Low-voltage electric vehicle instrument and electric vehicle

Abstract

The utility model relates to electric motor car technical field especially is low voltage electric motor car instrument and electric motor car, low voltage electric motor car instrument adopts the mode of setting up networking module and voltage conversion module in instrument main part, through the precontrol module with the multiple signals of gathering respectively through networking module and voltage conversion module transmission to instrument main part, wherein, the precontrol module can adopt singlechip circuit to gather the signal of car light, power module, intelligent equipment etc., voltage conversion module is used for converting the voltage in precontrol module into the 12V voltage required by instrument main part, reduces the influence of motor inrush current to instrument. The probability of power failure also greatly reduces, networking module is used for converting the multiple signals of precontrol module collection into the information displayed in the display module of instrument main part, reduces the use quantity of wire harness, reaches the technical effect of reducing instrument failure hidden danger, reduces the space occupied by instrument connecting component.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, and in particular to a low-voltage electric vehicle instrument and an electric vehicle. Background Technology

[0002] Electric bicycles are vehicles that use batteries as auxiliary power and are based on ordinary bicycles, equipped with motors, controllers, batteries, throttles, brake levers, and display systems. Due to their cleanliness, environmental friendliness, ease of operation, and low maintenance costs, they are now widely used in people's lives.

[0003] To better power and control electrical components such as controllers and dashboards, electric vehicles typically place the battery in the base of the vehicle body. The battery is then directly connected to and controlled by cables to alert the driver. However, this connection method presents the following problems:

[0004] Existing electric vehicle instrument panels determine their operating voltage based on the vehicle's design voltage (battery power supply voltage). Since the battery's output voltage is relatively large, it is easy to generate surge currents that can affect the equipment in the instrument panel, posing a potential risk of power failure. Utility Model Content

[0005] The main purpose of this utility model is to provide a low-voltage electric vehicle instrument and electric vehicle, so as to alleviate the problem that the existing electric vehicle instrument determines the instrument's working voltage based on the vehicle's design voltage (battery power supply voltage). Due to the excessively high battery voltage, there is a risk of instrument failure caused by motor surge when the battery is connected to the instrument through the wiring harness.

[0006] To achieve the above objectives, one embodiment of this utility model provides a low-voltage electric vehicle instrument, wherein the electric vehicle includes a lighting control module, a power module, and intelligent devices;

[0007] The low-voltage electric vehicle instrument includes: an instrument body, a front-end control module, a networking module, and a voltage conversion module;

[0008] The front-end control module can be electrically connected to the lighting control module, the power module and the smart device, and can collect signals from the lighting control module, the power module and the smart device, and can transmit the collected signals to the instrument body through the voltage conversion module and the networking module;

[0009] Both the networking module and the voltage conversion module are located inside the instrument body, and both the networking module and the voltage conversion module are electrically connected to the front-end control module.

[0010] The networking module is used to convert multiple signals collected by the front-end control module into display information in the display module of the instrument body; the voltage conversion module is used to convert the voltage in the front-end control module into the 12V voltage required by the instrument body.

[0011] Furthermore, the front-end control module includes a microcontroller circuit;

[0012] The microcontroller circuit has several interfaces corresponding to the lighting control module, the power module, and the smart device; the signal output terminals of the lighting control module, the power module, and the smart device are electrically connected to the corresponding interfaces of the microcontroller circuit through wiring harnesses.

[0013] Furthermore, the instrument body is provided with a first interface group and a second interface group;

[0014] The front-end control module is electrically connected to the voltage conversion module through the first interface group, and the first interface group is used to form a loop between the front-end control module and the voltage conversion module;

[0015] The front-end control module is electrically connected to the networking module through the second interface group, and the second interface group is used to form a loop between the front-end control module and the networking module.

[0016] Furthermore, both the first interface group and the second interface group have two connection ports.

[0017] Furthermore, the voltage conversion module is an XL1509 chip.

[0018] Furthermore, the networking module is an RS485 communication component.

