CN214590606U - Direct current power-on protection controller after external switch self-locking - Google Patents
Direct current power-on protection controller after external switch self-locking Download PDFInfo
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- CN214590606U CN214590606U CN202120289273.8U CN202120289273U CN214590606U CN 214590606 U CN214590606 U CN 214590606U CN 202120289273 U CN202120289273 U CN 202120289273U CN 214590606 U CN214590606 U CN 214590606U
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Abstract
The utility model discloses a direct current power-on protection controller after self-locking of an external switch, which comprises a discharge loop access monitoring circuit, an identification resistance access monitoring circuit, a discharge protection execution circuit and a micro control unit; the discharge circuit access monitoring circuit is composed of an external discharge equipment load, an external switch and a simulation front end IC, the identification resistor access monitoring circuit is composed of an external identification resistor, a first resistor, a second resistor, a third resistor and a first transistor, and the discharge protection execution circuit is composed of a fourth resistor, a fifth resistor and a discharge power device. The utility model discloses can provide the power-on protection when external load switch closes earlier and inserts the positive negative pole of power again, also can provide the power-on protection when the battery inserts the electrical apparatus that does not have the discernment to satisfied the power consumption safety demand of the high-power product of direct current, improved the power consumption security greatly, can avoid causing the potential safety hazard, prolonged the life of equipment.
Description
Technical Field
The utility model belongs to the technical field of go up the electric protection, a go up electric protection circuit, concretely relates to electric protection control ware is gone up to external switch auto-lock back direct current.
Background
Some special dc electrical devices, such as dc angle grinder, are usually used to meet the following situations:
1. when the switch of the electric equipment is closed, if the direct current power supply is directly connected, abnormal opening can be caused;
2. when the controller in the power supply is connected to the unidentified discharging load, the load is not matched with the power supply, and the power supply or the load is overloaded;
the situations not only can damage the operation object, but also can bring potential safety hazards to operators or the direct current electrical equipment due to misoperation or other factors, and influence the service life of the direct current electrical equipment.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides a protection control ware on external switch auto-lock back direct current to the realization is closed earlier at external load switch and is inserted the positive negative pole of power and insert the power protection when having no discernment with electrical apparatus.
For solving the technical problem, realize above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
a direct current power-on protection controller after an external switch is self-locked comprises a discharge loop access monitoring circuit, an identification resistor access monitoring circuit, a discharge protection execution circuit and a micro control unit;
the discharging loop access monitoring circuit is composed of an external discharging equipment load, an external switch and a simulation front end IC, wherein the external discharging equipment load and the external switch are positioned in the discharging equipment, and the simulation front end IC is positioned in the battery pack;
the identification resistor access monitoring circuit is composed of an external identification resistor, a first resistor, a second resistor, a third resistor and a first transistor, wherein the external identification resistor is positioned in the discharging equipment, and the first resistor, the second resistor, the third resistor and the first transistor are positioned in the battery pack;
the discharge protection execution circuit is composed of a fourth resistor, a fifth resistor and a discharge power device, wherein the fourth resistor, the fifth resistor and the discharge power device are all positioned in a battery pack;
the load of the external discharge equipment and the external switch are connected between the positive electrode of the power input end of the discharge equipment and the negative electrode of the electrical input end in series, the power output end of the analog front-end IC is connected with the positive electrode of the power output end of the battery pack, the load access detection end of the analog front-end IC is connected with the negative output end of the power supply of the battery pack, the positive electrode of the power input end of the discharge equipment is butted with the positive electrode of the power output end of the battery pack, the negative electrode of the electrical input end of the discharge equipment is butted with the negative output end of the power supply of the battery pack, the power input end of the analog front-end IC is connected with a chip power supply, the MCU power-down control input end of the analog front-end IC is connected with the MCU power-down control output end of the micro control unit, and the MCU power input end of the micro control unit is connected with the chip power supply;
the first resistor is connected between a chip power supply and the base of the first transistor, the second resistor is connected between a low-power consumption detection end of the micro control unit and the base of the first transistor, an emitting electrode of the first transistor is connected with the chip power supply, two ends of the external identification resistor are respectively connected with a third identification resistor detection end and a fourth identification resistor detection end of the discharge device, a collecting electrode of the first transistor is connected with the second identification resistor detection end of the battery pack, the external identification resistor access detection end of the micro control unit is connected with the first identification resistor detection end of the battery pack, the third resistor is connected between the external identification resistor access detection end of the micro control unit and the ground, and the first identification resistor detection end of the battery pack is in butt joint with the third identification resistor detection end of the discharge device, the second identification resistance detection end of the battery pack is in butt joint with the fourth identification resistance detection end of the discharge equipment;
the fourth resistor is connected between the grid of the discharge power device and the discharge protection control end of the micro control unit, the fifth resistor is connected between the grid of the discharge power device and the source electrode of the discharge power device, the drain electrode of the discharge power device is connected with the negative electrode of the power supply output end of the battery pack, and the source electrode of the discharge power device is connected with the ground; the positive electrode of the battery pack battery core group is connected with the positive electrode of the power output end of the battery pack, and the negative electrode of the battery pack battery core group is connected with the source electrode of the discharge power device.
