WO2018214262A1 - Encoding chip and cell supervision circuit - Google Patents

Encoding chip and cell supervision circuit Download PDF

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Publication number
WO2018214262A1
WO2018214262A1 PCT/CN2017/093112 CN2017093112W WO2018214262A1 WO 2018214262 A1 WO2018214262 A1 WO 2018214262A1 CN 2017093112 W CN2017093112 W CN 2017093112W WO 2018214262 A1 WO2018214262 A1 WO 2018214262A1
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Prior art keywords
encoding
pin
mcu
mos transistor
high level
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PCT/CN2017/093112
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French (fr)
Chinese (zh)
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叶伏明
刘祥
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宁德时代新能源科技股份有限公司
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Publication of WO2018214262A1 publication Critical patent/WO2018214262A1/en

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/65—Purpose and implementation aspects
    • H03M13/6508—Flexibility, adaptability, parametrability and configurability of the implementation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes

Definitions

  • the present application relates to the field of electronic technologies, and in particular, to an encoding chip and a battery monitoring unit.
  • a BMS Battery Management System
  • CSCs Cell Supervision Circuits
  • the coded input and output of the encoding circuit on the CSC in the prior art may be on the same terminal or on different terminals. If the code input and output are on the same terminal, depending on the number of CSCs, a specific wire harness needs to be configured to connect, which increases the cost; if the code input and output are on different terminals, it is necessary to manually discriminate the terminal type and perform CSC. The connection causes a waste of human resources, and is prone to connection errors and affects coding efficiency.
  • the embodiment of the present application provides a coding chip and a battery monitoring unit, which are used to solve the technical problem that the prior art cannot be encoded due to a terminal connection error.
  • the embodiment of the present application provides an encoding chip for accessing and encoding a battery monitoring unit CSC, including a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU.
  • the encoding circuit includes:
  • a voltage input pin for external voltage source to provide an operating voltage to the MCU
  • a high level detection pin that connects the connection pin and transmits a coded signal to the MCU when a high level is detected
  • a signal receiving end configured to receive a code completion signal sent by the MCU, so that The connection pin sends a high level signal.
  • a gate end of the MOS transistor and the signal receiving end are connected by a triode, wherein the first end of the triode and the The gate end of the MOS transistor is connected, and the second end of the triode is a first ground end, and the control end of the triode is connected to the signal receiving end.
  • a source terminal of the MOS transistor and the voltage input pin are connected by a diode, a positive pole of the diode and the voltage input The pin is connected, and the negative electrode of the diode is connected to the source terminal of the MOS transistor.
  • the encoding circuit further includes:
  • the antistatic capacitor has one end connected to the connecting pin and the other end of the antistatic capacitor being a second ground.
  • the encoding circuit further includes:
  • one end of the filter capacitor is connected to the signal receiving end, and the other end of the filter capacitor is connected to the second end of the transistor.
  • an implementation manner is further provided, in which a voltage dividing resistor is connected between the connection pin and the high level detection pin.
  • an implementation manner is further provided, wherein the MOS transistor is a PMOS transistor.
  • an implementation is further provided, wherein the voltage input pin has an input voltage of 24V.
  • the embodiment of the present application provides a battery monitoring unit, including the above coding chip.
  • the encoding chip includes a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU, wherein the encoding circuit includes: a voltage input pin for externally connecting the voltage source to provide work to the MCU. Voltage; connection pin, connecting other CSC connection pins to receive/transmit level signals; high level detection pin, connecting the connection pins, and transmitting a coded signal to the MCU when a high level is detected a signal receiving end, configured to receive a code completion signal sent by the MCU, so that the connection pin sends a high level signal.
  • the circuit structure of the two encoding circuits of the encoding chip is completely the same.
  • the connecting pin of one encoding circuit is an encoding input
  • the connecting pin of the other encoding circuit is a coded output, and the user does not need to perform
  • coded input and coded output avoids connection errors and wasted human resources, effectively increasing the coding efficiency.
  • FIG. 1 is a schematic structural diagram of a coding chip provided by an embodiment of the present application.
  • FIG. 2 is a schematic circuit diagram of an encoding circuit provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a battery monitoring unit provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of an encoding manner provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another coding mode provided by an embodiment of the present application.
  • first, second, third, etc. may be used to describe the ground terminals in the embodiments of the present application, these ground terminals should not be limited to these terms. These terms are only used to distinguish the ground ends from each other.
  • first ground terminal may also be referred to as a second ground terminal without departing from the scope of the embodiments of the present application.
  • second ground terminal may also be referred to as a first ground terminal.
  • the word “if” as used herein may be interpreted as “when” or “when” or “in response to a determination” or “in response to Detection”.
  • the phrase “if determined” or “if detected (conditions or events stated)” may be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) “Time” or “in response to a test (condition or event stated)”.
  • FIG. 1 is a schematic structural diagram of a coding chip provided by an embodiment of the present application.
  • the encoding chip is used to access and encode the battery monitoring unit CSC, and includes a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU.
  • 2 is a schematic circuit diagram of an encoding circuit provided by an embodiment of the present application. As shown in FIG. 2, the encoding circuit includes:
  • the voltage input pin 21 is used for an external voltage source to provide an operating voltage to the MCU.
  • the output voltage of the external voltage source is 24V. Accordingly, the input voltage of the voltage input pin is 24V. Pin 4 and pin 5 in Figure 1 are used to connect the battery. Pressure source.
  • Connect pin 22 to connect the other CSC's connection pins to receive/transmit level signals.
  • connection pin 22 can be used to receive or transmit a level signal, that is, can be used for a coded output or an encoded input (Encode_In/Out).
  • the function of the connection pin is single and can only be used as a The coded input (Encode_In), or only as the coded output (Encode_Out), pin 3 in Figure 1 can be used for coded output or coded input.
  • a high level detection pin 23 is connected to the connection pin 22 and transmits an encoded signal to the MCU when a high level is detected.
  • the signal receiving end 24 is configured to receive a code completion signal sent by the MCU, so that the connection pin sends a high level signal.
