CN212569091U - Intelligent detection battery reverse connection of charger - Google Patents
Intelligent detection battery reverse connection of charger Download PDFInfo
- Publication number
- CN212569091U CN212569091U CN202020498222.1U CN202020498222U CN212569091U CN 212569091 U CN212569091 U CN 212569091U CN 202020498222 U CN202020498222 U CN 202020498222U CN 212569091 U CN212569091 U CN 212569091U
- Authority
- CN
- China
- Prior art keywords
- resistor
- battery
- diode
- relay
- charger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to the technical field of chargers, in particular to a charger intellectual detection system battery reversal, including little control chip U8, the battery reversal detection circuitry, battery voltage detection circuitry, relay drive circuit, battery B1, relay K1 and charger power output DC, battery reversal detection circuitry includes resistance R1, resistance R2, diode D1 and diode D2, resistance R1 connects parallelly connected relay and battery voltage detection circuitry, R1 is connected with diode D2 negative pole, diode D2's positive pole is connected with diode D1's negative pole, diode D2's positive pole connects pin7 of little control chip U8 simultaneously, resistance R2 connects on little control chip U8's pin7 and pin 10, resistance R2 and little control chip U8's pin 10 connect the power jointly, the utility model discloses an increase battery reversal detection circuitry and avoided the charger Mosfet short circuit failure that charges, avoid the battery to form very big electric current, improve the safety in utilization.
Description
Technical Field
The utility model relates to a charger technical field, concretely relates to charger intellectual detection system battery joins conversely.
Background
With the rapid development of low-carbon ecological economy, electric vehicles, electric tools, new energy vehicles and other industries in China, the application range of lithium batteries is more and more extensive, the application interfaces of the batteries are various, the positive and negative connection of output lines does not form a uniform specification, and a customer cannot be guaranteed to be charged by matching a specified battery with a specified charger in the use process of a terminal market, so that the phenomenon of reverse connection charging of the batteries is greatly possible. Once the battery is charged in reverse, the charger is rendered ineffective. If the battery is reversely connected, the charger charging Mosfet short circuit fails, so that the output port of the charger is short-circuited, the battery is short-circuited, a large current is formed, and disastrous results can be caused due to the heat effect of the current.
Some methods for preventing reverse connection in the current market solve the problem from a battery protection board, for example, a charging interface is added with a reverse connection prevention diode, and the voltage drop of the diode necessarily brings loss, so that the method can only be applied to a small-capacity battery; some of the problems are solved from a charger, such as a charger reverse parallel diode, and a fuse is connected in series with an output line of the charger, when a battery is reversely connected, the fuse is blown, so that the trouble of replacing the fuse is brought.
SUMMERY OF THE UTILITY MODEL
Solves the technical problem
Aiming at the defects in the prior art, the utility model provides a charger intelligent detection battery reverse connection, which can effectively solve the defects of the reverse connection prevention method in the prior art, and the charging port and the reverse connection prevention diode can only be suitable for a small-capacity battery; and the charger is reversely connected with the diode fuse, so that the replacement is troublesome.
Technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
the utility model provides a charger intellectual detection system battery joins conversely, includes little control chip U8, battery joins conversely detection circuitry, battery voltage detection circuitry, relay drive circuit, battery B1, relay K1 and charger power output DC, battery joins conversely detection circuitry includes resistance R1, resistance R2, diode D1 and diode D2, wherein, parallelly connected relay and battery voltage detection circuitry are connected to resistance R1's one end, the other end of R1 is connected with diode D2 negative pole, diode D2's positive pole is connected with diode D1's negative pole, diode D2's positive pole is connected on little control chip U8's pin7 simultaneously, little control chip U8's pin7 and pin 10 that resistance R2 connects, resistance R2 and little control chip U8's pin 10 connect the power jointly, diode D1's positive pole connects battery voltage detection circuitry and charger power output DC negative pole simultaneously.
