CN213754057U - Intelligent charger with wireless communication function - Google Patents
Intelligent charger with wireless communication function Download PDFInfo
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- CN213754057U CN213754057U CN202022817291.7U CN202022817291U CN213754057U CN 213754057 U CN213754057 U CN 213754057U CN 202022817291 U CN202022817291 U CN 202022817291U CN 213754057 U CN213754057 U CN 213754057U
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- charger
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Abstract
The utility model relates to a take intelligent charger of wireless communication function, including MCU and the power, wireless communication chip, the electric current sampling unit of being connected with MCU respectively, wireless communication chip connects the antenna, and electric current sampling unit connects the power and the interface that charges. The utility model discloses the embedded wireless communication module of charger is connected through the mechanism of shaking hands with the battery of same embedded wireless communication module, and the voltage of battery is acquireed in the preceding communication before charging, and the temperature, the electric current, the capacity, the health, according to these information charger reach an optimal charge mode for the battery charges, reach fast, safety, extension battery life's purpose.
Description
Technical Field
The utility model belongs to the lithium cell field relates to the charger, especially a take intelligent charger of wireless communication function.
Background
At present, lithium battery application products such as electric bicycles, low-speed electric vehicles and electric tools, when charging, most of chargers that use are charging ends that directly output charging voltage to load to the battery, use constant current constant voltage to directly charge, such methods have a lot of problems:
1. with the wrong charger, the charger voltage and the battery pack voltage do not match, for example: 48V charger for 36V battery
2. The state of health (SOH) of the battery pack cannot be detected, and thus the charging strategy cannot be optimized according to different states of health of the battery.
3. The charging process cannot monitor the state of the lithium battery, for example: temperature, voltage of single string battery, etc
The above-mentioned several problems all bring influence to the use safety and the life of the lithium battery, because the charge management of the lithium battery is crucial to the use of the lithium battery, if the charge management is needed, more battery information needs to be read by establishing communication with the bms (battery management system) during the charge, but the existing charger outputs two wires to connect the positive and negative charging poles of the battery, and cannot realize the communication, so we design a charger with a wireless communication function, establish wireless communication with the same bms with the wireless function, and read the battery data, so as to realize the intelligent charge management of the battery.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a take intelligent charger of wireless communication function, reach fast, safety, extension battery life's purpose.
The utility model provides a technical scheme that technical problem adopted is:
the utility model provides a take intelligent charger of wireless communication function, includes MCU and the power, wireless communication chip, the electric current sampling unit of being connected with MCU respectively, wireless communication chip connects the antenna, and electric current sampling unit connects the power and the interface that charges.
Moreover, the model of the wireless communication chip and the MCU is SH87F 8801.
The current sampling unit comprises an operational amplifier U9B and a plurality of resistors, wherein one end of a resistor R4 is connected with a currentCheck interface of the MCU, the other end of the resistor R4 is connected with an output end of the operational amplifier U9B, two input ends of the operational amplifier U9B are respectively connected with a resistor R1, a resistor R2 and a resistor R3, a resistor R1 is connected with the negative electrode of the battery, a resistor R2 is connected with a resistor R4, a resistor R3 is connected with one end of a resistor RI2 and the negative electrode of the power supply, and the other end of the resistor RI2 is connected with a resistor R1.
The utility model has the advantages that:
the utility model discloses the embedded wireless communication module of charger is connected through the mechanism of shaking hands with the battery of same embedded wireless communication module, and the voltage of battery is acquireed in the preceding communication before charging, and the temperature, the electric current, the capacity, the health, according to these information charger reach an optimal charge mode for the battery charges, reach fast, safety, extension battery life's purpose.
Drawings
FIG. 1 is a block diagram of the connection between the intelligent charger and the battery;
fig. 2 is a circuit diagram of a current sampling unit.
Detailed Description
The present invention will be described in further detail with reference to specific examples, which are provided for illustrative purposes only, and are not intended to be limiting, and the scope of the present invention should not be limited thereby.
