正负极性转换电路及机器人

Abstract

本申请实施例涉及机器人技术领域，公开了一种正负极性转换电路，包括：整流模块和开关控制模块；整流模块(10)的输入端被配置为连接外部电源(300)，整流模块(10)的输出端连接开关控制模块(20)；开关控制模块(20)被配置为分别连接外部电源(300)和后级电路(400)；开关控制模块(20)被配置为根据外部电源(300)的正负极连接对输入后级电路(400)的电源极性进行转换，为后级电路(400)供电。上述方案使得机器人能够在外部电源的正负极反接的情况下，通过开关控制模块对输入后级电路的电源极性进行转换，使得机器人能够对外部电源的接入进行自适应，确保对后级电路进行正确供电，提高了机器人的适用性。

Claims

1. A positive-negative polarity conversion circuit, characterized by comprising: include: Rectifier module and switch control module; The input terminal of the rectifier module (10) is configured to be connected to an external power supply (300), and the output terminal of the rectifier module (10) is connected to the switch control module (20). The switch control module (20) is configured to connect to the external power supply (300) and the subsequent circuit (400) respectively. The switch control module (20) is configured to switch the power polarity of the input to the subsequent circuit (400) according to the positive and negative connection of the external power supply (300) to supply power to the subsequent circuit (400); The switch control module (20) includes a first switch control circuit (21) and a second switch control circuit (22); The first end of the first switch control circuit (21) is configured to connect to the first electrode of the external power supply (300), the second end of the first switch control circuit (21) is configured to connect to the second electrode of the external power supply (300), and the third end of the first switch control circuit (21) is connected to the first end of the second switch control circuit (22). The first switch control circuit (21) includes a field-effect transistor (124) and a control circuit (125); The first terminal of the control circuit (125) is configured to be connected to the first electrode of the external power supply (300), the second terminal of the control circuit (125) is connected to the source of the field-effect transistor (124), the third terminal of the control circuit (125) is connected to the gate of the field-effect transistor (124), the fourth terminal of the control circuit (125) is configured to be connected to the second electrode of the external power supply (300), and the drain of the field-effect transistor (124) is connected to the first terminal of the first switch (123). The second switch control circuit (22) includes a first switch (123), which is a double-pole double-throw relay; The first end of the first switch (123) is connected to the third end of the first switch control circuit (21), the second end of the first switch (123) is configured to connect to the second electrode of the external power supply (300), the third end of the first switch (123) is configured to connect to the negative terminal of the subsequent circuit (400), the fourth end of the first switch (123) is configured to connect to the positive terminal of the subsequent circuit (400), the fifth end of the first switch (123) is configured to connect to the second electrode of the external power supply (300), the sixth end of the first switch (123) is configured to connect to the first electrode of the external power supply (300), the seventh end of the first switch (123) is connected to the first end of the rectifier module (10), and the eighth end of the first switch (123) is configured to connect to the second electrode of the external power supply (300).

2. The positive-negative polarity conversion circuit according to claim 1, characterized by, The second end of the rectifier module (10) is configured to connect to the second electrode of the external power supply (300), and the third end of the rectifier module (10) is configured to connect to the first electrode of the external power supply (300).

3. The positive-negative polarity conversion circuit according to claim 1, characterized by, The control circuit (125) includes a conduction control circuit (1126) and a first resistor (1127). The first terminal of the conduction control circuit (1126) is configured to connect to the first electrode of the external power supply (300), the second terminal of the conduction control circuit (1126) is connected to the source of the field-effect transistor (124), and the third terminal of the conduction control circuit (1126) is connected to the gate of the field-effect transistor (124) and the first terminal of the first resistor (1127), respectively. The second end of the first resistor (1127) is configured to be connected to the second electrode of the external power supply (300).

4. The positive-negative polarity conversion circuit according to claim 3, characterized by The conduction control circuit (1126) includes a first capacitor (1126(a)) and a second resistor (1126(b)). The first terminal of the first capacitor (1126(a)) is configured to be connected to the first electrode of the external power supply (300), the first terminal of the first capacitor (1126(a)) is connected to the first terminal of the second resistor (1126(b)), and the second terminal of the first capacitor (1126(a)) is connected to the second terminal of the second resistor (1126(b)). The first end of the second resistor (1126(b)) is connected to the source of the field-effect transistor (124), and the second end of the second resistor (1126(b)) is connected to the gate of the field-effect transistor (124) and the first end of the first resistor (1127), respectively.

5. The positive-negative polarity conversion circuit according to claim 1, characterized by, The rectifier module (10) includes a first diode (11) and a second diode (12); The first end of the first diode (11) is configured to connect to the first electrode of the external power supply (300), and the second end of the first diode (11) is connected to the first end of the second diode (12) and the seventh end of the first switch (123), respectively. The second end of the second diode (12) is configured to be connected to the second electrode of the external power supply (300).

6. A robot, characterized in that Includes the positive / negative polarity conversion circuit as described in any one of claims 1-5.

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