Furthermore, the discharging equipment comprises a diode connected with the external discharging equipment in parallel, the anode of the diode is connected with the anode of the power input end of the discharging equipment, and the cathode of the diode is connected with the cathode of the power input end of the discharging equipment.
Further, the battery package with discharging equipment connects the in-process, the positive and power negative output of power output end of battery package respectively with discharging equipment's the anodal and the negative of electrical input end connect and connect earlier, the first discernment resistance detection end and the second discernment resistance detection end of battery package respectively with discharging equipment's third discernment resistance detection end and fourth discernment resistance detection end connect and connect the back.
Further, the positive and power negative output of power output end of battery package and first identification resistance sense terminal and the second identification resistance sense terminal of battery package all adopt public inserted sheet to follow draw forth on the casing of battery package, the positive and electric input end negative pole of power input end of discharge apparatus and third identification resistance sense terminal and the fourth identification resistance sense terminal of discharge apparatus all adopt female inserted sheet to follow draw forth on the casing of discharge apparatus.
Further, the anodal and the power negative output of power output of battery package all adopt long public inserted sheet, the first discernment resistance detection end and the second discernment resistance detection end of battery package all adopt short public inserted sheet, the structural dimension of long public inserted sheet is longer than the structural dimension of short public inserted sheet, discharging equipment's the anodal and the electrical input negative pole of power input all adopt long female inserted sheet, discharging equipment's third discernment resistance detection end and fourth discernment resistance detection end all adopt short female inserted sheet, the structural dimension of long female inserted sheet is good at the structural dimension of short female inserted sheet, just long female inserted sheet with the structural dimension of long public inserted sheet is corresponding, short female inserted sheet with the structural dimension of short public inserted sheet is corresponding.
When the discharging equipment is connected into the battery pack after the external switch is closed, the power interface is used for adopting the male insertion piece and the female insertion piece with longer sizes, the resistance recognition interface adopts the mechanical structure characteristics of the male insertion piece and the female insertion piece with shorter sizes, so that the discharging positive and negative electrode loops are connected in advance of the external recognition resistor, the voltage of the power supply negative electrode output end of the battery pack is raised to electrify the micro control unit of the battery pack, and the micro control unit judges that the external recognition resistor is not connected at the moment, so that the micro control unit of the battery pack automatically enters a dormant state and keeps the discharging power device to be switched off, and the self-locking electrifying protection function of the external switch is realized. Otherwise, when the discharging device is connected to the battery pack firstly and then the external switch is closed, the micro control unit of the battery pack is electrified to confirm that the external identification resistor is connected, and the micro control unit turns on the discharging power device to complete the normal starting discharging function.
The utility model has the advantages that:
the utility model discloses can provide the power-on protection when external load switch closes earlier and inserts the positive negative pole of power again, also can provide the power-on protection when the battery inserts the electrical apparatus that does not have the discernment to satisfied the power consumption safety demand of the high-power product of direct current, improved the power consumption security greatly, can avoid causing the potential safety hazard, prolonged the life of equipment.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic view of the power pin structure of the present invention;
fig. 3 is a logic block diagram of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. The description as set forth herein is intended to provide a further understanding of the invention and forms a part of this application and the exemplary embodiments and descriptions thereof are presented for purposes of illustration and description and are not intended to limit the invention in any way.
