CN211428937U - Electronic cigarette battery pack and electronic cigarette - Google Patents
Electronic cigarette battery pack and electronic cigarette Download PDFInfo
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- CN211428937U CN211428937U CN201922208902.5U CN201922208902U CN211428937U CN 211428937 U CN211428937 U CN 211428937U CN 201922208902 U CN201922208902 U CN 201922208902U CN 211428937 U CN211428937 U CN 211428937U
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Abstract
The utility model discloses an electron cigarette battery pack and electron cigarette, the first current signal of current detection circuit detection first current detection end and the second current signal that detects second current detection end, control circuit when first current signal is greater than the second current signal, and control circuit exports first control signal control discharge switch circuit and closes, and control circuit exports second control signal control charge switch circuit simultaneously and switches on to charge to the battery. When the first current signal is smaller than the second current signal, a third control signal is output to control the charging switch circuit to be turned off, and meanwhile, the control circuit outputs a second control signal to control the discharging switch circuit to be turned on so as to provide working power for the electrical appliance through the discharging interface. The utility model provides an electron cigarette battery package need pass through the technical problem that the electron cigarette host computer charges among the prior art.
Description
Technical Field
The utility model relates to an electron cigarette technical field, in particular to electron cigarette battery pack and electron cigarette.
Background
At present, the normal working power of the electronic cigarette on the market is higher, but the electronic cigarette only needs to be used as a substitute of a cigarette and has the performances of portability, lightness and the like, so that the body type of the electronic cigarette is limited, a storage battery in the electronic cigarette cannot reserve a larger space for installing the battery, the battery capacity is lower, and the long-time cruising cannot be realized. And the electronic cigarette charging time is relatively long, and the user experience is limited. At present, batteries are charged after being installed in an electronic cigarette host, and the user experience can be seriously influenced by charging and smoking at the stage.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electron cigarette battery package aims at solving the problem that electron cigarette battery package needs just can charge through the electron cigarette host computer.
In order to achieve the above object, the utility model provides an electronic cigarette battery pack, electronic cigarette battery pack includes battery, power input/output end, current detection circuit, first afterflow circuit, second afterflow circuit, discharge switch circuit, charge switch circuit and control circuit, current detection circuit includes input, first output and second output, control circuit includes first current detection end, second current detection end, first control signal output and second control signal output, current detection circuit's input is connected with the negative pole of battery, current detection circuit's first output with control circuit's first current detection end is connected, current detection circuit's second output with control circuit's second current detection end is connected; the first input and output end of the discharge switch circuit, the input end of the first follow current circuit and the input and output end of the power supply are interconnected, the second input and output end of the discharge switch circuit, the output end of the first follow current circuit, the output end of the second follow current circuit and the first input and output end of the charge switch circuit are interconnected, and the controlled end of the discharge switch circuit is connected with the first control signal output end of the control circuit; the second input and output end of the charging switch circuit, the input end of the second follow current circuit and the anode of the storage battery are interconnected, and the controlled end of the charging switch circuit is connected with the second control signal output end of the control circuit;
the current detection circuit is used for detecting a first current signal of the first current detection end and detecting a second current signal of the second current detection end;
the control circuit is used for comparing the first current signal with the second current signal, when the first current signal is greater than the second current signal, the control circuit outputs a first control signal to control the discharge switch circuit to be closed, and simultaneously outputs a second control signal to control the charging switch circuit to be switched on so as to charge the storage battery;
when the first current signal is smaller than the second current signal, a third control signal is output to control the charging switch circuit to be turned off, and meanwhile, the control circuit outputs a fourth control signal to control the discharging switch circuit to be turned on, so that a working power supply is provided for an electrical appliance through the discharging interface.
Optionally, the electronic cigarette battery pack further includes a temperature detection circuit, the control circuit further includes a third detection end, an output end of the temperature detection circuit is connected with the third detection end of the control circuit, and the temperature detection circuit is configured to detect the temperature of the electronic cigarette battery pack;
the control circuit is further used for outputting a control signal to close the charging switch circuit or the discharging switch circuit when the detected temperature is higher than a preset temperature value.
Optionally, the electronic cigarette battery pack further includes a voltage detection circuit, the voltage detection circuit includes a first input end, a second input end, a first output end and a second output end, the control circuit further includes a fourth detection end and a fifth detection end, the first input end of the voltage detection circuit is connected with the positive electrode of the storage battery, the second input end of the voltage detection circuit is connected with the negative electrode of the storage battery, the first output end of the voltage detection circuit is connected with the fourth detection end of the control circuit, and the second output end of the voltage detection circuit is connected with the fifth detection end of the control circuit;
the voltage detection circuit is used for detecting the voltage value of the electronic cigarette battery pack;
the control circuit is also used for outputting a control signal to close the charging switch circuit when the voltage value of the electronic cigarette battery pack is higher than an overvoltage protection threshold value;
and when the voltage value of the electronic cigarette battery pack is lower than the undervoltage protection threshold value, outputting a control signal to close the discharge switch circuit.
