CN107276407B - A PTC power management system for electric vehicles - Google Patents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/157—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/1566—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with means for compensating against rapid load changes, e.g. with auxiliary current source, with dual mode control or with inductance variation
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
一种电动汽车用PTC电源管理系统，属于新能源电动汽车用电控领域。本发明电动汽车用PTC电源管理系统包括系统电源输入端、输入电源单元、上下电模式单元、输出电源单元、主控单元；输入电源单元包括为主控单元提供输入的分压采集电路、为上下电模式单元供电的时序供电电路、分别与主控单元和电动汽车控制器连接的主开关电路；系统电源输入端分别连接分压采集电路和时序供电电路，时序供电电路连接主开关电路，主开关电路还输出两路信号，一路模式输入信号输入至上下电模式单元，一路上拉信号输入至输出电源单元；上下电模式单元输出电源给主控单元；输出电源单元输出电源给PTC驱动电源。本发明进行动态负载调制，减少能量损耗，提高电源管理系统可靠性及使用寿命。
A PTC power management system for electric vehicles belongs to the field of electric control for new energy electric vehicles. The PTC power management system for electric vehicles of the present invention includes a system power input terminal, an input power unit, a power-on/off mode unit, an output power unit, and a main control unit; The sequential power supply circuit for the power supply of the electric mode unit, the main switch circuit connected with the main control unit and the electric vehicle controller respectively; The circuit also outputs two signals, one mode input signal is input to the power-on mode unit, and the pull-up signal is input to the output power unit; the power-on mode unit outputs power to the main control unit; the output power unit outputs power to the PTC drive power. The invention performs dynamic load modulation, reduces energy loss, and improves the reliability and service life of the power management system.
Description
技术领域technical field
本发明涉及新能源电动汽车用电控技术领域，尤其涉及一种电动汽车用PTC电源管理系统。The invention relates to the technical field of electronic control for new energy electric vehicles, in particular to a PTC power management system for electric vehicles.
背景技术Background technique
当前电动汽车的续航里程已从原先的一百多公里增加到现在三百公里左右，按照现在的技术进展，预计到2020年左右，续航里程可达500公里左右。因此技术的每一次提升一直在优化续航里程并减少能量损耗，纵观整个车辆除了动力系统消耗能源驱动车辆行驶外，尽可能减少舒适性空调系统的能量消耗成为当前迫切需要解决的技术难题。At present, the cruising range of electric vehicles has increased from more than 100 kilometers to about 300 kilometers. According to the current technological progress, it is estimated that by 2020, the cruising range will reach about 500 kilometers. Therefore, every improvement in technology has been optimizing the cruising range and reducing energy loss. Looking at the entire vehicle, in addition to the energy consumed by the power system to drive the vehicle, reducing the energy consumption of the comfort air-conditioning system as much as possible has become an urgent technical problem that needs to be solved.
PTC属于电动汽车中特别重要的部件，是属于空调系统中的加热部分，也是能量损耗比较大的一个部件，其功率有几千瓦到十千瓦不等，对应到一辆整车来说，还是比较大的，因此如果不加入合理的电源管理并对其上下电进行有效控制分配，将对电动汽车电池性能产生很大的影响，进而影响到整个车辆行驶续航里程，根据目前实际的经验，PTC系统所消耗的能量将会使续航里程减少约12%左右，不同的车辆稍有差异。这将使得车辆的行驶续航里程产生比较大的影响。PTC is a particularly important component in electric vehicles. It belongs to the heating part of the air conditioning system, and it is also a component with relatively large energy loss. Large, so if you do not add reasonable power management and effectively control the distribution of power on and off, it will have a great impact on the performance of the electric vehicle battery, which in turn will affect the driving range of the entire vehicle. According to the current actual experience, the PTC system The energy consumed will reduce the cruising range by about 12%, which is slightly different for different vehicles. This will have a relatively large impact on the driving range of the vehicle.
传统的机械式控制方案中由于无法采用电子模式控制，故而逐渐被各大车厂所淘汰，从目前了解来看几乎每个主机厂和一些零部件供应商都在开发类似产品，产品的难点在于需要和车辆控制器进行通讯和整个系统电源管理。整车厂一般对零部件尤其这种新型控制系统的电源比较陌生，而现时的整车控制器一般都是主机厂自己开发控制，由于零部件供应商不熟悉整个控制系统的控制策略和具体方案，很难做到产品体积轻量化，功能齐全和高效化，电源管理这块效率不高，且成本也很高，已无法满足新能源电动汽车市场需求，因此需要一种新型自动控制高效电源系统控制的新型PTC电源管理系统来实现这一迫切需求。The traditional mechanical control scheme is gradually eliminated by major car manufacturers because it cannot adopt electronic mode control. From the current understanding, almost every OEM and some parts suppliers are developing similar products. The difficulty of the product lies in the need and The vehicle controller performs communications and overall system power management. OEMs are generally unfamiliar with components, especially the power supply of this new type of control system, and the current vehicle controllers are generally developed and controlled by OEMs themselves, because component suppliers are not familiar with the control strategy and specific solutions of the entire control system , it is difficult to achieve light weight, complete functions and high efficiency of the product. The efficiency of power management is not high, and the cost is also high, which can no longer meet the market demand of new energy electric vehicles. Therefore, a new type of automatic control high-efficiency power supply system is needed Controlled new PTC power management system to achieve this urgent demand.
发明内容Contents of the invention
本发明针对现有技术存在的问题，提出了一种电动汽车用PTC电源管理系统。Aiming at the problems existing in the prior art, the invention proposes a PTC power supply management system for electric vehicles.