[0019] Furthermore, the RS485 communication component includes a processor and a transceiver. The processor is used to integrate multiple signals received by the front-end control module and transmit the integrated data to the transceiver.

[0020] The transceiver is located inside the instrument body and is used to control the information displayed by the display module based on the data transmitted by the processor.

[0021] Furthermore, the transceiver includes a TP8485E-SR chip.

[0022] Another embodiment of this utility model also provides an electric vehicle, including the aforementioned low-voltage electric vehicle instrument.

[0023] Furthermore, the electric vehicle is equipped with intelligent devices, which include at least an anti-theft device, a seat heating device, a ranging radar device, a driving recorder device, and a side support.

[0024] The beneficial effects of this utility model are:

[0025] By integrating the networking module and voltage conversion module into the main instrument panel, multiple signals collected by the front-end control module are transmitted to the main instrument panel via these modules. The front-end control module, using a microcontroller, collects signals from the vehicle lights, power module, and intelligent devices. The voltage conversion module converts the voltage from the front-end control module to the 12V required by the main instrument panel, reducing the impact of motor inrush current on the instrument panel and significantly lowering the probability of power failure. The networking module converts the multiple signals collected by the front-end control module into information displayed on the instrument panel's display module. The connection between the networking module and the front-end control module uses only one input line and one output line, replacing multiple wiring harnesses in existing technologies. This reduces the number of wiring harnesses used, achieving the technical effects of reducing the risk of instrument failure and minimizing the space occupied by instrument connection components. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the external structure of a low-voltage electric vehicle instrument provided in an embodiment of this utility model;

[0028] Figure 2 This is a schematic diagram of the internal control principle of a low-voltage electric vehicle instrument provided in an embodiment of the present invention.

[0029] Icons: 10-Lighting control module; 20-Power module; 30-Intelligent device; 100-Instrument body; 110-Network module; 111-Second interface group; 120-Voltage conversion module; 121-First interface group; 130-Display module; 200-Front-end control module. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] like Figure 1 and Figure 2As shown, this utility model embodiment provides a low-voltage electric vehicle instrument panel for electric vehicles. The electric vehicle includes: a lighting control module 10 for controlling the vehicle's lights, warning lights, and turn signals; a power module 20 including a motor for providing power for the electric vehicle; and a smart device 30, including but not limited to an anti-theft device, seat heating device, ranging radar device, driving recorder device, and side support. The aforementioned low-voltage electric vehicle instrument panel includes an instrument body 100, a front-end control module 200, a networking module 110, and a voltage conversion module 120. The front-end control module 200 can be electrically connected to the lighting control module 10, the power module 20, and the smart device 30 via a communication harness. After the front-end control module 200 is connected to the lighting control module 10, the power module 20, and the smart device 30, it can collect signals from these components and transmit the collected signals to the instrument panel via the voltage conversion module 120 and the networking module 110. In the main body 100, both the networking module 110 and the voltage conversion module 120 are located within the instrument main body 100 and are electrically connected to the front-end control module 200. The networking module 110 converts multiple signals collected by the front-end control module 200 into display information in the display module 130 of the instrument main body 100. The connection between the networking module 110 and the front-end control module 200 can replace multiple wiring harnesses in the prior art with only one access line and one output line, reducing the number of wiring harnesses used and achieving the technical effect of reducing the risk of instrument failure and reducing the space occupied by instrument connection components. The voltage conversion module 120 converts the voltage in the front-end control module 200 into the 12V voltage required by the instrument main body 100, thereby reducing the impact of motor surge current on the instrument main body 100 and greatly reducing the probability of power supply failure.

[0038] In this embodiment, the lighting control signals collected by the front-end control module 200 from the lighting control module 10 include elements such as turn signals, headlights (including low beam and high beam), and warning lights; the power signals collected by the front-end control module 200 from the power module 20 include signals such as braking, wheel movement, and one-wire communication; the signals collected by the front-end control module 200 from the smart device 30 include modules such as anti-theft devices, seat locks, Bluetooth modules, and 4G cloud. All of the above can be transmitted using existing communication harnesses, which is well-known technology in the field and will not be described in detail here.

