WO2024217558A1 - Cp信号与cc信号检测系统及新能源汽车插座 - Google Patents

Cp信号与cc信号检测系统及新能源汽车插座 Download PDF

Info

Publication number
WO2024217558A1
WO2024217558A1 PCT/CN2024/088904 CN2024088904W WO2024217558A1 WO 2024217558 A1 WO2024217558 A1 WO 2024217558A1 CN 2024088904 W CN2024088904 W CN 2024088904W WO 2024217558 A1 WO2024217558 A1 WO 2024217558A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
switch tube
control
circuit
charging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/088904
Other languages
English (en)
French (fr)
Inventor
王超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changchun Jetty Automotive Parts Co Ltd
Original Assignee
Changchun Jetty Automotive Parts Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changchun Jetty Automotive Parts Co Ltd filed Critical Changchun Jetty Automotive Parts Co Ltd
Publication of WO2024217558A1 publication Critical patent/WO2024217558A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the present disclosure relates to the technical field of automobile charging and discharging, and in particular to a CP signal and CC signal detection system and a new energy automobile socket.
  • the connection between the new energy vehicle and the charging pile needs to be confirmed, and the new energy vehicle needs to input the charging pilot voltage to the charging pile.
  • the charging pile recognizes the charging pilot voltage
  • the charging pile inputs electric energy to the new energy vehicle.
  • the connection between the new energy vehicle and external power-consuming equipment needs to be confirmed, and the new energy vehicle needs to provide the discharge pilot voltage to the external power-consuming equipment.
  • the external power-consuming equipment recognizes the discharge pilot voltage, the new energy vehicle discharges to the external power-consuming equipment.
  • the purpose of the present disclosure is to provide a CP signal and CC signal detection system and a new energy vehicle socket to solve the problem that the prior art cannot quickly, accurately and completely identify the CC signal and CP signal of the charging and discharging process.
  • the present disclosure provides a CP signal and CC signal detection system, comprising:
  • CC signal acquisition circuit used for acquiring CC signals on the vehicle end interface
  • a control chip wherein the signal output terminal of the CC signal acquisition circuit is connected to the signal input terminal of the control chip;
  • a CP signal generating circuit wherein a signal input terminal of the CP signal generating circuit is connected to a signal output terminal of the control chip;
  • a CP signal control circuit wherein a signal input end of the CP signal control circuit is respectively connected to a signal output end of the CP signal generating circuit, a signal output end of the control chip, and an external CP signal output end;
  • control chip is configured to: when it is detected that the CC signal is a charging CC signal, control the CP signal generation circuit to stop outputting the CP signal, and control the external signal output terminal to provide the CP signal, and control the CP signal control circuit to output a charging CP signal according to the CP signal;
  • the configuration is as follows: when it is detected that the CC signal is a discharge CC signal, the CP signal generation circuit is controlled to generate a CP signal, and the CP signal control circuit is controlled to output a discharge CP signal according to the CP signal.
  • control chip is also configured to control the CP signal control circuit to feed back the charging CP signal or the discharging CP signal to the vehicle end via the signal connection terminal of the charging gun or the discharging gun.
  • the CC signal acquisition circuit includes a detection port, which is connected to the vehicle-end interface.
  • the control chip is configured to determine whether the charging gun or the discharging gun is fully connected based on the RC resistance between the detection port and the PE point, and confirm the rated capacity of the currently connected charging gun or the discharging gun based on the RC resistance.
  • the CC signal acquisition circuit further includes a constant current source circuit and a filter circuit, wherein the constant current source circuit is used to provide a constant current source signal, and the constant current source signal is transmitted to the detection port through the filter circuit.
  • the CP signal generating circuit includes a voltage comparator U1A, a first transistor Q1, and a second transistor Q2 that is complementary to the first transistor, the positive input end of the voltage comparator U1A is connected to the first signal output end of the control chip, the reverse input end of the voltage comparator U1A is connected to the reference voltage VREF1, the output end of the voltage comparator U1A is connected to the base of the first transistor Q1 and the second transistor Q2, the emitter of the first transistor Q1 is connected to the emitter of the second transistor Q2, and the connection point between the emitters of the first transistor Q1 and the second transistor Q2 is connected to the signal input end of the CP signal control circuit.
  • a first diode Ds and a first filter capacitor Cs arranged in parallel are also connected between the connection point between the emitters of the first transistor Q1 and the second transistor Q2 and the signal input end of the CP signal control circuit, and the other ends of the first diode Ds and the first filter capacitor Cs arranged in parallel are grounded.
  • the CP signal control circuit includes a first switch tube Q3, a second switch tube Q4, a third switch tube Q5, a fourth switch tube Q6 and a fifth switch tube Q7.
  • the source of the first switch tube Q3 is connected to the signal output end of the CP signal generating circuit, the drain of the first switch tube Q3 and the source of the third switch tube Q5 are both connected to the external CP signal output end, and the first switch
  • the gate of the transistor Q3 is connected to the drain of the second switch transistor Q4, the gate of the third switch transistor Q5 is connected to the drain of the fourth switch transistor Q6, and the drain of the third switch transistor Q5 is connected to the signal output end of the CP signal control circuit;
  • the gate of the second switch tube Q4 is connected to the second signal output terminal of the control chip, the source of the second switch tube Q4 is grounded, the gate of the fourth switch tube Q6 is connected to the third signal output terminal of the control chip, and the source of the fourth switch tube Q6 is grounded;
  • the gate of the fifth switch tube Q7 is connected to the fourth signal output terminal of the control chip, the source of the fifth switch tube Q7 is grounded, and the drain of the fifth switch tube Q7 is connected to the signal output terminal of the CP signal control circuit.
  • an RC filter circuit is further provided between the gate and the source of the fifth switch tube Q7.
  • the present disclosure provides a new energy vehicle socket.
  • the new energy vehicle is configured to control the charging gun to charge the socket according to the charging CP signal, and is configured to control the socket to charge the external electrical device according to the discharging CP signal.
  • the CC signal and CP signal of the charging and discharging process can be identified quickly, accurately and completely.
  • FIG1 shows a structural block diagram of a CP signal and CC signal detection system according to an embodiment of the present disclosure
