阅读说明：本技术 一种无极电池盒 (Electrodeless battery box ) 是由 刘文辉 费重程 汪雄剑 刘伟泉 戚建新 于 2019-09-12 设计创作，主要内容包括：本发明公开了一种无极电池盒,其特征在于,所述无极电池盒包括：用于容纳电池的电池支架以及与电池支架连接的防反接电路板,防反接电路板包括2N组增强型P-MOS管和增强型N-MOS管,每组增强型P-MOS管和增强型N-MOS管包括一个增强型P-MOS管和一个增强型N-MOS管,其中,每组增强型P-MOS管和增强型N-MOS管中的增强型P-MOS管的D极和增强型N-MOS管G极相连接,增强型P-MOS管的G极和增强型N-MOS管D极相连接,N的数值是电池支架容纳的电池数量。(The invention discloses a non-polar battery box, which is characterized by comprising the following components: the anti-reverse connection circuit board comprises 2N groups of enhanced P _ MOS tubes and enhanced N _ MOS tubes, each group of enhanced P _ MOS tubes and enhanced N _ MOS tubes comprises one enhanced P _ MOS tube and one enhanced N _ MOS tube, the D pole of each enhanced P _ MOS tube in each group of enhanced P _ MOS tubes and enhanced N _ MOS tubes is connected with the G pole of each enhanced N _ MOS tube, the G pole of each enhanced P _ MOS tube is connected with the D pole of each enhanced N _ MOS tube, and the numerical value of N is the number of batteries contained by the battery bracket.)

1. A non-polar battery cartridge, comprising: the anti-reverse connection circuit board comprises 2N groups of enhanced P _ MOS tubes and enhanced N _ MOS tubes, each group of enhanced P _ MOS tubes and enhanced N _ MOS tubes comprises an enhanced P _ MOS tube and an enhanced N _ MOS tube, wherein the D pole of the enhanced P _ MOS tube in each group of enhanced P _ MOS tubes and enhanced N _ MOS tubes is connected with the G pole of the enhanced N _ MOS tube, the G pole of the enhanced P _ MOS tube is connected with the D pole of the enhanced N _ MOS tube, the S pole of the enhanced P _ MOS tube is connected to the positive pole of a load, the S pole of the enhanced N _ MOS tube is connected to the negative pole of the load, and the numerical value of N is the number of batteries contained by the battery bracket.

2. A non-polar battery compartment according to claim 1, further comprising an overdischarge protection circuit board connected to the anti-reverse connection circuit board, the overdischarge protection circuit board for preventing the battery from being overdischarged.

3. The electrodeless battery compartment as claimed in claim 1, further comprising a battery holder top cover and a battery holder bottom cover, the battery holder top cover being connected with the battery holder, the battery holder bottom cover being connected with the reverse-connection-preventing circuit board.

4. The electrodeless battery pack as claimed in claim 2, wherein the over-discharge protection circuit board comprises a first 8-pin enhanced P _ MOS transistor U1 and a second 8-pin enhanced P _ MOS transistor U2, 1 16-pin over-discharge detection chip U3, first to ninth capacitors C1 to C9 and first to thirteenth resistors R1 to R13 in the case where N is 4, wherein,

the 1, 2 and 3 pins of U1 and U2 are connected to the positive pole of a load, one end of R3, C1 and C2;

the 5, 6, 7 and 8 pins of the U1 are connected to the 5, 6, 7 and 8 pins of the U2, and are connected to one ends of R2, R5 and R6 and the positive electrode of the first battery passing through the reverse connection prevention circuit board;

the 4 legs of U1 and U2 are connected to one end of R1;

the 1 pin of U3 is connected to the other end of R3, one end of R3 is connected to the load anode and to one end of C1, C2;

the 2 pin of U3 is connected to the other end of R2, one end of R2 is connected with the 5, 6, 7, 8 pins of U1 and U2, one end of R5 and R6, and the positive electrode of the first battery passes through the reverse connection prevention circuit board;

the 3 pin of U3 is connected to the other end of R1, and one end of R1 is connected to the 4 pins of U1 and U2;

