CN214380210U - Main charging device, auxiliary charging device, charging equipment and electric wheelchair - Google Patents
Main charging device, auxiliary charging device, charging equipment and electric wheelchair Download PDFInfo
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- CN214380210U CN214380210U CN202120205225.6U CN202120205225U CN214380210U CN 214380210 U CN214380210 U CN 214380210U CN 202120205225 U CN202120205225 U CN 202120205225U CN 214380210 U CN214380210 U CN 214380210U
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Abstract
The embodiment of the utility model discloses main charging device, from charging device, battery charging outfit and electronic wheelchair, the battery charging outfit disclosed in this application is at main charging device's the first main charging contact and the second main charging contact respectively with from charging device first from charging contact and second from charging contact when being connected, utilize main charging device's main signal transmission circuit and main signal demodulation circuit and from charging device's from signal transmission circuit and from signal demodulation circuit carry out the information interaction, with confirm main charging device and connect stable back from charging device, charge energy storage equipment through main charging device and follow charging device, effectively avoid having the heavy current to pass through in the twinkling of an eye at main charging device and from charging device contact, and then, the electric arc of avoiding the heavy current to produce can destroy connector surface oxidation resisting layer.
Description
Technical Field
The utility model relates to a power electronic technology field especially relates to a main charging device, follow charging device, battery charging outfit and electronic wheelchair car.
Background
In the existing charging process, a user is required to insert a charger input plug into a wall socket and then insert a charger output plug into a charging port to start charging the energy storage device. However, when the eyesight and the operation ability of the user are weak, the charging interface is prone to being inserted and loosened due to improper operation; moreover, when high voltage and high current are connected, electric arcs are always generated at the moment of contact, and the electric arcs can damage the anti-oxidation layer on the surface of the connector, so that the energy storage equipment cannot be normally charged.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model provides a main charging device, follow charging device, battery charging outfit and electronic wheelchair car.
The application provides a main charging device, which comprises a first main charging contact, a second main charging contact, a main signal transmitting circuit, a main signal demodulating circuit, a charging output control circuit and a first control module;
the first master charging contact is used for being connected with a first slave charging contact of a slave charging device, the second master charging contact is used for being connected with a second slave charging contact of the slave charging device, and the second master charging contact is grounded;
the signal receiving end of the main signal sending circuit is connected with the transmitting end of the first control module, the power supply access end of the main signal sending circuit is used for being connected with a power supply, and the power supply output end of the main signal sending circuit is connected with the power supply input end of the main signal demodulation circuit;
the power supply output end of the main signal demodulation circuit is respectively connected with the first main charging contact and the power supply output end of the charging output control circuit, and the signal output end of the main signal demodulation circuit is connected with the receiving end of the first control module;
the power supply input end of the charging output control circuit is used for being connected with the power supply, and the controlled end of the charging output control circuit is connected with the control end of the first control module;
the main signal transmitting circuit modulates the interactive signal transmitted by the transmitting end of the first control module on the first main charging contact;
when the first master charging contact and the first slave charging contact are in contact, and the second master charging contact and the second slave charging contact are in contact:
the interaction signal on the first master charging contact is sent to a slave signal demodulation circuit of the slave charging device, so that the slave signal demodulation circuit demodulates the interaction signal, and sends the demodulated interaction signal to a second control module of the slave charging device, so that a transmitting end of the second control module sends a feedback instruction, and the control end of the second control module sends a first conduction instruction to control a charging input control circuit of the slave charging device to be conducted, so that a slave signal sending circuit of the slave charging device modulates the feedback signal sent by the transmitting end of the second control module on the first slave charging contact;
after the main signal demodulation circuit acquires the feedback signal on the first slave charging contact, the main signal demodulation circuit demodulates the feedback signal and sends the demodulated feedback signal to the first control module, so that the control end of the first control module sends a second conduction instruction to control the conduction of the charging output control circuit.
According to the main charging device, the main signal sending circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a switching tube and a first triode;
one end of the first resistor is used as a signal receiving end of the main signal transmitting circuit;
the other end of the first resistor is respectively connected with one end of the second resistor and the first end of the first triode;
the second end of the first triode is connected with the other end of the second resistor and the ground respectively, the third end of the first triode is connected with one end of the third resistor, and the other end of the third resistor is connected with the first end of the switching tube and one end of the fourth resistor respectively;
the other end of the fourth resistor is respectively connected with the power supply access end of the main signal transmitting circuit and the second end of the switch tube;
and the third end of the switching tube is used as the power output end of the main signal transmitting circuit.
In the main charging device, the main signal demodulation circuit includes a protection element, a fifth resistor, a sixth resistor, a seventh resistor, a first optical coupler element, and a first diode;
a first end of the protection element is used as a power input end of the main signal demodulation circuit, and a second end of the protection element is respectively connected with one end of the fifth resistor and one end of the sixth resistor;
the other end of the sixth resistor is connected with the first end of the first optical coupling element;
a second end of the first optical coupler element is connected with the other end of the fifth resistor and an anode of the first diode respectively, a third end of the first optical coupler element is grounded, a fourth end of the first optical coupler element is connected with a signal sending end of the main signal demodulation circuit and one end of the seventh resistor respectively, and the other end of the seventh resistor is used for connecting a first power supply end;
and the cathode of the first diode is used as the power output end of the main signal demodulation circuit.
