CN107766279B - Battery communication isolation circuit and device - Google Patents
Battery communication isolation circuit and device Download PDFInfo
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- CN107766279B CN107766279B CN201711205065.XA CN201711205065A CN107766279B CN 107766279 B CN107766279 B CN 107766279B CN 201711205065 A CN201711205065 A CN 201711205065A CN 107766279 B CN107766279 B CN 107766279B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4072—Drivers or receivers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017509—Interface arrangements
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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
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- 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
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Abstract
The invention discloses a battery communication isolation circuit and a device, wherein the battery communication isolation circuit comprises a plurality of MCU control modules, and the MCU control modules are used for receiving, decoding, encoding and transmitting communication information; the capacitive isolation communication modules are smaller than or equal to the MCU control modules in number, and different capacitive isolation communication modules are correspondingly and electrically connected with different MCU control modules, and capacitive isolation communication is carried out between different capacitive isolation communication modules through a circuit interface so as to realize communication information exchange. The invention has the advantages of low manufacturing cost, simple structure, good safety performance and strong applicability.
Description
Technical Field
The invention relates to the field of circuits, in particular to a battery communication isolation circuit and a device.
Background
Along with the wider and wider application fields of lithium ion batteries, the functional requirements of products are more and more, such as electric tools, dust collectors and the like, and the design complexity of a lithium ion battery protection scheme is also higher, so that more and more products currently adopt a communication mode to solve the complex functional requirements among products, and the common isolation communication mode adopts a photoelectric coupling isolation chip for communication, but the photoelectric coupling isolation communication chip has large volume, and the application of a plurality of products is limited due to the characteristics of high PCB layout cost and high element cost.
Disclosure of Invention
In view of the above, the present invention aims to provide a battery communication isolation circuit with low manufacturing cost, simple structure, and applicability to products with complex functions.
In order to solve the technical problems, the invention adopts the following scheme:
in a first aspect, the present invention provides a battery communication isolation circuit comprising,
the MCU control modules are used for receiving, decoding, encoding and transmitting the communication information;
the capacitive isolation communication modules are smaller than or equal to the MCU control modules in number, and different capacitive isolation communication modules are correspondingly and electrically connected with different MCU control modules, and capacitive isolation communication is carried out between different capacitive isolation communication modules through a circuit interface so as to realize communication information exchange.
Further, the battery communication isolation circuit comprises two MCU control modules and two capacitance isolation communication modules.
Further, one of the MCU control modules comprises an MCU chip U1, and the MCU chip U1 is correspondingly and electrically connected with one of the capacitance isolation communication modules; the other MCU control module comprises an MCU chip U2, wherein the MCU chip U2 is correspondingly and electrically connected with the other capacitance isolation communication module, and one capacitance isolation communication module comprises a first data input module and a first data output module;
the first data input module comprises a resistor R1, a capacitor C1, a triode Q1, a resistor R3, a resistor R5 and a resistor R11, wherein one end of the resistor R1 is connected with a power supply voltage end, the other end of the resistor R1 is connected with a collector of the triode Q1, the collector of the triode Q1 is also connected with a signal input end of the MCU chip U1, an emitting electrode of the triode Q1 is grounded, a base electrode of the triode Q1 is connected with one end of the capacitor C1 through the resistor R3, the other end of the capacitor CI is connected with one end of the circuit interface, a base electrode of the triode Q1 is grounded through the resistor R5, and one end of the capacitor C1 is also connected with the power supply voltage end through the resistor R11;
the first data output module comprises a resistor R7, a triode Q4 and a resistor R9, one end of the resistor R7 is connected with the signal output end of the MCU chip U1, the other end of the resistor R7 is connected with the base electrode of the triode Q4, the base electrode of the triode Q4 is grounded through the resistor R9, the emitter electrode of the triode Q4 is grounded, and the collector electrode of the triode Q4 is connected with one end of the circuit interface through a capacitor C1.