Referring to fig. 1, a direct current power-on protection controller after self-locking of an external switch includes a discharge loop access monitoring circuit, an identification resistor access monitoring circuit, a discharge protection execution circuit and a micro control unit U1;
the discharge loop access monitoring circuit is composed of an external discharge equipment load M, an external switch S1 and a simulation front end IC U2, wherein the external discharge equipment load M and the external switch S1 are located in the discharge equipment 2, and the simulation front end IC U2 is located in the battery pack 1;
the identification resistor access monitoring circuit is composed of an external identification resistor RID, a first resistor R1, a second resistor R2, a third resistor R3 and a first transistor Q1, wherein the external identification resistor RID is located in the discharging device 2, and the first resistor R1, the second resistor R2, the third resistor R3 and the first transistor Q1 are located in the battery pack 1;
the discharge protection execution circuit is composed of a fourth resistor R4, a fifth resistor R5 and a discharge power device Q2, wherein the fourth resistor R4, the fifth resistor R5 and the discharge power device Q2 are all located in the battery pack 1;
the external discharging equipment load M and the external switch S1 are connected in series between the positive electrode P + of the power input end of the discharging equipment 2 and the negative electrode P-of the electrical input end, the LDO power output end U2-1 of the analog front end IC U2 is connected with the positive electrode B + of the power output end of the battery pack 1, the load of the analog front end IC U2 is connected with the detection end U2-2 and the negative electrode output end B-of the power supply of the battery pack 1, the positive electrode P + of the power input end of the discharging equipment 2 is connected with the positive electrode B + of the power output end of the battery pack 1, the negative electrode P-of the electrical input end of the discharging equipment 2 is connected with the negative electrode output end B-of the power supply of the battery pack 1, the LDO power input end U2-3 of the analog front end IC U2 is connected with the chip power supply VCC, the MCU power-down control input end U2-4 of the analog front end IC U2 is connected with the MCU power-down control output end U1 of the micro control unit U1-1 connection, the MCU power input terminal U1-2 of the MCU U1 being connected to the chip power VCC;
the first resistor R1 is connected between a chip power supply VCC and the base of the first transistor Q1, the second resistor R2 is connected between the low power consumption detection end U1-3 of the micro control unit U1 and the base of the first transistor Q1, the emitter of the first transistor Q1 is connected with the chip power supply VCC, two ends of the external identification resistor RID are respectively connected with the third identification resistor detection end ID3 and the fourth identification resistor detection end ID4 of the discharge device 2, the collector of the first transistor Q1 is connected with the second identification resistor detection end ID2 of the battery pack 1, the external identification resistor access detection end U1-4 of the micro control unit U1 is connected with the first identification resistor detection end ID1 of the battery pack 1, the third resistor R3 is connected between the external identification resistor access detection end U1-4 of the micro control unit U1 and the detection end U1-4 and the ground GND, the first recognition resistance detection terminal ID1 of the battery pack 1 is docked with the third recognition resistance detection terminal ID3 of the discharge device 2, and the second recognition resistance detection terminal ID2 of the battery pack 1 is docked with the fourth recognition resistance detection terminal ID4 of the discharge device 2;
the fourth resistor R4 is connected between the gate of the discharge power device Q2 and a discharge protection control end U1-5 of the micro control unit U1, the fifth resistor R5 is connected between the gate of the discharge power device Q2 and the source of the discharge power device Q2, the drain of the discharge power device Q2 is connected with the cathode B-of the power output end of the battery pack 1, and the source of the discharge power device Q2 is connected with the ground GND; the positive electrode of the battery pack 1 battery core group is connected with the positive electrode B + of the power output end of the battery pack 1, and the negative electrode of the battery pack 1 battery core group is connected with the source electrode of the discharging power device Q2.
Further, referring to fig. 1, the discharge device 2 includes a diode D1 connected in parallel with the external discharge device load M, an anode of the diode D1 is connected to an anode P + of the power input terminal of the discharge device 2, and a cathode of the diode D1 is connected to a cathode P-of the power input terminal of the discharge device 2.
Further, in the process of inserting the battery pack 1 and the discharging device 2, the positive B + and negative B-power output terminals of the battery pack 1 and the positive P + and negative P-power input terminals of the discharging device 2 are inserted in advance, and the first ID1 and the second ID2 of the battery pack 1 are inserted in the back of the third ID3 and the fourth ID4 of the discharging device 2.
