CN207068969U - Battery protection board and power supply unit - Google Patents

Abstract

The utility model also discloses a power supply device, which comprises a battery module and a circuit protection board, wherein the battery module comprises an insulating shell and a plurality of monomer cells arranged in the insulating shell, the upper surface of the insulating shell is also provided with a plurality of conducting strips electrically connected with the monomer cells, the battery protection board comprises a base board, a battery protection circuit and a plurality of conducting terminals corresponding to the monomer cells in the battery module are arranged on the base board, the conductive terminals are arranged at two sides of the substrate at a certain interval, the battery protection circuit is electrically connected with the conductive terminals and is provided with a pair of power supply leading-out ends for leading out or inputting power supplies of a plurality of groups of single battery cores, and the conductive terminals correspond to the conductive sheets one by one and are opposite in position, and when the circuit protection board is arranged on the upper surface of the insulating shell, the conductive terminals are electrically connected with the conductive sheets. Need not to use the lead wire to be connected monomer electricity core and battery protection shield electricity in with the battery module, the wrong problem of wiring can not appear yet.

Description

Battery protection board and power supply unit

technical field

The utility model relates to a battery device, in particular to a power supply device with improved connection between a battery protection board and a battery module.

Background technique

The current power supply device, especially the power supply device involving a variety of single cells, its battery protection board needs to be electrically connected to several single cells respectively. The power cord of the battery cell is led out and welded to the interface of the corresponding battery protection board. There are many connections and the operation is complicated and error-prone.

Therefore, there is an urgent need for a new power supply device that can solve the above-mentioned problems.

Utility model content

The purpose of the utility model is to provide a battery protection board and a power supply device, so that when the battery protection board is connected with the battery module, no lead wire is needed, and the problem of wrong wiring will not occur.

In order to realize the purpose, the utility model discloses a battery protection board, which includes a substrate, on which a battery protection circuit and a plurality of conductive terminals corresponding to the single cells in the battery module are arranged, and the conductive terminals Arranged on both sides of the substrate at a certain distance, the battery protection circuit is electrically connected to the conductive terminals and is provided with a pair of power supply terminals to lead out the power supply of several sets of single cells. The power supply terminals pass through the The battery protection circuit is electrically connected with several of the single cells to extract or input electric energy.

Compared with the prior art, several conductive terminals are respectively arranged on both sides of the battery protection board of the utility model, and the conductive terminals are arranged at a certain distance, and are electrically connected to the single cells in the battery module and the battery protection board. When connecting, the position of the conductive terminal corresponds to the position of the conductive sheet of the single cell in the battery module. When connecting, it is not necessary to use lead wires to electrically connect the single cell in the battery module with the battery protection board. The board is installed on the battery module. At this time, the conductive terminals of the battery protection board correspond to the terminals of the single cell to be electrically connected to it, that is, no lead wires are needed, and there will be no problem of wiring errors.

Preferably, a pair of power lead-out terminals are connected with a pair of power lead-out wires or power lead-out interfaces.

Preferably, terminal blocks corresponding to the conductive terminals are protruding outward from both sides of the substrate, and the conductive terminals are arranged on the terminal blocks in a one-to-one correspondence.

Preferably, a terminal installation area is formed near the two side edges of the substrate, and the conductive terminals are installed in the terminal installation area at a certain interval.

Preferably, the battery protection circuit is formed on the front side of the substrate, and the conductive terminals are formed on the back side of the substrate.

Specifically, one side of the conductive terminal is bent and extended toward the front of the substrate to form an electrical connection terminal on the front of the substrate, and the battery protection circuit is electrically connected to the conductive terminal through the electrical connection terminal.

Preferably, the conductive terminals are elastic pieces protruding outward.

The utility model also discloses a power supply device, which includes a battery module and a circuit protection board. The battery module includes an insulating case and a number of single cells arranged in the insulating case. The upper surface is also formed with a number of conductive sheets electrically connected to the single cell. The circuit protection board is as described above, and the plurality of conductive terminals are in one-to-one correspondence with the plurality of conductive sheets and are opposite to each other. When the protective plate is installed on the upper surface of the insulating housing, the conductive terminal is electrically connected to the conductive sheet.