Further, the other capacitive isolation communication module comprises a second data input module and a second data output module;
the second data input module comprises a resistor R2, a capacitor C2, a triode Q2, a resistor R4, a resistor R6 and a resistor R12, wherein one end of the resistor R2 is connected with a power supply voltage end, the other end of the resistor R2 is connected with a collector of the triode Q2, the collector of the triode Q2 is also connected with a signal input end of the MCU chip U2, an emitting electrode of the triode Q2 is grounded, a base electrode of the triode Q2 is connected with one end of the capacitor C2 through the resistor R4, the other end of the capacitor C2 is connected with the other end of the circuit interface, a base electrode of the triode Q4 is grounded through the resistor R6, and one end of the capacitor C2 is also connected with the power supply voltage end through the resistor R12;
the second data output module comprises a resistor R8, a triode Q3 and a resistor R10, one end of the resistor R8 is connected with the signal output end of the MCU chip U2, the other end of the resistor R8 is connected with the base electrode of the triode Q3, the base electrode of the triode Q3 is grounded through the resistor R10, the emitter electrode of the triode Q3 is grounded, and the collector electrode of the triode Q3 is connected with the other end of the circuit interface through a capacitor C2.
Further, the transistors Q1, Q2, Q3 and Q4 are any one of PNP transistor, PMOS transistor and NMOS transistor.
Further, one of the MCU control modules comprises an MCU chip U3, and the MCU chip U3 is correspondingly and electrically connected with one of the capacitance isolation communication modules; the other MCU control module comprises an MCU chip U4, wherein the MCU chip U4 is correspondingly and electrically connected with the other capacitance isolation communication module, and one capacitance isolation communication module comprises a third data input module and a third data output module;
the third data input module comprises a resistor R13, a capacitor C3, a triode Q5, a resistor R17 and a resistor R19, wherein one end of the resistor R13 is connected with a power supply voltage end, the other end of the resistor R13 is connected with a collector of the triode Q5, the collector of the triode Q5 is also connected with a signal input end of the MCU chip U3, an emitter of the triode Q5 is grounded, a base of the triode Q5 is connected with one end of the capacitor C3 through the resistor R17, the other end of the capacitor C3 is connected with a first output end of the circuit interface, and a base of the triode Q5 is grounded through the resistor R19;
the third data output module comprises a resistor R14, a resistor R21, a triode Q8 and a resistor R23, one end of the resistor R21 is connected with the signal output end of the MCU chip U3, the other end of the resistor R21 is connected with the base electrode of the triode Q8, the base electrode of the triode Q8 is grounded through the resistor R23, the emitting electrode of the triode Q8 is grounded, the collecting electrode of the triode Q8 is connected with the first input end of the circuit interface, and the collecting electrode of the triode Q8 is connected with the power supply voltage end through the resistor R14.
Further, the other capacitive isolation communication module comprises a fourth data input module and a fourth data output module;
the fourth data input module comprises a resistor R16, a capacitor C4, a triode Q6, a resistor R18 and a resistor R20, wherein one end of the resistor R16 is connected with a power supply voltage end, the other end of the resistor R16 is connected with a collector of the triode Q6, the collector of the triode Q6 is also connected with a signal input end of the MCU chip U4, an emitter of the triode Q6 is grounded, a base of the triode Q6 is connected with one end of the capacitor C4 through the resistor R18, the other end of the capacitor C4 is connected with a second output end of the circuit interface, and a base of the triode Q6 is grounded through the resistor R20;
the third data output module comprises a resistor R15, a resistor R22, a triode Q7 and a resistor R24, one end of the resistor R22 is connected with the signal output end of the MCU chip U4, the other end of the resistor R22 is connected with the base electrode of the triode Q7, the base electrode of the triode Q7 is grounded through the resistor R24, the emitting electrode of the triode Q7 is grounded, the collecting electrode of the triode Q7 is connected with the second input end of the circuit interface, and the collecting electrode of the triode Q7 is connected with the power supply voltage end through the resistor R15;
the first output end of the circuit interface corresponds to the second input end; the first input and output end of the circuit interface corresponds to the second output end.
Further, the transistor Q5, the transistor Q6, the transistor Q7 and the transistor Q8 are any one of PNP transistors, PMOS transistors and NMOS transistors.
Further, the capacitor isolated communication is any one of IIC isolated communication, UART isolated communication and HDQ isolated communication.