  • FIG2 shows a circuit schematic diagram of the CP signal generating circuit in FIG1 ;
  • FIG3 shows a circuit schematic diagram of the CP signal control circuit in FIG1 ;
  • FIG. 4 shows a circuit schematic diagram of the CC signal acquisition circuit in FIG. 1 .
  • the present disclosure provides a structural block diagram of a CP signal and CC signal detection system as shown in FIG1 , which specifically includes:
  • CC signal acquisition circuit used for acquiring CC signals on the vehicle end interface
  • the control chip, the signal output terminal of the CC signal acquisition circuit is connected to the signal input terminal of the control chip;
  • a CP signal generating circuit wherein a signal input terminal of the CP signal generating circuit is connected to a signal output terminal of the control chip;
  • a CP signal control circuit wherein a signal input terminal of the CP signal control circuit is respectively connected to a signal output terminal of the CP signal generating circuit, a signal output terminal of the control chip, and an external CP signal output terminal;
  • control chip is configured to: when it is detected that the CC signal is a charging CC signal, control the CP signal generation circuit to stop outputting the CP signal, and control the external CP signal output terminal to provide the CP signal, and control the CP signal control circuit to output the charging CP signal according to the CP signal;
  • the control chip is configured to: when it is detected that the CC signal is a discharge CC signal, control the CP signal generation circuit to generate a CP signal, and control the CP signal control circuit to output a discharge CP signal according to the CP signal.
  • the CP signal is the control pilot function signal; the CC signal is the connection confirmation signal.
  • the type of gun connected to the new energy vehicle can be quickly and accurately determined through the CC signal acquisition circuit, that is, the judgment of whether it is a charging gun or a discharging gun can be completed, and the maximum allowable current of charging and discharging can be distinguished; and the control chip can decide how to provide the corresponding CP signal according to the type of gun.
  • the design that can convert the PMW (Pulse width modulation) waveform into AD (Analog Digital) value ensures accurate judgment of the CP signal.
  • control chip is further configured to control the CP signal control circuit to feed back the charging CP signal or the discharging CP signal to the vehicle end via the signal connection terminal of the charging gun or the discharging gun.
  • the vehicle end can promptly know that the car has successfully shaken hands with a charging device such as a charging pile, or an external power-consuming device, and further control the charging and discharging process based on the feedback of the information.
  • FIG4 it is a circuit schematic diagram of the CC signal acquisition circuit in FIG1.
  • the CC signal acquisition circuit includes a detection port CC_SENSE, the detection port CC_SENSE is connected to the vehicle end interface, and the control chip is configured to detect the RC resistance between the detection port and the PE (protecting earthing) point (which can be 4) to determine whether the charging gun or the discharging gun is fully connected, and at the same time determine the rated capacity (rated current) of the currently connected charging gun or the discharging gun according to the RC resistance.
  • the PE protecting earthing
  • the charging gun and the discharging gun correspond to different RC resistances
  • a standard charging RC resistance corresponding to the charging gun is preset (for example, it can be multiple preset resistances, or it can be a numerical range, and the present disclosure does not limit this data and the method for determining the data)
  • a standard discharge RC resistance corresponding to the discharge gun is preset (for example, it can be multiple preset resistances, or it can be a numerical range, and the present disclosure does not limit this data and the method for determining the data)
  • the CC signal acquisition circuit can quickly and accurately determine the type of gun connected to the new energy vehicle, that is, complete the judgment of whether it is a charging gun or a discharging gun, and at the same time distinguish the maximum allowable current of charging and discharging.
  • the CC signal acquisition circuit further includes a constant current source circuit and a filter circuit.
  • the constant current source circuit is used to provide a constant current source signal, and the constant current source signal is transmitted to the detection port through the filter circuit.
  • the constant current source circuit includes: a second diode D2, a sixth switch tube Q8, a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-eighth resistor R28, and a thirty-first resistor R31.
  • the anode of the second diode D2 is connected to one end of the thirty-first resistor R31, the other end of the thirty-first resistor R31 is grounded, and the cathode of the second diode D2 is connected to the positive electrode of the power supply; the connection point between the second diode D2 and the thirty-first resistor R31 is connected to the gate of the sixth switch tube Q8, and the drain of the sixth switch tube Q8 is connected to the input end of the filter circuit; the twenty-sixth resistor R26 and the twenty-seventh resistor R27 are connected in parallel, one end of which is connected to the positive electrode of the power supply, and the other end is connected to the source of the sixth switch tube Q8, and the other ends of the two resistors R26 and R27 are also connected by wires; in addition, the twenty-eighth resistor R28 is also connected between the source and the drain of the sixth switch tube Q8.
  • the CC signal acquisition circuit further includes a third diode D3, thereby playing a role in preventing reverse connection.
  • the filter circuit in FIG4 includes a seventh capacitor C7 and a fourth diode D4, thereby playing a role in filtering and stabilizing voltage.
  • the CC signal acquisition circuit further includes a twenty-ninth resistor R29 and a thirtieth resistor R30 that play a role in current limiting.
  • the CC signal acquisition circuit adopts a constant current source design to provide a signal.
  • the total resistance characteristics of the RC resistor and the twenty-fifth resistor R25 are the same.
  • the voltage value sampled by the detection port CC_SENSE should be the same for both the charging gun and the discharge gun. If the sampled value does not match the set value, it can be determined that the connection is not good for both the charging gun and the discharge gun. Therefore, It is possible to uniformly judge whether the charging gun or the discharging gun is connected properly, without the need to design two independent circuits for separate judgment.
  • the first switch S1 When confirming the charging current, the first switch S1 is in a closed state, and the RC resistor is used to collect the characteristics of different charging current and discharging current characteristic values when different charging and discharging guns are connected, and then the detection port CC_SENSE is sampled. If the sampled value is the same as the preset value, the maximum charging current value or the maximum discharging current value can be determined. If the sampled value is different from the preset value, it means that the connected charging gun or discharging gun does not meet the requirements, and charging and discharging are not allowed.
