CN215377782U

CN215377782U - Power supply structure

Info

Publication number: CN215377782U
Application number: CN202121491484.6U
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: 2021-07-01
Publication date: 2021-12-31
Anticipated expiration: 2031-07-01
Also published as: CN113594732A; CN212848977U; CN113991343A

Abstract

The present invention provides a power supply structure, comprising: the battery cell, the framework and the circuit board are sequentially connected along the radial direction of the battery cell, and the framework is respectively provided with a first connecting opening and a second connecting opening relative to the positive pole and the negative pole of the battery cell; a first electrical connector arranged at the first connection opening; a second electrical connector disposed at the second connection opening; the framework comprises a first surface, the first surface is provided with two positioning grooves, and the two positioning grooves are respectively arranged at two ends of the framework along the length direction of the axis of the battery cell; the first electric connector and the second electric connector are respectively connected to two ends of the battery cell at the first connection opening and the second connection opening correspondingly, the first electric connector and the second electric connector are respectively bent towards the first surface to extend to form a bending extension section, each bending extension section is positioned in a positioning groove at the corresponding end, one end, away from the corresponding connection opening, of each bending extension section is respectively provided with an insertion part, the position, corresponding to the insertion part, on the circuit board is provided with an insertion port, and the insertion part is correspondingly matched with the insertion port.

Description

Power supply structure

The present invention claims priority from a patent application filed by the national intellectual property office of the people's republic of china on 27/7/2020, having application number CN2020215069176 entitled "power supply architecture", the entire contents of which are incorporated herein by reference.

Technical Field

The utility model relates to the field of power supplies, in particular 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.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power supply structure.

Specifically, the utility model is realized by the following technical scheme:

a first aspect of an embodiment of the present invention provides a power supply structure, including:

the battery cell, the framework and the circuit board are sequentially connected in the radial direction of the battery cell, the framework extends along the length direction of the axis of the battery cell, and the framework is respectively provided with a first connecting opening and a second connecting opening relative to the positive pole and the negative pole of the battery cell;

the first electric connector is arranged at the first connecting opening and connects one ends of the positive electrode and the negative electrode of the battery core to the circuit board;

the second electric connector is arranged at the second connecting opening and connects the other ends of the positive electrode and the negative electrode of the battery core to the circuit board;

the framework comprises a first surface, the first surface faces the circuit board, the first surface is provided with two positioning grooves, and the two positioning grooves are respectively arranged at two ends of the framework along the length direction of the axis of the battery cell;

the first electric connector and the second electric connector are respectively and correspondingly connected to two ends of the battery cell at the first connecting opening and the second connecting opening and respectively bend and extend towards the first surface to form bending extension sections, each bending extension section is positioned in a positioning groove at the corresponding end, one end, far away from the corresponding connecting opening, of each bending extension section is respectively provided with an insertion part, a position, corresponding to the insertion part, on the circuit board is provided with an insertion port, and the insertion parts are correspondingly matched with the insertion ports.

Optionally, the first electrical connector and the second electrical connector are both sheet-like.

Optionally, the shape of the positioning groove is adapted to the shape of the corresponding bending extension section.

Optionally, each bent extension segment includes a main segment disposed near one end of the corresponding connection opening and a connection segment disposed at one end of the main segment far away from the corresponding connection opening, the connection segment is bent relative to the main segment, and the insertion portion is disposed at one end of the connection segment far away from the main segment.

Optionally, one end of each bent extension section, which is far away from the corresponding connection opening, is provided with a first fixing portion, a corresponding position of each positioning groove is provided with a second fixing portion, and the first fixing portion is in concave-convex fit with the second fixing portion.

Optionally, the first fixing portion and the insertion portion are oppositely arranged on two sides of the bending extension section.

Optionally, each insertion connection part is arranged in a bending way relative to the corresponding bending extension section.

Optionally, the two plugging portions are parallel to each other, the two plugging portions are respectively located on two sides of the first surface, and the axial length direction of the battery cell is parallel to the plugging portions.

Optionally, the insertion part is electrically matched with the insertion port, so that the corresponding electrical connector is electrically connected with the circuit board.

