CN107512185B - Intelligent electric power-assisted vehicle charger - Google Patents
Intelligent electric power-assisted vehicle charger Download PDFInfo
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- CN107512185B CN107512185B CN201710748808.1A CN201710748808A CN107512185B CN 107512185 B CN107512185 B CN 107512185B CN 201710748808 A CN201710748808 A CN 201710748808A CN 107512185 B CN107512185 B CN 107512185B
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- 238000001514 detection method Methods 0.000 claims abstract description 17
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- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000005856 abnormality Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
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- H02J7/027—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/24—Personal mobility vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention provides an intelligent electric power-assisted vehicle charger which comprises a mains supply input interface, a power management module, a first solid-state relay, a second solid-state relay, a third solid-state relay, a fourth solid-state relay, a display screen, an MCU unit, a SIM module, a temperature sensor, a driving circuit, a buzzer, an LED lamp, a key, a slow charging circuit, a fast charging circuit, a current detection module and a storage battery charging interface, wherein the power management module is connected with the first solid-state relay; the charger has over-temperature protection, and the charging mode is switched automatically and manually, and comprises: the charging system has the advantages that the charging system is in a fast charging mode, a slow charging mode and a hybrid charging mode, the charging time can be displayed, the owner can be informed after the charging is finished, the current of the charging circuit can be detected, the real disconnection of the storage battery and the charging circuit after the charging is finished is ensured, the storage battery is prevented from being damaged, the power supply of the charging circuit is disconnected, and resources are saved.
Description
Technical Field
The invention relates to the technical field of electric power-assisted vehicle charging, in particular to an intelligent electric power-assisted vehicle charger which has the functions of temperature monitoring, state display, full alarm, timely circuit breaking, remote communication notification and the like.
Background
Along with the improvement of the living standard of people, the environmental protection consciousness is gradually enhanced, the number of electric power assisted vehicles is increased, and great convenience is brought to the travel of people. Most electric bicycle battery charges and all is from leading to the bicycle shed in the home, and current charger has the storage battery to be charged and can not disconnect with charging circuit after fully charging, leads to the storage battery to overcharge, causes the storage battery to warp and explode even, and the high temperature is too high during charging, and the conflagration easily takes place, causes loss of property, and charge mode function is single, and the user can't know charge state scheduling problem.
Disclosure of Invention
The invention aims to provide an intelligent electric power-assisted vehicle charger which has the functions of over-temperature protection, disconnection after charging and real-time display of the state of the charger.
In order to achieve the above purpose, the specific technical scheme adopted by the invention is as follows: an intelligent electric power-assisted vehicle charger comprises a mains supply input interface, a power management module, a first solid-state relay, a second solid-state relay, a third solid-state relay, a fourth solid-state relay, a display screen, an MCU unit, a SIM module, a temperature sensor, a driving circuit, a buzzer, an LED lamp, a key, a slow charging circuit, a fast charging circuit, a current detection module and a storage battery charging interface; the utility power input interface is connected with the first contact of the load end of the first solid-state relay and the second solid-state relay, the second contact of the load end of the first solid-state relay is connected with the input end of the slow charging circuit, the second contact of the load end of the second solid-state relay is connected with the input end of the fast charging circuit, the output end of the slow charging circuit and the output end of the fast charging circuit are simultaneously connected with the first contact of the load end of the third solid-state relay, the second contact of the load end of the third solid-state relay is connected with the first end of the battery charging interface, the grounding end of the slow charging circuit and the grounding end of the fast charging circuit are simultaneously connected with the first contact of the load end of the fourth solid-state relay, the second contact of the load end of the fourth solid-state relay is connected with the second end of the battery charging interface, the utility power input interface is connected with the input end of the power management module, the power management module is configured to convert commercial power into direct current for output, the output end of the power management module is connected with the MCU unit, a display screen, a SIM module, a temperature sensor, a driving circuit, an LED lamp and a current detection module, and is used for supplying power, the temperature sensor is configured to collect temperature feedback in the charger and feed back the temperature to the MCU unit, the display screen is configured to display real-time charging data values of the charger, the SIM module is configured to send information to the outside, the LED lamp is configured to indicate the working state of the charger, the display screen, the SIM module, the temperature sensor, the driving circuit, the LED lamp and the current detection module are connected with the MCU unit, the driving circuit is connected with the buzzer to drive the buzzer, the keys are connected with the MCU unit, and the output end of the power management module is respectively connected with the first solid state relay, the second solid state relay, the third solid state relay, the first contact of the control end of the fourth solid-state relay is connected, the second contacts of the control ends of the first solid-state relay, the second solid-state relay, the third solid-state relay and the fourth solid-state relay are respectively connected with the MCU unit, and the current detection module is connected in a circuit of the battery charging interface to detect charging current and feed back the charging current to the MCU unit.