Optionally, the control circuit includes a first chip, a first resistor, a second resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first diode, a second diode, a fourth diode, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first communication terminal and a second communication terminal, the first chip includes a ground pin, a filtering pin, a first voltage sampling pin, a second voltage sampling pin, a temperature sampling pin, a first current sampling pin, a second current sampling pin, a first communication pin, a second communication pin, a charge-discharge sampling pin, a first control signal output pin and a second control signal output pin, the ground pin of the first chip is grounded, the filtering pin of the first chip is connected to the first terminal of the first capacitor, the first voltage sampling pin of the first chip is the fourth detection terminal of the control circuit, the second voltage sampling pin of the first chip is the fifth detection end of the control circuit, the temperature sampling pin of the first chip is the third detection end of the control circuit, the first communication pin of the first chip is connected with the first end of the first resistor, the second communication pin of the first chip is connected with the first end of the second resistor, the charging and discharging sampling pin of the first chip is connected with the first end of the third resistor, the first control signal output pin of the first chip is connected with the first end of the fourth resistor, the second control signal output pin of the first chip is connected with the first end of the fifth resistor, the first current sampling pin of the first chip, the first end of the second capacitor and the first end of the third capacitor are interconnected, the connection node of the first control signal output pin is the first detection end of the control circuit, the second current sampling pin of the first chip, the first communication pin of the second capacitor and the first end of the third capacitor are interconnected, and the connection node of the first detection end of the control circuit is the second detection end of the first chip, A first end of the fourth capacitor and a second end of the third capacitor are interconnected, and a connection node of the fourth capacitor and the second end of the third capacitor is a second detection end of the control circuit; the second end of the first capacitor is grounded, and the second end of the first resistor, the first end of the sixth resistor and the cathode of the first diode are interconnected; a second end of the sixth resistor is a first communication end of the control circuit, and an anode of the first diode is grounded; a second end of the second resistor, a first end of the seventh resistor, and a cathode of the second diode are interconnected, the second end of the seventh resistor is a second communication end of the control circuit, an anode of the second diode is grounded, a second end of the third resistor is connected with a cathode of the third diode, an anode of the third diode is a sixth detection end of the control circuit, a second end of the fourth resistor is a first control signal output end of the control circuit, a second end of the fifth resistor is a first control signal output end of the control circuit, and an anode of the first diode is grounded; and second ends of the second capacitor and the fourth capacitor are grounded.
Optionally, the current detection circuit includes an eighth resistor, a ninth resistor, and a tenth resistor, a first end of the eighth resistor is a first output end of the current detection circuit, and a second end of the eighth resistor and a first end of the ninth resistor are both grounded; the first end of the tenth resistor is the second output end of the current detection circuit, the second end of the tenth resistor is connected with the second end of the ninth resistor, and the connection node of the tenth resistor is the input end of the current detection circuit.
Optionally, the temperature detection circuit includes an eleventh resistor, a first end of the eleventh resistor is an output end of the temperature detection circuit, and a second end of the eleventh resistor is grounded.
Optionally, the first freewheel circuit includes a fourth diode, an anode of the fourth diode is an input end of the first freewheel circuit, and a cathode of the fourth diode is an output end of the first freewheel circuit;
and/or the presence of a gas in the gas,
the discharge switch circuit comprises a twelfth resistor, a thirteenth resistor, a first switch tube and a second switch tube, wherein the first end of the twelfth resistor, the source electrode of the first switch tube and the source electrode of the second switch tube are interconnected, the connection node of the twelfth resistor, the source electrode of the first switch tube and the source electrode of the second switch tube is the first input/output end of the discharge switch circuit, the second end of the twelfth resistor, the drain electrode of the first switch tube and the grid electrode of the second switch tube are interconnected, and the connection node of the twelfth resistor, the drain electrode of the first switch tube and the grid electrode of the second switch tube is the controlled end of the discharge switch; the first end of the thirteenth resistor is connected with the grid electrode of the first switching tube, and the second end of the thirteenth resistor is grounded; and the drain electrode of the second switching tube is a second input/output end of the discharge switching circuit.
Optionally, the second flywheel circuit comprises a fifth diode, an anode of the fifth diode is an input end of the second flywheel circuit, and a cathode of the fifth diode is an output end of the second flywheel circuit;
and/or the presence of a gas in the gas,
the charging switch circuit comprises a third switch tube, a fourteenth resistor and a fifth diode, wherein the drain electrode of the third switch tube is a first input/output end of the charging switch circuit, the source electrode of the third switch tube is interconnected with the first end of the fourteenth resistor, the connection node of the third switch tube is a second input/output end of the charging switch circuit, the grid electrode of the third switch tube is connected with the second end of the fourteenth resistor, and the connection node of the third switch tube is a controlled end of the charging switch circuit.
Optionally, the electronic cigarette battery pack further comprises an input interface and an input/output interface.