Furthermore, the battery voltage detection circuit comprises a resistor R5, a resistor R6 and a zener diode ZD1, wherein one end of the resistor R5 is connected with the resistor R1 and the battery B1 respectively, the other end of the resistor R5 is commonly connected with a pin of the micro-control chip U8, the resistor R6 and the cathode of the zener diode ZD1, and the other end of the resistor R6 and the anode of the zener diode ZD1 are connected with the cathode of the charger power output DC and the battery B1.
Furthermore, the relay driving circuit comprises a resistor R3, a resistor R4 and a transistor Q1, wherein the resistor R3 is connected to a pin17 of the micro-control chip U8, the other end of the resistor R3 is connected to a resistor R4 and a base electrode of the transistor Q1, a collector electrode of the transistor Q1 is connected to the relay K1, a pin 9 of the micro-control chip U8 is connected to the other end of the resistor R4 and an emitter electrode of the transistor Q1, and meanwhile, the pin 9 of the micro-control chip U8 is grounded.
Furthermore, a diode 3 is connected between the contact 3 and the contact 1 of the relay K1, the contact 3 of the relay K1 is connected with the anode of the diode, the contact 3 of the relay K1 is connected with the collector of the triode Q1, and the contact 5 and the contact 4 of the relay K1 are respectively connected with the anode of the charger power output DC and the other ends of the resistor R1 and the resistor R5.
Furthermore, the relay K1 is a HF3FA relay, and the contact 1 thereof is connected to 24V operating voltage.
Advantageous effects
Adopt the utility model provides a technical scheme compares with known public technique, has following beneficial effect:
the utility model discloses increase the battery and connect the detection circuitry conversely in the primary circuit, the original state charger keeps normally open with the battery, only when the battery inserts correctly, the charger just opens and charges, detect the state of load battery at first, if the battery inserts correctly, the charger major loop switch closes, charger output voltage charges the battery; if the battery is reversely connected, the main circuit switch of the charger keeps disconnected without output, a reverse connection detection circuit is designed to work only when the battery is under negative pressure according to the fact that the battery is a voltage source, whether the battery is reversely connected or not can be detected, the phenomenon that the charger charges a Mosfet short circuit and fails is avoided, the battery is prevented from forming a large current, and the use safety is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of a control principle line frame of the present invention;
FIG. 2 is a schematic circuit diagram of the present invention;
fig. 3 is a schematic view of the working process of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Examples
The charger of this embodiment detects the battery and connects conversely, refer to fig. 1-3: the battery reverse connection detection circuit comprises a resistor R1, a resistor R2, a diode D1 and a diode D2, wherein one end of the resistor R1 is connected with the parallel relay and the battery voltage detection circuit, the other end of the resistor R1 is connected with the negative electrode of a diode D2, the positive electrode of the diode D2 is connected with the negative electrode of the diode D1, the positive electrode of the diode D2 is connected with the pin7 of the micro control chip U8, the pin7 and the pin 10 of the micro control chip U8 are connected with a resistor R2, the resistor R2 and the pin 10 of the micro control chip U8 are connected with a power supply together, and the positive electrode of the diode D1 is connected with the battery voltage detection circuit and the negative electrode of the charger power output DC simultaneously.
Wherein, the battery voltage detection circuit comprises a resistor R5, a resistor R6 and a zener diode ZD1, wherein one end of the resistor R5 is respectively connected with a resistor R1 and a battery B1, the other end of the resistor R5 is commonly connected with a pin of a micro-control chip U8, a resistor R6 and a cathode of the zener diode ZD1, the other end of a resistor R6 and an anode of the zener diode ZD1 are connected with a negative pole of a charger power output DC and a battery B1, the relay driving circuit comprises a resistor R3, a resistor R4 and a triode Q1, wherein the resistor R1 is connected with a pin17 of the micro-control chip U1, the other end of the resistor R1 is connected with a base of the resistor R1 and a base of the triode Q1, a collector of the triode Q1 is connected with a relay K1, the other end of the pin 9 of the micro-control chip U1 is connected with the emitter of the resistor R1 and the triode Q1, meanwhile, the pin 9, and a contact 3 of the relay K1 is connected with the anode of the diode, a contact 3 of the relay K1 is connected with a collector of the triode Q1, a contact 5 and a contact 4 of the relay K1 are respectively connected with the anode of the charger power output DC, the other end of the resistor R1 and the other end of the resistor R5, the relay K1 is an HF3FA relay, and a contact 1 of the relay K1 is connected with 24V working voltage.