Optionally, each insertion part includes two contact terminals, the two contact terminals of each insertion part are arranged at intervals along the length direction of the axis of the battery cell, an electrical contact part is arranged at a position of the inner side wall of the insertion opening corresponding to each contact terminal, the electrical contact parts are located at two sides of the corresponding contact terminals, and the electrical contact parts are in contact fit with the corresponding contact terminals.

Optionally, the power supply structure further includes a temperature sensor for detecting a temperature of the battery cell, and the temperature sensor is electrically connected to the circuit board;

the framework further comprises a shielding part, the shielding part is located on one side of the outer side wall of the battery cell, and the temperature sensor is clamped between the shielding part and the outer side wall of the battery cell.

Optionally, the power supply structure further includes a signal transmission line, one end of the signal transmission line is connected to the temperature sensor, and the other end of the signal transmission line is connected to one side of the circuit board facing the framework;

the framework is further provided with a positioning part which is positioned between the shielding part and the position of the framework for connecting the signal transmission line, and one part of the signal transmission line is attached to one side surface of the positioning part facing the battery core.

According to the technical scheme provided by the first aspect of the embodiment of the utility model, the structures of the first electric connector and the second electric connector are skillfully designed, so that the positive electrode and the negative electrode of the battery cell are connected to the circuit board, the first electric connector and the second electric connector are respectively and stably fixed to the framework through the matching of the bent extension section and the positioning groove, and the first electric connector and the second electric connector are respectively and stably connected with the circuit board through the matching of the insertion part and the insertion port; and, set up positioning groove on the skeleton and can effectively reduce power structure's overall height.

A second aspect of the embodiment of the present invention provides a power supply structure, including a casing, a battery cell and a circuit board disposed inside the casing, the power supply structure further including a framework adapted to mount and position the battery cell 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 framework in a positioning way;

the framework comprises a first surface, and the first surface is arranged towards the circuit board;

and the first electric connector and the second electric connector are respectively and correspondingly arranged at the electrodes of the first end and the second end of the battery cell, extend towards the first surface, bend and attach to the first surface, extend towards the circuit board and are connected to the circuit board.

Optionally: the circuit board and the framework are provided with gaps, the first electric connector and the second electric connector respectively comprise bending extension sections located at the gaps, and the bending extension sections extend along the length direction of the battery cell and are connected with the circuit board at tail ends.

Optionally, the two bent extending sections are respectively located at two opposite sides of the circuit board.

According to the technical scheme provided by the second aspect of the embodiment of the present invention, the first electrical connector and the second electrical connector are distributed at intervals with the cell skin, and the first electrical connector and the second electrical connector are connected with the cell electrode and are obviously made of a conductive material.

A third aspect of the embodiments of the present invention provides a power supply structure, including a casing, a battery cell and a circuit board disposed inside the casing, where the power supply structure further includes a framework adapted to mount and position the battery cell 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 framework in a positioning way;

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 can be provided to the electrical consumer through the third electrical connector;

and the framework is provided with a mounting position corresponding to the third electric connector.

Optionally, the third electrical connector is a pin terminal including at least two pin connection posts adapted to connect with the circuit board, and the backbone is raised upwardly to form a mounting area for mating with the pin terminal.

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

Optionally, the third electrical connector includes a USB interface, and the circuit board is provided with a mounting notch corresponding to the USB interface.

According to the technical scheme provided by the third aspect of the embodiment of the utility model, the circuit board and the battery cell are simply installed and positioned through the framework, the electrodes at two ends of the battery cell are connected with the circuit board, and meanwhile, the framework is provided with the installation position corresponding to the third electric connector, so that the overall structure layout is simple, and the assembly is simple and convenient.

A fourth aspect of the embodiments of the present invention provides a power supply structure, including a casing, a battery cell and a circuit board that are disposed inside the casing, the power supply structure further including a framework adapted to mount and position the battery cell 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 framework in a positioning way;

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.

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

Optionally, one side of the sealing sleeve, which is close to the inner wall of the housing, is provided with a convex edge portion, the inner wall of the housing is correspondingly provided with a side groove adapted to the inner wall of the housing, and the edge portion is inserted into the side groove.

Optionally, the circuit board and the 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 substantially flush with the upper surface of the circuit board.