Optionally, the first freewheel circuit includes a fourth diode, an anode of the fourth diode is an input end of the first freewheel circuit, and a cathode of the fourth diode is an output end of the first freewheel circuit; the discharge switch circuit comprises a twelfth resistor, a thirteenth resistor, a first switch tube and a second switch tube, wherein the first end of the twelfth resistor, the source electrode of the first switch tube and the source electrode of the second switch tube are interconnected, the connection node of the twelfth resistor, the source electrode of the first switch tube and the source electrode of the second switch tube is the first input/output end of the discharge switch circuit, the second end of the twelfth resistor, the drain electrode of the first switch tube and the grid electrode of the second switch tube are interconnected, and the connection node of the twelfth resistor, the drain electrode of the first switch tube and the grid electrode of the second switch tube is the controlled end of the discharge switch; the first end of the thirteenth resistor is connected with the grid electrode of the first switching tube, and the second end of the thirteenth resistor is grounded; the drain of the second switching tube is a second input/output end of the discharge switching circuit, wherein the fourth diode is a freewheeling diode of the second switching tube;
and/or the presence of a gas in the gas,
the second freewheeling circuit comprises a fifth diode, the anode of the fifth diode is the input end of the second freewheeling circuit, and the cathode of the fifth diode is the output end of the second freewheeling circuit;
the charging switch circuit comprises a third switching tube, a fourteenth resistor and a fifth diode, wherein the drain electrode of the third switching tube is a first input/output end of the charging switch circuit, the source electrode of the third switching tube and the first end of the fourteenth resistor are interconnected, the connection node of the third switching tube is a second input/output end of the charging switch circuit, the grid electrode of the third switching tube is connected with the second end of the fourteenth resistor, and the connection node of the third switching tube is a controlled end of the charging switch circuit; and the fifth diode is a freewheeling diode of the third switching tube.
For realizing the above object, the utility model discloses still provide an electronic cigarette, reach as above including the electronic cigarette main part electronic cigarette battery package, the electronic cigarette main part with the connection can be dismantled to the electronic cigarette battery package, the electronic cigarette main part includes microprocessor, microprocessor includes first communication foot, second communication foot and power foot, the electronic cigarette battery package is including discharging interface, first communication end and second communication end, the discharging interface of electronic cigarette battery package with microprocessor's power foot is connected, the first communication end of electronic cigarette battery package with microprocessor's first communication foot is connected, the second communication end of electronic cigarette battery package with microprocessor's second communication foot is connected
The utility model discloses a set up battery, power input/output end, current detection circuit, first afterflow circuit, second afterflow circuit, discharge switch circuit, charge switch circuit and control circuit in electron cigarette battery package, wherein, current detection circuit detects the first current signal of first current detection end and the second current signal of second current detection end, control circuit are greater than at first current signal during the second current signal, export first control signal control discharge switch circuit closes, and control circuit exports second control signal control simultaneously charge switch circuit switches on, and is right the battery charges. The control circuit compares the first current signal with the second current signal, and when the first current signal is smaller than the second current signal, outputs a third control signal to control the charging switch circuit to be closed, and simultaneously outputs a fourth control signal to control the discharging switch circuit to be switched on, so as to provide a working power supply for the electrical appliance through the discharging interface. At the moment, the electronic cigarette battery pack can independently realize the charge and discharge function through the input and output ends of the power supply, so that the problem that the electronic cigarette battery pack can be charged only through the electronic cigarette host is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of the battery pack of the electronic cigarette of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention, and if there is a description related to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is only used for descriptive purposes and is not to be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The utility model provides an electron cigarette battery package for solve among the prior art electron cigarette battery package and need just can charge through electron cigarette host computer technical problem.
In an embodiment of the present invention, as shown in fig. 1, the present invention provides an electronic cigarette battery including a battery 10, a power input/output terminal PACK, a current detection circuit 20, a first follow current circuit 30, a second follow current circuit 40, a discharge switch circuit 50, a charge switch circuit 60, and a control circuit 70.
In this embodiment, the current detection circuit 20 includes an input terminal, a first output terminal and a second output terminal, the control circuit 70 includes a first current detection terminal, a second current detection terminal, a first control signal output terminal and a second control signal output terminal, the input terminal of the current detection circuit 20 is connected to the negative electrode of the battery 10, the first output terminal of the current detection circuit 20 is connected to the first current detection terminal of the control circuit 70, and the second output terminal of the current detection circuit 20 is connected to the second current detection terminal of the control circuit 70. The first input and output ends of the discharge switch circuit 50, the input end of the first follow current circuit 30 and the power input and output end PACK are interconnected, the second input and output ends of the discharge switch circuit 50, the output end of the first follow current circuit 30, the output end of the second follow current circuit 40 and the first input and output end of the charge switch circuit 60 are interconnected, and the controlled end of the discharge switch circuit 50 is connected with the first control signal output end of the control circuit 70. A second input/output terminal of the charging switch circuit 60, an input terminal of the second freewheel circuit 40, and the anode of the secondary battery 10 are interconnected, and a controlled terminal of the charging switch circuit 60 is connected to a second control signal output terminal of the control circuit 70.