the 4-pin of U3 is connected to one end of R4, the other end of R4 is connected to the other end of C1, the other end of C2, one end of C5 and one end of R13, and is connected with a load negative electrode;

the 5 pin of U3 is connected to one end of C3, the other end of C3 is connected to the other ends of C4, C5, R10, one end of R12, the 7 pin of U3;

the other end of the C5 is connected to the other end of the R4, one end of the R13, the other end of the C1, the other end of the C2 and a load cathode; the other end of the R13 is connected to the other end of the R12, and the negative electrode of the fourth battery passes through the reverse connection preventing circuit board; the other end of R12 is connected to the negative pole of the fourth battery passing through the reverse-connection preventing circuit board;

the 6 pin of U3 is connected to one end of C4, the other end of C4 is connected to the other ends of C3, C5, R10, one end of R12, the 7 pin of U3;

the 7 pin of U3 is connected to the other end of C3, C4, C5, one end of R12 and the other end of R10;

the 8 and 9 feet of U3 are suspended;

the 10 pin of U3 is connected to one end of R11, the other end of R11 is connected to the other end of R5, one end of C6, C7, C8, C9, and the 16 pin of U3;

the 11 pin of U3 is connected to one end of R10; the other end of R10 is connected to one end of R12, the other end of C5, and the 7-pin of U3; the other end of the R12 is connected to the other end of the R13, and the negative electrode of the fourth battery passes through the reverse connection preventing circuit board; one end of R13 is connected to the negative pole of the load, one end of C5, the other end of C4, C2 and C1;

the 12 feet of U3 are connected to one end of R9 and C9; the other end of R9 is connected to the negative pole of the third battery passing through the reverse-connection preventing circuit board; the other end of C9 is connected to the other end of R5, C6, C7, C8, 16 feet of U3; one end of R5 is connected to one end of R2, pins 5, 6, 7, 8 of U1 and U2, the positive electrode of the first battery via the reverse-connection-preventing circuit board;

the 13 feet of U3 are connected to one end of R8 and C8; the other end of R8 is connected to the negative pole of the second battery passing through the reverse-connection preventing circuit board; the other end of C8 is connected to the other end of R5, C6, C7, C9, 16 feet of U3;

the 14 feet of U3 are connected to one end of R7 and C7; the other end of R7 is connected to the negative pole of the first battery through the reverse-connection preventing circuit board; the other end of C7 is connected to the other end of R5, C6, C8, C9, 16 feet of U3;

the 15 pin of U3 is connected to the other end of R6, one end of C6; one end of R6 is connected to the positive electrode of the first battery passing through the reverse-connection preventing circuit board, one end of R5, one end of R2, 5, 6, 7, 8 pins of U1 and U2; the other end of C6 is connected to the other end of R5, C7, C8, C9, 16 feet of U3;

the 16 feet of U3 are connected to the other end of R5, the other end of C6, C7, C8 and C9; one end of R5, one end of R2, pins 5, 6, 7, 8 of U1 and U2, the positive electrode of the first battery through the reverse-connection-preventing circuit board.

Technical Field

The present invention relates to a battery case, and more particularly, to a battery case for a non-polar battery.

Background

When a battery is put into a battery case, the polarity of the battery must be matched with that of the battery case, and more time is consumed. If the light is darker or the marks are unclear, inconvenience is brought to battery installation, and the hidden trouble of reverse installation exists. In addition, if the battery is reversely mounted due to negligence and the like, the battery cannot work, and circuits and components can be burnt out in serious conditions, so that serious accidents are brought, and economic losses are caused.

Therefore, a battery box which does not need to distinguish the positive polarity and the negative polarity of the battery when the battery is assembled is needed, so that the time consumed by assembling the battery is shortened, the working efficiency is improved, and potential safety hazards caused by reversely assembling the battery can be reduced.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide an electrodeless battery pack which can shorten the time consumed for assembling a battery, improve the working efficiency, and reduce the potential safety hazard.

