CN115459809A - BMS carrier communication circuit and use method thereof - Google Patents
BMS carrier communication circuit and use method thereof Download PDFInfo
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- CN115459809A CN115459809A CN202110640863.5A CN202110640863A CN115459809A CN 115459809 A CN115459809 A CN 115459809A CN 202110640863 A CN202110640863 A CN 202110640863A CN 115459809 A CN115459809 A CN 115459809A
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- 238000004891 communication Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004088 simulation Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention relates to the technical field of circuit design, in particular to a BMS carrier communication circuit and a using method thereof. The invention raises the communication signal voltage of the MCU to be higher than the total positive voltage by 5V/3.3V through the analytic circuit. And the external communication equipment filters the voltage of the P + through the internal voltage reduction analysis circuit, and the remaining communication signals are directly transmitted to the internal MCU. Conversely, external equipment solves the hot plug with the operation that BMS communication board is the same, and the communication is simplified, and the cost also reduces relatively, improves communication signal's voltage to than always just high 5V 3.3V's communication voltage, comes transmission signal through the main positive line of power, at analytic circuit part, raises communication signal, reduces communication signal and gives MCU discernment, directly through power cord communication, reduce cost.
Description
Technical Field
The invention relates to the technical field of circuit design, in particular to a BMS carrier communication circuit and a using method thereof.
Background
The BMS communication adopts RS485, CAN, I2C, RS232 communication now, adopts the double-wire, appears contacting the battery total positive pole earlier in the use, connects the communication line, connects the negative pole at last and just probably appears burning the device, does not support the hot plug (live plug). Correspondingly, a wire harness also appears, however, the wire harness also needs to be specially provided with a communication wire, so that the wires are not in common, devices can be burnt during hot plug, a peripheral protection circuit needs to be added correspondingly, and the cost is increased.
Disclosure of Invention
The invention aims to provide a BMS carrier communication circuit and a using method thereof, and aims to solve the problems that the conventional lithium battery common charger is high in risk, the software intelligent protection board is high in cost and poor in operability in the background technology.
In order to achieve the above object, in one aspect, the present invention provides the following technical solutions: the BMS carrier communication circuit comprises a BMS communication board and external communication equipment, wherein the external communication equipment comprises an external MCU and an external analysis circuit, and the BMS communication board comprises an internal MCU, an internal analysis circuit and an AFE analog front end.
Preferably, the AFE analog front end is connected to an input end of the internal MCU.
Preferably, the internal analysis circuit is connected to an internal MCU.
Preferably, the external analyzing circuit is connected to an external MCU.
Preferably, the external analysis circuit and the internal analysis circuit are connected in parallel to a positive power supply line terminal.
In another aspect, the present invention further provides a method for using a BMS carrier communication circuit, where any one of the BMS carrier communication circuits includes the following steps: through power cord direct communication, load communication signal directly over the power cord is always, give through external circuit with the signal and resolve out, convey MCU to, specifically raise MCU's communication signal voltage to than always just high 5V/3.3V for through resolving the circuit.
Preferably, the communication signal is always transmitted to the external communication device, the external communication device filters out the voltage of P + through the internal voltage reduction analysis circuit, the remaining communication signal is directly transmitted to the internal MCU, and in turn, the external device operates as the BMS communication board.
Compared with the prior art, the invention has the beneficial effects that:
1. in the BMS carrier communication circuit and the use method thereof, direct communication is realized through a power line. The communication signal is loaded on the power line assembly, the signal is analyzed through an external circuit and transmitted to the MCU, the communication signal voltage of the MCU is raised to be higher than the total positive voltage by 5V/3.3V through the analyzing circuit, and the communication signal is transmitted to the external communication equipment through the assembly positive voltage. And the external communication equipment filters the voltage of the P + through the internal voltage reduction analysis circuit, and the remaining communication signals are directly transmitted to the internal MCU. In turn, the external device operates as the BMS communication board.
2. In this BMS carrier communication circuit and application method, solved the hot plug, the communication is simplified, and the cost also reduces relatively, improves communication signal's voltage to the communication voltage who is higher than always just 5V 3.3V, comes the transmission signal through the power bus positive line, at analytic circuit part, raises communication signal, reduces communication signal and gives MCU discernment, solves the hot plug problem, directly through power cord communication, reduce cost.
Drawings
FIG. 1 is a schematic diagram of the circuit of the present invention;
fig. 2 is a waveform diagram of a transmission side of BMS communication according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention provides the following technical solutions:
the BMS carrier communication circuit comprises a BMS communication board and external communication equipment, wherein the external communication equipment comprises an external MCU and an external analysis circuit, and the BMS communication board comprises an internal MCU, an internal analysis circuit and an AFE analog front end.
Further, the AFE analog front end is connected to the input end of the internal MCU.
Specifically, the internal analyzing circuit is connected to the internal MCU.
It should be noted that the external analyzing circuit is connected to the external MCU.