In a second aspect, the present invention further provides a battery communication isolation device, which includes a control unit, and a battery communication isolation circuit as described in the first aspect, where the control unit is configured to control an operating state of the battery communication isolation circuit.
Compared with the prior art, the invention has the following advantages:
the battery communication isolation circuit is simple in structure, low in manufacturing cost, suitable for communication isolation between complex functional products, capable of improving communication efficiency, improving use experience of users and enhancing applicability of products.
Drawings
In order to more clearly illustrate the operating principle and the technical solutions used, the following description will briefly explain the operating principle and the drawings used as required in the technology used. It is obvious that the drawings in the following description are only some examples of the operation of the present invention, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a battery communication isolation circuit according to the present invention;
FIG. 2 is a circuit diagram of a battery communication isolation circuit according to the present invention;
fig. 3 is another circuit diagram of a battery communication isolation circuit according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings for a better understanding of the technical aspects of the present invention by those skilled in the art.
Referring to fig. 1, a battery communication isolation circuit includes a plurality of MCU control modules, where the MCU control modules are configured to receive, decode, encode and transmit communication information. The capacitive isolation communication modules are smaller than or equal to the MCU control modules in number, and different capacitive isolation communication modules are correspondingly and electrically connected with different MCU control modules, and capacitive isolation communication is carried out between different capacitive isolation communication modules through a circuit interface so as to realize communication information exchange.
Specifically, the battery communication isolation circuit can realize communication isolation between single battery products or multiple battery products, and can also improve communication reliability and stronger anti-interference capability during communication information exchange. Generally, the capacitor isolation communication may be any of IIC isolation communication, UART isolation communication and HDQ isolation communication, and of course, the embodiment of the present invention is not limited to the above three modes of capacitor isolation communication. Meanwhile, battery-type products generally include products related to lithium ion batteries. Meanwhile, as a preferable condition, generally, each product can comprise an MCU control module and a capacitance isolation communication module. In addition, two DATA in fig. 1 refer to communication protocol contents for transmitting encoded DATA and receiving decoded DATA.
As a further embodiment, the battery communication isolation circuit may include two MCU control modules and two capacitance isolation communication modules. As shown in fig. 1, the product a and the product B connected through a circuit interface can be included, wherein the product a can include one of the MCU control modules and one of the capacitance isolation communication modules 1; product B may include another MCU control module and another capacitive isolated communication module 2. Of course, the battery communication isolation circuit can be used for a plurality of products, and then corresponding connection can be carried out according to the needs through the circuit interface, so that capacitance isolation communication among the products is realized.
As a further example, as shown in fig. 2, one of the MCU control modules may include an MCU chip U1, where the MCU chip U1 is electrically connected to one of the capacitive isolated communication modules. The other MCU control module can comprise an MCU chip U2, and the MCU chip U2 is correspondingly and electrically connected with the other capacitance isolation communication module. One of the capacitive isolated communication modules may include a first data input module and a first data output module.
The first data input module comprises a resistor R1, a capacitor C1, a triode Q1, a resistor R3, a resistor R5 and a resistor R11, wherein one end of the resistor R1 is connected with a power supply voltage end, the other end of the resistor R1 is connected with a collector of the triode Q1, the collector of the triode Q1 is further connected with a signal input end of the MCU chip U1, an emitting electrode of the triode Q1 is grounded, a base electrode of the triode Q1 is connected with one end of the capacitor C1 through the resistor R3, the other end of the capacitor CI is connected with one end of the circuit interface, a base electrode of the triode Q1 is grounded through the resistor R5, and one end of the capacitor C1 is further connected with the power supply voltage end through the resistor R11.
The first data output module comprises a resistor R7, a triode Q4 and a resistor R9, one end of the resistor R7 is connected with the signal output end of the MCU chip U1, the other end of the resistor R7 is connected with the base electrode of the triode Q4, the base electrode of the triode Q4 is grounded through the resistor R9, the emitter electrode of the triode Q4 is grounded, and the collector electrode of the triode Q4 is connected with one end of the circuit interface through a capacitor C1.
Further, the other capacitive isolation communication module comprises a second data input module and a second data output module.