In order to achieve the above object, according to the present invention, there is provided a non-polar battery case, comprising: the anti-reverse connection circuit board comprises 2N groups of enhanced P _ MOS tubes and enhanced N _ MOS tubes, each group of enhanced P _ MOS tubes and enhanced N _ MOS tubes comprises an enhanced P _ MOS tube and an enhanced N _ MOS tube, wherein the D pole of the enhanced P _ MOS tube in each group of enhanced P _ MOS tubes and enhanced N _ MOS tubes is connected with the G pole of the enhanced N _ MOS tube, the G pole of the enhanced P _ MOS tube is connected with the D pole of the enhanced N _ MOS tube, the S pole of the enhanced P _ MOS tube is connected to the positive pole of a load, the S pole of the enhanced N _ MOS tube is connected to the negative pole of the load, and the numerical value of N is the number of batteries contained by the battery bracket.

The electrodeless battery box also comprises an overdischarge protection circuit board connected with the reverse connection prevention circuit board, and the overdischarge protection circuit board is used for preventing the battery from being overdischarged.

The electrodeless battery box also comprises a battery support top cover and a battery support bottom cover, wherein the battery support top cover is connected with the battery support, and the battery support bottom cover is connected with the reverse connection prevention circuit board.

Under the condition that N is 4, the over-discharge protection circuit board comprises a first 8-pin enhanced P _ MOS tube U1, a second 8-pin enhanced P _ MOS tube U2, 1 16-pin over-discharge detection chip U3, first to ninth capacitors C1 to C9 and first to thirteenth resistors R1 to R13, wherein 1, 2 and 3 pins of the U1 and the U2 are connected to the positive pole of a load and one end of R3, C1 and C2; the 5, 6, 7 and 8 pins of the U1 are connected to the 5, 6, 7 and 8 pins of the U2, and are connected to one ends of R2, R5 and R6 and the positive electrode of the first battery passing through the reverse connection prevention circuit board; the 4 legs of U1 and U2 are connected to one end of R1; the 1 pin of U3 is connected to the other end of R3, one end of R3 is connected to the load anode and to one end of C1, C2; the 2 pin of U3 is connected to the other end of R2, one end of R2 is connected with the 5, 6, 7, 8 pins of U1 and U2, one end of R5 and R6, and the positive electrode of the first battery passes through the reverse connection prevention circuit board; the 3 pin of U3 is connected to the other end of R1, and one end of R1 is connected to the 4 pins of U1 and U2; the 4-pin of U3 is connected to one end of R4, the other end of R4 is connected to the other end of C1, the other end of C2, one end of C5 and one end of R13, and is connected with a load negative electrode; the 5 pin of U3 is connected to one end of C3, the other end of C3 is connected to the other ends of C4, C5, R10, one end of R12, the 7 pin of U3; the other end of the C5 is connected to the other end of the R4, one end of the R13, the other end of the C1, the other end of the C2 and a load cathode; the other end of the R13 is connected to the other end of the R12, and the negative electrode of the fourth battery passes through the reverse connection preventing circuit board; the other end of R12 is connected to the negative pole of the fourth battery passing through the reverse-connection preventing circuit board; the 6 pin of U3 is connected to one end of C4, the other end of C4 is connected to the other ends of C3, C5, R10, one end of R12, the 7 pin of U3; the 7 pin of U3 is connected to the other end of C3, C4, C5, one end of R12 and the other end of R10; the 8 and 9 feet of U3 are suspended; the 10 pin of U3 is connected to one end of R11, the other end of R11 is connected to the other end of R5, one end of C6, C7, C8, C9, and the 16 pin of U3; the 11 pin of U3 is connected to one end of R10; the other end of R10 is connected to one end of R12, the other end of C5, and the 7-pin of U3; the other end of the R12 is connected to the other end of the R13, and the negative electrode of the fourth battery passes through the reverse connection preventing circuit board; one end of R13 is connected to the negative pole of the load, one end of C5, the other end of C4, C2 and C1; the 12 feet of U3 are connected to one end of R9 and C9; the other end of R9 is connected to the negative pole of the third battery passing through the reverse-connection preventing circuit board; the other end of C9 is connected to the other end of R5, C6, C7, C8, 16 feet of U3; one end of R5 is connected to one end of R2, pins 5, 6, 7, 8 of U1 and U2, the positive electrode of the first battery via the reverse-connection-preventing circuit board; the 13 feet of U3 are connected to one end of R8 and C8; the other end of R8 is connected to the negative pole of the second battery passing through the reverse-connection preventing circuit board; the other end of C8 is connected to the other end of R5, C6, C7, C9, 16 feet of U3; the 14 feet of U3 are connected to one end of R7 and C7; the other end of R7 is connected to the negative pole of the first battery through the reverse-connection preventing circuit board; the other end of C7 is connected to the other end of R5, C6, C8, C9, 16 feet of U3; the 15 pin of U3 is connected to the other end of R6, one end of C6; one end of R6 is connected to the positive electrode of the first battery passing through the reverse-connection preventing circuit board, one end of R5, one end of R2, 5, 6, 7, 8 pins of U1 and U2; the other end of C6 is connected to the other end of R5, C7, C8, C9, 16 feet of U3; the 16 feet of U3 are connected to the other end of R5, the other end of C6, C7, C8 and C9; one end of R5, one end of R2, pins 5, 6, 7, 8 of U1 and U2, the positive electrode of the first battery through the reverse-connection-preventing circuit board.