  • the CP signal generating circuit includes a voltage comparator U1A, a first transistor Q1, and a second transistor Q2 that is complementary to the first transistor Q1, the positive input end of the voltage comparator U1A is connected to the first signal output end PWM_OUT of the control chip, the reverse input end of the voltage comparator U1A is connected to the reference voltage VREF1, the output end of the voltage comparator U1A is connected to the base of the first transistor Q1 and the second transistor Q2, the emitter of the first transistor Q1 is connected to the emitter of the second transistor Q2, and the connection point between the emitters of the first transistor Q1 and the second transistor Q2 is connected to the signal input end of the CP signal control circuit.
  • the CP signal generating circuit is controlled to generate a CP signal (the CP signal can be understood as the "CP-G" shown in Figure 2) only when the control chip identifies that the device connected to the vehicle-end interface is a discharge gun (the discharge gun itself has no CP signal); and when the control chip identifies that the device connected to the vehicle-end interface is a charging gun, the CP signal generating circuit is controlled to stop outputting the CP signal, and the charging gun provides the CP signal at this time.
  • a first diode Ds and a first filter capacitor Cs are also connected in parallel between the connection point between the emitter of the first transistor Q1 and the second transistor Q2 and the signal input end of the CP signal control circuit, and the other ends of the first diode Ds and the first filter capacitor Cs in parallel are grounded.
  • the first diode Ds can play an electrostatic protection role
  • the first filter capacitor Cs can play a filtering role.
  • the CP signal generating circuit also includes a plurality of resistors connected between the components in the circuit for current limiting, such as the seventh resistor R7, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11 and the twelfth resistor R12 as shown in FIG2 .
  • the first transistor Q1 can be, for example, an NPN transistor
  • Q2 can be, for example, a PNP transistor.
  • the CP signal generation circuit uses the transistor architecture of the upper N-type transistor and the lower P-type transistor powered by the ⁇ 12V power supply, and uses the comparator characteristics of the voltage comparator U1A, that is, to compare the PWM_OUT signal with the VREF1 voltage-divided signal, and outputs a PWM waveform of the CP signal that meets the requirements.
  • the PWM waveform can be converted into an AD value by a single-chip microcomputer, and then the PWM waveform is judged based on the AD value to ensure accurate judgment of the CP signal.
  • the CP signal control circuit includes a first switch tube Q3 , a second switch tube Q4 , a third switch tube Q5 , a fourth switch tube Q6 and a fifth switch tube Q7 .
  • the source of the first switch tube Q3 is connected to the signal output end of the CP signal generating circuit (receiving "CP-G"), the drain of the first switch tube Q3 and the source of the third switch tube Q5 are both connected to the external CP signal output end ("CP-G” shown in FIG. 3), the gate of the first switch tube Q3 is connected to the drain of the second switch tube Q4, the gate of the third switch tube Q5 is connected to the drain of the fourth switch tube Q6, and the drain of the third switch tube Q5 is connected to the signal output end of the CP signal control circuit ("CP_SENSE" shown in FIG. 3);
  • the gate of the second switch tube Q4 is connected to the second signal output terminal (“Control1” in FIG. 3 ) of the control chip, the source of the second switch tube Q4 is grounded, the gate of the fourth switch tube Q6 is connected to the third signal output terminal (“Control2” in FIG. 3 ) of the control chip, and the source of the fourth switch tube Q6 is grounded;
  • the gate of the fifth switch tube Q7 is connected to the fourth signal output terminal of the control chip ("Control3" in Figure 3), the source of the fifth switch tube Q7 is grounded, and the drain of the fifth switch tube Q7 is connected to the signal output terminal of the CP signal control circuit ("CP_SENSE" shown in Figure 3).
  • the first switch tube Q3, the second switch tube Q4, the third switch tube Q5, and the fourth switch tube Q6, the source and gate of these four field effect tubes are respectively connected with a thirteenth resistor R13, a fifteenth resistor R15, a sixteenth resistor R16, and an eighteenth resistor R18.
  • the second signal output terminal Control1 and the third signal output terminal Control2 of the control chip are also respectively connected with current limiting resistors: including a fourteenth resistor R14 and a seventeenth resistor R17.
  • an RC filter circuit is further provided between the gate and the source of the fifth switch tube Q7.
  • the RC filter circuit includes a sixth capacitor C6 and a twenty-third resistor R23.
  • the CP signal control circuit also includes voltage-dividing and current-limiting resistors for making the signal output more stable and accurate, such as the nineteenth resistor R19, the twentieth resistor R20, the twenty-first resistor R21, the twenty-second resistor R22 and the twenty-fourth resistor R24 shown in FIG3 .
  • the control chip controls the CP signal generation circuit to stop outputting the CP signal, that is, stop outputting the PWM_OUT signal, and at the same time, the Control1 signal is pulled low, and the Control2 signal is set high, to ensure that the first switch tube Q3 and the second switch tube Q4 are turned off, and the third switch tube Q5 and the fourth switch tube Q6 are turned on, and the Control3 signal is set high according to the specified timing, and the CP_SENSE signal can be obtained, which is the CP_SENSE signal of the charging gun, that is, the charging CP signal.
  • the control chip detects that the discharge gun is inserted, since the discharge gun itself has no CP signal and needs to be provided externally, the PWM_OUT signal is controlled to be output at this time, and the Control1 signal is set high, and the Control signal is set high, to ensure that the first switch tube Q3, the second switch tube Q4, the third switch tube Q5, and the fourth switch tube Q6 are turned on, and the Control3 signal is set high according to the specified timing, and the CP_SENSE signal can be obtained, which is the CP_SENSE signal of the discharge gun, that is, the discharge CP signal.
  • the type of gun connected to the new energy vehicle can be quickly and accurately determined through the CC signal acquisition circuit, that is, the judgment of whether it is a charging gun or a discharging gun can be completed, and at the same time, The maximum allowable current for charging and discharging is determined; and the control chip can decide how to provide the corresponding CP signal according to the type of gun.
  • the disclosed embodiment also provides a new energy vehicle socket, connected to a discharge gun or a charging gun; and a CP signal and CC signal detection system of any of the above embodiments is arranged, the CP signal and CC signal detection system is used to detect the charging CP signal or the discharging CP signal, and feed back the charging CP signal or the discharging CP signal to the new energy vehicle, the new energy vehicle is configured to control the charging gun to charge the socket according to the charging CP signal, and is configured to control the socket to charge an external electrical device according to the discharging CP signal.

