CN116760151B - Charger interface circuit with wide output voltage range - Google Patents
Charger interface circuit with wide output voltage range Download PDFInfo
- Publication number
- CN116760151B CN116760151B CN202311020050.1A CN202311020050A CN116760151B CN 116760151 B CN116760151 B CN 116760151B CN 202311020050 A CN202311020050 A CN 202311020050A CN 116760151 B CN116760151 B CN 116760151B
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- Prior art keywords
- circuit
- pin
- battery
- interface
- sampling
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- 238000005070 sampling Methods 0.000 claims abstract description 74
- 238000004804 winding Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
Classifications
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a charger interface circuit with a wide output voltage range, which comprises a long pin interface, a short pin interface, an interface processing circuit and a main power circuit, wherein the long pin interface is provided with four pins, the interface processing circuit comprises an ADC sampling circuit and an anti-backflow circuit, the long pin interface is connected with the ADC sampling circuit for voltage sampling, a singlechip can judge whether a battery is connected according to sampled voltage data, and the main power circuit and the interface processing circuit simultaneously carry out battery on-site judgment and voltage sampling, so that the charger interface circuit has the advantages of simple result, easy production, low cost and convenient popularization.
Description
Technical Field
The invention relates to the technical field of charging switch power supplies, in particular to a long and short needle of an interface and a sampling signal processing circuit.
Background
With the progress of lithium battery products and the demand of new energy markets, engineering vehicles (forklift, etc.), unmanned vehicles, unmanned planes, robots, etc. are put into new energy markets in addition to EVs. The requirements on running power and endurance time are larger and larger, and the requirements on battery capacity are larger and larger, so that the requirements on a high-power charger power supply are larger and larger; meanwhile, the requirements on the charger are higher and higher, and the charger has the characteristics of wide input and output voltage range, high power density, high power factor, small harmonic wave, high efficiency and the like. The wide output voltage range is characterized in that the charger is required to have the capability of being compatible with batteries with different voltage specifications, so that new challenges are brought to the design of a circuit in the output circuit of the charger how to simply and accurately judge whether the battery is connected or not and how to accurately sample the battery voltage signal to output correct charging voltage.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a charger interface circuit with a wide output voltage range that can be accurately measured and is simple in structure.
The utility model provides a wide output voltage range charger interface circuit, includes long and short needle interface, interface processing circuit, main power circuit, long and short needle interface includes four pins, contain ADC sampling circuit and prevent flowing backward circuit in the interface processing circuit, long and short needle interface connection has ADC sampling circuit to carry out voltage sampling, and the singlechip of circuit internal connection judges whether the battery inserts according to the voltage data of sampling, main power circuit with interface processing circuit carries out battery in-place judgement and voltage sampling simultaneously.
Further, the long needle in the long needle interface is provided with two pins, namely a first pin and a fourth pin, the short needle is also provided with two pins, namely a second pin and a third pin, the first pin and the second pin are connected with a positive output port of a power supply together, the third pin and the fourth pin are connected with a negative output port of the power supply together, the positive electrode of the external battery is connected with the first pin and the second pin, and the negative electrode of the external battery is connected with the third pin and the fourth pin.
Further, the ADC sampling circuit comprises three resistors and a capacitor, wherein three resistors are connected in a T shape, the capacitor is connected in parallel between two resistors connected in parallel in the three resistors to form a square structure, when an external battery is connected, the singlechip samples the battery voltage, and the anti-backflow circuit prevents the power output voltage from flowing backwards to the ADC sampling circuit during charging through the diode effect, so that the sampling is prevented from being influenced.
Further, three relays RLY3, RLY4 and RLY5 are provided in the main power circuit, RLY3 in the three relays are in a closed state, RLY4 and RLY5 in the three relays are in an open state, the three relays adjust various switch states according to the sampling result of the ADC sampling circuit, and the main power circuit has various working modes and corresponds to various states of the three relays.