  • the voltage input pin 21 and the connection pin 22 are connected by a MOS transistor Q1, wherein a source terminal of the MOS Q1 transistor is connected to the voltage input pin, a drain terminal of the MOS transistor Q1, and the The connection pin is connected, and the gate terminal of the MOS transistor Q1 is connected to the signal receiving end.
  • the gate end of the MOS transistor Q1 and the signal receiving end 24 are connected by a transistor Q2.
  • the first end of the transistor Q2 is connected to the gate terminal of the MOS transistor Q1, and the second end of the transistor Q2 is the first ground terminal DGND1, and the transistor Q2
  • the control terminal is connected to the signal receiving terminal 24.
  • the source terminal of the MOS transistor Q1 and the voltage input pin 21 are connected by a diode D1, the anode of the diode D1 is connected to the voltage input pin 21, and the cathode of the diode D1 is connected to the source terminal of the MOS transistor Q1.
  • pin 1 and pin 2 are the first ground terminal DGND1 and the second ground terminal DGND2
  • pin 3 is a connection pin
  • pin 4 and pin 5 are used to connect a voltage source, such as 24V
  • pin 6 and pin 7 are CANH terminal and CANL terminal
  • CANH terminal state is high level or floating state
  • CANL terminal is low level or floating state
  • CANH terminal and CANL terminal are used for accessing CAN bus For CAN communication.
  • connection pin 22 of the first encoding circuit on the encoding chip receives the level signal
  • the high level detecting pin 23 of the first encoding circuit detects the high level and sends an encoded signal to the MCU.
  • the MCU issues After the encoding completion signal is received, the signal receiving end 24 of the second encoding circuit on the encoding chip receives the encoding completion signal, and controls the connection pin of the second encoding circuit to send a high level signal. That is to say, the connection pin 22 of the first coding circuit is a signal input terminal, and the connection pin 22 of the second coding circuit is a signal output terminal, and vice versa.
  • FIG. 2 there are two encoding circuits on the same CSC, namely a first encoding circuit and a second encoding circuit.
  • connection pin 22 After the connection pin 22 receives the level signal, since the MOS transistor cannot be turned on at this time, the level information can only pass through the branch where the high level detection pin 23 is located, and the high level detection pin 23 detects the high level.
  • the coded signal is usually sent to the MCU, and the code completion signal sent by the MCU when the code is completed.
  • the signal receiving end 24 After the signal receiving end 24 receives the encoding completion signal (ie, the level signal), the first end and the second end of the transistor Q2 are turned on, and the gate of the MOS transistor Q1 receives the level signal, thereby Further, the source and drain of the MOS transistor Q1 are turned on, the voltage input pin 21 and the connection pin 22 are turned on, and the connection pin 22 outputs a level signal.
  • the encoding completion signal ie, the level signal
  • the high-level detection pin 23 of the second coding circuit detects a high-level signal at the same time, because the corresponding coding is performed in advance in the MCU, so that the MCU only responds to the first time by the high-level detection.
  • the pin 23 detects a high level signal and does not respond to the second high level detection pin 23 detecting a high level signal. That is, the MCU responds and encodes only the encoded signal of the high level detection pin 23 of the first encoding circuit.
  • the encoding circuit further includes:
  • Antistatic capacitor C1 one end of antistatic capacitor C1 is connected with connection pin 22, The other end of the electrostatic capacitor C1 is the second ground terminal DGND2.
  • the antistatic capacitor C1 can be used to absorb static electricity generated during the operation of the circuit to enhance the electrostatic protection strength of the code chip port.
  • the encoding circuit further includes:
  • the filter capacitor C2 has one end of the filter capacitor C2 connected to the signal receiving end 24, and the other end of the filter capacitor C2 is connected to the second end of the transistor Q2.
  • the filter capacitor is an energy storage device connected in parallel to the output end of the rectified power supply circuit for reducing the AC ripple ripple coefficient and smoothing the DC output.
  • the filter capacitor not only makes the DC output of the power supply smooth, but also reduces the influence of the alternating ripple ripple on the electronic circuit. At the same time, it can also absorb the current fluctuation generated during the operation of the electronic circuit and the interference caused by the AC power supply, so that the working performance of the electronic circuit is more stable.
  • a voltage dividing resistor R2 is connected between the connection pin 22 and the high level detection pin 23.
  • MOS transistor Q1 is a PMOS transistor.
  • a PMOS transistor that is, a P-channel field effect transistor, has two P+ regions on an N-type silicon substrate, which are respectively called a source and a drain, and are not conducted between the two electrodes, and can change a hole in the channel by changing a gate voltage. Density, which changes the resistance of the channel, further controls the on and off of the circuit.
  • a voltage dividing resistor R3 is connected between the drain terminal of the MOS transistor Q1 and the connection pin 22, and a voltage dividing resistor R1 is connected between the connection pin 22 and the second ground terminal DGND2, and the filter capacitor is connected.
  • a resistor R5 is connected in parallel on C2
  • a resistor R4 is connected in series between the second end of the transistor Q2 and the control terminal of the MOS transistor Q1
  • a resistor R6 is connected between the resistor R4 and the cathode of the diode D1, and the high level detecting pin 23 and the triode are connected.
  • the control terminal of Q2 is connected to resistor R7.
  • the encoding chip of the embodiment includes a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU, wherein the encoding circuit includes: a voltage input pin for externally connecting a voltage source to provide an operating voltage to the MCU a connection pin that connects to other CSC connection pins to receive/transmit a level signal; a high level detection pin that connects to the connection pin and sends a coded letter to the MCU when a high level is detected a signal receiving end, configured to receive a code completion signal sent by the MCU, so that the connection pin sends a high level signal.
  • the circuit structure of the two encoding circuits of the encoding chip is completely the same.
  • the connecting pin of one encoding circuit is an encoding input
  • the connecting pin of the other encoding circuit is a coded output, and the user does not need to perform
  • coded input and coded output avoids connection errors and wasted human resources, effectively increasing the coding efficiency.
