An electric vehicle energy flow detection device

Abstract

The utility model relates to electric automobile energy flow detection technical field relates to a kind of electric automobile energy flow detection device. Including box, box side open setting, display panel, control module and power supply are equipped in box, display panel and control module are electrically connected with power supply;It also includes two or more acquisition modules, each acquisition module is installed in box, each acquisition module is electrically connected with power supply, and each acquisition module is connected with display panel communication;Power supply is used to power supply to each acquisition module, display panel is configured to be used to show the operating state of each acquisition module.The electric automobile energy flow detection device integrates display panel, control module, power supply and two or more acquisition modules in one box, and the box is open on one side, which is convenient for installation, wiring and maintenance. This highly integrated design greatly improves the compactness and portability of the device.

Description

Technical Field

[0001] This specification relates to the field of electric vehicle energy flow detection technology, and in particular to an electric vehicle energy flow detection device. Background Technology

[0002] With the global energy structure adjustment and the deepening of the "carbon peaking and carbon neutrality" strategy, the electric vehicle industry has experienced explosive growth. Against this backdrop, the country continues to encourage and actively promote the development of new energy vehicles, placing higher demands on their driving range, overall energy efficiency, reliability, safety, and comfort.

[0003] Therefore, in the research, development, verification and production process, accurate and efficient energy flow testing and analysis of the whole vehicle and its key subsystems (such as batteries, motors, electronic control and thermal management systems) has become an indispensable key link and an important means of electric vehicle technology research.

[0004] However, traditional energy flow testing solutions still have several significant drawbacks. First, the system integration is low. Engineers often need to mechanically stack and electrically connect multiple functionally independent devices (such as power simulators, data acquisition instruments, CAN cards, etc.), resulting in complex, time-consuming, and cumbersome system setup with poor overall reliability. In addition, although laboratory-grade equipment is highly accurate, it is usually large, bulky, and difficult to move, making it unsuitable for the needs of highly mobile testing scenarios such as real vehicle road tests.

[0005] Therefore, this specification provides an energy flow detection device for electric vehicles. Utility Model Content

[0006] This specification provides an electric vehicle energy flow detection device that solves the problems of existing energy flow testing equipment being complex to set up, time-consuming, and having complicated cables, as well as having poor overall reliability and being unsuitable for portability.

[0007] The following technical solution is adopted in this specification: This specification provides an energy flow detection device for an electric vehicle, including a housing with one side open. The housing contains a display panel, a control module, and a power supply. The display panel and the control module are electrically connected to the power supply. The device also includes two or more data acquisition modules, each installed within the housing and electrically connected to the power supply. Each data acquisition module is also communicatively connected to the display panel. The power supply provides power to each data acquisition module, and the display panel is configured to display the operating status of each data acquisition module.

[0008] Based on the aforementioned technical means, the display panel, control module, power supply, and two or more acquisition modules are all integrated into a single enclosure, with one side of the enclosure open for easy installation, wiring, and maintenance. This highly integrated design greatly improves the device's compactness and portability. It consolidates previously scattered detection components into a single independent device, reducing external connection cables and installation space, facilitating deployment and use in electric vehicles or repair shops. Furthermore, different types of acquisition modules can be flexibly configured according to different detection needs (such as detecting energy flow at different locations like batteries, motors, and charging interfaces). When additional detection points or upgraded functions are required, acquisition modules can be added or replaced within the enclosure without replacing the entire device, reducing maintenance and upgrade costs. Users can intuitively view the normal operation of each acquisition module through the display panel, eliminating the need for individual checks and significantly improving monitoring efficiency. When a acquisition module malfunctions (e.g., offline, abnormal data), the display panel immediately shows its abnormal status, helping technicians quickly locate the problem and shorten troubleshooting time. This device can independently complete energy flow acquisition, processing, display, and control without relying on external equipment, possessing complete detection functions and can be used as an independent detection tool, improving application convenience and independence. The control module can synchronize the signals or data collected by each acquisition module. Based on the hardware-level synchronization mechanism built into the control module, it ensures that all signals have a unified high-precision timestamp, and the data is accurate and reliable.

[0009] Furthermore, the acquisition module includes a temperature acquisition module.

[0010] Based on the aforementioned technical means, the data acquisition module includes a temperature acquisition module, which can simultaneously collect temperature data of the entire vehicle and its subsystems. This enables coordinated monitoring of energy flow and temperature, providing more comprehensive data support for energy management, safety warnings, and fault diagnosis. Furthermore, real-time temperature monitoring can effectively prevent safety accidents caused by overheating.

[0011] Furthermore, the acquisition module includes a voltage and current acquisition module.