In the above structure, the charger has three charging modes: the charging system comprises a fast charging mode, a slow charging mode and a hybrid charging mode, wherein the hybrid charging mode is that the slow charging is performed when the electric quantity is reached, a user can select a corresponding mode according to own requirements, and a corresponding charging module can be selected only by controlling the first solid state relay or the second solid state relay through the MCU unit.
The MCU unit can display the real-time charging data values of the chargers such as charging time, charging mode, charger temperature and the like on the display screen, and the corresponding LED lamps are lighted to be used for reference of a user to know the charging state of the chargers.
If the temperature of the charger is too high and fire is easy to occur, the temperature sensor monitors the temperature conditions of the fast charging circuit and the slow charging circuit, if the temperature exceeds a certain value, the MCU unit firstly cuts off the connection between the storage battery and the slow charging circuit (or the fast charging circuit) by using the third solid-state relay and the fourth solid-state relay, then cuts off the connection between the commercial power and the slow charging circuit (or the fast charging circuit) by using the first solid-state relay and the second solid-state relay, and when the temperature is reduced to a certain value, the charging is resumed, so as to realize overheat protection; after the charging is finished, the connection between the storage battery and the slow charging path (or the fast charging path) is disconnected, and the connection between the commercial power and the slow charging path (or the fast charging path) is disconnected, so that the storage battery is prevented from being overcharged and damaged.
When the temperature of the charger exceeds a certain value, the MCU unit drives the bomber to alarm (the alarm is closed after 3 s), the temperature abnormality indicator lights are on, and then a user is reminded by a short message through the SIM module; the user can directly edit the specific short message and send the specific short message to the charger, after the charger analyzes, the storage of the short message receiving number can be completed, the short message receiving number is stored in the EEPROM of the MCU unit, other parameters such as the quick charge to a percentage in the hybrid charge mode, whether the charging is in the slow charge mode, whether the local alarm is given, and the like can be modified.
Further, the LED lamp comprises a power supply indicator lamp, a fast charging indicator lamp, a slow charging indicator lamp, a mixed charging indicator lamp and a temperature abnormality indicator lamp, wherein the power supply indicator lamp, the fast charging indicator lamp, the slow charging indicator lamp, the mixed charging indicator lamp and the temperature abnormality indicator lamp are respectively connected with the MCU unit.
Further, the driving circuit adopts a triode amplifying circuit, and has the advantages of simple structure, practicality and low cost.
Further, the MCU unit adopts a singlechip minimum working system and comprises a singlechip, a crystal oscillator circuit and a reset circuit, wherein the crystal oscillator circuit and the reset circuit are respectively connected with the singlechip, and the power management module supplies power for the singlechip.
Compared with the prior art, the invention has the beneficial effects that: (1) the charger has three charging modes: quick charge mode, slow charge mode, mixed charge mode, the user can select corresponding mode according to own demand. (2) And meanwhile, the charging time, the charging mode, the charging temperature and other charging states are displayed on a display screen. (3) If the temperature exceeds a certain value, the connection between the storage battery and the slow charging circuit (or the fast charging circuit) is firstly cut off by a solid-state relay, then the connection between the commercial power and the slow charging circuit (or the fast charging circuit) is cut off by the solid-state relay, and the charging is resumed when the temperature is reduced to a certain value. (4) After the charging is finished, the connection between the storage battery and the slow charging path (or the fast charging path) is disconnected, the connection between the mains supply and the slow charging path (or the fast charging path) is disconnected, the storage battery is prevented from being overcharged, the storage battery is damaged, and a user is reminded through local audible and visual alarm (after 3 seconds of alarm) and a short message. (5) The user can directly edit the specific short message and send the specific short message to the charger, after the charger analyzes, the storage of the short message receiving number can be completed, the short message receiving number is stored in the EEPROM of the MCU unit, other parameters such as the quick charge to a percentage in the hybrid charge mode, whether the charging is in the slow charge mode, whether the local alarm is given, and the like can be modified.
