An electric vehicle controller system

Abstract

The utility model discloses a kind of electric vehicle controller systems, it is related to electric vehicle controller field, the electric vehicle controller system includes N first port, power conversion circuit, low voltage circuit and unidirectional conducting circuit;Every first port is used as the input channel and / or output channel of the functional signal of electric vehicle controller intercommunication;M target first ports in N first port are connected with power conversion circuit respectively through a unidirectional conducting circuit, the anode of unidirectional conducting circuit is connected with target first port, cathode is connected with power conversion circuit, power conversion circuit is connected with low voltage circuit;Wherein, 2≤M≤N.The utility model can realize the quick power-on and power-off of low voltage circuit such as control circuit in electric vehicle controller, save power consumption.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle controllers, and specifically to an electric vehicle controller system. Background Technology

[0002] Electric bicycles, electric two-wheelers, and electric tricycles have become important personal transportation tools, and their range is a core indicator of user concern. As the core of vehicle control, the power consumption of the electric vehicle's controller directly affects the vehicle's range.

[0003] In traditional solutions, to ensure the vehicle can be woken up and started at any time, the low-voltage circuits of the electric vehicle controller, such as the control circuit, are usually still powered by the electric vehicle battery after the vehicle is parked, in sleep mode, or locked, only entering a low-power sleep mode through software. However, this solution still has considerable static power consumption, which may result in short battery standby time, or even prevent the user from starting the vehicle due to a depleted battery, seriously affecting the user experience. Utility Model Content

[0004] This utility model provides an electric vehicle controller system to overcome the above-mentioned technical problems, realize the rapid power-on and power-off of low-voltage circuits such as control circuits in the electric vehicle controller, and save power consumption.

[0005] To address the aforementioned problems, this utility model discloses an electric vehicle controller system, comprising N first ports, a power conversion circuit, a low-voltage circuit, and a unidirectional conduction circuit; each first port serves as an input channel and / or output channel for functional signals connected to the electric vehicle controller; M target first ports among the N first ports are each connected to the power conversion circuit through a unidirectional conduction circuit, with the anode of the unidirectional conduction circuit connected to the target first port, the cathode connected to the power conversion circuit, and the power conversion circuit connected to the low-voltage circuit; wherein, 2≤M≤N.

[0006] In some embodiments of this invention, the low-voltage circuit includes a control circuit.

[0007] In some embodiments of this utility model, the system further includes: a port conversion circuit; the port conversion circuit includes a plurality of second ports, the port conversion circuit is connected to N first ports and the plurality of second ports respectively, and the plurality of second ports are used to connect to the control circuit and other modules in the system; wherein, the port conversion circuit connects the first port of the connection function signal to the second port of the support function signal based on the control command transmitted by the control circuit.

[0008] In some embodiments of this invention, the unidirectional conduction circuit consists of one or more diodes.

[0009] In some embodiments of this utility model, among the M target first ports, the functional signal connected to one or more target first ports is a high-voltage signal.

[0010] In some embodiments of this invention, the port conversion circuit further includes a communication port connected to the control circuit, which is used to receive control commands transmitted by the control circuit.

[0011] In some embodiments of this utility model, the port conversion circuit further includes: a control module, which is connected to N channel modules in a one-to-one correspondence with N first ports; the channel modules have multiple functional ports, and the port types of different functional ports are different; the control module controls the first port to connect to the corresponding second port through the target functional port in the channel module it is connected to according to the control command; wherein the signal type of the functional signal connected by the target functional port and the first port is matched with the second port to which it is connected.

[0012] In some embodiments of this invention, the port conversion circuit is soldered onto a PCB board.

[0013] In some embodiments of this invention, the port conversion circuit is integrated into a chip.

[0014] In some embodiments of this invention, the power conversion circuit is a DC-DC converter, and the control circuit is an MCU.

[0015] This utility model has the following advantages: This invention, based on the functional signals connected to the first ports of M targets, realizes the synchronous detection of power supply demand and execution of power supply for low-voltage circuits such as control circuits, and can quickly power on and off low-voltage circuits, saving power consumption. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application.

[0017] Figure 1 This is a schematic diagram of the electric vehicle controller system disclosed in this embodiment of the utility model; Figure 2 This is a schematic diagram of the electric vehicle controller system disclosed in this embodiment of the utility model; Figure 3 This is a schematic diagram of the standard connector and the first port of the electric vehicle controller of this utility model; Figure 4 This is a schematic diagram of the electric vehicle controller system disclosed in this embodiment of the utility model; Figure 5This is a schematic diagram of the electric vehicle controller system disclosed in an embodiment of this utility model. Detailed Implementation

[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0019] Hereinafter, the terms "second," "first," etc., are used for descriptive convenience only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "second," "first," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the embodiments of this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly, and can refer to direct connection or indirect connection through an intermediate medium.