The second data input module comprises a resistor R2, a capacitor C2, a triode Q2, a resistor R4, a resistor R6 and a resistor R12, wherein one end of the resistor R2 is connected with a power supply voltage end, the other end of the resistor R2 is connected with a collector of the triode Q2, the collector of the triode Q2 is further connected with a signal input end of the MCU chip U2, an emitting electrode of the triode Q2 is grounded, a base electrode of the triode Q2 is connected with one end of the capacitor C2 through the resistor R4, the other end of the capacitor C2 is connected with the other end of the circuit interface, a base electrode of the triode Q4 is grounded through the resistor R6, and one end of the capacitor C2 is further connected with the power supply voltage end through the resistor R12.
The second data output module comprises a resistor R8, a triode Q3 and a resistor R10, one end of the resistor R8 is connected with the signal output end of the MCU chip U2, the other end of the resistor R8 is connected with the base electrode of the triode Q3, the base electrode of the triode Q3 is grounded through the resistor R10, the emitter electrode of the triode Q3 is grounded, and the collector electrode of the triode Q3 is connected with the other end of the circuit interface through a capacitor C2.
Specifically, one end of the circuit interface and the other end of the circuit interface have different communication protocol formats, so that various feasible capacitive isolation communication modes can be realized. Meanwhile, two DATA in fig. 2 refer to communication protocol contents for transmitting encoded DATA and receiving decoded DATA. And the MCU chip U1 and the MCU chip U2 can carry out data encoding and data decoding on the communication information, thereby realizing corresponding communication.
For example, when the communication signal generated by the product B is input into the product a, the level conversion is performed at the transistor Q1 after the communication signal passes through the transistor switch circuit module formed by the capacitor C1, the resistor R3, the transistor Q1, the resistor R1 and the resistor R11, so that the communication signal is input into the MCU chip U1, and the MCU chip U1 can decode the input external communication signal. Meanwhile, the MCU chip U1 can generate a communication signal for output, and the communication signal can be output to the product B through a capacitor C1 and a circuit interface after level conversion after passing through a transistor switch circuit module consisting of a resistor R7, a triode Q4 and a resistor R9.
For another example, when the communication signal generated by the product a is input into the product B, the level conversion is performed at the transistor Q2 after the communication signal passes through the transistor switch circuit module formed by the capacitor C2, the resistor R4, the transistor Q2, the resistor R2 and the resistor R12, so that the communication signal is input into the MCU chip U2, and the MCU chip U2 can decode the input external communication signal. Meanwhile, the MCU chip U2 can generate a communication signal for output, and the communication signal can be output to the product A through a capacitor C2 and a circuit interface after level conversion after passing through a transistor switch circuit module consisting of a resistor R8, a triode Q3 and a resistor R10. Therefore, the communication information can be exchanged between the product A and the product B. Similarly, the capacitive isolation communication among a plurality of products in the battery communication isolation circuit can be correspondingly realized.
Further, the transistors Q1, Q2, Q3 and Q4 are any one of PNP transistor, PMOS transistor and NMOS transistor. Of course, the transistors Q1, Q2, Q3 and Q4 may be other types of switching transistors, which is not limited in this embodiment.
As shown in fig. 3, as a further embodiment, one of the MCU control modules includes an MCU chip U3, where the MCU chip U3 is electrically connected to one of the capacitive isolation communication modules correspondingly; the other MCU control module comprises an MCU chip U4, and the MCU chip U4 is correspondingly and electrically connected with the other capacitance isolation communication module, wherein one capacitance isolation communication module comprises a third data input module and a third data output module.
The third data input module comprises a resistor R13, a capacitor C3, a triode Q5, a resistor R17 and a resistor R19, wherein one end of the resistor R13 is connected with a power supply voltage end, the other end of the resistor R13 is connected with a collector of the triode Q5, the collector of the triode Q5 is further connected with a signal input end of the MCU chip U3, an emitting electrode of the triode Q5 is grounded, a base electrode of the triode Q5 is connected with one end of the capacitor C3 through the resistor R17, the other end of the capacitor C3 is connected with a first output end of the circuit interface, and a base electrode of the triode Q5 is grounded through the resistor R19.
