CN208043276U - Temperature-detecting device and charging gun, charging socket equipped with the temperature-detecting device - Google Patents
Temperature-detecting device and charging gun, charging socket equipped with the temperature-detecting device Download PDFInfo
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Abstract
本实用新型提供一种温度检测装置和设有该温度检测装置的充电枪、充电插座，其中充电枪和充电插座均设有温度检测装置，用于检测充电枪的温度。温度检测装置包括处理器，电源和至少两个热敏电阻，各热敏电阻与电源连接，形成回路；各热敏电阻的两端均连接有相应的电压检测电路，电压检测电路用于检测相应热敏电阻两端的电压；处理器采集连接各电压检测电路。本实用新型所提供的技术方案，在温度检测装置内设置至少两个热敏电阻，将热敏电阻设置在需要进行温度检测的地方，处理器根据各电压检测电路检测到的各热敏电阻的电压得到各热敏电阻的电阻值，并根据各热敏电阻的电阻值得到各热敏电阻所处位置的温度，从而对充电枪进行多点温度检测。
The utility model provides a temperature detecting device, a charging gun and a charging socket provided with the temperature detecting device, wherein both the charging gun and the charging socket are equipped with a temperature detecting device for detecting the temperature of the charging gun. The temperature detection device includes a processor, a power supply and at least two thermistors, each thermistor is connected to the power supply to form a loop; both ends of each thermistor are connected to a corresponding voltage detection circuit, and the voltage detection circuit is used to detect the corresponding The voltage at both ends of the thermistor; the processor collects and connects each voltage detection circuit. In the technical solution provided by the utility model, at least two thermistors are arranged in the temperature detection device, and the thermistors are arranged at places where temperature detection is required, and the processor detects the temperature of each thermistor according to each voltage detection circuit. The resistance value of each thermistor is obtained from the voltage, and the temperature at the position of each thermistor is obtained according to the resistance value of each thermistor, so as to perform multi-point temperature detection on the charging gun.
Description
技术领域technical field
本实用新型属于充电设置检测安全检测技术领域，具体涉及一种温度检测装置和设有该温度检测装置的充电枪、充电插座。The utility model belongs to the technical field of charging setting detection safety detection, in particular to a temperature detection device, a charging gun and a charging socket provided with the temperature detection device.
背景技术Background technique
电动车辆是以动力电池为动力源的车辆，相对于传统以发动机为动力源的车辆，具有清洁、无污染、噪音小等优点，在传统能源消耗量逐渐增加和环境日益恶化的今天，电动车辆越来越受消费者的欢迎。Electric vehicles are vehicles powered by power batteries. Compared with traditional vehicles powered by engines, they have the advantages of cleanliness, no pollution, and low noise. Today, with the traditional energy consumption increasing and the environment deteriorating, electric vehicles more and more popular with consumers.
电动车辆以动力电池为动力源，动力电池所存储的电量用尽之后需要为动力电池充电。目前动力电池常用的充电方法，是将充电桩上的充电枪连接到车辆的充电插座上，充电枪从充电桩上取电后为动力电池充电。在充电过程中充电枪会产生热量，使充电枪的温度升高。充电枪的温度过高会影响充电效率，严重的会烧坏线路，甚至引发安全事故。因此，为了保证动力电池的充电安全，需要在充电过程中对充电枪处的温度进行检测。Electric vehicles use the power battery as the power source, and the power battery needs to be charged after the power stored in the power battery is exhausted. At present, the commonly used charging method for power batteries is to connect the charging gun on the charging pile to the charging socket of the vehicle, and the charging gun will charge the power battery after taking power from the charging pile. During the charging process, the charging gun will generate heat, which will increase the temperature of the charging gun. If the temperature of the charging gun is too high, it will affect the charging efficiency, and if it is serious, it will burn out the circuit and even cause a safety accident. Therefore, in order to ensure the charging safety of the power battery, it is necessary to detect the temperature at the charging gun during the charging process.
充电枪处的温度可以直接对充电枪进行温度检测得到，也可以通过对充电插座进行温度检测得到。目前，对充电枪进行温度检测的温度传感器通常都只能对充电枪的某一部位进行检测，但是为了充分检测到充电枪在实际工作过程中的温度变化，可能需要对充电枪的多个部位进行温度检测，如此便需要设置多个温度传感器。但是设置多个温度传感器不仅会导致成本的增加，而且由于充电枪的体积比较小，没有足够的空间设置多个温度传感器。The temperature at the charging gun can be obtained by directly detecting the temperature of the charging gun, or by detecting the temperature of the charging socket. At present, the temperature sensor that detects the temperature of the charging gun can only detect a certain part of the charging gun, but in order to fully detect the temperature change of the charging gun in the actual working process, it may be necessary to monitor multiple parts of the charging gun For temperature detection, multiple temperature sensors need to be set. However, arranging multiple temperature sensors will not only lead to an increase in cost, but also due to the relatively small volume of the charging gun, there is not enough space for arranging multiple temperature sensors.
实用新型内容Utility model content
本实用新型提供一种温度检测装置和设有该温度检测装置的充电枪、充电插座，用于解决对充电枪进行多点温度检测时成本较高的问题。The utility model provides a temperature detection device, a charging gun and a charging socket equipped with the temperature detection device, which are used to solve the problem of high cost when multi-point temperature detection is performed on the charging gun.
为实现上述目的，本实用新型提供的技术方案是：In order to achieve the above object, the technical solution provided by the utility model is:
装置方案1：一种温度检测装置，包括处理器，电源和至少两个热敏电阻，各热敏电阻与电源连接，形成回路；Device scheme 1: a temperature detection device, including a processor, a power supply and at least two thermistors, each thermistor is connected to the power supply to form a loop;
各热敏电阻的两端均连接有相应的电压检测电路，电压检测电路用于检测相应热敏电阻两端的电压；所述处理器采集连接各电压检测电路。Both ends of each thermistor are connected with a corresponding voltage detection circuit, and the voltage detection circuit is used to detect the voltage at both ends of the corresponding thermistor; the processor collects and connects each voltage detection circuit.
本实用新型所提供的技术方案，在温度检测装置内设置至少两个热敏电阻，将热敏电阻设置在需要进行温度检测的地方，处理器根据各电压检测电路检测到的各热敏电阻的电压得到各热敏电阻的电阻值，并根据各热敏电阻的电阻值得到各热敏电阻所处位置的温度，从而对充电枪进行多点温度检测。In the technical solution provided by the utility model, at least two thermistors are arranged in the temperature detection device, and the thermistors are arranged at places where temperature detection is required, and the processor detects the temperature of each thermistor according to each voltage detection circuit. The resistance value of each thermistor is obtained from the voltage, and the temperature at the position of each thermistor is obtained according to the resistance value of each thermistor, so as to perform multi-point temperature detection on the charging gun.
装置方案2：在装置方案1的基础上，所述电源为恒流源，各热敏电阻串联后连接在恒流源的两侧。Device scheme 2: On the basis of device scheme 1, the power supply is a constant current source, and each thermistor is connected in series to both sides of the constant current source.
装置方案3：在装置方案2的基础上，所述恒流源包括恒压源和运算放大器，恒压源连接运算放大器的同相输入端，运算放大器的输出端为恒流源的正极，运算放大器的反相输入端为恒流源的负极。Device scheme 3: On the basis of device scheme 2, the constant current source includes a constant voltage source and an operational amplifier, the constant voltage source is connected to the non-inverting input terminal of the operational amplifier, the output terminal of the operational amplifier is the positive pole of the constant current source, and the operational amplifier The inverting input terminal of is the negative pole of the constant current source.
采用恒流源作为电源，将各热敏电阻串联，则各热敏电阻的电阻值与电压值成正比，当检测到各热敏电阻的电压值后，能够快速计算出各热敏电阻的电阻值。Using a constant current source as the power supply and connecting the thermistors in series, the resistance value of each thermistor is proportional to the voltage value. When the voltage value of each thermistor is detected, the resistance of each thermistor can be quickly calculated value.
装置方案4：在装置方案3的基础上，所述恒压源包括电压源和稳压管，电压源连接运算放大器的同相输入端，稳压管的阴极连接电源，阳极接地。Device scheme 4: On the basis of device scheme 3, the constant voltage source includes a voltage source and a voltage regulator tube, the voltage source is connected to the non-inverting input terminal of the operational amplifier, the cathode of the voltage regulator tube is connected to the power supply, and the anode is grounded.
采用稳压管，能够保证运算放大器同相输入端输入电压的稳定，保证恒流源输出电流的稳定。The voltage regulator tube is used to ensure the stability of the input voltage at the non-inverting input terminal of the operational amplifier and the stability of the output current of the constant current source.
装置方案5：在装置方案1的基础上，每个电压检测电路均设有四个运算放大器，其中第一运算放大器和第二运算放大器的同相输入端分别连接对应热敏电阻的两端，第一运算放大器和第二运算放大器的输出端连接；第一运算放大器的反相输入端连接第一运算放大器的输出端，第二运算放大器的反相输出端连接第二放大器的输出端；第一运算放大器的输出端连接第三运算放大器的反相输入端，第二运算放大器的输出端连接第三运算放大器的正向输入端，第三运算放大器的输出端连接第三运行放大器的反相输入端；第三运算放大器的输出端连接第四运算放大器的正向输入端，第四运算放大器的输出端连接第四运算放大器的反相输入端；第四运算放大器的输出端连接所述处理器。Device scheme 5: On the basis of device scheme 1, each voltage detection circuit is equipped with four operational amplifiers, wherein the non-inverting input terminals of the first operational amplifier and the second operational amplifier are respectively connected to the two ends of the corresponding thermistor, and the second An operational amplifier is connected to the output terminal of the second operational amplifier; the inverting input terminal of the first operational amplifier is connected to the output terminal of the first operational amplifier, and the inverting output terminal of the second operational amplifier is connected to the output terminal of the second amplifier; the first The output terminal of the operational amplifier is connected to the inverting input terminal of the third operational amplifier, the output terminal of the second operational amplifier is connected to the positive input terminal of the third operational amplifier, and the output terminal of the third operational amplifier is connected to the inverting input terminal of the third operational amplifier end; the output end of the third operational amplifier is connected to the positive input end of the fourth operational amplifier, and the output end of the fourth operational amplifier is connected to the inverting input end of the fourth operational amplifier; the output end of the fourth operational amplifier is connected to the processor .
装置方案6：在装置方案5的基础上，所述热敏电阻为两线制热敏电阻，三线制热敏电阻或四线制热敏电阻。Device scheme 6: On the basis of device scheme 5, the thermistor is a two-wire thermistor, a three-wire thermistor or a four-wire thermistor.
热敏电阻可以为单个热敏电阻两线制、两个热敏电阻串联引出三根线、两个分离的热敏电阻。由于电路设计的是两路采样，两路采样的有一处公共端，因此，可以只有单个热敏电阻时可以两路共同采样该电阻；两个热敏电阻串联引出三根线，可以将电阻公共端接采样公共端，两路采样分别采不同的热敏电阻；两个分离的热敏电阻可以将电阻连接成串联形式采样。The thermistor can be a single thermistor with two wires, two thermistors connected in series with three wires, or two separate thermistors. Since the circuit design is two-way sampling, there is a common terminal for the two-way sampling, so when there is only a single thermistor, the resistance can be sampled by two ways; two thermistors are connected in series to lead three wires, and the common end of the resistance can be connected Connect to the sampling common terminal, and the two channels of sampling adopt different thermistors; two separate thermistors can be connected in series to sample.
装置方案7：在装置方案1的基础上，所述处理器设有CAN通讯接口和/或RS485通讯接口。Device solution 7: On the basis of device solution 1, the processor is provided with CAN communication interface and/or RS485 communication interface.
装置方案8：在装置方案1的基础上，所述热敏电阻为铂热敏电阻PT1000或铂热敏电阻PT100。Device solution 8: On the basis of device solution 1, the thermistor is a platinum thermistor PT1000 or a platinum thermistor PT100.
充电枪方案1：一种设有温度检测装置的充电枪，包括充电枪本体，还包括温度检测装置；Charging gun scheme 1: a charging gun equipped with a temperature detection device, including the charging gun body and a temperature detection device;
所述温度检测装置包括处理器，电源和至少两个热敏电阻，各热敏电阻与电源连接，形成回路；The temperature detection device includes a processor, a power supply and at least two thermistors, each thermistor is connected to the power supply to form a loop;
各热敏电阻的两端均连接有相应的电压检测电路，电压检测电路用于检测相应热敏电阻两端的电压；所述处理器采集连接各电压检测电路。Both ends of each thermistor are connected with a corresponding voltage detection circuit, and the voltage detection circuit is used to detect the voltage at both ends of the corresponding thermistor; the processor collects and connects each voltage detection circuit.
充电枪方案2：在充电枪方案1的基础上，所述电源为恒流源，各热敏电阻串联后连接在恒流源的两侧。Charging gun solution 2: On the basis of charging gun solution 1, the power supply is a constant current source, and each thermistor is connected in series to both sides of the constant current source.
充电枪方案3：在充电枪方案2的基础上，所述恒流源包括恒压源和运算放大器，恒压源连接运算放大器的同相输入端，运算放大器的输出端为恒流源的正极，运算放大器的反相输入端为恒流源的负极。Charging gun scheme 3: On the basis of charging gun scheme 2, the constant current source includes a constant voltage source and an operational amplifier, the constant voltage source is connected to the non-inverting input terminal of the operational amplifier, and the output terminal of the operational amplifier is the positive pole of the constant current source. The inverting input of the operational amplifier is the negative pole of the constant current source.
充电枪方案4：在充电枪方案3的基础上，所述恒压源包括电压源和稳压管，电压源连接运算放大器的同相输入端，稳压管的阴极连接电源，阳极接地。Charging gun solution 4: On the basis of charging gun solution 3, the constant voltage source includes a voltage source and a voltage regulator tube, the voltage source is connected to the non-inverting input terminal of the operational amplifier, the cathode of the voltage regulator tube is connected to the power supply, and the anode is grounded.
充电枪方案5：在充电枪方案1的基础上，每个电压检测电路均设有四个运算放大器，其中第一运算放大器和第二运算放大器的同相输入端分别连接对应热敏电阻的两端，第一运算放大器和第二运算放大器的输出端连接；第一运算放大器的反相输入端连接第一运算放大器的输出端，第二运算放大器的反相输出端连接第二放大器的输出端；第一运算放大器的输出端连接第三运算放大器的反相输入端，第二运算放大器的输出端连接第三运算放大器的正向输入端，第三运算放大器的输出端连接第三运行放大器的反相输入端；第三运算放大器的输出端连接第四运算放大器的正向输入端，第四运算放大器的输出端连接第四运算放大器的反相输入端；第四运算放大器的输出端连接所述处理器。Charging gun scheme 5: On the basis of charging gun scheme 1, each voltage detection circuit is equipped with four operational amplifiers, in which the non-inverting input terminals of the first operational amplifier and the second operational amplifier are respectively connected to the two ends of the corresponding thermistor , the output terminals of the first operational amplifier and the second operational amplifier are connected; the inverting input terminal of the first operational amplifier is connected with the output terminal of the first operational amplifier, and the inverting output terminal of the second operational amplifier is connected with the output terminal of the second amplifier; The output terminal of the first operational amplifier is connected to the inverting input terminal of the third operational amplifier, the output terminal of the second operational amplifier is connected to the positive input terminal of the third operational amplifier, and the output terminal of the third operational amplifier is connected to the inverting input terminal of the third operational amplifier. phase input; the output of the third operational amplifier is connected to the positive input of the fourth operational amplifier, and the output of the fourth operational amplifier is connected to the inverting input of the fourth operational amplifier; the output of the fourth operational amplifier is connected to the processor.
充电枪方案6：在充电枪方案5的基础上，所述热敏电阻为两线制热敏电阻，三线制热敏电阻或四线制热敏电阻。Charging gun scheme 6: On the basis of charging gun scheme 5, the thermistor is a two-wire thermistor, a three-wire thermistor or a four-wire thermistor.
充电枪方案7：在充电枪方案1的基础上，所述处理器设有CAN通讯接口和/或RS485通讯接口。Charging gun solution 7: On the basis of charging gun solution 1, the processor is provided with CAN communication interface and/or RS485 communication interface.
充电枪方案8：在充电枪方案1的基础上，所述热敏电阻为铂热敏电阻PT1000或铂热敏电阻PT100。Charging gun solution 8: On the basis of charging gun solution 1, the thermistor is a platinum thermistor PT1000 or a platinum thermistor PT100.
插座方案1：一种设有温度检测装置的插座，包括插座本体，还包括温度检测装置；Socket solution 1: a socket with a temperature detection device, including the socket body and a temperature detection device;
所述温度检测装置包括处理器，电源和至少两个热敏电阻，各热敏电阻与电源连接，形成回路；The temperature detection device includes a processor, a power supply and at least two thermistors, each thermistor is connected to the power supply to form a loop;
各热敏电阻的两端均连接有相应的电压检测电路，电压检测电路用于检测相应热敏电阻两端的电压；所述处理器采集连接各电压检测电路。Both ends of each thermistor are connected with a corresponding voltage detection circuit, and the voltage detection circuit is used to detect the voltage at both ends of the corresponding thermistor; the processor collects and connects each voltage detection circuit.
插座方案2：在插座方案1的基础上，所述电源为恒流源，各热敏电阻串联后连接在恒流源的两侧。Socket solution 2: On the basis of socket solution 1, the power supply is a constant current source, and each thermistor is connected in series to both sides of the constant current source.
插座方案3：在插座方案2的基础上，所述恒流源包括恒压源和运算放大器，恒压源连接运算放大器的同相输入端，运算放大器的输出端为恒流源的正极，运算放大器的反相输入端为恒流源的负极。Socket scheme 3: On the basis of socket scheme 2, the constant current source includes a constant voltage source and an operational amplifier. The inverting input terminal of is the negative pole of the constant current source.
插座方案4：在插座方案3的基础上，所述恒压源包括电压源和稳压管，电压源连接运算放大器的同相输入端，稳压管的阴极连接电源，阳极接地。Socket scheme 4: On the basis of socket scheme 3, the constant voltage source includes a voltage source and a voltage regulator tube, the voltage source is connected to the non-inverting input terminal of the operational amplifier, the cathode of the voltage regulator tube is connected to the power supply, and the anode is grounded.
插座方案5：在插座方案1的基础上，每个电压检测电路均设有四个运算放大器，其中第一运算放大器和第二运算放大器的同相输入端分别连接对应热敏电阻的两端，第一运算放大器和第二运算放大器的输出端连接；第一运算放大器的反相输入端连接第一运算放大器的输出端，第二运算放大器的反相输出端连接第二放大器的输出端；第一运算放大器的输出端连接第三运算放大器的反相输入端，第二运算放大器的输出端连接第三运算放大器的正向输入端，第三运算放大器的输出端连接第三运行放大器的反相输入端；第三运算放大器的输出端连接第四运算放大器的正向输入端，第四运算放大器的输出端连接第四运算放大器的反相输入端；第四运算放大器的输出端连接所述处理器。Socket scheme 5: On the basis of socket scheme 1, each voltage detection circuit is equipped with four operational amplifiers, wherein the non-inverting input terminals of the first operational amplifier and the second operational amplifier are respectively connected to the two ends of the corresponding thermistor, and the second An operational amplifier is connected to the output terminal of the second operational amplifier; the inverting input terminal of the first operational amplifier is connected to the output terminal of the first operational amplifier, and the inverting output terminal of the second operational amplifier is connected to the output terminal of the second amplifier; the first The output terminal of the operational amplifier is connected to the inverting input terminal of the third operational amplifier, the output terminal of the second operational amplifier is connected to the positive input terminal of the third operational amplifier, and the output terminal of the third operational amplifier is connected to the inverting input terminal of the third operational amplifier end; the output end of the third operational amplifier is connected to the positive input end of the fourth operational amplifier, and the output end of the fourth operational amplifier is connected to the inverting input end of the fourth operational amplifier; the output end of the fourth operational amplifier is connected to the processor .
插座方案6：在插座方案5的基础上，所述热敏电阻为两线制热敏电阻，三线制热敏电阻或四线制热敏电阻。Socket scheme 6: On the basis of socket scheme 5, the thermistor is a two-wire thermistor, a three-wire thermistor or a four-wire thermistor.
插座方案7：在插座方案1的基础上，所述处理器设有CAN通讯接口和/或RS485通讯接口。Socket solution 7: On the basis of socket solution 1, the processor is provided with CAN communication interface and/or RS485 communication interface.
插座方案8：在插座方案1的基础上，所述热敏电阻为铂热敏电阻PT1000或铂热敏电阻PT100。Socket scheme 8: On the basis of socket scheme 1, the thermistor is a platinum thermistor PT1000 or a platinum thermistor PT100.
附图说明Description of drawings
图1为充电枪实施例中温度检测装置的结构原理图；Fig. 1 is a structural schematic diagram of a temperature detection device in an embodiment of a charging gun;
图2为充电枪实施例中恒流源的结构示意图；Fig. 2 is a schematic structural diagram of a constant current source in an embodiment of a charging gun;
图3为充电枪实施例中电压检测装置的电路图。Fig. 3 is a circuit diagram of the voltage detection device in the embodiment of the charging gun.
具体实施方式Detailed ways
一种温度检测装置，包括处理器，电源和至少两个热敏电阻，各热敏电阻与电源连接，形成回路；A temperature detection device, including a processor, a power supply and at least two thermistors, each thermistor is connected to the power supply to form a loop;
各热敏电阻的两端均连接有相应的电压检测电路，电压检测电路用于检测相应热敏电阻两端的电压；所述处理器采集连接各电压检测电路。Both ends of each thermistor are connected with a corresponding voltage detection circuit, and the voltage detection circuit is used to detect the voltage at both ends of the corresponding thermistor; the processor collects and connects each voltage detection circuit.
下面结合具体实施例对本实用新型的技术方案作进一步说明。The technical solution of the present utility model will be further described below in conjunction with specific embodiments.
充电枪实施例：Charging gun embodiment:
本实施例提供一种设有温度检测装置的充电枪，包括充电枪本体和温度检测装置，温度检测装置用于在充电枪工作时对充电枪的温度进行检测。This embodiment provides a charging gun equipped with a temperature detection device, including a charging gun body and a temperature detection device. The temperature detection device is used to detect the temperature of the charging gun when the charging gun is working.
温度检测装置的结构原理如图1所示，包括恒流源，第一热敏电阻，第二热敏电阻，第一电压检测电路，第二电压检测电路，处理器以及与处理器连接的通讯模块。恒流源连接第一热敏电阻和第二热敏电阻，用于为热敏电阻供电；处理器采集连接第一电压检测电路和第二电压检测电路，第一电压检测电路检测连接第一热敏电阻，用于检测第一热敏电阻两端的电压；第二电压检测电路检测连接第二热敏电阻，用于检测第二热敏电阻两端的电压。通讯模块为CAN通讯模块或RS485通讯模块，也可以即CAN通讯模块又包括RS485通讯模块。The structural principle of the temperature detection device is shown in Figure 1, including a constant current source, a first thermistor, a second thermistor, a first voltage detection circuit, a second voltage detection circuit, a processor and a communication device connected to the processor module. The constant current source is connected to the first thermistor and the second thermistor to supply power to the thermistor; the processor collects and connects the first voltage detection circuit and the second voltage detection circuit, and the first voltage detection circuit detects and connects the first thermal The sensitive resistor is used to detect the voltage at both ends of the first thermistor; the second voltage detection circuit is connected to the second thermistor and used to detect the voltage at both ends of the second thermistor. The communication module is a CAN communication module or an RS485 communication module, or both the CAN communication module and the RS485 communication module.
恒流源如图2所示，是基于运算放大器U0的恒流源，该恒流源包括稳压管D2和运算放大器U0，稳压管D2的阴极连接运算放大器U0的同相输入端，将运算放大器U0同相输入端的电压稳定在2.5V，第一热敏电阻和第二热敏电阻串联后连接在运算放大器U0的输出端与反相放大端之间。As shown in Figure 2, the constant current source is based on the operational amplifier U0. The constant current source includes a voltage regulator tube D2 and an operational amplifier U0. The cathode of the voltage regulator tube D2 is connected to the non-inverting input terminal of the operational amplifier U0. The voltage of the non-inverting input terminal of the amplifier U0 is stable at 2.5V, and the first thermistor and the second thermistor are connected in series between the output terminal of the operational amplifier U0 and the inverting amplifying terminal.
第一电压检测电路连接第一热敏电阻，检测第一热敏电阻两端的电压，并对采集到的电压值进行放大后传输给处理器；第二电压检测电路连接第二热敏电阻，检测第二热敏电阻两端的电压，并对采集到的电压值进行放大后传输给处理器。第一电压检测电路与第二电压检测电路的结构完全相同，均如图3所示，包括运算放大器U1，运算放大器U2，运算放大器U3，运算放大器U4和若干各电阻连接而成。运算放大器U1的同相输入端和运算放大器U2的反相输入端分别连接相应热敏电阻的两端，运算放大器U1的输出端与运算放大器U2的输出端连接，在运算放大器U1连接运算放大器U2的线路上串联设置有电阻R1、R2和R3，运算放大器U1的反相输入端连接电阻R1与电阻R2之间的连接点，运算放大器U2的反相输入端连接电阻R2与电阻R3之间的连接点。运算放大器U2的输出端还连接分压电路，分压电路包括串设的电阻R4和电阻R5，分压电路的一端连接运算放大器U2的输出端，另一端接地。运算放大器U3同相输入端连接电阻R4和电阻R5之间的连接点，反相输入端连接运算放大器U1的输出端，运算放大器U3的输出端连接运算放大器U4的同相输入端。运算放大器U3的输出端连接运算放大器U3的反相输入端，运算放大器U4的输入端连接运算放大器U4的反相输入端。The first voltage detection circuit is connected to the first thermistor, detects the voltage at both ends of the first thermistor, and transmits the collected voltage value to the processor after amplifying; the second voltage detection circuit is connected to the second thermistor, detects The voltage at both ends of the second thermistor is amplified and transmitted to the processor after the collected voltage value is amplified. The structure of the first voltage detection circuit and the second voltage detection circuit is exactly the same, as shown in FIG. 3 , including an operational amplifier U1, an operational amplifier U2, an operational amplifier U3, an operational amplifier U4 and a plurality of resistors. The non-inverting input terminal of the operational amplifier U1 and the inverting input terminal of the operational amplifier U2 are respectively connected to the two ends of the corresponding thermistor, the output terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U2, and the terminal of the operational amplifier U2 is connected to the operational amplifier U1. Resistors R1, R2 and R3 are set in series on the line, the inverting input terminal of the operational amplifier U1 is connected to the connection point between the resistor R1 and the resistor R2, and the inverting input terminal of the operational amplifier U2 is connected to the connection point between the resistor R2 and the resistor R3 point. The output end of the operational amplifier U2 is also connected to a voltage divider circuit. The voltage divider circuit includes resistors R4 and R5 arranged in series. One end of the voltage divider circuit is connected to the output end of the operational amplifier U2, and the other end is grounded. The non-inverting input terminal of the operational amplifier U3 is connected to the connection point between the resistors R4 and R5, the inverting input terminal is connected to the output terminal of the operational amplifier U1, and the output terminal of the operational amplifier U3 is connected to the non-inverting input terminal of the operational amplifier U4. The output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U3, and the input terminal of the operational amplifier U4 is connected to the inverting input terminal of the operational amplifier U4.
处理器采集连接运算放大器U4的输出端，根据从运算放大器U4输出端采集到的数据得到相应热敏电阻两端的电压，并根据热敏电阻两端的电压值判断该热敏电阻在充电枪内所设置位置的温度值，实现对充电枪的温度检测。The processor collects and connects the output terminal of the operational amplifier U4, obtains the voltage at both ends of the corresponding thermistor according to the data collected from the output terminal of the operational amplifier U4, and judges the thermistor in the charging gun according to the voltage value at both ends of the thermistor. Set the temperature value of the position to realize the temperature detection of the charging gun.
本实施例中，电源采用的是基于运算放大器的恒流源；作为其他实施方式，可以不采用恒流源，只需设置电流传感器，实时检测第一热敏电阻和第二热敏电阻的电流即可。In this embodiment, the power supply uses a constant current source based on an operational amplifier; as other implementations, a constant current source may not be used, and only a current sensor is required to detect the currents of the first thermistor and the second thermistor in real time That's it.
本实施例中，第一热敏电阻和第二热敏电阻均为铂热敏电阻PT1000；作为其他实时方式，第一热敏电阻和第二热敏电阻可以采用其他形式的热敏电阻，如采用铂热敏电阻PT100等。In this embodiment, both the first thermistor and the second thermistor are platinum thermistors PT1000; as other real-time modes, the first thermistor and the second thermistor can adopt other forms of thermistors, such as Using platinum thermistor PT100 and so on.
最为其他实时方式，通讯模块还可以设置其他形式的通讯装置，如串口通讯装置等。As for other real-time methods, the communication module can also be equipped with other forms of communication devices, such as serial port communication devices.
充电插座实施例：Examples of charging sockets:
本实施例提供一种充电插座，其中设有温度检测装置，用于检测充电过程中充电枪的温度。本实施例中的温度检测装置与上述充电枪实施例中的温度检测装置相同，充电枪实施例中已经做了详细介绍，本实施例中不做具体说明。This embodiment provides a charging socket, which is provided with a temperature detection device for detecting the temperature of the charging gun during the charging process. The temperature detection device in this embodiment is the same as the temperature detection device in the charging gun embodiment above, which has been introduced in detail in the charging gun embodiment, and will not be described in detail in this embodiment.
温度检测装置实施例：Embodiment of temperature detection device:
本实施例提供一种温度检测装置，与上述充电枪实施例和充电插座实施例中的温度检测装置相同，在上述充电枪实施例中已经做了详细介绍，本实施例中不做具体说明。This embodiment provides a temperature detection device, which is the same as the temperature detection devices in the charging gun embodiment and the charging socket embodiment above, which have been introduced in detail in the above charging gun embodiment, and will not be described in detail in this embodiment.
Claims (24)
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| CN201820072135.2U CN208043276U (en) | 2018-01-16 | 2018-01-16 | Temperature-detecting device and charging gun, charging socket equipped with the temperature-detecting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765431A (en) * | 2019-01-08 | 2019-05-17 | 科华恒盛股份有限公司 | Resistance measuring circuit, temperature sensing circuit and charging gun |
| CN110940881A (en) * | 2019-12-10 | 2020-03-31 | 许昌开普检测研究院股份有限公司 | Charging temperature rise test system |
| CN114112096A (en) * | 2021-11-11 | 2022-03-01 | 福建星云电子股份有限公司 | A high-precision temperature acquisition device and method for a charging gun |
| US12152947B2 (en) | 2021-06-04 | 2024-11-26 | Delta Electronics, Inc. | Temperature detection device |
-
2018
- 2018-01-16 CN CN201820072135.2U patent/CN208043276U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765431A (en) * | 2019-01-08 | 2019-05-17 | 科华恒盛股份有限公司 | Resistance measuring circuit, temperature sensing circuit and charging gun |
| CN110940881A (en) * | 2019-12-10 | 2020-03-31 | 许昌开普检测研究院股份有限公司 | Charging temperature rise test system |
| US12152947B2 (en) | 2021-06-04 | 2024-11-26 | Delta Electronics, Inc. | Temperature detection device |
| CN114112096A (en) * | 2021-11-11 | 2022-03-01 | 福建星云电子股份有限公司 | A high-precision temperature acquisition device and method for a charging gun |
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