[0012] Based on the aforementioned technical means, voltage and current are the most direct and essential physical quantities characterizing "energy flow". The acquisition module includes voltage and current acquisition modules, which realizes the direct and accurate quantification of "energy flow". It can accurately depict the actual flow path and magnitude of energy under different operating conditions such as charging and discharging, driving, and recovery, and provide the most fundamental data support for system performance evaluation.

[0013] Furthermore, the acquisition module includes a strain acquisition module.

[0014] Based on the aforementioned technical methods, half-shaft torque is a key physical quantity characterizing mechanical energy transmission efficiency and drive load. The strain acquisition module measures the half-shaft strain in real time and converts it into torque values, achieving indirect and precise quantification of mechanical energy output. This data accurately reflects the actual mechanical energy transmitted to the wheels through the transmission system under driving, braking, and regenerative braking conditions, providing crucial data support for system transmission efficiency analysis and dynamic energy flow distribution.

[0015] Furthermore, the acquisition module includes a CAN-FD acquisition module.

[0016] Based on the aforementioned technical means, the acquisition module includes a CAN-FD acquisition module, marking a comprehensive upgrade of this electric vehicle energy flow detection device from a physical signal acquisition device to an intelligent data hub integrating in-vehicle network communication. This improvement greatly enhances the device's interaction capabilities with the vehicle's internal systems, enabling it to directly acquire digital information from within the vehicle controller (such as the Battery Management System (BMS) and Vehicle Control Unit (VCU), thereby achieving panoramic monitoring of energy flow through a combination of internal and external technologies and hardware and software collaboration.

[0017] Furthermore, the acquisition module includes a digital I / O module.

[0018] Based on the aforementioned technical means, digital I / O is one of the most common interface forms in industrial control and automotive electronics. It has strong level compatibility and can easily connect to switch signals from different vehicle models and suppliers, improving the versatility and compatibility of the device. It can also connect to external buttons, emergency stop switches, remote start devices, etc., to meet customized testing needs.

[0019] Furthermore, each of the acquisition modules is covered with a shielding layer, which is used to prevent signal interference between the acquisition modules.

[0020] Based on the above technical means, the shielding layer wrapped around each acquisition module can effectively block the coupling of electromagnetic fields between acquisition modules, avoid signal interference between acquisition modules, and ensure that the acquired and measured data are true and accurate.

[0021] Furthermore, a cooling device is provided inside the box.

[0022] Based on the above technical means, the problem of heat accumulation caused by the power consumption of highly integrated electronic devices in a closed space due to their own power consumption and the external environment is solved. The cooling device maintains the internal temperature of the enclosure within a reasonable range, which can significantly reduce the measurement error caused by temperature rise.

[0023] Furthermore, the cooling device is a fan, and the box body has heat dissipation windows on both sides.

[0024] Based on the above technical means, fan-driven forced air cooling can improve heat dissipation capacity and effectively cope with the heat load brought about by the integration of multiple acquisition modules.

[0025] Furthermore, the box is equipped with a handle.

[0026] Based on the aforementioned technical means, the handle allows users to easily grasp the device, enabling it to be easily carried from tool carts, repair kits, or laboratories to vehicle testing points (such as near the chassis, battery compartment, or motor compartment) without the need for other tools or multiple people working together. Furthermore, in multi-vehicle testing, production line testing, or road testing scenarios, the device can be quickly moved between different vehicles, improving testing efficiency.

[0027] The above-mentioned technical solutions adopted in this specification can achieve the following beneficial effects: The display panel, control module, power supply, and two or more acquisition modules are all integrated into a single enclosure, with one side open for easy installation, wiring, and maintenance. This highly integrated design significantly improves the device's compactness and portability. It consolidates previously scattered detection components into a single, independent unit, reducing external cables and installation space, facilitating deployment and use in electric vehicles or repair shops. Furthermore, different types of acquisition modules can be flexibly configured to meet various detection needs (such as detecting energy flow at different locations like batteries, motors, and charging interfaces). When additional detection points or functional upgrades are required, acquisition modules can be added or replaced within the enclosure without replacing the entire device, reducing maintenance and upgrade costs. Users can intuitively view the functionality of each acquisition module on the display panel, eliminating the need for individual checks and greatly improving monitoring efficiency. When a module malfunctions (e.g., offline, abnormal data), the display panel immediately shows its abnormal status, helping technicians quickly locate the problem and shorten troubleshooting time. This device can independently complete energy flow acquisition, processing, display, and control without relying on external equipment, possessing complete detection capabilities and serving as an independent detection tool, enhancing its ease of use and independence. The control module can synchronize the signals or data collected by each acquisition module. Based on the hardware-level synchronization mechanism built into the control module, it ensures that all signals have a unified high-precision timestamp, and the data is accurate and reliable. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of an electric vehicle energy flow detection device according to the present invention; Figure 2 This is a perspective view of an electric vehicle energy flow detection device according to the present invention; Figure 3 This is a front view of an electric vehicle energy flow detection device according to the present invention; Figure 4 This is a cross-sectional view of an electric vehicle energy flow detection device according to the present invention.