In addition, the external and internal analytical circuits are connected in parallel to the positive power supply line terminal.
On the other hand, the invention also provides a use method of the BMS carrier communication circuit, and the BMS carrier communication circuit comprises the following steps: through power cord direct communication, load communication signal directly over the power cord is always, give through external circuit with the signal and resolve out, convey MCU to, specifically raise MCU's communication signal voltage to than always just high 5V/3.3V for through resolving the circuit. The communication signal is transmitted to the external communication device through the master. And the external communication equipment filters the voltage of the P + through the internal voltage reduction analysis circuit, and the remaining communication signals are directly transmitted to the internal MCU. In turn, the external device operates as the BMS communication board.
The BMS carrier communication circuit solves the problems of hot plug, simplifies communication, relatively reduces cost, increases the voltage of a communication signal to a communication voltage which is higher than the total positive voltage by 5V/3.3V, transmits the signal through the positive line of a power supply bus, raises the communication signal in an analysis circuit part, reduces the communication signal to be identified by an MCU, solves the problem of hot plug, directly communicates through a power line, and reduces cost.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A BMS carrier communication circuit, characterized by: including BMS communication board and external communication equipment, external communication equipment includes outside MCU, outside analytic circuit, the BMS communication board includes inside MCU, inside analytic circuit and AFE simulation front end.
2. The BMS carrier communication circuit of claim 1, characterized in that: and the AFE analog front end is connected with the input end of the internal MCU.
3. The BMS carrier communication circuit of claim 1, wherein: the internal analysis circuit is connected with the internal MCU.
4. The BMS carrier communication circuit of claim 1, wherein: the external analysis circuit is connected with the external MCU.
5. The BMS carrier communication circuit of claim 1, wherein: the external analytic circuit and the internal analytic circuit are connected in parallel to the positive end of the power line.
6. A method of using a BMS carrier communication circuit comprising the BMS carrier communication circuit of any of claims 1-5, wherein: the method comprises the following steps: through power cord direct communication, load communication signal directly over the power cord is always, give through external circuit with the signal and resolve out, convey MCU to, specifically raise MCU's communication signal voltage to than always just high 5V/3.3V for through resolving the circuit.
7. The use method of the BMS carrier communication circuit of claim 6, characterized by: communication signal is through always just transmitting to external communication equipment, and external communication equipment gives through inside step-down analytic circuit and filters the voltage of P +, remains communication signal direct transfer to inside MCU, and in return, external equipment is with the operation that the BMS communication board is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110640863.5A CN115459809A (en) | 2021-06-08 | 2021-06-08 | BMS carrier communication circuit and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110640863.5A CN115459809A (en) | 2021-06-08 | 2021-06-08 | BMS carrier communication circuit and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115459809A true CN115459809A (en) | 2022-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110640863.5A Pending CN115459809A (en) | 2021-06-08 | 2021-06-08 | BMS carrier communication circuit and use method thereof |
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| CN (1) | CN115459809A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205750382U (en) * | 2016-05-03 | 2016-11-30 | 深圳市高科润电子有限公司 | A kind of novel complex communication bus circuit |
| CN106788606A (en) * | 2017-03-10 | 2017-05-31 | 张洋 | A kind of electric line carrier communication method |
| CN207396562U (en) * | 2017-04-20 | 2018-05-22 | 深圳市瑞凡新能源科技有限公司 | A kind of correction compensation circuit for improving AFE(analog front end) precision |
| CN108964706A (en) * | 2018-06-27 | 2018-12-07 | 广州视源电子科技股份有限公司 | Power line method for transmitting signals, device and transmission electrical equipment |
| CN209608649U (en) * | 2019-02-26 | 2019-11-08 | 彭浩明 | Power carrier wave communication device, breaker, socket and system |
| CN111600391A (en) * | 2020-06-16 | 2020-08-28 | 深圳锐特机电技术有限公司 | RS-485-based direct-current power line communication device |
-
2021
- 2021-06-08 CN CN202110640863.5A patent/CN115459809A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205750382U (en) * | 2016-05-03 | 2016-11-30 | 深圳市高科润电子有限公司 | A kind of novel complex communication bus circuit |
| CN106788606A (en) * | 2017-03-10 | 2017-05-31 | 张洋 | A kind of electric line carrier communication method |
| CN207396562U (en) * | 2017-04-20 | 2018-05-22 | 深圳市瑞凡新能源科技有限公司 | A kind of correction compensation circuit for improving AFE(analog front end) precision |
| CN108964706A (en) * | 2018-06-27 | 2018-12-07 | 广州视源电子科技股份有限公司 | Power line method for transmitting signals, device and transmission electrical equipment |
| CN209608649U (en) * | 2019-02-26 | 2019-11-08 | 彭浩明 | Power carrier wave communication device, breaker, socket and system |
| CN111600391A (en) * | 2020-06-16 | 2020-08-28 | 深圳锐特机电技术有限公司 | RS-485-based direct-current power line communication device |
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