Control device compatible with multi-standard charging interface

Abstract

A control device compatible with multi-standard charging interfaces comprises a gun in-place detection module, a protocol conversion module and a main control module. The gun in-place detection module is used for judging the connection state of the charging gun, generating a detection signal and transmitting the detection signal to the protocol conversion module; the protocol conversion module comprises a plurality of protocol activation subunits, each protocol activation subunit comprises a self-locking button, a filter capacitor, a pull-down resistor and a protocol signal output end, and the filter capacitor and the pull-down resistor are connected with the self-locking button and the protocol signal output end after being connected in parallel. The self-locking button corresponding to the detection signal is closed to enable the protocol signal output end to output a protocol control signal; the main control module is used for controlling the charging interface to discharge according to the protocol control signal; the utility model is beneficial to standardization of production.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current charging of electric vehicles, in particular to a control device compatible with multi-standard charging interfaces. Background Art

[0002] As new energy vehicle technology matures and becomes increasingly popular worldwide, new energy vehicles are rapidly gaining popularity. Due to differences in new energy vehicle manufacturers, different new energy vehicle charging standards are used when charging new energy vehicles. Currently, new energy vehicle charging standards worldwide are mainly divided into national standards, American standards, European standards, and Japanese standards.

[0003] In order to meet market demand, charging devices with different interfaces have also been rapidly developed. However, different charging interface standards have different communication protocols and input and output interfaces, requiring charging devices to be equipped with different protocol conversion devices. As a result, charging devices with different interfaces have different structural layouts, which is not conducive to production standardization. Utility Model Content

[0004] In order to solve the problem in the prior art that charging devices with different interfaces have different structural layouts, which is not conducive to production standardization, the utility model provides a control device compatible with multiple standard charging interfaces, which is conducive to production standardization.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a control device compatible with multiple standard charging interfaces, including a gun presence detection module, a protocol conversion module and a main control module;

[0006] The gun presence detection module is used to determine the connection status of the charging gun and generate a detection signal to be transmitted to the protocol conversion module;

[0007] The protocol conversion module includes a plurality of protocol activation subunits, each of which includes a self-locking button, a filter capacitor, a pull-down resistor, and a protocol signal output terminal. The filter capacitor and the pull-down resistor are connected in parallel to the self-locking button and the protocol signal output terminal. When the protocol conversion module receives a detection signal, the self-locking button corresponding to the detection signal is closed, causing the protocol signal output terminal to output a protocol control signal.

[0008] The main control module is used to control the discharge of the charging interface according to the protocol control signal.

[0009] As a further optimization of a utility model of a control device compatible with multiple standard charging interfaces: the control device includes two groups of communication interfaces connected to the main control module, and the communication interfaces include American standard sub-interface, European standard sub-interface, national standard sub-interface and Japanese standard sub-interface.

[0010] As a further optimization of a control device compatible with a multi-standard charging interface of the utility model: the American standard sub-interface includes a first temperature detection interface, a first CP interface and a PP interface;

[0011] The European standard sub-interface includes a second temperature detection interface and a second CP interface;

[0012] The national standard sub-interface includes a third temperature detection interface, a first electromagnetic lock interface, a first CAN communication interface and an auxiliary power supply interface;

[0013] The Japanese standard sub-interface includes a second electromagnetic lock interface and a second CAN communication interface.

[0014] As a further optimization of a control device compatible with a multi-standard charging interface in a utility model: the self-locking button is set to an American standard button, a European standard button, a national standard button or a Japanese standard button, the American standard button corresponds to the American standard sub-interface, the European standard button corresponds to the European standard sub-interface, the national standard button corresponds to the national standard sub-interface, and the Japanese standard button corresponds to the Japanese standard sub-interface.

[0015] As a further optimization of a control device compatible with multiple standard charging interfaces in a utility model: the gun presence detection module includes a filter capacitor, a chip resistor R, a reference voltage source U57, a transistor coupler U55 and a pull-up resistor R290.

