CN116632980A - A self-adaptive charging system and method for 12V and 24V auxiliary power supplies - Google Patents
A self-adaptive charging system and method for 12V and 24V auxiliary power supplies Download PDFInfo
- Publication number
- CN116632980A CN116632980A CN202310728506.3A CN202310728506A CN116632980A CN 116632980 A CN116632980 A CN 116632980A CN 202310728506 A CN202310728506 A CN 202310728506A CN 116632980 A CN116632980 A CN 116632980A
- Authority
- CN
- China
- Prior art keywords
- voltage
- vehicle
- control unit
- charged
- auxiliary power
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 230000003044 adaptive effect Effects 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明公开了一种12V和24V辅助电源的自适应充电系统及方法，包括：控制单元，自动适配控制充电桩输出12V或者24V电压；被充车辆电源开关连接在控制单元与被充车辆的汽车电源之间；检测单元，向控制单元传输反馈信号。方法为：当充电桩对外充电时，闭合被充车辆电源开关；利用检测单元向控制单元传输反馈信号；控制单元自动适配控制充电桩输出12V或者24V电压；断开被充车辆电源开关，检测单元中对正向输入端电压进行保持，充电桩保持输出12V或者24V电压。本发明能够自动适配与被充车辆一致的电压系统，在充电开始后当使用者关闭被充车辆电源开关后，系统继续为被充车辆提供匹配的电压辅助电源。
The invention discloses an adaptive charging system and method for 12V and 24V auxiliary power supplies, comprising: a control unit, which automatically adapts and controls the charging pile to output 12V or 24V voltage; Between the car power supply; the detection unit transmits the feedback signal to the control unit. The method is: when the charging pile is charging externally, close the power switch of the vehicle being charged; use the detection unit to transmit a feedback signal to the control unit; the control unit automatically adapts and controls the charging pile to output 12V or 24V voltage; disconnect the power switch of the vehicle being charged, and detect The positive input terminal voltage is maintained in the unit, and the charging pile maintains an output voltage of 12V or 24V. The invention can automatically adapt the voltage system consistent with the charged vehicle, and after the user turns off the power switch of the charged vehicle after the charging starts, the system continues to provide the matched voltage auxiliary power supply for the charged vehicle.
Description
技术领域technical field
本发明涉及一种适应充电系统及方法，尤其涉及一种12V和24V辅助电源的自适应充电系统及方法。The invention relates to an adaptive charging system and method, in particular to an adaptive charging system and method for 12V and 24V auxiliary power supplies.
背景技术Background technique
根据辅助电压不同,市面上的直流充电桩有2种：12V辅助电源和24V辅助电源，并且大多数充电桩仅支持12V辅助电源，少部分两者都支持。两者都支持的输出电源的切换控制方法包括以下：According to different auxiliary voltages, there are two types of DC charging piles on the market: 12V auxiliary power supply and 24V auxiliary power supply, and most charging piles only support 12V auxiliary power supply, and a few support both. The switching control methods of the output power supported by both include the following:
手动控制输出的辅助电压12V或者24V。具体控制方式比如手动开关或者界面选择，硬件继电器切换等控制方法，手动控制方式容易存在人为因素的误操作或者误判断，从而损坏设备，造成严重的经济损失。Manual control output auxiliary voltage 12V or 24V. Specific control methods such as manual switch or interface selection, hardware relay switching and other control methods, manual control methods are prone to misoperation or misjudgment due to human factors, which will damage the equipment and cause serious economic losses.
通过12V输出电流进行判断，例如输出12V时，通过辅助回路的电流是否大于某个阈值，若大于某个阈值即认为该被充车辆属于12V电压系统，若小于某个阈值，即判断该车辆属于24V电压系统，随即切换至24V电压工作系统。而市面上被充车辆的辅助激活电源的需求功率不统一，会导致辅助电压回路的电路也不一样，这样会造成电流检测阈值的错误判断，从而导致输出的辅助电压与被充车辆不一致的情况，同样会造成经济损失，此类方式检测成本较高，需要变更已有充电桩的软件程序。Judging by the 12V output current, for example, when outputting 12V, whether the current passing through the auxiliary circuit is greater than a certain threshold, if it is greater than a certain threshold, it is considered that the charged vehicle belongs to the 12V voltage system, if it is less than a certain threshold, it is judged that the vehicle belongs to 24V voltage system, then switch to 24V voltage working system. However, the required power of the auxiliary activation power supply of the charged vehicle on the market is not uniform, which will lead to a different circuit of the auxiliary voltage circuit, which will cause a wrong judgment of the current detection threshold, resulting in the inconsistent output of the auxiliary voltage and the charged vehicle. , will also cause economic losses. This type of detection cost is relatively high, and the software program of the existing charging pile needs to be changed.
