A kind of infinite battery box

Abstract

The present invention discloses a stepless battery box, which is characterized in that the stepless battery box comprises: a battery bracket for accommodating batteries and an anti-reverse connection circuit board connected to the battery bracket, 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 to the G pole of the enhanced N_MOS tube, the G pole of the enhanced P_MOS tube is connected to the D pole of the enhanced N_MOS tube, and the value of N is the number of batteries accommodated in the battery bracket.

Description

Technical Field

[0001] The present invention relates to a battery box, and more particularly to a non-polar battery box. Background Art

[0002] The battery box we usually use needs to distinguish the positive and negative poles of the battery when inserting the battery. The polarity of the battery must match the polarity of the battery box, which takes more time. If the light is dim or the markings are not clear, it will bring inconvenience to the battery installation, and there is a risk of reverse installation. In addition, if the battery is installed reversely due to negligence, it may not only cause it to fail to work, but in serious cases it may burn out the circuit and components, causing serious accidents and economic losses.

[0003] Therefore, a battery box is needed that does not need to distinguish the positive and negative polarities of the batteries when assembling the batteries, so as to shorten the time consumed in assembling the batteries, improve work efficiency, and reduce the safety hazards caused by reverse installation of the batteries. Summary of the invention

[0004] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide a stepless battery box, which can shorten the time consumed in assembling batteries, improve work efficiency, and reduce safety hazards.

[0005] In order to achieve the above-mentioned purpose of the invention, a stepless battery box is provided according to the present invention, characterized in that the stepless battery box comprises: a battery holder for accommodating batteries and an anti-reverse connection circuit board connected to the battery holder, 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 to the G pole of the enhanced N_MOS tube, the G pole of the enhanced P_MOS tube is connected to 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 the load, the S pole of the enhanced N_MOS tube is connected to the negative pole of the load, and the value of N is the number of batteries accommodated in the battery holder.

[0006] The stepless battery box also includes an over-discharge protection circuit board connected to the anti-reverse connection circuit board, and the over-discharge protection circuit board is used to prevent the battery from over-discharging.

[0007] The stepless battery box also includes a battery support top cover and a battery support bottom cover, wherein the battery support top cover is connected to the battery support, and the battery support bottom cover is connected to the anti-reverse connection circuit board.

