CN113991343A

CN113991343A - Power supply structure

Info

Publication number: CN113991343A
Application number: CN202011130402.5A
Authority: CN
Inventors: 柯亨钊; 戴建红
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2020-07-27
Filing date: 2020-10-21
Publication date: 2022-01-28
Also published as: CN113594732A; CN212848977U; CN215377782U

Abstract

The invention provides a power supply structure, which comprises a shell, an electric core and a circuit board, wherein the electric core and the circuit board are arranged in the shell; the first end and the second end of the battery cell, which are opposite to each other along the length direction, are respectively connected with the supporting framework in a positioning way; and the first electric connector and the second electric connector are respectively and correspondingly arranged at the electrodes at the first end and the second end of the battery cell, extend outwards and transversely, are bent and attached to the outer surface of the supporting framework, and extend towards the circuit board to be connected to the circuit board. The technical scheme plays a role in safety power utilization protection.

Description

Power supply structure

Technical Field

The present invention relates to a power supply structure.

Background

In order to improve the versatility of the electric power tool and to prevent the working range of the electric power tool from being limited by the position of the socket, many cordless electric power tools are available on the market. The cordless 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, and is widely applied to the fields of buildings, house decoration, automobiles, machinery, electric power, bridges, gardening and the like.

Disclosure of Invention

The invention aims to provide a power supply structure with electric safety.

The invention provides a power supply structure, which comprises a shell, a battery cell and a circuit board, wherein the battery cell and the circuit board are arranged in the shell; the first end and the second end of the battery cell, which are opposite to each other along the length direction, are respectively connected with the supporting framework in a positioning manner;

and the first electric connector and the second electric connector are respectively and correspondingly arranged at the electrodes at the first end and the second end of the battery cell, extend outwards and transversely, are bent and attached to the outer surface of the supporting framework, and extend towards the circuit board to be connected to the circuit board.

Furthermore, a gap is formed between the circuit board and the support framework, the first electrical connector and the second electrical connector respectively comprise an extension connecting section located at the gap, and the extension connecting section extends along the length direction of the battery cell and is connected with the circuit board at the tail end.

Further, the extension connecting section extends along the outer surface of the support skeleton.

Furthermore, the extending connection sections at the two opposite ends are respectively positioned at the two opposite sides of the circuit board.

Compared with the prior art, the invention has the beneficial technical effects that:

above-mentioned structural design makes first electric connector and second electric connector and electric core epidermis form interval distribution, and first electric connector and second electric connector link to each other with electric core electrode, and obviously be conducting material, support the skeleton among this technical scheme and be insulating material, so, be separated by insulating material between electrically conductive first electric connector and second electric connector and the electric core epidermis, consequently, even the electric core epidermis is damaged, can not take place the short circuit accident yet, play the effect of safe insulation protection.

It is another object of the present invention to provide a power supply structure that is simple to assemble.

The utility model provides a power supply structure, includes the casing, sets up inside electric core and the circuit board of casing, its characterized in that:

the power supply structure further comprises a support framework suitable for installing and positioning the battery core and the circuit board; the first end and the second end of the battery cell, which are opposite to each other along the length direction, are respectively connected with the supporting framework in a positioning manner;

a third electrical connector disposed at one end of the circuit board, the third electrical connector configured to be electrically connected to an electrical consumer, such that power from the battery cell may be provided to the electrical consumer through the third electrical connector;

and the supporting framework is provided with an installation position corresponding to the third electric connector.

Further, the third electrical connector is a pin terminal, and comprises at least two pin connection columns suitable for being connected with the circuit board, and the support framework extends upwards to form a bulge to form a mounting area matched with the pin terminal.

Furthermore, the pin terminal is provided with a lug near the extending convex part of the supporting framework, and the lug is fixedly connected with the circuit board and/or the supporting framework.

Furthermore, the third electric connector comprises a USB interface, and the circuit board is provided with a mounting notch corresponding to the USB interface.

above-mentioned structural design simply installs the location with circuit board and electric core through the braced frame to link to each other electric core both ends electrode and circuit board, the corresponding installation position of configuration and third electric connector on the braced frame simultaneously, overall structure overall arrangement is simple, and the assembly is simple and easy convenient.