[0021] In this embodiment of the application, "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0022] This application provides an electric vehicle controller system, with reference to... Figure 1 and Figure 2 It includes N first ports, a power conversion circuit, a low-voltage circuit, and a unidirectional conduction circuit; each first port is used as an input channel and / or output channel for the functional signals connected to the electric vehicle controller; M target first ports among the N first ports are each connected to the power conversion circuit through a unidirectional conduction circuit, wherein the anode of the unidirectional conduction circuit is connected to the target first port, the cathode is connected to the power conversion circuit, and the power conversion circuit is connected to the low-voltage circuit; wherein 2≤M≤N.

[0023] like Figure 1 and Figure 2 As shown, the electric vehicle controller has N first ports GC_PORT. <00> ~GC_PORT <n>As is understandable, when the electric vehicle controller is installed on the electric vehicle, its first port is connected to the control line of the actuator on the electric vehicle, thereby enabling the electric vehicle controller to control the electric vehicle. The control line may include the ignition lock, wheel, throttle, brake, and alarm, etc. In the various embodiments of this application, the control line transmits the functional signals referred to in this application; different control lines implement different functions, and therefore the corresponding functional signals are different.

[0024] Before a specific functional signal is connected, the first port can be understood as a general-purpose port capable of transmitting any functional signal. Each first port, based on the characteristics of the functional signal it connects to, can serve as an input channel, output channel, or input-output channel for that functional signal. That is, the connection can be understood as supporting only the input of a functional signal, only the output of a functional signal, or both. Of these N first ports, some can serve as input channels, and some can serve as output channels; this application does not impose any limitations on this.

[0025] The power conversion circuit is a DC-to-DC converter, such as a DC-DC converter, which can be packaged as an electronic circuit device or chip; this application does not limit this. Since the power source of an electric vehicle is a battery pack (typically high-voltage DC such as tens or hundreds of volts), but the operating voltage of low-voltage circuits such as control circuits is relatively low (e.g., mostly a few volts), the voltage difference between the two is significant, making direct power supply impossible. Therefore, this application utilizes a power conversion circuit to convert high-voltage voltage into a corresponding low-voltage voltage to power low-voltage circuits such as control circuits. It is understood that the power conversion circuit is connected to the low-voltage circuit; when the power conversion circuit is powered on, the low-voltage circuit is powered on; when the power conversion circuit is powered off, the low-voltage circuit is also powered off. Furthermore, the low-voltage circuit includes a control circuit; the power conversion circuit is connected to the control circuit; when the power conversion circuit is powered on, the control circuit is powered on; when the power conversion circuit is powered off, the control circuit is also powered off. In various embodiments of this application, the control circuit can be specifically implemented using a microcontroller unit (MCU).

[0026] In this embodiment, M target first ports out of N first ports are each connected to a power conversion circuit via a unidirectional conduction circuit. At least one of these M target first ports has a connected functional signal that can characterize a certain state of the electric vehicle. In this state, low-voltage circuits such as control circuits need to be powered on. The anode of the unidirectional conduction circuit is connected to the target first port, and the cathode is connected to the power conversion circuit. When the functional signal connected to the target first port causes the unidirectional conduction circuit to conduct in the forward direction, the target first port supplies power to the power conversion circuit through the conducting unidirectional conduction circuit, thereby powering on the power conversion circuit and, consequently, powering on low-voltage circuits such as control circuits. If the vehicle is in a state where the control circuit does not need to operate, such as parking, hibernation, or locking, then none of the M target first ports have a signal, or the connected functional signal cannot cause the unidirectional conduction circuit to conduct. In this case, the power conversion circuit cannot be powered on, and low-voltage circuits such as control circuits are in a powered-off state.

[0027] Based on the functional signals connected to the first ports of M targets, this application realizes the synchronization of power supply demand detection and power supply execution for low-voltage circuits such as control circuits, which can quickly power on and off low-voltage circuits and save power consumption.

[0028] In one embodiment of this application, among the M target first ports, one or more target first ports are connected by a high-voltage signal. This high-voltage signal can enable a unidirectional conduction circuit to conduct.