[0029] Figure label: 1-Box; 2-Display panel; 3-Control module; 4-Temperature acquisition module; 5-Voltage and current acquisition module; 6-Strain acquisition module; 7-CAN-FD acquisition module; 8-Digital I / O modules; 9-Shielding layer; 10- Fan; 11- Heat dissipation window; 12-Handle.

[0030] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.

[0032] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0034] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0035] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0036] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0037] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0038] Figure 1 This is a schematic diagram of the structure of an electric vehicle energy flow detection device provided in this specification. Figure 1 As shown, the electric vehicle energy flow detection device (hereinafter referred to as the device) includes a housing 1. One side of the housing 1 is open, and the housing 1 houses a display panel 2, a control module 3, and a power supply. Both the display panel 2 and the control module 3 are electrically connected to the power supply. Furthermore, the device also includes two or more data acquisition modules. Figure 1Below the display panel 2 and control module 3 are the various data acquisition modules. The device performs detection work using data collected by these modules. Each acquisition module is installed inside the housing 1 and is communicatively connected to the display panel 2. To ensure proper operation, each acquisition module is electrically connected to a power supply. Therefore, the power supply is configured to provide power to each acquisition module, and the display panel 2 is configured to display the operating status of each module. The control module 3 incorporates a hardware-level synchronization mechanism to ensure that the signals acquired by each module have a unified, high-precision timestamp.

[0039] It is worth noting that the operating status of each acquisition module can be used to characterize whether each acquisition module is operating normally. The power supply is a DC power supply with a voltage range of 18V~36V. To adapt to common AC power scenarios, a 220V power adapter can be configured to convert 220V AC power to the required DC power. The power supply and control module 3 is suitable for signal acquisition in harsh environments according to GB / T6587-2012 Group III, with a shock resistance of 110g, an operating temperature range of -40℃ to 70℃, and an IP65 protection rating. This design and testing standard is designed for the harshest industrial sites, ensuring reliable signal acquisition in these environments. It has extremely strong environmental adaptability, can operate in extremely cold to extremely hot temperatures, can withstand severe impacts, and has complete dustproof and water-jet-proof capabilities. In addition, the enclosure 1 can support up to 11 acquisition modules. The enclosure 1 can be constructed with a carbon fiber composite material for the main structure, and the interior of the enclosure 1 can be made of high-strength aluminum alloy, balancing lightweight, structural strength, and electromagnetic shielding effectiveness.

[0040] based on Figure 1The electric vehicle energy flow detection device shown integrates the display panel 2, control module 3, power supply, and two or more data acquisition modules into a single housing 1. One side of housing 1 is open for easy installation, wiring, and maintenance. This highly integrated design significantly improves the device's compactness and portability. It consolidates previously scattered detection components into a single, independent device, reducing external cables and installation space, facilitating deployment and use in electric vehicles or repair shops. Furthermore, different types of data acquisition modules can be flexibly configured to meet various detection needs (such as detecting energy flow at different locations like the battery, motor, and charging interface). When additional detection points or functional upgrades are required, data acquisition modules can be added or replaced within housing 1 without replacing the entire device, reducing maintenance and upgrade costs. Users can intuitively view the functionality of each data acquisition module through the display panel 2, eliminating the need for individual checks and greatly improving monitoring efficiency. When a data acquisition module malfunctions (e.g., offline, abnormal data), the display panel 2 immediately displays its abnormal status, helping technicians quickly locate the problem and shorten troubleshooting time. This device can independently complete energy flow acquisition, processing, display, and control without relying on external equipment. It possesses complete detection functions and can be used as a standalone testing tool, improving application convenience and independence. Through control module 3, it can synchronize signals or data collected by various acquisition modules. Based on the hardware-level synchronization mechanism built into control module 3, it ensures that all signals have a unified, high-precision timestamp, ensuring accurate and reliable data. It can integrate power supplies with multiple types of acquisition modules, eliminating equipment stacking and providing a one-stop solution for energy flow testing requirements.

[0041] In one or more embodiments of this specification, the acquisition module in the electric vehicle energy flow detection device includes a temperature acquisition module 4. This temperature acquisition module 4 can directly connect to two mainstream temperature sensors: thermocouples and Pt100 platinum resistance thermometers, and provides the necessary 1mA constant current source support. Its core is a 24-bit high-resolution analog-to-digital converter (ADC), coupled with a micro-voltage range of ±50mV / ±500mV, ensuring extremely high accuracy in temperature measurement. The maximum achievable sampling rate is 1kHz, and with an effective frequency response of DC to 30Hz, it is suitable for measuring slowly changing physical quantities such as temperature. Here, DC indicates the ability to measure direct current signals, and 30Hz indicates the ability to effectively measure AC or dynamic signals with frequencies up to 30 Hz.