本发明是通过以下技术方案得以实现的：The present invention is achieved through the following technical solutions:
电动汽车用PTC电源管理系统，包括系统电源输入端、输入电源单元、上下电模式单元、输出电源单元、主控单元；所述输入电源单元包括为所述主控单元提供输入的分压采集电路、为所述上下电模式单元供电的时序供电电路、分别与所述主控单元和电动汽车控制器连接的主开关电路；系统电源输入端分别连接所述分压采集电路和所述时序供电电路，所述时序供电电路连接所述主开关电路，所述主开关电路还输出两路信号，一路模式输入信号输入至所述上下电模式单元，一路上拉信号输入至所述输出电源单元；所述上下电模式单元输出电源给所述主控单元；所述输出电源单元输出电源给PTC驱动电源。The PTC power management system for electric vehicles includes a system power input terminal, an input power unit, a power-on/off mode unit, an output power unit, and a main control unit; the input power unit includes a voltage-dividing acquisition circuit that provides input for the main control unit , a sequential power supply circuit for supplying power to the power-on and power-off mode unit, a main switch circuit connected to the main control unit and the electric vehicle controller respectively; the system power input terminal is respectively connected to the voltage-dividing acquisition circuit and the sequential power supply circuit , the sequential power supply circuit is connected to the main switch circuit, and the main switch circuit also outputs two signals, one mode input signal is input to the power-on/off mode unit, and one pull-up signal is input to the output power supply unit; The power-on/off mode unit outputs power to the main control unit; the output power unit outputs power to the PTC drive power.
作为优选，所述分压采集电路包括第一电阻、第二电阻、第一电容；系统电源输入端经所述第一电阻分别与所述第二电阻、所述第一电容连接后接地。Preferably, the voltage division acquisition circuit includes a first resistor, a second resistor, and a first capacitor; the system power input terminal is connected to the second resistor and the first capacitor via the first resistor respectively, and then grounded.
作为优选，所述时序供电电路包括第二电容、第三电容、第一电感、第四电容、第五电容；系统电源输入端经相互并联的所述第二电容和所述第三电容后连接所述第一电感，所述第一电感连接相互并联的所述第四电容和第五电容后接地。Preferably, the sequential power supply circuit includes a second capacitor, a third capacitor, a first inductor, a fourth capacitor, and a fifth capacitor; the input terminal of the system power supply is connected via the second capacitor and the third capacitor connected in parallel The first inductance is connected to the fourth capacitor and the fifth capacitor connected in parallel and grounded.
作为优选，所述输入电源单元还包括由第十四电容、双向稳压管和第一二极管构成的信号处理电路；系统电源输入端分别经所述第十四电容、所述双向稳压管接地，系统电源输入端经所述第一二极管与所述时序供电电路连接。Preferably, the input power supply unit further includes a signal processing circuit composed of a fourteenth capacitor, a bidirectional voltage regulator and a first diode; The tube is grounded, and the input end of the system power supply is connected to the sequential power supply circuit through the first diode.
作为优选，所述主开关电路包括第三电阻、第四电阻、第六电容、第一齐纳二极管、第一MOS管；所述第六电容和所述第一齐纳二极管并联后与所述第四电阻串联，所述第三电阻并联在所述第四电阻和所述第六电容之间，所述第三电阻和所述第四电阻共同输出端分别连接所述主控单元和电动汽车控制器；所述第一MOS管的漏极连接所述第一齐纳二极管的阴极，所述第一齐纳二极管的阳极连接所述第四电阻，所述第一MOS管的栅极连接所述第一齐纳二极管的阳极，所述第一MOS管的源极用于分别输出模式输入信号和上拉信号。Preferably, the main switch circuit includes a third resistor, a fourth resistor, a sixth capacitor, a first Zener diode, and a first MOS transistor; the sixth capacitor and the first Zener diode are connected in parallel with the The fourth resistor is connected in series, the third resistor is connected in parallel between the fourth resistor and the sixth capacitor, and the common output terminals of the third resistor and the fourth resistor are respectively connected to the main control unit and the electric vehicle A controller; the drain of the first MOS transistor is connected to the cathode of the first Zener diode, the anode of the first Zener diode is connected to the fourth resistor, and the gate of the first MOS transistor is connected to the The anode of the first zener diode, and the source of the first MOS transistor are used to output mode input signals and pull-up signals respectively.
作为优选，所述第一MOS管的源极在输出模式输入信号和上拉信号之前经滤波电路滤波。Preferably, the source of the first MOS transistor is filtered by a filter circuit before outputting the mode input signal and the pull-up signal.
作为优选，所述上下电模式单元包括第一稳压电路、第一开关电路、接口供电电路以及降压供电电路；所述主开关电路输出模式输入信号依次给所述第一稳压电路、所述第一开关电路、所述接口供电电路；所述主开关电路还输出模式输入信号给所述降压供电电路；时序供电电路输出时序供电信号至所述第一开关电路。Preferably, the power-on/off mode unit includes a first voltage stabilizing circuit, a first switch circuit, an interface power supply circuit, and a step-down power supply circuit; the main switching circuit outputs mode input signals to the first voltage stabilizing circuit, the The first switch circuit, the interface power supply circuit; the main switch circuit also outputs a mode input signal to the step-down power supply circuit; the sequential power supply circuit outputs a sequential power supply signal to the first switch circuit.
作为优选，所述输出电源单元包括第二稳压电路、负载动态调节电路、反激式电路；所述上拉信号经所述第二稳压电路分别连接所述负载动态调节电路和所述反激式电路，所述反激式电路输出电源给PTC驱动电源。Preferably, the output power supply unit includes a second voltage stabilization circuit, a load dynamic adjustment circuit, and a flyback circuit; the pull-up signal is connected to the load dynamic adjustment circuit and the flyback circuit through the second voltage stabilization circuit, respectively. An exciting circuit, the flyback circuit outputs power to the PTC driving power.