[0016] As a further optimization of a control device compatible with a multi-standard charging interface in a utility model: the control device includes a temperature detection unit connected to the main control module, and the temperature detection unit includes an operational amplifier U1, a bidirectional transient voltage suppression diode D1, a bidirectional transient voltage suppression diode D2, a differential mode inductor L1, a differential mode inductor L2, a differential mode inductor L3, a differential mode inductor L4 and a temperature detection filter capacitor.

[0017] As a further optimization of a control device compatible with multiple standard charging interfaces in the utility model: the control device includes a gun lock control unit connected to the main control module, and the gun lock control unit includes a relay RLY1, an electrolytic capacitor EC1 and an electromagnetic lock.

[0018] As a further optimization of a control device compatible with multiple standard charging interfaces in a utility model: the control device includes a communication protocol interface, an ambient temperature detection interface and a protocol control signal output interface, and the communication protocol interface, the ambient temperature detection interface and the protocol control signal output interface are all connected to the main control module.

[0019] As a further optimization of a control device compatible with a multi-standard charging interface in a utility model: the communication protocol interface includes a CAN communication protocol sub-interface, a power carrier communication protocol sub-interface, an RS232 communication protocol sub-interface, an RS485 communication protocol sub-interface and an Ethernet sub-interface.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The gun in-place detection module of the present utility model is used to judge the connection status of the charging gun and generate a detection signal to be transmitted to the protocol conversion module. The protocol conversion module includes multiple protocol activation subunits. The protocol activation subunit includes a self-locking button, a filter capacitor, a pull-down resistor and a protocol signal output end. The filter capacitor and the pull-down resistor are connected in parallel with the self-locking button and the protocol signal output end. When the protocol conversion module receives the detection signal, the self-locking button corresponding to the detection signal is closed to enable the protocol signal output end to output a protocol control signal. The main control module is used to control the discharge of the charging interface according to the protocol control signal. The utility model improves the standardization of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the communication interface of the present utility model;

[0023] Figure 2 This is a gun temperature detection circuit of the utility model;

[0024] Figure 3 This is a gun-in-position detection circuit of the utility model;

[0025] Figure 4 This is a gun lock control circuit of the utility model;

[0026] Figure 5 This is the protocol identification conversion process of the utility model;

[0027] Figure 6 It is the protocol identification conversion module circuit of the utility model;

[0028] Markings in the figure: 101, American standard button, 102, European standard button, 103, Chinese standard button, 104, Japanese standard button. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further elaborated in detail below in conjunction with specific embodiments. Parts not described and disclosed in detail in the following embodiments of the present invention should be understood as existing technologies known or should be known to those skilled in the art.

[0030] A control device compatible with multiple standard charging interfaces, such as Figures 1-6As shown, it includes a gun presence detection module, a protocol conversion module and a main control module. The gun presence detection module is used to determine the connection status of the charging gun and generate a detection signal to be transmitted to the protocol conversion module. The gun presence detection module includes a filter capacitor, a chip resistor R, a reference voltage source U57, a transistor pull-up coupler U55 and a pull-up resistor R290. The detection circuit voltage is 12V before the gun is inserted, and the detection circuit voltage is 6V after the gun is inserted. The main control chip in the charger confirms that the gun is in place. The filter capacitor, the chip resistor R, the reference voltage source U57, the transistor pull-up coupler U55 and the pull-up resistor R290 are all conventional existing technologies in this field and will not be described in detail here. The detection circuit voltage is 12V before the gun is inserted, and the detection circuit voltage is 6V after the gun is inserted. The main control chip confirms that the gun is in place. When different charging interfaces are connected, the resistance of the gun presence circuit changes, and the voltage at the circuit detection point changes, thereby identifying different charging interfaces.

