CN108466554B - BMS multifunctional integrated power management circuit - Google Patents
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Abstract
本发明公开了一种BMS多功能集成电源管理电路，包括复位电路、芯片诊断控制电路、CAN网络通信电路和电源变换电路。所述复位电路包括开关S1、电阻R1和芯片U1。所述开关S1一端接VCC，所述开关S1另一端接芯片U1第16脚，同时连接至单片机I/O端口。所述电阻R1一端接VCC，所述电阻R1另一端接芯片U1第6脚，同时连接到单片机的复位管脚。所述芯片控制诊断电路包括芯片U1和单片机SPI通信端口。所述芯片U1与单片机通过SPI总线双向连接。本发明公开的BMS多功能集成电源管理电路，集成复位功能、CAN网络通信功能和低压电源分配功能，较好地简化了BMS电路的整体架构，电路形式简单、设计灵活、成本较低。
The invention discloses a BMS multifunctional integrated power management circuit, which includes a reset circuit, a chip diagnosis control circuit, a CAN network communication circuit and a power conversion circuit. The reset circuit includes a switch S1, a resistor R1 and a chip U1. One end of the switch S1 is connected to VCC, and the other end of the switch S1 is connected to the 16th pin of the chip U1 and is simultaneously connected to the I/O port of the microcontroller. One end of the resistor R1 is connected to VCC, and the other end of the resistor R1 is connected to the 6th pin of the chip U1 and is simultaneously connected to the reset pin of the microcontroller. The chip control diagnostic circuit includes chip U1 and a microcontroller SPI communication port. The chip U1 and the microcontroller are bidirectionally connected through the SPI bus. The BMS multifunctional integrated power management circuit disclosed by the invention integrates reset function, CAN network communication function and low-voltage power distribution function, which simplifies the overall structure of the BMS circuit and has simple circuit form, flexible design and low cost.
Description
技术领域Technical field
本发明属于电动汽车用电控设备技术领域，具体涉及一种BMS多功能集成电源管理电路。The invention belongs to the technical field of electronic control equipment for electric vehicles, and specifically relates to a BMS multifunctional integrated power management circuit.
背景技术Background technique
电动汽车用BMS系统，其基本保护功能包括过压、欠压、高温、低温、过流和短路保护，还包括绝缘监测、实时检测(温度、单体电压、总电压、总电流、 SOC、SOH、SOP等)、高压安全管理等功能。此外，BMS系统还兼具CAN网络通信功能、诊断功能、数据存储功能和系统自检功能等。The BMS system for electric vehicles has basic protection functions including overvoltage, undervoltage, high temperature, low temperature, overcurrent and short circuit protection, as well as insulation monitoring, real-time detection (temperature, cell voltage, total voltage, total current, SOC, SOH , SOP, etc.), high-voltage safety management and other functions. In addition, the BMS system also has CAN network communication functions, diagnostic functions, data storage functions and system self-test functions.
为了实现上述功能，BMS系统需要持续、稳定、可靠的用电环境。硬件上至少需要复位模块电路、CAN通信模块电路和低压电源分配电路。目前，国内外复位模块电路的解决方案主要采用专用复位管理系统或者采用带复位功能的稳压器；CAN通信模块电路方案主要采用专用CAN网络芯片；低压电源分配电路方案主要采用隔离变压器或者隔离电源模块又或者通过稳压器。显然，上述解决方案的硬件电路较为复杂、集成度不高、成本较高。In order to realize the above functions, the BMS system requires a continuous, stable and reliable power environment. The hardware requires at least a reset module circuit, a CAN communication module circuit and a low-voltage power distribution circuit. At present, domestic and foreign reset module circuit solutions mainly use dedicated reset management systems or voltage regulators with reset functions; CAN communication module circuit solutions mainly use dedicated CAN network chips; low-voltage power distribution circuit solutions mainly use isolation transformers or isolated power supplies module or through a voltage regulator. Obviously, the hardware circuit of the above solution is relatively complex, low in integration, and high in cost.
发明内容Contents of the invention
本发明针对现有技术的状况，提供一种BMS多功能集成电源管理电路。In view of the current state of the art, the present invention provides a BMS multifunctional integrated power management circuit.