In the main charging device, the charging output control circuit comprises an eighth resistor, a ninth resistor, a tenth resistor, a first capacitor, a first switching element, a second diode and a second triode;
a first end of the second triode is respectively connected with one end of the eighth resistor and one end of the ninth resistor, the other end of the eighth resistor is used as a controlled end of the charging output control circuit, and a second end of the second triode is respectively connected with the other end of the ninth resistor and the ground;
a first end of the first switching element is respectively connected with a cathode of the second diode and a second power supply end, and a second end of the first switching element is respectively connected with an anode of the second diode and a third end of the second triode;
one end of the first capacitor is connected with a power supply input end of the charging output control circuit and a third end of the first switching element respectively, and the other end of the first capacitor is connected with one end of the tenth resistor;
the other end of the tenth resistor is connected to the power output end of the charging output control circuit and the fourth end of the first switching element respectively.
The application provides a slave charging device, which comprises a first slave charging contact, a second slave charging contact, a slave signal transmitting circuit, a slave signal demodulating circuit, a charging input control circuit and a second control module;
the first slave charging contact is used for being connected with a first master charging contact of a master charging device, the second slave charging contact is used for being connected with a second master charging contact of the master charging device, and the second slave charging contact is grounded;
the signal receiving end of the slave signal transmitting circuit is connected with the transmitting end of the second control module, the first access end of the slave signal transmitting circuit is connected with the first slave charging contact, and the second access end of the slave signal transmitting circuit is connected with the second slave charging contact;
the input end of the slave signal demodulation circuit is connected with the first slave charging contact, the signal output end of the slave signal demodulation circuit is used for being connected with the receiving end of the second control module, and the enabling end of the slave signal demodulation circuit is used for being connected with the enabling end of the second control module;
the power supply input end of the charging input control circuit is connected with the first slave charging contact piece, the power supply output end of the charging input control circuit is used for being connected with energy storage equipment, and the controlled end of the charging input control circuit is connected with the control end of the second control module;
when the first slave charging contact and the first master charging contact are in contact, and the second slave charging contact and the second master charging contact are in contact:
after the slave signal demodulation circuit acquires the interactive signal on the first main charging contact, the slave signal demodulation circuit demodulates the interactive signal and sends the demodulated interactive signal to a second control module of the main charging device, so that a transmitting end of the second control module sends a feedback instruction, and a control end of the second control module sends a first conduction instruction to control a charging input control circuit of the main charging device to be conducted;
the slave signal sending circuit modulates the feedback signal sent by the transmitting end of the second control module on the first slave charging contact piece, so that the master signal demodulation circuit of the master charging device demodulates the feedback signal after acquiring the feedback signal on the first slave charging contact piece, and sends the demodulated feedback signal to the first control module, so that the control end of the first control module sends a second conduction instruction to control the conduction of the charging output control circuit of the master charging device.
According to the slave charging device, the slave signal transmitting circuit comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor and a second optical coupling element;
a first end of the second optical coupler element is connected with one end of the eleventh resistor and one end of the twelfth resistor respectively, the other end of the twelfth resistor serves as a signal receiving end of the slave signal sending circuit, and the other end of the eleventh resistor is connected with a second end of the second optical coupler element, a third end of the second optical coupler element, a second access end and the ground respectively;
one end of the thirteenth resistor is used as the first access end, and the other end of the thirteenth resistor is connected with the fourth end of the second optical coupler element.
According to the secondary charging device, the secondary signal demodulation circuit comprises a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a third triode and a third optical coupler element;
one end of the fourteenth resistor is used as an input end of the slave signal demodulation circuit, and the other end of the fourteenth resistor is connected with a first end of the third optical coupler element;
a first end of the third triode is connected with one end of the fifteenth resistor and one end of the sixteenth resistor respectively, the other end of the sixteenth resistor is used as an enabling end of the slave signal demodulation circuit, and the other end of the fifteenth resistor is connected with a second end of the third triode and the ground respectively;
the second end of the third optical coupling element is connected with the third end of the third triode, the third end of the third optical coupling element is grounded, the fourth end of the third optical coupling element is respectively connected with one end of the seventeenth resistor and the receiving end of the second control module, and the other end of the seventeenth resistor is connected with the third power supply end.
According to the secondary charging device, the charging input control circuit comprises a second capacitor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a third diode, a fourth triode and a second switching element;
the first end of the fourth triode is respectively connected with one end of the eighteenth resistor and one end of the nineteenth resistor, the other end of the nineteenth resistor is respectively connected with the second end of the fourth triode and the ground, and the other end of the eighteenth resistor is used as the controlled end of the charging input control circuit;
a first end of the second switching element is respectively connected with a cathode of the third diode and a second power supply end, and a second end of the second switching element is respectively connected with an anode of the third diode and a third end of the fourth triode;
one end of the second capacitor is connected with the power input end of the charging input control circuit and the third end of the second switch element respectively, the other end of the second capacitor is connected with one end of the twentieth resistor, and the other end of the twentieth resistor is connected with the power output end of the charging input control circuit and the fourth end of the second switch element respectively.
The application provides a charging device, which comprises a main charging device and a slave charging device, wherein the main charging device and the slave charging device are arranged in the charging device;
the main signal transmitting circuit modulates the interactive signal transmitted by the transmitting end of the first control module on the first main charging contact;
when the first master charging contact and the first slave charging contact are in contact, and the second master charging contact and the second slave charging contact are in contact:
after the slave signal demodulation circuit acquires the interactive signal on the first main charging contact, the slave signal demodulation circuit demodulates the interactive signal and sends the demodulated interactive signal to the second control module, so that a transmitting end of the second control module sends a feedback instruction, and a control end of the second control module sends a first conduction instruction to control the charging input control circuit to be conducted;
the slave signal sending circuit modulates a feedback signal sent by a transmitting end of the second control module on the first slave charging contact;
after the main signal demodulation circuit acquires the feedback signal on the first slave charging contact, the main signal demodulation circuit demodulates the feedback signal and sends the demodulated feedback signal to the first control module, so that the control end of the first control module sends a second conduction instruction to control the conduction of the charging output control circuit.