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

本公开提供了一种CP信号与CC信号检测系统及新能源汽车插座，该检测系统包括CC信号采集电路、控制芯片、CP信号生成电路和CP信号控制电路，控制芯片配置为：在检测到CC信号为充电CC信号的情况下，控制CP信号生成电路停止输出CP信号，同时控制外部信号输出端提供CP信号，并控制CP信号控制电路根据该CP信号输出充电CP信号；以及配置为：在检测到CC信号为放电CC信号的情况下，控制CP信号生成电路生成CP信号，并控制CP信号控制电路根据该CP信号输出放电CP信号。由此，实现了迅速而准确的判断出枪的类型，同时分辨出充放电的最大允许电流；且能够将PMW波形转化为AD值的设计，保证对CP信号的准确判断。

Description

CP信号与CC信号检测系统及新能源汽车插座
相关申请
本申请要求于2023年04月19日递交的申请号为202320877179.3的中国实用新型专利申请的优先权，并引用上述专利申请公开的全部内容作为本申请的一部分。
技术领域
本公开涉及汽车充放电技术领域，尤其涉及一种CP信号与CC信号检测系统及新能源汽车插座。
背景技术
在新能源汽车进行充电时，需要新能源汽车与充电桩之间的连接确认，且需要新能源汽车向充电桩输入充电导引电压，当充电桩识别充电导引电压后，充电桩向新能源汽车输入电能。在新能源汽车进行对外放电时，需要新能源汽车与外部用电设备之间的连接确认，且需要新能源汽车向外部用电设备提供放电导引电压，当外部用电设备识别放电导引电压后，新能源汽车向外部用电设备放电。
因此，在这种还需要新能源汽车进行充放电的情况下，则要求新能源汽车能够快速、准确且完整地识别充放电过程的CC(connection confirm)信号和CP(control pilot)信号。但目前市面上的产品，对充电枪与放电枪基本上采取不同的控制策略，适用性不强且成本高。
发明内容
针对现有技术的上述问题，本公开的目的在于，提供一种CP信号与CC信号检测系统及新能源汽车插座，以解决现有技术中无法快速、准确且完整地识别充放电过程的CC信号和CP信号的问题。
为了解决上述技术问题，本公开的具体技术方案如下：
一方面，本公开提供一种CP信号与CC信号检测系统，包括：
CC信号采集电路，用于采集车辆端接口上的CC信号；
控制芯片，所述CC信号采集电路的信号输出端与所述控制芯片的信号输入端连接；
CP信号生成电路，所述CP信号生成电路的信号输入端与所述控制芯片的信号输出端连接；以及
CP信号控制电路，所述CP信号控制电路的信号输入端分别连接所述CP信号生成电路的信号输出端、所述控制芯片的信号输出端以及外部CP信号输出端；
其中，所述控制芯片配置为：在检测到所述CC信号为充电CC信号的情况下，控制所述CP信号生成电路停止输出CP信号，同时控制所述外部信号输出端提供CP信号，并控制所述CP信号控制电路根据所述CP信号输出充电CP信号；以及
配置为：在检测到所述CC信号为放电CC信号的情况下，控制所述CP信号生成电路生成CP信号，并控制所述CP信号控制电路根据所述CP信号输出放电CP信号。
作为本公开的一种实施例，所述控制芯片还配置为控制所述CP信号控制电路将所述充电CP信号或所述放电CP信号经由充电枪或放电枪的信号连接端子反馈给车辆端。
作为本公开的一种实施例，所述CC信号采集电路包括检测端口，所述检测端口连接所述车辆端接口，所述控制芯片配置为根据所述检测端口与PE点之间的RC阻值来判断充电枪或放电枪是否完全连接，同时根据所述RC阻值确认当前连接的充电枪或放电枪的额定容量。
作为本公开的一种实施例，所述CC信号采集电路还包括恒流源电路和滤波电路，所述恒流源电路用于提供恒流源信号，所述恒流源信号经过所述滤波电路传输至所述检测端口。
作为本公开的一种实施例，所述CP信号生成电路包括电压比较器U1A、第一三极管Q1、与所述第一三极管互补导通的第二三极管Q2，所述电压比较器U1A的正向输入端连接所述控制芯片的第一信号输出端，所述电压比较器U1A的反向输入端连接参考电压VREF1，所述电压比较器U1A的输出端连接所述第一三极管Q1和所述第二三极管Q2的基极，所述第一三极管Q1的发射极连接所述第二三极管Q2的发射极，所述第一三极管Q1和所述第二三极管Q2的所述发射极之间的连接点与所述CP信号控制电路的信号输入端连接。
作为本公开的一种实施例，所述第一三极管Q1和所述第二三极管Q2的所述发射极之间的连接点与所述CP信号控制电路的信号输入端之间还连接有并联设置的第一二极管Ds和第一滤波电容Cs，并联的所述第一二极管Ds和所述第一滤波电容Cs的另一端接地。
作为本公开的一种实施例，所述CP信号控制电路包括第一开关管Q3、第二开关管Q4、第三开关管Q5、第四开关管Q6和第五开关管Q7，
所述第一开关管Q3的源极连接所述CP信号生成电路的信号输出端，所述第一开关管Q3的漏极和所述第三开关管Q5的源极均连接所述外部CP信号输出端，所述第一开关 管Q3的栅极连接所述第二开关管Q4的漏极，所述第三开关管Q5的栅极连接所述第四开关管Q6的漏极，所述第三开关管Q5的漏极连接所述CP信号控制电路的信号输出端；
所述第二开关管Q4的栅极连接所述控制芯片的第二信号输出端，所述第二开关管Q4的源极接地，所述第四开关管Q6的栅极连接所述控制芯片的第三信号输出端，所述第四开关管Q6的源极接地；
所述第五开关管Q7的栅极连接所述控制芯片的第四信号输出端，所述第五开关管Q7的源极接地，所述第五开关管Q7的漏极连接所述CP信号控制电路的信号输出端。
作为本公开的一种实施例，所述第五开关管Q7的栅极和源极之间还设置有RC滤波电路。
另一方面，本公开提供一种新能源汽车插座，
连接放电枪或充电枪；以及
布置上述任一实施例所述的CP信号与CC信号检测系统，所述CP信号与CC信号检测系统用于检测充电CP信号或放电CP信号，并将其反馈给所述新能源汽车，所述新能源汽车配置为根据所述充电CP信号控制所述充电枪给所述插座充电，以及配置为根据所述放电CP信号控制所述插座给外部用电设备充电。