Drawings
Fig. 1 is a schematic diagram of a charger according to the present invention.
Fig. 2 is a schematic diagram of a control circuit structure according to the present invention.
Fig. 3 is a schematic diagram of a charging circuit according to the present invention.
Fig. 4 is a schematic diagram of a circuit structure of a minimum system of an MCU unit according to the present invention.
Fig. 5 is a schematic diagram of a driving circuit structure according to the present invention.
Detailed Description
In order to make the contents of the present invention more apparent, a detailed description of the present invention will be given below with reference to the accompanying drawings. It should be noted that the illustration and description of the components known to those skilled in the art, which are not related to the present invention, have been omitted in the drawings and description for the sake of clarity.
The LED lamp comprises a power supply indicator lamp, a quick charge indicator lamp, a slow charge indicator lamp, a mixed charge indicator lamp and a temperature abnormality indicator lamp, wherein the power supply indicator lamp, the quick charge indicator lamp, the slow charge indicator lamp, the mixed charge indicator lamp and the temperature abnormality indicator lamp are respectively connected with the MCU unit, and the indicator lamps are used for indicating the working state of the charger.
In the above structure, the charger has three charging modes: the charging system comprises a fast charging mode, a slow charging mode and a hybrid charging mode, wherein the hybrid charging mode is that the slow charging is performed when the electric quantity is reached, a user can select a corresponding mode according to own requirements, and a corresponding charging module can be selected only by controlling the first solid state relay or the second solid state relay through the MCU unit.
The MCU unit can display the real-time charging data values of the chargers such as charging time, charging mode, charger temperature and the like on the display screen, and the corresponding LED lamps are lighted to be used for reference of a user to know the charging state of the chargers.
If the temperature of the charger is too high and fire is easy to occur, the temperature sensor monitors the temperature conditions of the fast charging circuit and the slow charging circuit, if the temperature exceeds a certain value, the MCU unit firstly cuts off the connection between the storage battery and the slow charging circuit (or the fast charging circuit) by using the third solid-state relay and the fourth solid-state relay, then cuts off the connection between the commercial power and the slow charging circuit (or the fast charging circuit) by using the first solid-state relay and the second solid-state relay, and when the temperature is reduced to a certain value, the charging is resumed, so as to realize overheat protection; after the charging is finished, the connection between the storage battery and the slow charging path (or the fast charging path) is disconnected, and the connection between the commercial power and the slow charging path (or the fast charging path) is disconnected, so that the storage battery is prevented from being overcharged and damaged.
When the temperature of the charger exceeds a certain value, the MCU unit drives the bomber to alarm (the alarm is closed after 3 s), the temperature abnormality indicator lights are on, and then a user is reminded by a short message through the SIM module; the user can directly edit the specific short message and send the specific short message to the charger, after the charger analyzes, the storage of the short message receiving number can be completed, the short message receiving number is stored in the EEPROM of the MCU unit, other parameters such as the quick charge to a percentage in the hybrid charge mode, whether the charging is in the slow charge mode, whether the local alarm is given, and the like can be modified.