The current detection circuit 20 detects a first current signal at a first current detection end and detects a second current signal at a second current detection end, the control circuit compares the first current signal with the second current signal, when the first current signal is greater than the second current signal, the storage battery 10 is in a charging state, the control circuit outputs a first control signal to control the discharge switch circuit 50 to be turned off, and simultaneously the control circuit outputs a second control signal to control the charge switch circuit 60 to be turned on, so as to charge the storage battery 10. When the first current signal is smaller than the second current signal, the battery 10 is in a discharging state, the third control signal is output to control the charging switch circuit 60 to be turned off, and the fourth control signal is output by the control circuit to control the discharging switch circuit 50 to be turned on, so as to provide working power for the electrical appliance through the discharging interface. Thereby electron cigarette battery package can realize the charge-discharge function alone through power input output PACK, can also break away from the electron cigarette host computer and charge alone, can realize the purpose of continuation of the journey through the electron cigarette battery package of more renewing when the user needs, and in addition, the electron cigarette battery package that the replacement got off can charge alone, does not influence the use of electron cigarette. The utility model discloses solve the technical problem that electron cigarette battery package needs can charge through the electron cigarette host computer with this.
Optionally, the electronic cigarette battery pack further includes a temperature detection circuit 80, the control circuit 70 further includes a third detection end, and an output end of the temperature detection circuit 80 is connected to the third detection end of the control circuit 70.
The temperature detection circuit 80 detects the temperature of the battery pack of the electronic cigarette, and the control circuit 70 outputs a control signal to turn off the charging switch circuit 60 or the discharging switch circuit 50 when the detected temperature is greater than a preset temperature value. Thereby realizing the over-temperature protection of the battery pack. It is also possible to output the first control signal to turn off the discharge switch circuit 50 or output the third control signal to turn off the charge switch circuit 60 when the temperature is lower than the preset temperature value. Thereby, low-temperature protection of the battery pack can be realized.
Optionally, the electronic cigarette pack further includes a voltage detection circuit 90, the voltage detection circuit 90 includes a first input end, a second input end, a first output end and a second output end, the control circuit 70 further includes a fourth detection end and a fifth detection end, the first input end of the voltage detection circuit 90 is connected with the positive pole of the storage battery 10, the second input end of the voltage detection circuit 90 is connected with the negative pole of the storage battery 10, the first output end of the voltage detection circuit 90 is connected with the fourth detection end of the control circuit 70, and the second output end of the voltage detection circuit 90 is connected with the fifth detection end of the control circuit 70.
The voltage detection circuit 90 detects a voltage value of the electronic cigarette battery pack, and the control circuit 70 outputs a third control signal to turn off the charging switch circuit 60 when the detected voltage value of the electronic cigarette battery pack is higher than the overvoltage protection threshold. The voltage value of the electronic cigarette battery pack at this time is the terminal voltage of two ends of the battery (V1+ V2), the overvoltage protection threshold value is generally set to the normal operating voltage of the storage battery 10, the specific value is determined according to the size of the actual storage battery 10, the control signal can be generally set to a high-low level signal, the charging switch circuit 60 or the discharging switch circuit 50 is switched according to the control signal, when the electronic cigarette battery pack is in a charging state, the discharging switch circuit 50 is turned off at this time, if the voltage value of the electronic cigarette battery pack is detected to be greater than a first preset voltage value, the charging switch circuit 60 is turned off, therefore, a path between the charging switch circuit 60 and the discharging switch circuit 50 is disconnected, so as to implement overvoltage protection on the electronic cigarette battery pack, avoid overcharging to damage the storage battery 10, and shorten the service life of the electronic cigarette battery pack. In addition, when it is detected that the voltage value of the electronic cigarette battery pack is lower than the undervoltage protection threshold, the first control signal may be output to turn off the discharge switch circuit 50. The second preset voltage value is an undervoltage critical value of the battery 10, and when the voltage value of the battery 10 is lower than the voltage value, the battery 10 is in an undervoltage state. The charging switch circuit 60 or the discharging switch circuit 50 is switched on and off according to the control signal, when the electronic cigarette battery pack is in a discharging state, the charging switch circuit 60 is turned off at the moment, and if the voltage value is detected to be smaller than the second voltage preset value, the discharging switch circuit 50 is turned off, so that the path between the charging switch circuit 60 and the discharging switch circuit 50 is disconnected, the electronic cigarette battery pack is subjected to under-voltage protection, the storage battery 10 is prevented from being damaged due to under-voltage discharging, and the service life of the electronic cigarette battery pack is shortened.