采用上述技术方案，能够快速、准确且完整地识别充放电过程的CC信号和CP信号。
为让本公开的上述和其他目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附图式，作详细说明如下。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述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公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了本公开实施例一种CP信号与CC信号检测系统的结构框图；
图2示出了图1中的CP信号生成电路的电路原理图；
图3示出了图1中的CP信号控制电路的电路原理图；
图4示出了图1中的CC信号采集电路的电路原理图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本公开实施例提供如图1所示一种CP信号与CC信号检测系统的结构框图，具体包括：
CC信号采集电路，用于采集车辆端接口上的CC信号；
控制芯片，CC信号采集电路的信号输出端与控制芯片的信号输入端连接；
CP信号生成电路，CP信号生成电路的信号输入端与控制芯片的信号输出端连接；以及
CP信号控制电路，CP信号控制电路的信号输入端分别连接CP信号生成电路的信号输出端、控制芯片的信号输出端以及外部CP信号输出端；
其中，控制芯片配置为：在检测到CC信号为充电CC信号的情况下，控制CP信号生成电路停止输出CP信号，同时控制外部CP信号输出端提供CP信号，并控制CP信号控制电路根据CP信号输出充电CP信号；以及
该控制芯片配置为：在检测到CC信号为放电CC信号的情况下，控制CP信号生成电路生成CP信号，并控制CP信号控制电路根据CP信号输出放电CP信号。
可以理解，CP信号为控制导引功能(control pilot function)信号；CC信号为连接确认(connection confirm)信号。
根据本技术方案的CP信号与CC信号检测系统，通过CC信号采集电路可以迅速而准确的判断出连接新能源汽车的枪的类型，即完成对充电枪还是放电枪的判断，同时分辨出充放电的最大允许电流；并且控制芯片可以根据枪的类型决定如何提供对应的CP信号。此外，能够将PMW(Pulse width modulation)波形转化为AD(Analog Digital)值的设计，保证对CP信号的准确判断。
作为本公开的一种实施例，控制芯片还配置为控制CP信号控制电路将充电CP信号或放电CP信号经由充电枪或放电枪的信号连接端子反馈给车辆端。由此，车辆端可以及时得知汽车与充电桩等充电设备、或外部用电设备已握手成功，并根据该信息的反馈进一步控制充放电过程。
作为本公开的一种实施例，具体地，如图4所示，为图1中的CC信号采集电路的电路原理图。CC信号采集电路包括检测端口CC_SENSE，检测端口CC_SENSE连接车辆端接口，控制芯片配置为根据检测端口与PE(protecting earthing)点之间的RC阻值(可以 理解为图4中RC电阻的阻值)来判断充电枪或放电枪是否完全连接，同时根据RC阻值确定当前连接的充电枪或放电枪的额定容量(额定电流)。可以理解，针对不同的RC阻值，采用的电缆的粗细不同，电缆能够承受的最大电流也是不同的。进一步，充电枪和放电枪分别与不同的RC阻值相对应，例如，预设与充电枪对应的标准充电RC阻值(例如可以为多个预设阻值，也可以为一个数值范围，本公开对此数据及数据的确定方法不作限定)，以及预设与放电枪对应的标准放电RC阻值(例如可以为多个预设阻值，也可以为一个数值范围，本公开对此数据及数据的确定方法不作限定)，在检测得到的RC阻值为与标准充电RC阻值中的一个阻值或落入标准充电RC阻值的范围时，确定当前与充电枪相连接；在检测得到的RC阻值为与标准放电RC阻值中的一个阻值或落入标准放电RC阻值的范围时，确定当前与放电枪相连接。由此，通过该CC信号采集电路可以迅速而准确的判断出连接新能源汽车的枪的类型，即完成对充电枪还是放电枪的判断，同时分辨出充放电的最大允许电流。
作为本公开的一种实施例，继续参考图4，CC信号采集电路还包括恒流源电路和滤波电路，恒流源电路用于提供恒流源信号，恒流源信号经过滤波电路传输至检测端口。
具体地，如图4所示，恒流源电路包括：第二二极管D2、第六开关管Q8、第二十六电阻R26、第二十七电阻R27、第二十八电阻R28和第三十一电阻R31。第二二极管D2的阳极与第三十一电阻R31的一端连接，第三十一电阻R31的另一端接地，第二二极管D2的阴极连接电源正极；第二二极管D2与第三十一电阻R31之间的连接点与第六开关管Q8的栅极相连，第六开关管Q8的漏极连接滤波电路的输入端；第二十六电阻R26和第二十七电阻R27并联后一端连接电源的正极，另一端连接第六开关管Q8的源极，且两个电阻R26和R27的另一端还通过导线连接；另外，第六开关管Q8的源极与漏极之间还连接第二十八电阻R28。
具体地，如图4所示，CC信号采集电路还包括第三二极管D3，由此起到防反接作用。进一步地，图4中的滤波电路包括第七电容C7和第四二极管D4，由此起到滤波稳压的作用。进一步地，CC信号采集电路还包括起到限流作用的第二十九电阻R29和第三十电阻R30。
由此，CC信号采集电路采用恒流源设计来提供信号。具体地，利用RC电阻和第二十五电阻R25的总电阻特性相同，在充电枪或者放电枪半连接时，恒流源流经总电阻时，无论是充电枪还是放电枪，检测端口CC_SENSE采样的电压值都应该是相同的。若采样值与设定值不符，无论是充电枪还是放电枪，都可以判断出是未连接好的状态。由此， 可以统一判断充电枪或者放电枪是否连接好，不需要设计两个独立的电路分别判断。在进行充电电流确认时，第一开关S1处于闭合状态，利用RC电阻在连接不同的充放电枪的状态下，会采集到不同的充电电流与放电电流特征值的特性，进而进行检测端口CC_SENSE的采样，若采样值与预设值相同，则可确定最大充电电流值或最大放电电流值，若采样值与预设值不同，则说明连接的充电枪或放电枪不符合需求，则不允许充放电。