[0008] When N is 4, the over-discharge protection circuit board includes a first 8-pin enhanced P_MOS tube U1 and a second 8-pin enhanced P_MOS tube U2, a 16-pin over-discharge detection chip U3, first to ninth capacitors C1 to C9 and first to thirteenth resistors R1 to R13, wherein the 1st, 2nd and 3rd pins of U1 and U2 are connected to the positive electrode of the load, one end of R3, C1 and C2; the 5th, 6th, 7th and 8th pins of U1 are connected to the 5th, 6th, 7th and 8th pins of U2, and are connected to one end of R2, R5 and R6 and the positive electrode of the first battery through the anti-reverse connection circuit board; the 4th pins of U1 and U2 are connected to one end of R1; the 1st pin of U3 is connected to the other end of R3, and one end of R3 is connected to the positive electrode of the load and to one end of C1 and C2 ; Pin 2 of U3 is connected to the other end of R2, one end of R2 is connected to pins 5, 6, 7, and 8 of U1 and U2, one end of R5 and R6, and the positive electrode of the first battery through the anti-reverse connection circuit board; Pin 3 of U3 is connected to the other end of R1, one end of R1 is connected to pin 4 of U1 and U2; Pin 4 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, one end of R13 and the negative electrode of the load; Pin 5 of U3 is connected to one end of C3, the other end of C3 is connected to C4, C5, the other end of R10, one end of R12, and pin 7 of U3; the other end of C5 is connected to the other end of R4, one end of R13, the other end of C1, C2 and the negative electrode of the load; The other end is connected to the other end of R12 and the negative pole of the fourth battery through the anti-reverse polarity circuit board; the other end of R12 is connected to the negative pole of the fourth battery through the anti-reverse polarity circuit board; Pin 6 of U3 is connected to one end of C4, the other end of C4 is connected to C3, C5, the other end of R10, one end of R12, and Pin 7 of U3; Pin 7 of U3 is connected to the other end of C3, C4, C5, one end of R12, and the other end of R10; Pins 8 and 9 of U3 are left floating; Pin 10 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 Pin 16 of U3; Pin 11 of U3 is connected to one end of R10; the other end of R10 is connected to one end of R12, C5 The other end of R12 is connected to the other end of R13 and the negative electrode of the fourth battery through the anti-reverse circuit board; one end of R13 is connected to the negative electrode of the load, one end of C5, and the other end of C4, C2, and C1; the 12th pin of U3 is connected to R9 and one end of C9; the other end of R9 is connected to the negative electrode of the third battery through the anti-reverse circuit board; the other end of C9 is connected to the other end of R5, C6, C7, C8, and the 16th pin of U3; one end of R5 is connected to one end of R2, the 5th, 6th, 7th, and 8th pins of U1 and U2, and the positive electrode of the first battery through the anti-reverse circuit board; the 13th pin of U3 is connected to R8 and one end of C8; the other end of R8 is connected to the negative electrode of the second battery through the anti-reverse circuit board;The other end of C8 is connected to R5, the other end of C6, C7, C9, and the 16th pin of U3; the 14th pin of U3 is connected to R7 and one end of C7; the other end of R7 is connected to the negative pole of the first battery through the anti-reverse circuit board; the other end of C7 is connected to R5, the other end of C6, C8, C9, and the 16th pin of U3; the 15th pin of U3 is connected to the other end of R6 and one end of C6; one end of R6 is connected to the positive pole of the first battery through the anti-reverse circuit board, one end of R5, one end of R2, and the 5th, 6th, 7th, and 8th pins of U1 and U2; the other end of C6 is connected to R5, the other end of C7, C8, C9, and the 16th pin of U3; the 16th pin of U3 is connected to the other end of R5, the other end of C6, C7, C8, C9; one end of R5, one end of R2, the 5th, 6th, 7th, and 8th pins of U1 and U2, and the positive pole of the first battery through the anti-reverse circuit board. ;

[0009] The electrodeless battery box according to the present invention can shorten the time consumed in assembling batteries, improve work efficiency, and reduce the potential safety hazards caused by reverse installation of batteries. In addition, the electrodeless battery box according to the present invention can also prevent over-discharge of batteries and effectively extend the service life of batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a structural diagram of a stepless battery box according to an embodiment of the present invention;

[0011] Figure 2A is a six-sided view of a battery holder in a stepless battery box according to an embodiment of the present invention;

[0012] Figure 2B 3D views of the battery holder in the stepless battery box according to an embodiment of the present invention;

[0013] Figure 3 is a schematic diagram showing an electrode welding plate according to an embodiment of the present invention;

[0014] Figure 4 is a connection diagram showing a group of enhancement type P_MOS tubes and enhancement type N_MOS tubes;

[0015] Figure 5 and Figure 6 is a connection diagram showing two groups of enhanced P_MOS tubes and enhanced N_MOS tubes for a reverse connection protection circuit of a single battery;

[0016] Figure 7 1. It is a diagram showing a reverse connection protection circuit of a non-polarized battery box that can be used to place 4 batteries according to an embodiment of the present invention; and

[0017] Figure 8 The over-discharge protection circuit of a non-polar battery box that can be used to accommodate 4 batteries according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0018] By referring to the detailed description and drawings of the following embodiments, the features of the inventive concept and the methods for realizing them can be more easily understood. Hereinafter, the embodiments will be described in more detail with reference to the drawings, wherein the same reference numerals always represent the same elements. However, the present disclosure may be embodied in various different forms and should not be construed as being limited to the embodiments shown herein. On the contrary, these embodiments are provided as examples so that the present disclosure will be thorough and complete, and the various aspects and features of the present disclosure will be fully conveyed to those skilled in the art. Therefore, there is no description of processes, elements and techniques that are unnecessary for a person of ordinary skill in the art to fully understand the aspects and features of the present disclosure. Unless otherwise stated, the same reference numerals represent the same elements throughout the drawings and written descriptions, and therefore, their descriptions are not repeated. In the drawings, the relative sizes of elements, layers and regions may be exaggerated for clarity.