The application provides an electronic wheelchair car, electronic wheelchair car include energy storage equipment and this application from charging device.
When a first main charging contact and a second main charging contact of a main charging device are respectively connected with a first slave charging contact and a second slave charging contact of a slave charging device, the main signal transmitting circuit, the main signal demodulation circuit, the slave signal transmitting circuit and the slave signal demodulation circuit are used for information interaction, so that after the main charging device and the slave charging device are stably connected, the energy storage device is charged through the main charging device and the slave charging device, the situation that a large current passes through the main charging device and the slave charging device at the moment of contact is effectively avoided, and furthermore, an anti-oxidation layer on the surface of a connector can be damaged by an electric arc generated by the large current.
Drawings
In order to illustrate the technical solution of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
Fig. 1 shows a schematic structural diagram of a charging device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a main charging device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a slave charging device according to an embodiment of the present application;
fig. 4 is a schematic side view of an electric wheelchair and a charger according to an embodiment of the present invention;
fig. 5 is a schematic top view of an electric wheelchair and a charger according to an embodiment of the present invention.
Description of the main element symbols:
10-a primary charging device; 11-a master signal transmitting circuit; 12-main signal demodulation circuit; 13-a charge output control circuit; 14-a first primary charging contact; 15-a second primary charging contact; 16-a first control module; 20-a slave charging device; 21-slave signal transmission circuit; 22-slave signal demodulation circuitry; 23-a charge input control circuit; 24-a first slave charging contact; 25-a second slave charging contact; 26-a second control module; 100-a charging device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
The charging apparatus 100 disclosed in the present application, as shown in fig. 1, includes a master charging device 10 and a slave charging device 20, the master charging device 10 includes a first master charging contact 14, a second master charging contact 15, a master signal transmitting circuit 11, a master signal demodulating circuit 12, a charging output control circuit 13, and a first control module 16; the slave charging device 20 includes a first slave charging contact 24, a second slave charging contact 25, a slave signal transmission circuit 21, a slave signal demodulation circuit 22, a charging input control circuit 23, and a second control module 26.
When the first master charging contact 14 and the first slave charging contact 24 are connected, and the second master charging contact 15 and the second slave charging contact 25 are connected: the main signal transmitting circuit 11 controls the power supply to be switched on according to a first control instruction transmitted by a transmitting terminal of a first control module 16, and modulates an interaction signal on the first main charging contact 14; after receiving the interactive signal, the slave signal demodulation circuit 22 demodulates the interactive signal, and sends the demodulated interactive signal to the second control module 26, so that the transmitting end of the second control module 26 sends a feedback instruction, and the control end of the second control module 26 sends a first conduction instruction to control the conduction of the charging input control circuit 23; the slave signal transmission circuit 21 modulates the feedback signal transmitted by the transmitting terminal of the second control module 26 on the first slave charging contact 24; after receiving the feedback signal, the main signal demodulation circuit 12 demodulates the feedback signal, and sends the demodulated feedback signal to the first control module 16, so that the control end of the first control module 16 sends a second conduction instruction to control the conduction of the charging output control circuit 13.
When the first main charging contact 14 and the second main charging contact 15 of the main charging device 10 are respectively connected with the first slave charging contact 24 and the second slave charging contact 25 of the slave charging device 20, the main signal transmitting circuit 11, the main signal demodulating circuit 12, the slave signal transmitting circuit 21 and the slave signal demodulating circuit 22 are used for information interaction, so that after the main charging device 10 and the slave charging device 20 are stably connected, the energy storage device is charged through the main charging device 10 and the slave charging device 20, the situation that a large current passes through the main charging device 10 and the slave charging device 20 at the moment of contact is effectively avoided, and further, the situation that an arc generated by the large current can damage an anti-oxidation layer on the surface of the connector is avoided.
Example 1
One embodiment of the present application proposes a main charging device 10, as shown in fig. 2, including a first main charging contact 14, a second main charging contact 15, a main signal transmitting circuit 11, a main signal demodulating circuit 12, a charging output control circuit 13, and a first control module 16;
the first main charging contact 14 is used for connecting with a first slave charging contact 24 of the slave charging device 20, the second main charging contact 15 is used for connecting with a second slave charging contact 25 of the slave charging device 20, and the second main charging contact 15 is grounded; the signal receiving end of the main signal transmitting circuit 11 is used for connecting with the transmitting end of the first control module 16, the power supply access end of the main signal transmitting circuit 11 is used for connecting with a power supply, and the power supply output end of the main signal transmitting circuit 11 is connected with the input end of the main signal demodulating circuit 12; the output end of the main signal demodulation circuit 12 is connected to the first main charging contact 14 and the power output end of the charging output control circuit 13, respectively, and the signal output end of the main signal demodulation circuit 12 is used for connecting to the receiving end of the first control module 16; the power input end of the charging output control circuit 13 is used for connecting the power supply, and the controlled end of the charging output control circuit 13 is used for connecting the control end of the first control module 16.