作为本公开的一种实施例，如图2所示，CP信号生成电路包括电压比较器U1A、第一三极管Q1、与第一三极管Q1互补导通的第二三极管Q2，电压比较器U1A的正向输入端连接控制芯片的第一信号输出端PWM_OUT，电压比较器U1A的反向输入端连接参考电压VREF1，电压比较器U1A的输出端连接第一三极管Q1和第二三极管Q2的基极，第一三极管Q1的发射极连接第二三极管Q2的发射极，第一三极管Q1和第二三极管Q2的发射极之间的连接点与CP信号控制电路的信号输入端连接。
可以理解，是在控制芯片识别出连接车辆端接口的设备是放电枪的情况下(放电枪本身并无CP信号)，才控制CP信号生成电路产生CP信号(CP信号可以理解为图2中所示的“CP-G”)；而在控制芯片识别出连接车辆端接口的设备是充电枪的情况下，则控制CP信号产生电路停止输出CP信号，此时是由充电枪来提供CP信号。
更具体地，如图2所示，第一三极管Q1和第二三极管Q2的发射极之间的连接点与CP信号控制电路的信号输入端之间还连接有并联设置的第一二极管Ds和第一滤波电容Cs，并联的第一二极管Ds和第一滤波电容Cs的另一端接地。第一二极管Ds可以起到静电防护作用，第一滤波电容Cs可以起到滤波作用。另外，CP信号生成电路还包括连接在该电路中各元器件之间用于限流的若干电阻，例如如图2所示的第七电阻R7、第八电阻R8、第九电阻R9、第十电阻R10、第十一电阻R11和第十二电阻R12。在本实施例中，第一三极管Q1例如可以为NPN三极管，Q2例如可以为PNP三极管。
由此，CP信号生成电路利用±12V电源供电的上N型三极管下P型三极管的三极管架构，利用电压比较器U1A的比较器特性，即，对PWM_OUT信号与VREF1分压信号形成对比，输出符合要求的CP信号的PWM波形。进一步，例如可以通过单片机回采的方式实现PWM波形转换为AD值，进而基于AD值判断PWM波形是否准确，从而保证对CP信号的准确判断。
作为本公开的一种实施例，如图3所示，CP信号控制电路包括第一开关管Q3、第二开关管Q4、第三开关管Q5、第四开关管Q6和第五开关管Q7，
第一开关管Q3的源极连接CP信号生成电路的信号输出端(接收“CP-G”)，第一开关管Q3的漏极和第三开关管Q5的源极均连接外部CP信号输出端(图3中所示的“CP-G”)，第一开关管Q3的栅极连接第二开关管Q4的漏极，第三开关管Q5的栅极连接第四开关管Q6的漏极，第三开关管Q5的漏极连接CP信号控制电路的信号输出端(图3中所示的“CP_SENSE”)；
第二开关管Q4的栅极连接控制芯片的第二信号输出端(图3中的“Control1”)，第二开关管Q4的源极接地，第四开关管Q6的栅极连接控制芯片的第三信号输出端(图3中的“Control2”)，第四开关管Q6的源极接地；
第五开关管Q7的栅极连接控制芯片的第四信号输出端(图3中的“Control3”)，第五开关管Q7的源极接地，第五开关管Q7的漏极连接CP信号控制电路的信号输出端(图3中所示的“CP_SENSE”)。
更具体地，如图3所示，第一开关管Q3、第二开关管Q4、第三开关管Q5、第四开关管Q6，这四个场效应管的源极与栅极之间分别连接有第十三电阻R13、第十五电阻R15、第十六电阻R16和第十八电阻R18。控制芯片的第二信号输出端Control1和第三信号输出端Control2还分别连接有限流电阻：包括第十四电阻R14和第十七电阻R17。
更具体地，如图3所示，第五开关管Q7的栅极和源极之间还设置有RC滤波电路。该RC滤波电路包括第六电容C6和第二十三电阻R23。另外，CP信号控制电路还包括用于使信号输出更加稳定准确的分压、限流电阻，例如图3所示的第十九电阻R19、第二十电阻R20、第二十一电阻R21、第二十二电阻R22和第二十四电阻R24。
由此，控制芯片检测到充电枪插入时，因充电枪会产生CP信号，不需额外产生CP信号，所以控制芯片控制CP信号生成电路停止输出CP信号，即，停止PWM_OUT信号输出，同时Control1信号拉低，Control2信号置高，保证第一开关管Q3与第二开关管Q4截止，第三开关管Q5与第四开关管Q6导通，Control3信号根据规定时序置高，即可得到CP_SENSE信号，此时为充电枪的CP_SENSE信号，即，充电CP信号。当控制芯片检测到放电枪插入时，因放电枪本身并无CP信号，需要外部提供，所以此时控制PWM_OUT信号输出，同时Control1信号置高，Control信号置高，保证第一开关管Q3、第二开关管Q4、第三开关管Q5、第四开关管Q6信号导通，此时Control3信号根据规定时序置高，即可得到CP_SENSE信号，此时为放电枪的CP_SENSE信号，即，放电CP信号。
由此，利用本公开的CP信号与CC信号检测系统，通过CC信号采集电路可以迅速而准确的判断出连接新能源汽车的枪的类型，即完成对充电枪还是放电枪的判断，同时确 定出充放电的最大允许电流；并且控制芯片可以根据枪的类型决定如何提供对应的CP信号。
本公开实施例还提供一种新能源汽车插座，连接放电枪或充电枪；以及布置上述任一实施例的CP信号与CC信号检测系统，CP信号与CC信号检测系统用于检测充电CP信号或放电CP信号，并将该充电CP信号或放电CP信号反馈给新能源汽车，新能源汽车配置为根据充电CP信号控制充电枪给插座充电，以及配置为根据放电CP信号控制插座给外部用电设备充电。
本公开中应用了具体实施例对本公开的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本公开的方法及其核心思想；同时，对于本领域的一般技术人员，依据本公开的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本公开的限制。