According to the electrodeless battery box, the time consumed by assembling the battery can be shortened, the working efficiency is improved, and the potential safety hazard problem caused by reversely assembling the battery can be reduced. In addition, the electrodeless battery box can prevent the battery from being over-discharged, and effectively prolongs the service life of the battery.

Drawings

Fig. 1 is a structural view of an electrodeless battery case according to an embodiment of the present invention;

fig. 2A is a six-side view of a battery holder in a non-polar battery case according to an embodiment of the present invention;

fig. 2B is an isometric view of a battery holder in an electrodeless battery compartment in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view illustrating an electrode welding plate according to an embodiment of the present invention;

FIG. 4 is a connection diagram showing a set of enhancement P _ MOS transistors and enhancement N _ MOS transistors;

FIGS. 5 and 6 are connection diagrams showing two sets of enhanced P _ MOS transistors and enhanced N _ MOS transistors of the reverse connection protection circuit for a single battery;

fig. 7 is a reverse connection protection circuit showing a non-polar battery pack that can be used to house 4 batteries according to an embodiment of the present invention; and

fig. 8 is a circuit for over-discharge protection of an electrodeless battery pack that may be used to house 4 batteries according to an embodiment of the present invention.

Detailed Description

The features of the inventive concept and the methods of accomplishing the same may be understood more readily by reference to the following detailed description of the embodiments and the accompanying drawings. Embodiments will be described in more detail hereinafter with reference to the accompanying drawings, in which like reference numerals refer to like elements throughout. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided as examples so that this disclosure will be thorough and complete, and will fully convey various aspects and features of the disclosure to those skilled in the art. Thus, processes, elements, and techniques not necessary to fully understand aspects and features of the disclosure are not described in detail for those of ordinary skill in the art. Unless otherwise indicated, like reference numerals refer to like elements throughout the drawings and written description, and thus, the description thereof is not repeated. In the drawings, the relative sizes of elements, layers and regions may be exaggerated for clarity.

Fig. 1 is a structural view of an electrodeless battery case according to an embodiment of the present invention. Referring to fig. 1, the electrodeless battery case includes a battery holder top cover 100, an electrode welding plate 200, a battery holder 300, an anti-reverse and overdischarge protection plate 400, and a battery holder bottom cover 500.

The battery holder top cover 100 and the battery holder bottom cover 500 are protective covers for both ends of the electrodeless battery case, for protecting the electrode welding plate 200 and the anti-reverse and over-discharge protecting plate 400 from the external environment, and can fix the electrode welding plate 200 and the anti-reverse and over-discharge protecting plate 400 to the battery holder 300.

