CN212874653U - Battery can shell structure - Google Patents

Battery can shell structure Download PDF

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Publication number
CN212874653U
CN212874653U CN202021253305.0U CN202021253305U CN212874653U CN 212874653 U CN212874653 U CN 212874653U CN 202021253305 U CN202021253305 U CN 202021253305U CN 212874653 U CN212874653 U CN 212874653U
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Prior art keywords
shell
casing
battery
battery cell
battery pack
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CN202021253305.0U
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Chinese (zh)
Inventor
柯亨钊
戴建红
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Zhejiang Lera New Energy Power Technology Co Ltd
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Zhejiang Lera New Energy Power Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The utility model discloses a battery pack shell structure, which relates to the technical field of battery packs and comprises a shell, an electric core and a circuit board, wherein the electric core and the circuit board are arranged in the shell; the outer surface of the radial peripheral side of the shell accommodating battery cell is not provided with a separation edge; a bent and closed separation edge is arranged between the first shell and the second shell, and the separation edges are positioned in the same plane; the utility model discloses a novel battery package structure is through the battery package structural design who adopts single electric core for battery package structure is simpler, and the volume is smaller and more exquisite, and holistic shell structure design is convenient for more to peg graft the installation and improves simultaneously and grips and feel.

Description

Battery can shell structure
Technical Field
The utility model belongs to the technical field of the battery package technique and specifically relates to a battery package shell structure.
Background
In order to improve the universality of the electric tool and enable the working range of the electric tool not to be limited by the position of a socket, a battery pack power supply mode is adopted in many electric tools on the market. The electric tool has the characteristics of convenience in carrying, simplicity in operation, various functions and the like, can greatly reduce the labor intensity, improve the working efficiency and realize manual operation mechanization, so that the electric tool is widely applied to the fields of buildings, house decoration, automobiles, machinery, electric power, bridges, gardening and the like and can enter families in a large quantity. For electric tool, whether the battery package is suitable and whether the firm problem of assembly is crucial to electric tool, and current electric tool battery package installation device is generally the snap-on electric tool, therefore the convenient battery package of changing that can not, simultaneously, because the battery package is bulky great, the structure is complicated, and it is all convenient inadequately to charge and discharge the use, and is inconvenient as portable power source and uses.
SUMMERY OF THE UTILITY MODEL
First, technical problem to be solved
The utility model discloses an above-mentioned defect to prior art existence especially provides a battery pack shell structure, and it is complicated to solve current battery pack structure, and the great problem of volume has still been solved current battery pack simultaneously and has gripped the not good problem of feeling.
Second, technical scheme
In order to solve the above technical problem, the present invention provides a battery enclosure structure, which includes a housing, an electrical core and a circuit board disposed inside the housing, wherein the housing includes a first housing for accommodating the electrical core, and at least one second housing, the second housing corresponds to an anode and/or a cathode of the electrical core, and the first housing and the second housing form a closed cavity for accommodating the electrical core and the circuit board;
the outer surface of the radial periphery side of the cell accommodated in the shell is not provided with a separation edge.
Wherein, a bent and closed separation edge is arranged between the first shell and the second shell, and the separation edges are positioned in the same plane.
And the plane of the separation edge is parallel to the planes of the positive electrode and the negative electrode of the battery cell.
The first shell and the second shell are mutually embedded and clamped and fixed through a clamping type structure, and the separation edge of the first shell and the second shell is located at the outer end face of the shell.
The first shell and the second shell are respectively and only one, the second shell is arranged at the positive electrode end or the negative electrode end of the battery cell, and the first shell is connected with the second shell in a sealing mode.
Wherein, first casing has and only 1, and the second casing is equipped with 2, and the second casing passes through sealing connection's mode to be fixed at the relative both ends of first casing.
Wherein, the mode of sealing connection is ultrasonic welding.
A battery can shell structure comprises at least one first shell and at least one second shell, wherein the first shell is connected together along at least one contact line through at least one contact surface of the first shell and at least one contact surface of the second shell,
the first shell and the second shell are connected with each other along a contact line to form at least one shell for accommodating the battery cell; the case covers no separation edge on the outer surface of the radial periphery side of the battery cell.
The first shell extends along the length direction of the battery cell and covers the battery cell, and no separation edge is arranged on the outer surface of the first shell.