Claims (9)

  1. 一种CP信号与CC信号检测系统，其特征在于，包括：
    CC信号采集电路，用于采集车辆端接口上的CC信号；
    控制芯片，所述CC信号采集电路的信号输出端与所述控制芯片的信号输入端连接；
    CP信号生成电路，所述CP信号生成电路的信号输入端与所述控制芯片的信号输出端连接；以及
    CP信号控制电路，所述CP信号控制电路的信号输入端分别连接所述CP信号生成电路的信号输出端、所述控制芯片的信号输出端以及外部CP信号输出端；
    其中，所述控制芯片配置为：在检测到所述CC信号为充电CC信号的情况下，控制所述CP信号生成电路停止输出CP信号，同时控制所述外部CP信号输出端提供CP信号，并控制所述CP信号控制电路根据所述CP信号输出充电CP信号；以及
    所述控制芯片还配置为：在检测到所述CC信号为放电CC信号的情况下，控制所述CP信号生成电路生成CP信号，并控制所述CP信号控制电路根据所述CP信号输出放电CP信号。
  2. 根据权利要求1所述的CP信号与CC信号检测系统，其特征在于，所述控制芯片还配置为控制所述CP信号控制电路将所述充电CP信号或所述放电CP信号经由充电枪或放电枪的信号连接端子反馈给车辆端。
  3. 根据权利要求1所述的CP信号与CC信号检测系统，其特征在于，所述CC信号采集电路包括检测端口，所述检测端口连接所述车辆端接口，所述控制芯片配置为根据所述检测端口与PE点之间的RC阻值来判断充电枪或放电枪是否完全连接，同时根据所述RC阻值确认当前连接的充电枪或放电枪的额定容量。
  4. 根据权利要求3所述的CP信号与CC信号检测系统，其特征在于，所述CC信号采集电路还包括恒流源电路和滤波电路，所述恒流源电路用于提供恒流源信号，以及所述恒流源信号经过所述滤波电路传输至所述检测端口。
  5. 根据权利要求1所述的CP信号与CC信号检测系统，其特征在于，所述CP信号生成电路包括电压比较器U1A、第一三极管Q1、与所述第一三极管互补导通的第二三极管Q2，所述电压比较器U1A的正向输入端连接所述控制芯片的第一信号输出端，所述电压 比较器U1A的反向输入端连接参考电压VREF1，所述电压比较器U1A的输出端连接所述第一三极管Q1和所述第二三极管Q2的基极，所述第一三极管Q1的发射极连接所述第二三极管Q2的发射极，以及所述第一三极管Q1和所述第二三极管Q2的所述发射极之间的连接点与所述CP信号控制电路的信号输入端连接。
  6. 根据权利要求5所述的CP信号与CC信号检测系统，其特征在于，所述第一三极管Q1和所述第二三极管Q2的所述发射极之间的连接点与所述CP信号控制电路的信号输入端之间还连接有并联设置的第一二极管Ds和第一滤波电容Cs，并联的所述第一二极管Ds和所述第一滤波电容Cs的另一端接地。
  7. 根据权利要求1所述的CP信号与CC信号检测系统，其特征在于，所述CP信号控制电路包括第一开关管Q3、第二开关管Q4、第三开关管Q5、第四开关管Q6和第五开关管Q7，
    所述第一开关管Q3的源极连接所述CP信号生成电路的信号输出端，所述第一开关管Q3的漏极和所述第三开关管Q5的源极均连接所述外部CP信号输出端，所述第一开关管Q3的栅极连接所述第二开关管Q4的漏极，所述第三开关管Q5的栅极连接所述第四开关管Q6的漏极，所述第三开关管Q5的漏极连接所述CP信号控制电路的信号输出端；
    所述第二开关管Q4的栅极连接所述控制芯片的第二信号输出端，所述第二开关管Q4的源极接地，所述第四开关管Q6的栅极连接所述控制芯片的第三信号输出端，所述第四开关管Q6的源极接地；以及
    所述第五开关管Q7的栅极连接所述控制芯片的第四信号输出端，所述第五开关管Q7的源极接地，所述第五开关管Q7的漏极连接所述CP信号控制电路的信号输出端。
  8. 根据权利要求7所述的CP信号与CC信号检测系统，其特征在于，所述第五开关管Q7的栅极和第五开关管Q7源极之间还设置有RC滤波电路。
  9. 一种新能源汽车插座，其特征在于，
    连接放电枪或充电枪；以及
    布置如权利要求1-8任一项所述的CP信号与CC信号检测系统，所述CP信号与CC信号检测系统用于检测充电CP信号或放电CP信号，并将其反馈给所述新能源汽车，所述新能源汽车配置为根据所述充电CP信号控制所述充电枪给所述插座充电，以及新能源 汽车还配置为根据所述放电CP信号控制所述插座给外部用电设备充电。
PCT/CN2024/088904 2023-04-19 2024-04-19 Cp信号与cc信号检测系统及新能源汽车插座 Ceased WO2024217558A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202320877179.3U CN220009527U (zh) 2023-04-19 2023-04-19 Cp信号与cc信号检测系统及新能源汽车插座
CN202320877179.3 2023-04-19