Still another object of the present invention is to provide a power supply structure for different electric devices.

The invention provides a power supply structure, which comprises a shell, and a battery cell and a circuit board which are arranged in the shell, and is characterized in that:

the third electric connector comprises a pin terminal and a USB interface which are arranged at the same end, a notch suitable for the USB interface to be positioned, installed and connected is formed in one side of the pin terminal, and the USB interface is installed in the notch in a matched mode and connected with the circuit board.

Furthermore, the pin terminal and the USB interface respectively include an extension protruding section, the extension protruding section is sleeved with a sealing sleeve adapted to the extension protruding section, and the sealing sleeve is clamped between the third electrical connector and the inner wall of the housing.

Furthermore, one side of the sealing sleeve, which is close to the inner wall of the shell, is provided with a convex edge part, the inner wall of the shell is correspondingly provided with a side groove matched with the inner wall of the shell, and the edge part is inserted into the side groove.

Furthermore, the circuit board and the supporting framework are arranged at intervals, the circuit board is provided with an installation gap corresponding to the USB interface, the USB interface is correspondingly installed in the installation gap, and the upper surface of the USB interface is basically flush with the upper surface of the circuit board.

Furthermore, the circuit board and the support framework are arranged at intervals, the minimum distance between the circuit board and the support framework is H, and H is less than or equal to 2 mm.

the pin type terminal is electrically connected with external electric equipment through a pin type connecting column connected with the circuit board, the pin type connecting column at least comprises a positive discharging electrode and a negative discharging electrode, is suitable for positive and negative discharging, and can also comprise a signal terminal which is in communication connection with the electric equipment and is suitable for signal transmission. The pin terminals are typically used in power tool equipment, and the discharge current is typically large.

And the pin type terminal is plastically packaged in the plastic body by adopting an injection molding integrated molding method, so that the dustproof and waterproof effects can be effectively achieved.

In addition, the USB interface is configured, and is generally used for supplying power for 3C electric equipment or supplying power for electronic equipment around 3C, preferably adopting type-C, and the battery cell can be charged through the type-C.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1: the power supply structure of the embodiment of the invention has an explosion diagram;

FIG. 2: the power supply structure of the embodiment of the invention is in a sectional view;

FIG. 3: the power supply structure of the embodiment of the invention has partial exploded view;

FIG. 4: the structure of the power supply structure part of the specific embodiment of the invention is shown schematically;

FIG. 5: the structure of the supporting framework of the embodiment of the invention is shown schematically;

FIG. 6: the invention discloses an explosion schematic diagram of a power supply structure part structure in a specific embodiment;

FIG. 7: the invention discloses an explosion schematic diagram of a power supply structure part structure in a specific embodiment;

FIG. 8: the shell of the specific embodiment of the invention is in a sectional view.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

[ example 1 ]

As shown in fig. 1 and fig. 2, a power supply structure 100 includes a casing 10, a battery cell 20 and a circuit board 30 disposed inside the casing 10, wherein the power supply structure 100 further includes a supporting framework 40 adapted to mount and position the battery cell 20 and the circuit board 10; a first end and a second end of the battery cell 20, which are opposite to each other along the length direction, are respectively connected with the supporting framework 40 in a positioning manner;

and the first electrical connector 50 and the second electrical connector 60 are respectively arranged at the electrodes at the first end and the second end of the battery cell 20, extend outwards, transversely extend, bend and attach to the outer surface of the support framework 40, extend towards the circuit board 30 and are connected to the circuit board 30.