The first shell extends along the length direction of the battery cell, and the positive and negative ends of the battery cell are located on the inner sides of the two opposite ends of the first shell.
Third, beneficial effect
Compared with the prior art, the novel battery pack structure of the utility model adopts the structural design of the battery pack with single battery cell, so that the structure of the battery pack is simpler, the volume is smaller, and meanwhile, the integral structural design of the shell is more convenient for inserting and mounting and improves the holding hand feeling;
through adopting compact structural design, the volume of whole battery package has reduced greatly for the application scope of battery package is wider, not only includes the handheld electric tool of no rope class, still includes garden instrument, the power operation equipment that adopts secondary battery as the power supply such as cordless dust catcher, direct current air compressor machine.
Drawings
Fig. 1 is a perspective view of the battery can housing structure of the present invention;
fig. 2 is an exploded view of the battery pack case structure of the present invention 1;
fig. 3 is an exploded view of the battery pack case structure of the present invention 2;
fig. 4 is a structural diagram of the circuit board of the present invention;
fig. 5 is an exploded view of the battery pack case structure of the present invention, fig. 3;
fig. 6 is a front view of a second housing of the present invention;
in the figure: 1 is a shell; 2 is an electric core; 3 is a circuit board; 4 is a first electrical connector; 5 is a second electrical connector; 6 is a third electrical connector; 7 is a fourth electrical connector; 8 is a supporting framework; 9 is a waterproof sealing gasket; 10 is a first interface; 12 is a second interface; 15 is an insulating pad; 16 is a supporting fixture block; 17 is a clamping buckle plate; 18 is a first opening; 19 is a second opening; 20 is a first shell; 21 is a second shell; 28 is a contact surface; and 29 is a separation edge.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Example 1:
the utility model discloses a battery pack, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, place electric core 2 and circuit board 3 in casing 1 in including casing 1, still include:
the first electric connector 4 is used for connecting one ends of the positive electrode and the negative electrode of the battery cell 2 with the circuit board 3;
the second electric connector 5 is used for connecting the other ends of the anode and the cathode of the battery cell 2 with the circuit board 3;
in this embodiment, the casing 1 includes a first casing 20 for accommodating the battery cell 2, and at least one second casing 21, where the second casing 21 is disposed at a positive electrode end and/or a negative electrode end of the battery cell 2, and the first casing 20 and the second casing 21 form a sealed cavity for accommodating the battery cell 2;
specifically, as shown in fig. 5 and fig. 6, in the present embodiment, there is only one first casing 20 and only one second casing 21, the second casing 21 is disposed at the positive electrode end or the negative electrode end of the battery cell 2, a curved and closed separation edge 29 is disposed between the first casing 20 and the second casing 21, and the separation edges 29 are located in the same plane; the plane of the separation edge 29 is parallel to the plane of the positive electrode and the negative electrode of the battery core 2, that is, the edge of the second casing 21 is the separation edge 29 matched with the first casing 20, the plane of the second casing 21 is perpendicular to the axial direction of the positive electrode and the negative electrode of the battery core 2, and the first casing 20 is barrel-shaped; the outer surface of the radial periphery side of the cell 2 accommodated by the casing 1 is not provided with a separation edge 29, the first casing 20 is of an integrated structure, the second casing 21 is embedded and fixed at the end part of the first casing 20, specifically, the first casing 20 and the second casing 21 are mutually embedded and clamped and fixed through a clamping structure, and the separation edge 29 of the first casing 20 and the second casing 21 is positioned at the outer end face of the casing 1; the side wall of the structure of the shell 1 of the embodiment has no visible separation edge 29, so that the integrated design feeling is presented, and the hand-holding feeling is better when the shell is used as a mobile power supply.
And the first shell 20 and the second shell 21 are connected in a sealing mode, the sealing connection mode is ultrasonic welding, and the whole sealing performance is further improved.
As shown in fig. 1, in this embodiment, the third electrical connector 6 is disposed on the circuit board 3 and includes at least one first interface 10, where the first interface 10 is used to electrically connect with an external electrical device, so that power from the battery cell 2 can be provided to the electrical device through the third electrical connector; a fourth electrical connector 7 disposed on the circuit board 3 and including at least one second interface 12, wherein the second interface 12 is used for electrically connecting with an external electrical device and a charging source, so that the electrical device can be powered through the second interface 12; the electric charge can be provided to the electric core 2 through the second interface 12, and the third electrical connector 6 and the fourth electrical connector 7 can be disposed on the same side or opposite sides of the battery pack according to actual product requirements.