作为优选，所述负载动态调节电路包括PWM芯片、第五电阻、第六电阻、第七电阻、第八电阻、第九电阻、第十电阻、第十一电阻、第十二电阻、第十三电阻、第十四电阻、第八电容、第九电容、第十电容、第十一电容、第十二电容、第十三电容、第二MOS管、第二二极管；所述PWM芯片的运行端分别经所述第五电阻连接所述第二稳压电路，经所述第六电阻接地；所述PWM芯片的阈值电流端依次经所述第七电阻、第八电容接地；所述PWM芯片的反馈端分别经所述第八电阻接地，经所述第十电阻连接所述第二二极管的阴极，所述第二二极管的阳极连接所述反激式电路；所述PWM芯片的频率端经所述第九电阻接地；所述PWM芯片的模式端/同步端经所述第十电容接地；所述PWM芯片的输入电源端也经所述第十电容接地；所述PWM芯片的感应端分别连接所述第十二电容和所述第十二电阻；所述电压输入端分别经所述第十一电容接地，经所述第十一电阻与所述第二稳压电路连接；所述PWM芯片的门极端连接所述第二MOS管的栅极，所述第二MOS管的源极依次连接所述第十四电阻、所述第十三电容接地，所述第二MOS管的源极还连接所述反激式电路；所述第二MOS管的漏极分别连接所述第十二电阻和所述第十三电阻；所述第十二电容和所述第十三电阻分别接地。Preferably, the load dynamic adjustment circuit includes a PWM chip, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor resistor, fourteenth resistor, eighth capacitor, ninth capacitor, tenth capacitor, eleventh capacitor, twelfth capacitor, thirteenth capacitor, second MOS tube, second diode; the PWM chip The running terminal is respectively connected to the second voltage stabilizing circuit through the fifth resistor, and grounded through the sixth resistor; the threshold current terminal of the PWM chip is grounded through the seventh resistor and the eighth capacitor in turn; the PWM The feedback terminals of the chip are respectively grounded through the eighth resistor, connected to the cathode of the second diode through the tenth resistor, and the anode of the second diode is connected to the flyback circuit; the PWM The frequency terminal of the chip is grounded through the ninth resistor; the mode terminal/synchronous terminal of the PWM chip is grounded through the tenth capacitor; the input power terminal of the PWM chip is also grounded through the tenth capacitor; the PWM The sensing terminal of the chip is respectively connected to the twelfth capacitor and the twelfth resistor; the voltage input terminal is respectively grounded through the eleventh capacitor, and connected to the second voltage stabilizing circuit through the eleventh resistor connection; the gate terminal of the PWM chip is connected to the gate of the second MOS transistor, the source of the second MOS transistor is connected to the fourteenth resistor and the thirteenth capacitor to ground in turn, and the second The source of the MOS transistor is also connected to the flyback circuit; the drain of the second MOS transistor is respectively connected to the twelfth resistor and the thirteenth resistor; the twelfth capacitor and the tenth resistor The three resistors are grounded respectively.
作为优选，所述输出电源单元还包括过滤电路，所述过滤电路连接于所述负载动态调节电路和所述反激式电路之间本发明具有以下有益效果：Preferably, the output power supply unit further includes a filter circuit, and the filter circuit is connected between the load dynamic adjustment circuit and the flyback circuit. The present invention has the following beneficial effects:
本发明一种电动汽车用PTC电源管理系统，利用高效电源芯片和PWM输出并通过合理的电路接口匹配设计，进行输入-输出-负载动态调制，科学管理能源。根据对电流、电压等采集诊断环路反馈给主控单元和电源芯片，根据系统算法分析实时动态调整PWM调整输出电压响应，形成自动控制，并根据空调系统控制上下电时间，进入不同模式 ,能高效实现调节，减少能量损耗，带来高寿命高效率，且设计简单，可靠性高，实现低成本高效率，很好地解决了管理控制、成本和信赖性等这一系列问题。The invention relates to a PTC power supply management system for electric vehicles, which utilizes high-efficiency power supply chips and PWM output and through a reasonable circuit interface matching design, performs input-output-load dynamic modulation, and scientifically manages energy. Feedback to the main control unit and power supply chip according to the collection and diagnosis loop of current and voltage, and dynamically adjust PWM to adjust the output voltage response in real time according to the system algorithm analysis to form automatic control, and control the power-on and power-off time according to the air-conditioning system to enter different modes. Efficiently realize adjustment, reduce energy loss, bring high life and high efficiency, and have simple design, high reliability, low cost and high efficiency, and solve a series of problems such as management control, cost and reliability.
附图说明Description of drawings
图1为本发明电动汽车用PTC电源管理系统的原理框图；Fig. 1 is the functional block diagram of PTC power management system for electric vehicle of the present invention;
图2为本发明电动汽车用PTC电源管理系统的输入电源单元的电路图；Fig. 2 is the circuit diagram of the input power unit of PTC power management system for electric vehicle of the present invention;
图3为本发明电动汽车用PTC电源管理系统的上下电模式单元的电路图；Fig. 3 is the circuit diagram of the power on and off mode unit of the PTC power management system for electric vehicles of the present invention;
图4为本发明电动汽车用PTC电源管理系统的输出电源单元的电路图；Fig. 4 is the circuit diagram of the output power supply unit of PTC power supply management system for electric vehicle of the present invention;
图5为本发明电动汽车用PTC电源管理系统中电源信号供给框图。Fig. 5 is a block diagram of power signal supply in the PTC power management system for electric vehicles of the present invention.
具体实施方式Detailed ways
以下是本发明的具体实施例并结合附图，对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
如图1，本发明一种电动汽车用PTC电源管理系统包括输入电源单元、上下电模式单元、输出电源单元、主控单元。系统电源输入端，一般为外部小电池9-16V供给，输入至该电源管理系统。所述输入电源单元分别连接所述上下电模式单元、输出电源单元和所述主控单元。As shown in Fig. 1, a PTC power management system for an electric vehicle according to the present invention includes an input power unit, a power-on/off mode unit, an output power unit, and a main control unit. The system power input terminal is generally supplied by an external small battery 9-16V, which is input to the power management system. The input power unit is respectively connected to the power-on/off mode unit, the output power unit and the main control unit.
所述主控单元包括MCU及其外围电路。所述MCU一般采用MC9S12G64型号芯片。The main control unit includes MCU and its peripheral circuits. The MCU generally adopts MC9S12G64 chip.
