Wireless overcurrent device with lithium battery capable of reversely supplying power

Abstract

The utility model discloses a wireless overcurrent device with a lithium battery capable of reversely supplying power, which comprises a front plate assembly mounted on a door frame and a rear plate assembly mounted on a door body and electrically connected with the front plate assembly in a door closing state. A front plate circuit assembly which is connected with the mains supply and used for supplying power to the rear plate assembly and sending a front plate control instruction is arranged in the front plate assembly, and a battery assembly is arranged in the rear plate assembly. The rear board circuit module is used for being connected with the front board circuit assembly to execute a front board control instruction, charging the battery assembly and reversely supplying power to the front board circuit assembly through the battery assembly when the commercial power is cut off, and the front board circuit assembly comprises a commercial power transformation output circuit. The rear board circuit module comprises a charging circuit which is respectively connected with the battery assembly and the commercial power transformation output circuit and is used for charging the battery assembly, and a battery reverse power supply circuit which is respectively connected with the battery assembly, the commercial power transformation output circuit and the charging circuit and is used for isolating commercial power when the commercial power is accessed and reversely supplying power when the commercial power is cut off. Through the battery reverse power supply circuit, the lithium battery cannot reversely supply power to generate discharge leakage current when the commercial power is connected, enough power can be reversely output to the front plate assembly after the commercial power is cut off, and the line passing device works with low power consumption when only the lithium battery supplies power.

Description

[Technical field]

[0001] The utility model relates to a wireless current regulator capable of reverse power supply by a lithium battery. [Background Technology]

[0002] Nowadays, as smart door locks integrate more and more functions, the power consumed is also increasing. If they are powered only by lithium batteries, there is a problem of too high charging frequency, which cannot meet user needs. Therefore, smart door locks are required to be connected to the mains as a regular power supply and to set up lithium batteries only as a backup power supply.

[0003] Most of the wire passers on the market do not have the function of back-up lithium battery power supply. The wire passers equipped with backup batteries cannot meet the requirements of reverse power supply to the front panel smart lock panel. The main difficulty is the isolation problem between the transformer output and the lithium battery. Therefore, in the existing wire passers equipped with batteries, there is a problem of lithium batteries reverse power supply to generate discharge leakage current when connected to the mains, and there is a problem of insufficient power when the lithium battery reversely supplies power to the front panel after the mains power is cut off, and there is a problem of high power consumption of the wire passer when only the lithium battery is powered. [Contents of the utility model]

[0004] The utility model overcomes the shortcomings of the prior art and provides a wireless overcurrent device capable of reverse power supply by a lithium battery.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A wireless current transmitter capable of reverse power supply by a lithium battery, characterized in that: it comprises a front panel assembly mounted on a door frame and a rear panel assembly mounted on a door body and electrically connected to the front panel assembly in a closed state, the front panel assembly being provided with a front panel circuit assembly connected to a mains power supply for supplying power to the rear panel assembly and sending a front panel control instruction, the rear panel assembly being provided with a rechargeable battery assembly, and a rear panel circuit module for connecting to the front panel circuit assembly to execute the front panel control instruction, charge the battery assembly, and reversely supply power to the front panel circuit assembly through the battery assembly when the mains power is cut off, the front panel circuit assembly comprising a mains power transformer output circuit for supplying power after voltage transformation, rectification and filtering of the mains power, the rear panel circuit module comprising a charging circuit respectively connected to the battery assembly and the mains power transformer output circuit for charging the battery assembly, and a battery reverse power supply circuit respectively connected to the battery assembly, the mains power transformer output circuit, and the charging circuit for isolating the mains power when the mains power is connected and reversely supplying power when the mains power is cut off.