[0019] Figure 1 2 is a structural diagram of a non-polar battery box according to an embodiment of the present invention. Figure 1 The electrodeless battery box includes a battery holder top cover 100, an electrode welding plate 200, a battery holder 300, an anti-reverse connection and over-discharge protection plate 400 and a battery holder bottom cover 500.

[0020] The battery holder top cover 100 and the battery holder bottom cover 500 are protective covers at both ends of the electrodeless battery box, which are used to protect the electrode welding plate 200 and the anti-reverse connection and over-discharge protection plate 400 from the influence of the external environment, and can fix the electrode welding plate 200 and the anti-reverse connection and over-discharge protection plate 400 to the battery holder 300.

[0021] The electrode welding plate 200 is welded with electrodes and connected to the battery holder 300. The electrode welding plate 200 may be omitted and the electrodes may be directly welded to the battery holder 300.

[0022] The battery holder 300 is a part for accommodating batteries. The six sides of the battery holder 300 are shown in FIG. Figure 2A As shown, the three-dimensional diagram of the battery holder 300 is as shown Figure 2B As shown. Figure 2A In the figure, (a) is the front view, (b) is the left view, (c) is the right view, (d) is the rear view, (e) is the top view, and (f) is the bottom view. Figure 2BIn the figure, (a) to (c) show the stereograms without installing the battery, and (d) shows the stereogram with installing the battery. In the current embodiment of the present invention, a battery holder that can accommodate 4 batteries is shown, and the following description will be based on the example of 4 batteries being installed. It is easy for a person skilled in the art to make a non-polar battery box that can accommodate any number of batteries according to the description of the current embodiment.

[0023] from Figure 2A and Figure 2B It can be seen that the two ends of the electrode of the battery holder 300 have the same appearance, and the output of the battery holder 300 is distinguished by positive and negative poles.

[0024] One end of the battery holder 300 is connected to the anti-reverse connection and over-discharge protection board 400. The anti-reverse connection and over-discharge protection board 400 may include a reverse connection protection circuit and an over-discharge protection circuit. The reverse connection protection circuit and the over-discharge protection circuit may be integrated into a PCB board to form the anti-reverse connection and over-discharge protection board 400, which is connected to the battery holder bottom cover 500. The reverse connection protection circuit and the over-discharge protection circuit may not be integrated together, but may be two separate components, namely, a reverse connection protection circuit board and an over-discharge protection circuit board. Those skilled in the art may choose whether to integrate the reverse connection protection circuit and the over-discharge protection circuit together as needed.

[0025] The other end of the battery holder 300 is connected to the electrode welding plate 200 to realize the battery forming a loop. In an exemplary embodiment of the present invention, the described non-polar battery box can accommodate 4 batteries. In this case, a total of 4 electrodes 210 are welded on the electrode welding plate 200 of the non-polar battery box 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. Figure 3 shown.

[0026] The reverse connection protection circuit in the anti-reverse connection and over-discharge protection board 400 utilizes the conduction characteristics of the enhanced P_MOS tube and the enhanced N_MOS tube, and uses an enhanced P_MOS tube and an enhanced N_MOS tube to form a group, the D pole of the enhanced P_MOS tube is connected to the G pole of the enhanced N_MOS tube, and the G pole of the enhanced P_MOS tube is connected to the D pole of the enhanced N_MOS tube.

[0027] A set of enhanced P_MOS transistors 410 and enhanced N_MOS transistors 420 are connected as shown in FIG. Figure 4 As shown. Figure 4In the embodiment, the D pole of the enhanced P_MOS tube 410 is connected to the G pole of the enhanced N_MOS tube 420, the G pole of the enhanced P_MOS tube 410 is connected to the D pole of the enhanced N_MOS tube 420, the D pole of the enhanced P_MOS tube 410 and the G pole of the enhanced N_MOS tube 420 are connected to the positive pole of the battery, and the G pole of the enhanced P_MOS tube 410 and the D pole of the enhanced N_MOS tube 420 are connected to the negative pole of the battery. The S pole of the enhanced P_MOS tube 410 is connected to the positive pole of the load, and the S pole of the enhanced N_MOS tube 420 is connected to the negative pole of the load.