具体参照如图2-5，所述输入电源单元包括分压采集电路、时序供电电路、主开关电路。系统电源输入端KL30一路经所述时序供电电路与所述主开关电路连接，具体来说，该路经所述时序供电电路输出KL_30 FILT给所述上下电模式单元，为其提供时序供电输入，经所述主开关电路一方面输出PSU信号分别给主控单元和电动汽车控制器，另一方面输出模式输入信号KL30_SWITCH给所述上下电模式单元、输出上拉信号KL30_PULLLUP给所述输出电源单元；另一路与所述分压采集电路连接，为主控单元提供输入，对外部小电池的动态输入进行监控，并根据具体瞬态负载来调整和保护。所述上下电模式单元输出5V_SWITCH供给与所述主控单元连接的接口和采集电源，输出5V_CORE供给主控单元以及电动汽车内的can电源。所述输出电源单元输出电源给PTC驱动电源。其中，PSU信号输出端分别连接主控单元和经KL15开关电路连接电动汽车控制器，用于工作后，前述KL15断电后，其保持低电平起到维持回路工作状态；掉电保护及唤醒功能等。Referring specifically to Figures 2-5, the input power unit includes a voltage division acquisition circuit, a sequential power supply circuit, and a main switch circuit. The system power supply input terminal KL30 is connected to the main switch circuit via the sequential power supply circuit. Specifically, the circuit outputs KL_30 FILT to the power-on/off mode unit through the sequential power supply circuit to provide sequential power supply input for it. On the one hand, the main switch circuit outputs the PSU signal to the main control unit and the electric vehicle controller, on the other hand, outputs the mode input signal KL30_SWITCH to the power-on/off mode unit, and outputs the pull-up signal KL30_PULLLUP to the output power unit; The other circuit is connected with the voltage division acquisition circuit, which provides input to the main control unit, monitors the dynamic input of the external small battery, and adjusts and protects it according to the specific transient load. The power-on and power-off mode unit outputs 5V_SWITCH to supply the interface connected with the main control unit and the acquisition power, and outputs 5V_CORE to supply the main control unit and the can power in the electric vehicle. The output power unit outputs power to the PTC driving power. Among them, the PSU signal output terminal is respectively connected to the main control unit and the electric vehicle controller through the KL15 switch circuit. function etc.
如图2，所述分压采集电路包括第一电阻R63、第二电阻R64、第一电容C53。系统电源输入端KL30经所述第一电阻R63分别与所述第二电阻R64、所述第一电容C53连接后接地。通过采样电阻采集反馈后进入主控系统监控的输入源，当输入源过高或过低被检测后，进入相应的负载控制输出。As shown in FIG. 2 , the voltage division acquisition circuit includes a first resistor R63, a second resistor R64, and a first capacitor C53. The system power input terminal KL30 is respectively connected to the second resistor R64 and the first capacitor C53 via the first resistor R63 and then grounded. After the feedback is collected through the sampling resistor, it enters the input source monitored by the main control system. When the input source is detected to be too high or too low, it enters the corresponding load control output.
所述时序供电电路包括第二电容C43、第三电容C44、第一电感L1、第四电容C41、第五电容C42。系统电源输入端KL30经相互并联的所述第二电容C43和所述第三电容C44后连接所述第一电感L1 ，所述第一电感L1连接相互并联的所述第四电容C41和第五电容C42后接地。系统电源输入端KL30电源经该时序供电电路滤波处理后输出KL_30 FILT给所述上下电模式单元。The sequential power supply circuit includes a second capacitor C43, a third capacitor C44, a first inductor L1, a fourth capacitor C41, and a fifth capacitor C42. The system power supply input terminal KL30 is connected to the first inductance L1 after the second capacitor C43 and the third capacitor C44 connected in parallel, and the first inductance L1 is connected to the fourth capacitor C41 and the fifth capacitor connected in parallel to each other. After the capacitor C42 is grounded. The KL30 power supply at the system power input terminal is filtered by the sequential power supply circuit and then outputs KL_30 FILT to the power-on/off mode unit.
所述主开关电路包括第三电阻R57、第四电阻R58、第六电容C49、第一齐纳二极管Z1、第一MOS管Q1。所述第六电容C49和所述第一齐纳二极管Z1并联后与所述第四电阻R58串联。所述第三电阻R57并联在所述第四电阻R58和所述第六电容C49之间。所述第三电阻R57和所述第四电阻R58共同输出端为PSU端，分别连接所述主控单元和电动汽车控制器。所述第一MOS管Q1的漏极连接所述第一齐纳二极管Z1的阴极，所述第一齐纳二极管Z1 的阳极连接所述第四电阻R58，所述第一MOS管Q1的栅极连接所述第一齐纳二极管Z1的阳极。所述第一MOS管Q1的源极用于分别输出模式输入信号KL30_SWITCH和上拉信号KL30_PULLLUP。The main switch circuit includes a third resistor R57, a fourth resistor R58, a sixth capacitor C49, a first Zener diode Z1, and a first MOS transistor Q1. The sixth capacitor C49 is connected in parallel with the first Zener diode Z1 and connected in series with the fourth resistor R58. The third resistor R57 is connected in parallel between the fourth resistor R58 and the sixth capacitor C49. The common output terminal of the third resistor R57 and the fourth resistor R58 is a PSU terminal, which is respectively connected to the main control unit and the electric vehicle controller. The drain of the first MOS transistor Q1 is connected to the cathode of the first Zener diode Z1, the anode of the first Zener diode Z1 is connected to the fourth resistor R58, and the gate of the first MOS transistor Q1 Connect the anode of the first Zener diode Z1. The source of the first MOS transistor Q1 is used to output the mode input signal KL30_SWITCH and the pull-up signal KL30_PULLLUP respectively.
为了获得较纯净的电源输入，在所述时序供电电路之前设置信号处理电路。所述信号处理电路包括第十四电容C50、双向稳压管D7和第一二极管D5。系统电源输入端分别经所述第十四电容C50、所述双向稳压管D7接地，系统电源输入端KL30经所述第一二极管D5与所述时序供电电路连接。利用该信号处理电路对外部来自小电池的供电进行前级瞬态吸收、整流，处理后提供给后级电路使用。In order to obtain relatively pure power input, a signal processing circuit is provided before the sequential power supply circuit. The signal processing circuit includes a fourteenth capacitor C50, a bidirectional voltage regulator D7 and a first diode D5. The input end of the system power supply is connected to the ground through the fourteenth capacitor C50 and the bidirectional voltage regulator D7, and the input end KL30 of the system power supply is connected to the sequential power supply circuit through the first diode D5. The signal processing circuit is used to absorb and rectify the front-stage transient of the external power supply from the small battery, and provide it to the rear-stage circuit after processing.