  • the embodiment of the present application further provides a battery monitoring unit, which includes the above-mentioned coding chip as shown in FIG.
  • the battery monitoring unit of the embodiment includes an encoding chip
  • the encoding chip includes a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU, wherein the encoding circuit includes: a voltage input pin for external voltage source to The MCU provides an operating voltage; a connection pin that connects to other CSC connection pins to receive/transmit a level signal; a high level detection pin that connects the connection pin and when detected a high level The MCU sends an encoded signal; the signal receiving end is configured to receive a coded completion signal sent by the MCU, so that the connection pin sends a high level signal.
  • the circuit structure of the two encoding circuits of the encoding chip is completely the same.
  • the connecting pin of one encoding circuit is an encoding input
  • the connecting pin of the other encoding circuit is a coded output, and the user does not need to perform
  • coded input and coded output avoids connection errors and wasted human resources, effectively increasing the coding efficiency.
  • FIG. 4 is a schematic flowchart of a coding mode provided by an embodiment of the present application
  • FIG. 5 is a schematic flowchart of another coding mode provided by an embodiment of the present application.
  • connection pin of the first encoding circuit of the CSC1 receives the level signal, and after the encoding is completed, the connection pin of the second encoding circuit of the CSC1 outputs the encoded signal to the connection of the first encoding circuit of the CSC2. And then, after the encoding is completed, the encoded signal is output from the connection pin of the second encoding circuit of the CSC2 to the connection pin of the first encoding circuit of the CSC3, and then outputted by the connection pin of the second encoding circuit of the CSC3 after the encoding is completed. And so on. What is shown in Fig. 4 is the case of sequentially connecting in the normal order.
  • connection pin of the first encoding circuit of the CSC1 receives the level signal, and after the encoding is completed, the coded signal is outputted from the connection pin of the second encoding circuit of the CSC1.
  • the connection pin of the second encoding circuit of CSC2 To the connection pin of the second encoding circuit of CSC2, and then output the encoded signal to the connection pin of the first encoding circuit of CSC3 by the connection pin of the first encoding circuit of CSC2 after the encoding is completed, and then after the encoding is completed, The connection pin output of the second encoding circuit of CSC3, and so on. What is shown in Figure 5 is the case of not connecting in order.
  • the embodiment of the present application can smoothly encode each CSC.
  • each CSC can be successfully coded. If the coding mode of FIG. 5 occurs due to a wiring error, coding cannot be performed.

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Abstract

Disclosed are an encoding chip and a cell supervision circuit. The encoding chip comprises an MCU, and two encoding circuits respectively connected to the MCU, wherein the encoding circuits comprise: a voltage input pin externally connected to a voltage source so as to provide a working voltage to the MCU; a connection pin connected to connection pins of other CSCs so as to receive/send a level signal; a high level detection pin connected to the connection pin, and sending an encoding signal to the MCU when a high level is detected; and a signal receiving end for receiving an encoding completion signal sent by the MCU, so that the connection pin sends a high level signal. The encoding chip prevents connection errors and effectively improves the encoding efficiency.

Description

一种编码芯片和电池监控单元Code chip and battery monitoring unit 技术领域Technical field
本申请涉及电子技术领域，尤其涉及一种编码芯片和电池监控单元。The present application relates to the field of electronic technologies, and in particular, to an encoding chip and a battery monitoring unit.
背景技术Background technique
BMS(Battery Management System，电池管理******)中一般包括多个CSC(Cell Supervision Circuit，电池监控单元)，为了便于数据的传输与分配，往往需要对多个CSC进行编码以便于区分。A BMS (Battery Management System) generally includes a plurality of CSCs (Cell Supervision Circuits). In order to facilitate data transmission and distribution, it is often necessary to encode multiple CSCs for differentiation.
现有技术中CSC上的编码电路的编码输入和输出可以在同一端子上，也可以在不同端子上。若编码输入和输出在同一端子上，随着CSC数量的不同，需要配置特定的线束来进行连接，增加了成本；若编码输入和输出在不同端子上，需要在人工分辨端子类型后，进行CSC的连接，造成了人力资源的浪费，且容易出现连接错误的情况，影响编码效率。The coded input and output of the encoding circuit on the CSC in the prior art may be on the same terminal or on different terminals. If the code input and output are on the same terminal, depending on the number of CSCs, a specific wire harness needs to be configured to connect, which increases the cost; if the code input and output are on different terminals, it is necessary to manually discriminate the terminal type and perform CSC. The connection causes a waste of human resources, and is prone to connection errors and affects coding efficiency.
发明内容Summary of the invention
有鉴于此，本申请实施例提供了一种编码芯片和电池监控单元，用以解决现有技术由于端子连接错误造成无法编码的技术问题。In view of this, the embodiment of the present application provides a coding chip and a battery monitoring unit, which are used to solve the technical problem that the prior art cannot be encoded due to a terminal connection error.
一方面，本申请实施例提供了一种编码芯片，用于接入电池监控单元CSC并对其进行编码，包括微控制单元MCU以及两个分别与所述微控制单元MCU连接的编码电路，所述编码电路包括：In one aspect, the embodiment of the present application provides an encoding chip for accessing and encoding a battery monitoring unit CSC, including a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU. The encoding circuit includes:
电压输入引脚，用于外接电压源以向所述MCU提供工作电压；a voltage input pin for external voltage source to provide an operating voltage to the MCU;
连接引脚，连接其他CSC的连接引脚，以接收/发送电平信号；Connect pins to connect other CSC connection pins to receive/transmit level signals;
高电平检测引脚，连接所述连接引脚，并当检测到高电平时向所述MCU发送编码信号；a high level detection pin that connects the connection pin and transmits a coded signal to the MCU when a high level is detected;
信号接收端，用于接收所述MCU发出的编码完成信号，以使 所述连接引脚发送高电平信号。a signal receiving end, configured to receive a code completion signal sent by the MCU, so that The connection pin sends a high level signal.