[0028] exist Figure 4 In the example, when a single battery supplies 4.2V, the output voltage between the S pole of the enhancement mode P_MOS tube 410 and the S pole of the enhancement mode N_MOS tube 420 is measured, and the output voltage is 4.1999V.

[0029] The reverse connection protection circuit for one battery is composed of two groups of enhanced P_MOS tubes and enhanced N_MOS tubes, but the positive and negative poles of these two groups are reversed. In this way, no matter whether the battery is connected positively or reversely, there is always one group of MOS tubes in working state, and the other group of MOS tubes is in cut-off state. No current flows, and power consumption will not increase, thus realizing battery reverse connection protection.

[0030] The connection diagram of two sets of enhanced P_MOS tubes 411, 412 and enhanced N_MOS tubes 421, 422 in the reverse connection protection circuit for a single battery is shown in FIG. Figure 5 and Figure 6 shown.

[0031] Figure 5 Shows the battery properly installed.

[0032] exist Figure 5 In the embodiment, the D pole of the first enhancement type P_MOS tube 411 is connected to the G pole of the first enhancement type N_MOS tube 421, and the G pole of the first enhancement type P_MOS tube 411 is connected to the D pole of the first enhancement type N_MOS tube 421; the D pole of the second enhancement type P_MOS tube 412 is connected to the G pole of the second enhancement type N_MOS tube 422, and the G pole of the second enhancement type P_MOS tube 412 is connected to the D pole of the second enhancement type N_MOS tube 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 tube 412 is connected to the S pole of the first enhancement type P_MOS tube 411. The positive pole of the load is connected to the S pole of the second enhancement type P_MOS tube 412 and the S pole of the first enhancement type P_MOS tube 411, and the negative pole of the load is connected to the S pole of the second enhancement type N_MOS tube 422 and the S pole of the first enhancement type N_MOS tube 421.

[0033] When the battery is installed upright, the positive electrode of the battery is connected to the G pole of the second enhancement mode N_MOS tube 422, the D pole of the second enhancement mode P_MOS tube 412, the D pole of the first enhancement mode N_MOS tube 421 and the G pole of the first enhancement mode P_MOS tube 411; the negative electrode of the battery is connected to the D pole of the second enhancement mode N_MOS tube 422, the G pole of the first enhancement mode N_MOS tube 421, the D pole of the first enhancement mode P_MOS tube 411 and the G pole of the second enhancement mode P_MOS tube 412.

[0034] When a single battery supplies 4.2V, the measured output voltage is 4.1999V.

[0035] Figure 6 Shows the battery installed backwards.

[0036] exist Figure 6 In the embodiment, the D pole of the first enhancement type P_MOS tube 411 is connected to the G pole of the first enhancement type N_MOS tube 421, and the G pole of the first enhancement type P_MOS tube 411 is connected to the D pole of the first enhancement type N_MOS tube 421; the D pole of the second enhancement type P_MOS tube 412 is connected to the G pole of the second enhancement type N_MOS tube 422, and the G pole of the second enhancement type P_MOS tube 412 is connected to the D pole of the second enhancement type N_MOS tube 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 tube 412 is connected to the S pole of the first enhancement type P_MOS tube 411. The positive pole of the load is connected to the S pole of the second enhancement type P_MOS tube 412 and the S pole of the first enhancement type P_MOS tube 411, and the negative pole of the load is connected to the S pole of the second enhancement type N_MOS tube 412 and the S pole of the first enhancement type N_MOS tube 421.

[0037] When the battery is reversely installed, the negative electrode of the battery is connected to the G pole of the second enhancement mode N_MOS tube 422, the D pole of the second enhancement mode P_MOS tube 412, the D pole of the first enhancement mode N_MOS tube 421 and the G pole of the first enhancement mode P_MOS tube 411; the positive electrode of the battery is connected to the D pole of the second enhancement mode N_MOS tube 422, the G pole of the first enhancement mode N_MOS tube 411, the D pole of the first enhancement mode P_MOS tube 411 and the G pole of the second enhancement mode P_MOS tube 412.

[0038] When a single battery supplies 4.2V, the measured output voltage is also 4.1999V.