The third data output module comprises a resistor R14, a resistor R21, a triode Q8 and a resistor R23, one end of the resistor R21 is connected with the signal output end of the MCU chip U3, the other end of the resistor R21 is connected with the base electrode of the triode Q8, the base electrode of the triode Q8 is grounded through the resistor R23, the emitting electrode of the triode Q8 is grounded, the collecting electrode of the triode Q8 is connected with the first input end of the circuit interface, and the collecting electrode of the triode Q8 is connected with the power supply voltage end through the resistor R14.
Further, the other capacitive isolation communication module comprises a fourth data input module and a fourth data output module.
The fourth data input module comprises a resistor R16, a capacitor C4, a triode Q6, a resistor R18 and a resistor R20, one end of the resistor R16 is connected with a power supply voltage end, the other end of the resistor R16 is connected with a collector of the triode Q6, the collector of the triode Q6 is further connected with a signal input end of the MCU chip U4, an emitting electrode of the triode Q6 is grounded, a base electrode of the triode Q6 is connected with one end of the capacitor C4 through the resistor R18, the other end of the capacitor C4 is connected with a second output end of the circuit interface, and a base electrode of the triode Q6 is grounded through the resistor R20.
The third data output module comprises a resistor R15, a resistor R22, a triode Q7 and a resistor R24, one end of the resistor R22 is connected with the signal output end of the MCU chip U4, the other end of the resistor R22 is connected with the base electrode of the triode Q7, the base electrode of the triode Q7 is grounded through the resistor R24, the emitting electrode of the triode Q7 is grounded, the collecting electrode of the triode Q7 is connected with the second input end of the circuit interface, and the collecting electrode of the triode Q7 is connected with the power supply voltage end through the resistor R15;
the first output end of the circuit interface corresponds to the second input end; the first input and output end of the circuit interface corresponds to the second output end. Meanwhile, two DATA in fig. 3 refer to communication protocol contents for transmitting encoded DATA and receiving decoded DATA. And the MCU chip U3 and the MCU chip U4 can carry out data encoding and data decoding on the communication information, thereby realizing corresponding communication.
For example, when the communication signal generated by the product B is input to the product a, the communication signal passes through the transistor switch circuit module formed by the capacitor C4, the resistor R17, the transistor Q5 and the resistor R19, and then is level-converted at the transistor Q5, so that the communication signal is input to the MCU chip U3, and the MCU chip U3 can decode the input external communication signal. Meanwhile, the MCU chip U3 can generate a communication signal for output, and the communication signal can be output to the product B through a capacitor C3 and a circuit interface after level conversion after passing through a transistor switch circuit module consisting of a resistor R21, a triode Q8 and a resistor R23.
For another example, when the communication signal generated by the product a is input into the product B, the level conversion is performed at the transistor Q6 after the communication signal passes through the transistor switch circuit module formed by the capacitor C4, the resistor R16, the transistor Q6 and the resistor R18, so that the communication signal is input into the MCU chip U4, and the MCU chip U4 can decode the input external communication signal. Meanwhile, the MCU chip U4 can generate a communication signal for output, and the communication signal can be output to the product A through a capacitor C4 and a circuit interface after level conversion after passing through a transistor switch circuit module consisting of a resistor R22, a triode Q7 and a resistor R24. Therefore, the communication information can be exchanged between the product A and the product B. Similarly, the capacitive isolation communication among a plurality of products in the battery communication isolation circuit can be correspondingly realized.
Further, the transistor Q5, the transistor Q6, the transistor Q7 and the transistor Q8 are any one of PNP transistors, PMOS transistors and NMOS transistors. Of course, the transistors Q5, Q6, Q7 and Q8 may be other types of switching transistors, which is not limited in this embodiment.
In sum, this battery communication isolation circuit's simple structure, cost of manufacture is low moreover, is applicable to communication isolation between the complex function product, not only can improve communication efficiency, can also improve user's use experience degree, the suitability of reinforcing product.