Optionally, the control circuit 70 includes a first chip U1, a first resistor R1, a second resistor R2, a fourth resistor, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first diode D1, a second diode D2, a fourth diode D4, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first communication terminal SCL and a second communication terminal SDA, the first chip U1 includes a ground pin PWPD, a filter pin PBI, a first voltage sampling pin VC1, a second voltage sampling pin VC2, a temperature sampling pin TS1, a first current sampling pin SRN, a second current sampling pin SRP, a first communication pin SDA, a second communication pin SDA, a charge and discharge sampling pin k, a first control signal output pin CHG and a second control signal output pin DSG, a first end of the first chip PBI 4642 is connected to the ground pin pwi of the first chip 1, a first voltage sampling pin VC1 of the first chip U1 is a fourth detection terminal of the control circuit 70, a second voltage sampling pin VC2 of the first chip U1 is a fifth detection terminal of the control circuit 70, a temperature sampling pin TS1 of the first chip U1 is a third detection terminal of the control circuit 70, a first communication pin SCL of the first chip U1 is connected to a first terminal of a first resistor R1, a second communication pin SDA of the first chip U1 is connected to a first terminal of a second resistor R2, a charge and discharge sampling pin PACK of the first chip U1 is connected to a first terminal of a third resistor, a first control signal output pin CHG of the first chip U1 is connected to a first terminal of a fourth resistor, a second control signal output pin DSG of the first chip U1 is connected to a first terminal of a fifth resistor R5, a first current sampling pin SRN of the first chip U1, a first terminal of a second capacitor C2 and a first capacitor C3 are interconnected control nodes 3, the second current sampling pin SRP of the first chip U1, the first terminal of the fourth capacitor C4, and the second terminal of the third capacitor C3 are interconnected, and the connection node thereof is the second detection terminal of the control circuit 70; the second terminal of the first capacitor C1 is grounded, and the second terminal of the first resistor R1, the first terminal of the sixth resistor R6, and the cathode of the first diode D1 are interconnected. The second terminal of the sixth resistor R6 is the first communication terminal SCL of the control circuit 70, and the anode of the first diode D1 is grounded. The second end of the second resistor R2, the first end of the seventh resistor R7, and the cathode of the second diode D2 are interconnected, the second end of the seventh resistor R7 is the second communication end SDA of the control circuit 70, the anode of the second diode D2 is grounded, the second end of the third resistor is connected to the cathode of the third diode, the anode of the third diode is the sixth detection end of the control circuit 70, the second end of the fourth resistor is the first control signal output end of the control circuit 70, the second end of the fifth resistor R5 is the first control signal output end of the control circuit 70, and the anode of the first diode D1 is grounded. The second terminals of the second capacitor C2 and the fourth capacitor C4 are grounded.
The first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 play a role in voltage stabilization and filtering, the first chip U1 acquires a first current signal through the first current sampling pin SRN, the second current sampling pin SRP acquires a second current signal, when the first current signal is greater than the second current signal, the battery 10 is in a charging state, the first control signal output pin CHG of the first chip U1 outputs a first control signal to control the discharge switch circuit 50 to be turned off, and the second control signal output pin DSG of the first chip U1 outputs a second control signal to control the charge switch circuit 60 to be turned on, so as to charge the battery 10. When the first current signal is smaller than the second current signal, the battery 10 is in a discharging state, the first control signal output pin CHG of the first chip U1 outputs a third control signal to control the charging switch circuit 60 to turn off, and the second control signal output pin DSG of the first chip U1 outputs a fourth control signal to control the discharging switch circuit 50 to turn on, so as to provide a working power supply for the electrical appliance through the discharging interface. Thereby electron cigarette battery package can realize the charge-discharge function alone through power input output PACK, can also break away from the electron cigarette host computer and charge alone, can realize the purpose of continuation of the journey through the electron cigarette battery package of more renewal when the user needs, and the electron cigarette battery package that gets off of changing can charge alone, does not influence the use of electron cigarette. This use is novel to solve the electron cigarette battery package with this and need just can charge technical problem through electron cigarette host computer. Further, the first voltage sampling pin VC1 of the first chip U1 detects a first voltage value of the battery 10, the second voltage sampling pin VC2 of the first chip U1 detects a second voltage value of the battery 10, and when the first voltage value or the second voltage value is greater than the first voltage preset value, a third control signal is output to turn off the charging switch circuit 60. When the detected first voltage value or the detected second voltage value is smaller than the second voltage preset value, a first control signal is output to close the discharge switch circuit 50, so that overvoltage and undervoltage protection is realized. In addition, the temperature sampling pin TS1 of the first chip U1 collects temperature information of the electronic cigarette battery pack, and outputs a control signal to control the on/off of the charging switch circuit 60 and the discharging switch circuit 50 according to the temperature information. After installing to the electron cigarette host computer, can also communicate with the electron cigarette host computer through first communication foot SCL, second communication foot SDA of first chip U1 to conveniently look over the surplus parameter information such as electric quantity of electron cigarette battery package.
Optionally, the current detection circuit 20 includes an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10, a first end of the eighth resistor R8 is a first output end of the current detection circuit 20, and a second end of the eighth resistor R8 and a first end of the ninth resistor R9 are both grounded. A first terminal of the tenth resistor R10 is a second output terminal of the current detection circuit 20, a second terminal of the tenth resistor R10 is connected to a second terminal of the ninth resistor R9, and a connection node thereof is an input terminal of the current detection circuit 20.
Optionally, the temperature detecting circuit 80 includes an eleventh resistor, a first end of the eleventh resistor is an output end of the temperature detecting circuit 80, and a second end of the eleventh resistor is grounded.
Wherein, the eleventh resistor is a temperature sensitive resistor.
