CN218039392U - Battery protection board and power supply device - Google Patents

Abstract

The embodiment of the application discloses battery protection board and power supply unit, the battery protection board sets up the connection piece through the electrical property on the circuit board, when using with the battery cooperation, through electrically conductive piece with the negative pole end of battery and battery protection board's connection piece electric connection, make battery accessible battery protection board discharge in order to supply power to domestic appliance, through setting up the interface that charges on the circuit board, accessible battery protection board charges to the battery, thereby realize the recycling of battery, and battery protection board and battery separately set up, compare with the design that sets up battery protection board in battery inside, battery capacity need not to realize through sacrificing the space, only need simple assembling to accomplish, the capacity of battery has been promoted, promote duration.

Description

Battery protection board and power supply device

Technical Field

The application relates to the technical field of battery protection boards, in particular to a battery protection board and a power supply device.

Background

At present, a large number of batteries used by household appliances are two 1.5v dry batteries which can only be used once and cannot be well recycled after being used, so that the environmental pollution is caused, and the rechargeable and reusable lithium iron phosphate batteries existing in the market are expensive in price and need to be purchased with a special charger for matching use, so that the use cost is high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a battery protection shield and power supply unit, can solve the problem that rechargeable battery replaces former dry battery and leads to use cost higher.

The embodiment of the application provides a battery protection shield, includes: the device comprises a shell, a positive contact piece is arranged at one end of the shell, and a negative contact piece is arranged at the other end of the shell; the circuit board is arranged at the inner side of the shell, one end of the circuit board is electrically connected with the positive contact piece, the other end of the circuit board is electrically connected with the negative contact piece, a connecting piece is electrically arranged on the circuit board, and the connecting piece is electrically connected with the negative contact piece through the circuit board; wherein the tab is configured to electrically connect with a negative terminal of a battery to cause the battery to discharge through the circuit board.

Optionally, the battery charging device further comprises a charging interface, the charging interface is electrically arranged on the circuit board, the charging interface is electrically connected with the connecting sheet through the circuit board, a through hole corresponding to the charging interface is formed in the shell, and the charging interface is configured to charge the battery through the charging interface.

Optionally, the battery management device further includes a management chip, where the management chip is electrically disposed on the circuit board to modulate the discharging voltage output by the battery and the charging voltage for charging the battery.

Optionally, the voltage regulator further comprises a voltage regulation chip, wherein the voltage regulation chip is electrically arranged on the circuit board, and the voltage regulation chip is electrically connected with the management chip through the circuit board so as to stabilize the voltage modulated by the management chip.

Optionally, the shell further comprises an elastic piece, one end of the elastic piece is abutted against the inner wall of the shell, and the other end of the elastic piece is abutted against the connecting piece.

Optionally, a frame body is convexly arranged on the inner wall of the shell facing the circuit board, the connecting sheet is arranged on the inner wall of the shell, the frame body faces one end of the circuit board and is open, and a gap is reserved between the end face of the open end and the circuit board; the end face of the opening end covers at least part of the connecting sheet in the orthographic projection of the plane where the circuit board is located, and the elastic piece is arranged on the inner side of the frame body.

Optionally, the battery further comprises a conductive piece, one end of the conductive piece is electrically connected with the connecting piece, and the other end of the conductive piece extends out of the shell to be electrically connected with the negative end of the battery; the surface of the shell is provided with a jack for the conductive piece to extend out.

Optionally, the housing includes a first housing and a second housing disposed opposite to each other, and the first housing and the second housing are butted to form the housing.

Simultaneously, this application still provides a power supply unit, includes: the battery compartment is internally provided with two or more battery tanks which are arranged in parallel, one end of the inner side of each battery tank is provided with a first contact pin, and the other end of the inner side of each battery tank is provided with a second contact pin; the battery protection board as described above, the battery protection board is disposed in the battery container, one end of the battery protection board is electrically connected to the first contact pin of the battery container, and the other end of the battery protection board is electrically connected to the second contact pin of the battery container; and the at least one battery is arranged in the rest of the battery tanks, the positive terminal of the battery is electrically connected with the first contact pin of the battery tank, the negative terminal of the battery is electrically connected with the second contact pin of the battery tank, and the connecting sheet in the battery protection board is electrically connected with the negative terminal of the battery through a conductive piece.

Optionally, the battery is a rechargeable battery; the shell of the battery protection plate is profiled with the battery.