Further, referring to fig. 2, the positive electrode B + and the negative electrode B + of the power output terminal of the battery pack 1, and the first identification resistance detection terminal ID1 and the second identification resistance detection terminal ID2 of the battery pack 1 are all led out from the casing of the battery pack 1 by using male insertion pieces, and the positive electrode P + and the negative electrode P-of the power input terminal of the discharging device 2, and the third identification resistance detection terminal ID3 and the fourth identification resistance detection terminal ID4 of the discharging device 2 are all led out from the casing of the discharging device 2 by using female insertion pieces.
Further, referring to fig. 2, the positive pole B + of the power output end and the negative pole B-of the power output end of the battery pack 1 both use a long male plug-in piece a1, the first and second recognition resistance detection terminals ID1 and ID2 of the battery pack 1 each employ a short male tab B1, the structural size of the long male plug-in piece A1 is longer than that of the short male plug-in piece B1, the anode P + of the power input end and the cathode P-of the electrical input end of the discharge device 2 both adopt a long female plug-in piece A2, the third identification resistance detection terminal ID3 and the fourth identification resistance detection terminal ID4 of the discharge device 2 both adopt a short female plug-in strip B2, the structural size of the long female plug-in strip A2 is longer than that of the short female plug-in strip B2, and the long female plug-in piece A2 corresponds to the structure size of the long male plug-in piece A1, and the short female plug-in piece B2 corresponds to the structure size of the short male plug-in piece B1.
The left diagram in fig. 2 represents a state when the discharging device 2 is not inserted with the battery pack 1, and at this time, the discharging positive and negative electrode loops and the external identification resistor RID are not connected; fig. 2 is a state in which when the discharging device 2 is just inserted into the battery pack 1, the positive electrode B + and the negative electrode B-of the power output terminal of the battery pack 1 are first connected to the positive electrode P + of the power input terminal of the discharging device 2 and the negative electrode P-of the power input terminal of the discharging device 2, and the first identifying resistance detecting terminal ID1 and the second identifying resistance detecting terminal ID2 of the battery pack 1 are not connected to the third identifying resistance detecting terminal ID3 and the fourth identifying resistance detecting terminal ID4 of the discharging device 2, at this time, the discharging positive and negative circuits are connected, and the external identifying resistance RID is not connected; the right graph in fig. 2 shows that when discharging device 2 is inserted into battery pack 1 completely, the positive B + of power output end and power negative output end B-of battery pack 1 connect with the positive P + of power input end and the negative P-of power input end of discharging device 2 respectively and connect, just the first identifying resistance detection end ID1 and the second identifying resistance detection end ID2 of battery pack 1 connect with the state that third identifying resistance detection end ID3 and fourth identifying resistance detection end ID4 of discharging device 2 connect and connect, positive negative pole return circuit and external identifying resistance RID have all been inserted this moment.
When the discharging device 2 is connected to the battery pack 1 after the external switch S1 is closed, the power interface shown in fig. 2 is used to adopt the male plug and the female plug with longer dimensions, and the resistance recognition interface adopts the mechanical structure characteristics of the male plug and the female plug with shorter dimensions, so that the discharging positive and negative electrode loops are connected before the external recognition resistor RID, at this time, the voltage at the power negative electrode output end B-of the battery pack 1 is raised to electrify the micro control unit U1 of the battery pack 1, and after electrification, the micro control unit U1 judges that the external recognition resistor RID is not connected at this time, so that the micro control unit U1 of the battery pack 1 automatically enters a sleep state and keeps the discharging power device Q2 to be turned off, thereby realizing the self-locking and electrifying protection function of the external switch. On the contrary, when the discharging device 2 is connected to the battery pack 1 first and then the external switch S1 is closed, the micro control unit U1 of the battery pack 1 is powered on to confirm that the external identification resistor RID is connected, and at this time, the micro control unit U1 opens the discharging power device Q2 to complete the normal power-on discharging function.