Specifically, the MCU unit adopts a minimum working system of a single chip microcomputer, and comprises the single chip microcomputer, a crystal oscillator circuit and a reset circuit, wherein the crystal oscillator circuit and the reset circuit are respectively connected with the single chip microcomputer, the power management module supplies power to the single chip microcomputer, the minimum system of the MCU unit is shown in fig. 4 and comprises a power supply (VCC 3.3), the single chip microcomputer (STM 32 Fxxx), the crystal oscillator circuit (high-speed external clock circuits (HSL: C20, C21, Y2 and R21) and low-speed external clock circuits LSE: C23, C24 and Y3) and the reset circuit (R22, C22, R23 and S3), and the power supply is connected in parallel with C26, C27 and C28 to achieve good filtering. In the minimum system designed, a 1M resistor R21 is added in a high-speed external clock circuit (HSL), and the resistor R21 is used as impedance matching, so that a driving circuit of a crystal or the crystal is in a better working condition. The reset circuit consists of a key reset part and a power-on reset part, and (1) the power-on reset part: STM32 series singlechips and reset for low level, usually connect a electric capacity (C22) to GND on reset pin NRST, connect a resistance (R22) to VCC again, form RC charge-discharge circuit from this, guarantee that the singlechip has the low level of enough time on NRST foot to reset when powering up, then return to high level and get into normal operating condition. (2) key reset: the key reset is to connect a switch in parallel to the reset capacitor (C22), when the switch is pressed down, the capacitor (C22) is discharged, NRST is also pulled to a low level, and the capacitor (C22) is charged for a period of time, so that the singlechip is reset.
Fig. 5 shows a schematic diagram of a driving circuit, in which a single chip microcomputer outputs a control signal through an I/O port, pulls up through a pull-up resistor (R2), enters a base electrode of a PNP (Q1) through a current limiting resistor (R3), and when the I/O port outputs a low level, the PNP triode (Q1) is turned on to drive a buzzer to sound.
Generally, the charger is provided with a shell for internally arranging a mains supply input interface, a power management module, a solid state relay, a display screen, an MCU unit, a SIM module, a temperature sensor, a driving circuit, a buzzer, an LED lamp, a key, a slow charging circuit, a fast charging circuit, a current detection module and a battery charging interface, wherein the slow charging circuit, the fast charging circuit, the power management module, the current detection module, the SIM module and the like are all in the prior art, and products can be purchased in the market or the circuit structure can be obtained through the existing data.
The invention relates to an intelligent electric power-assisted vehicle charger, which is characterized in that when being manufactured:
the MCU unit adopts an STM32 singlechip of ST company, is specially designed for embedded application with high performance, low cost and low power consumption, and has rich peripheral interfaces.
The buzzer adopts the simplest active buzzer, and the MCU unit directly gives a fixed level to the triode base in the amplifying circuit, so that continuous sounding can be realized.
The display screen adopts a 0.96 inch OLED lamp display screen (12864 liquid crystal screen), is a mode with SPI/IIC interface, a driving chip SSD1306 is integrated in the display screen, and a dot-matrix graph liquid crystal display module of a character library in national standard primary and secondary short bodies is contained in the display screen; the display resolution is 128×64, and 8192 16×16 Chinese characters and 128 16×8 ASCII character sets are built in.
The innovation points of the invention are as follows:
1. the internal parameters of the charger (short message receiving number, mixed charging rate, whether to locally alarm or not, etc.) can be directly modified by sending specific short messages.
2. The charger has two charging circuits and three charging modes, and a user can select according to the situation.
3. The charger has overheat protection function.
4. The charger is full of electricity for local alarm, remote notification and automatic disconnection of the battery and the charger, and automatic disconnection of the mains supply and the charging circuit (fast charging circuit, slow charging circuit).
5. The charger has the functions of accumulating charging time and displaying the charging time in real time, and information such as modes and the like are displayed through a display screen.
Finally, it should be noted that: the above embodiments are intended to illustrate the present invention, not to limit the present invention, and those skilled in the art may still make modifications to the technical solutions set forth in the examples, and any modifications and alterations made to the present invention should also be considered as the scope of the present invention.