The beneficial effects of this application lie in, a battery protection board and power supply unit are provided, the battery protection board sets up the connection piece through the electrical property on the circuit board, when using with the battery cooperation, through electrically conductive piece with the negative pole end of battery and the connection piece electric connection of battery protection board, make battery accessible battery protection board discharge in order to supply power to domestic appliance, through setting up the interface that charges on the circuit board, accessible battery protection board charges to the battery, thereby realize the recycling of battery, and battery protection board and battery separately set up, compare with the design that sets up battery protection board in battery inside, battery capacity need not to realize through sacrificing the space, only need simple assembling to accomplish, the capacity of battery has been promoted, promote duration.

Drawings

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

Fig. 1 is a schematic structural diagram of a battery protection plate according to an embodiment of the present application;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic view of a split structure of a battery protection plate according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of conductive members in a battery protection board according to an embodiment of the present application;

fig. 5 is a schematic structural view of a battery protection plate and a battery assembly according to an embodiment of the present disclosure;

fig. 6 is a schematic view illustrating a connection structure between the inside of a battery protection plate and a battery according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a power supply device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram illustrating a first angle of internal connection between a battery and a battery protection board in a power supply device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram illustrating a second angle of internal connection between a battery and a battery protection board in a power supply device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a battery compartment in a power supply device according to an embodiment of the present application.

Description of reference numerals:

100. a battery protection board, 110, a housing, 110a, a first housing, 110b, a second housing, 111, a positive contact piece, 112, a negative contact piece, 113, an insertion hole, 114, a frame body, 115, a through hole, 116, a cover plate, 120, a circuit board, 121, a first elastic sheet, 122, a second elastic sheet, 130, a connecting sheet, 131, a conductive piece, 1311, a first straight line portion, 1312, a second straight line portion, 1313, a first bending portion, 1314, a second bending portion, 132, an elastic piece, 140, a charging interface, 150, a management chip, 160, and a voltage stabilization chip;

200. battery, 201, positive terminal, 202, negative terminal;

300. the power supply device comprises a power supply device 310, a battery bin 311, a partition plate 312a, a first battery groove 312b, a second battery groove 313a, a first contact pin 313b and a second contact pin.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features.

The embodiment of the application provides a battery protection board, which is suitable for being used in cooperation with a lithium ion battery to realize a power management function, so that the batteries matched with the battery protection board, which are described below, are all lithium ion batteries. The battery protection board sets up the connection piece through the electrical property on the circuit board, when using with the battery cooperation, through the connecting piece electric connection with lithium ion battery's negative pole end and battery protection board of electrically conductive piece, realize lithium ion battery and battery protection board series connection, make lithium ion battery accessible battery protection board discharge in order to supply power to domestic appliance, through setting up the interface that charges on the circuit board, accessible battery protection board charges to lithium ion battery, thereby realize lithium ion battery's cyclic utilization, and battery protection board and lithium ion battery separately set up, compare with the design that sets up battery protection board in the battery inside, lithium ion battery capacity need not to realize through sacrificing the space, only need simple assembling to accomplish, lithium ion battery's capacity has been promoted, promote duration. The battery protection board can cooperate with AAA battery or AA battery of ordinary household electrical appliances to form an effective charging and discharging circuit, the battery does not need to be replaced, the battery can be repeatedly used for a plurality of times after being installed once, the capacity is larger, an additional charger does not need to be purchased, the battery can be charged by using a mobile phone charger, the price is low, and the use is simple and safe. As a typical application, the battery protection board can be matched with a model 10440 lithium battery or a model 14500 lithium battery, and the power supply device can be used as a power supply of household appliances or a power supply of children toys.

In an embodiment of the present application, referring to fig. 1 to 3, the battery protection plate 100 includes: a housing 110, a circuit board 120, and a connecting sheet 130.

In this embodiment, the casing 110 is a cylindrical body with two open ends, one open end of the casing 110 is provided with a positive contact piece 111, the other open end of the casing 110 is provided with a negative contact piece 112, and the positive contact piece 111 and the negative contact piece 112 are arranged opposite to each other. In this embodiment, the overall shape of the case 110 is designed to be a cylindrical body (or a column shape) in order to match the shape of the cylindrical battery, and if the battery has another shape, such as a square shape, the overall shape of the case 110 may be designed to match the shape of the battery. The housing 110 is made of an insulating material, such as ABS plastic.