The working principle is as follows: when the battery B1 is reversely connected to the chargers V + and V-, the battery B1 forms a loop through the diode D1, the diode D2 and the resistor R1, the Pin7 voltage of the micro-control chip U8 is clamped to be-0.6V, a low level is detected, the Pin19 of the micro-control chip U8 cannot detect the voltage (the voltage cannot be detected by the battery in the reverse connection mode), the Pin17 of the micro-control chip U8 outputs the low level, and the relay K1 is kept normally open and cannot be charged.
When the battery B1 is not connected, the Pin7 of the micro-control chip U8 is at a high level, the Pin19 of the micro-control chip U8 cannot detect the voltage, the Pin17 of the micro-control chip U8 outputs a low level, the relay K1 is kept normally open, and the output ports V + and V-of the charger do not output the voltage.
When the battery B1 is normally connected to the output ports V + and V-of the charger, the Pin7 of the micro-control chip U8 is at a high level, the Pin19 of the micro-control chip U8 detects the voltage of the battery, the Pin17 of the micro-control chip U8 outputs the high level, the relay K1 is closed through the resistor R3 and the triode Q1, the charger power output DC charges the battery B1 normally, the short circuit failure of the charger charging Mosfet is avoided, the battery is prevented from forming a large current, and the use safety is improved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. The utility model provides a charger intellectual detection system battery joins conversely, includes little control chip U8, battery joining conversely detection circuitry, battery voltage detection circuitry, relay drive circuit, battery B1, relay K1 and charger power output DC, its characterized in that: the battery reverse connection detection circuit comprises a resistor R1, a resistor R2, a diode D1 and a diode D2, wherein one end of a resistor R1 is connected with a relay and a battery voltage detection circuit which are connected in parallel, the other end of the resistor R1 is connected with the negative electrode of the diode D2, the positive electrode of the diode D2 is connected with the negative electrode of the diode D1, the positive electrode of the diode D2 is connected with a pin7 of a micro-control chip U8, the pin7 and the pin 10 of the micro-control chip U8 connected with the resistor R2, the resistor R2 and the pin 10 of the micro-control chip U8 are connected with a power supply, and the positive electrode of the diode D1 is connected with the battery voltage detection circuit and the DC negative electrode of the.
2. The reverse connection of the battery of the intelligent charger detection of claim 1, wherein the battery voltage detection circuit comprises a resistor R5, a resistor R6 and a zener diode ZD1, wherein one end of the resistor R5 is respectively connected with the resistor R1 and the battery B1, the other end of the resistor R5 is commonly connected with a pin of the micro-control chip U8, the resistor R6 and the cathode of the zener diode ZD1, and the other end of the resistor R6 and the anode of the zener diode ZD1 are connected with the cathode of the charger power output DC and the battery B1.
3. The intelligent detection battery reverse connection of the charger as claimed in claim 1, wherein the relay driving circuit comprises a resistor R3, a resistor R4 and a transistor Q1, wherein the resistor R3 is connected to a pin17 of the micro control chip U8, the other end of the resistor R3 is connected to a resistor R4 and a base of the transistor Q1, a collector of the transistor Q1 is connected to the relay K1, a pin 9 of the micro control chip U8 is connected to the other end of the resistor R4 and an emitter of the transistor Q1, and meanwhile, the pin 9 of the micro control chip U8 is connected to the ground.