[0031] The protocol conversion module includes multiple protocol activation subunits, and the protocol activation subunits are implanted with embedded programs. The embedded programs are conventional existing technologies in this field and will not be described in detail here. The protocol activation subunits include a self-locking button, a filter capacitor, a pull-down resistor and a protocol signal output terminal. The filter capacitor and the pull-down resistor are connected in parallel to the self-locking button and the protocol signal output terminal. When the protocol conversion module receives a detection signal, the self-locking button corresponding to the detection signal is closed so that the protocol signal output terminal outputs a protocol control signal, activating the corresponding communication protocol. The protocol conversion module automatically switches between different charging protocols and communicates with the vehicle for charging. Specifically, when the detection level is low for a long time and the self-locking button is closed, the detection level is high and the communication protocol is activated. When more than one self-locking button is closed at the same time, the system detects multiple high levels and will determine it as a protocol failure to avoid a safety risk caused by an output interface being connected to multiple gun lines at the same time. The main control module is used to control the discharge of the charging interface according to the protocol control signal. In the figure, the self-locking buttons are represented by SW1, SW2, SW3 and SW4, the filter capacitors are represented by C1, C2, C3 and C4, the pull-down resistors are represented by R1, R2, R3 and R4, and the protocol signal output terminals are represented by Protocol1, Protocol2, Protocol3 and Protocol4.

[0032] The main control module can simultaneously connect to two charging cables of different standards, allowing for simultaneous dual-charger charging. This reduces the number of protocol activation subunits and reduces equipment costs. The control device includes two communication interfaces connected to the main control module. These interfaces include American, European, Chinese, and Japanese standard sub-interfaces. The American standard sub-interface is designated CCS1, the European standard sub-interface is CCS2, the Chinese standard sub-interface is designated GBT, and the Japanese standard sub-interface is designated CHAdeMo. The American standard sub-interface is a 6-core circular quick-connect interface, including a first temperature detection interface, a first CP interface, and a PP interface. The first CP interface is used for control guidance, and the PP interface is used for charging connection confirmation. The European standard sub-interface is a 5-core circular quick-connect interface, including a second temperature detection interface and a second CP interface. The second CP interface is used for control guidance. The Chinese standard sub-interface is a 13-core circular quick-connect interface, including a third temperature detection interface, a first electromagnetic lock interface, a first CAN communication interface, and an auxiliary power interface. The Chinese standard sub-interface also includes a gun position interface. The Japanese standard sub-interface is a 9-core circular quick-connect interface, including a second electromagnetic lock interface, a second CAN communication interface, and a gun position interface. These different standard communication interfaces are used to adapt to wiring with different interface standards.

[0033] The self-locking button can be set to the American standard button 101, the European standard button 102, the national standard button 103 or the Japanese standard button 104. The American standard button 101 corresponds to the American standard sub-interface, the European standard button 102 corresponds to the European standard sub-interface, the national standard button 103 corresponds to the national standard sub-interface, and the Japanese standard button 104 corresponds to the Japanese standard sub-interface. For example, when the national standard sub-interface is connected, the voltage of the detection circuit changes from 12V to 6V, the main control module recognizes the national standard sub-interface, and at the same time closes the national standard button 103, the detection level of the protocol conversion module is high, and the GBT communication protocol is activated; at the same time, the user can select different external communication interfaces according to their own needs, user internal communication, software upgrades and log acquisition, through the above connection and selection and the operation of the internal software, can achieve fast access, fast replacement, and standardized functions.

[0034] The control device includes a temperature detection unit connected to the main control module, and the temperature detection unit includes an op amp U1, a bidirectional transient voltage suppression diode D1, a bidirectional transient voltage suppression diode D2, a differential mode inductor L1, a differential mode inductor L2, a differential mode inductor L3, a differential mode inductor L4, and a temperature detection filter capacitor. The op amp U1, the bidirectional transient voltage suppression diode D1, the bidirectional transient voltage suppression diode D2, the differential mode inductor L1, the differential mode inductor L2, the differential mode inductor L3, the differential mode inductor L4, and the temperature detection filter capacitor are all conventional existing technologies in this field and will not be described in detail here. The PT resistor at the tip of the charging gun is connected to the circuit interface and amplified by the op amp U1 to the sampling interface of the main control chip in the charger.