[0039] Figure 7 A reverse connection protection circuit of a non-polarized battery box that can be used to accommodate 4 batteries according to an embodiment of the present invention is shown.

[0040] If the electrodeless battery box is used to place 4 batteries, a reverse connection protection circuit consisting of 8 sets of enhanced P_MOS tubes and enhanced N_MOS tubes is required. The reverse connection protection circuit is as follows: Figure 7 shown.

[0041] As reference Figure 7 In the reverse connection protection circuit shown, the D pole of the enhanced P_MOS tube is connected to the G pole of the enhanced N_MOS tube, and the G pole of the enhanced P_MOS tube is connected to the D pole of the enhanced N_MOS tube. The voltage between the S pole of the enhanced P_MOS tube and the S pole of the enhanced N_MOS tube is the output voltage.

[0042] exist Figure 7 Among them, U4, U5, U8, U9, U12, U13, U16, and U17 are enhanced P_MOS tubes, and U6, U7, U10, U11, U14, U15, U18, and U19 are enhanced N_MOS tubes.

[0043] The first battery is connected to B1_IN_1 and B1_IN_2, refer to Figure 5 and Figure 6 The battery forward / reverse connection principle, the voltage at the output terminals BAT+ and B1_OUT- is the output voltage of the first battery.

[0044] 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.

[0045] Regardless of whether the battery is connected forwardly or reversely, there is always a group of MOS tube combinations in working state, while the other group of MOS tube combinations is in cut-off state. No current flows through, and power consumption will not increase, thus achieving battery reverse connection protection.

[0046] Figure 8 The over-discharge protection circuit of a non-polar battery box that can be used to accommodate 4 batteries according to an embodiment of the present invention is shown.

[0047] Reference Figure 8 The over-discharge protection circuit includes two 8-pin enhanced P_MOS tubes (U1 and U2), a 16-pin over-discharge detection chip (U3), 9 capacitors (C1, C2, C3, C4, C5, C6, C7, C8, C9) and 13 resistors (R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13).

[0048] Pins 1, 2, and 3 of U1 and U2 are connected to the P+ output terminal, one end of R3, C1, and C2, where the P+ output terminal is the positive output of the device and is connected to the positive electrode of the load;

[0049] Pins 5, 6, 7, and 8 of U1 are connected to pins 5, 6, 7, and 8 of U2, and connected to one end of R2, R5, R6, and the BAT+ terminal;

[0050] Pin 4 of U1 and U2 is connected to one end of R1;

[0051] Pin 1 of U3 is connected to the other end of R3, one end of R3 is connected to the P+ output terminal and to one end of C1 and C2;

[0052] Pin 2 of U3 is connected to the other end of R2. One end of R2 is connected to pins 5, 6, 7, 8 of U1 and U2, one end of R5 and R6, and the BAT+ end.

[0053] Pin 3 of U3 is connected to the other end of R1, and one end of R1 is connected to pin 4 of U1 and U2;

[0054] Pin 4 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 is connected to the P- output end, where the P- output end is the negative output of the device and is connected to the negative pole of the load;

[0055] Pin 5 of U3 is connected to one end of C3, and the other end of C3 is connected to C4, C5, the other end of R10, one end of R12, and pin 7 of U3;

[0056] The other end of C5 is connected to the other end of R4, one end of R13, the other ends of C1 and C2 and the P- output end; the other end of R13 is connected to the other end of R12 and the BAT- end; the other end of R12 is connected to the BAT- end;

[0057] Pin 6 of U3 is connected to one end of C4, the other end of C4 is connected to C3, C5, the other end of R10, one end of R12, and pin 7 of U3;

[0058] Pin 7 of U3 is connected to the other end of C3, C4, C5, one end of R12, and the other end of R10;

[0059] Pins 8 and 9 of U3 are left floating;

[0060] Pin 10 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 pin 16 of U3;

[0061] Pin 11 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 pin 7 of U3; the other end of R12 is connected to the other end of R13 and the BAT- end; one end of R13 is connected to the P- output end, one end of C5, and the other end of C4, C2, and C1;