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述电压输入引脚和连接引脚之间通过MOS管连接，其中，所述MOS管的源极端和所述电压输入引脚连接，MOS管的漏极端和所述连接引脚连接，MOS管的栅极端和所述信号接收端连接。An aspect as described above, and any possible implementation, further providing an implementation, wherein the voltage input pin and the connection pin are connected by a MOS transistor, wherein a source terminal of the MOS transistor and the voltage The input pin is connected, the drain terminal of the MOS transistor is connected to the connection pin, and the gate terminal of the MOS transistor is connected to the signal receiving end.
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述MOS管的栅极端和所述信号接收端之间通过三极管连接，其中，所述三极管的第一端和所述MOS管的栅极端连接，三极管的第二端为第一接地端，三极管的控制端和所述信号接收端连接。An aspect as described above, and any possible implementation, further providing an implementation, wherein a gate end of the MOS transistor and the signal receiving end are connected by a triode, wherein the first end of the triode and the The gate end of the MOS transistor is connected, and the second end of the triode is a first ground end, and the control end of the triode is connected to the signal receiving end.
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述MOS管的源极端和所述电压输入引脚之间通过二极管连接，所述二极管的正极与所述电压输入引脚连接，二极管的负极与所述MOS管的源极端连接。An aspect as described above, and any possible implementation, further providing an implementation, a source terminal of the MOS transistor and the voltage input pin are connected by a diode, a positive pole of the diode and the voltage input The pin is connected, and the negative electrode of the diode is connected to the source terminal of the MOS transistor.
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述编码电路还包括：The above-mentioned aspect and any possible implementation manner further provide an implementation manner, where the encoding circuit further includes:
防静电电容，所述防静电电容的一端和所述连接引脚连接，防静电电容的另一端为第二接地端。The antistatic capacitor has one end connected to the connecting pin and the other end of the antistatic capacitor being a second ground.
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述编码电路还包括：The above-mentioned aspect and any possible implementation manner further provide an implementation manner, where the encoding circuit further includes:
滤波电容，所述滤波电容的一端和所述信号接收端连接，滤波电容的另一端和所述三极管的第二端连接。a filter capacitor, one end of the filter capacitor is connected to the signal receiving end, and the other end of the filter capacitor is connected to the second end of the transistor.
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述连接引脚和所述高电平检测引脚之间连接有分压电阻。In an aspect as described above and any possible implementation manner, an implementation manner is further provided, in which a voltage dividing resistor is connected between the connection pin and the high level detection pin.
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述MOS管为PMOS管。In an aspect as described above and any possible implementation manner, an implementation manner is further provided, wherein the MOS transistor is a PMOS transistor.
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述电压输入引脚的输入电压为24V。In an aspect as described above and any possible implementation, an implementation is further provided, wherein the voltage input pin has an input voltage of 24V.
另一方面，本申请实施例提供了一种电池监控单元，包括上述编码芯片。 On the other hand, the embodiment of the present application provides a battery monitoring unit, including the above coding chip.
上述技术方案中的一个技术方案具有如下有益效果：One of the above technical solutions has the following beneficial effects:
本申请实施例中，编码芯片包括微控制单元MCU以及两个分别与微控制单元MCU连接的编码电路，其中，编码电路包括：电压输入引脚，用于外接电压源以向所述MCU提供工作电压；连接引脚，连接其他CSC的连接引脚，以接收/发送电平信号；高电平检测引脚，连接所述连接引脚，并当检测到高电平时向所述MCU发送编码信号；信号接收端，用于接收所述MCU发出的编码完成信号，以使所述连接引脚发送高电平信号。和现有技术相比，编码芯片的两个编码电路的电路结构是完全相同的，若一个编码电路的连接引脚为编码输入，则另一个编码电路的连接引脚为编码输出，用户无需进行编码输入和编码输出的区分，从而避免了连接错误和人力资源浪费的情况，有效影响提升了编码效率。In the embodiment of the present application, the encoding chip includes a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU, wherein the encoding circuit includes: a voltage input pin for externally connecting the voltage source to provide work to the MCU. Voltage; connection pin, connecting other CSC connection pins to receive/transmit level signals; high level detection pin, connecting the connection pins, and transmitting a coded signal to the MCU when a high level is detected a signal receiving end, configured to receive a code completion signal sent by the MCU, so that the connection pin sends a high level signal. Compared with the prior art, the circuit structure of the two encoding circuits of the encoding chip is completely the same. If the connecting pin of one encoding circuit is an encoding input, the connecting pin of the other encoding circuit is a coded output, and the user does not need to perform The distinction between coded input and coded output avoids connection errors and wasted human resources, effectively increasing the coding efficiency.
附图说明DRAWINGS
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. One of ordinary skill in the art can also obtain other drawings based on these drawings without paying for inventive labor.
图1是本申请实施例所提供的编码芯片的结构示意图；1 is a schematic structural diagram of a coding chip provided by an embodiment of the present application;
图2是本申请实施例所提供的编码电路的电路示意图；2 is a schematic circuit diagram of an encoding circuit provided by an embodiment of the present application;
图3是本申请实施例所提供的电池监控单元的结构示意图；3 is a schematic structural diagram of a battery monitoring unit provided by an embodiment of the present application;
图4是本申请实施例所提供的一种编码方式的流程示意图；4 is a schematic flowchart of an encoding manner provided by an embodiment of the present application;
图5是本申请实施例所提供的另一种编码方式的流程示意图。FIG. 5 is a schematic flowchart of another coding mode provided by an embodiment of the present application.
具体实施方式detailed description
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。For a better understanding of the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不 是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。It should be understood that the described embodiments are only a part of the embodiments of the present application and are not It is the entire embodiment. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。The terms used in the embodiments of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the application. The singular forms "a", "the", and "the"
应当理解，本文中使用的术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。It should be understood that the term "and/or" as used herein is merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, while A and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.