4. The reverse connection of the charger intelligent detection battery as claimed in claim 1, wherein a diode 3 is connected between the contact 3 and the contact 1 of the relay K1, the contact 3 of the relay K1 is connected with the anode of the diode, the contact 3 of the relay K1 is connected with the collector of the triode Q1, and the contact 5 and the contact 4 of the relay K1 are respectively connected with the anode of the charger power output DC and the other ends of the resistor R1 and the resistor R5.
5. The intelligent detection battery reversal connection of the charger according to claim 1, characterized in that the relay K1 is a HF3FA relay, and the contact 1 thereof is connected to 24V working voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020498222.1U CN212569091U (en) | 2020-04-07 | 2020-04-07 | Intelligent detection battery reverse connection of charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020498222.1U CN212569091U (en) | 2020-04-07 | 2020-04-07 | Intelligent detection battery reverse connection of charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212569091U true CN212569091U (en) | 2021-02-19 |
Family
ID=74617750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020498222.1U Active CN212569091U (en) | 2020-04-07 | 2020-04-07 | Intelligent detection battery reverse connection of charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212569091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114640163A (en) * | 2022-05-18 | 2022-06-17 | 广东高斯宝电气技术有限公司 | Interface circuit for parallel operation of direct-current power supply and battery |
-
2020
- 2020-04-07 CN CN202020498222.1U patent/CN212569091U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114640163A (en) * | 2022-05-18 | 2022-06-17 | 广东高斯宝电气技术有限公司 | Interface circuit for parallel operation of direct-current power supply and battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103700901B (en) | A kind of multisection type intelligent charging method | |
| CN205753523U (en) | A kind of energy-storage battery group charge and discharge control and detection device | |
| CN108680793A (en) | A kind of pure electric automobile insulating resistor detecting circuit and its detection method | |
| CN102097850B (en) | Method and device for controlling multiple safety protection and energy-saving charging | |
| WO2017020782A1 (en) | Battery charging and discharging control circuit and battery charging and discharging system | |
| CN212569091U (en) | Intelligent detection battery reverse connection of charger | |
| CN110289591A (en) | The anti-sparking control circuit of power battery | |
| EP4199288A1 (en) | Anti-reverse connection protection circuit and method, and electrochemical apparatus and energy storage system | |
| WO2021258366A1 (en) | Control circuit, battery management system and electrochemical device | |
| CN211296590U (en) | Voltage-multiplying rectifier converter of switching power supply | |
| CN203339676U (en) | Reverse-connection and short-circuit protection circuit for batteries | |
| CN206564464U (en) | A kind of current foldback circuit without sample resistance | |
| CN212332422U (en) | Thing networking charging station with relay adhesion detects function | |
| CN100349349C (en) | AC inputting high-voltage protector | |
| CN105322499B (en) | A kind of short-circuit protection circuit abnormal based on power source loads | |
| CN204430525U (en) | The striking detection of electric arc welding equipment and push current control circuit | |
| CN210724292U (en) | Lithium battery charger with multi-mode charging function | |
| CN207218305U (en) | Short-circuit protection circuit and battery charger | |
| CN106125808A (en) | A kind of feedback circuit of Control load condition | |
| CN207265734U (en) | A kind of optional rolling screen door AC motor control of stand-by power supply | |
| CN217984877U (en) | Combined inverter device | |
| CN201656451U (en) | Protective circuit for charger battery | |
| CN205595850U (en) | Input voltage excessive pressure and undervoltage protection circuit of charger | |
| CN205283194U (en) | Battery management system's linear power supply | |
| CN217010389U (en) | Charging circuit capable of identifying and distinguishing reverse connection and short circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220601 Address after: 516000 No.8, Huifeng 7th Road, Huihuan street, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee after: Huizhou chaoliyuan Technology Co.,Ltd. Address before: 518104 3rd floor, building 2, block B, Sixth Industrial Zone, Gonghe community, 9th floor, building J, phase III, Licheng science and Technology Industrial Park, Gonghe community, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN CHAOLIYUAN TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |