CN216146129U - Charging device, charging system and charging pile - Google Patents
Charging device, charging system and charging pile Download PDFInfo
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- CN216146129U CN216146129U CN202121948669.5U CN202121948669U CN216146129U CN 216146129 U CN216146129 U CN 216146129U CN 202121948669 U CN202121948669 U CN 202121948669U CN 216146129 U CN216146129 U CN 216146129U
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Abstract
The application discloses charging device, charging system, fill electric pile. Wherein the charging device comprises a switch module; the first voltage detection module is used for detecting a first voltage at one end of the switch module; the second voltage detection module is used for detecting a second voltage at the other end of the switch module; the processing module is respectively electrically connected with the first voltage detection module and the second voltage detection module and is used for generating a control instruction according to the difference value of the first voltage and the second voltage; and the control module is respectively and electrically connected with the processing module and the switch module and is used for controlling the working state of the switch module according to the control instruction. The application provides a charging device can charge charging equipment only when the voltage difference is less than the preset threshold value through detecting the voltage difference at the switch module both ends of charging device, avoids treating the danger that takes place to strike sparks when charging equipment trouble or mismatch with charging device.
Description
Technical Field
The utility model relates to the field of circuit control, in particular to a charging device, a charging system and a charging pile.
Background
In the related art, when a battery of an electric device is charged, if the battery connected to a charging device is directly charged, a fire may occur at a charging plug due to a battery failure, and a fire may occur in a serious situation.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a charging device, a charging system and a charging pile, wherein the charging device can charge equipment to be charged by detecting a voltage difference value at two ends of a switch module of the charging device and starting the switch module only when the voltage difference value is smaller than a preset threshold value, so that the danger of fire striking when the equipment to be charged breaks down or is not matched with the charging device is avoided.
In a first aspect, the present application provides a charging apparatus applied to a device to be charged, the charging apparatus including: a switch module; the first voltage detection module is electrically connected with one end of the switch module and is used for detecting a first voltage at one end of the switch module; the second voltage detection module is electrically connected with the other end of the switch module and the device to be charged respectively, and is used for detecting a second voltage at the other end of the switch module; the processing module is electrically connected with the first voltage detection module and the second voltage detection module respectively, and is used for generating a control instruction according to the difference value of the first voltage and the second voltage; and the control module is respectively electrically connected with the processing module and the switch module and is used for controlling the working state of the switch module according to the control instruction.
This application is through real-time detection charging device's charging voltage, the voltage of treating the charging equipment, promptly the first voltage and the second voltage at switch module both ends to real-time transmission handles to processing module, by processing module basis first voltage, the difference of second voltage are calculated to the second voltage, and generate corresponding control command according to above-mentioned first voltage, second voltage and voltage difference, control command includes first control command and second control command. The first control instruction is used for controlling the switch module to be closed and stopping charging the equipment to be charged when the equipment to be charged has a fault or is not matched with the charging device; and the second control instruction is used for controlling the switch module to be switched on to charge the equipment to be charged when the equipment to be charged is good and is matched with the charging device. Through the voltage value that detects switch module both ends, calculate the voltage difference value, can select whether to charge according to the situation of the equipment of waiting to charge, guaranteed the matching of the equipment of waiting to charge and charging device, carry out effective safe charging, avoided because the equipment of waiting to charge trouble, cause the danger that takes place to strike sparks at the kneck that charges.
In some embodiments, the control module comprises: a first diode electrically connected with the switch module; and the base electrode of the triode is electrically connected with the processing module, the emitting electrode of the triode is electrically connected with the second voltage detection module, and the collecting electrode of the triode is electrically connected with the first diode.
In some embodiments, the control module further comprises: one end of the first resistor is electrically connected with the processing module, and the other end of the first resistor is electrically connected with the switch module; one end of the second resistor is connected with the base electrode of the triode, and the other end of the first resistor is electrically connected with the emitting electrode of the triode; a capacitor electrically connected in parallel with the second resistor; and one end of the third resistor is electrically connected with the base electrode of the triode, and the other end of the third resistor is connected with the processing module.