Further, referring to fig. 2, the main signal transmitting circuit 11 includes a first resistor, a second resistor, a third resistor, a fourth resistor, a switching tube and a first transistor.
One end of the first resistor is used as a signal receiving end of the main signal transmitting circuit 11; the other end of the first resistor is respectively connected with one end of the second resistor and the first end of the first triode; the second end of the first triode is connected with the other end of the second resistor and the ground respectively, the third end of the first triode is connected with one end of the third resistor, and the other end of the third resistor is connected with the first end of the switching tube and one end of the fourth resistor respectively; the other end of the fourth resistor is connected to the power supply access end of the main signal transmitting circuit 11 and the second end of the switch tube respectively; and the third end of the switching tube is used as the power output end of the main signal transmitting circuit 11.
The first triode can be an NPN type triode, the first end of the first triode is a base electrode, the second end of the first triode is an emitting electrode, and the third end of the first triode is a collecting electrode. The base electrode of the first triode controls the conduction or the cut-off of the collector electrode and the emitter electrode of the first triode according to the control instruction received from the emitter electrode of the first control module 16, and further, the switch tube is enabled to be conducted or cut-off.
It can be understood that the first control module 16 includes a power management unit, and the first control module 16 may determine whether the main charging module contacts the slave charging module by using the power management unit, and when the main charging module contacts the slave charging module, the transmitting terminal of the first control module 16 may transmit an interaction signal, so that the receiving terminal of the second main control module may receive the interaction signal, and complete the information interaction from the master to the slave.
Further, referring to fig. 2, the main signal demodulation circuit 12 includes a protection element, a fifth resistor, a sixth resistor, a seventh resistor, a first optical coupling element, and a first diode.
A first end of the protection element is used as an input end of the main signal demodulation circuit 12, and a second end of the protection element is respectively connected with one end of the fifth resistor and one end of the sixth resistor; the other end of the sixth resistor is connected with the first end of the first optical coupling element; a second end of the first optical coupler element is connected to the other end of the fifth resistor and an anode of the first diode respectively, a third end of the first optical coupler element is grounded, a fourth end of the first optical coupler element is connected to a signal sending end of the main signal demodulation circuit 12 and one end of the seventh resistor respectively, and the other end of the seventh resistor is used for connecting a first power supply end; the cathode of the first diode serves as the output of the main signal demodulation circuit 12.
It can be understood that after the switching tube is turned on, the turn-on voltage passes through the protection element, the fifth resistor and the sixth resistor, so that the turn-on current is 20mA, and when the first main charging contact 14 and the second main charging contact 15 of the main charging device 10 are short-circuited by an external reason and the short-circuiting time lasts for 3 seconds, the protection element is disconnected due to overheating, and thus, the main charging device 10 is effectively protected.
It can be understood that, when the slave charging device 20 is connected to the master charging device 10, the first optical coupler element of the master signal demodulation circuit 12 may be turned on or off according to a feedback signal fed back from the slave charging device 20, and transmit a result of the turning on or off to the first control module 16 through the signal transmitting end of the master signal demodulation circuit 12, so that the first control module 16 may control the turning on or off of the charging output control circuit 13 according to the feedback signal.
Further, referring to fig. 2, the charge output control circuit 13 includes an eighth resistor, a ninth resistor, a tenth resistor, a first capacitor, a first switching element, a second diode, and a second transistor.
A first end of the second triode is respectively connected with one end of the eighth resistor and one end of the ninth resistor, the other end of the eighth resistor is used as a controlled end of the charging output control circuit 13, and a second end of the second triode is respectively connected with the other end of the ninth resistor and the ground; a first end of the first switching element is respectively connected with a cathode of the second diode and a second power supply end, and a second end of the first switching element is respectively connected with an anode of the second diode and a third end of the second triode; one end of the first capacitor is connected to the power input end of the charging output control circuit 13 and the third end of the first switch element, and the other end of the first capacitor is connected to one end of the tenth resistor; the other end of the tenth resistor is connected to the power output end of the charging output control circuit 13 and the fourth end of the first switching element, respectively.
It is understood that the main signal transmission circuit 11 modulates the interaction signal transmitted by the transmitting end of the first control module 16 on the first main charging contact 14; when the first master charging contact 14 and the first slave charging contact 24 are in contact, and the second master charging contact 15 and the second slave charging contact 25 are in contact:
the interactive signal on the first master charging contact 14 is sent to the slave signal demodulation circuit 22, so that the slave signal demodulation circuit 22 demodulates the interactive signal, and sends the demodulated interactive signal to the second control module 26, so that the transmitting terminal of the second control module 26 sends a feedback instruction, and the control terminal of the second control module 26 sends a first conduction instruction to control the charging input control circuit 23 to conduct, so that the slave signal transmission circuit 21 modulates the feedback signal sent by the transmitting terminal of the second control module 26 on the first slave charging contact 24.
After acquiring the feedback signal on the first slave charging contact 24, the master signal demodulation circuit 12 demodulates the feedback signal, and sends the demodulated feedback signal to the first control module 16, so that the control end of the first control module 16 sends a second conduction instruction to control the conduction of the charging output control circuit 13.
Further, the first control module 16 includes a battery charging management unit, which can be used to track the charging status of the energy storage device, and when the energy storage device is fully charged or the master charging apparatus 10 is disconnected from the slave charging apparatus 20, the control end of the first control module 16 will immediately send a disconnection command to disconnect the charging power supply 24V from the first master charging contact 14.