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

According to the technical scheme provided by the fourth aspect of the embodiment of the utility model, the pin terminal and the USB interface are simultaneously arranged, so that the power supply structure can be adapted to different electric equipment, power is supplied to different electric equipment, and the applicability of the battery structure is wider.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is an exploded view of a power supply configuration shown in an exemplary embodiment of the present invention;

FIG. 2 is a cross-sectional view of one power supply configuration shown in an exemplary embodiment of the utility model;

FIG. 3 is a partial exploded view of one power supply configuration shown in an exemplary embodiment of the utility model;

FIG. 4 is a schematic diagram of a portion of a power supply configuration in accordance with an exemplary embodiment of the present invention;

FIG. 5 is a schematic diagram of a skeletal structure shown in an exemplary embodiment of the present invention;

FIG. 6 is an exploded view of a portion of one power supply configuration shown in an exemplary embodiment of the utility model;

FIG. 7 is an exploded view of a portion of one power supply configuration shown in an exemplary embodiment of the utility model;

fig. 8 is a cross-sectional view of a housing shown in an exemplary embodiment of the utility model.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The power supply structure of the present invention will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

[ 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 framework 40 adapted to mount and position the battery cell 20 and the circuit board 30; the first end and the second end of the battery cell 20, which are opposite to each other along the length direction, are respectively connected with the framework 40 in a positioning manner.

Wherein the frame 40 includes a first surface disposed toward the circuit board 30.

And a first electrical connector 50 and a second electrical connector 60 which are respectively arranged at the electrodes at the first end and the second end of the battery cell 20, bent towards the first surface, attached to the first surface and extended towards the circuit board 30 to be connected to the circuit board 30.

Specifically, referring to fig. 3, the battery cell 20 is positioned in the frame 40, the frame 40 is provided with connection openings O1 and O2 corresponding to the two end electrodes of the battery cell 20, respectively, the 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 metal nickel sheets, which are 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 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, so as to form a transverse extension bending section, as shown in a region in fig. 3.

The above-mentioned structural design makes first electric connector 50 and second electric connector 60 and cell epidermis form interval distribution, and first electric connector 50 and second electric connector 60 link to each other with the cell 20 electrode, and obviously be conducting material, and skeleton 40 is insulating material in this technical scheme, so, separates by insulating material between electrically conductive first electric connector 50 and second electric 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 insulation protection.

In addition, since the power supply formed by the power supply structure 100 is also required to be suitable for an electric tool, and the electric tool often involves large vibration during use, 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 transversely extending bending section, which can also play a role in effectively damping vibration, so as to avoid the influence of the large vibration involved during use of the electric tool on the inside.

As shown in fig. 2, a gap L is formed between the circuit board 30 and the frame 40, the first electrical connector 50 and the second electrical connector 60 respectively include bending extension sections (50a, 60a) located at the gap, and the bending extension sections (50a, 60a) extend along the length direction of the battery cell 20 and are connected to the circuit board 30 at the tail end.

Specifically,

positioning grooves

40a and 40b corresponding to the extension connecting ends 50a and 60a are formed in the framework 40, the

positioning grooves

40a and 40b extend along the outer surface of the framework 40, the extension connecting ends 50a and 60a are correspondingly installed in the

positioning grooves

40a and 40b respectively, and positioning columns and positioning holes are configured to match so as to perform installation and positioning.

The

positioning grooves

40a and 40b are arranged on the framework 40, so that the overall height of the power supply can be effectively reduced.

In addition, the

bent extensions

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

bent extensions

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

Moreover, the tail ends of the bending extensions (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 bending extension 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 bending extension 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

bending extensions

50a and 60a are separated 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 frame 40 adapted to mount and position the battery cell 20 and the circuit board 30; the first end and the second end of the battery cell 20, which are opposite to each other along the length direction, are respectively connected with the framework 40 in a positioning manner.

Specifically, referring to fig. 5, the frame 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 frame 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 backbone 40 is upwardly projecting 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 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 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 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 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 interface 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 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 framework 40 are arranged at intervals, the minimum distance between the circuit board and the 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 framework 40 at intervals, and the minimum distance between the circuit board 30 and the 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 20.

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 power supply structure 100 is L4, and L4 is 1.3 times or less of L3; the diameter of the battery cell is D, the height of the power supply structure 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 power supply structure 100 is 82 mm; the diameter of the battery cell 20 is 21mm, and the height of the power supply structure 100 is 36 mm; adopt above-mentioned structure setting, can effectively guarantee that the power structure of this embodiment's structure is small and exquisite, and when using as portable power source, portable can be applicable to various small-size electric tool simultaneously.