The electrode welding plate 200 is welded with an electrode and connected to the battery holder 300. It is also possible to omit the electrode welding plate 200 and directly weld the electrode to the battery holder 300.

The battery holder 300 is a portion that accommodates a battery, and a six-sided view of the battery holder 300 is shown in fig. 2A, and a perspective view of the battery holder 300 is shown in fig. 2B. In fig. 2A, (a) is a front view, (b) is a left view, (c) is a right view, (d) is a rear view, (e) is a top view, and (f) is a bottom view. In fig. 2B, (a) to (c) show perspective views in the case where the battery is not mounted, and (d) shows a perspective view in the case where the battery is mounted. In the present embodiment of the invention, a battery holder capable of accommodating 4 batteries is shown, and hereinafter, 4 batteries are described as an example in which the battery holder can be mounted, and it is easy for those skilled in the art to fabricate an electrodeless battery case capable of accommodating any number of batteries according to the description of the present embodiment.

As can be seen from fig. 2A and 2B, the appearances of the two ends of the electrode of the battery holder 300 are the same, and the output of the battery holder 300 is differentiated by the positive and negative electrodes.

One end of the battery holder 300 is connected to the anti-reverse and overdischarge protection plate 400. The reverse connection prevention and overdischarge protection board 400 may include a reverse connection protection circuit and an overdischarge protection circuit. The reverse connection protection circuit and the over-discharge protection circuit may be integrated into one PCB board to form the reverse connection prevention and over-discharge protection board 400 connected to the battery support bottom cover 500. The reverse connection protection circuit and the over-discharge protection circuit may not be integrated together, but two separate components, i.e., the reverse connection protection circuit board and the over-discharge protection circuit board. The skilled person can choose whether to integrate the reverse connection protection circuit and the over-discharge protection circuit as required.

The other end of the battery holder 300 is connected to the electrode welding plate 200 to complete a battery forming circuit. In an exemplary embodiment of the present invention, the described electrodeless battery compartment may accommodate 4 batteries. In this case, a total of 4 electrodes 210 are welded to the electrode welding plate 200 of the electrode-less battery case according to the exemplary embodiment of the present invention. There is no electrical connection between the 4 electrodes 210 and the positions of the 4 electrodes 210 are symmetrically placed on the plate. As shown in fig. 3.

The reverse connection protection circuit in the reverse connection prevention and overdischarge protection plate 400 uses the conduction characteristics of an enhanced P _ MOS tube and an enhanced N _ MOS tube, and uses the enhanced P _ MOS tube and the enhanced N _ MOS tube to form a group, the D pole of the enhanced P _ MOS tube is connected with the G pole of the enhanced N _ MOS tube, and the G pole of the enhanced P _ MOS tube is connected with the D pole of the enhanced N _ MOS tube.

The connections of a set of enhancement P _ MOS transistors 410 and enhancement N _ MOS transistors 420 are shown in fig. 4. In fig. 4, the D pole of the enhanced P _ MOS transistor 410 is connected to the G pole of the enhanced N _ MOS transistor 420, the G pole of the enhanced P _ MOS transistor 410 is connected to the D pole of the enhanced N _ MOS transistor 420, the D pole of the enhanced P _ MOS transistor 410 is connected to the G pole of the enhanced N _ MOS transistor 420 and the anode of the battery, and the G pole of the enhanced P _ MOS transistor 410 and the D pole of the enhanced N _ MOS transistor 420 are connected to the cathode of the battery. The S pole of the enhancement type P _ MOS transistor 410 is connected to the positive pole of the load, and the S pole of the enhancement type N _ MOS transistor 420 is connected to the negative pole of the load.

In fig. 4, when a single battery supplies 4.2V, the output voltage between the S-pole of the enhancement P _ MOS transistor 410 and the S-pole of the enhancement N _ MOS transistor 420 is measured, and the output voltage is 4.1999V.