Example 2
One embodiment of the present application proposes a slave charging device 20, and as shown in fig. 3, the slave charging device 20 includes a first slave charging contact 24, a second slave charging contact 25, a slave signal transmitting circuit 21, a slave signal demodulating circuit 22, a charging input control circuit 23, and a second control module 26.
The first slave charging contact 24 is used for connecting with the first master charging contact 14 of the master charging device 10, and the second slave charging contact 25 is used for connecting with the second master charging contact 15 of the master charging device 10; the signal receiving end of the slave signal transmitting circuit 21 is used for connecting the transmitting end of a second control module 26, the first access end of the slave signal transmitting circuit 21 is connected with the first slave charging contact 24, the second access end of the slave signal transmitting circuit 21 is connected with the second slave charging contact 25, and the second slave charging contact 25 is grounded; the input end of the slave signal demodulation circuit 22 is connected to the first slave charging contact 24, the signal output end of the slave signal demodulation circuit 22 is used for connecting to the receiving end of the second control module 26, and the enable end of the slave signal demodulation circuit 22 is used for connecting to the enable end of the second control module 26; the power input end of the charging input control circuit 23 is connected to the first slave charging contact 24, the power output end of the charging input control circuit 23 is used for connecting an energy storage device, and the controlled end of the charging input control circuit 23 is connected to the control end of the second control module 26.
Further, referring to fig. 3, the slave signal transmitting circuit 21 includes an eleventh resistor, a twelfth resistor, a thirteenth resistor, and a second optical coupling element.
A first end of the second optical coupler element is connected with one end of the eleventh resistor and one end of the twelfth resistor respectively, the other end of the twelfth resistor serves as a signal receiving end of the slave signal transmitting circuit 21, and the other end of the eleventh resistor is connected with a second end of the second optical coupler element, a third end of the second optical coupler element, a second access end and the ground respectively; one end of the thirteenth resistor is used as the first access end, and the other end of the thirteenth resistor is connected with the fourth end of the second optical coupler element.
It can be understood that the second control module 26 includes a power management unit, and the second control module 26 may determine whether the master charging module is in contact with the slave charging module by using the power management unit, and when the master charging module is in contact with the slave charging module, the transmitting terminal of the second control module 26 may send a feedback signal, so that the receiving terminal of the first master control module may receive the feedback signal to complete information interaction from the slave to the master.
Further, referring to fig. 3, the slave signal demodulation circuit 22 includes a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a third triode and a third optical coupler element.
One end of the fourteenth resistor is used as the input end of the slave signal demodulation circuit 22, and the other end of the fourteenth resistor is connected to the first end of the third optical coupler element; a first end of the third triode is respectively connected with one end of the fifteenth resistor and one end of the sixteenth resistor, the other end of the sixteenth resistor is used as an enabling end of the slave signal demodulation circuit 22, and the other end of the fifteenth resistor is respectively connected with a second end of the third triode and the ground; the second end of the third optical coupling element is connected with the third end of the third triode, the third end of the third optical coupling element is grounded, the fourth end of the third optical coupling element is respectively connected with one end of the seventeenth resistor and the receiving end of the second control module 26, and the other end of the seventeenth resistor is connected with the third power supply end.
It is understood that when the slave charging device 20 is connected to the master charging device 10, the third optical coupling element of the slave signal demodulation circuit 22 may be turned on or off according to the interactive signal transmitted by the master charging device 10, and transmit the result of turning on or off to the second control module 26 through the signal transmitting end of the slave signal demodulation circuit 22, so that the second control module 26 may control the charging input control circuit 23 to be turned on or off according to the interactive signal.
Further, referring to fig. 3, the charging input control circuit 23 includes a second capacitor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a third diode, a fourth transistor, and a second switching element.
A first end of the fourth triode is respectively connected with one end of the eighteenth resistor and one end of the nineteenth resistor, the other end of the nineteenth resistor is respectively connected with a second end of the fourth triode and the ground, and the other end of the eighteenth resistor is used as a controlled end of the charging input control circuit 23; a first end of the second switching element is respectively connected with a cathode of the third diode and a second power supply end, and a second end of the second switching element is respectively connected with an anode of the third diode and a third end of the fourth triode; one end of the second capacitor is connected to the power input end of the charging input control circuit 23 and the third end of the second switch element, the other end of the second capacitor is connected to one end of the twentieth resistor, and the other end of the twentieth resistor is connected to the power output end of the charging input control circuit 23 and the fourth end of the second switch element.
Exemplarily, when the first slave charging contact 24 is in contact with the first master charging contact 14 and the second slave charging contact 25 is in contact with the second master charging contact 15:
after acquiring the interaction signal on the first main charging contact 14 through the first auxiliary charging contact 24, the auxiliary signal demodulation circuit 22 demodulates the interaction signal, and sends the demodulated interaction signal to the second control module 26, so that the transmitting end of the second control module 26 sends a feedback instruction, and the control end of the second control module 26 sends a first conduction instruction to control the charging input control circuit 23 to conduct;
the slave signal sending circuit 21 modulates the feedback signal sent by the transmitting terminal of the second control module 26 on the first slave charging contact 24, so that the master signal demodulation circuit 12 demodulates the feedback signal after acquiring the feedback signal on the first slave charging contact 24, and sends the demodulated feedback signal to the first control module 16, so that the control terminal of the first control module 16 sends a second conduction instruction to control the conduction of the charging output control circuit 13.