[ example 4 ]

Referring to fig. 1, fig. 3, fig. 4, and fig. 5, a power supply structure 100 includes a battery cell 20, a frame 40, a circuit board 30, a first electrical connector 50, and a second electrical connector 60, where the battery cell 20, the frame 40, and the circuit board 30 are sequentially connected in a radial direction of the battery cell 20.

In the embodiment of the present invention, the frame 40 extends along the axial length direction of the battery cell 20, and the frame 40 is provided with a first connection opening O1 and a second connection opening O2 respectively corresponding to the positive electrode and the negative electrode of the battery cell 20.

The first electrical connector 50 is disposed at the first connection opening O1, and the first electrical connector 50 is used to connect one end of the positive and negative poles of the battery cell 20 to the circuit board 30. The second electrical connector 60 is disposed at the second connection opening O2, and the second electrical connector 60 is used to connect the other ends of the positive and negative poles of the battery cell 20 to the circuit board 30. The positive and negative terminals of the battery cell 20 are connected to the circuit board 30 via the first electrical connector 50 and the second electrical connector 60.

The framework 40 includes a first surface, the first surface is disposed toward the circuit board 30, the first surface is provided with two positioning grooves (40a, 40b), and the two positioning grooves (40a, 40b) are respectively disposed at two ends of the framework along the axial length direction of the battery cell.

The first electrical connector 50 and the second electrical connector 60 are respectively correspondingly connected to two ends of the battery core at the first connection opening O1 and the second connection opening O2, and the first electrical connector 50 and the second electrical connector 60 are respectively bent and extended towards the first surface to form bent extension sections (50a, 60a), each bent extension section is positioned in a positioning groove (40a, 40b) of the corresponding end, specifically, the bent extension section 50a is positioned in the positioning groove 40a, and the bent extension section 60a is positioned in the positioning groove 40 b.

One end of each bent extension section (50a, 60a), which is far away from the corresponding connecting opening (O1, O2), is provided with a plug part (50b, 60b), the position, corresponding to the plug part (50b, 60b), on the circuit board 30 is provided with a plug port (30a, 30b), and the plug part (50b, 60b) is correspondingly matched with the plug port (30a, 30 b). Specifically, the insertion part 50b is inserted into the insertion port 30a, and the insertion part 60b is inserted into the insertion port 30 b.

In the power supply structure of the embodiment of the utility model, by skillfully designing the structures of the first electrical connector 50 and the second electrical connector 60, on one hand, the positive electrode and the negative electrode of the battery cell 20 are connected to the circuit board 30, on the other hand, the first electrical connector 50 and the second electrical connector 60 are respectively and stably fixed to the framework 40 by the matching of the bent extension sections (50a, 60a) and the positioning grooves (40a, 40b), and the first electrical connector 50 and the second electrical connector 60 are respectively and stably connected to the circuit board 30 by the matching of the plugging portions (50b, 60b) and the plugging ports (30a, 30 b); moreover, the

positioning grooves

40a and 40b provided on the frame 40 can effectively reduce the overall height of the power supply structure 100.

As described above, the battery cell 20 is limited by the frame 40, and in addition, the positive and negative ends of the battery cell 20 are connected to the circuit board 30 through the first electrical connector 50 and the second electrical connector 60, and the two ends of the first electrical connector 50 and the second electrical connector 60 are respectively fixedly connected to the battery cell 20 and the circuit board 30, for example, a welding connection manner is adopted, so that the limitation and fixation of the battery cell 20 and the frame 40 are realized.

The battery cell 20 may be a 21700 battery cell or a 18650 battery cell, the first electrical connector 50 and the second electrical connector 60 are made of a conductive material, and the positive and negative electrode connections of the battery cell corresponding to the first electrical connector 50 and the second electrical connector 60 may be fixed by spot welding.

Optionally, the first electrical connector 50 and the second electrical connector 60 are both sheet-shaped, for example, the first electrical connector 50 and the second electrical connector 60 are both nickel sheets. In other embodiments, the first electrical connector 50 and the second electrical connector 60 can be conductive structures made of other conductive materials, such as plates or other shapes.