Referring to fig. 3, it is right that the logic of the power-on protection determination process of the present invention after the external switch self-locking is as follows:
1. before the discharging device 2 is connected to the battery pack 1, the external switch S1 is closed;
2. the discharging equipment 2 is gradually inserted into the battery pack 1, and the positive electrode and the negative electrode of the power supply are connected with the external identification resistor preferentially because the structural size of the plug-in piece of the power supply interface is larger than that of the plug-in piece of the resistor identification interface;
3. after the positive electrode and the negative electrode of the power supply are accessed, the front-end IC U2 is simulated to be electrified;
4. then the micro control unit U1 is powered on;
5. at this time, the external identification resistor RID is not connected, so that the micro control unit U1 after being powered on detects that the resistance value of the external identification resistor RID is abnormal;
6. the micro-control unit U1 keeps the discharge power device Q2 turned off immediately, thereby entering a protection state;
7. the micro control unit U1 automatically enters a sleep state without output;
8. the micro control unit U1 judges whether the external switch S1 in the discharging device 2 is disconnected or not by sensing whether the power supply cathode output end B-of the battery pack 1 is low or not;
9. if the micro control unit U1 determines that the external switch S1 is not turned off, the micro control unit U1 is still in the sleep state without output; if the micro control unit U1 judges that the external switch S1 is disconnected, the micro control unit U1 controls the analog front end IC U2 to be powered off;
10. finally, the micro control unit U1 is self powered down.
It should be noted that the external identification resistor RID is only detected at power-on, and after entering the protection state, the power-off requirement of the analog front-end IC U2 meets two conditions that the micro control unit U1 has no output and the external switch S1 is disconnected.
From the above description, the utility model discloses can provide the power-on protection when external load switch closes earlier and inserts the positive negative pole of power again, also can provide the power-on protection when the battery inserts the electric apparatus of non-discernment to satisfy the power consumption safety demand of the high-power product of direct current, improved the power consumption security greatly, can avoid causing the potential safety hazard, prolonged the life of equipment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a protection controller on external switch auto-lock back direct current which characterized in that: the device comprises a discharge loop access monitoring circuit, an identification resistance access monitoring circuit, a discharge protection execution circuit and a micro control unit (U1);
the monitoring circuit connected to the discharging loop is composed of an external discharging equipment load (M), an external switch (S1) and an analog front-end IC (U2), wherein the external discharging equipment load (M) and the external switch (S1) are located in the discharging equipment (2), and the analog front-end IC (U2) is located in the battery pack (1);
the identification resistor access monitoring circuit is composed of an external identification Resistor (RID), a first resistor (R1), a second resistor (R2), a third resistor (R3) and a first transistor (Q1), wherein the external identification Resistor (RID) is located in a discharging device (2), and the first resistor (R1), the second resistor (R2), the third resistor (R3) and the first transistor (Q1) are located in a battery pack (1);
the discharge protection execution circuit is composed of a fourth resistor (R4), a fifth resistor (R5) and a discharge power device (Q2), wherein the fourth resistor (R4), the fifth resistor (R5) and the discharge power device (Q2) are all located in a battery pack (1);
the external discharging equipment load (M) and the external switch (S1) are connected in series between a power input end anode (P +) and an electrical input end cathode (P-) of the discharging equipment (2), an LDO power output end (U2-1) of the analog front end IC (U2) is connected with a power output end anode (B +) of the battery pack (1), a load access detection end (U2-2) of the analog front end IC (U2) is connected with the power output end cathode (B-) of the battery pack (1), the power input end anode (P +) of the discharging equipment (2) is connected with the power output end anode (B +) of the battery pack (1), the electrical input end cathode (P-) of the discharging equipment (2) is connected with the power output end cathode (B-) of the battery pack (1), and the LDO power input end (U2-3) of the analog front end IC (U2) is connected with a chip power supply (VCC) The MCU power-down control input end (U2-4) of the analog front-end IC (U2) is connected with the MCU power-down control output end (U1-1) of the micro control unit (U1), and the MCU power supply input end (U1-2) of the micro control unit (U1) is connected with a chip power supply (VCC);
the first resistor (R1) is connected between a chip power supply (VCC) and the base of the first transistor (Q1), the second resistor (R2) is connected between the low power consumption detection end (U1-3) of the micro control unit (U1) and the base of the first transistor (Q1), the emitter of the first transistor (Q1) is connected with the chip power supply (VCC), the two ends of the external identification Resistor (RID) are respectively connected with the third identification resistor detection end (ID 3) and the fourth identification resistor detection end (ID 4) of the discharge device (2), the collector of the first transistor (Q1) is connected with the second identification resistor detection end (ID 2) of the battery pack (1), the external identification resistor of the micro control unit (U1) is connected with the detection end (U1-4) and the first identification resistor detection end (ID 1) of the battery pack (1), the third resistor (R3) is connected between an external identification resistor access detection terminal (U1-4) of the micro control unit (U1) and the Ground (GND), a first identification resistor detection terminal (ID 1) of the battery pack (1) is in butt joint with a third identification resistor detection terminal (ID 3) of the discharge device (2), and a second identification resistor detection terminal (ID 2) of the battery pack (1) is in butt joint with a fourth identification resistor detection terminal (ID 4) of the discharge device (2);
the fourth resistor (R4) is connected between the grid of the discharge power device (Q2) and a discharge protection control terminal (U1-5) of the micro-control unit (U1), the fifth resistor (R5) is connected between the grid of the discharge power device (Q2) and the source of the discharge power device (Q2), the drain of the discharge power device (Q2) is connected with the negative pole (B-) of the power output terminal of the battery pack (1), and the source of the discharge power device (Q2) is connected with the Ground (GND).