本发明采用以下技术方案，所述BMS多功能集成电源管理电路包括复位电路、芯片诊断控制电路、CAN网络通信电路和电源变换电路，其中：The present invention adopts the following technical solution. The BMS multifunctional integrated power management circuit includes a reset circuit, a chip diagnostic control circuit, a CAN network communication circuit and a power conversion circuit, wherein:
所述复位电路包括开关S1、电阻R1和芯片U1，其中：The reset circuit includes switch S1, resistor R1 and chip U1, where:
所述开关S1一端接VCC，所述开关S1另一端接芯片U1第16脚，同时连接至单片机I/O端口；One end of the switch S1 is connected to VCC, and the other end of the switch S1 is connected to the 16th pin of the chip U1, and is also connected to the I/O port of the microcontroller;
所述电阻R1一端接VCC，所述电阻R1另一端接芯片U1第6脚，同时连接到单片机的复位管脚；One end of the resistor R1 is connected to VCC, and the other end of the resistor R1 is connected to the 6th pin of the chip U1 and at the same time connected to the reset pin of the microcontroller;
所述芯片控制诊断电路包括芯片U1和单片机SPI通信端口，其中：The chip control diagnostic circuit includes chip U1 and microcontroller SPI communication port, where:
所述芯片U1与单片机通过SPI总线双向连接；The chip U1 and the microcontroller are bidirectionally connected through the SPI bus;
所述CAN网络通信电路包括电容C1、电容C2、电阻R2、电阻R3、电容C3 和芯片U1，其中：The CAN network communication circuit includes capacitor C1, capacitor C2, resistor R2, resistor R3, capacitor C3 and chip U1, where:
所述电容C1一端接地，所述电容C1另一端接芯片U1第13脚，同时连接至单片机的CAN模块TX端口；One end of the capacitor C1 is connected to ground, and the other end of the capacitor C1 is connected to the 13th pin of the chip U1 and is simultaneously connected to the TX port of the CAN module of the microcontroller;
所述电容C2一端接地，所述电容C2另一端接芯片U1第14脚，同时连接至单片机的CAN模块RX端口；One end of the capacitor C2 is connected to ground, and the other end of the capacitor C2 is connected to the 14th pin of the chip U1 and is simultaneously connected to the RX port of the CAN module of the microcontroller;
所述电阻R2一端接芯片U1第21脚，所述电阻R2另一端接芯片U1第24 脚，同时连接至所述电容C3、所述电阻R3一端；One end of the resistor R2 is connected to the 21st pin of the chip U1, the other end of the resistor R2 is connected to the 24th pin of the chip U1, and is simultaneously connected to the capacitor C3 and one end of the resistor R3;
所述电阻R3另一端接芯片U1第22脚，所述电容C3另一端接地；The other end of the resistor R3 is connected to the 22nd pin of the chip U1, and the other end of the capacitor C3 is connected to the ground;
所述电源变换电路包括电容C4、二极管D1、TVS管D2、电容C5、电容C6、三极管Q1、电阻R4、电容C7、电容C8，其中：The power conversion circuit includes capacitor C4, diode D1, TVS tube D2, capacitor C5, capacitor C6, transistor Q1, resistor R4, capacitor C7, and capacitor C8, wherein:
所述电容C4一端接地，所述电容C4另一端接K30；One end of the capacitor C4 is connected to ground, and the other end of the capacitor C4 is connected to K30;
所述二极管D1正极接K30，所述二极管D1负极接芯片U1第32脚，同时连接至所述TVS负极、所述电容C5正极、所述电容C6一端、所述三极管Q1 发射极；The anode of the diode D1 is connected to K30, the cathode of the diode D1 is connected to the 32nd pin of the chip U1, and is simultaneously connected to the cathode of the TVS, the anode of the capacitor C5, one end of the capacitor C6, and the emitter of the transistor Q1;
所述TVS管D2正极接地，所述电容C5负极接地，所述电容C6另一端接地；The positive electrode of the TVS tube D2 is connected to the ground, the negative electrode of the capacitor C5 is connected to the ground, and the other end of the capacitor C6 is connected to the ground;
所述三极管Q1基极接芯片U1第31脚，所述三极管Q1集电极接芯片U1第 29脚，同时连接至所述电阻R4一端；The base of the transistor Q1 is connected to the 31st pin of the chip U1, the collector of the transistor Q1 is connected to the 29th pin of the chip U1, and is simultaneously connected to one end of the resistor R4;
所述电阻R4另一端接芯片U1第4脚，同时连接至所述电容C7正极、所述电容C8一端和电源VCC，所述电容C7负极接地，所述电容C8另一端接地。The other end of the resistor R4 is connected to the 4th pin of the chip U1, and is also connected to the positive electrode of the capacitor C7, one end of the capacitor C8 and the power supply VCC. The negative electrode of the capacitor C7 is connected to the ground, and the other end of the capacitor C8 is connected to the ground.