For example, the first electrical connector 50 and the second electrical connector 60 are made of metallic nickel sheets, which are spot-welded to both end electrodes of the battery cell 20.

Then, the first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward transverse direction e, and are bent, and then stick to the outer surface of the framework 40 to extend towards the circuit board 30 and be connected therewith, 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, so as to form a transversely extending bent section.

In addition, the power structure 100 is suitable for an electric tool, and the electric tool often involves large vibration during use, so that 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 bending section, which can also play a role in effectively damping vibration, and avoid the influence of the large vibration involved during use on the inside of the electric tool.

The shape of the positioning grooves (40a, 40b) is matched with the shape of the corresponding bending extension sections (50a, 60a), wherein the shape of the positioning groove (40 a) is matched with the shape of the bending extension section (50 a), and the shape of the positioning groove (40 b) is matched with the shape of the bending extension section (60 a), so that the bending extension sections (50a, 60a) are positioned better. Optionally, each bent extension (50a, 60a) comprises a main body segment disposed near an end of the corresponding connection opening (O1, O2) and a connection segment disposed at an end of the main body segment away from the corresponding connection opening (O1, O2), the connection segment is bent with respect to the main body segment, for example, the connection segment is disposed perpendicular to the main body segment, and the insertion portion is disposed at an end of the connection segment away from the main body segment, and the bent extension (50a, 60a) is configured to be better positioned to the frame 40, so that the first electrical connector 50 and the second electrical connector 60 are better positioned to the frame 40.

Referring to fig. 3 and 4 again, one end of each bent extension (50a, 60a) far away from the corresponding connecting opening (O1, O2) is respectively provided with a first fixing part (50c, 60c), a corresponding position of each positioning groove (40a, 40b) is provided with a second fixing part (40a-1, 40b-1), and the first fixing part (50c, 60c) is in concave-convex fit with the second fixing part (40a-1, 40 b-1). Specifically, a first fixing portion 50c is disposed at an end of the bending extension section 50a away from the first connection opening O1, a second fixing portion 40a-1 is disposed at a corresponding position of the positioning groove 40a, a first fixing portion 60c is disposed at an end of the bending extension section 60a away from the second connection opening O2, and a second fixing portion 40b-1 is disposed at a corresponding position of the positioning groove 72, wherein the first fixing portion 50c is in concave-convex fit with the second fixing portion 40a-1, and the first fixing portion 60c is in concave-convex fit with the second fixing portion 40 b-1. The first fixing parts (50c, 60c) and the second fixing parts (40a-1, 40b-1) are matched in a concave-convex mode, so that the bent extension sections (50a, 60a) are better positioned to the framework 40, and the first electric connector 50 and the second electric connector 60 are better positioned to the framework 40.

Optionally, the first fixing portions (50c, 60c) are fixing holes, and the second fixing portions (40a-1, 40b-1) are convex columns. In other embodiments, the first fixing portion (50c, 60c) is a convex pillar, and the second fixing portion (40a-1, 40b-1) is a fixing hole.

The first fixing portions (50c, 60c) and the insertion portions (50b, 60b) may be disposed at two sides of the bending extension sections (50a, 60a) relatively, specifically, the first fixing portions 50c and the insertion portions 50b are disposed at two sides of the bending extension sections 50a relatively, and the first fixing portions 60c and the insertion portions 60b are disposed at two sides of the bending extension sections 60a relatively, so that the bending extension sections (50a, 60a) are better positioned to the frame 40 and the circuit board 30, and the first electrical connector 50 and the second electrical connector 60 are better positioned to the frame 40 and the circuit board 30.

Each insertion part (50b, 60b) is bent relative to the corresponding bending extension section (50a, 60a), specifically, the insertion part 50b is bent relative to the bending extension section 50a, and the insertion part 60b is bent relative to the bending extension section 60 a. For example, the mating portion 50b is disposed perpendicular to the bent extension 50a, and the mating portion 60b is disposed perpendicular to the bent extension 60a, so that the bent extensions (50a, 60a) are better positioned to the circuit board 30, and thus the first and second

electrical connectors

50 and 60 are better positioned to the circuit board 30.