[0062] Pin 12 of U3 is connected to one end of R9 and C9; the other end of R9 is connected to B3_OUT-; the other end of C9 is connected to the other ends of R5, C6, C7, C8, and pin 16 of U3; one end of R5 is connected to one end of R2, pins 5, 6, 7, 8 of U1 and U2, and BAT+;

[0063] Pin 13 of U3 is connected to one end of R8 and C8; the other end of R8 is connected to B2_OUT-; the other end of C8 is connected to the other end of R5, C6, C7, C9 and pin 16 of U3;

[0064] Pin 14 of U3 is 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 ends of R5, C6, C8, C9, and pin 16 of U3;

[0065] Pin 15 of U3 is connected to the other end of R6 and one end of C6; one end of R6 is connected to BAT+, one end of R5, one end of R2, and pins 5, 6, 7, and 8 of U1 and U2; the other end of C6 is connected to the other ends of R5, C7, C8, C9, and pin 16 of U3;

[0066] Pin 16 of U3 is 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, and 8 of U1 and U2, and the BAT+ end.

[0067] The 16-pin over-discharge detection chip (U3) can use an over-discharge detection chip currently sold on the market, for example, Seiko Instruments Inc. S-8254. When using the 16-pin over-discharge detection chip of Seiko Instruments Inc. S-8254, the description of the 16 pins of U3 is shown in Table 1 below.

[0068]

Table 1

[0069]

[0070]

[0071] The output voltages of the four batteries are connected to the 15, 14, 13, and 12 pins of the chip U3. When a single battery is lower than 2.7V, the 3-pin DOP of the chip U3 outputs a high level, which cuts off the MOS tubes at the output ends of U1 and U2, so that there is no voltage between P+ and P-. This achieves battery over-discharge protection.

[0072] When a battery with a voltage greater than 3.0V is used to replace a low-voltage battery, the DOP at pin 3 of chip U3 outputs a low level, turning on the MOS tubes at the output ends of U1 and U2, thus releasing the over-discharge protection.

[0073] Therefore, by referring to the above Figure 8 The over-discharge protection circuit according to the embodiment of the present invention described above can realize over-discharge protection.

[0074] The electrodeless battery box according to the present invention can shorten the time consumed in assembling batteries, improve work efficiency, and reduce the potential safety hazards caused by reverse installation of batteries. In addition, the electrodeless battery box according to the present invention can also prevent over-discharge of batteries and effectively extend the service life of batteries.

[0075] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and / or this specification, and should not be interpreted as an idealized or overly formal meaning unless explicitly defined herein.

[0076] The foregoing is an illustration of example embodiments and should not be construed as limiting them. Although some example embodiments have been described, it will be readily appreciated by those skilled in the art that many modifications may be made in the example embodiments without substantially departing from the novel teachings and advantages of the example embodiments. Therefore, all such modifications are intended to be included within the scope of the example embodiments defined in the claims. In the claims, means-plus-function clauses are intended to cover structures described herein that perform the functions described, and include not only structural equivalents but also equivalent structures. Therefore, it should be understood that the foregoing is an illustration of example embodiments and should not be construed as being limited to the specific embodiments disclosed, and 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, and equivalents of the claims are included therein.

Claims

1. A stepless battery box, characterized in that: The electrodeless battery box includes: a battery holder for accommodating N batteries and an anti-reverse connection circuit board connected to the battery holder, the anti-reverse connection circuit board includes 2N groups of enhanced P_MOS tubes and enhanced N_MOS tubes, wherein each battery corresponds to two groups of enhanced P_MOS tubes and enhanced N_MOS tubes, each group of enhanced P_MOS tubes and enhanced N_MOS tubes includes an enhanced P_MOS tube and an enhanced N_MOS tube, and when the positive and negative directions of the battery are correct, the corresponding enhanced P_MOS tubes and enhanced N_MOS tubes are turned on, and if the battery is inserted with reverse polarity, they are automatically blocked, the D pole of the enhanced P_MOS tube in each group of enhanced P_MOS tubes and enhanced N_MOS tubes is connected to the G pole of the enhanced N_MOS tube, the G pole of the enhanced P_MOS tube is connected to 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 the load, and the S pole of the enhanced N_MOS tube is connected to the negative pole of the load, and the value of N is the number of batteries accommodated in the battery holder.