[0007] A wireless overcurrent device that can be reversely powered by a lithium battery as described above is characterized in that: the battery reverse power supply circuit includes a diode D1, the cathode end of the diode D1 is connected to the AC power transformer output circuit, the positive end of the diode D1 is respectively connected to the toggle switch SPST pin 1 and the collector of the transistor Q2, the toggle switch SPST pin 2 is connected to the positive end of the battery assembly, the toggle switch SPST pin 3 is respectively connected to the base of the transistor Q2 and one end of the resistor R8 through the resistor R3, the emitter of the transistor Q2 is respectively connected to the charging circuit and one end of the resistor R7 through the resistor R5, and the other end of the resistor R7 and the other end of the resistor R8 are respectively grounded.

[0008] A wireless overcurrent device that can be reversely powered by a lithium battery as described above is characterized in that: the charging circuit includes a control chip MCU, the control chip MCU pin 1 is connected to the battery reverse power supply circuit, the control chip MCU pin 11 is connected to the positive end of the battery assembly through a resistor R11, the control chip MCU pin 13 is connected to the base of the transistor Q1 through a resistor R4, the collector of the transistor Q1 is connected to the AC power transformer output circuit through a resistor R2, the emitter of the transistor Q1 is respectively connected to the control chip MCU pin 14 and one end of the resistor R6, and the other end of the resistor R6 is grounded.

[0009] A wireless overcurrent device that can be reversely powered by a lithium battery as described above is characterized in that: the AC power transformation output circuit includes a transformer T1, the two input ends of the transformer T1 are respectively connected to the AC power, the two output ends of the transformer T2 are respectively connected to pin 1 and pin 3 of the rectifier bridge DB1, the pin 2 of the rectifier bridge DB1 is respectively connected to the positive end of the electrolytic capacitor C1 and the pin 1 of the voltage regulator chip IC1, the pin 3 of the voltage regulator chip IC1 is respectively connected to the positive end of the electrolytic capacitor C2 and one end of the capacitor C3, the pin 4 of the rectifier bridge DB1, the negative end of the electrolytic capacitor C1, the pin 2 of the voltage regulator chip IC1, the negative end of the electrolytic capacitor C2, and the other end of the capacitor C3 are respectively grounded, and the pin 3 of the voltage regulator chip IC1 outputs a 12V power supply and is respectively connected to the charging circuit and the battery reverse power supply circuit.

[0010] A wireless current regulator that can be reversely powered by a lithium battery as described above is characterized in that: a contact plate is provided on the front panel assembly, the contact plate is connected to the power output terminal of the AC power transformer output circuit, and a contact is provided on the rear panel assembly, the contacts are respectively connected to the charging circuit and the battery reverse power supply circuit, and when the door is closed, the contact plate of the front panel assembly contacts the contact of the rear panel assembly to achieve electrical connection.

[0011] A wireless current controller that can be reversely powered by a lithium battery as described above is characterized in that: a contact bump is provided on the contact end of the contact, a contact bump is provided on the contact end of the contact, and a contact bump is provided on the contact end of the contact. The outer side surface of the contact bump, the outer side surface of the contact, and the outer side surface of the contact disc are respectively provided with a pure silver layer or a silver compound layer.

[0012] A wireless current transmitter that can be reversely powered by a lithium battery as described above is characterized in that: a rear plate assembly includes a rear mounting panel, a rear shell body arranged on the rear side of the rear mounting panel, and a detachable rear cover plate covering the other end of the rear shell body, a rear plate circuit module is arranged in the rear shell body, and a contact extends out of the rear mounting panel through a through hole arranged on the rear of the rear mounting panel, and a spring assembly is provided between the contact and the rear plate circuit module, one end of the spring assembly being in contact with the end of the contact and the other end being in conductive contact with the rear plate circuit module.

[0013] A wireless current transmitter that can be reversely powered by a lithium battery as described above is characterized in that: an annular step is provided on the outer side surface of the contact end, and a limit piece is provided on the rear shell body to cooperate with the annular step to limit the extension length of the contact; a contact groove is provided on the end face of the contact end, and one end of the spring assembly is arranged in the contact groove.

