polyester resin, a polyimide resin, a diphenyl ether resin, a silicone resin, and an organic fluorine resin.
Optionally, the insulating resin comprises a potting adhesive.
In some embodiments, the first side wall 11, the second side wall 12, the third side wall 13, the top wall 15 and the bottom wall 16 are integrally formed to form a first housing (not shown) of the battery pack housing 1, the first housing is a barrel-shaped structure with one end open, and the fourth side wall 14 forms a second housing (not shown) of the battery pack housing 1, the second housing is connected to the open end of the first housing 191.
Referring to fig. 2, fig. 3 and fig. 4, in some embodiments, the first side wall 11, the second side wall 12, the top wall 15 and the bottom wall 16 are integrally formed to form a first housing 191 of the battery pack housing 1, and the first housing 191 is a cavity structure with two open ends. The third side wall 13 constitutes a second case 192 of the battery pack case 1, the fourth side wall 14 constitutes a third case 193 of the battery pack case 1, the second case 192 is connected to one open end of the first case 191, and the third case 193 is connected to the other open end of the first case 191. The following description will be made by taking the first housing 191 as an example of a cavity structure with both ends open.
In some embodiments, the number of the first structural members 41 is one, and the first structural members 41 are disposed on a side of the cell module 2 away from the second casing 192. In the third direction Y, one end of the first structural member 41 is connected to the first side wall 11, and the other opposite end of the first structural member 41 is connected to the second side wall 12. Optionally, one end of the first structural member 41 is fixedly connected to the first side wall 11 by a fastener such as a bolt, the other end of the first structural member 41 is fixedly connected to the second side wall 12 by a fastener such as a bolt, and the first structural member 41 and the second casing 192 cooperate to limit the movement of the cell module 2 along the first direction X.
An end of the first structural member 41 away from the circuit board 3 is connected to the bottom wall 16 in the second direction Z. The first structural member 41, the first casing 191, and the second casing 192 restrict the cell module 2 within a limited space.
Pouring insulating resin into the accommodating space 17, forming a first insulating member 5 after the insulating resin is cured, and connecting the cell module 2 and the first shell 191 by the first insulating member 5 to limit the movement of the cell module 2 along the third direction Y and the second direction Z.
As shown in fig. 4 and 5, the battery pack case 1 further includes a first sealing member 6, and the first sealing member 6 is connected to the first structural member 41 and the first case 191, and is used for sealing a connection portion of the first structural member 41 and the first case 191 to limit outflow of the insulating resin from the connection portion of the first structural member 41 and the first case 191 during pouring of the insulating resin. Optionally, the first sealing member 6 is disposed on a side of the first structural member 41 away from the cell module 2.
Optionally, the battery pack 100 further includes a second sealing member (not shown) disposed between the second housing 192 and the first housing 191. One end of the second sealing member contacts and is connected to the first housing 191, the other end of the second sealing member contacts and is connected to the second housing 192, and the second sealing member is in a compressed state such that the second housing 192 is sealingly connected to the first housing 191 to restrict outflow of the insulating resin from the connection of the first housing 191 and the second housing 192 in the process of pouring the insulating resin.
In some embodiments, the first structural member 41 is a plate-shaped structure made of metal.
In some embodiments, the first structural member 41 is a plate-shaped structure made of an insulating material.
In some embodiments, the material of the first sealing element 6 and/or the second sealing element includes, but is not limited to, at least one of fluororubber, nitrile rubber, silicone rubber, ethylene propylene rubber, and viton rubber.
As shown in fig. 6 and 7, the battery cell 21 includes a cell casing 211, an electrode assembly (not shown), and an electrode terminal 212. The electrode assembly is disposed inside the cell case 211, and the electrode terminal 212 is connected to the electrode assembly and led out of the cell case 211.
In some embodiments, the electrode terminals 212 are tabs, including positive and negative tabs.