Specifically, referring to fig. 3, the battery cell 20 is positioned in the supporting frame 40, the supporting frame 40 is provided with connection openings O1 and O2 corresponding to two end electrodes of the battery cell 20, respectively, starting ends of the first electrical connector 50 and the second electrical connector 60 are electrically connected to the two end electrodes of the battery cell 20 corresponding to the connection openings O1 and O2, respectively, specifically, the first electrical connector 50 and the second electrical connector 60 are made of a metal nickel sheet, which is connected to the two end electrodes of the battery cell 20 by spot welding, then the first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward transverse direction e, are bent, and then attach to the outer surface of the supporting frame 40 to extend and connect to the circuit board 30, and the first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward transverse direction e, and are bent to form a transverse extending bent section, as shown in a region in fig. 3.

The above-mentioned structural design makes first electrical connector 50 and second electrical connector 60 and the cell epidermis form interval distribution, and first electrical connector 50 and second electrical connector 60 link to each other with the cell 20 electrode, and obviously be conducting material, and support skeleton 40 is insulating material in this technical scheme, so, be separated by insulating material between electrically conductive first electrical connector 50 and second electrical connector 60 and the cell 20 epidermis, therefore, even the damage of cell 20 epidermis, can not take place the short circuit accident yet, play the effect of safe insulating protection.

In addition, since the power supply constructed by the power supply structure 100 is also required to be suitable for the power tool, which often involves large vibration during use, the first electrical connector 50 and the second electrical connector 60 are respectively arranged along the outward transverse direction

The extension is outstanding to bend, form the effect that the section of bending of transversely extending can also play effective damping vibration, avoid the great vibration that involves in the electric tool use to constitute the influence to inside.

As shown in fig. 2, a gap L is formed between the circuit board 30 and the supporting frame 40, the first electrical connector 50 and the second electrical connector 60 respectively include an extending connection section (50a, 60a) located at the gap, and the extending connection section (50a, 60a) extends along the length direction of the battery cell 20 and is connected to the circuit board 30 at the tail end.

Specifically, the supporting frame 40 is provided with mounting grooves 40a and 40b corresponding to the

extension connecting ends

50a and 60a, the mounting grooves 40a and 40b extend along the outer surface of the supporting frame 40, the

extension connecting ends

50a and 60a are respectively mounted in the mounting grooves 40a and 40b correspondingly, and are configured with positioning posts and positioning holes for matching so as to perform mounting and positioning.

The installation grooves 40a and 40b provided on the support frame 40 can effectively reduce the overall height of the power supply.

In addition, the

extension connection segments

50a and 60a extend along the outer surface of the support frame 40, and the

extension connection segments

50a and 60a are insulated and spaced from the skin of the battery cell 20 by the support frame 40.

Moreover, the tail ends of the extended connection segments (50a, 60a) at the two opposite ends, which are connected to the circuit board 30, are respectively located at two opposite sides of the circuit board 30, specifically referring to fig. 3, the tail end of the extended connection segment 50a extends along the direction n to one side of the circuit board 30 and is connected to the circuit board 30, and the tail end of the extended connection segment 60a extends along the direction m to the other opposite side of the circuit board 30 and is connected to the circuit board 30, so that the

extended connection segments

50a and 60a are far away from each other at the tail end portions, thereby ensuring the electrical connection safety.

[ example 2 ]

As shown in fig. 4, a power supply structure 100 includes a casing 10, a battery cell 20 and a circuit board 30 disposed inside the casing 10, wherein the power supply structure 100 further includes a supporting framework 40 adapted to mount and position the battery cell 20 and the circuit board 30; a first end and a second end of the battery cell 20, which are opposite to each other along the length direction, are respectively connected with the supporting framework 40 in a positioning manner;

specifically, referring to fig. 5, the supporting framework 40 has an arc surface 40d adapted to the outer surface of the battery cell 20, the arc surface 40d extends along the length direction of the battery cell 20, and end limiting

plates

40e and 40f are disposed at two ends of the length direction of the battery cell 20, the limiting

plates

40e and 40f, and the arc surface 40d cooperate to form a positioning region of the battery cell 20, and cooperate with the casing 10 to fix and limit the battery cell 20 in the positioning region.

A third electrical connector 70 disposed at one end of the circuit board 30, the third electrical connector 70 being configured to be electrically connected to an electrical device, such that power from the battery cell may be provided to the electrical device through the third electrical connector 70; correspondingly, the supporting framework 40 is provided with a mounting position 40c corresponding to the third electrical connector 70, as shown in fig. 4.