In addition, the embodiment of the invention also provides a battery communication isolation device, which comprises a control unit and the battery communication isolation circuit in the embodiment, wherein the control unit is used for controlling the working state of the battery communication isolation circuit. Specifically, the control unit may control communication between different products in the battery communication isolation circuit. Meanwhile, the specific structure and the working principle of the battery communication isolation circuit are described in detail in the above embodiments, and are not described herein again.
The foregoing embodiments are merely examples of implementations of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention, and that these obvious alternatives fall within the scope of the invention.
Claims (8)
1. A battery communication isolation circuit is characterized by comprising,
the MCU control modules are used for receiving, decoding, encoding and transmitting the communication information;
the capacitive isolation communication modules are smaller than or equal to the MCU control modules in number, and different capacitive isolation communication modules are correspondingly and electrically connected with different MCU control modules, and the capacitive isolation communication modules are communicated through a circuit interface to realize the exchange of communication information;
one MCU control module comprises an MCU chip U1, and the MCU chip U1 is correspondingly and electrically connected with one capacitance isolation communication module; the other MCU control module comprises an MCU chip U2, wherein the MCU chip U2 is correspondingly and electrically connected with the other capacitance isolation communication module, and one capacitance isolation communication module comprises a first data input module and a first data output module;
the first data input module comprises a resistor R1, a capacitor C1, a triode Q1, a resistor R3, a resistor R5 and a resistor R11, wherein one end of the resistor R1 is connected with a power supply voltage end, the other end of the resistor R1 is connected with a collector of the triode Q1, the collector of the triode Q1 is also connected with a signal input end of the MCU chip U1, an emitting electrode of the triode Q1 is grounded, a base electrode of the triode Q1 is connected with one end of the capacitor C1 through the resistor R3, the other end of the capacitor CI is connected with one end of the circuit interface, a base electrode of the triode Q1 is grounded through the resistor R5, and one end of the capacitor C1 is also connected with the power supply voltage end through the resistor R11;
the first data output module comprises a resistor R7, a triode Q4 and a resistor R9, one end of the resistor R7 is connected with the signal output end of the MCU chip U1, the other end of the resistor R7 is connected with the base electrode of the triode Q4, the base electrode of the triode Q4 is grounded through the resistor R9, the emitter electrode of the triode Q4 is grounded, and the collector electrode of the triode Q4 is connected with one end of the circuit interface through a capacitor C1;
the other capacitive isolation communication module comprises a second data input module and a second data output module;
the second data input module comprises a resistor R2, a capacitor C2, a triode Q2, a resistor R4, a resistor R6 and a resistor R12, wherein one end of the resistor R2 is connected with a power supply voltage end, the other end of the resistor R2 is connected with a collector of the triode Q2, the collector of the triode Q2 is also connected with a signal input end of the MCU chip U2, an emitting electrode of the triode Q2 is grounded, a base electrode of the triode Q2 is connected with one end of the capacitor C2 through the resistor R4, the other end of the capacitor C2 is connected with the other end of the circuit interface, a base electrode of the triode Q4 is grounded through the resistor R6, and one end of the capacitor C2 is also connected with the power supply voltage end through the resistor R12;
the second data output module comprises a resistor R8, a triode Q3 and a resistor R10, one end of the resistor R8 is connected with the signal output end of the MCU chip U2, the other end of the resistor R8 is connected with the base electrode of the triode Q3, the base electrode of the triode Q3 is grounded through the resistor R10, the emitter electrode of the triode Q3 is grounded, and the collector electrode of the triode Q3 is connected with the other end of the circuit interface through a capacitor C2.
2. The battery communication isolation circuit of claim 1, wherein the battery communication isolation circuit comprises two MCU control modules and two capacitance isolation communication modules.
3. The battery communication isolation circuit of claim 1, wherein transistor Q1, transistor Q2, transistor Q3, and transistor Q4 are any of PNP transistor, PMOS transistor, and NMOS transistor.