根据上述技术方案，所述复位电路中，所述开关S1具体实施为两针PIN针与跳冒的组合体。According to the above technical solution, in the reset circuit, the switch S1 is implemented as a combination of a two-pin PIN pin and a jumper.
根据上述技术方案，所述电源变换电路中，所述电阻R4封装为2512。According to the above technical solution, in the power conversion circuit, the resistor R4 is packaged as 2512.
根据上述技术方案，所述电源变换电路中，所述电容C7规格为100uF/16V。According to the above technical solution, in the power conversion circuit, the specification of the capacitor C7 is 100uF/16V.
根据上述技术方案，所述芯片U1型号为UJA1076。According to the above technical solution, the model of the chip U1 is UJA1076.
本发明公开的BMS多功能集成电源管理电路，其有益效果在于，集成复位功能、CAN网络通信功能和低压电源分配功能，较好地简化了BMS电路的整体架构，电路形式简单、设计灵活、成本较低。The beneficial effect of the BMS multifunctional integrated power management circuit disclosed by the present invention is that it integrates reset function, CAN network communication function and low-voltage power distribution function, which better simplifies the overall structure of the BMS circuit, and has simple circuit form, flexible design and low cost. lower.
附图说明Description of the drawings
图1是本发明优选实施例的复位电路的电路原理图。Figure 1 is a schematic circuit diagram of a reset circuit according to a preferred embodiment of the present invention.
图2是本发明优选实施例的芯片控制诊断电路的电路原理图。Figure 2 is a circuit schematic diagram of a chip control diagnostic circuit according to a preferred embodiment of the present invention.
图3是本发明优选实施例的CAN网络通信电路的电路原理图。Figure 3 is a schematic circuit diagram of a CAN network communication circuit according to a preferred embodiment of the present invention.
图4是本发明优选实施例的电源变换电路的电路原理图。Figure 4 is a schematic circuit diagram of a power conversion circuit according to a preferred embodiment of the present invention.
图5是本发明优选实施例的系统框图。Figure 5 is a system block diagram of a preferred embodiment of the present invention.
具体实施方式Detailed ways
本发明公开了一种BMS多功能集成电源管理电路，下面结合优选实施例，对本发明的具体实施方式作进一步描述。The present invention discloses a BMS multi-functional integrated power management circuit. The specific implementation manner of the present invention will be further described below in conjunction with the preferred embodiment.
值得一提的是，本发明专利申请涉及的BMS，其定义为BATTERY MANAGEMENTSYSTEM，即电池管理系统。It is worth mentioning that the BMS involved in the patent application of this invention is defined as BATTERY MANAGEMENTSYSTEM, that is, battery management system.
参见附图的图1至图5，图5示出了所述BMS多功能集成电源管理电路，图 1示出了复位电路的电路结构，图2示出了芯片控制诊断电路的电路结构，图 3示出了CAN网络通信电路的电路结构，图4示出了电源变换电路的电路结构。Referring to Figures 1 to 5 of the accompanying drawings, Figure 5 shows the BMS multifunctional integrated power management circuit. Figure 1 shows the circuit structure of the reset circuit. Figure 2 shows the circuit structure of the chip control diagnostic circuit. Figure 3 shows the circuit structure of the CAN network communication circuit, and Figure 4 shows the circuit structure of the power conversion circuit.