2. The stepless battery box according to claim 1, characterized in that: The stepless battery box also includes an over-discharge protection circuit board connected to the anti-reverse connection circuit board, and the over-discharge protection circuit board is used to prevent the battery from over-discharging.

3. The stepless battery box according to claim 1, characterized in that: The stepless battery box also includes a battery support top cover and a battery support bottom cover, wherein the battery support top cover is connected to the battery support, and the battery support bottom cover is connected to the anti-reverse connection circuit board.

4. The stepless battery box according to claim 2, characterized in that: When N is 4, the over-discharge protection circuit board includes a first 8-pin enhanced P_MOS tube U1 and a second 8-pin enhanced P_MOS tube U2, a 16-pin over-discharge detection chip U3, first to ninth capacitors C1 to C9 and first to thirteenth resistors R1 to R13, wherein: Pins 1, 2, and 3 of U1 and U2 are connected to the positive electrode of the load, one end of R3, C1, and C2; Pins 5, 6, 7, and 8 of U1 are connected to pins 5, 6, 7, and 8 of U2, and connected to one end of R2, R5, and R6 and the positive electrode of the first battery through the anti-reverse connection circuit board; Pin 4 of U1 and U2 is connected to one end of R1; Pin 1 of U3 is connected to the other end of R3, one end of R3 is connected to the positive pole of the load and to one end of C1 and C2; Pin 2 of U3 is connected to the other end of R2, and one end of R2 is connected to pins 5, 6, 7, and 8 of U1 and U2, one end of R5 and R6, and the positive electrode of the first battery through the anti-reverse connection circuit board; Pin 3 of U3 is connected to the other end of R1, and one end of R1 is connected to pin 4 of U1 and U2; Pin 4 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 is connected to the negative pole of the load; Pin 5 of U3 is connected to one end of C3, and the other end of C3 is connected to C4, C5, the other end of R10, one end of R12, and pin 7 of U3; The other end of C5 is connected to the other end of R4, one end of R13, the other ends of C1 and C2 and the negative electrode of the load; the other end of R13 is connected to the other end of R12 and the negative electrode of the fourth battery through the anti-reverse connection circuit board; the other end of R12 is connected to the negative electrode of the fourth battery through the anti-reverse connection circuit board; Pin 6 of U3 is connected to one end of C4, the other end of C4 is connected to C3, C5, the other end of R10, one end of R12, and pin 7 of U3; Pin 7 of U3 is connected to the other end of C3, C4, C5, one end of R12, and the other end of R10; Pins 8 and 9 of U3 are left floating; Pin 10 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 pin 16 of U3; Pin 11 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 pin 7 of U3; the other end of R12 is connected to the other end of R13 and the negative pole of the fourth battery through the anti-reverse connection circuit board; one end of R13 is connected to the negative pole of the load, one end of C5, and the other end of C4, C2, and C1; Pin 12 of U3 is connected to one end of R9 and C9; the other end of R9 is connected to the negative pole of the third battery through the anti-reverse connection circuit board; the other end of C9 is connected to the other end of R5, C6, C7, C8, and pin 16 of U3; one end of R5 is connected to one end of R2, pins 5, 6, 7, and 8 of U1 and U2, and the positive pole of the first battery through the anti-reverse connection circuit board; Pin 13 of U3 is connected to one end of R8 and C8; the other end of R8 is connected to the negative pole of the second battery through the anti-reverse connection circuit board; the other end of C8 is connected to the other end of R5, C6, C7, C9 and pin 16 of U3; The 14th pin of U3 is 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 anti-reverse connection circuit board; the other end of C7 is connected to the other end of R5, C6, C8, C9 and the 16th pin of U3; Pin 15 of U3 is connected to the other end of R6 and one end of C6; one end of R6 is connected to the positive electrode of the first battery through the anti-reverse connection circuit board, one end of R5, one end of R2, and pins 5, 6, 7, and 8 of U1 and U2; the other end of C6 is connected to the other ends of R5, C7, C8, C9, and pin 16 of U3; Pin 16 of U3 is 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, and 8 of U1 and U2, and the positive pole of the first battery through the anti-reverse connection circuit board.

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