Further, when the battery is not connected, the output of the first pin is suspended, the sampling value of the ADC sampling circuit is zero, when the battery is connected, the long and short pin interface is connected with the positive electrode of the external battery, the sampling value of the ADC sampling circuit is not zero, and the singlechip outputs proper voltage to charge the battery according to the sampling value.
Further, when the ADC sampling value is lower, the singlechip controls the relay RLY3 to be turned into an off state from a long-time closing state, the relay RLY4 and the relay RLY5 are turned into a closed state from an off state, the output winding is connected in parallel to charge the battery, and when the ADC sampling value is higher, the relay RLY4 and the relay RLY5 are disconnected, the relay RLY3 is closed, and the output winding is connected in series to charge the battery.
Above-mentioned wide output voltage range charger interface circuit, including long and short needle interface, interface processing circuit, main power circuit, long and short needle interface contains four pins, is long needle interface first pin and fourth pin respectively, short needle interface second pin and third pin, contain ADC sampling circuit and anti-backflow circuit in the interface processing circuit, long and short needle interface connection has ADC sampling circuit to carry out voltage sampling, and circuit internal connection's singlechip judges whether the battery inserts according to the voltage data of sampling, main power circuit with interface processing circuit carries out battery judgement and voltage sampling in place simultaneously, simple structure, easily production, low cost, the facilitate promotion.
Drawings
FIG. 1 is a schematic diagram of an interface processing circuit of a charger interface circuit with a wide output voltage range according to an embodiment of the present invention
Fig. 2 is a schematic diagram of a main power circuit of a charger interface circuit with a wide output voltage range according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific embodiments and drawings.
Referring to fig. 1-2, an interface circuit of a charger with a wide output voltage range provided by an embodiment of the invention includes a long-short pin interface, an interface processing circuit and a main power circuit, wherein the long-short pin interface includes four pins, the interface processing circuit includes an ADC sampling circuit and an anti-backflow circuit, the long-short pin interface is connected with the ADC sampling circuit to sample voltages, a singlechip connected with the circuit is used for judging whether a battery is connected according to sampled voltage data, and the main power circuit and the interface processing circuit are used for judging the battery in place and sampling voltages at the same time.
Specifically, the long needle has two pins in the long needle interface, is first pin and fourth pin respectively, and the short needle also has two pins, is second pin and third pin respectively, and first pin and second pin are the positive output port of connecting the power together, and third pin and fourth pin are the negative output port of connecting the power together, and first pin and second pin are connected to the positive pole of external battery, and third pin and fourth pin are connected to the negative pole of external battery, simple structure.
Specifically, the ADC sampling circuit comprises three resistors and a capacitor, wherein three resistors are connected in a T shape, the capacitor is connected in parallel between two resistors connected in parallel in the three resistors to form a square structure, when an external battery is connected, the singlechip samples the battery voltage, and the anti-backflow circuit prevents the power output voltage from flowing backwards to the ADC sampling circuit during charging through the action of a diode, so that the sampling is prevented from being influenced.
Specifically, three relays RLY3, RLY4 and RLY5 are arranged in the main power circuit, RLY3 in the relays is in a closed state, RLY4 and RLY5 in the relays are in an open state, the three relays adjust various switch states according to sampling results of the ADC sampling circuit, the main power circuit has various working modes and corresponds to various states of the three relays, for example, when a circuit sampling value is low, the relay RLY3 is opened, the relay RLY4 and the relay RLY5 are closed, two output windings are changed into a parallel mode to charge a battery, when the circuit sampling value is high, the relay RLY3 is closed, the relay RLY4 and the relay RLY5 are opened, and the two output windings are changed into a series mode to charge the battery.
Specifically, when the battery is not connected, the output of the first pin is suspended, the sampling value of the ADC sampling circuit is zero, when the battery is connected, the long and short needle interface is connected with the positive electrode of the external battery, the sampling value of the ADC sampling circuit is not zero, and the singlechip outputs proper voltage to charge the battery according to the sampling value.