Optionally, the first freewheel circuit 30 includes a fourth diode D4, an anode of the fourth diode D4 being an input of the first freewheel circuit 30, and a cathode of the fourth diode D4 being an output of the first freewheel circuit 30.
The fourth diode D4 has a unidirectional conduction function, and a current can flow only from the anode to the cathode of the fourth diode D4. Thereby realizing the function of unidirectional follow current.
Optionally, the discharge switch circuit 50 includes a twelfth resistor R12, a thirteenth resistor R13, a first switch Q1, and a second switch Q2, where a first end of the twelfth resistor R12, a source of the first switch Q1, and a source of the second switch Q2 are interconnected, a connection node thereof is a first input/output end of the discharge switch circuit 50, a second end of the twelfth resistor R12, a drain of the first switch Q1, and a gate of the second switch Q2 are interconnected, and a connection node thereof is a controlled end of the discharge switch circuit 50. A first end of the thirteenth resistor R13 is connected to the gate of the first switch Q1, and a second end of the thirteenth resistor R13 is grounded. The drain of the second switch Q2 is a second input/output terminal of the discharging switch circuit 50.
When the gate of the second switch Q2 is the fourth control signal, the second switch Q2 is turned on, and the current flows to the drain through the source. When the gate of the second switch Q2 is the first control signal, the second switch Q2 is turned off, and no current flows through the discharge switch circuit 50.
Optionally, the second freewheel circuit 40 comprises a fifth diode, an anode of the fifth diode being the input terminal of the second freewheel circuit 40, and a cathode of the fifth diode being the output terminal of the second freewheel circuit 40.
The fifth diode D5 has a unidirectional conduction function, and a current can flow only from the anode to the cathode of the fifth diode D5. Thereby realizing the function of unidirectional follow current.
Optionally, the charging switch circuit 60 includes a third switch tube, a fourteenth resistor and a fifth diode D5, a drain of the third switch tube is the first input/output terminal of the charging switch circuit 60, a source of the third switch tube and a first terminal of the fourteenth resistor are interconnected, a connection node thereof is the second input/output terminal of the charging switch circuit 60, a gate of the third switch tube is connected to a second terminal of the fourteenth resistor, and a connection node thereof is the controlled terminal of the charging switch circuit 60.
When the grid of the third switching tube is the second control signal, the third switching tube is conducted, and the current flows to the drain electrode through the source electrode. When the gate of the second switch Q2 is the third control signal, the second switch Q2 is turned off, and no current flows through the discharge switch circuit 50.
Optionally, the electronic cigarette battery pack further comprises an input interface and an input-output interface.
The input interface may be a charging interface such as a USB interface.
The input and output interface is connected with the electronic cigarette host and can be a contact, and charging can be carried out and a working power supply can be provided for the electronic cigarette host through the input and output interface.
Optionally, the fifteenth resistor R15, the sixteenth resistor R16 and the fifth capacitor have a filtering function for the sixth capacitor and the sixth capacitor of the voltage detection circuit.
The principle of the present invention is explained with reference to fig. 1:
the first current sampling pin SRN of the first chip U1 is used for collecting the first current signal SRN, the second current sampling pin SRP of the first chip U1 is used for collecting the first current signal SRN, when the first current signal is greater than the second current signal, the battery 10 is in a charging state, the first control signal output pin CHG of the first chip U1 outputs a first control signal to control the second switch Q2 to be turned off, meanwhile, the second control signal output pin DSG of the first chip U1 outputs a second control signal to control the third switch Q2 to be turned on, and the fourth diode D4 and the third switch Q form a path to charge the battery 10. When the first current signal is smaller than the second current signal, the battery 10 is in a discharging state, the first control signal output pin CHG of the first chip U1 outputs a third control signal to control the third switching tube to be turned off, meanwhile, the second control signal output pin DSG of the first chip U1 outputs a fourth control signal to control the second switching tube Q2 to be turned on, and the fifth diode D5 and the second switching tube Q2 form a path to provide working power to the electrical appliance through the discharging interface. Therefore, the battery can be charged without passing through the electronic cigarette host. In addition, the overcurrent protection can be performed on the electronic cigarette battery pack through the current collected by the first current sampling pin SRN and the second current sampling pin SRP. The first communication pin SCL and the second communication pin SDA of the first chip U1 are communicated with the electronic cigarette host to realize the detection of the state of the battery pack. The voltage of the storage battery 10 detected by the first voltage sampling pin VC1 and the second voltage sampling pin VC2 can be used for performing overvoltage and undervoltage protection on the battery pack. In addition, overtemperature and low-temperature protection is realized through the temperature detected by the temperature sampling pin TS 1.
In order to realize above-mentioned purpose, the utility model discloses still provide an electronic cigarette, including the electronic cigarette main part and electron cigarette battery package as above, the electronic cigarette main part can be dismantled with the electronic cigarette battery package and be connected, the electronic cigarette main part includes microprocessor, microprocessor includes first communication foot SCL, second communication foot SDA and power foot, the electronic cigarette battery package is including the discharge interface, first communication end SCL and second communication end SDA, the discharge interface of electronic cigarette battery package is connected with microprocessor's power foot, the first communication end SCL of electronic cigarette battery package is connected with microprocessor's first communication foot SCL, the second communication end SDA of electronic cigarette battery package is connected with microprocessor's second communication foot SDA.