Referring to fig. 2 and 3, the circuit board 120 is disposed inside the housing 110, specifically, the circuit board 120 is disposed inside the housing 110 along an axial direction of the housing 110, two ends of the circuit board 120 are respectively connected to two ends of the inner side of the housing 110, a first elastic sheet 121 is electrically disposed at a end of the surface of the circuit board 120 close to the positive contact piece 111, the circuit board 120 is electrically connected to the positive contact piece 111 through the first elastic sheet 121, a second elastic sheet 122 is electrically disposed at a end of the surface of the circuit board 120 close to the negative contact piece 112, and the circuit board 120 is electrically connected to the negative contact piece 112 through the second elastic sheet 122. The electrical property is disposed on the circuit board 120, that is, disposed on the circuit board 120 and electrically connected to the circuit board 120.

The connecting sheet 130 is a metal conductive sheet, and the connecting sheet 130 is electrically disposed on the surface of the circuit board 120. Specifically, the connecting plate 130 is electrically disposed on the surface of the circuit board 120 and is close to one end of the negative contact plate 112, the connecting plate 130 is electrically connected to the negative contact plate 112 through the circuit board 120, and the surface of the casing 110 is provided with a jack 113 corresponding to the connecting plate 130, referring to fig. 3, 4 and 6, the circuit board 120 is electrically connected to the battery 200 through the connecting plate 130, specifically, the connecting plate 130 is electrically connected to the negative end 202 of the battery 200 through a conductive member 131, the conductive member 131 is bent to the surface of the casing 110 through the surface of the battery 200 and extends into the inner side of the casing 110 through the jack 113 to be electrically connected to the connecting plate 130, so that the battery 200 is discharged through the circuit board 120, and as a whole, the battery 200 is discharged through the battery protection plate 100 to supply power to an electric device (such as a household appliance or a toy).

Referring to fig. 4, the conductive member 131 is a conductive metal sheet, the conductive member 131 includes a first straight portion 1311 and a second straight portion 1312 sequentially connected to each other, the first straight portion 1311 and the second straight portion 1312 are perpendicular to each other to form an L-shape, one end of the first straight portion 1311 away from the second straight portion 1312 is bent to form a first bent portion 1313, the first bent portion 1313 extends into the inner side of the case 110 through the insertion hole 113 and is electrically connected to the connection tab 130, one end of the second straight portion 1312 away from the first straight portion 1311 is bent to form a second bent portion 1314, and the second bent portion 1314 is electrically connected to the negative electrode 202 of the battery 200. In other implementations, the conductive member 131 may have other shapes, so long as the negative terminal 202 of the battery 200 is electrically connected to the connecting member 130.

Referring to fig. 2, 3 and 5, the battery protection plate 100 further includes an elastic member 132, the elastic member 132 is disposed inside the casing 110, one end of the elastic member 132 abuts against the surface of the connecting plate 130, the other end of the elastic member 132 abuts against the inner wall of the casing 110, the elastic member 132 is a spring, referring to fig. 5, the conductive member 131 extends into the casing 110 from the insertion hole 113 and extends into a space between the connecting plate 130 and the elastic member 132, the elastic member 132 pushes the conductive member 131 into the casing 110 to abut against the surface of the connecting plate 130, so as to achieve stable connection between the conductive member 131 and the connecting plate 130 and prevent the conductive member 131 from separating from the connecting plate 130. In other implementation manners, the conductive element 131 and the connecting sheet 130 may be welded first, and then the conductive element 131 is led out to the outside of the casing 110 through the insertion hole 113 and electrically connected to the negative electrode 202 of the battery 200, and the welding manner may be laser welding, soldering or solder welding.

In addition, referring to fig. 2 and fig. 3, a frame 114 is convexly disposed on the inner wall of the housing 110 facing the circuit board 120, the connecting sheet 130 is disposed on the inner wall, the frame 114 faces one end of the circuit board, and a gap is left between the end surface of the open end and the circuit board 120; the end surface of the open end covers at least part of the connecting sheet 130 in the orthographic projection of the plane of the circuit board 120, and the elastic member 132 is arranged inside the frame body 114, so that the stability of the elastic member 132 is ensured.

In addition, referring to fig. 2 and fig. 3, the battery protection board 100 further includes a charging interface 140, the charging interface 140 is electrically disposed on the surface of the circuit board 120, the surface of the housing 110 is provided with a through hole 115 corresponding to the charging interface 140, specifically, the charging interface 140 is disposed on the surface of the circuit board 120 located on the connecting piece 130 and the first elastic piece 121, the charging interface 140 is electrically connected to the connecting piece 130 through the circuit board 120, and the battery 200 electrically connected to the connecting piece 130 can be charged through the charging interface 140. The design of USB interface, type-c interface or Lightning interface can charge battery 200 through battery protection shield 100 through the cell-phone charger, need not to purchase special battery charger, reduces use cost.