应当理解，尽管在本申请实施例中可能采用术语第一、第二、第三等来描述接地端，但这些接地端不应限于这些术语。这些术语仅用来将接地端彼此区分开。例如，在不脱离本申请实施例范围的情况下，第一接地端也可以被称为第二接地端，类似地，第二接地端也可以被称为第一接地端。It should be understood that although the terms first, second, third, etc. may be used to describe the ground terminals in the embodiments of the present application, these ground terminals should not be limited to these terms. These terms are only used to distinguish the ground ends from each other. For example, the first ground terminal may also be referred to as a second ground terminal without departing from the scope of the embodiments of the present application. Similarly, the second ground terminal may also be referred to as a first ground terminal.
取决于语境，如在此所使用的词语“如果”可以被解释成为“在......时”或“当......时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to a determination" or "in response to Detection". Similarly, depending on the context, the phrase "if determined" or "if detected (conditions or events stated)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event) "Time" or "in response to a test (condition or event stated)".
本申请实施例给出了一种编码芯片，图1是本申请实施例所提供的编码芯片的结构示意图。该编码芯片，用于接入电池监控单元CSC并对其进行编码，包括微控制单元MCU以及两个分别与微控制单元MCU连接的编码电路。图2是本申请实施例所提供的编码电路的电路示意图，如图2所示，该编码电路包括：The embodiment of the present application provides a coding chip, and FIG. 1 is a schematic structural diagram of a coding chip provided by an embodiment of the present application. The encoding chip is used to access and encode the battery monitoring unit CSC, and includes a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU. 2 is a schematic circuit diagram of an encoding circuit provided by an embodiment of the present application. As shown in FIG. 2, the encoding circuit includes:
电压输入引脚21，用于外接电压源以向MCU提供工作电压。The voltage input pin 21 is used for an external voltage source to provide an operating voltage to the MCU.
需要说明的是，外接电压源的输出电压为24V，相应地，电压输入引脚的输入电压为24V，图1中的引脚4和引脚5用于连接电 压源。It should be noted that the output voltage of the external voltage source is 24V. Accordingly, the input voltage of the voltage input pin is 24V. Pin 4 and pin 5 in Figure 1 are used to connect the battery. Pressure source.
连接引脚22，连接其他CSC的连接引脚，以接收/发送电平信号。Connect pin 22 to connect the other CSC's connection pins to receive/transmit level signals.
需要说明的是，连接引脚22可以用于接收或者发送电平信号，即可以用于编码输出或者编码输入(Encode_In/Out)，现有技术中连接引脚的功能是单一的，只能作为编码输入(Encode_In)，或者只能作为编码输出(Encode_Out)，图1中的引脚3可用于编码输出或者编码输入。It should be noted that the connection pin 22 can be used to receive or transmit a level signal, that is, can be used for a coded output or an encoded input (Encode_In/Out). In the prior art, the function of the connection pin is single and can only be used as a The coded input (Encode_In), or only as the coded output (Encode_Out), pin 3 in Figure 1 can be used for coded output or coded input.
高电平检测引脚23，连接所述连接引脚22，并当检测到高电平时向MCU发送编码信号。A high level detection pin 23 is connected to the connection pin 22 and transmits an encoded signal to the MCU when a high level is detected.
信号接收端24，用于接收MCU发出的编码完成信号，以使所述连接引脚发送高电平信号。The signal receiving end 24 is configured to receive a code completion signal sent by the MCU, so that the connection pin sends a high level signal.
如图2所示，电压输入引脚21和连接引脚22之间通过MOS管Q1连接，其中，MOS Q1管的源极端和所述电压输入引脚连接，MOS管Q1的漏极端和所述连接引脚连接，MOS管Q1的栅极端和所述信号接收端连接。As shown in FIG. 2, the voltage input pin 21 and the connection pin 22 are connected by a MOS transistor Q1, wherein a source terminal of the MOS Q1 transistor is connected to the voltage input pin, a drain terminal of the MOS transistor Q1, and the The connection pin is connected, and the gate terminal of the MOS transistor Q1 is connected to the signal receiving end.
MOS管Q1的栅极端和信号接收端24之间通过三极管Q2连接，其中，三极管Q2的第一端和MOS管Q1的栅极端连接，三极管Q2的第二端为第一接地端DGND1，三极管Q2的控制端和信号接收端24连接。The gate end of the MOS transistor Q1 and the signal receiving end 24 are connected by a transistor Q2. The first end of the transistor Q2 is connected to the gate terminal of the MOS transistor Q1, and the second end of the transistor Q2 is the first ground terminal DGND1, and the transistor Q2 The control terminal is connected to the signal receiving terminal 24.
MOS管Q1的源极端和电压输入引脚21之间通过二极管D1连接，二极管D1的正极与电压输入引脚21连接，二极管D1的负极与MOS管Q1的源极端连接。The source terminal of the MOS transistor Q1 and the voltage input pin 21 are connected by a diode D1, the anode of the diode D1 is connected to the voltage input pin 21, and the cathode of the diode D1 is connected to the source terminal of the MOS transistor Q1.
另外，如图1所示，引脚1和引脚2为第一接地端DGND1和第二接地端DGND2，引脚3为连接引脚，引脚4和引脚5用于连接电压源，比如为24V，引脚6和引脚7为CANH端和CANL端，CANH端的状态为高电平或悬浮状态，CANL端为低电平或悬浮状态，CANH端和CANL端用于接入CAN总线用于进行CAN通信。In addition, as shown in Figure 1, pin 1 and pin 2 are the first ground terminal DGND1 and the second ground terminal DGND2, pin 3 is a connection pin, and pin 4 and pin 5 are used to connect a voltage source, such as 24V, pin 6 and pin 7 are CANH terminal and CANL terminal, CANH terminal state is high level or floating state, CANL terminal is low level or floating state, CANH terminal and CANL terminal are used for accessing CAN bus For CAN communication.