More specifically, referring to fig. 6 and 7, the third electrical connector 70 is a pin terminal 70a that includes at least two pin connection posts 70a-1 adapted to connect with the circuit board 30, and the support frame 40 is raised upwardly to form a mounting area 40c that mates with the pin terminal 70 a.

The extended protruding portion of the pin terminal 70a near the supporting frame 40 is provided with a lug 70a-2, and in this embodiment, the lug 70a-2 is fixedly connected to the circuit board 30. Of course, a fixed connection to the support frame 40 is also an option.

In addition, the third electrical connector 70 may further include a USB interface 70b, and the circuit board 30 is provided with a mounting notch 30a corresponding to the USB interface 70 b.

The pin terminal 70a is electrically connected with the external electric equipment through a pin connecting post 70a-1 connected with the circuit board 30, the pin connecting post 70a-1 at least comprises a positive discharging electrode and a negative discharging electrode which are suitable for discharging the positive and negative electrodes, and the pin terminal can also comprise a signal terminal which is in communication connection with the electric equipment and is suitable for signal transmission. The pin terminal 70a is generally used for power tool equipment, and the discharge current thereof is generally large.

In addition, the USB interface 70b is configured to be generally used for supplying power to 3C electric equipment or electronic equipment around 3C, and preferably, type-C is adopted, and the battery cell 20 can be charged by type-C.

[ example 3 ]

As shown in fig. 4 and 6, and fig. 7, a power supply structure 100 includes a casing 10, a battery cell 20 and a circuit board 30 disposed inside the casing 10, wherein the power supply structure 100 further includes a supporting framework 40 adapted to mount and position the battery cell 20 and the circuit board 30; a first end and a second end of the battery cell 20, which are opposite to each other along the length direction, are respectively connected with the supporting framework 40 in a positioning manner;

a third electrical connector 70 disposed at one end of the circuit board 30, the third electrical connector 70 being configured to be electrically connected to an electrical device, such that power from the battery cell may be provided to the electrical device through the third electrical connector 70;

the third electrical connector 70 includes a pin terminal 70a and a USB port 70b disposed at the same end, the pin terminal 70a is formed with a slot 70a-3 at one side for positioning and mounting the USB port 70b, and the USB port 70b is adapted to be mounted in the slot 70a-3 and connected to the circuit board 30.

In addition, the pin terminal 70a is formed by integrally injection molding, and the pin connection post 70a-1 is injection molded and packaged in the plastic body, so that the dustproof and waterproof effects can be effectively achieved.

In addition, the pin terminal 70a and the USB port 70b respectively include extension protruding sections (70a-4, 70b-1), the extension protruding sections (70a-4, 70b-1) are sleeved with sealing sleeves 80 adapted thereto, and the sealing sleeves 80 are clamped between the third electrical connector 70 and the inner wall of the housing 10.

According to the arrangement, on one hand, the pin type terminal 70a is used for sealing the pin type connecting column 70a-1 power connection port for dust and water prevention, and the sealing sleeve 80 is used for sealing the installation gap of the third electric connector 70, so that water can be effectively prevented, and the waterproof grade can reach ipx7 standard.

In addition, referring to fig. 7 and 8, a side of the sealing sleeve 80 close to the inner wall of the housing 10 is provided with a protruding edge portion 80a, the inner wall of the housing 10 is correspondingly provided with a side groove 10a adapted to the inner wall, and the edge portion 80a is inserted into the side groove 10 a; so that the sealing sleeve 80 is clamped in the gap between the third electrical connector 70 and the inner wall of the housing 10 to effectively seal.

The circuit board 30 is spaced from the supporting frame 40, the circuit board 30 is provided with a mounting notch 30a corresponding to the USB interface 70b, and the USB interface 70b is correspondingly mounted in the mounting notch 30a and has an upper surface substantially flush with an upper surface of the circuit board 30.