Specifically, when the ADC sampling value is lower, the singlechip controls the relay RLY3 to be turned into an off state from a long-time closing state, the relay RLY4 and the relay RLY5 are turned into a closed state from an off state, the output winding is connected in parallel to charge the battery, and when the ADC sampling value is higher, the relay RLY4 and the relay RLY5 are disconnected, the relay RLY3 is closed, and the output winding is connected in series to charge the battery.
As shown in fig. 1-2, the long and short needle interface has four pins, namely a first pin, a second pin, a third pin and a fourth pin, wherein the third pin and the fourth pin are connected with the cathode of an external battery, the first pin and the second pin are connected with the anode of the external battery, three resistors and a capacitor form an ADC sampling circuit, the three resistors are connected in a T shape, the long and short needle interface is connected with the ADC sampling circuit for voltage sampling, the three relays rli 3 are closed, the rli 4 and the rli 5 are disconnected, and the main power circuit and the interface processing circuit can realize battery on-site judgment and voltage sampling simultaneously.
The charger interface circuit with wide output voltage range comprises a long pin interface, an interface processing circuit and a main power circuit, wherein the long pin interface comprises four pins, namely a first pin and a fourth pin of the long pin interface, a second pin and a third pin of the short pin interface, the first pin and the second pin are connected with a positive output port of a power supply and an anode of an external battery together, the third pin and the fourth pin are connected with a negative output port of the power supply and a cathode of the external battery together, the interface processing circuit comprises an ADC sampling circuit and an anti-backflow circuit, the ADC sampling circuit comprises three resistors and a capacitor, the three resistors are connected in a T shape, the capacitor is connected between the two resistors in parallel to form a square shape, when the battery is connected, the singlechip can sample the voltage of the battery, the anti-backflow circuit prevents the backward flow of the power supply output voltage to the ADC sampling circuit during charging through the diode effect, so as to prevent the influence on sampling, the long and short needle interface is connected with the ADC sampling circuit to perform voltage sampling, the singlechip can judge whether a battery is connected according to the sampled voltage data, three relays RLY3, RLY4 and RLY5 are arranged in the main power circuit, the three relays RLY3 are in a closed state, the RLY4 and RLY5 are in an open state, the three relays perform various switch states according to the sampling result of the ADC sampling circuit, the main power circuit has various working modes and corresponds to various states of the three relays, for example, when the circuit sampling value is low, the relay RLY3 is opened, the relay RLY4 and the relay RLY5 are closed, two output windings become into a parallel mode to charge the battery, when the circuit sampling value is high, the relay RLY3 is closed, the relay RLY4 and the relay RLY5 are disconnected, the two output windings are changed into a series mode to charge the battery, and the main power circuit and the interface processing circuit realize battery on-site judgment and voltage sampling simultaneously, so that the device is simple in structure, easy to produce, low in cost and convenient to popularize.
It should be noted that the present invention is not limited to the above embodiments, and those skilled in the art can make other changes according to the inventive spirit of the present invention, and these changes according to the inventive spirit of the present invention should be included in the scope of the present invention as claimed.
Claims (4)
1. The utility model provides a wide output voltage range charger interface circuit, its characterized in that includes long and short needle interface, interface processing circuit, main power circuit, long and short needle interface includes four pins, contain ADC sampling circuit and anti-backflow circuit in the interface processing circuit, long and short needle interface connection has ADC sampling circuit to carry out voltage sampling, and the singlechip of circuit internal connection judges whether the battery inserts according to the voltage data of sampling, main power circuit with interface processing circuit carries out battery in-place judgement and voltage sampling simultaneously, ADC sampling circuit includes three resistance and a electric capacity, wherein three the resistance is T shape connection, the electric capacity is parallelly connected three two resistances in parallel connection form square structure in the resistance between, when having the external battery to connect, the singlechip is sampled battery voltage, anti-backflow circuit is through diode effect preventing during charging the power output voltage to ADC sampling circuit, and then prevent to influence the sampling, three relay RLY3, RLY4, RLY5 in the main power circuit, RLY3 in the parallel connection state with two of two and three switching devices RLY4, RLY5 in the parallel connection respectively with two rectifying circuit and two rectifying circuit groups respectively, two rectifying circuit and three rectifying circuit 3 in the parallel connection respectively with each other winding in the two rectifying circuit and 3 in the parallel connection respectively.