[0035] The control device includes a gun lock control unit connected to the main control module. This control unit includes a relay RLY1, an electrolytic capacitor EC1, and an electromagnetic lock. These components are conventional in the art and will not be described in detail here. When the gun is plugged in for charging, the relay closes, charging the capacitor and electronically locking the gun. Once charging is complete, the relay opens, discharging the capacitor and unlocking the electronic lock.

[0036] The control device includes a communication protocol interface, an ambient temperature detection interface, and a protocol control signal output interface, all of which are connected to the main control module. The communication protocol interfaces include CAN communication protocol sub-interfaces, power carrier communication protocol sub-interfaces, RS232 communication protocol sub-interfaces, RS485 communication protocol sub-interfaces, and Ethernet sub-interfaces. Log capture and remote upgrades are available as needed.

[0037] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control device compatible with multiple standard charging interfaces, characterized in that: It includes a gun presence detection module, a protocol conversion module and a main control module; The gun presence detection module is used to determine the connection status of the charging gun and generate a detection signal to be transmitted to the protocol conversion module; The protocol conversion module includes a plurality of protocol activation subunits, each of which includes a self-locking button, a filter capacitor, a pull-down resistor, and a protocol signal output terminal. The filter capacitor and the pull-down resistor are connected in parallel to the self-locking button and the protocol signal output terminal. When the protocol conversion module receives a detection signal, the self-locking button corresponding to the detection signal is closed, causing the protocol signal output terminal to output a protocol control signal. The main control module is used to control the discharge of the charging interface according to the protocol control signal.

2. The control device for a multi-standard charging interface as claimed in claim 1, wherein: The control device includes two groups of communication interfaces connected to the main control module, and the communication interfaces include an American standard sub-interface, a European standard sub-interface, a Chinese standard sub-interface and a Japanese standard sub-interface.

3. The control device for a multi-standard charging interface as claimed in claim 2, wherein: The American standard sub-interface includes a first temperature detection interface, a first CP interface and a PP interface; The European standard sub-interface includes a second temperature detection interface and a second CP interface; The national standard sub-interface includes a third temperature detection interface, a first electromagnetic lock interface, a first CAN communication interface and an auxiliary power supply interface; The Japanese standard sub-interface includes a second electromagnetic lock interface and a second CAN communication interface.

4. The control device for a multi-standard charging interface as claimed in claim 2, wherein: The self-locking button is configured as an American standard button (101), a European standard button (102), a national standard button (103) or a Japanese standard button (104); the American standard button (101) corresponds to the American standard sub-interface, the European standard button (102) corresponds to the European standard sub-interface, the national standard button (103) corresponds to the national standard sub-interface, and the Japanese standard button (104) corresponds to the Japanese standard sub-interface.

5. The control device for a multi-standard charging interface as claimed in claim 1, wherein: The gun presence detection module includes a filter capacitor, a chip resistor R, a reference voltage source U57, a transistor pull-up coupler U55 and a pull-up resistor R290.

6. The control device compatible with multiple-standard charging interfaces according to claim 1, wherein: The control device includes a temperature detection unit connected to the main control module, and the temperature detection unit includes an operational amplifier U1, a bidirectional transient voltage suppression diode D1, a bidirectional transient voltage suppression diode D2, a differential mode inductor L1, a differential mode inductor L2, a differential mode inductor L3, a differential mode inductor L4 and a temperature detection filter capacitor.

7. The control device for a multi-standard charging interface as claimed in claim 1, wherein: The control device includes a gun lock control unit connected to the main control module, and the gun lock control unit includes a relay RLY1, an electrolytic capacitor EC1 and an electromagnetic lock.

8. The control device for a multi-standard charging interface as claimed in claim 1, wherein: The control device includes a communication protocol interface, an ambient temperature detection interface and a protocol control signal output interface, and the communication protocol interface, the ambient temperature detection interface and the protocol control signal output interface are all connected to the main control module.

9. The control device compatible with multiple-standard charging interfaces according to claim 8, characterized in that: The communication protocol interface includes a CAN communication protocol sub-interface, a power carrier communication protocol sub-interface, an RS232 communication protocol sub-interface, an RS485 communication protocol sub-interface and an Ethernet sub-interface.

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