[0014] A wireless current transmitter that can be reversely powered by a lithium battery as described above is characterized in that: the front panel assembly includes a front mounting panel, a front shell body arranged on the rear side of the front mounting panel, and a detachable front cover plate covering the other end of the front shell body, the touch pad is arranged on the front side surface of the front mounting panel, the front panel circuit assembly is arranged in the front shell body, and the touch pad and the front panel circuit assembly are electrically connected by a wire.

[0015] The wireless current regulator capable of reverse power supply by a lithium battery as described above is characterized in that a touch plate positioning plate is provided on the front side of the front mounting panel, a plurality of positioning plate recesses are provided on the touch plate positioning plate, and the touch plate is arranged in the positioning plate recesses.

[0016] The beneficial effects of the utility model are:

[0017] The utility model has a mains transformer output circuit in the front panel assembly which can supply power to the front panel assembly and the rear panel assembly, and a charging circuit connected to the mains transformer output circuit for charging the battery assembly in the rear panel assembly, and a battery reverse power supply circuit for isolating the mains when the mains is connected and reversely supplying power when the mains is cut off. The battery reverse power supply circuit can prevent the lithium battery from reversely supplying power to generate discharge leakage current when the mains is connected, and can reversely output sufficient power to the front panel assembly after the mains is cut off, and can realize the function of the wire passer working with low power consumption when only the lithium battery is powered. [Drawings]

[0018] Figure 1 This is a schematic diagram of the separation of the front plate assembly and the rear plate assembly of the utility model;

[0019] Figure 2 This is one of the exploded views of the front panel assembly of the utility model;

[0020] Figure 3 This is the utility model mains voltage transformation output circuit diagram;

[0021] Figure 4This is a charging circuit and a battery reverse power supply circuit diagram of the utility model;

[0022] Figure 5 This is the second exploded view of the front panel assembly of the present utility model;

[0023] Figure 6 This is a schematic diagram of the rear panel assembly of the utility model;

[0024] Figure 7 This is an exploded view of the rear panel assembly of the present invention. [Specific implementation method]

[0025] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one of the features.

[0027] like Figure 1-7 As shown, a wireless current transmitter capable of reverse power supply by a lithium battery comprises a front panel assembly 1 mounted on a door frame and a rear panel assembly 2 mounted on a door body and electrically connected to the front panel assembly 1 in a closed state, the front panel assembly 1 is provided with a front panel circuit assembly connected to the mains for supplying power to the rear panel assembly 2 and sending front panel control instructions, the rear panel assembly 2 is provided with a rechargeable battery assembly 3, and a rear panel circuit module 4 for connecting to the front panel circuit assembly to execute the front panel control instructions, charge the battery assembly 3, and reversely supply power to the front panel circuit assembly through the battery assembly 3 when the mains power is cut off, the front panel circuit assembly comprises a mains transformer output circuit 51 for supplying power after filtering, rectifying and voltage stabilizing the mains, the rear panel circuit module 4 comprises a charging circuit 41 respectively connected to the battery assembly 3 and the mains transformer output circuit 51 for charging the battery assembly 3, and a battery reverse power supply circuit 42 respectively connected to the battery assembly 3, the mains transformer output circuit 51, and the charging circuit 41 for isolating the mains when the mains power is connected and reversely supplying power when the mains power is cut off.