The reverse connection protection circuit for 1 battery is composed of two groups of enhanced P _ MOS tubes and enhanced N _ MOS tubes, but the positive electrodes and the negative electrodes of the two groups of enhanced P _ MOS tubes and enhanced N _ MOS tubes are reversely connected, so that no matter the battery is in positive connection or reverse connection, one group of MOS tube combination is always in a working state, the other group of MOS tube combination is in a cut-off state, no current passes through, the power consumption is not increased, and the reverse connection protection of the battery is realized.

The connection diagrams of two groups of enhanced P _ MOS tubes 411 and 412 and enhanced N _ MOS tubes 421 and 422 in the reverse connection protection circuit for a single battery are shown in fig. 5 and 6.

Fig. 5 shows the case where the battery is mounted upright.

In fig. 5, the D pole of the first enhancement type P _ MOS 411 is connected to the G pole of the first enhancement type N _ MOS 421, and the G pole of the first enhancement type P _ MOS 411 is connected to the D pole of the first enhancement type N _ MOS 421; the D pole of the second enhancement type P _ MOS transistor 412 is connected to the G pole of the second enhancement type N _ MOS transistor 422, and the G pole of the second enhancement type P _ MOS transistor 412 is connected to the D pole of the second enhancement type N _ MOS transistor 422. The S pole of the second enhancement type N _ MOS tube 422 is connected to the S pole of the first enhancement type N _ MOS tube 421; the S pole of the second enhancement type P _ MOS transistor 412 is connected to the S pole of the first enhancement type P _ MOS transistor 411. The positive pole of the load is connected to the S pole of the second enhancement type P _ MOS transistor 412 and the S pole of the first enhancement type P _ MOS transistor 411, and the negative pole of the load is connected to the S pole of the second enhancement type N _ MOS transistor 422 and the S pole of the first enhancement type N _ MOS transistor 421.

When the battery is positively installed, the positive electrode of the battery is connected to the G pole of the second enhancement type N _ MOS tube 422, the D pole of the second enhancement type P _ MOS tube 412, the D pole of the first enhancement type N _ MOS tube 421 and the G pole of the first enhancement type P _ MOS tube 411; the cathode of the battery is connected to the D pole of the second enhancement type N _ MOS 422, the G pole of the first enhancement type N _ MOS 421, the D pole of the first enhancement type P _ MOS 411, and the G pole of the second enhancement type P _ MOS 412.

When the single battery supplies 4.2V, the output voltage is measured to be 4.1999V.

Fig. 6 shows the case of reverse mounting of the battery.

In fig. 6, the D pole of the first enhancement type P _ MOS 411 is connected to the G pole of the first enhancement type N _ MOS 421, and the G pole of the first enhancement type P _ MOS 411 is connected to the D pole of the first enhancement type N _ MOS 421; the D pole of the second enhancement type P _ MOS transistor 412 is connected to the G pole of the second enhancement type N _ MOS transistor 422, and the G pole of the second enhancement type P _ MOS transistor 412 is connected to the D pole of the second enhancement type N _ MOS transistor 422. The S pole of the second enhancement type N _ MOS tube 422 is connected to the S pole of the first enhancement type N _ MOS tube 411; the S pole of the second enhancement type P _ MOS transistor 412 is connected to the S pole of the first enhancement type P _ MOS transistor 411. The positive pole of the load is connected to the S pole of the second enhancement type P _ MOS transistor 412 and the S pole of the first enhancement type P _ MOS transistor 411, and the negative pole of the load is connected to the S pole of the second enhancement type N _ MOS transistor 412 and the S pole of the first enhancement type N _ MOS transistor 421.

When the battery is reversely mounted, the negative electrode of the battery is connected to the G pole of the second enhancement type N _ MOS tube 422, the D pole of the second enhancement type P _ MOS tube 412, the D pole of the first enhancement type N _ MOS tube 421 and the G pole of the first enhancement type P _ MOS tube 411; the positive electrode of the battery is connected to the D electrode of the second enhancement type N _ MOS tube 422, the G electrode of the first enhancement type N _ MOS tube 411, the D electrode of the first enhancement type P _ MOS tube 411 and the G electrode of the second enhancement type P _ MOS tube 412.