The cell casing 211 includes a first portion 2111 and a second portion 2112 that are connected to each other. The first portion 2111 is used to house an electrode assembly, the second portion 2112 extends outwardly from the first portion 2111, and the electrode terminal 212 extends out of the cell housing 211 from the second portion 2112.
In the third direction Y, the length of the second portion 2112 is smaller than the length of the first portion 2111, and the end of the first portion 2111 protrudes from the end of the second portion 2112.
Referring to fig. 3, 4 and 5, for convenience of understanding, the battery pack 100 is placed on a horizontal plane, the bottom wall 16 is located below the bottom wall, and the top wall 15 is located above the top wall for further description.
Along the second direction Z, the height of the first structural member 41 is H1, the height of the first insulator 5 is H2, and H1 is H2. The height of the first portion 2111 is H3, H1 ≧ H3.
The battery pack 100 further includes a first potting portion 71, and the insulating resin may be injected into the receiving space 17 from the first potting portion 71. Optionally, the first glue filling portion 71 is an opening structure. In the present application, there is a gap between the first structural member 41 and the circuit board 3 in the second direction Z, and the first potting portion 71 may include the gap. Along the first direction X, the projection of the gap is located between the projection of the circuit board and the projection of the first structural member.
In an embodiment, along the second direction Z, the projection of the circuit board 3 and the projection of the first structural member 4 overlap.
Referring to fig. 4 and 8, the cell module 2 further includes a third structural member 22, where the third structural member 22 is disposed between two adjacent cells 21, and along the first direction X, one end of the third structural member 22 is in contact connection with the first portion 2111 of one cell 21, and the other end of the third structural member 22 is in contact connection with the first portion 2111 of another cell 21. In the first direction X, the third structural member 22 is in a compressed state. The third structural member 22 not only serves as a buffer function to improve the shock resistance of the battery pack 100, but also is elastically compressed and deformed further when the battery cell 21 expands, so as to provide an expansion space for the expansion of the battery cell 21.
In some embodiments, the third structural member 22 includes, but is not limited to, at least one of foam and fiberglass felt.
The cell module 2 further includes a fourth structural member 23, and the fourth structural member 23 is disposed between the second portions 2112 of the adjacent cells 21. Optionally, the fourth structural member 23 comprises foam.
In some embodiments, the electrode terminal 212 is electrically connected to the circuit board 3 by soldering.
Referring to fig. 2, 3 and 4, a first concave portion 111 is disposed on a side of the first sidewall 11 and/or the second sidewall 12 close to the cell module 2, one end of the first concave portion 111 is located at an end of the first sidewall 11 or the second sidewall 12 close to the third sidewall 13, and another end of the first concave portion 111 extends along the first direction X toward the fourth sidewall 14. Alternatively, the first side wall 11 and the second side wall 12 are both provided with the first concave portion 111, and the following description will take the example that the first side wall 11 and the second side wall 12 are both provided with the first concave portion 111.
The end of the circuit board 3 along the third direction Y is provided with a second protrusion 31, and the second protrusion 31 is connected to the first recess 111. Alternatively, the second convex portion 31 is a side of the circuit board 3 in the third direction Y.
In some embodiments, the battery pack 100 further includes a second structural member 42, one end of the second structural member 42 is connected to the second protrusion 31 of the circuit board 3, and the other end is connected to the first recess 111 of the first sidewall 11 or the second sidewall 12, so that the circuit board 3 is fixedly connected to the first housing 191. Specifically, the second structure 42 has a first protrusion 421 and a second recess 424, the first protrusion 421 corresponds to the first recess 111 and can be accommodated in the first recess 111, and the second protrusion 31 corresponds to the second recess 424 and can be accommodated in the second recess 424.
Alternatively, the number of the second structural members 42 is two, the circuit board 3 has second convex portions 31 at both ends in the third direction Y, one of the two second structural members 42 is connected to the second convex portion 31 at one end of the circuit board 3, and the other of the two second structural members 42 is connected to the second convex portion 31 at the opposite end of the circuit board 3.