[0028] In actual use, when the door is in a closed state, the front panel assembly 1 arranged on the door frame and the rear panel assembly 2 arranged on the door body are in contact and electrically connected, that is, the front panel circuit assembly arranged on the front panel assembly 1 and the rear panel circuit module 4 arranged on the rear panel assembly 2 are electrically connected. At this time, the mains transformer output circuit 51 in the front panel circuit assembly is connected to the mains, and the input mains is transformed, rectified and filtered to supply power to other circuits of the front panel circuit assembly and to the rear panel circuit module 4 respectively, and each circuit on the rear panel circuit module 4 is powered on and works, wherein the charging circuit 41 is connected to the power output end of the mains transformer output circuit 51 to charge the battery assembly 3 after being powered, and the battery assembly 3 does not reversely supply power to generate discharge leakage current; on the other hand, after the mains power is cut off, when the mains transformer output circuit 51 has no power output, the battery reverse power supply circuit 42 draws power from the battery assembly 3, and reversely supplies power to each circuit on the rear panel circuit module 4 and reversely supplies power to the front panel circuit assembly, so that the front panel circuit assembly and the rear panel circuit module 4 remain powered on and in working state.

[0029] like Figure 3 As shown, the mains voltage conversion output circuit 51 includes a transformer T1, the two input ends of the transformer T1 are respectively connected to the mains, the two output ends of the transformer T2 are respectively connected to the pin 1 and pin 3 of the rectifier bridge DB1, the pin 2 of the rectifier bridge DB1 is respectively connected to the positive terminal of the electrolytic capacitor C1 and the pin 1 of the voltage regulator chip IC1, the pin 3 of the voltage regulator chip IC1 is respectively connected to the positive terminal of the electrolytic capacitor C2 and one end of the capacitor C3, the pin 4 of the rectifier bridge DB1, the negative terminal of the electrolytic capacitor C1, the pin 2 of the voltage regulator chip IC1, the negative terminal of the electrolytic capacitor C2, and the other end of the capacitor C3 are respectively grounded, and the pin 3 of the voltage regulator chip IC1 outputs a 12V power supply and is respectively connected to the charging circuit 41 and the battery reverse power supply circuit 42. When there is mains input, the mains is stepped down by the transformer T1, converted into direct current by the rectifier bridge DB1, filtered by the electrolytic capacitor C1 and stabilized by the voltage regulator chip IC1 to output a 12V voltage for external power supply.

[0030] like Figure 4As shown, the charging circuit 41 includes a control chip MCU, the control chip MCU pin 1 is connected to the battery reverse power supply circuit 42, the control chip MCU pin 11 is connected to the positive end of the battery assembly 3 through a resistor R11, the control chip MCU pin 13 is connected to the base of the transistor Q1 through a resistor R4, the transistor Q1 collector is connected to the mains transformer output circuit 51 through a resistor R2, and the transistor Q1 emitter is respectively connected to the control chip MCU pin 14 and one end of the resistor R6, and the other end of the resistor R6 is grounded. When the mains is connected, the charging circuit 41 has a 12V power input, at this time the transistor Q1 is turned on, the control chip MCU pin 14 detects the power input signal, and the battery assembly 3 is charged through the charging enable end of the control chip MCU pin 11; when the charging circuit 41 has no power input, the transistor Q1 is not turned on, the control chip MCU pin 14 does not detect the power input signal, and the charging enable end of the control chip MCU pin 11 is closed. At the same time, when the charging enable terminal of the control chip MCU charges the battery assembly 3, the battery assembly 3 stops charging after being fully charged by relying on the internal circuit control of the battery; when the mains power is cut off and the battery assembly 3 reversely supplies power, the charging enable terminal of the control chip MCU will not form a charging loop.