Compared with the prior art, several conductive terminals are arranged on both sides of the battery protection board of the present invention, and the conductive terminals are arranged at a certain distance, and the positions of the conductive terminals are in line with the conductive sheets of the single cells in the battery module. Corresponding to the position, when electrically connecting the single cells in the battery module with the battery protection board, there is no need to use lead wires to electrically connect the single cells in the battery module with the battery protection board, just install the battery protection board On the battery module, at this time, the conductive terminal of the battery protection board should contact the terminal of the single cell to be electrically connected to it, that is, no lead wire is needed, and there will be no problem of wiring error.

Preferably, the upper surface of the insulating housing is concavely provided with a plurality of grooves corresponding to the conductive terminals one by one, the conductive sheet is arranged on the bottom surface of the groove, and the circuit protection board is installed on the insulating housing The upper surface of the body, and make the conductive terminal protrude into the groove and contact the conductive sheet to electrically connect the conductive terminal and the conductive sheet.

More preferably, the conductive terminal or the conductive sheet is an elastic sheet, and the conductive terminal is engaged in the groove and collides with the conductive sheet to electrically connect the conductive terminal and the conductive sheet. No welding, no screw connection, easy and fast assembly.

Preferably, the two sides of the substrate protrude outwards and are provided with terminal blocks corresponding to the conductive terminals, the conductive terminals are arranged on the terminal blocks in one-to-one correspondence, and the upper surface of the insulating housing is concavely provided with A plurality of grooves correspond one-to-one to the terminal blocks, and the conductive sheet is arranged on the bottom surface of the grooves.

Preferably, the conductive terminal or the conductive sheet is an elastic sheet, and the circuit protection board is engaged with the insulating housing to make the conductive terminal and the conductive sheet interfere with each other.

More preferably, the conductive terminal or the conductive sheet is an elastic sheet, and the terminal block is engaged in the groove so as to make the conductive terminal and the conductive sheet resistively connected. No welding, no screw connection, easy and fast assembly.

Preferably, the conductive terminals are welded or screwed to the corresponding conductive sheets. The connection structure is stable.

Description of drawings

Fig. 1 is a schematic structural diagram of the power supply device in the first embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a circuit protection board of the power supply device in FIG. 1 .

FIG. 3 is a schematic structural diagram of a power module of the power supply device shown in FIG. 1 .

FIG. 4 is a side view of the power supply unit shown in FIG. 1 .

Fig. 5 is a schematic structural diagram of the power supply device in the second embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a circuit protection board of the power supply device shown in FIG. 5 .

FIG. 7 is a schematic structural diagram of a power module of the power supply device shown in FIG. 5 .

FIG. 8 is a side view of the power supply unit shown in FIG. 5 .

Detailed ways

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

1 to 3, the utility model discloses a power supply device 100, the power supply device 100 includes a battery module 10 and a circuit protection board 20, the battery module 10 includes an insulating case 11 and is located on the Several single cells (not shown) in the insulating case 11, the upper surface of the insulating case 10 is also formed with a number of conductive sheets 13 electrically connected to the single cells, the circuit protection board 20 is mounted on the battery module 10 and electrically connected to the conductive sheet 13 .

Referring to FIG. 2 , the battery protection board 20 includes a substrate 21 on which a battery protection circuit (not shown) and a plurality of conductive terminals 22 corresponding to the single cells in the battery module 10 are arranged. The conductive terminals 22 are arranged on both sides of the substrate 21 at a certain distance, the battery protection circuit is electrically connected to the conductive terminals 22 and is provided with a pair of power supply terminals, and the power supply terminal is connected to the battery protection circuit through the battery protection circuit. Several of the single cells are electrically connected to extract or input electric energy. Wherein, referring to FIG. 1 , a pair of power lead-out terminals 14 are connected with a pair of power lead-out wires (not shown in the figure) or power lead-out interfaces (not shown in the figure).

Referring to Fig. 1 and Fig. 4, wherein, a plurality of the conductive terminals 22 correspond to a plurality of the conductive sheets 13 and are opposite to each other, when the circuit protection board 20 is installed on the upper surface of the insulating casing 11, the conductive The terminal 22 is in contact with and electrically connected to the conductive sheet 13 .