The battery pack 100 further includes a first adhesive member (not shown) disposed between the second protrusion 31 and the second recess 424 and connecting the second protrusion 31 and the second recess 424, so that the circuit board 3 is stably connected to the second structural member 42. Alternatively, the first adhesive member is formed by curing a resin applied in advance in the second concave portion 424.
Along the third direction Y, the height of the first protrusion 421 is matched with the depth of the first recess 111, when the first protrusion 421 is received in the first recess 111, the end of the first protrusion 421 along the third direction Y is matched with the bottom of the first recess 111, and the two first recesses 111 can limit the movement of the circuit board 3 along the third direction Y through the two second structural members 42.
The outer width of the first protrusion 421 is matched with the inner width of the first recess 111 along the second direction Z, and when the first protrusion 421 is received in the first recess 111, the end of the first protrusion 421 along the second direction Z is matched with the sidewall of the first recess 111, so that the first recess 111 limits the movement of the circuit board 3 along the second direction Z through the second structural member 42.
Referring to fig. 4, 9 and 10, in some embodiments, the second structural member 42 further includes a third protrusion 422 and a fourth protrusion 423, and the third protrusion 422 and the fourth protrusion 423 are respectively located at two ends of the second structural member 42 along the first direction X. Also, the third convex portion 422 and the fourth convex portion 423 each extend from the first convex portion 421 in the second direction Z.
Along the first direction X, a distance between the third protrusion 422 and the fourth protrusion 423 is adapted to a length of the first recess 111, when the first protrusion 421 is accommodated in the first recess 111, the third protrusion 422 abuts against one end of the first recess 111 along the first direction X, and the fourth protrusion 423 abuts against the other end of the first recess 111 along the first direction X, so that the second structure 42 is clamped in the first recess 111, and the movement of the circuit board 3 along the first direction X is limited.
Optionally, the second structural member 42 further includes a third concave portion 425 and two third convex portions 422, the third concave portion 425 and the two third convex portions 422 are located on one side of the second structural member 42 close to the third side wall 13, the two third convex portions 422 are spaced apart along the second direction Z, and the third concave portion 425 is located between the two third convex portions 422. The two third protrusions 422 are elastically deformable toward each other until the two third protrusions 422 no longer protrude from the first protrusion 421 (not shown) along the second direction Z, and the second structural member 42 can be inserted into the first recess 111 from the end provided with the third protrusions 422, so that the first protrusion 421 can move in the first recess 111 along the first direction X.
In some embodiments, the second structural member 42 comprises a plastic material.
As shown in fig. 11, 12 and 13, in some embodiments, the second protrusion 31 of the circuit board 3 is directly received in the first recess 111. Further, the first concave portion 111 and the second convex portion 31 have a gap therebetween in the third direction Y and the second direction Z.
Optionally, the battery pack 100 further includes a second adhesive member (not shown) disposed in a gap between the second protrusion 31 and the first recess 111 and connecting the second protrusion 31 and the first recess 111, so that the circuit board 3 is stably connected to the first housing 191. Optionally, the second adhesive member is formed by curing resin.
In some embodiments, the circuit board 3 has second protruding portions 31 at both ends along the third direction Y, one of the two second protruding portions 31 is received in the first recessed portion 111 of the first side wall 11, and the other of the two second protruding portions 31 is received in the first recessed portion 111 of the second side wall 12.
As shown in fig. 14, 15 and 16, in some embodiments, the second protruding portion 31 of the circuit board 3 is directly received in the first recessed portion 111. Along the first direction X, one end of the circuit board 3 abuts against the third sidewall 13, and the opposite end of the circuit board 3 abuts against the fourth sidewall 14.