[0029] For example, the high-voltage signal can be an ignition switch signal, which indicates that the electric vehicle has started. After the electric vehicle starts, low-voltage circuits such as the control circuit need to be powered on to participate in the control of the vehicle. When any of the M target first ports is connected to an ignition switch signal, this ignition switch signal drives the unidirectional conduction circuit to conduct, powering on the power conversion circuit, and subsequently powering on low-voltage circuits such as the control circuit. When the ignition switch signal disappears, it indicates that the electric vehicle has not been started. At this time, the unidirectional conduction circuit is cut off, the power conversion circuit is de-energized, and low-voltage circuits such as the control circuit are de-energized.

[0030] For example, the high-voltage signal can be an alarm signal. When an electric vehicle is abnormally triggered, the vehicle's alarm will activate. At this time, the control circuit needs to be activated so that it can perform corresponding control functions (such as remotely notifying the owner) based on the alarm signal. When any of the M target first ports has an alarm signal connected to it, the alarm signal drives the unidirectional conduction circuit to conduct, the power conversion circuit to power on, and consequently, low-voltage circuits, including the control circuit, are powered on by the power conversion circuit. When the alarm signal disappears and no high-voltage signals, such as the ignition lock, are connected, it indicates that the electric vehicle has not been started. At this time, the unidirectional conduction circuit is cut off, the power conversion circuit is de-energized, and low-voltage circuits, including the control circuit, are de-energized.

[0031] In various embodiments of this application, the unidirectional conduction circuit can be implemented by a variety of structures. Optionally, the unidirectional conduction circuit is one or more diodes. If it is a single diode, the anode of the diode is connected to the target first port, and the cathode is connected to the power conversion circuit. If it is multiple diodes, the multiple diodes are connected in series, that is, the anode of the first diode is connected to the target first port, the cathode is connected to the anode of the second diode, and so on, and the cathode of the last diode is connected to the power conversion circuit.

[0032] Currently, most electric vehicle controllers use standard plug-in interfaces to constrain these N first ports, such as... Figure 3 As shown, there are a total of 30 functional interfaces, divided into standard interfaces consisting of 6 first ports, 8 first ports, and 16 first ports. Similarly, the connectors of the multiple control lines executing electric vehicle functions are also constrained into corresponding plugs to connect to these standard interfaces, enabling communication with the electric vehicle controller. Electric vehicles come in a wide variety of brands and models, and different manufacturers may define different functions for the N first ports on the electric vehicle controller, or they may achieve the same function, but the positions of the first ports corresponding to different functions may differ or not be entirely the same. This means that while electric vehicle controllers all use plugs with the same physical appearance that insert into standard interfaces with the same physical appearance, different manufacturers may define different or not entirely the same functions for each first port. For example, if an electric vehicle controller has a total of 30 first ports, Manufacturer X defines that among these 30 first ports, first port 1 corresponds to function A, first port 2 corresponds to function B, first port 3 corresponds to function C, and so on. For these 30 first ports with the same physical appearance, Manufacturer Y defines that first port 1 corresponds to function C, first port 2 corresponds to function A, and first port 3 corresponds to function B.

[0033] The above M target first ports can be set at the factory or changed during maintenance of the electric vehicle controller. The specific first ports of the electric vehicle controller that these M target first ports refer to can be set by relevant technicians based on the brand and model of the electric vehicle. The value of M ranges from 2 to N, meaning that at least two of these N first ports are powered through a unidirectional conduction circuit and a power conversion circuit. Figure 1 As shown. Of course, it can also be as follows: Figure 2 As shown, each of the N first ports is connected to the power conversion circuit through a unidirectional conduction circuit. This makes it applicable to any electric vehicle brand, but the circuit occupies a large area. Those skilled in the art can choose the appropriate design based on actual needs.

[0034] In one optional example, based on the port definition logic of most electric vehicle manufacturers on the market, the first port containing the functional signals that may need to power on low-voltage circuits such as control circuits can be selected as the target first port. For example, some electric vehicle manufacturers define port 1 as the first port for connecting the ignition lock and port 2 as the first port for connecting the alarm signal; while others define port 3 as the first port for connecting the ignition lock and port 4 as the first port for connecting the alarm signal. Therefore, ports 1, 2, 3, and 4 can all be used as target first ports, each connected to a unidirectional conduction circuit.

[0035] In the embodiments of this application, reference continues to be made to Figure 1 and Figure 2 The electric vehicle controller system also includes a port conversion circuit; the port conversion circuit includes multiple second ports, and the port conversion circuit is connected to N first ports and multiple second ports. The multiple second ports are used to connect to the control circuit and other modules in the system; wherein, based on the control command transmitted by the control circuit, the port conversion circuit connects the first port that connects the function signal to the second port that supports the function signal.