[0031] like Figure 4 As shown, the battery reverse power supply circuit 42 includes a diode D1, the cathode end of the diode D1 is connected to the mains transformer output circuit 51, the anode end of the diode D1 is respectively connected to the toggle switch SPST pin 1 and the collector of the transistor Q2, the toggle switch SPST pin 2 is connected to the positive end of the battery assembly 3, the toggle switch SPST pin 3 is respectively connected to the base of the transistor Q2 and one end of the resistor R8 through the resistor R3, the emitter of the transistor Q2 is respectively connected to the charging circuit 41 and one end of the resistor R7 through the resistor R5, and the other end of the resistor R7 and the other end of the resistor R8 are respectively grounded. Among them, the diode D1 plays the role of isolating the mains transformer output circuit 51 from the battery assembly 3. When the mains power is cut off, the battery assembly 3 reversely supplies power to the front panel circuit module through the pins 2 and 1 of the toggle switch SPST and the diode D1. On the other hand, since the product is not powered during transportation, the toggle switch SPST is turned to the 2 and 3 positions. At this time, the battery assembly 3 is not powered and does not output power to the outside. After installation and connection to the mains, when the toggle switch SPST is turned to the 1 and 2 positions, the pin 1 of the control chip MCU detects a voltage change, and the indicator light connected to the control chip MCU flashes three times and then goes out, indicating that the mains is powered. When the toggle switch is turned to the 2 and 3 positions, the MCU detects a voltage increase on the pin 1, and the indicator light connected to the control chip MCU flashes three times and then stays on. The two states of reverse power supply by the lithium battery and connection to the mains are realized.

[0032] like Figure 1-2As shown, the front panel assembly 1 is provided with a contact plate 6, which is connected to the power output end of the mains transformer output circuit 51, and the rear panel assembly 2 is provided with a contact 7, which is respectively connected to the charging circuit 41 and the battery reverse power supply circuit 42. When the door is closed, the contact plate 6 of the front panel assembly 1 contacts the contact 7 of the rear panel assembly 2 to achieve electrical connection. In this case, four contact plates 6 and four contacts 7 are provided. When the door is closed, the contact plates 6 and the contacts 7 are connected one by one to form a 4P connection line, which transmits power, ground, signal line 1, and signal line 2 respectively, solving the problem of realizing the power supply and communication functions of the products outside the door and embedded in the door.

[0033] like Figure 1-2 As shown, a contact bump 71 is provided on the contact end of the contact 7, and a contact bump 71 is provided on the contact end of the contact 7. A pure silver layer or a silver compound layer is provided on the outer side of the contact bump 71, the outer side of the contact 7, and the outer side of the contact plate 6, respectively, wherein the silver compound is silver nickel, silver cadmium oxide, silver tin oxide, silver zinc oxide, silver copper, or silver tin oxide indium oxide. In this case, a silver tin oxide indium oxide layer is provided on the outer side of the contact bump 71, and a pure silver layer is provided on the outer side of the contact 7 and the outer side of the contact plate 6. By providing the contact bump 71, it is ensured that the contact 7 and the contact plate 6 are electrically connected in contact when the door is closed. At the same time, a silver tin oxide indium oxide layer is provided on the outer side of the contact bump 71, which reduces the oxidation effect of the conductive contact position between the contact and the contact plate under the action of long-term voltage changes. Pure silver layers are provided on the outer side of the contact and the outer side of the contact plate, respectively, to reduce the oxidation effect of the outer side, thereby ensuring a good conductive connection effect between the contact and the contact plate under long-term use.

[0034] like Figure 2 and Figure 5 As shown, the rear panel assembly 2 includes a rear mounting panel 21, a rear housing 22 disposed on the rear side of the rear mounting panel 21, and a detachable rear cover 23 covering the other end of the rear housing 22. The rear panel circuit module 4 is disposed in the rear housing 22. The contact 7 extends out of the rear mounting panel 21 through a through hole 24 disposed on the rear of the rear mounting panel 21. A spring assembly 25 is disposed between the contact 7 and the rear panel circuit module 4, one end of which abuts against the end of the contact 7 and the other end of which abuts against the rear panel circuit module 4 in an electrically conductive manner. In the rear panel assembly 2, the spring assembly 25 enables the electrical connection between the contact 7 and the rear panel circuit module 4. During the door closing process, the contact 7 contacts the contact plate 6 and then presses against the contact plate 6. Subsequently, the contact 7 is gradually pressed by the contact plate to move toward the inner side of the rear panel assembly 2 and compress the spring assembly 25, ensuring that the contact 7 contacts the contact plate 6 to achieve electrical connection.