本申请实施例编码芯片的原理具体如下： The principle of the encoding chip in the embodiment of the present application is specifically as follows:
当编码芯片上第一编码电路的连接引脚22接收到电平信号后，第一编码电路的高电平检测引脚23检测到高电平时向MCU发送编码信号，待编码完成时，MCU发出的编码完成信号，编码芯片上第二编码电路的信号接收端24接收到编码完成信号后，控制第二编码电路的连接引脚发送高电平信号。也就是说，第一编码电路的连接引脚22为信号输入端，第二编码电路的连接引脚22为信号输出端，反之亦然。When the connection pin 22 of the first encoding circuit on the encoding chip receives the level signal, the high level detecting pin 23 of the first encoding circuit detects the high level and sends an encoded signal to the MCU. When the encoding is completed, the MCU issues After the encoding completion signal is received, the signal receiving end 24 of the second encoding circuit on the encoding chip receives the encoding completion signal, and controls the connection pin of the second encoding circuit to send a high level signal. That is to say, the connection pin 22 of the first coding circuit is a signal input terminal, and the connection pin 22 of the second coding circuit is a signal output terminal, and vice versa.
下面从电路的角度对本申请实施例编码芯片的原理进行详细的解释。The principle of the encoding chip of the embodiment of the present application is explained in detail below from the perspective of the circuit.
如图2所示，同一个CSC上具有两个编码电路，即第一编码电路和第二编码电路。As shown in FIG. 2, there are two encoding circuits on the same CSC, namely a first encoding circuit and a second encoding circuit.
第一编码电路：The first encoding circuit:
连接引脚22接收到电平信号后，由于MOS管此时无法被导通，所以电平信息只能通过高电平检测引脚23所在支路，高电平检测引脚23检测到高电平时向MCU发送编码信号，待编码完成时，MCU发出的编码完成信号。After the connection pin 22 receives the level signal, since the MOS transistor cannot be turned on at this time, the level information can only pass through the branch where the high level detection pin 23 is located, and the high level detection pin 23 detects the high level. The coded signal is usually sent to the MCU, and the code completion signal sent by the MCU when the code is completed.
第二编码电路：Second encoding circuit:
信号接收端24接收到编码完成信号(即电平信号)后，此时三极管Q2的第一端和第二端之间会被导通，MOS管Q1的栅极会接收到电平信号，从而进一步导通MOS管Q1源极和漏极，电压输入引脚21和连接引脚22导通，连接引脚22会输出电平信号。After the signal receiving end 24 receives the encoding completion signal (ie, the level signal), the first end and the second end of the transistor Q2 are turned on, and the gate of the MOS transistor Q1 receives the level signal, thereby Further, the source and drain of the MOS transistor Q1 are turned on, the voltage input pin 21 and the connection pin 22 are turned on, and the connection pin 22 outputs a level signal.
需要说明的是，此时第二编码电路高电平检测引脚23同时会检测到高电平信号，因为在MCU中提前做出相应编码，使得MCU只响应第一次由高电平检测引脚23检测到高电平信号，对第二次由高电平检测引脚23检测到高电平信号不进行响应。也就是说，MCU只针对第一编码电路的高电平检测引脚23的编码信号进行响应并编码。It should be noted that, at this time, the high-level detection pin 23 of the second coding circuit detects a high-level signal at the same time, because the corresponding coding is performed in advance in the MCU, so that the MCU only responds to the first time by the high-level detection. The pin 23 detects a high level signal and does not respond to the second high level detection pin 23 detecting a high level signal. That is, the MCU responds and encodes only the encoded signal of the high level detection pin 23 of the first encoding circuit.
进一步地，编码电路还包括：Further, the encoding circuit further includes:
防静电电容C1，防静电电容C1的一端和连接引脚22连接，防 静电电容的C1另一端为第二接地端DGND2。Antistatic capacitor C1, one end of antistatic capacitor C1 is connected with connection pin 22, The other end of the electrostatic capacitor C1 is the second ground terminal DGND2.
需要说明的是，防静电电容C1可以用来吸收电路运行过程中产生的静电，以增强对编码芯片端口的静电防护强度。It should be noted that the antistatic capacitor C1 can be used to absorb static electricity generated during the operation of the circuit to enhance the electrostatic protection strength of the code chip port.
进一步地，编码电路还包括：Further, the encoding circuit further includes:
滤波电容C2，滤波电容C2的一端和信号接收端24连接，滤波电容C2的另一端和三极管Q2的第二端连接。The filter capacitor C2 has one end of the filter capacitor C2 connected to the signal receiving end 24, and the other end of the filter capacitor C2 is connected to the second end of the transistor Q2.
可以理解，滤波电容是并联在整流电源电路输出端，用以降低交流脉动波纹系数、平滑直流输出的一种储能器。滤波电容不仅使电源直流输出平稳，降低了交变脉动波纹对电子电路的影响，同时还可吸收电子电路工作过程中产生的电流波动和经由交流电源串入的干扰，使得电子电路的工作性能更加稳定。It can be understood that the filter capacitor is an energy storage device connected in parallel to the output end of the rectified power supply circuit for reducing the AC ripple ripple coefficient and smoothing the DC output. The filter capacitor not only makes the DC output of the power supply smooth, but also reduces the influence of the alternating ripple ripple on the electronic circuit. At the same time, it can also absorb the current fluctuation generated during the operation of the electronic circuit and the interference caused by the AC power supply, so that the working performance of the electronic circuit is more stable.
进一步地，连接引脚22和高电平检测引脚23之间连接有分压电阻R2。Further, a voltage dividing resistor R2 is connected between the connection pin 22 and the high level detection pin 23.
进一步地，MOS管Q1为PMOS管。Further, the MOS transistor Q1 is a PMOS transistor.
PMOS管即P沟道场效应晶体管，其在N型硅衬底上有两个P+区，分别叫做源极和漏极，两极之间不通导，可通过改变栅极电压来改变沟道中的空穴密度，从而改变沟道的电阻，进一步控制电路的通断。A PMOS transistor, that is, a P-channel field effect transistor, has two P+ regions on an N-type silicon substrate, which are respectively called a source and a drain, and are not conducted between the two electrodes, and can change a hole in the channel by changing a gate voltage. Density, which changes the resistance of the channel, further controls the on and off of the circuit.