It is worth noting, because the utility model discloses the electron cigarette has contained the whole embodiments of above-mentioned electron cigarette battery package, consequently the utility model discloses the electron cigarette has all beneficial effects of above-mentioned electron cigarette battery package, and it is no longer repeated here.
Claims (10)
1. An electronic cigarette battery pack is characterized by comprising a storage battery, a power supply input/output end, a current detection circuit, a first follow current circuit, a second follow current circuit, a discharge switch circuit, a charge switch circuit and a control circuit, wherein the current detection circuit comprises an input end, a first output end and a second output end, the control circuit comprises a first current detection end, a second current detection end, a first control signal output end and a second control signal output end, the input end of the current detection circuit is connected with the negative electrode of the storage battery, the first output end of the current detection circuit is connected with the first current detection end of the control circuit, and the second output end of the current detection circuit is connected with the second current detection end of the control circuit; the first input and output end of the discharge switch circuit, the input end of the first follow current circuit and the input and output end of the power supply are interconnected, the second input and output end of the discharge switch circuit, the output end of the first follow current circuit, the output end of the second follow current circuit and the first input and output end of the charge switch circuit are interconnected, and the controlled end of the discharge switch circuit is connected with the first control signal output end of the control circuit; the second input and output end of the charging switch circuit, the input end of the second follow current circuit and the anode of the storage battery are interconnected, and the controlled end of the charging switch circuit is connected with the second control signal output end of the control circuit;
the current detection circuit is used for detecting a first current signal of the first current detection end and detecting a second current signal of the second current detection end;
the control circuit is used for comparing the first current signal with the second current signal, when the first current signal is greater than the second current signal, the control circuit outputs a first control signal to control the discharge switch circuit to be closed, and simultaneously outputs a second control signal to control the charging switch circuit to be switched on so as to charge the storage battery;
when the first current signal is smaller than the second current signal, a third control signal is output to control the charging switch circuit to be turned off, and meanwhile, the control circuit outputs a fourth control signal to control the discharging switch circuit to be turned on, so that a working power supply is provided for an electrical appliance through the power input and output end.
2. The electronic cigarette battery pack of claim 1, further comprising a temperature detection circuit, wherein the control circuit further comprises a third detection terminal, wherein an output terminal of the temperature detection circuit is connected to the third detection terminal of the control circuit,
the temperature detection circuit is used for detecting the temperature of the electronic cigarette battery pack;
the control circuit is further used for outputting a control signal to close the charging switch circuit or the discharging switch circuit when the detected temperature is higher than a preset temperature value.
3. The electronic cigarette pack of claim 2, further comprising a voltage detection circuit, the voltage detection circuit comprising a first input terminal, a second input terminal, a first output terminal and a second output terminal, the control circuit further comprising a fourth detection terminal and a fifth detection terminal, the first input terminal of the voltage detection circuit being connected to the positive electrode of the battery, the second input terminal of the voltage detection circuit being connected to the negative electrode of the battery, the first output terminal of the voltage detection circuit being connected to the fourth detection terminal of the control circuit, the second output terminal of the voltage detection circuit being connected to the fifth detection terminal of the control circuit;
the voltage detection circuit is used for detecting the voltage value of the electronic cigarette battery pack;
the control circuit is also used for outputting a control signal to close the charging switch circuit when the voltage value of the electronic cigarette battery pack is higher than the overvoltage protection threshold value;
and when the voltage value of the electronic cigarette battery pack is lower than the undervoltage protection threshold value, outputting a control signal to close the discharge switch circuit.
4. The electronic cigarette battery pack of claim 3, wherein the control circuit comprises a first chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first diode, a second diode, a third diode, a fourth diode, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first communication terminal and a second communication terminal, wherein the first chip comprises a ground pin, a filter pin, a first voltage sampling pin, a second voltage sampling pin, a temperature sampling pin, a first current sampling pin, a second current sampling pin, a first communication pin, a second communication pin, a charge and discharge sampling pin, a first control signal output pin and a second control signal output pin, wherein the ground pin of the first chip is grounded, and the filter pin of the first chip is connected to the first terminal of the first capacitor, the first voltage sampling pin of the first chip is the fourth detection end of the control circuit, the second voltage sampling pin of the first chip is the fifth detection end of the control circuit, the temperature sampling pin of the first chip is the third detection end of the control circuit, the first communication pin of the first chip is connected with the first end of the first resistor, the second communication pin of the first chip is connected with the first end of the second resistor, the charge-discharge sampling pin of the first chip is connected with the first end of the third resistor, the first control signal output pin of the first chip is connected with the first end of the fourth resistor, the second control signal output pin of the first chip is connected with the first end of the fifth resistor, the first current sampling pin of the first chip, the first end of the second capacitor and the first end of the third capacitor are interconnected, the connection node of the first chip is a first detection end of the control circuit, the second current sampling pin of the first chip, the first end of the fourth capacitor and the second end of the third capacitor are interconnected, and the connection node of the first chip is a second detection end of the control circuit; the second end of the first capacitor is grounded, and the second end of the first resistor, the first end of the sixth resistor and the cathode of the first diode are interconnected; a second end of the sixth resistor is a first communication end of the control circuit, and an anode of the first diode is grounded; a second end of the second resistor, a first end of the seventh resistor, and a cathode of the second diode are interconnected, the second end of the seventh resistor is a second communication end of the control circuit, an anode of the second diode is grounded, a second end of the third resistor is connected with a cathode of the third diode, an anode of the third diode is a sixth detection end of the control circuit, a second end of the fourth resistor is a first control signal output end of the control circuit, a second end of the fifth resistor is a first control signal output end of the control circuit, and an anode of the first diode is grounded; and second ends of the second capacitor and the fourth capacitor are grounded.