[0036] A port conversion circuit can be understood as an interface circuit for an electric vehicle controller. Based on the control commands transmitted by the control circuit, it connects the first port of the functional signal to the second port of the supporting functional signal, thereby enabling the connection between the control circuit and the multiple control lines connected to the electric vehicle controller, and ultimately realizing the control circuit's control over the electric vehicle. Because of this port conversion circuit, even if different electric vehicle manufacturers may define different first ports on the electric vehicle controller for the same functional signal—that is, different manufacturers have different port definition logic—this application can establish control paths or information transmission paths for each functional signal within the port conversion circuit, based on the port definition logic of each manufacturer.

[0037] The specific functional signals supported by each second port of the port conversion circuit are configured by the control circuit. For example, technical personnel can identify the relevant electric vehicle brand's instruction manual and write the corresponding configuration information into the control circuit (such as the MCU) of the electric vehicle controller, enabling the control circuit (such as the MCU) to send control commands to the port conversion circuit based on this configuration information. Optionally, these multiple second ports can include analog ports, digital ports, power ports, etc. For example, analog ports support analog functional signals, digital ports support digital functional signals, and power ports support low-voltage power supply functional signals. These multiple second ports are used to connect to the control circuit and other modules in the system. The control module can be an MCU, and other modules can be DC-DC converters. For example, analog ports and digital ports are connected to the MCU, while the power port is connected to the DC-DC converter.

[0038] Among them, continue to refer to Figure 1 and Figure 2 The port conversion circuit may also include a communication port connected to a control circuit (such as an MCU). The communication port serves as a channel for information exchange between the port conversion circuit and the control circuit. In this embodiment, the communication port is specifically used to receive the control command transmitted by the control circuit. There may be multiple communication ports, the number of which depends on the communication protocol used by the communication ports and the interaction requirements between the port conversion circuit and the control circuit; this application does not limit this number.

[0039] Further reference Figure 4 and Figure 5 As shown, the port conversion circuit may further include: a control module and a channel module set for each first port. The channel module has multiple functional ports, and the port types of different functional ports are different. The control module controls the first port to connect to the corresponding second port through the target functional port in the corresponding channel module according to the control command. The signal type of the functional signal connected to the first port of the channel module to which the target functional port is located is matched with the second port to which it is connected.

[0040] Optionally, each functional port may include any number of analog functional ports, digital input functional ports, digital output functional ports, power supply functional ports, grounding functional ports, etc. It should be noted that in the various embodiments of this application, a functional port can be understood as a connection point between the channel module and other circuits. Multiple functional ports indicate that the channel module has multiple connection points, and the port types of different connection points are different. It should not be simply understood that a functional port has a physical structure similar to the first port.

[0041] Understandably, since the signal types of the functional signals connected to the target functional port and the first port are matched, when the first port is connected to the target functional port in the corresponding channel module, and the target functional port is connected to the corresponding second port, a connection relationship is established between the first port and the corresponding second port for a certain functional signal. This allows the control circuit to control the electric vehicle accordingly after it is connected to the second port.

[0042] The port conversion circuit provided in this application embodiment enables the conversion of functional ports defined by different manufacturers within the electric vehicle controller. This conversion is not simply a matter of changing the connectivity between the first and second ports; this application uses the target functional port as an intermediate bridge to achieve a more comprehensive functional conversion, making it applicable to a wider range of electric vehicles and improving the versatility of the electric vehicle controller. Figure 4 This is an example where M is 2. Figure 5 An example where M takes the value N.

[0043] In this embodiment, optionally, the channel module may include multiple functional branch circuits (not shown in the figure). These multiple functional branch circuits are connected between their corresponding first ports and multiple functional ports, with different functional branch circuits connected to different functional ports. These multiple functional branch circuits may include multiple switches. The control module can connect the first port to a target functional port among the multiple functional ports by controlling different switches to be on or off. Furthermore, the control module can select which target functional port in the channel module is connected to the corresponding second port through a relevant selection circuit. Each second port corresponds to a selection circuit, the input of which is connected to multiple channel modules, and the output of which is connected to the selection circuit.

[0044] It is worth noting that not every N first ports needs to be connected to a corresponding second port via the target function port in its corresponding channel module, nor does every first port need to be connected, nor does every second port need to be connected. The control module can, based on this control command, connect one or more first ports to corresponding second ports via the target function port in its corresponding channel module. This application does not limit which first ports need to be connected to the second port via their corresponding channel module's target function port, or which first and second ports do not need to be connected. Optionally, the N first ports can be 30 first ports, and the multiple second ports can be 24 second ports.