另外，再如图2所示，MOS管Q1的漏极端和连接引脚22之间连接有分压电阻R3，连接引脚22和第二接地端DGND2之间连接有分压电阻R1，滤波电容C2上并联有电阻R5，三极管Q2的第二端和MOS管Q1的控制端之间串联由电阻R4，电阻R4和二极管D1的负极之间连接有电阻R6，高电平检测引脚23和三极管Q2的控制端连接有电阻R7。In addition, as shown in FIG. 2, a voltage dividing resistor R3 is connected between the drain terminal of the MOS transistor Q1 and the connection pin 22, and a voltage dividing resistor R1 is connected between the connection pin 22 and the second ground terminal DGND2, and the filter capacitor is connected. A resistor R5 is connected in parallel on C2, a resistor R4 is connected in series between the second end of the transistor Q2 and the control terminal of the MOS transistor Q1, and a resistor R6 is connected between the resistor R4 and the cathode of the diode D1, and the high level detecting pin 23 and the triode are connected. The control terminal of Q2 is connected to resistor R7.
本实施例的编码芯片，包括微控制单元MCU以及两个分别与微控制单元MCU连接的编码电路，其中，编码电路包括：电压输入引脚，用于外接电压源以向所述MCU提供工作电压；连接引脚，连接其他CSC的连接引脚，以接收/发送电平信号；高电平检测引脚，连接所述连接引脚，并当检测到高电平时向所述MCU发送编码信 号；信号接收端，用于接收所述MCU发出的编码完成信号，以使所述连接引脚发送高电平信号。和现有技术相比，编码芯片的两个编码电路的电路结构是完全相同的，若一个编码电路的连接引脚为编码输入，则另一个编码电路的连接引脚为编码输出，用户无需进行编码输入和编码输出的区分，从而避免了连接错误和人力资源浪费的情况，有效影响提升了编码效率。The encoding chip of the embodiment includes a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU, wherein the encoding circuit includes: a voltage input pin for externally connecting a voltage source to provide an operating voltage to the MCU a connection pin that connects to other CSC connection pins to receive/transmit a level signal; a high level detection pin that connects to the connection pin and sends a coded letter to the MCU when a high level is detected a signal receiving end, configured to receive a code completion signal sent by the MCU, so that the connection pin sends a high level signal. Compared with the prior art, the circuit structure of the two encoding circuits of the encoding chip is completely the same. If the connecting pin of one encoding circuit is an encoding input, the connecting pin of the other encoding circuit is a coded output, and the user does not need to perform The distinction between coded input and coded output avoids connection errors and wasted human resources, effectively increasing the coding efficiency.
基于上述编码芯片，本申请实施例还提供了一种电池监控单元，如图3所示包括上述编码芯片。Based on the foregoing coding chip, the embodiment of the present application further provides a battery monitoring unit, which includes the above-mentioned coding chip as shown in FIG.
本实施例的电池监控单元包括编码芯片，编码芯片包括微控制单元MCU以及两个分别与微控制单元MCU连接的编码电路，其中，编码电路包括：电压输入引脚，用于外接电压源以向所述MCU提供工作电压；连接引脚，连接其他CSC的连接引脚，以接收/发送电平信号；高电平检测引脚，连接所述连接引脚，并当检测到高电平时向所述MCU发送编码信号；信号接收端，用于接收所述MCU发出的编码完成信号，以使所述连接引脚发送高电平信号。和现有技术相比，编码芯片的两个编码电路的电路结构是完全相同的，若一个编码电路的连接引脚为编码输入，则另一个编码电路的连接引脚为编码输出，用户无需进行编码输入和编码输出的区分，从而避免了连接错误和人力资源浪费的情况，有效影响提升了编码效率。The battery monitoring unit of the embodiment includes an encoding chip, and the encoding chip includes a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU, wherein the encoding circuit includes: a voltage input pin for external voltage source to The MCU provides an operating voltage; a connection pin that connects to other CSC connection pins to receive/transmit a level signal; a high level detection pin that connects the connection pin and when detected a high level The MCU sends an encoded signal; the signal receiving end is configured to receive a coded completion signal sent by the MCU, so that the connection pin sends a high level signal. Compared with the prior art, the circuit structure of the two encoding circuits of the encoding chip is completely the same. If the connecting pin of one encoding circuit is an encoding input, the connecting pin of the other encoding circuit is a coded output, and the user does not need to perform The distinction between coded input and coded output avoids connection errors and wasted human resources, effectively increasing the coding efficiency.
图4是本申请实施例所提供的一种编码方式的流程示意图，图5是本申请实施例所提供的另一种编码方式的流程示意图。4 is a schematic flowchart of a coding mode provided by an embodiment of the present application, and FIG. 5 is a schematic flowchart of another coding mode provided by an embodiment of the present application.
如图4所示，CSC1的第一编码电路的连接引脚接收到电平信号，在编码完成后由CSC1的第二编码电路的连接引脚输出编码信号至CSC2的第一编码电路的连接引脚，然后在编码完成后由CSC2的第二编码电路的连接引脚输出编码信号至CSC3的第一编码电路的连接引脚，然后在编码完成后由CSC3的第二编码电路的连接引脚输出，以此类推。图4中示出的是按照正常顺序依次连接的情况。As shown in FIG. 4, the connection pin of the first encoding circuit of the CSC1 receives the level signal, and after the encoding is completed, the connection pin of the second encoding circuit of the CSC1 outputs the encoded signal to the connection of the first encoding circuit of the CSC2. And then, after the encoding is completed, the encoded signal is output from the connection pin of the second encoding circuit of the CSC2 to the connection pin of the first encoding circuit of the CSC3, and then outputted by the connection pin of the second encoding circuit of the CSC3 after the encoding is completed. And so on. What is shown in Fig. 4 is the case of sequentially connecting in the normal order.