5. The electronic cigarette battery pack of claim 1, wherein the current detection circuit comprises an eighth resistor, a ninth resistor, and a tenth resistor, wherein a first end of the eighth resistor is a first output end of the current detection circuit, and a second end of the eighth resistor and a first end of the ninth resistor are both grounded; the first end of the tenth resistor is the second output end of the current detection circuit, the second end of the tenth resistor is connected with the second end of the ninth resistor, and the connection node of the tenth resistor is the input end of the current detection circuit.
6. The electronic cigarette battery pack of claim 2, wherein the temperature detection circuit comprises an eleventh resistor, a first terminal of the eleventh resistor is an output terminal of the temperature detection circuit, and a second terminal of the eleventh resistor is connected to ground.
7. The electronic cigarette battery pack of claim 1, wherein the first freewheeling circuit includes a fourth diode having an anode that is an input of the first freewheeling circuit and a cathode that is an output of the first freewheeling circuit;
and/or the presence of a gas in the gas,
the discharge switch circuit comprises a twelfth resistor, a thirteenth resistor, a first switch tube and a second switch tube, wherein the first end of the twelfth resistor, the source electrode of the first switch tube and the source electrode of the second switch tube are interconnected, the connection node of the twelfth resistor, the source electrode of the first switch tube and the source electrode of the second switch tube is the first input/output end of the discharge switch circuit, the second end of the twelfth resistor, the drain electrode of the first switch tube and the grid electrode of the second switch tube are interconnected, and the connection node of the twelfth resistor, the drain electrode of the first switch tube and the grid electrode of the second switch tube is the controlled end of the discharge switch; the first end of the thirteenth resistor is connected with the grid electrode of the first switching tube, and the second end of the thirteenth resistor is grounded; and the drain electrode of the second switching tube is a second input/output end of the discharge switching circuit.
8. The e-cig battery pack as recited in claim 1, wherein the second freewheeling circuit includes a fifth diode, an anode of the fifth diode being an input terminal of the second freewheeling circuit and a cathode of the fifth diode being an output terminal of the second freewheeling circuit;
and/or the presence of a gas in the gas,
the charging switch circuit comprises a third switch tube, a fourteenth resistor and a fifth diode, wherein the drain electrode of the third switch tube is a first input/output end of the charging switch circuit, the source electrode of the third switch tube is interconnected with the first end of the fourteenth resistor, the connection node of the third switch tube is a second input/output end of the charging switch circuit, the grid electrode of the third switch tube is connected with the second end of the fourteenth resistor, and the connection node of the third switch tube is a controlled end of the charging switch circuit.
9. The electronic cigarette battery pack of any one of claims 1-8, further comprising an input interface and an input-output interface, wherein the input interface and the input-output interface are respectively connected to the power input and output terminals.
10. An electronic cigarette, characterized in that, includes the electronic cigarette main part and according to any one of claims 1-9 the electronic cigarette battery package, the electronic cigarette main part with the connection can be dismantled to the electronic cigarette battery package, the electronic cigarette main part includes microprocessor, microprocessor includes first communication foot, second communication foot and power foot, the electronic cigarette battery package includes electrical discharge interface, first communication end and second communication end, the electrical discharge interface of electronic cigarette battery package with the power foot of microprocessor is connected, the first communication end of electronic cigarette battery package with the first communication foot of microprocessor is connected, the second communication end of electronic cigarette battery package with the second communication foot of microprocessor is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922208902.5U CN211428937U (en) | 2019-12-10 | 2019-12-10 | Electronic cigarette battery pack and electronic cigarette |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922208902.5U CN211428937U (en) | 2019-12-10 | 2019-12-10 | Electronic cigarette battery pack and electronic cigarette |
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| CN211428937U true CN211428937U (en) | 2020-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114190612A (en) * | 2021-09-29 | 2022-03-18 | 上海芯圣电子股份有限公司 | Electron cigarette chip with motor drive |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114190612A (en) * | 2021-09-29 | 2022-03-18 | 上海芯圣电子股份有限公司 | Electron cigarette chip with motor drive |
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