The circuit board 30 and the supporting framework 40 are arranged at intervals, the minimum distance between the circuit board 30 and the supporting framework is H, and H is less than or equal to 2 mm.

This minimum distance H ensures, on the one hand, that the USB interface 70b has sufficient installation space and remains substantially flush with the upper surface of the circuit board 30 to reduce the overall height of the power supply.

In addition, it is worth mentioning:

the circuit board 30 is supported on the supporting framework 40 at intervals, and the minimum distance between the circuit board 30 and the supporting framework 40 is not more than 2 mm; through the setting of interval H, effectively guarantee to have certain radiating effect and electron installation space between circuit board 3 and electric core 2.

The width of the circuit board 30 is Y, the diameter of the battery cell 20 is D, and the width Y is 95% or less of the width D; in this embodiment, the width Y of the circuit board 30 is 20mm, and the diameter D of the battery cell 20 is 21 mm.

In addition, the length of the battery cell 20 is L3, the length of the battery pack 100 is L4, and L4 is 1.3 times or less of L3; the diameter of the battery core is D, the height of the battery pack is M, and M is 1.8 times or less than D; in a specific embodiment, the length of the battery cell 20 is 70mm, and the length of the battery pack 100 is 82 mm; the diameter of the battery core 20 is 21mm, and the height of the battery pack 100 is 36 mm; adopt above-mentioned structure setting, can effectively guarantee that the structure of the battery package of this embodiment is small and exquisite, when using as portable power source, portable can be applicable to various small-size electric tool simultaneously.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a power supply structure, includes the casing, sets up inside electric core and the circuit board of casing, its characterized in that:

2. The power supply structure according to claim 1, characterized in that: the circuit board and the support framework are provided with a gap, the first electric connector and the second electric connector respectively comprise an extension connecting section located at the gap, and the extension connecting section extends along the length direction of the battery cell and is connected with the circuit board at the tail end.

3. The power supply structure according to claim 2, characterized in that: the extension connecting section extends along the outer surface of the support skeleton.

4. The power supply structure according to claim 2, characterized in that: the extending connecting sections at the two opposite ends are connected with the tail end of the circuit board respectively at two opposite sides of the circuit board.

5. The utility model provides a power supply structure, includes the casing, sets up inside electric core and the circuit board of casing, its characterized in that:

6. The power supply structure according to claim 5, characterized in that: the third electric connector is a pin terminal and comprises at least two pin connecting columns which are suitable for being connected with the circuit board, and the supporting framework extends upwards to form a convex part to form a mounting area matched with the pin terminal.

7. The power supply structure according to claim 5, characterized in that: the pin terminal is provided with a lug near the extending convex part of the supporting framework, and the lug is fixedly connected with the circuit board and/or the supporting framework.

8. The power supply structure according to claim 5, characterized in that: the third electric connector comprises a USB interface, and the circuit board is provided with an installation notch corresponding to the USB interface.

9. The utility model provides a power supply structure, includes the casing, sets up inside electric core and the circuit board of casing, its characterized in that:

10. The power supply structure according to claim 9, characterized in that: the pin type terminal and the USB interface respectively comprise an extension protruding section, the extension protruding section is sleeved with a sealing sleeve matched with the extension protruding section, and the sealing sleeve is clamped between the third electric connector and the inner wall of the shell.

11. The power supply structure according to claim 10, characterized in that: the sealing sleeve is provided with a convex edge part on one side close to the inner wall of the shell, the inner wall of the shell is correspondingly provided with a side groove matched with the inner wall of the shell, and the edge part is inserted into the side groove.

12. The power supply structure according to claim 9, characterized in that: the circuit board and the supporting framework are arranged at intervals, the circuit board is provided with an installation gap corresponding to the USB interface, the USB interface is correspondingly installed in the installation gap, and the upper surface of the USB interface is basically flush with the upper surface of the circuit board.

The power supply structure according to claim 12, characterized in that: the circuit board and the supporting framework are arranged at intervals, the minimum distance between the circuit board and the supporting framework is H, and H is less than or equal to 2 mm.