[0039] Preferably, in this embodiment, the aforementioned pre-control module 200 includes a microcontroller circuit, wherein the microcontroller circuit has several interfaces corresponding to the lighting control module 10, the power module 20, and the smart device 30. The signal output terminals of the lighting control module 10, the power module 20, and the smart device 30 are all electrically connected to the corresponding interfaces on the microcontroller circuit through communication-enabled wire harnesses, thereby enabling the lighting control module 10, the power module 20, and the smart device 30 to transmit signals to the microcontroller circuit.

[0040] Furthermore, the instrument body 100 is provided with a first interface group 121 and a second interface group 111;

[0041] The pre-control module 200 is electrically connected to the voltage conversion module 120 through the first interface group 121, and the first interface group 121 is used to form a loop between the pre-control module 200 and the voltage conversion module 120.

[0042] The front-end control module 200 is electrically connected to the networking module 110 through the second interface group 111, and the second interface group 111 is used to form a loop between the front-end control module 200 and the networking module 110.

[0043] Furthermore, the number of connection ports in both the first interface group 121 and the second interface group 111 is 2.

[0044] The first interface group 121 is used for the connection between the voltage conversion module 120 and the front-end control module 200. One connection port is +12V and the other connection port is -12V. By setting the two connection ports, the front-end control module 200 and the voltage conversion module 120 are connected in a loop.

[0045] The second interface group 111 is used for the connection between the networking module 110 and the front-end control module 200. One port is the input port of the networking module 110, and the other port is the output port of the networking module 110, so as to form a loop between the front-end control module 200 and the networking module 110.

[0046] Furthermore, the voltage conversion module 120 uses the XL1509 chip.

[0047] The XL1509 chip features built-in thermal shutdown protection, output current limiting protection, and short-circuit protection. It also incorporates a high-voltage power transistor with an efficiency exceeding 90%. By configuring the XL1509 chip to power the instrument body 100 with a 12V supply, the impact of motor inrush current on the instrument is reduced, significantly lowering the probability of instrument body 100 failure.

[0048] Furthermore, the networking module 110 is an RS485 communication component.

[0049] Furthermore, the RS485 communication component includes a processor and a transceiver. The processor is used to integrate multiple signals received by the front-end control module 200 and transmit the integrated data to the transceiver.

[0050] The transceiver is located inside the instrument body 100 and is used to control the information displayed by the display module 130 based on the data transmitted by the processor.

[0051] RS485 is a standard that defines the electrical characteristics of drivers and receivers in balanced digital multipoint systems. This standard was defined by the Telecommunications Industry Association and the Electronic Industries Alliance. Therefore, the TS485 component in this embodiment is configured according to the aforementioned standard to effectively transmit signals over long distances and in environments with high electronic noise. Specifically:

[0052] The processor is used to integrate multiple signals received by the front-end control module 200 and transmit the integrated data to the transceiver;

[0053] The transceiver is located inside the instrument body 100 and is used to control the information displayed by the display module 130 based on the data transmitted by the processor.

[0054] Furthermore, the transceiver includes the TP8485E-SR chip.

[0055] In this embodiment, the transceiver uses the TP8485E-SR chip. For specific connection details, please refer to the patent document (CN202222381855.6) under "RS485 Communication Unit Circuit". Figure 1 The transceiver includes the TP8485E-SR chip and its peripheral circuitry. Pin R of the transceiver is connected to the microcontroller's I / O port PH5, and is connected to the power supply DVDD33V via a series resistor R73. RE and DE are shorted and connected to the collector of the SS8050 transistor. The transistor's collector is connected to the power supply DVDD33V via a series resistor R76. The base is connected to the microcontroller's I / O port PH4 via a series resistor R80, and then grounded along with the emitter via a series resistor R81. Pin D of the transceiver is grounded. Pins A and B of the transceiver are connected to ground via series resistors R78 and R71, respectively, and then to ground via a transient suppression diode PSM712-LF-T7. To protect the circuit, a gas discharge tube 2RK075M-4 is connected in series to pins A and B and then grounded. Pull-up and pull-down resistors are introduced at pins A and B respectively, and a resistor R75 is connected between pins A and B, as described in the connection diagram.