Example 3
One embodiment of the present application proposes a charging apparatus 100, and as shown in fig. 3, the charging apparatus 100 includes a master charging device 10 and a slave charging device 20 disclosed in the present application.
It is understood that the main charging device 10 includes a first main charging contact 14, a second main charging contact 15, a main signal transmitting circuit 11, a main signal demodulating circuit 12, a charging output control circuit 13, and a first control module 16; the slave charging device 20 includes a first slave charging contact 24, a second slave charging contact 25, a slave signal transmission circuit 21, a slave signal demodulation circuit 22, a charging input control circuit 23, and a second control module 26.
Exemplarily, the main signal transmitting circuit 11 modulates the interaction signal transmitted by the transmitting end of the first control module 16 on the first main charging contact 14; when the first master charging contact 14 and the first slave charging contact 24 are connected, and the second master charging contact 15 and the second slave charging contact 25 are connected:
after acquiring the interaction signal on the first main charging contact 14, the slave signal demodulation circuit 22 demodulates the interaction signal, and sends the demodulated interaction signal to the second control module 26, so that the transmitting end of the second control module 26 sends a feedback instruction, and the control end of the second control module 26 sends a first conduction instruction to control the charging input control circuit 23 to conduct;
the slave signal transmission circuit 21 modulates the feedback signal transmitted by the transmitting terminal of the second control module 26 on the first slave charging contact 24; after acquiring the feedback signal on the first slave charging contact 24, the master signal demodulation circuit 12 demodulates the feedback signal, and sends the demodulated feedback signal to the first control module 16, so that the control end of the first control module 16 sends a second conduction instruction to control the conduction of the charging output control circuit 13.
Example 4
One embodiment of the present application provides an electric wheelchair including an energy storage device and a slave charging apparatus 20 as disclosed herein. Exemplarily, fig. 4 is a side view of an electric wheelchair and a charger, fig. 5 is a top view of the electric wheelchair and the charger, the electric wheelchair is located on the ground 1, a charging contact 2 is provided on the electric wheelchair, the charger 5 is installed on a wall surface 8, the charger 5 includes a charging contact 3, a limiting structure 4 and a 220V charging head 6, wherein the charging contact 3 and the charging contact 2 are horizontal, and the 220V charging head 6 is used for connecting with an 86-box 7 on the wall surface 8. Further, as can be seen from fig. 5, the charger 5 includes two left and right charging contacts 3, and the electric wheelchair includes two left and right charging contacts 2, wherein the two left and right charging contacts 2 correspond to the first slave charging contact 24 and the second slave charging contact 25, respectively, and the two left and right charging contacts 3 correspond to the first master charging contact 14 and the second master charging contact 15, respectively.
It can be understood that the electric wheelchair charges the energy storage device by obtaining a voltage of 24V or higher from the charging device 20, and if a spark is generated by directly connecting a high voltage during charging, there is a risk of short circuit and fire, so that it is required that the slave charging device 20 and the master charging device 10 of the electric wheelchair interact with each other first to confirm that the charging is started after the first slave charging contact 24 and the second slave charging contact 25 of the slave charging device 20 of the electric wheelchair are in charging contact with the first master charging contact 14 and the second master charging contact 15 of the master charging device 10, thereby ensuring that the charging process is safer.
The first and second slave charging contacts 24 and 25 of the slave charging device 20 of the electric wheelchair may be metal contact plates. The first and second main charging contacts 14 and 15 of the mating main charging device 10 for charging the electric wheelchair may be metal contacts, for example, metal pins. It is to be understood that the first and second slave charging contacts 24 and 25 may be metal contacts, and the first and second main charging contacts 14 and 15 of the main charging device 10 may be metal contact pieces.
Preferably, the first and second slave charging contacts 24 and 25 of the slave charging device 20 of the electric wheelchair are metal contact plates, and the area of the metal contact plates is set to 7.8cm by 3.5cm, so that when the electric wheelchair is charged close to the master charging device 10, the first and second slave charging contacts 24 and 25 of the slave charging device 20 of the electric wheelchair are allowed to be offset from the first and second master charging contacts 14 and 15 of the master charging device 10 within a certain range, and exemplarily, when the area of the metal contact plates is set to 7.8cm by 3.5cm, the offset range is 0-6.8 cm.
Furthermore, a limiting component, namely the limiting structure 4, exists between the first slave charging contact 24 and the second slave charging contact 25 and the first master charging contact 14 and the second master charging contact 15 of the master charging device 10, and the limiting component can ensure that the first slave charging contact 24 and the first master charging contact 14 do not fall out due to excessive contact and can ensure that the second slave charging contact 25 and the second master charging contact 15 do not fall out due to excessive contact.
Further, the first slave charging contact 24 and the second slave charging contact 25 are distributed from left to right, and the corresponding first master charging contact 14 and the corresponding second master charging contact 15 are distributed from left to right, and it can be understood that the distribution from left to right is better than the distribution from top to bottom. When the first slave charging contact 24 and the second slave charging contact 25 are vertically distributed and the corresponding first master charging contact 14 and the second master charging contact 15 are vertically distributed, the electric wheelchair is subjected to different pressures, and the wheels are deformed differently due to the different pressures, so that the positions of the vertically distributed first slave charging contact 24 and the vertically distributed second slave charging contact 25 are deviated, and further, the vertically distributed first slave charging contact 24 and the vertically distributed second slave charging contact 25 may not be effectively connected with the vertically distributed first master charging contact 14 and the vertically distributed second slave master charging contact 25. The left and right distributed first slave charging contact 24 and second slave charging contact 25 can increase the area of the metal contact pieces, so that when the electric wheelchair is subjected to different pressures, the left and right distributed first slave charging contact 24 and second slave charging contact 25 can be effectively connected with the left and right distributed first master charging contact 14 and second slave master electric component, and the electricity utilization safety is ensured.