When the single battery supplies 4.2V, the measured output voltage is also 4.1999V.

Fig. 7 shows a reverse connection protection circuit of a non-polar battery pack that can be used to house 4 batteries according to an embodiment of the present invention.

If the electrodeless battery box is used for placing 4 batteries, 8 groups of reverse connection protection circuits formed by the enhanced P _ MOS tubes and the enhanced N _ MOS tubes are needed, and the reverse connection protection circuit is specifically shown in FIG. 7.

As the reverse connection protection circuit shown in FIG. 7, the D pole of the enhanced P _ MOS transistor is connected with the G pole of the enhanced N _ MOS transistor, and the G pole of the enhanced P _ MOS transistor is connected with the D pole of the enhanced N _ MOS transistor. And the voltage between the S pole of the enhanced P _ MOS tube and the S pole of the enhanced N _ MOS tube is output voltage.

In fig. 7, U4, U5, U8, U9, U12, U13, U16, and U17 are enhancement type P _ MOS transistors, and U6, U7, U10, U11, U14, U15, U18, and U19 are enhancement type N _ MOS transistors

The first battery is connected at B1_ IN _1 and B1_ IN _2, and referring to the principle of positive/negative connection of batteries IN fig. 5 and 6, the voltages at the output terminals BAT + and B1_ OUT-are the output voltages of the first battery.

Similarly, the second battery is connected to B2_ IN _1 and B2_ IN _2, and the voltages at the output terminals B1_ OUT-and B2_ OUT-are the output voltages of the second battery. The third battery is connected to B3_ IN _1 and B3_ IN _2, and the voltages at the output terminals B2_ OUT-and B3_ OUT-are the output voltages of the third battery. The fourth battery is connected to B4_ IN _1 and B4_ IN _2, and the voltages at the output terminals B3_ OUT-and BAT-are the output voltages of the fourth battery.

No matter the battery is connected in the positive direction or in the reverse direction, one group of MOS tube combination is in a working state, the other group of MOS tube combination is in a cut-off state, no current passes through, the power consumption is not increased, and therefore reverse connection prevention protection of the battery is achieved.

Fig. 8 is a circuit for over-discharge protection of an electrodeless battery pack that may be used to house 4 batteries according to an embodiment of the present invention.

Referring to fig. 8, the over-discharge protection circuit includes 2 8-pin enhanced P _ MOS transistors (U1 and U2), 1 16-pin over-discharge detection chip (U3), 9 capacitors (C1, C2, C3, C4, C5, C6, C7, C8, and C9), and 13 resistors (R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, and R13).

The 1, 2 and 3 pins of U1 and U2 are connected to the P + output end, one end of R3, C1 and C2, wherein the P + output end is the anode output of the device and is connected with the anode of a load;

the 5, 6, 7, 8 pins of U1 are connected to the 5, 6, 7, 8 pins of U2, and to one end of R2, R5, R6 and BAT + terminal;

the 4 legs of U1 and U2 are connected to one end of R1;

the 1 pin of U3 is connected to the other end of R3, one end of R3 is connected to the P + output end and is connected to one ends of C1 and C2;

the 2 pin of U3 is connected to the other end of R2, one end of R2 is connected with the 5, 6, 7, 8 pins of U1 and U2, one end of R5 and R6, and a BAT + end;

the 3 pin of U3 is connected to the other end of R1, and one end of R1 is connected to the 4 pins of U1 and U2;

the 4 pin of U3 is connected to one end of R4, the other end of R4 is connected to the other end of C1, the other end of C2, one end of C5 and one end of R13, and is connected with a P-output end, wherein the P-output end is the negative output of the device and is connected with the negative pole of a load;

the 5 pin of U3 is connected to one end of C3, the other end of C3 is connected to the other ends of C4, C5, R10, one end of R12, the 7 pin of U3;

the other end of the C5 is connected to the other end of the R4, one end of the R13, the other end of the C1, the other end of the C2 and the P-output end; the other end of R13 is connected to the other end of R12, BAT-terminal; the other end of R12 is connected to BAT-terminal;