[0056] Furthermore, the instrument body 100 includes a control box, and the networking module 110 and voltage conversion module 120 are installed inside the control box;

[0057] The control box is located at the end of the instrument body 100 away from the display module 130.

[0058] The control box can be installed in the form of a slot at the end of the instrument body 100 away from the display module 130, which facilitates the installation and subsequent management of the networking module 110 and the voltage conversion module 120.

[0059] Secondly, this embodiment also provides an electric vehicle, including the low-voltage electric vehicle instrument described above.

[0060] The application principle of low-voltage electric vehicle instruments in electric vehicles has been described above and will not be repeated here.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A low-voltage electric vehicle instrument, wherein the electric vehicle includes a lighting control module (10), a power module (20), and an intelligent device (30); Its features are, The low-voltage electric vehicle instrument includes: an instrument body (100), a front-end control module (200), a networking module (110), and a voltage conversion module (120); The front-end control module (200) can be electrically connected to the lighting control module (10), the power module (20) and the smart device (30), and can collect signals from the lighting control module (10), the power module (20) and the smart device (30), and can transmit the collected signals to the instrument body (100) through the voltage conversion module (120) and the networking module (110); The networking module (110) and the voltage conversion module (120) are both located inside the instrument body (100), and both the networking module (110) and the voltage conversion module (120) are electrically connected to the front-end control module (200). The networking module (110) is used to convert multiple signals collected by the front-end control module (200) into display information in the display module (130) of the instrument body (100); the voltage conversion module (120) is used to convert the voltage in the front-end control module (200) into the 12V voltage required by the instrument body (100).

2. The low-voltage electric vehicle instrument according to claim 1, characterized in that, The front-end control module (200) includes a microcontroller circuit; The microcontroller circuit has several interfaces corresponding to the lighting control module (10), the power module (20), and the smart device (30); the signal output terminals of the lighting control module (10), the power module (20), and the smart device (30) are electrically connected to the corresponding interfaces of the microcontroller circuit through wire harnesses.

3. The low-voltage electric vehicle instrument according to claim 1, characterized in that, The instrument body (100) is provided with a first interface group (121) and a second interface group (111); The pre-control module (200) is electrically connected to the voltage conversion module (120) through the first interface group (121), and the first interface group (121) is used to form a loop between the pre-control module (200) and the voltage conversion module (120); The front-end control module (200) is electrically connected to the networking module (110) through the second interface group (111), and the second interface group (111) is used to form a loop between the front-end control module (200) and the networking module (110).

4. The low-voltage electric vehicle instrument according to claim 3, characterized in that, The number of connection ports in the first interface group (121) and the second interface group (111) are both 2.

5. The low-voltage electric vehicle instrument according to claim 1, characterized in that, The voltage conversion module (120) is an XL1509 chip.

6. The low-voltage electric vehicle instrument according to claim 1, characterized in that, The networking module (110) is an RS485 communication component.

7. The low-voltage electric vehicle instrument according to claim 6, characterized in that, The RS485 communication component includes a processor and a transceiver. The processor is used to integrate multiple signals received by the front-end control module (200) and transmit the integrated data to the transceiver. The transceiver is located inside the instrument body (100) and is used to control the information displayed by the display module (130) according to the data transmitted by the processor.

8. The low-voltage electric vehicle instrument according to claim 7, characterized in that, The transceiver includes a TP8485E-SR chip.

9. An electric vehicle, characterized in that, Including the low-voltage electric vehicle instrument as described in any one of claims 1 to 8.

10. The electric vehicle according to claim 9, characterized in that, The electric vehicle is equipped with an intelligent device (30), which includes at least an anti-theft device, a seat heating device, a ranging radar device, a driving recorder device, and a side support.

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