In addition, in this embodiment, referring to fig. 3, the housing 110 includes a first housing 110a and a second housing 110b that are disposed opposite to each other, the first housing 110a and the second housing 110b are abutted to form the housing 110, the insertion hole 113 and the through hole 115 are disposed on the surface of the first housing 110a at a distance, and a cover 116 is inscribed in the through hole 115 for dust prevention, so that the cover 116 can be opened when charging.

The battery protection plate 100 further includes a management chip 150, the management chip 150 is electrically disposed on the surface of the circuit board 120, specifically, the management chip 150 is disposed on the surface of the circuit board 120 between the connection pad 130 and the charging interface 140, the connection pad 130 is electrically connected to the management chip 150 through the circuit board 120, the charging interface 140 is electrically connected to the management chip 150 through the circuit board 120, and the management chip 150 has a charging and discharging management function, that is, the management chip 150 can modulate a discharging voltage (i.e., an output voltage) output from the battery 200 to the circuit board 120 during a discharging process of the battery 200, and the management chip 150 can modulate a charging voltage (i.e., an input voltage) input to the battery 200 during a charging process of the battery 200, so as to prevent an electric device from being damaged due to an excessive output current, prevent the battery 200 from being damaged due to an excessive input current, and improve a service life.

In addition, referring to fig. 2 and 3, the battery protection board 100 further includes a voltage stabilizing chip 160, the voltage stabilizing chip 160 is electrically disposed on the surface of the circuit board 120, specifically, the voltage stabilizing chip 160 is disposed on the surface of the circuit board 120 between the connecting sheet 130 and the second elastic sheet 122, the voltage stabilizing chip 160 is electrically connected to the management chip 150 through the circuit board 120, the voltage stabilizing chip 160 stabilizes the voltage (discharge voltage and charge voltage) modulated by the management chip 150, for example, the voltage of the current output by the battery 200 to the circuit board 120 is 3.7 to 4.2V, and the voltage stabilizing chip 160 can stabilize 3V, so that the battery protection board 100 outputs a stable 3V voltage to the electric equipment, thereby ensuring the stability of power supply.

Meanwhile, referring to fig. 7 to 10, an embodiment of the present application further provides a power supply apparatus 300, where the power supply apparatus 300 includes: battery compartment 310, battery protection plate 100 and battery 200.

Referring to fig. 10, the battery compartment 310 is a box body with an opening on one side, a shielding plate (not shown in the figure) can be covered at the opening of the battery compartment 310, the shielding plate can be opened, a partition plate 311 is disposed in the middle of the battery compartment 310 in the width direction, the partition plate 311 is inscribed in the inner walls of the two ends of the battery compartment 310 in the length direction of the battery compartment 310, so as to partition the internal space of the battery compartment 310 into two battery slots arranged in parallel in the width direction of the battery compartment 310, that is, a first battery slot 312a and a second battery slot 312b, a first contact pin 313a and a second contact pin 313b are disposed at two ends of the inner side of the first battery slot 312a and two ends of the inner side of the second battery slot 312b, wherein the first contact pin 313a in the first battery slot 312a and the second contact pin 313b in the second battery slot 312b are disposed at the same side, the first contact pin 313a is a conductive plate, and the second contact pin 313b is a conductive spring.

When the battery protection plate is used, the battery 200 is placed in the first battery groove 312a, the positive end 201 of the battery 200 is electrically connected with the first contact pin 313a of the first battery groove 312a, the negative end 202 of the battery 200 is electrically connected with the second contact pin 313b of the first battery groove 312a, the battery protection plate 100 is placed in the second battery groove 312b, the positive contact piece 111 of the battery protection plate 100 is electrically connected with the first contact pin 313a of the second battery groove 312b, the negative contact piece 112 of the battery protection plate 100 is electrically connected with the second contact pin 313b of the second battery groove 312b, one end of the conductive piece 131 is electrically connected with the negative end 202 of the battery 200, the other end of the conductive piece 131 is electrically connected with the connecting piece 130 in the battery protection plate 100, and the battery 200 discharges through the battery 100 to supply power to electric equipment. When charging, open the shielding plate, outside charger charges to battery protection shield 100 through interface 140 that charges, realizes used repeatedly, and circulated use number of times >1000, and the battery low price can be changed.