The electric wheelchair disclosed by the application is simple and convenient in charging process, and is more suitable for users with low eyesight and poor mobility.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (10)
1. A main charging device, comprising a first main charging contact, a second main charging contact, a main signal transmitting circuit, a main signal demodulating circuit, a charging output control circuit, and a first control module;
the first master charging contact is used for being connected with a first slave charging contact of a slave charging device, the second master charging contact is used for being connected with a second slave charging contact of the slave charging device, and the second master charging contact is grounded;
the signal receiving end of the main signal sending circuit is connected with the transmitting end of the first control module, the power supply access end of the main signal sending circuit is used for being connected with a power supply, and the power supply output end of the main signal sending circuit is connected with the power supply input end of the main signal demodulation circuit;
the power supply output end of the main signal demodulation circuit is respectively connected with the first main charging contact and the power supply output end of the charging output control circuit, and the signal output end of the main signal demodulation circuit is connected with the receiving end of the first control module;
the power supply input end of the charging output control circuit is used for being connected with the power supply, and the controlled end of the charging output control circuit is connected with the control end of the first control module;
the main signal transmitting circuit modulates the interactive signal transmitted by the transmitting end of the first control module on the first main charging contact;
when the first master charging contact and the first slave charging contact are in contact, and the second master charging contact and the second slave charging contact are in contact:
the interaction signal on the first master charging contact is sent to a slave signal demodulation circuit of the slave charging device, so that the slave signal demodulation circuit demodulates the interaction signal, and sends the demodulated interaction signal to a second control module of the slave charging device, so that a transmitting end of the second control module sends a feedback instruction, and the control end of the second control module sends a first conduction instruction to control a charging input control circuit of the slave charging device to be conducted, so that a slave signal sending circuit of the slave charging device modulates the feedback signal sent by the transmitting end of the second control module on the first slave charging contact;
after the main signal demodulation circuit acquires the feedback signal on the first slave charging contact, the main signal demodulation circuit demodulates the feedback signal and sends the demodulated feedback signal to the first control module, so that the control end of the first control module sends a second conduction instruction to control the conduction of the charging output control circuit.
2. The main charging device of claim 1, wherein the main signal transmitting circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a switching tube and a first triode;
one end of the first resistor is used as a signal receiving end of the main signal transmitting circuit;
the other end of the first resistor is respectively connected with one end of the second resistor and the first end of the first triode;
the second end of the first triode is connected with the other end of the second resistor and the ground respectively, the third end of the first triode is connected with one end of the third resistor, and the other end of the third resistor is connected with the first end of the switching tube and one end of the fourth resistor respectively;
the other end of the fourth resistor is respectively connected with the power supply access end of the main signal transmitting circuit and the second end of the switch tube;
and the third end of the switching tube is used as the power output end of the main signal transmitting circuit.
3. The main charging device according to claim 1, wherein the main signal demodulation circuit includes a protection element, a fifth resistor, a sixth resistor, a seventh resistor, a first optical coupler element, and a first diode;
a first end of the protection element is used as a power input end of the main signal demodulation circuit, and a second end of the protection element is respectively connected with one end of the fifth resistor and one end of the sixth resistor;
the other end of the sixth resistor is connected with the first end of the first optical coupling element;
a second end of the first optical coupler element is connected with the other end of the fifth resistor and an anode of the first diode respectively, a third end of the first optical coupler element is grounded, a fourth end of the first optical coupler element is connected with a signal sending end of the main signal demodulation circuit and one end of the seventh resistor respectively, and the other end of the seventh resistor is used for connecting a first power supply end;
and the cathode of the first diode is used as the power output end of the main signal demodulation circuit.
4. The main charging device of claim 1, wherein the charging output control circuit comprises an eighth resistor, a ninth resistor, a tenth resistor, a first capacitor, a first switching element, a second diode, and a second transistor;
a first end of the second triode is respectively connected with one end of the eighth resistor and one end of the ninth resistor, the other end of the eighth resistor is used as a controlled end of the charging output control circuit, and a second end of the second triode is respectively connected with the other end of the ninth resistor and the ground;
a first end of the first switching element is respectively connected with a cathode of the second diode and a second power supply end, and a second end of the first switching element is respectively connected with an anode of the second diode and a third end of the second triode;
one end of the first capacitor is connected with a power supply input end of the charging output control circuit and a third end of the first switching element respectively, and the other end of the first capacitor is connected with one end of the tenth resistor;
the other end of the tenth resistor is connected to the power output end of the charging output control circuit and the fourth end of the first switching element respectively.