优选地，所述BMS多功能集成电源管理电路包括复位电路、芯片诊断控制电路、CAN网络通信电路和电源变换电路，其中：Preferably, the BMS multifunctional integrated power management circuit includes a reset circuit, a chip diagnostic control circuit, a CAN network communication circuit and a power conversion circuit, wherein:
所述复位电路用于确保单片机稳定可靠工作；The reset circuit is used to ensure the stable and reliable operation of the microcontroller;
所述芯片诊断控制电路用于确保电源芯片稳定可靠工作；The chip diagnostic control circuit is used to ensure the stable and reliable operation of the power chip;
所述CAN网络通信电路用于BMS系统和整车CAN、充电CAN以及内部CAN网络通信；The CAN network communication circuit is used for BMS system and vehicle CAN, charging CAN and internal CAN network communication;
所述电源变换电路用于得到稳定可靠电源电压。The power conversion circuit is used to obtain a stable and reliable power supply voltage.
其中，参见附图的图1，所述复位电路包括开关S1、电阻R1和芯片U1，其中：Wherein, referring to Figure 1 of the accompanying drawings, the reset circuit includes a switch S1, a resistor R1 and a chip U1, where:
所述开关S1一端接VCC，所述开关S1另一端接芯片U1第16脚，同时连接至单片机I/O端口；One end of the switch S1 is connected to VCC, and the other end of the switch S1 is connected to the 16th pin of the chip U1, and is also connected to the I/O port of the microcontroller;
所述电阻R1一端接VCC，所述电阻R1另一端接芯片U1第6脚，同时连接到单片机的复位管脚。One end of the resistor R1 is connected to VCC, and the other end of the resistor R1 is connected to the 6th pin of the chip U1 and is simultaneously connected to the reset pin of the microcontroller.
进一步地，所述复位电路中，所述开关S1具体实施为两针PIN针与跳冒的组合体。Further, in the reset circuit, the switch S1 is implemented as a combination of a two-pin PIN pin and a jumper.
其中，参见附图的图2，所述芯片控制诊断电路包括芯片U1和单片机SPI 通信端口，其中：Among them, referring to Figure 2 of the accompanying drawings, the chip control diagnostic circuit includes chip U1 and a single-chip microcomputer SPI communication port, where:
所述芯片U1与单片机通过SPI总线双向连接并且交互数据。The chip U1 and the microcontroller are bidirectionally connected through the SPI bus and exchange data.
其中，参见附图的图3，所述CAN网络通信电路包括电容C1、电容C2、电阻R2、电阻R3、电容C3和芯片U1，其中：Among them, referring to Figure 3 of the accompanying drawings, the CAN network communication circuit includes a capacitor C1, a capacitor C2, a resistor R2, a resistor R3, a capacitor C3 and a chip U1, wherein:
所述电容C1一端接地，所述电容C1另一端接芯片U1第13脚，同时连接至单片机的CAN模块TX端口；One end of the capacitor C1 is connected to ground, and the other end of the capacitor C1 is connected to the 13th pin of the chip U1 and is simultaneously connected to the TX port of the CAN module of the microcontroller;
所述电容C2一端接地，所述电容C2另一端接芯片U1第14脚，同时连接至单片机的CAN模块RX端口；One end of the capacitor C2 is connected to ground, and the other end of the capacitor C2 is connected to the 14th pin of the chip U1 and is simultaneously connected to the RX port of the CAN module of the microcontroller;
所述电阻R2一端接芯片U1第21脚，所述电阻R2另一端接芯片U1第24 脚，同时连接至所述电容C3、所述电阻R3一端；One end of the resistor R2 is connected to the 21st pin of the chip U1, the other end of the resistor R2 is connected to the 24th pin of the chip U1, and is simultaneously connected to the capacitor C3 and one end of the resistor R3;
所述电阻R3另一端接芯片U1第22脚，所述电容C3另一端接地。The other end of the resistor R3 is connected to the 22nd pin of the chip U1, and the other end of the capacitor C3 is connected to the ground.