the 6 pin of U3 is connected to one end of C4, the other end of C4 is connected to the other ends of C3, C5, R10, one end of R12, the 7 pin of U3;

the 7 pin of U3 is connected to the other end of C3, C4, C5, one end of R12 and the other end of R10;

the 8 and 9 feet of U3 are suspended;

the 10 pin of U3 is connected to one end of R11, the other end of R11 is connected to the other end of R5, one end of C6, C7, C8, C9, and the 16 pin of U3;

the 11 pin of U3 is connected to one end of R10; the other end of R10 is connected to one end of R12, the other end of C5, and the 7-pin of U3; the other end of R12 is connected to the other end of R13, BAT-terminal; one end of R13 is connected to the P-output end, one end of C5, the other end of C4, C2 and C1;

the 12 feet of U3 are connected to one end of R9 and C9; the other end of R9 is connected to the B3_ OUT-terminal; the other end of C9 is connected to the other end of R5, C6, C7, C8, 16 feet of U3; one end of R5 is connected to one end of R2, 5, 6, 7, 8 pins of U1 and U2, BAT + end;

the 13 feet of U3 are connected to one end of R8 and C8; the other end of R8 is connected to the B2_ OUT-terminal; the other end of C8 is connected to the other end of R5, C6, C7, C9, 16 feet of U3;

the 14 feet of U3 are connected to one end of R7 and C7; the other end of R7 is connected to the B1_ OUT-terminal; the other end of C7 is connected to the other end of R5, C6, C8, C9, 16 feet of U3;

the 15 pin of U3 is connected to the other end of R6, one end of C6; one end of R6 is connected to BAT + terminal, one end of R5, one end of R2, pins 5, 6, 7, 8 of U1 and U2; the other end of C6 is connected to the other end of R5, C7, C8, C9, 16 feet of U3;

the 16 feet of U3 are connected to the other end of R5, the other end of C6, C7, C8 and C9; one end of R5, one end of R2, the 5, 6, 7, 8 pins of U1 and U2, BAT + end.

The 16-pin overdischarge detection chip (U3) may use an overdischarge detection chip currently commercially available, for example, from seiko electronics ltd S-8254, and in the case of using the 16-pin overdischarge detection chip from seiko electronics ltd S-8254, the 16-pin description of U3 is shown in table 1 below.

[ TABLE 1 ]

The output voltages of the 4 batteries are respectively connected to pins 15, 14, 13 and 12 of the chip U3. When a single battery is lower than 2.7V, 3-pin DOP of the chip U3 outputs high level to cut off MOS transistors at the output ends of U1 and U2, so that no voltage exists between P + and P-. This achieves battery over-discharge protection.

When the low-voltage battery is replaced by the battery with the voltage more than 3.0V, the pin 3 DOP of the chip U3 outputs low level, so that MOS (metal oxide semiconductor) tubes at the output ends of U1 and U2 are conducted, and the over-discharge protection is released.

Over-discharge protection can be achieved by the over-discharge protection circuit according to the embodiment of the present invention described above with reference to fig. 8.

According to the electrodeless battery box, the time consumed by assembling the battery can be shortened, the working efficiency is improved, and the potential safety hazard problem caused by reversely assembling the battery can be reduced. In addition, the electrodeless battery box can prevent the battery from being over-discharged, and effectively prolongs the service life of the battery.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and/or the present specification and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The foregoing is illustrative of example embodiments and is not to be construed as limiting thereof. Although a few example embodiments have been described, those skilled in the art will readily appreciate that many modifications are possible in example embodiments without materially departing from the novel teachings and advantages of example embodiments. Accordingly, all such modifications are intended to be included within the scope of example embodiments as defined in the claims. In the claims, means-plus-function clauses are intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Therefore, it is to be understood that the foregoing is illustrative of example embodiments and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed example embodiments, as well as other example embodiments, are intended to be included within the scope of the appended claims. The inventive concept is defined by the following claims, with equivalents of the claims to be included therein.