为了输出稳定模式输入信号KL30_SWITCH和上拉信号KL30_PULLLUP，所述第一MOS管Q1的源极在输出模式输入信号和上拉信号之前经滤波电路滤波。如，将电容一端与第一MOS管的源极连接，另一端接地。另，在所述模式输入信号KL30_SWITCH和上拉信号KL30_PULLLUP之间连接有单向稳压管D6，其阳极端连接模式输入信号KL30_SWITCH，其阴极端连接上拉信号KL30_PULLLUP，以保护电源稳定输出。In order to output the stable mode input signal KL30_SWITCH and the pull-up signal KL30_PULLLUP, the source of the first MOS transistor Q1 is filtered by a filter circuit before outputting the mode input signal and the pull-up signal. For example, one end of the capacitor is connected to the source of the first MOS transistor, and the other end is grounded. In addition, a unidirectional regulator D6 is connected between the mode input signal KL30_SWITCH and the pull-up signal KL30_PULLLUP, its anode terminal is connected to the mode input signal KL30_SWITCH, and its cathode terminal is connected to the pull-up signal KL30_PULLLUP to protect the stable output of the power supply.
当来自小电池电压的KL30输入正常时，一般为9-16V之间，通常在13V左右，在经过信号处理电路进行防浪涌及滤波吸收处理。处理后的信号一路通过分压采集电路输送给主控单元和电动汽车控制器，一路经时序供电电路输出电源KL30_FILT为后面模式供电提供时序供电输入作为输入，之后经主开关电路。主开关电路一方面输出PSU信号，经过时序供电电路输出的电源通过电动汽车控制器使能信号触发，使得PSU端为低电平。使得该电源管理系统处于低功耗模式，负载等输出不被激活；当第一MOS管导通后形成两路供电输出；主开关电路另一方面输出的两路供电电路，分别为KL30_SWITCH、KL30_PULLLUP，它们作为初级输出给上下电模式单元和输出电源单元。When the KL30 input from the small battery voltage is normal, it is generally between 9-16V, usually around 13V, and is processed by the signal processing circuit for anti-surge and filter absorption. The processed signal is sent to the main control unit and the electric vehicle controller through the voltage-dividing acquisition circuit one way, and the output power supply KL30_FILT through the sequential power supply circuit provides sequential power supply input as input for the power supply of the following modes, and then passes through the main switch circuit. On the one hand, the main switch circuit outputs the PSU signal, and the power output by the sequential power supply circuit is triggered by the enable signal of the electric vehicle controller, so that the PSU terminal is at a low level. The power management system is in low power consumption mode, and the load and other outputs are not activated; when the first MOS tube is turned on, two power supply outputs are formed; the two power supply circuits output by the main switch circuit on the other hand are KL30_SWITCH, KL30_PULLLUP , they serve as primary outputs to the power-down mode unit and the output power unit.
如图3，所述上下电模式单元包括第一稳压电路、第一开关电路、接口供电电路以及降压供电电路。所述主开关电路输出模式输入信号依次给所述第一稳压电路、所述第一开关电路、所述接口供电电路。所述主开关电路还输出模式输入信号给所述降压供电电路。时序供电电路输出时序供电信号至所述第一开关电路。As shown in FIG. 3 , the power-on/off mode unit includes a first voltage stabilizing circuit, a first switch circuit, an interface power supply circuit and a step-down power supply circuit. The main switch circuit outputs mode input signals to the first voltage stabilizing circuit, the first switch circuit, and the interface power supply circuit in sequence. The main switch circuit also outputs a mode input signal to the step-down power supply circuit. The sequential power supply circuit outputs a sequential power supply signal to the first switch circuit.
具体地，所述第一稳压电路包括第三二极管D8、第十四电阻R69、第十五电阻R68。KL30_SWITCH连接所述第三二极管D8的阴极，所述第三二极管D8的阳极连接所述第十四电阻R69接地以及还经所述第十五电阻R68连接所述第一开关电路。Specifically, the first voltage stabilizing circuit includes a third diode D8, a fourteenth resistor R69, and a fifteenth resistor R68. KL30_SWITCH is connected to the cathode of the third diode D8, and the anode of the third diode D8 is connected to the ground of the fourteenth resistor R69 and also connected to the first switch circuit through the fifteenth resistor R68.
所述第一开关电路包括第一三极管Q5、第十六电阻R65、第三MOS管Q6、第十七电阻R66、第十八电阻R67、第二齐纳二极管Z2、第四MOS管Q4。所述第一三极管Q5的基极连接所述第十五电阻R68，所述第一三极管Q5的集电极分别连接所述第十六电阻R65、所述第三MOS管Q6的栅极、以及接口供电电路，所述第一三极管Q5的发射极连接所述第三MOS管Q6的漏极。所述第三MOS管Q6的源极分别连接所述第十七电阻R66、所述第十八电阻R67；所述第十八电阻R67一端连接所述第三MOS管Q6的源极，另一端连接所述第二齐纳二极管Z2的阳极，另一端还连接所述第四MOS管的栅极。所述第四MOS管的漏极连接接口供电电路。KL_30 FILT分别连接所述第四MOS管的源极、所述第二齐纳二极管Z2的阴极、第十六电阻R6、第十七电阻R66。The first switch circuit includes a first triode Q5, a sixteenth resistor R65, a third MOS transistor Q6, a seventeenth resistor R66, an eighteenth resistor R67, a second Zener diode Z2, and a fourth MOS transistor Q4 . The base of the first transistor Q5 is connected to the fifteenth resistor R68, and the collector of the first transistor Q5 is respectively connected to the sixteenth resistor R65 and the gate of the third MOS transistor Q6. pole, and an interface power supply circuit, the emitter of the first triode Q5 is connected to the drain of the third MOS transistor Q6. The source of the third MOS transistor Q6 is respectively connected to the seventeenth resistor R66 and the eighteenth resistor R67; one end of the eighteenth resistor R67 is connected to the source of the third MOS transistor Q6, and the other end The anode of the second Zener diode Z2 is connected, and the other end is also connected to the gate of the fourth MOS transistor. The drain of the fourth MOS transistor is connected to the interface power supply circuit. KL_30 FILT is respectively connected to the source of the fourth MOS transistor, the cathode of the second Zener diode Z2, the sixteenth resistor R6, and the seventeenth resistor R66.