In some embodiments, the two insertion portions (50b, 60b) are parallel to each other, the two insertion portions (50b, 60b) are respectively located at two sides of the first surface, and the axial length direction of the battery cell 20 is parallel to the insertion portions (50b, 60b), so that the structural design is novel and the layout is simple. In other embodiments, the two mating parts (50b, 60b) may not be parallel, and the two mating parts (50b, 60b) may be located on the same side of the first surface.

Optionally, the mating parts (50b, 60b) are electrically engaged with the mating interfaces (30a, 30b) to electrically connect the corresponding electrical connectors with the circuit board 30, and the first electrical connector 50 and the second electrical connector 60 are respectively and stably electrically connected with the circuit board 30. The insertion portion 50b is electrically matched with the insertion port 30a, so that the first electrical connector 50 is electrically connected to the circuit board 30, and thus the electrical connection between one end of the positive electrode and the negative electrode of the battery cell 20 and the circuit board 30 is realized through the first electrical connector 50. The inserting portion 60b is electrically matched with the inserting port 30b, so that the second electrical connector 60 is electrically connected with the circuit board 30, and thus the electrical connection between the other end of the positive electrode and the negative electrode of the battery cell 20 and the circuit board 30 is realized through the second electrical connector 60, for example, each inserting portion (50b, 60b) respectively comprises two contact terminals, the two contact terminals of each inserting portion (50b, 60b) are arranged at intervals along the length direction of the axis of the battery cell, the positions of the inner side walls of the inserting ports (30a, 30b) corresponding to each contact terminal are respectively provided with an electrical contact portion, the electrical contact portions are positioned on two sides of the corresponding contact terminals, the electrical contact portions are in contact matching with the corresponding contact terminals, and the electrical connection between the inserting portions (50b, 60b) and the inserting ports (30a, 30b) is realized through the matching of the contact terminals and the electrical contact portions positioned on two sides of the corresponding contact terminals.

The plug portion 60b is soldered after being plugged and matched with the plug port 30b, so that the stability of communication between the first electrical connector 50 and the second electrical connector 60 and the circuit board 30 is improved.

The power supply structure 100 further includes a temperature sensor, the temperature sensor is used for detecting the temperature of the battery cell 20, and the temperature sensor is electrically connected to the circuit board 30, so that the circuit board 30 can acquire the temperature of the battery cell 20 detected by the temperature sensor. Skeleton 40 still includes shielding portion 40g, and shielding portion 40g is located one side of the lateral wall of electric core 20, and temperature sensor presss from both sides and locates between shielding portion 40g and the lateral wall of electric core 20, so design, rational utilization power supply structure 100's inner space on the one hand, on the other hand forms effective protection and stabilizes temperature sensor spacing through shielding portion to temperature sensor.

Optionally, the temperature sensor is cylindrical; of course, in other embodiments, the temperature sensor may have other shapes.

Optionally, the shielding portion 40g is convex; in other embodiments, the shielding portion 40g may have other structures.

The power structure 100 may further include a signal transmission line 90, one end of the signal transmission line 90 is connected to the temperature sensor, and the other end is connected to a side of the circuit board 30 facing the frame 40. In this embodiment, the frame 40 is further provided with a positioning portion 40h, the positioning portion 40h is located between the shielding portion 40g and a position of the frame 40, where the position is used for connecting the signal transmission line 90, and a part of the signal transmission line 90 is attached to a side surface of the positioning portion 40h facing the battery cell 20. The signal transmission lines 90 are limited by the positioning parts 40h, so that the arrangement of the signal transmission lines 90 is more attractive.

Referring to fig. 3, a notch 40i is formed in one side of the body of the frame 40, the notch 40i extends along the length direction of the axis of the battery cell 20, and the shielding portion 40g and the positioning portion 40h are formed in the notch 40i, so that the internal space of the power supply structure 100 is further utilized reasonably, and the miniaturization design of the frame 40 is facilitated.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A power supply structure, comprising:

the first electric connector and the second electric connector are respectively and correspondingly connected to two ends of the battery cell at the first connecting opening and the second connecting opening and respectively bend and extend towards the first surface to form bending extension sections, each bending extension section is positioned in a positioning groove at the corresponding end, one end, far away from the corresponding connecting opening, of each bending extension section is respectively provided with an insertion part, a position, corresponding to the insertion part, on the circuit board is provided with an insertion port, and the insertion part and the insertion port correspond to a matched circuit board.