[0035] like Figure 2 and Figure 5As shown, an annular step 72 is provided on the outer side surface of the end of the contact 7, and a limiting member 26 is provided on the rear housing 22 to cooperate with the annular step 72 to limit the extension length of the contact 7. The limiting member 26 limits the maximum length of the contact 7 after it extends out of the through hole 24 and is installed on the panel 21, and the contact 7 is confined in the through hole 24 to prevent the contact 7 from escaping from the through hole 24; a contact groove 73 is provided on the end surface of the end of the contact 7, and one end of the spring assembly 25 is arranged in the contact groove 73 to confine the spring assembly 25 in the contact 7 to prevent the spring assembly 25 from shifting during movement.

[0036] like Figure 6-7 As shown, the front panel assembly 1 includes a front mounting panel 11, a front housing 12 arranged at the rear side of the front mounting panel 11, and a detachable front cover 13 covering the other end of the front housing 12. The touch plate 6 is arranged on the front side of the front mounting panel 11, and the front panel circuit assembly is arranged in the front housing 12. The touch plate 6 and the front panel circuit assembly are electrically connected through a wire. A touch plate positioning plate 14 is arranged on the front side of the front mounting panel 11. A plurality of positioning plate recesses 141 are arranged on the touch plate positioning plate 14, and the touch plate 6 is arranged in the positioning plate recesses 141. By arranging the touch plate positioning plate 14 and arranging the positioning plate recesses 141 on the touch plate positioning plate 14, it is convenient to position and install the touch plate 6 and to make the contact 7 and the touch plate 6 realize contact and electrical connection during the door closing process.

[0037] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A wireless overcurrent device capable of reverse power supply by a lithium battery, characterized in that: The invention comprises a front panel assembly (1) mounted on a door frame and a rear panel assembly (2) mounted on a door body and electrically connected to the front panel assembly (1) in a door closing state, wherein the front panel assembly (1) is provided with a front panel circuit assembly connected to a mains power supply for supplying power to the rear panel assembly (2) and sending a front panel control instruction, and the rear panel assembly (2) is provided with a rechargeable battery assembly (3) and a rear panel assembly (3) for connecting to the front panel circuit assembly to execute the front panel control instruction, charge the battery assembly (3) and reversely supply power to the front panel circuit assembly through the battery assembly (3) when the mains power is off. The front panel circuit module (4) comprises a mains transformer output circuit (51) for transforming, rectifying and filtering the mains power and then supplying power; the rear panel circuit module (4) comprises a charging circuit (41) connected to the battery assembly (3) and the mains transformer output circuit (51) for charging the battery assembly (3); and a battery reverse power supply circuit (42) connected to the battery assembly (3), the mains transformer output circuit (51) and the charging circuit (41) for isolating the mains power when the mains power is connected and reversely supplying power when the mains power is disconnected.

2. A wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 1, characterized in that: The battery reverse power supply circuit (42) comprises a diode D1, wherein the cathode end of the diode D1 is connected to the mains transformer output circuit (51), the anode end of the diode D1 is respectively connected to the toggle switch SPST pin 1 and the collector of the transistor Q2, the toggle switch SPST pin 2 is connected to the anode end of the battery assembly (3), the toggle switch SPST pin 3 is respectively connected to the base of the transistor Q2 and one end of the resistor R8 through a resistor R3, the emitter of the transistor Q2 is respectively connected to the charging circuit (41) and one end of the resistor R7 through a resistor R5, and the other ends of the resistor R7 and the other ends of the resistor R8 are respectively grounded.