Claims (5)
1. The intelligent electric power-assisted vehicle charger is characterized by comprising a mains supply input interface, a power management module, a first solid-state relay, a second solid-state relay, a third solid-state relay, a fourth solid-state relay, a display screen, an MCU unit, a SIM module, a temperature sensor, a driving circuit, a buzzer, an LED lamp, a key, a slow charging circuit, a fast charging circuit, a current detection module and a storage battery charging interface; the utility power input interface is connected with the first contact of the load end of the first solid-state relay and the second solid-state relay, the second contact of the load end of the first solid-state relay is connected with the input end of the slow charging circuit, the second contact of the load end of the second solid-state relay is connected with the input end of the fast charging circuit, the output end of the slow charging circuit and the output end of the fast charging circuit are simultaneously connected with the first contact of the load end of the third solid-state relay, the second contact of the load end of the third solid-state relay is connected with the first end of the battery charging interface, the grounding end of the slow charging circuit and the grounding end of the fast charging circuit are simultaneously connected with the first contact of the load end of the fourth solid-state relay, the second contact of the load end of the fourth solid-state relay is connected with the second end of the battery charging interface, the utility power input interface is connected with the input end of the power management module, the power management module is configured to convert commercial power into direct current for output, the output end of the power management module is connected with the MCU unit, a display screen, a SIM module, a temperature sensor, a driving circuit, an LED lamp and a current detection module for supplying power, the temperature sensor is configured to collect temperature feedback in the charger and feed back the temperature feedback to the MCU unit, the display screen is configured to display real-time charging data value of the charger, the SIM module is configured to send information to the outside, the LED lamp is configured to indicate working state of the charger, the display screen, the SIM module, the temperature sensor, the driving circuit, the LED lamp and the current detection module are connected with the MCU unit, the driving circuit is connected with the buzzer for driving the buzzer, the keys are connected with the MCU unit, and the output end of the power management module is respectively connected with the first solid state relay, the second solid state relay, the third solid state relay, the first contact of the control end of the fourth solid-state relay is connected, the second contacts of the control ends of the first solid-state relay, the second solid-state relay, the third solid-state relay and the fourth solid-state relay are respectively connected with the MCU unit, and the current detection module is connected in a circuit of a battery charging interface to detect charging current and feed the charging current back to the MCU unit;
the temperature sensor monitors the temperature conditions of the fast charging circuit and the slow charging circuit, if the temperature exceeds a set value, the MCU unit firstly cuts off the connection between the storage battery and the slow charging circuit or the fast charging circuit by using the third solid state relay and the fourth solid state relay, then cuts off the connection between the commercial power and the slow charging circuit or the fast charging circuit by using the first solid state relay and the second solid state relay, and resumes charging when the temperature is reduced to the set value so as to realize overheat protection; after the charging is completed, the connection between the storage battery and the slow charging circuit or the fast charging circuit is disconnected, and then the connection between the commercial power and the slow charging circuit or the fast charging circuit is disconnected, so that the storage battery is prevented from being overcharged and damaged.
2. The intelligent electric bicycle charger of claim 1, wherein the LED lamp comprises a power indicator, a fast charge indicator, a slow charge indicator, a hybrid charge indicator and a temperature anomaly indicator, which are connected to the MCU unit respectively.
3. An intelligent electric power assisted vehicle charger as defined in claim 1, wherein said drive circuit employs a triode amplification circuit.
4. The intelligent electric bicycle charger of claim 1, wherein the MCU unit adopts a single-chip microcomputer minimum working system, and comprises a single-chip microcomputer, a crystal oscillator circuit and a reset circuit, wherein the crystal oscillator circuit and the reset circuit are respectively connected with the single-chip microcomputer, and the power management module supplies power to the single-chip microcomputer.
5. The intelligent electric bicycle charger of claim 1, wherein the current detection module employs a current acquisition module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710748808.1A CN107512185B (en) | 2017-08-28 | 2017-08-28 | Intelligent electric power-assisted vehicle charger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710748808.1A CN107512185B (en) | 2017-08-28 | 2017-08-28 | Intelligent electric power-assisted vehicle charger |
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| CN107512185A CN107512185A (en) | 2017-12-26 |
| CN107512185B true CN107512185B (en) | 2023-05-23 |
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|---|---|---|---|---|
| CN112428836B (en) * | 2020-11-06 | 2022-08-16 | 广州小鹏汽车科技有限公司 | Charging system, control method of charging system and electric automobile |
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| CN107512185A (en) | 2017-12-26 |
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