The utility model provides a take intelligent charger of wireless communication function, includes MCU and the power, wireless communication chip, the electric current sampling unit of being connected with MCU respectively, wireless communication chip connects the antenna, and electric current sampling unit connects the power and the interface that charges.
The model of the wireless communication chip and the MCU is SH87F 8801.
The current sampling unit comprises an operational amplifier U9B and a plurality of resistors, one end of a resistor R4 is connected with a currentCheck interface of the MCU, the other end of the resistor R4 is connected with an output end of the operational amplifier U9B, two input ends of the operational amplifier U9B are respectively connected with a resistor R1, a resistor R2 and a resistor R3, a resistor R1 is connected with a battery cathode, a resistor R2 is connected with a resistor R4, a resistor R3 is connected with one end of a resistor RI2 and a power supply cathode, and the other end of the resistor RI2 is connected with a resistor R1.
The charger has two states of a scanning state and a connection state, and the battery has a broadcasting state and a connection state. The battery continuously broadcasts the information of the battery including the battery characteristic code and the unique serial number to the outside periodically when the battery is idle,
the charger can scan broadcast information of all nearby batteries, after the charger is connected with a charging port of the batteries, the charger can provide a small charging current, the batteries can modulate a section of communication information through current cut-off and current start-up, the communication information comprises characteristic codes and unique serial numbers of the batteries, the charger matches the scanned battery information through detecting and analyzing the modulation information of the current, and the charger is in wireless connection with equipment with the same battery characteristic codes and unique serial numbers.
After the charger is successfully connected with the battery in a handshaking way, the voltage, the temperature, the current, the capacity and the health state of the battery can be normally obtained through communication, and the charger obtains an optimal charging mode to charge the battery according to the information, so that the aims of rapidness, safety and prolonging the service life of the battery are fulfilled.
In the charging process, once the current stops or the read voltage and current of the battery are greatly different from the voltage and current detected by the charger through the charging interface, the charger stops charging, and the communication connection is disconnected to enter the handshaking state again.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the spirit of the present invention, and these modifications and improvements are all within the protection scope of the present invention.
Claims (3)
1. The utility model provides a take intelligent charger of wireless communication function which characterized in that: the wireless charging device comprises an MCU, and a power supply, a wireless communication chip and a current sampling unit which are respectively connected with the MCU, wherein the wireless communication chip is connected with an antenna, and the current sampling unit is connected with the power supply and a charging interface.
2. The intelligent charger with wireless communication function as claimed in claim 1, wherein: the model of the wireless communication chip and the MCU is SH87F 8801.
3. The intelligent charger with wireless communication function as claimed in claim 1, wherein: the current sampling unit comprises an operational amplifier U9B and a plurality of resistors, one end of a resistor R4 is connected with a currentCheck interface of the MCU, the other end of the resistor R4 is connected with an output end of the operational amplifier U9B, two input ends of the operational amplifier U9B are respectively connected with a resistor R1, a resistor R2 and a resistor R3, a resistor R1 is connected with a battery cathode, a resistor R2 is connected with a resistor R4, a resistor R3 is connected with one end of a resistor RI2 and a power supply cathode, and the other end of the resistor RI2 is connected with a resistor R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022817291.7U CN213754057U (en) | 2020-11-30 | 2020-11-30 | Intelligent charger with wireless communication function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022817291.7U CN213754057U (en) | 2020-11-30 | 2020-11-30 | Intelligent charger with wireless communication function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213754057U true CN213754057U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022817291.7U Active CN213754057U (en) | 2020-11-30 | 2020-11-30 | Intelligent charger with wireless communication function |
Country Status (1)
| Country | Link |
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| CN (1) | CN213754057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115378076A (en) * | 2022-08-22 | 2022-11-22 | 深圳同圆智联科技有限公司 | Power module, system and charging method |
-
2020
- 2020-11-30 CN CN202022817291.7U patent/CN213754057U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115378076A (en) * | 2022-08-22 | 2022-11-22 | 深圳同圆智联科技有限公司 | Power module, system and charging method |
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