In some embodiments, the control module further comprises: and the second diode is electrically connected with the first diode in parallel.
In some embodiments, the first voltage detection module comprises: the fourth resistor is electrically connected with one end of the switch module and is electrically connected with an external power supply; the fifth resistor is electrically connected with the fourth resistor; the sixth resistor is electrically connected with the fifth resistor and the emitting electrode of the triode respectively; the processing module is electrically connected with the first connecting nodes of the sixth resistor and the fifth resistor.
In some embodiments, the second voltage detection module comprises: the seventh resistor is electrically connected with the other end of the switch module; the eighth resistor is electrically connected with the seventh resistor; the ninth resistor is electrically connected with the eighth resistor and the emitting electrode of the triode respectively; the processing module is electrically connected with the second connection nodes of the eighth resistor and the ninth resistor.
In some embodiments, the switch module comprises: and the control end of the relay is respectively connected with the first diode and the first voltage detection module, and a normally open contact of the relay is connected with the second voltage detection module.
In a second aspect, the present application further provides a charging system, including: a charging device as in any one of the above embodiments; and the equipment to be charged is connected with the second voltage detection module.
In a third aspect, the present application further provides a charging pile, including the charging system according to the above embodiment.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the following figures and examples, in which:
FIG. 1 is a block diagram of a charging device according to the present invention;
fig. 2 is a circuit diagram of the charging device of the present invention.
Reference numerals: 100. a charging device; 110. a switch module; 120. a control module; 130. a processing module; 140. a first voltage detection module; 150. and the second voltage detection module.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be noted that the device to be charged refers to a device capable of converting chemical energy and electric energy into each other, such as a rechargeable battery. When the battery is used as a power supply, the chemical energy stored in the battery is converted into electric energy and output, and stable voltage and current can be provided for electric equipment. After the chemical energy in the battery is exhausted, the battery needs to be charged, the battery at the moment is used as equipment to be charged, the charging device charges the battery, the battery converts the electric energy of the charging device into the chemical energy and stores the chemical energy, and the rechargeable battery can be recycled. However, there is a possibility that the device to be charged has a fault, and if the faulty device to be charged is connected to the charging device and directly charged, the device to be charged will be short-circuited in the circuit of the charging device, a huge inrush current will be generated, and sparks will occur at the interface between the charging device and the device to be charged, which will cause the charging device to age and blacken, and in severe cases even cause fire. For this reason, before charging the device to be charged connected to the charging device, the voltage of the device to be charged in the circuit needs to be detected to ensure that the device to be charged is good and prevent the occurrence of an ignition phenomenon due to a short circuit.
In a first aspect, please refer to fig. 1, the present application provides a charging apparatus 100 applied to a device to be charged, where the charging apparatus 100 includes: a switch module 110; a first voltage detection module 140 electrically connected to one end of the switch module 110, wherein the first voltage detection module 140 is configured to detect a first voltage at one end of the switch module 110; a second voltage detection module 150, electrically connected to the other end of the switch module 110 and the device to be charged, respectively, where the second voltage detection module 150 is configured to detect a second voltage at the other end of the switch module 110; a processing module 130 electrically connected to the first voltage detecting module 140 and the second voltage detecting module 150, respectively, wherein the processing module 130 is configured to generate a control command according to a difference between the first voltage and the second voltage; and the control module 120 is electrically connected to the processing module 130 and the switch module 110, respectively, and the control module 120 is configured to control a working state of the switch module 110 according to the control instruction.
As can be understood, the switch module 110 is used to control the charging apparatus 100 to charge or stop charging the device to be charged. The first voltage detection module 140 is configured to detect a real-time charging voltage of the charging device 100, where the charging voltage is a voltage of an external power source, transmit the charging voltage to the processing module 130 in the charging device 100, and generate the first voltage. The second voltage detection module 150 is configured to detect a real-time voltage of the device to be charged, and transmit the voltage value to the processing module 130 for processing, so as to generate the second voltage. The second voltage detection module 150 is further connected to the other end of the switch module 110, that is, the second voltage of the device to be charged is equal to the voltage value at the other end of the switch module 110. It is understood that the first voltage and the second voltage are voltages across the switch module 110, respectively. The good device to be charged has a certain voltage and has a small difference from the charging voltage of the charging device 100. Therefore, after the device to be charged is connected to the charging device 100, the voltage of the device to be charged and the charging voltage of the charging device 100, that is, the first voltage and the second voltage are detected and compared, and whether the device to be charged has a fault or not can be judged, so that charging and sparking are avoided.
Specifically, assuming that the first voltage detected by the first voltage detection module 140 is V1 and the second voltage detected by the second voltage detection module 150 is V2, the first voltage and the second voltage are transmitted to the processing module 130, the processing module 130 calculates a voltage difference according to the voltage values of the first voltage and the second voltage, and the voltage difference between the first voltage and the second voltage is Δ V ═ V1-V2, and the processing module 130 generates corresponding control commands according to the voltage difference Δ V, V1 and V2, as follows:
when Δ V is V1-V2 is V1, that is, V2 is 0, the voltage at one end of the switch module 110 is 0, that is, the voltage of the device to be charged is 0, it is determined that the device to be charged is faulty or the device to be charged is not connected to the charging apparatus 100, the switch module 110 is turned off, and the charging of the device to be charged is stopped. At this time, if the switch module 110 is turned on, the charging device 100 charges the device to be charged, since the voltage of one end of the switch module 110 close to the charging interface (the interface connected to the device to be charged) is 0, and the other end is connected to the external power supply for charging, there is a large charging voltage, the switch module 110 is turned on, when the device to be charged is charged, because the voltage difference between the two ends is large, a large impact current will be generated instantaneously, and the ignition phenomenon occurs at the charging interface. Therefore, after the first voltage V1 and the second voltage V2 are received by the processing module 130, the corresponding voltage difference Δ V is calculated. When the first voltage V1 is not 0 and the second voltage V2 is 0, that is, Δ V is equal to V1, the processing module 130 generates a first control command, the first control command is transmitted to the control module 120, and the control module 120 controls the switch module 110 to be turned off according to the first control command, that is, stops charging the device to be charged.
When Δ V is equal to V1-V2 is equal to V3, and V3 is greater than the first preset threshold, that is, V2 is much smaller than V1, the voltage of the device to be charged is much smaller than the charging voltage of the charging apparatus 100, it is determined that the device to be charged has a fault or the device to be charged does not match the charging apparatus 100, the switching module 110 is turned off, and the device to be charged is stopped being charged. The first preset threshold is different according to the sizes of V1 and V2, that is, the first preset threshold of different devices to be charged in the charging device 100 is different. In the related art, the charging voltage of the charging apparatus 100 is slightly higher than the voltage of the device to be charged. On the one hand, if the charging voltage is lower than the voltage of the device to be charged, the charging apparatus 100 cannot charge the device to be charged; on the other hand, if the charging voltage is too high, the life of the device to be charged is shortened by overcharging. Therefore, the charging voltage of the charging device 100 is only slightly higher than the voltage of the device to be charged, and charging can be performed efficiently and safely. For example, when a 12-volt battery is charged, the charging voltage used is 15.4 volts. Different charging voltages can be selected according to different devices to be charged, and the embodiment is not limited to this example. It can be understood that, when there is a fault in the device to be charged, or the device to be charged is not matched with the charging apparatus 100 (the charging voltage is too high), the difference between the detected first voltage and the second voltage is large, at this time, the processing module 130 generates a first control instruction according to the above-mentioned V1, V2, and Δ V, the first control instruction is transmitted to the control module 120, and the control module 120 controls the switch module 110 to be turned off according to the first control instruction, so as to stop charging the device to be charged.
When Δ V is equal to V1-V2 is equal to V4, and V4 is smaller than a second preset threshold, that is, the difference between the first voltage V1 and the second voltage V2 is smaller, it is determined that the device to be charged is good and is matched with the charging device 100, the switch module 110 is turned on, and the charging device 100 starts to charge the device to be charged. The second preset threshold is different according to different ideal charging voltages of different devices to be charged in the charging apparatus 100. Specifically, as is known from the above, the charging voltage of the charging apparatus 100 and the voltage of the device to be charged cannot differ excessively. After the device to be charged is connected to the charging device 100, the first voltage detection module 140 and the second voltage detection module 150 detect voltages at two ends of the switch module 110, and transmit the voltages to the processing module 130 to calculate a difference between the two voltages, where when the voltage difference Δ V is smaller than a second preset threshold, that is, the voltage difference between the voltage of the device to be charged and the charging voltage of the charging device 100 is in a suitable range, the processing module 130 generates a second control instruction, the second control instruction is transmitted to the control module 120, and the control module 120 controls the switch module 110 to be turned on according to the second control instruction, so as to charge the device to be charged. At this time, the switch module 110 is turned on, because the voltage difference between the two ends of the switch module 110 is small, the ignition phenomenon of the charging interface cannot occur, and the charging device 100 is matched with the equipment to be charged, so that safe and effective charging can be performed, and the influence on the service life of the equipment to be charged during charging is reduced.
In the embodiment of the present application, the charging voltage of the charging device 100 and the voltage of the device to be charged, that is, the first voltage and the second voltage at two ends of the switch module 110, are detected in real time and transmitted to the processing module 130 for processing, the processing module 130 calculates a difference between the first voltage and the second voltage according to the first voltage and the second voltage, and generates a corresponding control instruction according to the first voltage, the second voltage and the voltage difference, where the control instruction includes a first control instruction and a second control instruction. The first control instruction is used for controlling the switch module 110 to be turned off and stopping charging the device to be charged when the device to be charged has a fault or is not matched with the charging device 100; the second control instruction is used to control the switch module 110 to be turned on to charge the device to be charged when the device to be charged is good and matches with the charging device 100. Through the voltage value that detects switch module 110 both ends, calculate the voltage difference value, can select whether to charge according to the situation of the equipment of waiting to charge, guaranteed the matching of the equipment of waiting to charge with charging device 100, carry out effective safe charging, avoided because the equipment of waiting to charge trouble, cause the danger that takes place to strike sparks at the kneck that charges.
Referring to fig. 2, in some embodiments, the switch module 110 includes: and a control terminal RLY-A of the relay is respectively connected with the first diode D1 and the first voltage detection module 140, and a normally open contact RLY-B of the relay is connected with the second voltage detection module 150.
Specifically, the relay is an electric control device and is provided with a control end and a controlled end, the normally open contact RLY-B is the controlled end, and the circuit of the normally open contact RLY-B is kept in an open state when no current flows. The relay functions as an automatic switch in the circuit. For example, the relay may be composed of a first coil and a second coil, wherein the first coil serves as a controlled terminal and the second coil serves as a control terminal, when there is no current in the second coil, the first coil maintains an operating state that the circuit is disconnected, that is, the switch module 110 is turned off, and there is no current in the charging circuit. When current is input into the second coil, the first coil is affected by the electromagnetic induction law, the normally open contact RLY-B is controlled to be closed by the first coil, the charging circuit is conducted, the switch module 110 is opened, and the charging device 100 charges the device to be charged. Specifically, the positive electrode of the device to be charged is electrically connected to the other end of the switch module 110, i.e., electrically connected to BAT +, and the negative electrode of the device to be charged is electrically connected to BAT-. BAT + and BAT-are positive and negative electrodes of a charging interface of the charging device respectively.
Referring again to fig. 2, in some embodiments, the control module 120 includes: a first diode D1 electrically connected to the switch module 110; a transistor Q1, wherein a base 1 of the transistor Q1 is electrically connected to the processing module 130, an emitter 2 of the transistor Q1 is electrically connected to the second voltage detecting module 150, and a collector 3 of the transistor Q1 is electrically connected to the first diode D1.
Specifically, the first diode D1 refers to an electronic component having two electrodes, allowing current to flow in only a single direction. The transistor Q1 is a semiconductor device for controlling current, and functions to amplify a weak signal into an electrical signal with a large amplitude, and thus can be used as the switching control module 120. The triode Q1 comprises three pins, namely a base 1, a collector 3 and an emitter 2. When the voltage applied to the base 1 of the triode Q1 is smaller than the on-state voltage of the triode Q1, the current of the base 1 is zero, the current of the collector 3 and the current of the emitter 2 are both zero, the triode Q1 loses the current amplification effect at this time, the state between the collector 3 and the emitter 2 is equivalent to the off-state of the switch, and the triode Q1 is called to be in an off-state. When the voltage applied to the base 1 of the transistor Q1 is greater than the turn-on voltage of the transistor Q1 and is at a proper value, the emitter 2 of the transistor Q1 is biased in the forward direction and the collector 3 is biased in the reverse direction, and the current of the base 1 controls the current of the collector 3, so that the transistor Q1 has a current amplification effect and the transistor Q1 is in a turn-on state.
It can be understood that when the base 1 of the transistor Q1 is at a high level, the transistor Q1 is turned on, and the relay connected to the collector 3 of the transistor Q1 is powered on to form a loop, the switch module 110 is turned on, and the charging device 100 performs charging. When the base 1 of the transistor Q1 is at a low level, the transistor Q1 is turned off, the relay is powered off, the normally open contact RLY-B in the switch module 110 returns to a normal state, the switch module 110 is turned off, and charging is stopped. In addition, when the transistor Q1 is turned off, the current in the control module 120 suddenly decreases, the relay acts as an inductive load, and when the current is suddenly turned off, a very large back electromotive force is generated due to the self-inductance effect (lenz's law). This back emf across transistor Q1 breaks down transistor Q1. And the first diode D1 connected in reverse parallel with the relay can be conducted when the relay generates the reverse electromotive force, the reverse electromotive force is consumed, and the transistor Q1 is prevented from being broken down.
It can be understood that the transistor Q1 in this embodiment controls the operation state of the transistor Q1 according to the voltage at the base 1. Specifically, when the processing module 130 determines that the currently connected device to be charged has a fault or is not matched, the processing module 130 outputs a first control instruction to control the charging device 100 to disconnect the charging circuit. Specifically, the first control command is low level, the low level signal is transmitted to the base 1 of the transistor Q1, the transistor Q1 is turned off, and no current signal is generated in the control circuit. The normally open contact RLY-B of the relay in the switch module 110 is maintained in an open state, the switch module 110 is turned off, and the charging circuit is disconnected. When the processing module 130 determines that the currently accessed device to be charged is good and matches with the charging device 100, the processing module 130 outputs a second control instruction to control the charging device 100 to perform charging. Specifically, the second control command is a high level, a high level signal is transmitted to the base 1 of the triode Q1, the triode Q1 is turned on, a current signal is generated in the control circuit, the normally open contact RLY-B of the relay is changed into a closed state, the switch module 110 is turned on, and the charging circuit is turned on.
In this embodiment, by providing the corresponding transistor Q1, the diode, and the relay, the control of the charging circuit switch module 110 can be realized by a simple output signal (high level and low level), and the control circuit is simple and reliable.
Referring again to fig. 2, in some embodiments, the control module 120 further includes: a second diode D2 electrically connected in parallel with the first diode D1.
It will be appreciated that the first diode D1 is connected in anti-parallel with the relay for protecting the transistor Q1 from breakdown when the relay generates a back emf. When the reverse electromotive force is too large and the current flowing through the diode is too large, the diode may burn out. Therefore, the second diode D2 is electrically connected in parallel with the first diode D1, which can shunt the current and ensure that the circuit still works effectively when the other diode is damaged.
Referring again to fig. 2, in some embodiments, the control module 120 further includes: a first resistor R1, wherein one end of the first resistor R1 is electrically connected with the processing module 130, and the other end of the first resistor R1 is electrically connected with the switch module 110; one end of the second resistor R2 is connected with the base 1 of the triode Q1, and the other end of the second resistor R2 is electrically connected with the emitter 2 of the triode Q1; a capacitor C1 electrically connected in parallel with the second resistor R2; one end of the third resistor R3, one end of the third resistor R3 is electrically connected to the base 1 of the triode Q1, and the other end of the third resistor R3 is connected to the processing module 130.
It can be understood that the first resistor R1 and the third resistor R3 are respectively located at the collector 3 and the base 1 of the transistor Q1, so as to prevent the device from being damaged due to excessive current in the control module 120. One end of the first resistor R1 is electrically connected to the first diode D1, and the other end of the first resistor R1 is electrically connected to the power supply terminal VDD of the processing module 130, so that the current varying in the control circuit can be converted into a varying voltage, thereby implementing a voltage amplification function; the second resistor R2 is connected between the base electrode 1 and the emitter electrode 2 and used for providing a static working point of the base electrode 1 and ensuring that the triode Q1 is reliably turned off when the signal input of the base electrode 1 is converted into low level; the capacitor C1, the capacitor C1 is used as a bypass capacitor C1, can filter, and improves the anti-interference capability of the triode Q1; the third resistor R3 has one end electrically connected to the base 1 and the other end electrically connected to the DELAY interface of the processing module 130, and the third resistor R3 is also called a bias resistor and can provide a forward bias voltage to the transistor Q1.
Referring again to fig. 2, in some embodiments, the first voltage detecting module 140 includes: a fourth resistor R4 electrically connected to one end of the switch module 110 and to an external power source, i.e., V0 of fig. 2; a fifth resistor R5 electrically connected to the fourth resistor R4; a sixth resistor R6 electrically connected to the fifth resistor R5 and the emitter 2 of the transistor Q1, respectively; wherein the processing module 130 is electrically connected to the first connection nodes VO-SEN of the sixth resistor R6 and the fifth resistor R5.
It is understood that according to the principle of voltage division, the resistance values of the three resistors connected in series and the voltage value at the first connection node VO-SEN, the voltage values at the other connection nodes can be calculated, so as to obtain the voltage value at one end of the fourth resistor R4 electrically connected to the external power source V0 for charging, i.e., the charging voltage. The specific calculation formula is as follows:
wherein, VaFor detecting the voltage at the first connection node VO-SEN, R4、R5、R6The resistance values of the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6 are respectively, and V1 is the first voltage.
Referring again to fig. 2, in some embodiments, the second voltage detecting module 150 includes: a seventh resistor R7 electrically connected to the other end of the switch module 110; an eighth resistor R8 electrically connected to the seventh resistor R7; a ninth resistor R9 electrically connected to the eighth resistor R8 and the emitter 2 of the transistor Q1, respectively; the processing module 130 is electrically connected to the second connection nodes BAT-SEN of the eighth resistor R8 and the ninth resistor R9.
It will be appreciated that the voltage at the other end of the switch module 110, i.e. the voltage of the device to be charged, can be calculated according to the same calculation principle as described above. The specific calculation formula is as follows:
wherein, VbFor detecting a voltage at the second connection node BAT-SEN, R7、R8、R9The resistance values of the seventh resistor R7, the eighth resistor R8 and the ninth resistor R9 are respectively, and V2 is the second voltage.
It can be understood that, according to the above calculation formula Δ V — V1-V2, after the difference between the first voltage and the second voltage is calculated by the processing module 130, the first control instruction or the second control instruction is generated according to the first voltage, the second voltage and the voltage difference, so as to control the switch module 110 to be turned on or turned off, thereby determining whether the device to be charged is good or not according to the voltage of the device to be charged and the charging voltage of the charging apparatus 100, and determining whether the device to be charged is good or not and whether the device to be charged is matched with the device to be charged, ensuring the safety and effectiveness of charging, avoiding the phenomenon of charging sparking, and the circuit device used in the charging apparatus 100 has a simple structure and is easy to implement.
The type of the processing module 130 may be a chip with a type of PIC18F26K80-I/SS, and the first connection node VO-SEN is electrically connected to an RB0 interface of the chip; the second connection node BAT-SEN is electrically connected with an RB1 interface of the chip; the DELAY interface is an RB4 interface of the chip.
In a second aspect, the present application provides a charging system comprising: the charging device 100 according to any of the above embodiments; and the device to be charged is connected with the second voltage detection module 150.
In a third aspect, the present application provides a charging pile including the charging system according to the above embodiment.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (9)
1. Charging device is applied to the equipment of waiting to charge, its characterized in that, charging device includes:
a switch module;
the first voltage detection module is electrically connected with one end of the switch module and is used for detecting a first voltage at one end of the switch module;
the second voltage detection module is electrically connected with the other end of the switch module and the device to be charged respectively, and is used for detecting a second voltage at the other end of the switch module;
the processing module is electrically connected with the first voltage detection module and the second voltage detection module respectively, and is used for generating a control instruction according to the difference value of the first voltage and the second voltage;
and the control module is respectively electrically connected with the processing module and the switch module and is used for controlling the working state of the switch module according to the control instruction.
2. The charging device of claim 1, wherein the control module comprises:
a first diode electrically connected with the switch module;
and the base electrode of the triode is electrically connected with the processing module, the emitting electrode of the triode is electrically connected with the second voltage detection module, and the collecting electrode of the triode is electrically connected with the first diode.
3. The charging device of claim 2, wherein the control module further comprises:
one end of the first resistor is electrically connected with the processing module, and the other end of the first resistor is electrically connected with the switch module;
one end of the second resistor is connected with the base electrode of the triode, and the other end of the first resistor is electrically connected with the emitting electrode of the triode;
a capacitor electrically connected in parallel with the second resistor;
and one end of the third resistor is electrically connected with the base electrode of the triode, and the other end of the third resistor is connected with the processing module.
4. A charging arrangement as claimed in claim 3, in which the control module further comprises:
and the second diode is electrically connected with the first diode in parallel.
5. The charging device according to claim 2, wherein the first voltage detection module comprises:
the fourth resistor is electrically connected with one end of the switch module and is electrically connected with an external power supply;
the fifth resistor is electrically connected with the fourth resistor;
the sixth resistor is electrically connected with the fifth resistor and the emitting electrode of the triode respectively;
the processing module is electrically connected with the first connecting nodes of the sixth resistor and the fifth resistor.
6. The charging device according to claim 2, wherein the second voltage detection module comprises:
the seventh resistor is electrically connected with the other end of the switch module;
the eighth resistor is electrically connected with the seventh resistor;
the ninth resistor is electrically connected with the eighth resistor and the emitting electrode of the triode respectively;
the processing module is electrically connected with the second connection nodes of the eighth resistor and the ninth resistor.
7. A charging arrangement as claimed in any of claims 2 to 6, in which the switch module comprises:
and the control end of the relay is respectively connected with the first diode and the first voltage detection module, and a normally open contact of the relay is connected with the second voltage detection module.
8. An electrical charging system, comprising:
the charging device according to any one of claims 1 to 7;
and the equipment to be charged is connected with the second voltage detection module.
9. Charging pile, characterized in that it comprises a charging system according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121948669.5U CN216146129U (en) | 2021-08-18 | 2021-08-18 | Charging device, charging system and charging pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121948669.5U CN216146129U (en) | 2021-08-18 | 2021-08-18 | Charging device, charging system and charging pile |
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| Publication Number | Publication Date |
|---|---|
| CN216146129U true CN216146129U (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121948669.5U Active CN216146129U (en) | 2021-08-18 | 2021-08-18 | Charging device, charging system and charging pile |
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| Country | Link |
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| CN (1) | CN216146129U (en) |
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