Specifically, the battery pack in this embodiment further includes a support frame 8, where the support frame 8 is used to mount the electric core 2 and the circuit board 3, as shown in fig. 2, the electric core 2 is a single-section 21700 electric core, an arc-shaped groove is formed in the upper portion of the support frame 8 and is used to arrange the electric core 2, and an insulating pad 15 is arranged between the support frame 8 and the electric core 2; the electric leakage protection effect can be achieved, and particularly when the damage condition of the surface of the battery cell 2 occurs, the electric leakage condition is guaranteed not to occur.
In the present embodiment, in order to realize that the circuit board 3 is supported on the supporting framework 8 at intervals, two sides of the bottom of the supporting framework 8 are respectively provided with 2 protruding supporting fixture blocks 16; be equipped with 2 joint buckle 17 respectively in 8 bottom both sides of support chassis, be used for spacing apart circuit board 3 and support chassis 8 through supporting fixture block 16, step shape supports fixture block 16 and is used for injecing the interval between circuit board 3 and the support chassis 8 promptly, and joint buckle 17 is used for fixing circuit board 3 and the straining of support chassis 8, effectively guarantees to have certain radiating effect between circuit board 3 and the electric core 2.
As shown in fig. 4, the first interface 10 and/or the second interface 12 extend outward along the positive and negative axial directions of the battery core 2; the second interface 12 extends outward along the positive and negative axes of the electric core 2, that is, the plugging directions of the first interface 10 and the second interface 12 are both set along the longest side of the battery pack, which is more convenient for use.
In this embodiment, the housing 1 is provided with a second opening 19 corresponding to the second port 12; the shell 1 is provided with a first opening 18 corresponding to the first interface 10; and the second interface 12 and the first interface 10 are arranged at the same end of the battery pack in parallel, that is, through the arrangement of the first interface 10 and the second interface 12, the problem of multifunctional applicability of the battery pack in the embodiment is realized, and the battery pack is small in overall structure and easy and convenient to use.
And a mounting gap is arranged between the third electric connector 6 and the supporting framework 8, and a mounting gap is arranged between the fourth electric connector 7 and the supporting framework 8, specifically, the fourth electric connector 7 slightly protrudes out of the third electric connector 6, the mounting gaps between the third electric connector 6, the fourth electric connector 7 and the supporting framework 8 are sealed by a waterproof sealing gasket 9, a slot corresponding to the third electric connector 6 and the fourth electric connector 7 is arranged on the waterproof sealing gasket 9, the waterproof sealing gasket 9 is sleeved on the fourth electric connector 7, and the waterproof gasket 9 completely seals the installation gap by slight extrusion deformation between the supporting framework 8 and the shell 1, meanwhile, the side walls of the third electric connector 6 and the fourth electric connector 7 are completely attached tightly, so that the sealing effect is further ensured, and meanwhile, the corresponding positioning and mounting effects are achieved through the fourth electric connector 7.
The battery pack in the embodiment supplies power by taking the battery cell 2 as a power supply, adopts a single 21700 battery cell, and is suitable for power tools not only limited to cordless handheld power tools, but also power operation equipment such as garden tools, cordless dust collectors and direct-current air compressors which adopt secondary batteries as power sources; the battery pack has the advantages that the application range of the battery pack is greatly improved, the whole structure is simple, the battery pack can be used as a portable mobile power source, the size is small, and the functionality is stronger.
And the first electric connector 4 and the second electric connector 5 at least comprise longitudinal bending sections extending along the axial direction of the positive electrode and the negative electrode of the battery cell 2, namely the right-angle-shaped bending first electric connector 4 and the right-angle-shaped bending second electric connector 5 are respectively used for connecting the positive electrode and the negative electrode of the battery cell and the circuit board 3.
Example 2:
compared with embodiment 1, in this embodiment, the battery pack is further provided with at least 2 first interfaces 10, the first interfaces 10 are electrically connected to the circuit board 3 through the third electrical connector 6, and the first interfaces 10 can be used for being electrically connected to external electric equipment and a power supply, so that the electric power of the battery cell 2 can be supplied to the electric equipment through the first interfaces 10; specifically, the number of the first interfaces 10 in this embodiment is 2, and 2 first interfaces 10 are respectively disposed at two ends of the battery pack; the 2 first interfaces 10 respectively include a pin-type terminal and a USB interface, the pin-type terminal is arranged as in embodiment 1, and the USB interface is arranged on the side of the battery pack opposite to the pin-type terminal.
The application range of the battery pack used as a mobile power supply is further improved through the arrangement of the USB interface.
Example 3:
compared with embodiment 1, in this embodiment, there are only 1 first casing 20, there are 2 second casings 21, and the second casings 21 are fixed at two opposite ends of the first casing 20 in a sealing connection manner, that is, the first casing 20 is barrel-shaped with two through ends, and the two second casings 21 have the same shape and size, and are respectively fixed to two ends of the first casing 20 in a sealing manner, and the sealing connection manner is ultrasonic welding, so that the overall sealing performance is further improved.
Example 4:
compared with embodiment 1, in this embodiment, the casing 1 includes two or three first casings 20 for accommodating the battery cells 2 and at least one second casing 21, the second casing 21 corresponds to the positive electrode and/or the negative electrode of the battery cells 2, the second casing 21 is the same as that in embodiment 1 or embodiment 3, and the first casing 20 and the second casing 21 form a sealed cavity for accommodating the battery cells 2 and the circuit board 3;
specifically, the case 1 does not have the separation edge 29 on the outer surface on the radial periphery side of the cell 2, and since the length of the case 1 in the present embodiment is greater than the length of the cell 2, that is, both ends of the case 1 may partially exceed the positive electrode end and the negative electrode end of the cell 2, that is, when two or three first cases 20 are provided, the separation edge 29 is provided at a position where the case 1 exceeds the length of the cell 2, that is, on the first case 20 outside the radial periphery side of the cell 2.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A battery can shell structure, includes casing (1), sets up electric core (2) and circuit board (3) inside casing (1), its characterized in that:
the shell (1) comprises a first shell (20) for accommodating the battery cell (2) and at least one second shell (21), the second shell (21) corresponds to the positive electrode end and/or the negative electrode end of the battery cell (2), and the first shell (20) and the second shell (21) form a closed cavity for accommodating the battery cell (2) and the circuit board (3);
the outer surface of the radial periphery of the cell (2) accommodated by the shell (1) is not provided with a separation edge (29).
2. The battery pack case structure according to claim 1, wherein: the first shell (20) and the second shell (21) are provided with a bent and closed separation edge (29), and the separation edges (29) are positioned in the same plane.
3. The battery can casing structure of claim 2, wherein: the plane of the separation edge (29) is parallel to the plane of the positive pole and the negative pole of the battery core (2).
4. The battery pack case structure according to claim 1, wherein: the first shell (20) and the second shell (21) are mutually embedded and clamped and fixed through a clamping type structure, and the separation edge (29) of the first shell (20) and the second shell (21) is located at the outer end face of the shell (1).
5. The battery pack case structure according to claim 1, wherein: the first shell (20) and the second shell (21) are respectively provided with only one shell, the second shell (21) is arranged at the positive electrode end or the negative electrode end of the battery cell (2), and the first shell (20) is hermetically connected with the second shell (21).
6. The battery pack case structure according to claim 1, wherein: the number of the first shells (20) is only 1, the number of the second shells (21) is 2, and the second shells (21) are fixed at two opposite ends of the first shells (20) in a sealing connection mode.
7. The battery pack case structure according to any one of claims 5 or 6, wherein: the sealing connection mode is ultrasonic welding.
8. A battery can casing structure comprising at least one first casing (20) and at least one second casing (21), said first casing (20) being connected together along at least one contact line by at least one contact surface (28) of the first casing (20) and by at least one contact surface (28) of said second casing (21), characterized in that:
the first casing (20) and the second casing (21) are connected to each other along the contact line to form at least one casing (1) for accommodating a battery cell (2); the case (1) covers the outer surface of the radial periphery side of the battery cell without a separation edge (29).
9. The battery pack case structure according to claim 8, wherein: the first casing (20) extends along the length direction of the battery cell (2) and covers the battery cell (2), and has no separation edge (29) on the outer surface.
10. The battery pack case structure according to claim 8, wherein: the first shell (20) extends along the length direction of the battery cell (2), and the positive and negative ends of the battery cell (2) are located on the inner sides of the two opposite ends of the first shell (20).
CN202021253305.0U 2020-06-30 2020-06-30 Battery can shell structure Active CN212874653U (en)

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CN202021253305.0U CN212874653U (en) 2020-06-30 2020-06-30 Battery can shell structure

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CN202021253305.0U CN212874653U (en) 2020-06-30 2020-06-30 Battery can shell structure

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CN212874653U true CN212874653U (en) 2021-04-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022002023A1 (en) * 2020-06-30 2022-01-06 浙江动一新能源动力科技股份有限公司 Battery pack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022002023A1 (en) * 2020-06-30 2022-01-06 浙江动一新能源动力科技股份有限公司 Battery pack

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CP02 Change in the address of a patent holder

Address after: 315000 No. 255, Kesheng Road, Wangchun Industrial Park, Haishu District, Ningbo City, Zhejiang Province

Patentee after: ZHEJIANG LERA NEW ENERGY POWER TECHNOLOGY Co.,Ltd.

Address before: 398 Longtan Road, Fenghua District, Ningbo City, Zhejiang Province

Patentee before: ZHEJIANG LERA NEW ENERGY POWER TECHNOLOGY Co.,Ltd.

CP02 Change in the address of a patent holder