2. The external switch self-locking back direct current power-on protection controller according to claim 1, characterized in that: the discharging device (2) comprises a diode (D1) connected with the external discharging device load (M) in parallel, the anode of the diode (D1) is connected with the anode (P +) of the power input end of the discharging device (2), and the cathode of the diode (D1) is connected with the cathode (P-) of the power input end of the discharging device (2).
3. The external switch self-locking back direct current power-on protection controller according to claim 1, characterized in that: the battery pack (1) with discharging equipment (2) connect the socket joint in-process, the power output end positive pole (B +) and power negative output (B-) of battery pack (1) respectively with the power input end positive pole (P +) and the electricity input end negative pole (P-) of discharging equipment (2) connect socket joint earlier, the first discernment resistance sense terminal (ID 1) and the second discernment resistance sense terminal (ID 2) of battery pack (1) respectively with the third discernment resistance sense terminal (ID 3) and the fourth discernment resistance sense terminal (ID 4) of discharging equipment (2) connect socket joint afterwards.
4. The external switch self-locking back direct current power-on protection controller according to claim 3, characterized in that: the battery pack is characterized in that a power output end positive electrode (B +) and a power negative output end (B-) of the battery pack (1) and a first identification resistance detection end (ID 1) and a second identification resistance detection end (ID 2) of the battery pack (1) are all provided with a male insertion piece to be led out from a shell of the battery pack (1), a power input end positive electrode (P +) and an electric input end negative electrode (P-) of the discharging equipment (2) and a third identification resistance detection end (ID 3) and a fourth identification resistance detection end (ID 4) of the discharging equipment (2) are all provided with a female insertion piece to be led out from the shell of the discharging equipment (2).
5. The external switch self-locking back direct current power-on protection controller according to claim 4, characterized in that: the battery pack (1) is characterized in that a power output end positive electrode (B +) and a power negative output end (B-) both adopt a long male plug-in sheet (A1), a first identification resistance detection end (ID 1) and a second identification resistance detection end (ID 2) of the battery pack (1) both adopt a short male plug-in sheet (B1), the structural size of the long male plug-in sheet (A1) is longer than that of the short male plug-in sheet (B1), a power input end positive electrode (P +) and an electrical input end negative electrode (P-) of the discharging device (2) both adopt a long female plug-in sheet (A2), a third identification resistance detection end (ID 3) and a fourth identification resistance detection end (ID 4) of the discharging device (2) both adopt a short female plug-in sheet (B2), the structural size of the long female plug-in sheet (A2) is longer than that of the short female plug-in sheet (B2), and the long female plug-in sheet (A2) and the long male plug-in sheet (A1) correspond in structure size, the short female insertion sheet (B2) corresponds to the structure size of the short male insertion sheet (B1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120289273.8U CN214590606U (en) | 2021-02-02 | 2021-02-02 | Direct current power-on protection controller after external switch self-locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120289273.8U CN214590606U (en) | 2021-02-02 | 2021-02-02 | Direct current power-on protection controller after external switch self-locking |
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| Publication Number | Publication Date |
|---|---|
| CN214590606U true CN214590606U (en) | 2021-11-02 |
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|---|---|---|---|
| CN202120289273.8U Active CN214590606U (en) | 2021-02-02 | 2021-02-02 | Direct current power-on protection controller after external switch self-locking |
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| Country | Link |
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| CN (1) | CN214590606U (en) |
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2021
- 2021-02-02 CN CN202120289273.8U patent/CN214590606U/en active Active
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