Referring to FIG. 2 , terminal blocks 211 corresponding to the conductive terminals 22 protrude outward from both sides of the substrate 21 , and the conductive terminals 22 are arranged on the terminal blocks 211 in one-to-one correspondence. Wherein, the battery protection circuit is formed on the front of the substrate 21 , and the conductive terminals 22 are formed on the back of the substrate 21 . In order to facilitate the electrical connection between the battery protection circuit and the conductive terminal 22, one side of the conductive terminal 22 can be bent and extended toward the front of the substrate 21 to form an electrical connection terminal on the front of the substrate 21 (not shown in this embodiment). shown), the battery protection circuit is electrically connected to the conductive terminal 22 through the electrical connection terminal.

3 and 4, the upper surface of the insulating housing 11 is recessed with a number of grooves 111 corresponding to the conductive terminals 13, the conductive sheet 13 is arranged on the bottom surface of the groove 111, and the circuit The protective plate 20 is installed on the upper surface of the insulating shell 11, and the conductive terminal 22 extends into the groove 111 and contacts the conductive sheet 13 so that the conductive terminal 22 and the conductive sheet 13 electrical connection.

Wherein, in order to make the electrical connection between the conductive terminal 22 and the conductive sheet 13 stable, when the circuit protection board 20 is installed on the upper surface of the insulating housing 11, the conductive terminal 22 can be fixed on the conductive sheet 13 by screws, or the The conductive terminal 22 is welded on the conductive sheet 13 , of course, the conductive terminal 22 may also be welded to the conductive sheet 13 while the conductive terminal 22 is screwed to the conductive sheet 13 . Of course, the ways to connect the point sheet 22 to the conductive sheet 13 are not limited to the above-mentioned ones.

Referring to FIG. 6 to FIG. 8, it is the second embodiment of the present utility model. The difference from the first embodiment is that in this embodiment, another power supply device 100a, the power supply module 10a and the circuit of the power supply device 100a are disclosed In the protective plate 20a, the substrate 21a of the circuit protective plate 20a is formed with terminal installation areas 212 adjacent to the two side edges, and the conductive terminals 22 are installed in the terminal installation areas 212 at a certain interval.

Wherein, the battery protection circuit is formed on the front of the substrate 21 , and the conductive terminals 22 are formed on the back of the substrate 21 . In order to facilitate the electrical connection between the battery protection circuit and the conductive terminal 22, one side of the conductive terminal 22 can be bent and extended to the front of the substrate 21 to form an electrical connection terminal 23 on the front of the substrate 21. The battery protection The circuit is electrically connected to the conductive terminal 22 through the electrical connection terminal 23 .

In this embodiment, the conductive terminals 22 protrude from the surface of the substrate 21a, and the upper surface of the insulating housing 11a of the power module 10a is concavely provided with a plurality of grooves 111a for installing the conductive sheets 13, and the grooves 111a Deeper than the conductive sheet 13, so that when the circuit protection board 20 is mounted on the upper surface of the insulating case 11a, the conductive terminal 22 extends into the groove 111a and collides with the conductive sheet 13 for electrical connection.

Wherein, in order to make the electrical connection between the conductive terminal 22 and the conductive sheet 13 stable, when the circuit protection board 20a is installed on the upper surface of the insulating casing 11a, the conductive terminal 22 can be fixed on the conductive sheet 13 by screws, or the The conductive terminal 22 is welded on the conductive sheet 13 , of course, the conductive terminal 22 may also be welded to the conductive sheet 13 while the conductive terminal 22 is screwed to the conductive sheet 13 . Of course, the ways to connect the point sheet 22 to the conductive sheet 13 are not limited to the above-mentioned ones.

Of course, the conductive terminal 22 can also be directly embedded on the substrate 21a, and the groove 111a can also be consistent with the thickness of the conductive sheet 13 or even shallower than the conductive sheet 13 (or the conductive sheet 13 can be directly fixed to the insulating shell without using the groove 111a. body 11a), so that when the circuit protection board 20 is installed on the upper surface of the insulating case 11a, it directly touches the conductive sheet 13 to be electrically connected.

Of course, the conductive terminal 22 can also be directly recessed on the surface of the substrate 21a. At this time, the conductive sheet 13 is installed on the insulating casing 11a and protrudes from the upper surface of the insulating casing 11a, so that the circuit protection board 20 is installed On the upper surface of the insulating casing 11a, the conductive sheet 13 protrudes into the surface of the substrate 21 and collides with the missile terminal 22 for electrical connection.