Publications (1)

Publication Number Publication Date
WO2024217558A1 true WO2024217558A1 (zh) 2024-10-24

Family

ID=88682939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/088904 Ceased WO2024217558A1 (zh) 2023-04-19 2024-04-19 Cp信号与cc信号检测系统及新能源汽车插座

Country Status (2)

Country Link
CN (1) CN220009527U (zh)
WO (1) WO2024217558A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119806579A (zh) * 2024-12-17 2025-04-11 中航光电科技股份有限公司 一种电动汽车供电设备及通过cp信号升级其程序的烧录设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN220009527U (zh) * 2023-04-19 2023-11-14 长春捷翼汽车科技股份有限公司 Cp信号与cc信号检测系统及新能源汽车插座
CN120716486A (zh) * 2024-03-28 2025-09-30 比亚迪股份有限公司 一种车辆充电系统的放电控制方法、放电控制设备及车辆

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107757401A (zh) * 2017-09-25 2018-03-06 北京新能源汽车股份有限公司 车载双向充电机工作模式的控制方法、装置及电动汽车
CN211075600U (zh) * 2019-11-28 2020-07-24 深圳威迈斯新能源股份有限公司 信号控制电路及具有该信号控制电路的电动汽车
CN112937324A (zh) * 2019-12-11 2021-06-11 上海汽车集团股份有限公司 车载双向充电机的控制方法、电池管理系统及电动汽车
CN115378077A (zh) * 2022-08-23 2022-11-22 重庆长安汽车股份有限公司 一种车载充电机逆变放电cp信号产生电路
CN115416505A (zh) * 2022-08-12 2022-12-02 长春捷翼汽车零部件有限公司 充放电控制系统
CN220009527U (zh) * 2023-04-19 2023-11-14 长春捷翼汽车科技股份有限公司 Cp信号与cc信号检测系统及新能源汽车插座

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107757401A (zh) * 2017-09-25 2018-03-06 北京新能源汽车股份有限公司 车载双向充电机工作模式的控制方法、装置及电动汽车
CN211075600U (zh) * 2019-11-28 2020-07-24 深圳威迈斯新能源股份有限公司 信号控制电路及具有该信号控制电路的电动汽车
CN112937324A (zh) * 2019-12-11 2021-06-11 上海汽车集团股份有限公司 车载双向充电机的控制方法、电池管理系统及电动汽车
CN115416505A (zh) * 2022-08-12 2022-12-02 长春捷翼汽车零部件有限公司 充放电控制系统
CN115378077A (zh) * 2022-08-23 2022-11-22 重庆长安汽车股份有限公司 一种车载充电机逆变放电cp信号产生电路
CN220009527U (zh) * 2023-04-19 2023-11-14 长春捷翼汽车科技股份有限公司 Cp信号与cc信号检测系统及新能源汽车插座

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119806579A (zh) * 2024-12-17 2025-04-11 中航光电科技股份有限公司 一种电动汽车供电设备及通过cp信号升级其程序的烧录设备

Also Published As

Publication number Publication date
CN220009527U (zh) 2023-11-14

Similar Documents

Publication Publication Date Title
WO2024217558A1 (zh) Cp信号与cc信号检测系统及新能源汽车插座
CN201113523Y (zh) 直流输入型充电器
EP4027160B1 (en) Universal plug status detection circuit
CN112653098A (zh) 一种电池输出欠压保护电路
CN210327077U (zh) 快速充电电路及装置
CN215728732U (zh) 电动汽车pe断线检测电路和电动车辆
JPH08336281A (ja) 電気回路の残留電圧保護装置
CN109240255B (zh) 信号检测接口电路、系统及信号检测方法
CN116165500A (zh) 一种充放电mos管的故障检测装置及检测方法
CN214228219U (zh) 电表的高压电脉冲电路及电表
CN219838443U (zh) 驱动电路、驱动设备及用电设备
CN222097461U (zh) 一种高压互锁检测装置和车辆
CN114062805B (zh) 一种电动汽车交流充电控制导引信号的检测电路
CN214044999U (zh) 一种臭氧发生器的保护控制电路
CN206850404U (zh) 一种具有迟滞窗口宽范围输入的电源欠压保护电路
CN108599331A (zh) 一种电池充电器及其控制及显示方法
CN115236496A (zh) 一种互锁连接检测电路
CN206727632U (zh) 诊断信号短路检测电路
CN222654809U (zh) 一种过欠压保护电路、车载电源及车辆
CN209982101U (zh) 一种充电状态检测电路及装置
CN223809572U (zh) 一种具备过压保护和上电缓起功能的电池保护电路
CN218183047U (zh) 升压充电电路
CN220509043U (zh) 用于测试电容寿命的检测电路和电容寿命控制系统
CN218330389U (zh) 气流传感电路以及电子雾化装置
CN218273144U (zh) 发热控制电路以及电子雾化装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24792141

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 24792141

Country of ref document: EP

Kind code of ref document: A1