Optionally, the third sidewall 13 is provided with a fourth concave portion 131, the fourth sidewall 14 is provided with a fifth concave portion 141, the fourth concave portion 131 and the fifth concave portion 141 respectively correspond to two ends of the circuit board 3 along the first direction X, the fourth concave portion 131 can accommodate one end of the circuit board 3 along the first direction X, and the fifth concave portion 141 can accommodate the other end of the circuit board 3 opposite to the first direction X. And, the distance between the bottom of the fourth concave portion 131 and the bottom of the fifth concave portion 141 is adapted to the length of the circuit board 3 in the first direction X.
After the battery pack 100 is assembled, along the first direction X, one end of the circuit board 3 abuts against the bottom of the fourth recess 131, and the opposite end of the circuit board 3 abuts against the bottom of the fifth recess 141, so that the third sidewall 13 and the fourth sidewall 14 cooperate to limit the degree of freedom of the circuit board 3 along the first direction X. And, the circuit board 3 can be stably fixedly coupled to the first battery pack case 1 by the close fitting of the fourth concave portion 131 and the fifth concave portion 141 with the circuit board 3 in the first direction X.
As shown in fig. 17, 18 and 19, in some embodiments, the second protrusion 31 of the circuit board 3 is directly received in the first recess 111.
The first insulating member 5 is attached to the circuit board 3, and stably attaches the circuit board 3 to the battery pack case 1. Specifically, the end of the first insulating member 5 near the second space 18 contacts the side of the connection circuit board 3 near the receiving space 17, and the first insulating member 5 secures the circuit board 3 by adhesion.
In some embodiments, the circuit board 3 is provided with a second potting portion 72, and the second potting portion 72 penetrates through the circuit board 3 along the second direction Z and communicates the accommodating space 17 and the second space 18. The insulating resin can be injected into the second space 18 through the second potting portion 72 until contacting one side of the connection circuit board 3 close to the accommodating space 17, and after the insulating resin is cured, the first insulating member 5 is formed, so that the cell module 2 and the circuit board 3 are fixed to the battery pack case 1.
In summary, in the battery pack 100, the cell module 2 and the first structural member 41 are disposed in the accommodating space 17, at least part of components of the circuit board 3 are disposed in the second space 18, the battery pack 100 is horizontally disposed (the bottom wall 16 is located below and the top wall 15 is located above), and the first insulating member 5 is formed by filling the accommodating space 17 with insulating resin through the first potting portion 71 or the second potting portion 72 and then curing the insulating resin, so that the cell module 2 is stably fixed to the battery pack case 1, the number of components covered by the first insulating member 5 is reduced, the influence of the first insulating member 5 on the components is reduced, and the energy utilization rate of the battery pack 100 can be improved. The circuit board 3 and the battery pack shell 1 are connected through the second structural member 42, or the circuit board 3 and the battery pack shell 1 are connected through the second adhesive member, or the circuit board 3 and the battery pack shell 1 are connected through the first insulating member 5, and the circuit board 3 is stably connected to the battery pack shell 1 on the side, close to the accommodating space 17, of the circuit board 3.
In addition, other changes may be made by those skilled in the art within the spirit of the present application, and it is understood that such changes are encompassed within the scope of the present disclosure.
Claims (10)
1. The utility model provides a battery pack, includes battery pack casing, electric core module and circuit board, the battery pack casing includes accommodating space, the electric core module includes a plurality of electric cores of piling up the setting along the first direction, electric core electricity connect in the circuit board, its characterized in that still includes:
the first structural member is arranged in the accommodating space, and is arranged between the battery cell module and the battery pack shell along the first direction;
the first insulating piece is arranged in the accommodating space, is connected with the battery cell module, the first structural member and the battery pack shell, and is formed by arranging insulating resin in the accommodating space and then curing the insulating resin;
along the first direction, the projection of the circuit board is separated from the projection of the first structural member.
2. The battery pack according to claim 1, wherein the battery pack case includes a bottom wall, the circuit board is opposed to the bottom wall in a second direction perpendicular to the first direction, and the accommodation space is provided between the circuit board and the bottom wall;
the height of the first structural member is not less than the height of the first insulating member in the second direction.