其中，参见附图的图4，所述电源变换电路包括电容C4、二极管D1、TVS管 D2、电容C5、电容C6、三极管Q1、电阻R4、电容C7、电容C8，其中：Referring to Figure 4 of the accompanying drawings, the power conversion circuit includes a capacitor C4, a diode D1, a TVS tube D2, a capacitor C5, a capacitor C6, a transistor Q1, a resistor R4, a capacitor C7, and a capacitor C8, wherein:
所述电容C4一端接地，所述电容C4另一端接K30；One end of the capacitor C4 is connected to ground, and the other end of the capacitor C4 is connected to K30;
所述二极管D1正极接K30，所述二极管D1负极接芯片U1第32脚，同时连接至所述TVS负极、所述电容C5正极、所述电容C6一端、所述三极管Q1发射极；The anode of the diode D1 is connected to K30, the cathode of the diode D1 is connected to the 32nd pin of the chip U1, and is simultaneously connected to the cathode of the TVS, the anode of the capacitor C5, one end of the capacitor C6, and the emitter of the transistor Q1;
所述TVS管D2正极接地，所述电容C5负极接地，所述电容C6另一端接地；The positive electrode of the TVS tube D2 is connected to the ground, the negative electrode of the capacitor C5 is connected to the ground, and the other end of the capacitor C6 is connected to the ground;
所述三极管Q1基极接芯片U1第31脚，所述三极管Q1集电极接芯片U1第 29脚，同时连接至所述电阻R4一端；The base of the transistor Q1 is connected to the 31st pin of the chip U1, the collector of the transistor Q1 is connected to the 29th pin of the chip U1, and is simultaneously connected to one end of the resistor R4;
所述电阻R4另一端接芯片U1第4脚，同时连接至所述电容C7正极、所述电容C8一端和电源VCC，所述电容C7负极接地，所述电容C8另一端接地。The other end of the resistor R4 is connected to the 4th pin of the chip U1, and is also connected to the positive electrode of the capacitor C7, one end of the capacitor C8 and the power supply VCC. The negative electrode of the capacitor C7 is connected to the ground, and the other end of the capacitor C8 is connected to the ground.
进一步地，所述电源变换电路中，所述电阻R4封装为2512。Further, in the power conversion circuit, the resistor R4 is packaged as 2512.
进一步地，所述电源变换电路中，如果电路需要增加，所述三极管Q1可并联使用。Furthermore, in the power conversion circuit, if the circuit needs to be increased, the transistor Q1 can be used in parallel.
进一步地，所述电源变换电路中，所述电容C7规格为100uF/16V。Further, in the power conversion circuit, the specification of the capacitor C7 is 100uF/16V.
进一步地，所述电源变换电路中，所述芯片U1需考虑发热量。Furthermore, in the power conversion circuit, the heat generated by the chip U1 needs to be considered.
值得一提的是，本发明专利申请公开的BMS多功能集成电源管理电路，所述芯片U1型号为UJA1076。It is worth mentioning that the model of the chip U1 of the BMS multi-functional integrated power management circuit disclosed in the patent application of the present invention is UJA1076.
值得一提的是，本发明专利申请公开的BMS多功能集成电源管理电路，所述单片机型号为MC9S12G64。所述单片机集成CAN网络通信模块、SPI通信模块等功能。It is worth mentioning that the BMS multi-function integrated power management circuit disclosed in the patent application of the present invention, the single-chip microcomputer model is MC9S12G64. The microcontroller integrates CAN network communication module, SPI communication module and other functions.
值得一提的是，本发明专利申请公开的BMS多功能集成电源管理电路，其最大输出电流可达1A，可满足市场上大部分BMS供电需求。It is worth mentioning that the BMS multi-functional integrated power management circuit disclosed in the patent application of this invention has a maximum output current of up to 1A, which can meet the power supply needs of most BMSs on the market.
对于本领域的技术人员而言，依然可以对前述各实施例所记载的技术方案进行修改，或对其中部分技术特征进行等同替换，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围。For those skilled in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments, or to make equivalent substitutions for some of the technical features. Any modifications, Equivalent substitutions, improvements, etc. shall be included in the protection scope of the present invention.
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