5. A slave charging apparatus, comprising a first slave charging contact, a second slave charging contact, a slave signal transmission circuit, a slave signal demodulation circuit, a charging input control circuit and a second control module;
the first slave charging contact is used for being connected with a first master charging contact of a master charging device, the second slave charging contact is used for being connected with a second master charging contact of the master charging device, and the second slave charging contact is grounded;
the signal receiving end of the slave signal transmitting circuit is connected with the transmitting end of the second control module, the first access end of the slave signal transmitting circuit is connected with the first slave charging contact, and the second access end of the slave signal transmitting circuit is connected with the second slave charging contact;
the input end of the slave signal demodulation circuit is connected with the first slave charging contact, the signal output end of the slave signal demodulation circuit is used for being connected with the receiving end of the second control module, and the enabling end of the slave signal demodulation circuit is used for being connected with the enabling end of the second control module;
the power supply input end of the charging input control circuit is connected with the first slave charging contact piece, the power supply output end of the charging input control circuit is used for being connected with energy storage equipment, and the controlled end of the charging input control circuit is connected with the control end of the second control module;
when the first slave charging contact and the first master charging contact are in contact, and the second slave charging contact and the second master charging contact are in contact:
after the slave signal demodulation circuit acquires the interactive signal on the first main charging contact, the slave signal demodulation circuit demodulates the interactive signal and sends the demodulated interactive signal to the second control module, so that the transmitting end of the second control module sends a feedback instruction, and the control end of the second control module sends a first conduction instruction to control the conduction of the charging input control circuit;
the slave signal sending circuit modulates the feedback signal sent by the transmitting end of the second control module on the first slave charging contact piece, so that the master signal demodulation circuit of the master charging device demodulates the feedback signal after acquiring the feedback signal on the first slave charging contact piece, and sends the demodulated feedback signal to the first control module of the master charging device, so that the control end of the first control module sends a second conduction instruction to control the conduction of the charging output control circuit of the master charging device.
6. The slave charging device of claim 5, wherein the slave signal transmitting circuit comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor, and a second light coupling element;
a first end of the second optical coupler element is connected with one end of the eleventh resistor and one end of the twelfth resistor respectively, the other end of the twelfth resistor serves as a signal receiving end of the slave signal sending circuit, and the other end of the eleventh resistor is connected with a second end of the second optical coupler element, a third end of the second optical coupler element, a second access end and the ground respectively;
one end of the thirteenth resistor is used as the first access end, and the other end of the thirteenth resistor is connected with the fourth end of the second optical coupler element.
7. The slave charging device according to claim 5, wherein the slave signal demodulation circuit includes a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a third transistor, and a third optical coupling element;
one end of the fourteenth resistor is used as an input end of the slave signal demodulation circuit, and the other end of the fourteenth resistor is connected with a first end of the third optical coupler element;
a first end of the third triode is connected with one end of the fifteenth resistor and one end of the sixteenth resistor respectively, the other end of the sixteenth resistor is used as an enabling end of the slave signal demodulation circuit, and the other end of the fifteenth resistor is connected with a second end of the third triode and the ground respectively;
the second end of the third optical coupling element is connected with the third end of the third triode, the third end of the third optical coupling element is grounded, the fourth end of the third optical coupling element is respectively connected with one end of the seventeenth resistor and the receiving end of the second control module, and the other end of the seventeenth resistor is connected with the third power supply end.
8. The slave charging device according to claim 5, wherein the charging input control circuit includes a second capacitor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a third diode, a fourth transistor, and a second switching element;
the first end of the fourth triode is respectively connected with one end of the eighteenth resistor and one end of the nineteenth resistor, the other end of the nineteenth resistor is respectively connected with the second end of the fourth triode and the ground, and the other end of the eighteenth resistor is used as the controlled end of the charging input control circuit;
a first end of the second switching element is respectively connected with a cathode of the third diode and a second power supply end, and a second end of the second switching element is respectively connected with an anode of the third diode and a third end of the fourth triode;
one end of the second capacitor is connected with the power input end of the charging input control circuit and the third end of the second switch element respectively, the other end of the second capacitor is connected with one end of the twentieth resistor, and the other end of the twentieth resistor is connected with the power output end of the charging input control circuit and the fourth end of the second switch element respectively.
9. A charging apparatus, characterized in that the charging apparatus comprises a master charging device of any one of claims 1 to 4 and a slave charging device of any one of claims 5 to 8;
the main signal transmitting circuit modulates the interactive signal transmitted by the transmitting end of the first control module on the first main charging contact;
when the first master charging contact and the first slave charging contact are in contact, and the second master charging contact and the second slave charging contact are in contact:
after the slave signal demodulation circuit acquires the interactive signal on the first main charging contact, the slave signal demodulation circuit demodulates the interactive signal and sends the demodulated interactive signal to the second control module, so that a transmitting end of the second control module sends a feedback instruction, and a control end of the second control module sends a first conduction instruction to control the charging input control circuit to be conducted;
the slave signal sending circuit modulates a feedback signal sent by a transmitting end of the second control module on the first slave charging contact;
after the main signal demodulation circuit acquires the feedback signal on the first slave charging contact, the main signal demodulation circuit demodulates the feedback signal and sends the demodulated feedback signal to the first control module, so that the control end of the first control module sends a second conduction instruction to control the conduction of the charging output control circuit.
10. An electrically powered wheelchair vehicle comprising an energy storage device and a secondary charging means as claimed in any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120205225.6U CN214380210U (en) | 2021-01-25 | 2021-01-25 | Main charging device, auxiliary charging device, charging equipment and electric wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120205225.6U CN214380210U (en) | 2021-01-25 | 2021-01-25 | Main charging device, auxiliary charging device, charging equipment and electric wheelchair |
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| Publication Number | Publication Date |
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| CN214380210U true CN214380210U (en) | 2021-10-08 |
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|---|---|---|---|
| CN202120205225.6U Active CN214380210U (en) | 2021-01-25 | 2021-01-25 | Main charging device, auxiliary charging device, charging equipment and electric wheelchair |
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| Country | Link |
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| CN (1) | CN214380210U (en) |
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