Based on the above-mentioned embodiments (including the first embodiment and the second embodiment), in another preferred embodiment, in order to save the steps of assembling parts, the shrapnel is directly selected as the conductive terminal 22/or the conductive sheet 13, so When the circuit protection board 20 is installed on the upper surface of the insulating case 11 (or the insulating case 11a), the substrate 21 of the battery protection board 20 is engaged with the insulating case 11 (or the insulating case 11a), so that The conductive terminal 22 is in contact with the conductive sheet 13 , and the conductive terminal 22 is electrically connected to the conductive sheet 13 .

Wherein, the base plate 21 and the insulating shell 11 can be engaged and connected by means of respectively setting engaging components on the base plate 21 of the battery protection board 20 and the insulating shell 11. At this time, the conductive terminals 22 protrude into the Inside the groove 111 (or groove 111a). It is also possible to directly arrange engaging components on the conductive terminals 22 and the groove 111 (or the groove 111 a ), so that the substrate 21 is engaged with the insulating housing 11 . It is also possible to directly arrange engaging engaging components on the substrate 21 and the groove 111 (or groove 111 a ) around the conductive terminals 22 , so that the substrate 21 is engaged with the insulating housing 11 .

Preferably, shrapnel is used as the conductive terminal 22 and the conductive sheet 13, and when the circuit protection board 20 is installed on the upper surface of the insulating housing 11, the conductive terminal 22 and the conductive sheet 13 are provided with mutually locking The engaging structure directly engages the conductive terminal 22 and the conductive sheet 13 together.

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (10)

1. A battery protection board, characterized in that: it includes a substrate, on which a battery protection circuit and a plurality of conductive terminals corresponding to the single cells in the battery module are arranged, and the conductive terminals are arranged at a certain distance between On both sides of the substrate, the battery protection circuit is electrically connected to the conductive terminal and is provided with a pair of power supply terminals, and the power supply terminal is electrically connected to a plurality of the single cells through the battery protection circuit to lead out or input power. 2. The battery protection board according to claim 1, characterized in that: the two sides of the substrate protrude outwards to provide terminal blocks corresponding to the conductive terminals, and the conductive terminals are arranged on the terminals in one-to-one correspondence. on stage. 3 . The battery protection board according to claim 1 , wherein a terminal installation area is formed near two side edges of the substrate, and the conductive terminals are installed in the terminal installation area at a certain interval. 4 . 4. The battery protection board according to claim 1, wherein the battery protection circuit is formed on the front side of the substrate, and the conductive terminals are formed on the back side of the substrate. 5. The battery protection board according to claim 4, characterized in that: the side of the conductive terminal adjacent to the corresponding edge of the substrate bends and extends from the corresponding edge of the substrate to the front of the substrate, and Electrical connection terminals are formed on the front surface of the substrate, and the battery protection circuit is electrically connected to the conductive terminals through the electrical connection terminals. 6. A power supply device, characterized in that: it includes a battery module and a circuit protection board, the battery module includes an insulating casing and a number of single cells arranged in the insulating casing, the insulating casing The upper surface is also formed with a plurality of conductive sheets electrically connected to the single cells, the circuit protection board is as described in any one of claims 1-5, and the plurality of conductive terminals are connected with the plurality of conductive sheets. One corresponds and the position is opposite, when the circuit protection board is installed on the upper surface of the insulating housing, the conductive terminal is electrically connected to the conductive sheet. 7. The power supply device according to claim 6, characterized in that: the upper surface of the insulating housing is recessed with a plurality of grooves corresponding to the conductive terminals one by one, and the conductive sheet is arranged on the bottom surface of the groove , the circuit protection board is installed on the upper surface of the insulating housing, and the conductive terminal is extended into the groove and contacts the conductive sheet so that the conductive terminal is electrically connected to the conductive sheet. 8 . The power supply device according to claim 6 , wherein terminal blocks corresponding to the conductive terminals are protruded outward on both sides of the substrate, and the conductive terminals are arranged on the terminal blocks in one-to-one correspondence. In addition, the upper surface of the insulating housing is recessed with a plurality of grooves corresponding to the terminal blocks one by one, and the conductive sheet is arranged on the bottom surface of the grooves. 9. The power supply device according to claim 6, wherein the conductive terminal or the conductive piece is an elastic piece, and the circuit protection board is engaged with the insulating housing so that the conductive terminal and the conductive piece The above conductive strip interferes with the connection. 10 . The power supply device according to claim 6 , wherein the conductive terminal is connected to the corresponding conductive sheet by welding or screws. 11 .