4. The battery communication isolation circuit of claim 2, wherein one of the MCU control modules comprises an MCU chip U3, the MCU chip U3 being correspondingly electrically connected to one of the capacitor isolation communication modules; the other MCU control module comprises an MCU chip U4, wherein the MCU chip U4 is correspondingly and electrically connected with the other capacitance isolation communication module, and one capacitance isolation communication module comprises a third data input module and a third data output module;
the third data input module comprises a resistor R13, a capacitor C3, a triode Q5, a resistor R17 and a resistor R19, wherein one end of the resistor R13 is connected with a power supply voltage end, the other end of the resistor R13 is connected with a collector of the triode Q5, the collector of the triode Q5 is also connected with a signal input end of the MCU chip U3, an emitter of the triode Q5 is grounded, a base of the triode Q5 is connected with one end of the capacitor C3 through the resistor R17, the other end of the capacitor C3 is connected with a first output end of the circuit interface, and a base of the triode Q5 is grounded through the resistor R19;
the third data output module comprises a resistor R14, a resistor R21, a triode Q8 and a resistor R23, one end of the resistor R21 is connected with the signal output end of the MCU chip U3, the other end of the resistor R21 is connected with the base electrode of the triode Q8, the base electrode of the triode Q8 is grounded through the resistor R23, the emitting electrode of the triode Q8 is grounded, the collecting electrode of the triode Q8 is connected with the first input end of the circuit interface, and the collecting electrode of the triode Q8 is connected with the power supply voltage end through the resistor R14.
5. The battery communication isolation circuit of claim 4, wherein the other capacitor isolated communication module comprises a fourth data input module and a fourth data output module;
the fourth data input module comprises a resistor R16, a capacitor C4, a triode Q6, a resistor R18 and a resistor R20, wherein one end of the resistor R16 is connected with a power supply voltage end, the other end of the resistor R16 is connected with a collector of the triode Q6, the collector of the triode Q6 is also connected with a signal input end of the MCU chip U4, an emitter of the triode Q6 is grounded, a base of the triode Q6 is connected with one end of the capacitor C4 through the resistor R18, the other end of the capacitor C4 is connected with a second output end of the circuit interface, and a base of the triode Q6 is grounded through the resistor R20;
the third data output module comprises a resistor R15, a resistor R22, a triode Q7 and a resistor R24, one end of the resistor R22 is connected with the signal output end of the MCU chip U4, the other end of the resistor R22 is connected with the base electrode of the triode Q7, the base electrode of the triode Q7 is grounded through the resistor R24, the emitting electrode of the triode Q7 is grounded, the collecting electrode of the triode Q7 is connected with the second input end of the circuit interface, and the collecting electrode of the triode Q7 is connected with the power supply voltage end through the resistor R15;
the first output end of the circuit interface corresponds to the second input end; the first input and output end of the circuit interface corresponds to the second output end.
6. The battery communication isolation circuit of claim 5, wherein transistor Q5, transistor Q6, transistor Q7, and transistor Q8 are any of PNP transistor, PMOS transistor, and NMOS transistor.
7. The battery communication isolation circuit of claim 1, wherein the capacitive isolation communication is any one of IIC isolation communication, UART isolation communication, and HDQ isolation communication.
8. A battery communication isolation device, comprising a control unit, and a battery communication isolation circuit according to any one of claims 1 to 7, wherein the control unit is configured to control an operation state of the battery communication isolation circuit.
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|---|---|---|---|---|
| CN101674025A (en) * | 2009-10-12 | 2010-03-17 | 佛山市柏克电力设备有限公司 | Multiplexed output auxiliary switch power source powered by commercial power and battery |
| CN105116819A (en) * | 2015-07-29 | 2015-12-02 | 中国汽车技术研究中心 | Battery management main system suitable for new energy automobile and control method thereof |
| AU2015101407A4 (en) * | 2014-09-29 | 2015-12-10 | Chervon (Hk) Limited | Charging system and charging method thereof and battery pack |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674025A (en) * | 2009-10-12 | 2010-03-17 | 佛山市柏克电力设备有限公司 | Multiplexed output auxiliary switch power source powered by commercial power and battery |
| AU2015101407A4 (en) * | 2014-09-29 | 2015-12-10 | Chervon (Hk) Limited | Charging system and charging method thereof and battery pack |
| CN105116819A (en) * | 2015-07-29 | 2015-12-02 | 中国汽车技术研究中心 | Battery management main system suitable for new energy automobile and control method thereof |
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