[0045] It is also worth noting that, Figures 1-5 This is merely one example of an electric vehicle controller system. In other examples, the port conversion circuit may be omitted; that is, the control circuit connects to one or more first ports through related voltage conversion circuits, etc., to directly connect the control lines connected to the electric vehicle controller. These embodiments are suitable for electric vehicles of a fixed brand and have poor versatility. The specific structure of these embodiments can be found in relevant prior art, and will not be elaborated here.

[0046] Optionally, the port conversion circuit is soldered onto a PCB board (not shown in the figure). In this embodiment, the various circuits and components in the port conversion circuit are implemented by soldering onto the PCB board. This solution uses a large number of peripheral components, occupies a large area, and has a high cost. Moreover, due to the size limitation of the electric vehicle controller, it is difficult to apply to multiple electric vehicle brands, thus limiting the universality of the electric vehicle controller.

[0047] Optional, such as Figure 4 and Figure 5 As shown, the port conversion circuit is integrated into the chip. It's worth noting that since the port conversion circuit is integrated into the chip, the chip also includes N first pins, each corresponding to one of the N first ports. The multiple second ports of this port conversion circuit can be represented as second pins of the chip, used to connect to the control circuit and other modules in the system. Correspondingly, the communication port is also represented as a communication pin, used to connect to the control circuit. This embodiment implements the port conversion circuit using a chip, occupying a very small circuit area, saving PCB board area, and overcoming the size limitations of the electric vehicle controller. Based on practical needs, by writing configuration logic for different electric vehicle manufacturers into the control circuit, the electric vehicle controller using this solution can be applied to electric vehicles from various manufacturers on the market, supporting up to a dozen, several dozen, or even more manufacturers, significantly improving its versatility. Simultaneously, since the port conversion circuit is implemented within the chip, the thickness of the PCB board is reduced, decreasing the number of PCBs and peripheral components used, which not only greatly reduces the manufacturing cost of the electric vehicle controller but also facilitates controller heat dissipation. Figure 4 and Figure 5 For the sake of simplicity, the N first pins of the chip are not shown in the diagram.

[0048] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.< / n>

Claims

1. An electric vehicle controller system, characterized in that, It includes N first ports, a power conversion circuit, a low-voltage circuit, and a unidirectional conduction circuit; Each first port is used as an input channel and / or output channel for functional signals connected to the electric vehicle controller; M of the N first ports are each connected to the power conversion circuit through a unidirectional conduction circuit. The anode of the unidirectional conduction circuit is connected to the target first port, the cathode is connected to the power conversion circuit, and the power conversion circuit is connected to the low-voltage circuit. Where 2≤M≤N.

2. The electric vehicle controller system according to claim 1, characterized in that, The low-voltage circuit includes a control circuit.

3. The electric vehicle controller system according to claim 2, characterized in that, The system also includes: a port conversion circuit; The port conversion circuit includes a plurality of second ports, and the port conversion circuit is connected to the N first ports and the plurality of second ports respectively. The plurality of second ports are used to connect to the control circuit and other modules in the system. The port conversion circuit connects the first port that connects to the functional signal to the second port that supports the functional signal based on the control command transmitted by the control circuit.

4. The electric vehicle controller system according to any one of claims 1-3, characterized in that, The unidirectional conduction circuit consists of one or more diodes.

5. The electric vehicle controller system according to claim 2 or 3, characterized in that, Among the M target first ports, one or more target first ports are connected to a high-voltage signal.

6. The electric vehicle controller system according to claim 3, characterized in that, The port conversion circuit also includes a communication port connected to the control circuit, the communication port being used to receive the control commands transmitted by the control circuit.

7. The electric vehicle controller system according to claim 3, characterized in that, The port conversion circuit further includes: a control module, which is connected to N channel modules in a one-to-one correspondence with the N first ports; the channel modules have multiple functional ports, and the port types of the different functional ports are different; According to the control command, the control module controls the first port to connect to the target function port in the channel module connected to it and the corresponding second port, wherein the signal type of the function signal connected to the first port and the second port connected to it are matched.

8. The electric vehicle controller system according to claim 3 or 7, characterized in that, The port conversion circuit is soldered onto the PCB board.

9. The electric vehicle controller system according to claim 3 or 7, characterized in that, The port conversion circuit is integrated into the chip.

10. The electric vehicle controller system according to claim 2, 3, or 7, characterized in that, The power conversion circuit is a DC-DC converter, and the control circuit is an MCU.

Images