2. The power supply structure of claim 1, wherein the first electrical connector and the second electrical connector are each in the form of a blade.

3. The power supply structure according to claim 1 or 2, wherein the shape of the positioning groove is adapted to the shape of the corresponding bent extension.

4. The power supply structure according to claim 3, wherein each bent extension segment comprises a main segment disposed near an end of the corresponding connection opening and a connection segment disposed at an end of the main segment away from the corresponding connection opening, the connection segment is bent relative to the main segment, and the insertion portion is disposed at an end of the connection segment away from the main segment.

5. The power supply structure according to claim 1, wherein one end of each bent extension section away from the corresponding connection opening is provided with a first fixing portion, and a corresponding position of each positioning groove is provided with a second fixing portion, and the first fixing portion is in concave-convex fit with the second fixing portion.

6. The power supply structure of claim 5, wherein the first fixing portion and the insertion portion are disposed on two sides of the bent extension section.

7. The power supply structure of claim 1, wherein each of the mating portions is bent with respect to the corresponding bent extension.

8. The power supply structure according to claim 1 or 7, wherein the two insertion portions are parallel to each other, the two insertion portions are respectively located on two sides of the first surface, and the axial length direction of the battery cell is parallel to the insertion portions.

9. The power supply structure of claim 1, wherein the mating portion electrically mates with the mating interface such that the corresponding electrical connector electrically connects with the circuit board.

10. The power supply structure of claim 9, wherein each plug part comprises two contact terminals, the two contact terminals of each plug part are arranged at intervals along the length direction of the axis of the battery cell, an inner side wall of the plug port is provided with an electrical contact part corresponding to each contact terminal, the electrical contact parts are located on two sides of the corresponding contact terminals, and the electrical contact parts are in contact fit with the corresponding contact terminals.

11. The power supply structure of claim 1, further comprising a temperature sensor for detecting a temperature of the cell, the temperature sensor being electrically connected to the circuit board;

12. The power supply structure of claim 11, further comprising a signal transmission line, one end of the signal transmission line is connected to the temperature sensor, and the other end of the signal transmission line is connected to a side of the circuit board facing the frame;

13. A power supply structure comprises a shell, a battery core and a circuit board, wherein the battery core and the circuit board are arranged in the shell,

the power supply structure further comprises a 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 framework in a positioning way;

14. The power supply structure of claim 13, wherein a gap is formed between the circuit board and the frame, and the first electrical connector and the second electrical connector each include a bent extension section located at the gap, the bent extension section extending along a length direction of the cell and being connected to the circuit board at a tail end.

15. The power supply structure of claim 14, wherein the two bent extensions have ends connected to the circuit board at two opposite sides of the circuit board.

16. A power supply structure comprises a shell, a battery core and a circuit board, wherein the battery core and the circuit board are arranged in the shell,

17. The power structure of claim 16, wherein said third electrical connector is a pin terminal comprising at least two pin connection posts adapted to connect to said circuit board, said backbone upwardly extending projections forming mounting areas for mating with said pin terminals.

18. The power supply structure of claim 17, wherein: the pin terminal is provided with a lug near the extending convex part of the framework, and the lug is fixedly connected with the circuit board and/or the framework.

19. The power supply structure according to claim 16, wherein the third electrical connector comprises a USB interface, and the circuit board is provided with a mounting notch corresponding to the USB interface.

20. 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:

21. The power supply structure of claim 20, wherein the pin terminal and the USB port respectively include an extending protruding section, the extending protruding section is sleeved with a sealing sleeve adapted thereto, and the sealing sleeve is clamped between the third electrical connector and the inner wall of the housing.

22. The power supply structure of claim 21, wherein the sealing sleeve is provided with a protruding edge portion on a side close to the inner wall of the housing, the inner wall of the housing is correspondingly provided with a side groove adapted to the inner wall, and the edge portion is inserted into the side groove.

23. The power supply structure according to claim 21, wherein the circuit board is spaced from the frame, the circuit board has a mounting notch corresponding to the USB interface, and the USB interface is correspondingly mounted in the mounting notch and has an upper surface substantially flush with an upper surface of the circuit board.

24. The power supply structure of claim 23, wherein the circuit board is spaced from the frame at a minimum distance H that is less than or equal to 2 mm.