所述接口供电电路包括第四二极管D10、第十九电阻R70、第二十电阻R72、第五MOS管Q7、第十五电容C56、第二十一电阻R71。所述第一三极管Q5的集电极连接所述第四二极管D10的阴极，所述第四二极管D10的阳极经所述第十九电阻R70连接所述第五MOS管Q7的栅极，所述第五MOS管Q7的源极经所述第二十电阻R72连接所述第五MOS管Q7的栅极，所述第五MOS管Q7的源极连接所述降压供电电路。所述第五MOS管Q7的漏极连接5V_SWITCH, 5V_SWITCH还分别经所述第十五电容C56和所述第二十一电阻R71接地。The interface power supply circuit includes a fourth diode D10, a nineteenth resistor R70, a twentieth resistor R72, a fifth MOS transistor Q7, a fifteenth capacitor C56, and a twenty-first resistor R71. The collector of the first triode Q5 is connected to the cathode of the fourth diode D10, and the anode of the fourth diode D10 is connected to the fifth MOS transistor Q7 via the nineteenth resistor R70. gate, the source of the fifth MOS transistor Q7 is connected to the gate of the fifth MOS transistor Q7 via the twentieth resistor R72, and the source of the fifth MOS transistor Q7 is connected to the step-down power supply circuit . The drain of the fifth MOS transistor Q7 is connected to 5V_SWITCH, and 5V_SWITCH is grounded through the fifteenth capacitor C56 and the twenty-first resistor R71 respectively.
所述降压供电电路包括降压芯片IC2、第十六电容C60、第十七电容C61、第二十二电阻R73。KL30_SWITCH经单向稳压管D11连接所述降压芯片IC2的输入端IN，所述降压芯片IC2的延迟端DELAY经所述第十六电容C60接地，降压芯片IC2的输出端输出5V_CORE。降压芯片的RO端经所述第十七电容C61接地。所述降压芯片的RO端与所述输出端之间连接所述第二十二电阻R73。The step-down power supply circuit includes a step-down chip IC2, a sixteenth capacitor C60, a seventeenth capacitor C61, and a twenty-second resistor R73. KL30_SWITCH is connected to the input terminal IN of the step-down chip IC2 through the one-way regulator D11, the delay terminal DELAY of the step-down chip IC2 is grounded through the sixteenth capacitor C60, and the output terminal of the step-down chip IC2 outputs 5V_CORE. The RO terminal of the step-down chip is grounded through the seventeenth capacitor C61. The twenty-second resistor R73 is connected between the RO end of the step-down chip and the output end.
当输入的KL30_switch进入所述第三二极管D8稳压后，给提供给第一三极管Q5作为开关输入控制且当有效时，输出低电平，此时第四二极管D10也为低电平，第三MOS管Q6的栅极也为低电平，导致第十八电阻R67输入为高，且第三MOS管Q6的源极为高，且当KL30_switch高有效时，降压芯片IC2输入为高电平，使得降压芯片IC2输出有效并形成5V_core电源，该电源作为输入给所述第五MOS管Q7，此时且当且当KL30_switch高有效时，第一三极管Q5基极为高有效，使得Q5集电极为低，而此时5V_core有效，使得第四二极管D10导通，使第五MOS管Q7的栅极为高，第五MOS管Q7导通后，输出电源5V_switch。 其中5V_core给主控及can通讯等供电。5V_switch输出给I/0等端口供电。5V_core和5V_switch电源均分别通过采集反馈电路给主控单元形成闭环控制（参照附图5）。When the input KL30_switch enters the voltage regulation of the third diode D8, it is provided to the first transistor Q5 as a switch input control and when it is valid, it outputs a low level. At this time, the fourth diode D10 is also Low level, the gate of the third MOS transistor Q6 is also low level, causing the input of the eighteenth resistor R67 to be high, and the source of the third MOS transistor Q6 is extremely high, and when KL30_switch is high and effective, the step-down chip IC2 The input is at a high level, so that the output of the step-down chip IC2 is valid and forms a 5V_core power supply, which is used as an input to the fifth MOS transistor Q7. At this time and when KL30_switch is high and effective, the base of the first triode Q5 is Active high makes the collector of Q5 low, and 5V_core is active at this time, making the fourth diode D10 turn on, making the gate of the fifth MOS transistor Q7 high, and after the fifth MOS transistor Q7 is turned on, the output power supply 5V_switch. Among them, 5V_core supplies power to the main control and can communication. The 5V_switch output supplies power to ports such as I/0. Both the 5V_core and 5V_switch power supplies form a closed-loop control to the main control unit through the acquisition feedback circuit (refer to Figure 5).
如图4，所述输出电源单元包括第二稳压电路、负载动态调节电路、反激式电路。所述上拉信号KL30_PULLLUP经所述第二稳压电路分别连接所述负载动态调节电路和所述反激式电路，所述反激式电路输出电源给PTC驱动电源。As shown in Fig. 4, the output power supply unit includes a second voltage stabilization circuit, a load dynamic adjustment circuit, and a flyback circuit. The pull-up signal KL30_PULLLUP is respectively connected to the load dynamic adjustment circuit and the flyback circuit through the second voltage stabilizing circuit, and the flyback circuit outputs power to the PTC driving power supply.