目前，缺乏一种通过检测被充车辆的电压，能够自动适配与被充车辆一致的电压系统，避免了人为操作因素和误判的情况出现。At present, there is a lack of a voltage system that can automatically adapt to the voltage of the vehicle being charged by detecting the voltage of the vehicle being charged, so as to avoid human operation factors and misjudgment.
发明内容Contents of the invention
为了解决上述技术所存在的不足之处，本发明提供了一种12V和24V辅助电源的自适应充电系统及方法。In order to solve the shortcomings of the above-mentioned technologies, the present invention provides an adaptive charging system and method for 12V and 24V auxiliary power supplies.
为了解决以上技术问题，本发明采用的技术方案是一种12V和24V辅助电源的自适应充电系统，包括：In order to solve the above technical problems, the technical solution adopted in the present invention is an adaptive charging system for 12V and 24V auxiliary power supplies, including:
控制单元，根据检测被充车辆电源的电压值自动适配控制充电桩输出12V或者24V辅助电压；The control unit automatically adapts and controls the charging pile to output 12V or 24V auxiliary voltage according to the voltage value of the detected vehicle power supply;
被充车辆电源开关，连接在控制单元与被充车辆的汽车电源之间；The power switch of the vehicle to be charged is connected between the control unit and the vehicle power supply of the vehicle to be charged;
检测单元，在被充车辆电源开关闭合时检测被充车辆电源的电压值并向控制单元传输反馈信号。The detection unit detects the voltage value of the power supply of the vehicle to be charged when the power switch of the vehicle to be charged is closed and transmits a feedback signal to the control unit.
进一步地，检测单元检测被充车辆电源的电压值是基于运算放大器的正向输入端与负向输入端的比较结果向控制单元传输反馈信号，正向输入端连接被充车辆电源开关，负向输入端为定值。Further, the detection unit detects the voltage value of the charged vehicle power supply based on the comparison result of the positive input terminal and the negative input terminal of the operational amplifier to transmit a feedback signal to the control unit, the positive input terminal is connected to the vehicle power switch to be charged, and the negative input terminal End is a fixed value.
进一步地，检测单元中运算放大器的正向输入端连接有被充车辆电源开关断开时对正向输入端电压进行保持的电压保持回路。Further, the positive input terminal of the operational amplifier in the detection unit is connected with a voltage holding circuit for maintaining the voltage of the positive input terminal when the power switch of the vehicle to be charged is turned off.
进一步地，被充车辆的电源为12V电压系统时，正向输入端的值小于负向输入端时，运算放大器向控制单元输出低电平，被充车辆的电源为24V电压系统时，正向输入端的值大于负向输入端时，运算放大器向控制单元输出高电平。Further, when the power supply of the vehicle to be charged is a 12V voltage system, when the value of the positive input terminal is smaller than the negative input terminal, the operational amplifier outputs a low level to the control unit; when the power supply of the vehicle to be charged is a 24V voltage system, the positive input When the value of the terminal is greater than the negative input terminal, the operational amplifier outputs a high level to the control unit.
进一步地，控制单元包括12V辅助电源输出电路和24V辅助电源输出电路，12V辅助电源输出电路和24V辅助电源输出电路的公共端连接被充车辆电源开关。Further, the control unit includes a 12V auxiliary power output circuit and a 24V auxiliary power output circuit, and the common end of the 12V auxiliary power output circuit and the 24V auxiliary power output circuit is connected to the power switch of the vehicle to be charged.
进一步地，控制单元根据检测单元的反馈信号自动适配控制充电桩输出12V或者24V输出电压是基于NPN型三极管的开关或者截止控制位于24V辅助电源输出电路的上的P型MOS管的导通与关断所实现。Further, the control unit automatically adapts and controls the charging pile to output 12V or 24V output voltage according to the feedback signal of the detection unit. shutdown is achieved.
进一步地，NPN型三极管的基极连接运算放大器的输出端，NPN型三极管的集电级分别通过电阻连接在P型MOS管的源极以及P型MOS管的栅极上，NPN型三极管的发射级接地，P型MOS管的源极以及P型MOS管的漏极串接到24V辅助电源输出电路中。Further, the base of the NPN transistor is connected to the output terminal of the operational amplifier, the collector of the NPN transistor is respectively connected to the source of the P-type MOS transistor and the grid of the P-type MOS transistor through resistors, and the emitter of the NPN transistor The stage is grounded, and the source of the P-type MOS tube and the drain of the P-type MOS tube are connected in series to the 24V auxiliary power output circuit.
进一步地，当NPN型三极管的基极接收到运算放大器的低电平时，NPN型三极管截止，P型MOS管的源极的电压等于P型MOS管的栅极的电压，P型MOS管关断，控制单元自动适配控制充电桩输出12V电压。Further, when the base of the NPN transistor receives the low level of the operational amplifier, the NPN transistor is cut off, the voltage of the source of the P-type MOS transistor is equal to the voltage of the gate of the P-type MOS transistor, and the P-type MOS transistor is turned off. , the control unit automatically adapts and controls the charging pile to output 12V voltage.
进一步地，当NPN型三极管的基极接收到运算放大器的高电平时，NPN型三极管的导通，P型MOS管的源极的电压大于P型MOS管的栅极的电压，P型MOS管导通，控制单元自动适配控制充电桩输出24V电压。Further, when the base of the NPN transistor receives the high level of the operational amplifier, the NPN transistor is turned on, the voltage of the source of the P-type MOS transistor is greater than the voltage of the gate of the P-type MOS transistor, and the P-type MOS transistor When it is turned on, the control unit automatically adapts and controls the charging pile to output 24V voltage.
一种12V和24V辅助电源的自适应充电系统的自适应充电方法，自适应充电方法的为：An adaptive charging method for an adaptive charging system of 12V and 24V auxiliary power supplies, the adaptive charging method is:
S1，接通控制单元的12V辅助电源输出电路和24V辅助电源输出电路；S1, connect the 12V auxiliary power output circuit and the 24V auxiliary power output circuit of the control unit;
S2，闭合被充车辆电源开关连通控制单元与被充车辆电源开关；S2, closing the power switch of the vehicle to be charged and connecting the control unit with the power switch of the vehicle to be charged;
S3，利用检测单元检测被充车辆电源的电压值并向控制单元传输反馈信号；S3, using the detection unit to detect the voltage value of the charged vehicle power supply and transmitting a feedback signal to the control unit;
S4，控制单元自动适配控制充电桩输出12V或者24V电压；S4, the control unit automatically adapts and controls the charging pile to output 12V or 24V voltage;
S5，断开被充车辆电源开关，检测单元中运算放大器的正向输入端连接的电压保持回路对正向输入端电压进行保持，充电桩保持输出12V或者24V电压。S5, turn off the power switch of the vehicle to be charged, the voltage holding circuit connected to the positive input end of the operational amplifier in the detection unit holds the positive input end voltage, and the charging pile keeps outputting 12V or 24V voltage.
本发明公开了一种12V和24V辅助电源的自适应充电系统及方法，综上所述，本发明的的系统默认输出12V电压，通过检测被充车辆的电压，能够自动适配与被充车辆一致的电压系统，避免了人为操作因素，也不存在误判的情况出现，以极低成本的方式实现现有充电桩的改造，不需要更改原有的控制程序或者电路，同时检测单元具备在被充车辆电源开关断开时对正向输入端电压进行保持，从而在充电开始后当使用者关闭被充车辆电源开关后，系统继续为车辆电源进行充电。The present invention discloses an adaptive charging system and method for 12V and 24V auxiliary power supplies. In summary, the system of the present invention outputs 12V voltage by default, and can automatically adapt to the charged vehicle by detecting the voltage of the charged vehicle. The consistent voltage system avoids human operation factors, and there is no misjudgment. It realizes the transformation of the existing charging pile at a very low cost without changing the original control program or circuit. At the same time, the detection unit is equipped with When the power switch of the vehicle to be charged is turned off, the positive input terminal voltage is maintained, so that after the user turns off the power switch of the vehicle to be charged after the charging starts, the system continues to charge the power supply of the vehicle.
附图说明Description of drawings
图1为本发明的系统结构示意图。Fig. 1 is a schematic diagram of the system structure of the present invention.
图2为本发明的电路原理图。Fig. 2 is a schematic circuit diagram of the present invention.
图3为本发明方法的流程示意图。Fig. 3 is a schematic flow chart of the method of the present invention.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明作进一步详细的说明。The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
如图1所示的12V和24V辅助电源的自适应充电系统，包括控制单元1、被充车辆电源开关2以及检测单元3，控制单元1根据检测被充车辆电源的电压值自动适配控制充电桩输出12V或者24V电压，检测单元3在被充车辆电源开关2闭合时检测被充车辆电源的电压值并向控制单元1传输反馈信号，被充车辆电源开关4作为被充车辆的电源钥匙开关，连接在控制单元1与汽车电源之间。The adaptive charging system for 12V and 24V auxiliary power as shown in Figure 1 includes a control unit 1, a power switch 2 of the vehicle to be charged, and a detection unit 3. The control unit 1 automatically adapts and controls charging according to the voltage value of the detected vehicle power supply The pile outputs 12V or 24V voltage. The detection unit 3 detects the voltage value of the vehicle power supply to be charged when the vehicle power switch 2 is closed and transmits a feedback signal to the control unit 1. The vehicle power switch 4 is used as the power key switch of the vehicle to be charged. , connected between the control unit 1 and the car power supply.
具体的，控制单元1包括12V辅助电源输出电路和24V辅助电源输出电路，如图2所示电路图中12V辅助电源输出电路中串联有继电器JK1和二极管D1，24V辅助电源输出电路中串联有继电器JK3、P型MOS管Q1以及二极管D2，由于二极管D1和二极管D2的单向导通作用，在二极管D1和二极管D2的公共端只能输出12V或24V，二极管D1和二极管D2的公共端通过被充车辆电源开关SW1连接被充车辆电源开关SW1，被充车辆电源开关SW1连接被充车辆的汽车电源CAR_V+上，继电器JK1、继电器JK3的线圈控制由充电桩控制板上的输出的控制电路控制，继电器的线圈的控制开合属于现有技术，这里不做详述，在需要给被充车辆输出辅助电压时，控制继电器JK1、继电器JK3线圈吸合，开始充电时被充车辆电源开关SW1闭合，绝大多数情况下，二极管D1和二极管D2的公共端输出12V电压，检测单元3通过闭合的被充车辆电源开关SW1检测被充车辆电源的电压值。Specifically, the control unit 1 includes a 12V auxiliary power output circuit and a 24V auxiliary power output circuit. As shown in FIG. , P-type MOS transistor Q1 and diode D2, due to the one-way conduction effect of diode D1 and diode D2, only 12V or 24V can be output at the common end of diode D1 and diode D2, and the common end of diode D1 and diode D2 passes through the charged vehicle The power switch SW1 is connected to the power switch SW1 of the vehicle to be charged, and the power switch SW1 of the vehicle to be charged is connected to the car power supply CAR_V+ of the vehicle to be charged. The coil control of the relay JK1 and relay JK3 is controlled by the output control circuit on the charging pile control board. The control opening and closing of the coil belongs to the existing technology, and will not be described in detail here. When the auxiliary voltage needs to be output to the vehicle to be charged, the coils of the control relay JK1 and the relay JK3 are closed, and the power switch SW1 of the vehicle to be charged is closed when charging starts. In most cases, the common terminal of the diode D1 and the diode D2 outputs a voltage of 12V, and the detection unit 3 detects the voltage value of the vehicle power supply through the closed vehicle power switch SW1 to be charged.
检测单元3是基于运算放大器U1A的正向输入端与负向输入端的比较结果向控制单元1传输反馈信号，正向输入端连接在电阻R3和电阻R4组成的分压电路的公共端上，正向输入端的电压值为R3*CAR_V+/（R3+R4）；运算放大器U1A的负向输入端连接至另一分压电路为定值，同理，负向输入端的电压值为R8*12V+/（R8+R9）；如果被充车辆的电源为12V电压系统时，通过对电阻R3、电阻R4、电阻R8、电阻R9的选型保证正向输入端的值小于负向输入端时，运算放大器U1A向控制单元1输出低电平；如果被充车辆的电源为24V电压系统时，通过对电阻R3、电阻R4、电阻R8、电阻R9的选型保证正向输入端的值大于负向输入端时，运算放大器向控制单元1输出高电平。The detection unit 3 transmits a feedback signal to the control unit 1 based on the comparison result between the positive input terminal and the negative input terminal of the operational amplifier U1A. The positive input terminal is connected to the common terminal of the voltage divider circuit composed of the resistor R3 and the resistor R4. The voltage value of the input terminal is R3*CAR_V+/(R3+R4); the negative input terminal of the operational amplifier U1A is connected to another voltage divider circuit as a fixed value, and similarly, the voltage value of the negative input terminal is R8*12V+/( R8+R9); if the power supply of the vehicle to be charged is a 12V voltage system, the value of the positive input terminal is guaranteed to be smaller than the negative input terminal through the selection of resistor R3, resistor R4, resistor R8, and resistor R9. Control unit 1 outputs low level; if the power supply of the vehicle to be charged is a 24V voltage system, the value of the positive input end is greater than the negative input end through the selection of resistor R3, resistor R4, resistor R8, and resistor R9. The amplifier outputs a high level to the control unit 1.
控制单元1根据检测单元3的反馈信号自动适配控制充电桩输出12V或者24V输出电压是基于NPN型三极管的开关或者截止控制位于24V辅助电源输出电路的上的P型MOS管的导通与关断所实现。The control unit 1 automatically adapts and controls the charging pile to output 12V or 24V according to the feedback signal of the detection unit 3. The output voltage is based on the switch or cut-off of the NPN transistor to control the conduction and shutdown of the P-type MOS transistor located on the 24V auxiliary power output circuit. realized.
具体的，NPN型三极管Q2的基极通过电阻R5连接运算放大器U1A的输出端，NPN型三极管Q2的集电级通过电阻R1连接P型MOS管Q1的源极，通过电阻R2连接P型MOS管Q1的栅极上，NPN型三极管Q2的发射级接地，P型MOS管Q1的源极以及P型MOS管Q1的漏极串接到24V辅助电源输出电路中。当NPN型三极管Q2的基极接收到运算放大器U1A的低电平时，NPN型三极管Q2截止，P型MOS管Q1的源极的电压等于P型MOS管Q1的栅极的电压，P型MOS管Q1关断，控制单元1自动适配控制充电桩输出12V电压。当NPN型三极管Q2的基极接收到运算放大器的高电平时，NPN型三极管Q2导通，通过电阻R1和电阻R2的选型，使P型MOS管Q1的源极的电压大于P型MOS管Q1的栅极的电压，P型MOS管Q1导通，控制单元1自动适配控制充电桩输出24V电压。Specifically, the base of the NPN transistor Q2 is connected to the output terminal of the operational amplifier U1A through the resistor R5, the collector of the NPN transistor Q2 is connected to the source of the P-type MOS transistor Q1 through the resistor R1, and connected to the source of the P-type MOS transistor through the resistor R2. On the gate of Q1, the emitter of the NPN transistor Q2 is grounded, and the source of the P-type MOS transistor Q1 and the drain of the P-type MOS transistor Q1 are connected in series to the 24V auxiliary power output circuit. When the base of the NPN transistor Q2 receives the low level of the operational amplifier U1A, the NPN transistor Q2 is cut off, and the voltage of the source of the P-type MOS transistor Q1 is equal to the voltage of the gate of the P-type MOS transistor Q1, and the P-type MOS transistor Q1 Q1 is turned off, and the control unit 1 automatically adapts and controls the charging pile to output 12V voltage. When the base of the NPN transistor Q2 receives the high level of the operational amplifier, the NPN transistor Q2 is turned on, and the voltage of the source of the P-type MOS transistor Q1 is greater than that of the P-type MOS transistor through the selection of the resistor R1 and resistor R2. The gate voltage of Q1, the P-type MOS transistor Q1 is turned on, and the control unit 1 automatically adapts and controls the charging pile to output 24V voltage.
检测单元3中运算放大器的正向输入端连接有被充车辆电源开关断开时对正向输入端电压进行保持的电压保持回路，电压保持回路包括电阻R4、电容C1、电阻R7组成的回路，电阻R4选择高阻抗，当被充车辆电源开关SW1闭合时，电阻R4、电容C1、电阻R7组成的回为电容C1充电，当被充车辆电源开关SW1断开时，由于电阻R4阻抗大，电容C1放电慢，使运算放大器U1A的正向输入端不会瞬间降低，从而不影响P型MOS管Q1状态的改变和24V电压的输出，从而为BMS电池管理系统供电，实现在断开被充车辆电源开关的情况下不断电。The positive input terminal of the operational amplifier in the detection unit 3 is connected with a voltage holding circuit for maintaining the voltage of the positive input terminal when the power switch of the charged vehicle is turned off. The voltage holding circuit includes a circuit composed of a resistor R4, a capacitor C1, and a resistor R7. Resistor R4 selects high impedance. When the power switch SW1 of the vehicle to be charged is closed, the circuit composed of resistor R4, capacitor C1 and resistor R7 charges the capacitor C1. The discharge of C1 is slow, so that the positive input terminal of the operational amplifier U1A will not drop instantly, so as not to affect the change of the state of the P-type MOS tube Q1 and the output of 24V voltage, so as to supply power for the BMS battery management system, and realize the charging when the vehicle is disconnected. Uninterruptible power supply in the case of the power switch.
本发明还公开了一种12V和24V辅助电源的自适应充电系统的自适应充电方法，如图3所示，自适应充电方法为，开始时，在充电桩上点击开始充电，JK1、JK3继电器闭合，接通控制单元的12V辅助电源输出电路和24V辅助电源输出电路；闭合被充车辆电源开关连通控制单元与被充车辆的电源；利用检测单元检测被充车辆电源的电压系统是12V还是24V并向控制单元传输反馈信号；输出12V或者输出24V电压后关闭被充车辆电源开关，检测单元在被充车辆电源开关断开时对正向输入端电压进行保持，使被充车辆继续充电，最后判断充电过程是否结束，关闭JK1、JK3继电器结束充电。The present invention also discloses an adaptive charging method of an adaptive charging system for 12V and 24V auxiliary power supplies. As shown in Figure 3, the adaptive charging method is as follows: at the beginning, click on the charging pile to start charging, and JK1 and JK3 relays Close, turn on the 12V auxiliary power output circuit and 24V auxiliary power output circuit of the control unit; close the power switch of the vehicle to be charged to connect the control unit and the power of the vehicle to be charged; use the detection unit to detect whether the voltage system of the power supply of the vehicle to be charged is 12V or 24V And transmit the feedback signal to the control unit; after outputting 12V or 24V voltage, turn off the power switch of the charged vehicle, and the detection unit will keep the positive input terminal voltage when the power switch of the charged vehicle is turned off, so that the charged vehicle continues to charge, and finally Judging whether the charging process is over, close the JK1 and JK3 relays to end the charging.
综上所述，本发明的的系统默认输出12V电压，通过检测被充车辆的电压，能够自动适配与被充车辆一致的电压系统，避免了人为操作因素，也不存在误判的情况出现，以极低成本的方式实现现有充电桩的改造，不需要更改原有的控制程序或者电路，同时检测单元具备在充车辆电源开关断开时对正向输入端电压进行保持，从而在充电开始后当使用者关闭被充车辆电源开关后，系统继续为车辆电源进行充电。To sum up, the system of the present invention outputs 12V voltage by default. By detecting the voltage of the charged vehicle, it can automatically adapt to the voltage system consistent with the charged vehicle, avoiding human operation factors, and there is no misjudgment. , to realize the transformation of the existing charging pile in a very low-cost way, without changing the original control program or circuit, and at the same time, the detection unit is capable of maintaining the voltage of the positive input terminal when the power switch of the charging vehicle is turned off, so that it can be charged during charging. After the start, when the user turns off the power switch of the vehicle being charged, the system continues to charge the vehicle power supply.
上述实施方式并非是对本发明的限制，本发明也并不仅限于上述举例，本技术领域的技术人员在本发明的技术方案范围内所做出的变化、改型、添加或替换，也均属于本发明的保护范围。The above-mentioned embodiments are not limitations to the present invention, and the present invention is not limited to the above-mentioned examples, and changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present invention also belong to this invention. protection scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310728506.3A CN116632980A (en) | 2023-06-20 | 2023-06-20 | A self-adaptive charging system and method for 12V and 24V auxiliary power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310728506.3A CN116632980A (en) | 2023-06-20 | 2023-06-20 | A self-adaptive charging system and method for 12V and 24V auxiliary power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116632980A true CN116632980A (en) | 2023-08-22 |
Family
ID=87597413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310728506.3A Pending CN116632980A (en) | 2023-06-20 | 2023-06-20 | A self-adaptive charging system and method for 12V and 24V auxiliary power supplies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116632980A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100005600U (en) * | 2008-11-24 | 2010-06-03 | 퍼펙트파워(주) | Power supply circuit for car |
| CN205725042U (en) * | 2016-05-05 | 2016-11-23 | 徐州曼特电子有限公司 | Electric automobile charging pile accessory power supply 12V, 24V compatibility charging circuit |
| WO2020103474A1 (en) * | 2018-11-21 | 2020-05-28 | 深圳市道通智能航空技术有限公司 | Charging circuit and charging system |
| CN112769174A (en) * | 2020-12-28 | 2021-05-07 | 山东鲁能软件技术有限公司智能电气分公司 | Auxiliary power supply for off-board charging motor and method thereof |
| CN113165541A (en) * | 2020-08-10 | 2021-07-23 | 深圳欣锐科技股份有限公司 | Circuit, method and system for charging low-voltage battery |
| CN114509601A (en) * | 2022-02-17 | 2022-05-17 | 国网四川省电力公司营销服务中心 | Demagnetization circuit and electronic current sensor |
| CN115241962A (en) * | 2022-07-12 | 2022-10-25 | 筑创科技(东莞)有限公司 | Emergency power supply for vehicle |
| CN115276171A (en) * | 2022-08-11 | 2022-11-01 | 如果新能源科技(江苏)股份有限公司 | Charging control device and off-grid power supply system |
-
2023
- 2023-06-20 CN CN202310728506.3A patent/CN116632980A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100005600U (en) * | 2008-11-24 | 2010-06-03 | 퍼펙트파워(주) | Power supply circuit for car |
| CN205725042U (en) * | 2016-05-05 | 2016-11-23 | 徐州曼特电子有限公司 | Electric automobile charging pile accessory power supply 12V, 24V compatibility charging circuit |
| WO2020103474A1 (en) * | 2018-11-21 | 2020-05-28 | 深圳市道通智能航空技术有限公司 | Charging circuit and charging system |
| CN113165541A (en) * | 2020-08-10 | 2021-07-23 | 深圳欣锐科技股份有限公司 | Circuit, method and system for charging low-voltage battery |
| CN112769174A (en) * | 2020-12-28 | 2021-05-07 | 山东鲁能软件技术有限公司智能电气分公司 | Auxiliary power supply for off-board charging motor and method thereof |
| CN114509601A (en) * | 2022-02-17 | 2022-05-17 | 国网四川省电力公司营销服务中心 | Demagnetization circuit and electronic current sensor |
| CN115241962A (en) * | 2022-07-12 | 2022-10-25 | 筑创科技(东莞)有限公司 | Emergency power supply for vehicle |
| CN115276171A (en) * | 2022-08-11 | 2022-11-01 | 如果新能源科技(江苏)股份有限公司 | Charging control device and off-grid power supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2405539A2 (en) | Standby power shut-off device and a control method therefor | |
| JPH01283033A (en) | Feeder | |
| TW201914158A (en) | High voltage power-off method for electric vehicle | |
| CN214590727U (en) | Charging device | |
| CN212649434U (en) | Power switch circuit with watchdog function | |
| CN106597974B (en) | Control device and control method of external circuit breaker of electric energy meter | |
| CN116632980A (en) | A self-adaptive charging system and method for 12V and 24V auxiliary power supplies | |
| CN108488948B (en) | Air conditioner, air conditioner control system and outdoor unit switch circuit | |
| CN110120678B (en) | Energy storage converter | |
| CN110518543A (en) | A kind of short-circuit protection circuit and power supply system | |
| US11821928B2 (en) | Charging apparatus and charging method of operating the same | |
| CN104333113A (en) | Power circuit | |
| CN211739425U (en) | Get electric circuit, drive-by-wire ware, air conditioner | |
| CN212289727U (en) | Vehicle power-on and power-off control circuit | |
| CN211183793U (en) | PFC control circuit | |
| CN210350835U (en) | Battery charging circuit and device | |
| CN114189139A (en) | Slow starting circuit, power supply system and electronic equipment | |
| CN109560603B (en) | Power generation module, control method thereof and dual-power automatic transfer switch controller | |
| CN112992606A (en) | Relay driving circuit and method and relay system of grid-connected inverter | |
| CN218102695U (en) | Power supply switching circuit and vehicle | |
| JP2003189497A (en) | Charging circuit | |
| CN111174390A (en) | Power taking circuit, wire controller, air conditioner and resistance control method | |
| CN211656112U (en) | Automatic time-delay switch | |
| CN215344366U (en) | Delay controllable pull-up extension device | |
| CN220873487U (en) | Automobile driving relay holding circuit and automobile control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230822 |