3. The battery pack of claim 2, further comprising a first potting portion, the first potting portion communicating with the receiving space;
along the first direction, the projection of the first glue filling part is positioned between the projection of the circuit board and the projection of the first structural member.
4. The battery pack according to claim 3, wherein the first structural member and the circuit board have a gap in the second direction, and the first potting portion includes the gap, and a projection of the circuit board and a projection of the first structural member overlap in the second direction.
5. The battery pack of claim 4, wherein the battery pack housing further comprises a first sidewall and a second sidewall, the first sidewall and the second sidewall being opposite and respectively located on both sides of the cell module along a third direction perpendicular to the first direction and the second direction;
the first side wall and/or the second side wall are/is provided with a first concave part which extends along the first direction;
the battery pack further comprises a second structural part, the second structural part is provided with a first convex part and a second concave part, and the first convex part is accommodated in the first concave part;
and a second convex part is arranged at the end part of the circuit board along the third direction and is contained in the second concave part.
6. The battery pack of claim 5, wherein the second structural member comprises:
the third convex part is arranged at the end part of the second structural part along the first direction;
the fourth convex part is arranged at the end part, far away from the third convex part, of the second structural part along the first direction;
one of the third convex portion and the fourth convex portion abuts against one end of the first concave portion in the first direction, and the other of the third convex portion and the fourth convex portion abuts against the other end of the first concave portion opposite to the first direction.
7. The battery pack according to claim 2,
the battery pack shell further comprises a first side wall and a second side wall, and the first side wall and the second side wall are opposite and are respectively located on two sides of the battery cell module along a third direction perpendicular to the first direction and the second direction;
the first side wall and/or the second side wall are/is provided with a first concave part which extends along the first direction;
and a second convex part is arranged at the end part of the circuit board along the third direction, and is accommodated in the first concave part.
8. The battery pack according to claim 7, further comprising a second adhesive member connecting the second convex portion and the first concave portion.
9. The battery pack according to claim 7,
the battery pack shell further comprises a third side wall and a fourth side wall, the third side wall and the fourth side wall are both connected with the first side wall and the second side wall, and the third side wall and the fourth side wall are respectively located on two sides of the battery cell module along the first direction;
along the first direction, the third side wall is abutted against one end of the circuit board, and the fourth side wall is abutted against the other opposite end of the circuit board.
10. An electric device comprising a device body and a battery pack mounted on the device body, characterized in that the battery pack is the battery pack according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122483673.5U CN216054952U (en) | 2021-10-15 | 2021-10-15 | Battery pack and electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122483673.5U CN216054952U (en) | 2021-10-15 | 2021-10-15 | Battery pack and electric equipment |
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| Publication Number | Publication Date |
|---|---|
| CN216054952U true CN216054952U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122483673.5U Active CN216054952U (en) | 2021-10-15 | 2021-10-15 | Battery pack and electric equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976507A (en) * | 2022-06-30 | 2022-08-30 | 东莞新能安科技有限公司 | Battery pack and electric equipment |
| WO2023185404A1 (en) * | 2022-03-28 | 2023-10-05 | 东莞新能安科技有限公司 | Circuit board assembly, battery and electric apparatus |
| WO2024078497A1 (en) * | 2022-10-14 | 2024-04-18 | 厦门新能达科技有限公司 | Electrochemical apparatus and electric device |
-
2021
- 2021-10-15 CN CN202122483673.5U patent/CN216054952U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023185404A1 (en) * | 2022-03-28 | 2023-10-05 | 东莞新能安科技有限公司 | Circuit board assembly, battery and electric apparatus |
| CN114976507A (en) * | 2022-06-30 | 2022-08-30 | 东莞新能安科技有限公司 | Battery pack and electric equipment |
| WO2024078497A1 (en) * | 2022-10-14 | 2024-04-18 | 厦门新能达科技有限公司 | Electrochemical apparatus and electric device |
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