如图5所示，CSC1的第一编码电路的连接引脚接收到电平信号，在编码完成后由CSC1的第二编码电路的连接引脚输出编码信 号至CSC2的第二编码电路的连接引脚，然后在编码完成后由CSC2的第一编码电路的连接引脚输出编码信号至CSC3的第一编码电路的连接引脚，然后在编码完成后由CSC3的第二编码电路的连接引脚输出，以此类推。图5中示出的是不按照顺序连接的情况。As shown in FIG. 5, the connection pin of the first encoding circuit of the CSC1 receives the level signal, and after the encoding is completed, the coded signal is outputted from the connection pin of the second encoding circuit of the CSC1. To the connection pin of the second encoding circuit of CSC2, and then output the encoded signal to the connection pin of the first encoding circuit of CSC3 by the connection pin of the first encoding circuit of CSC2 after the encoding is completed, and then after the encoding is completed, The connection pin output of the second encoding circuit of CSC3, and so on. What is shown in Figure 5 is the case of not connecting in order.
无论出现何种连接方式，本申请实施例均可顺利对每个CSC进行编码。而在现有技术中，只有在满足图4编码方式的情况下，才能顺利的每个CSC进行编码，若由于接线错误出现图5编码方式的情况下，是无法进行编码的。Regardless of the connection mode, the embodiment of the present application can smoothly encode each CSC. In the prior art, only when the coding mode of FIG. 4 is satisfied, each CSC can be successfully coded. If the coding mode of FIG. 5 occurs due to a wiring error, coding cannot be performed.
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。 The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc., which are made within the spirit and principles of the present application, should be included in the present application. Within the scope of protection.

Claims (10)

  1. 一种编码芯片，用于接入电池监控单元CSC并对其进行编码，包括微控制单元MCU以及两个分别与所述微控制单元MCU连接的编码电路，其特征在于，所述编码电路包括：An encoding chip for accessing and encoding a battery monitoring unit CSC, comprising a micro control unit MCU and two encoding circuits respectively connected to the micro control unit MCU, wherein the encoding circuit comprises:
    电压输入引脚，用于外接电压源以向所述MCU提供工作电压；a voltage input pin for external voltage source to provide an operating voltage to the MCU;
    连接引脚，连接其他CSC的连接引脚，以接收/发送电平信号；Connect pins to connect other CSC connection pins to receive/transmit level signals;
    高电平检测引脚，连接所述连接引脚，并当检测到高电平时向所述MCU发送编码信号；a high level detection pin that connects the connection pin and transmits a coded signal to the MCU when a high level is detected;
    信号接收端，用于接收所述MCU发出的编码完成信号，以使所述连接引脚发送高电平信号。The signal receiving end is configured to receive a code completion signal sent by the MCU, so that the connection pin sends a high level signal.
  2. 根据权利要求1所述的编码芯片，其特征在于，所述电压输入引脚和连接引脚之间通过MOS管连接，其中，所述MOS管的源极端和所述电压输入引脚连接，MOS管的漏极端和所述连接引脚连接，MOS管的栅极端和所述信号接收端连接。The encoding chip according to claim 1, wherein said voltage input pin and said connection pin are connected by a MOS transistor, wherein a source terminal of said MOS transistor is connected to said voltage input pin, MOS The drain terminal of the transistor is connected to the connection pin, and the gate terminal of the MOS transistor is connected to the signal receiving terminal.
  3. 根据权利要求2所述的编码芯片，其特征在于，所述MOS管的栅极端和所述信号接收端之间通过三极管连接，其中，所述三极管的第一端和所述MOS管的栅极端连接，三极管的第二端为第一接地端，三极管的控制端和所述信号接收端连接。The code chip according to claim 2, wherein a gate end of said MOS transistor and said signal receiving end are connected by a triode, wherein said first end of said triode and a gate end of said MOS transistor Connected, the second end of the triode is a first ground end, and the control end of the triode is connected to the signal receiving end.
  4. 根据权利要求3所述的编码芯片，其特征在于，所述MOS管的源极端和所述电压输入引脚之间通过二极管连接，所述二极管的正极与所述电压输入引脚连接，二极管的负极与所述MOS管的源极端连接。The encoding chip according to claim 3, wherein a source terminal of said MOS transistor and said voltage input pin are connected by a diode, and a positive electrode of said diode is connected to said voltage input pin, and said diode A negative electrode is connected to a source terminal of the MOS transistor.
  5. 根据权利要求4所述的编码芯片，其特征在于，所述编码电路还包括：The encoding chip according to claim 4, wherein the encoding circuit further comprises:
    防静电电容，所述防静电电容的一端和所述连接引脚连接，防静电电容的另一端为第二接地端。The antistatic capacitor has one end connected to the connecting pin and the other end of the antistatic capacitor being a second ground.
  6. 根据权利要求5所述的编码芯片，其特征在于，所述编码电路还包括：The encoding chip according to claim 5, wherein the encoding circuit further comprises:
    滤波电容，所述滤波电容的一端和所述信号接收端连接，滤波电 容的另一端和所述三极管的第二端连接。a filter capacitor, one end of the filter capacitor is connected to the signal receiving end, and the filter is filtered The other end of the capacitor is connected to the second end of the transistor.
  7. 根据权利要求1所述的编码芯片，其特征在于，所述连接引脚和所述高电平检测引脚之间连接有分压电阻。The code chip according to claim 1, wherein a voltage dividing resistor is connected between the connection pin and the high level detection pin.
  8. 根据权利要求2-7任一项所述的编码芯片，其特征在于，所述MOS管为PMOS管。The code chip according to any one of claims 2 to 7, wherein the MOS transistor is a PMOS transistor.
  9. 根据权利要求1所述的编码芯片，其特征在于，所述电压输入引脚的输入电压为24V。The code chip according to claim 1, wherein said voltage input pin has an input voltage of 24V.
  10. 一种电池监控单元，其特征在于，包括如权利要求1-9任一项所述的编码芯片。 A battery monitoring unit, comprising the encoding chip according to any one of claims 1-9.
PCT/CN2017/093112 2017-05-23 2017-07-17 Encoding chip and cell supervision circuit WO2018214262A1 (en)

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