In this embodiment, the battery 200 is a 10440 type lithium battery or a 14500 type lithium battery, and in other implementation manners, AAA size batteries and AA size batteries on other types of common household electrical appliances may be selected, and the battery 200 has a rechargeable function. The number of the batteries 200 may be plural, for example, two or more, and the two or more batteries 200 are electrically connected to the connecting plate 130 of the battery protection plate 100 through the conductive member 131 after the negative terminals are connected in parallel.

In addition, compared with the existing battery, because the battery protection board is arranged inside the battery, the capacity space of the battery is sacrificed, and the battery has small capacity, poor endurance and higher manufacturing cost, in the embodiment of the application, the battery protection board 100 and the battery 200 are separately designed, taking a lithium iron phosphate battery as an example, the capacity of the battery 200 is one time of the capacity of the lithium iron phosphate battery, the battery protection board 100 and the battery 200 can be assembled and assembled only through the conductive piece 131, the capacity of the battery 200 can be improved without sacrificing the internal space of the battery and a complex battery manufacturing process, the price is low, the use is simple and safe, the battery 200 can be charged through a mobile phone charger, a special charger is not required to be purchased, and the use cost is low.

The above detailed description is provided for a battery protection board and a power supply device according to the embodiments of the present application, and specific examples are applied herein to explain the principles and embodiments of the present application, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A battery protection plate, comprising:

the device comprises a shell, a positive contact piece is arranged at one end of the shell, and a negative contact piece is arranged at the other end of the shell; and

the circuit board is arranged at the inner side of the shell, one end of the circuit board is electrically connected with the positive contact piece, the other end of the circuit board is electrically connected with the negative contact piece, a connecting piece is electrically arranged on the circuit board, and the connecting piece is electrically connected with the negative contact piece through the circuit board;

wherein the tab is configured to electrically connect with a negative terminal of a battery to cause the battery to discharge through the circuit board.

2. The battery protection plate as claimed in claim 1, further comprising a charging interface electrically disposed on the circuit board, wherein the charging interface is electrically connected to the connecting tab through the circuit board, the housing has a through hole corresponding to the charging interface, and the charging interface is configured to charge the battery through the charging interface.

3. The battery protection plate as claimed in claim 2, further comprising a management chip electrically disposed on the circuit board for modulating a discharging voltage output by the battery and a charging voltage for charging the battery.

4. The battery protection plate as claimed in claim 3, further comprising a voltage stabilization chip electrically disposed on the circuit board, wherein the voltage stabilization chip is electrically connected to the management chip through the circuit board to stabilize the voltage modulated by the management chip.

5. The battery protection plate as claimed in claim 1, further comprising an elastic member, one end of which abuts against the inner wall of the case, and the other end of which abuts against the connecting piece.

6. The battery protection plate as claimed in claim 5, wherein a frame is protruded from an inner wall of the case toward a side of the circuit board where the connecting piece is disposed, the frame being open toward one end of the circuit board, and a gap is left between an end face of the open end and the circuit board;

the end face of the opening end covers at least part of the connecting sheet in the orthographic projection of the plane where the circuit board is located, and the elastic piece is arranged on the inner side of the frame body.

7. The battery protection plate as claimed in claim 6, further comprising a conductive member, one end of which is electrically connected to the connecting piece, and the other end of which protrudes to the outside of the case to be electrically connected to the negative electrode terminal of the battery;

the surface of the shell is provided with a jack for the conductive piece to extend out.

8. The battery protection plate as claimed in any one of claims 2 to 7, wherein the case body includes a first case and a second case disposed oppositely, and the first case and the second case are butted to form the case body.

9. A power supply device, comprising:

the battery box comprises a battery box, a battery box and a battery box, wherein two or more battery grooves which are arranged in parallel are arranged on the inner side of the battery box, a first contact pin is arranged at one end of the inner side of each battery groove, and a second contact pin is arranged at the other end of each battery groove;

the battery protection board as claimed in any one of claims 1 to 8, which is disposed in the battery container, and one end of the battery protection board is electrically connected to the first contact pin of the battery container, and the other end of the battery protection board is electrically connected to the second contact pin of the battery container; and

the battery protection board comprises a battery protection board and at least one battery, wherein the battery protection board is arranged in the other battery grooves, the positive terminal of the battery is electrically connected with the first contact pin of the battery groove, the negative terminal of the battery is electrically connected with the second contact pin of the battery groove, and the connecting piece in the battery protection board is electrically connected with the negative terminal of the battery through a conductive piece.

10. The power supply of claim 9 wherein said battery is a rechargeable battery;

the shell of the battery protection plate is profiled with the battery.

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