所述第二稳压电路包括第二电感L2003、第十八电容C2046。KL30_PULLLUP经所述第二电感L2003分别连接所述第五电阻R2017、第十一电阻R2025、第十八电容C2046,所述第十八电容C2046接地。The second voltage stabilizing circuit includes a second inductor L2003 and an eighteenth capacitor C2046. KL30_PULLLUP is respectively connected to the fifth resistor R2017, the eleventh resistor R2025, and the eighteenth capacitor C2046 via the second inductor L2003, and the eighteenth capacitor C2046 is grounded.
所述负载动态调节电路包括PWM芯片U2003、第五电阻R2017、第六电阻R2018、第七电阻R2019、第八电阻R2020、第九电阻R2025、第十电阻R2021、第十一电阻R2026、第十二电阻R2027、第十三电阻R2029、第十四电阻R2030、第八电容C2038、第九电容C2070、第十电容C2039、第十一电容C2040、第十二电容C2042、第十三电容C2044、第二MOS管Q2004、第二二极管D2007。所述PWM芯片U2003的运行端RUN分别经所述第五电阻R2017连接所述第二稳压电路，经所述第六电阻R2018接地。所述PWM芯片U2003的阈值电流端ITH依次经所述第七电阻R2019、第八电容C2038接地。所述PWM芯片U2003的反馈FB分别经所述第八电阻R2020接地，经所述第十电阻R2021连接所述第二二极管D2007的阴极，所述第二二极管D2007的阳极连接所述反激式电路。所述PWM芯片U2003的频率端FREQ经所述第九电阻R2025接地。所述PWM芯片U2003的模式端/同步端MODE/SYNC经所述第十电容C2039接地。所述PWM芯片U2003的输入电源端INTVCC也经所述第十电容C2039接地。所述PWM芯片U2003的感应端SENSE分别连接所述第十二电容C2042和所述第十二电阻R2027。所述电压输入端VIN分别经所述第十一电容C2040接地，经所述第十一电阻R2026与所述第二稳压电路连接。所述PWM芯片U2003的门极端GATE连接所述第二MOS管Q2004的栅极，所述第二MOS管Q2004的源极依次连接所述第十四电阻R2030、所述第十三电容C2044接地，所述第二MOS管Q2004的源极还连接所述反激式电路。所述第二MOS管Q2004的漏极分别连接所述第十二电阻R2027和所述第十三电阻R2029。所述第十二电容C2042和所述第十三电阻R2029分别接地。The load dynamic adjustment circuit includes PWM chip U2003, fifth resistor R2017, sixth resistor R2018, seventh resistor R2019, eighth resistor R2020, ninth resistor R2025, tenth resistor R2021, eleventh resistor R2026, twelfth resistor Resistor R2027, thirteenth resistor R2029, fourteenth resistor R2030, eighth capacitor C2038, ninth capacitor C2070, tenth capacitor C2039, eleventh capacitor C2040, twelfth capacitor C2042, thirteenth capacitor C2044, second MOS transistor Q2004, second diode D2007. The running terminal RUN of the PWM chip U2003 is respectively connected to the second voltage stabilizing circuit through the fifth resistor R2017, and grounded through the sixth resistor R2018. The threshold current terminal ITH of the PWM chip U2003 is grounded through the seventh resistor R2019 and the eighth capacitor C2038 in sequence. The feedback FB of the PWM chip U2003 is respectively grounded through the eighth resistor R2020, connected to the cathode of the second diode D2007 through the tenth resistor R2021, and the anode of the second diode D2007 is connected to the flyback circuit. The frequency terminal FREQ of the PWM chip U2003 is grounded through the ninth resistor R2025. The mode terminal/synchronization terminal MODE/SYNC of the PWM chip U2003 is grounded through the tenth capacitor C2039. The input power terminal INTVCC of the PWM chip U2003 is also grounded through the tenth capacitor C2039. The sensing terminal SENSE of the PWM chip U2003 is connected to the twelfth capacitor C2042 and the twelfth resistor R2027 respectively. The voltage input terminals VIN are respectively grounded through the eleventh capacitor C2040, and connected to the second voltage stabilizing circuit through the eleventh resistor R2026. The gate terminal GATE of the PWM chip U2003 is connected to the gate of the second MOS transistor Q2004, the source of the second MOS transistor Q2004 is sequentially connected to the fourteenth resistor R2030, and the thirteenth capacitor C2044 is grounded, The source of the second MOS transistor Q2004 is also connected to the flyback circuit. The drain of the second MOS transistor Q2004 is connected to the twelfth resistor R2027 and the thirteenth resistor R2029 respectively. The twelfth capacitor C2042 and the thirteenth resistor R2029 are respectively grounded.
所述反激式电路包括反激式变压转换器及其外围电路U2001。所述第二MOS管Q2004的源极连接反激式电路。在所述负载动态调节电路和所述反激式电路之间还连接由过滤电路。在所述反激式电路输出H_U1和H_U2z之间也设置有过滤电路。PWM芯片U2003输出产生PWM信号，通过外围电路形成电流环和电压环，电流环路用于采集开关第二MOS管输出负载电流作为反馈调节输入，第十二电阻R2027和与第八电阻R2020，第九电阻R2025及第七电阻R2019等形成电压调节环路，使得负载输出满足外部反激式变压转换器动态调节负载输出。通过第二电感L2003吸收后稳定电压通过U2001环路并在其内变压器初级线圈形成输入与、第二MOS管Q2004组成flyback电路并形成三路输出，一路输出并经第二二极管D2007整流后反馈输入给PWM芯片U2003作为输入电压环系统输入，当输入变化时，该输出变化输出相应负载反馈。另一路输出从变压器次级输出经整流滤波后形成H_U1，H_U1输出给PTC驱动电源供电，最后一路输出也经整流滤波后形成H_U2，H_U2驱动供电后又处理后分成一路通过LDO形成buck电路得到5v VCC_ISOLATE隔离电路给驱动逻辑等单路供电，此电路与其它信号隔离。The flyback circuit includes a flyback transformer converter and its peripheral circuit U2001. The source of the second MOS transistor Q2004 is connected to a flyback circuit. A filter circuit is also connected between the load dynamic adjustment circuit and the flyback circuit. A filter circuit is also provided between the flyback circuit outputs H_U1 and H_U2z. The output of PWM chip U2003 generates a PWM signal, which forms a current loop and a voltage loop through the peripheral circuit. The current loop is used to collect the output load current of the second MOS tube of the switch as the feedback adjustment input. The nine resistors R2025 and the seventh resistor R2019 form a voltage regulation loop, so that the load output can meet the requirements of the external flyback transformer converter to dynamically adjust the load output. Absorbed by the second inductance L2003, the stable voltage passes through the U2001 loop, and the primary coil of the transformer forms an input and the second MOS transistor Q2004 to form a flyback circuit and form three outputs. One output is rectified by the second diode D2007 Feedback is input to PWM chip U2003 as the input voltage loop system input, when the input changes, the output changes and outputs corresponding load feedback. The other output is rectified and filtered from the secondary output of the transformer to form H_U1. The output of H_U1 supplies power to the PTC drive power supply. The last output is also rectified and filtered to form H_U2. The VCC_ISOLATE isolation circuit supplies power to a single circuit such as the drive logic, and this circuit is isolated from other signals.