2. The wide output voltage range charger interface circuit of claim 1, wherein the long pin and the short pin have two pins, respectively, a first pin and a fourth pin, and the short pin has two pins, respectively, a second pin and a third pin, the first pin and the second pin are connected together to a positive output port of a power supply, the third pin and the fourth pin are connected together to a negative output port of the power supply, a positive electrode of an external battery is connected to the first pin and the second pin, and a negative electrode of the external battery is connected to the third pin and the fourth pin.
3. The charger interface circuit of claim 2, wherein the first pin output is suspended when the battery is not connected, the ADC sampling circuit sampling value is zero, the long short pin interface is connected with the positive electrode of the external battery when the battery is connected, the ADC sampling circuit sampling value is not zero, and the single chip microcomputer outputs a suitable voltage according to the sampling value to charge the battery.
4. The wide output voltage range charger interface circuit of claim 1, wherein when the ADC sampling value is low, the singlechip controls the relay RLY3 to be turned off from long-time closing, the relay RLY4 and the relay RLY5 are turned on from the off state, the output windings are connected in parallel to charge the battery, and when the ADC sampling value is high, the relay RLY4 and the relay RLY5 are opened, the relay RLY3 is closed, and the output windings are connected in series to charge the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311020050.1A CN116760151B (en) | 2023-08-14 | 2023-08-14 | Charger interface circuit with wide output voltage range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311020050.1A CN116760151B (en) | 2023-08-14 | 2023-08-14 | Charger interface circuit with wide output voltage range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116760151A CN116760151A (en) | 2023-09-15 |
| CN116760151B true CN116760151B (en) | 2024-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311020050.1A Active CN116760151B (en) | 2023-08-14 | 2023-08-14 | Charger interface circuit with wide output voltage range |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224452A (en) * | 2018-03-02 | 2019-09-10 | 天津九九电子有限公司 | A kind of wide pressure output automatic identification charger |
| CN211958806U (en) * | 2020-03-31 | 2020-11-17 | 深圳市超力源科技有限公司 | Automatic activation circuit of charger |
| CN116470617A (en) * | 2023-04-24 | 2023-07-21 | 天津云圣智能科技有限责任公司 | Unmanned aerial vehicle power supply unit and unmanned aerial vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4333777B2 (en) * | 2007-05-22 | 2009-09-16 | ソニー株式会社 | Charger |
| CN103219782A (en) * | 2013-05-02 | 2013-07-24 | 安伏（苏州）汽车电源科技有限公司 | High-power battery charging device capable of preventing reverse current charging and battery reversal |
| CN105098856A (en) * | 2014-05-14 | 2015-11-25 | 朱运峰 | Charger having variable output voltage control circuit |
| CN115117976A (en) * | 2022-07-25 | 2022-09-27 | 珠海格力电器股份有限公司 | Charging interface circuit of vehicle |
-
2023
- 2023-08-14 CN CN202311020050.1A patent/CN116760151B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224452A (en) * | 2018-03-02 | 2019-09-10 | 天津九九电子有限公司 | A kind of wide pressure output automatic identification charger |
| CN211958806U (en) * | 2020-03-31 | 2020-11-17 | 深圳市超力源科技有限公司 | Automatic activation circuit of charger |
| CN116470617A (en) * | 2023-04-24 | 2023-07-21 | 天津云圣智能科技有限责任公司 | Unmanned aerial vehicle power supply unit and unmanned aerial vehicle |
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| Publication number | Publication date |
|---|---|
| CN116760151A (en) | 2023-09-15 |
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