3. A wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 1, characterized in that: The charging circuit (41) comprises a control chip MCU, wherein a pin 1 of the control chip MCU is connected to a battery reverse power supply circuit (42), a pin 11 of the control chip MCU is connected to a positive terminal of a battery assembly (3) via a resistor R11, a pin 13 of the control chip MCU is connected to a base of a transistor Q1 via a resistor R4, a collector of the transistor Q1 is connected to a mains voltage conversion output circuit (51) via a resistor R2, an emitter of the transistor Q1 is respectively connected to a pin 14 of the control chip MCU and one end of a resistor R6, and the other end of the resistor R6 is grounded.

4. The wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 1, characterized in that: The mains voltage conversion output circuit (51) comprises a transformer T1, wherein two input ends of the transformer T1 are respectively connected to the mains, two output ends of the transformer T2 are respectively connected to pin 1 and pin 3 of a rectifier bridge DB1, pin 2 of the rectifier bridge DB1 is respectively connected to the positive terminal of an electrolytic capacitor C1 and pin 1 of a voltage stabilizing chip IC1, pin 3 of the voltage stabilizing chip IC1 is respectively connected to the positive terminal of an electrolytic capacitor C2 and one end of a capacitor C3, pin 4 of the rectifier bridge DB1, the negative terminal of the electrolytic capacitor C1, pin 2 of the voltage stabilizing chip IC1, the negative terminal of the electrolytic capacitor C2 and the other end of the capacitor C3 are respectively grounded, and pin 3 of the voltage stabilizing chip IC1 outputs a 12V power supply and is respectively connected to a charging circuit (41) and a battery reverse power supply circuit (42).

5. The wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 1, characterized in that: The front panel assembly (1) is provided with a contact plate (6), which is connected to the power output end of the commercial power transformer output circuit (51); the rear panel assembly (2) is provided with a contact head (7), which is respectively connected to the charging circuit (41) and the battery reverse power supply circuit (42); in the closed state, the contact plate (6) of the front panel assembly (1) and the contact head (7) of the rear panel assembly (2) are in contact with each other to achieve electrical connection.

6. A wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 5, characterized in that: A contact convex point (71) is provided on the contact end of the contact (7), and a pure silver layer or a silver compound layer is provided on the outer side surface of the contact convex point (71), the outer side surface of the contact (7), and the outer side surface of the contact plate (6).

7. The wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 5, characterized in that: The rear panel assembly (2) comprises a rear mounting panel (21), a rear shell (22) arranged on the rear side of the rear mounting panel (21), and a detachable rear cover (23) covering the other end of the rear shell (22); the rear panel circuit module (4) is arranged in the rear shell (22); the contact (7) extends out of the rear mounting panel (21) through a through hole (24) arranged on the rear of the rear mounting panel (21); and a spring assembly (25) is provided between the contact (7) and the rear panel circuit module (4), one end of which is in contact with the end of the contact (7) and the other end of which is in conductive contact with the rear panel circuit module (4).

8. The wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 7, characterized in that: An annular step (72) is provided on the outer side surface of the end of the contact (7), and a limiter (26) is provided on the rear housing (22) for cooperating with the annular step (72) to limit the extension length of the contact (7); a contact groove (73) is provided on the end surface of the end of the contact (7), and one end of the spring assembly (25) is arranged in the contact groove (73).

9. The wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 5, characterized in that: The front panel assembly (1) comprises a front mounting panel (11), a front housing (12) arranged at the rear side of the front mounting panel (11), and a detachable front cover (13) covering the other end of the front housing (12); a touch pad (6) is arranged on the front side surface of the front mounting panel (11); a front panel circuit assembly is arranged in the front housing (12); and the touch pad (6) and the front panel circuit assembly are electrically connected via a wire.

10. A wireless overcurrent device capable of reverse power supply by a lithium battery according to claim 9, characterized in that: A touch plate positioning plate (14) is provided on the front side of the front installation panel (11), a plurality of positioning plate recesses (141) are provided on the touch plate positioning plate (14), and the touch plate (6) is arranged in the positioning plate recesses (141).

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