当KL30小电池输入正常9-16v电压时，电气盒处理后输出形成KL15，一路预留，另一路经过相关电平电路处理后给出使能给主开关电路，此时MCU芯片使能未有输入，且当电动汽车控制器VCU发出enable信号时，KL15电压有效，因此整车点火后的PTC电源系统处于低功耗模式，负载等输出不能被激活，且当ready后电动汽车控制器发出enable给主控单元后，MCU发出使能激活主开关电路，使得KL30 switch 和KL30 PULLUP正常工作。当整车工作后，此时ready信号早已被激活，此时若KL15信号断开，MCU发出使能维持信号保证开关控制电路正常工作。当电动汽车控制器未发出使能信号，主控单元未发出使能激活功能，主控单元管理电源进入睡眠模式，直到使能信号被激活。另，且当电动汽车控制器发出can消息激活主控单元，PTC电源管理系统也被激活。When the KL30 small battery inputs a normal 9-16v voltage, the output of the electrical box is processed to form a KL15, one way is reserved, and the other way is given to the main switch circuit after being processed by the relevant level circuit. At this time, the MCU chip is not enabled. Input, and when the electric vehicle controller VCU sends an enable signal, the KL15 voltage is valid, so the PTC power supply system is in a low power consumption mode after the vehicle is ignited, and the load and other outputs cannot be activated, and the electric vehicle controller sends an enable signal when it is ready After sending it to the main control unit, the MCU sends an enable to activate the main switch circuit, making the KL30 switch and KL30 PULLUP work normally. When the whole vehicle is working, the ready signal has already been activated at this time, and if the KL15 signal is disconnected at this time, the MCU sends an enable maintenance signal to ensure the normal operation of the switch control circuit. When the electric vehicle controller does not send the enable signal, the main control unit does not send the enable activation function, and the main control unit manages the power supply to enter the sleep mode until the enable signal is activated. In addition, when the electric vehicle controller sends a can message to activate the main control unit, the PTC power management system is also activated.
当小电池KL30输入电源出现异常时，可能偏高或偏低，采集回路将此信号反馈给MCU，MCU根据具体负载情况做相应的策略处理，并上报can总线。当H_U1的负载出现异常时导致H_U1出现电压波动或异常，电源芯片通过电流采集反馈到电流环调节PWM占空比保证变压器负载或满载特性输出曲线不出现尖峰，使得输出电源电压平稳不出现波动。When the input power of the small battery KL30 is abnormal, it may be high or low, and the acquisition circuit will feed this signal back to the MCU, and the MCU will make corresponding strategies according to the specific load conditions and report to the CAN bus. When the load of H_U1 is abnormal, the voltage fluctuation or abnormality of H_U1 occurs. The power supply chip feeds back to the current loop to adjust the PWM duty cycle through current collection to ensure that the output curve of the transformer load or full load characteristic does not have a peak, so that the output power supply voltage is stable and does not fluctuate.
本发明通过电子开关电源管理，通过不同的电源拓扑结构和电路实现不同电压等级电源输出满足负载动态响应需求和不同工作模式切换，同时进行一系列系统处理，实现电子控制开关电源管理。The present invention realizes power supply output of different voltage levels through electronic switching power supply management and different power supply topologies and circuits to meet load dynamic response requirements and switch between different working modes, and simultaneously performs a series of system processing to realize electronically controlled switching power supply management.
具体通过外部小电池9-16v输入，经过输入电源电路处理分成两路，一路作为5v系统供电，一路经过flyback电路处理作为H_U电源输入和隔离5v电源输入及环路PWM驱动并采集电流反馈。另一路作为KL15输入并经信号处理采集用于电源上下电模式管理。5v电源管理又分成数字和模拟5v分别给主控、can和信号处理电路使用。对输出电压等必要信号进行反馈采集诊断，通过算法策略实时动态可控制自动调节和响应，达到自动控制管理系统。Specifically, through the external small battery 9-16v input, after the input power circuit processing, it is divided into two circuits, one is used as 5v system power supply, and the other is processed by flyback circuit as H_U power input and isolated 5v power input and loop PWM drive and collects current feedback. The other one is used as the input of KL15 and collected by signal processing for the management of power on and off mode. The 5v power management is divided into digital and analog 5v for the main control, can and signal processing circuits respectively. Feedback acquisition and diagnosis of necessary signals such as output voltage, and real-time dynamic control of automatic adjustment and response through algorithm strategies to achieve an automatic control management system.
本领域的技术人员应理解，上述描述及附图中所示的本发明的实施例只作为举例而并不限制本发明。本发明的目的已经完整有效地实现。本发明的功能及结构原理已在实施例中展示和说明，在没有背离所述原理下，本发明的实施方式可以有任何变形或修改。It should be understood by those skilled in the art that the embodiments of the present invention shown in the foregoing description and drawings are only examples and do not limit the present invention. The objects of the present invention have been fully and effectively accomplished. The functions and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may have any deformation or modification without departing from the principles.
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