[0042] It can simultaneously collect temperature data from the entire vehicle and its subsystems. It enables coordinated monitoring of energy flow and temperature, providing more comprehensive data support for energy management, safety warnings, and fault diagnosis. Furthermore, real-time temperature monitoring can effectively prevent safety accidents caused by overheating. In one or more embodiments of this specification, the acquisition module in the electric vehicle energy flow detection device further includes a voltage and current acquisition module 5. This voltage and current acquisition module 5 is designed for acquiring industry-standard 4-20mA current and ±5V / ±11V voltage signals, possessing high accuracy of 0.3% and high resolution of 24 bits. It can have a frequency response of DC to 30Hz and a sampling rate of up to 1kHz.

[0043] The voltage and current acquisition module 5 enables direct and accurate quantification of "energy flow," accurately depicting the actual flow path and magnitude of energy under different operating conditions such as charging, discharging, driving, and recovery, providing the most fundamental data support for system performance evaluation.

[0044] In one or more embodiments of this specification, the acquisition module in the electric vehicle energy flow detection device further includes a strain acquisition module 6. This module converts the measured half-shaft strain signal into torque and combines it with the speed information provided by the CAN bus to calculate and monitor the real-time output power of the drive half-shaft, providing key data for energy flow analysis. The strain acquisition module 6 has a wide measurement range (±20,000 με), adapting to various strain measurement needs. Its error consists of a relative error of 0.3% and an absolute error of ±3 με, exhibiting high accuracy at large strains and good performance even when measuring small strains (limited by ±3 με).

[0045] The strain acquisition module 6 can accurately calculate the actual mechanical energy transmitted to the wheels through the transmission system under driving, braking and regenerative braking and other conditions, providing key data support for system transmission efficiency analysis and dynamic energy flow distribution.

[0046] In one or more embodiments of this specification, the acquisition module in the electric vehicle energy flow detection device further includes a CAN-FD acquisition module 7. CAN-FD stands for Controller Area Network with Flexible Data-rate. The core function of this module is to access the vehicle's CAN network through the vehicle's On-Board Diagnostics (OBD) interface to obtain the on-board control unit signals required for energy flow analysis. These signals, together with external sensor signals, constitute the test data source. The CAN-FD acquisition module 7 can acquire vehicle bus data, has built-in support for the J1939 protocol, and can directly parse key information such as engine and vehicle status, greatly facilitating vehicle diagnostics, data monitoring, and system development. It also has a maximum communication rate of 1 Mbps, which can meet the communication needs of modern vehicles and machinery based on the J1939 protocol.

[0047] In one or more embodiments of this specification, the acquisition module of the electric vehicle energy flow detection device further includes a digital I / O module 8, designed to achieve precise synchronization between vehicle status events and energy flow data. This module acquires digital switch signals such as pedal status (0 / 1) to accurately record key nodes during the test process, such as start, end, gear shifting, and braking, thereby ensuring that energy flow data can be accurately segmented and categorized to support in-depth operating condition analysis. The digital I / O module 8's digital input (DI) supports both wet and dry contact modes, is compatible with various types of switch and sensor signals, and adapts to complex field wiring requirements. The digital output (DO) is divided into power output (CH1-CH4) and TTL output (CH5-CH8), providing drive capabilities at different voltage and current levels and generating precise switching control signals.

[0048] In one or more embodiments of this specification, each acquisition module is covered by a shielding layer 9, which is used to prevent signal interference between the acquisition modules. Figures 1 to 3 As shown, the shielding layer 9 encloses each acquisition module and separates the acquisition modules from each other.

[0049] The shielding layer 9 wraps around each acquisition module, effectively blocking the coupling of electromagnetic fields between acquisition modules, avoiding signal interference between acquisition modules, and ensuring that the acquired and measured data are true and accurate.

[0050] In one or more embodiments of this specification, a cooling device is provided inside the enclosure 1, which solves the problem of heat accumulation caused by the power consumption of highly integrated electronic devices in a closed space due to their own power consumption and the external environment. The cooling device maintains the internal temperature of the enclosure 1 within a reasonable range, which can significantly reduce the measurement error caused by temperature rise.

[0051] Furthermore, such as Figure 1 and Figure 4 As shown, the cooling device can be a fan 10, and the enclosure 1 has ventilation windows 11 on both sides. The fan 10 can be configured to have its speed continuously adjustable based on the internal temperature of the enclosure 1. The heat generated by the fan 10 can be dissipated through the ventilation windows 11. The temperature inside the enclosure 1 can be monitored continuously, and the fan 10 speed can be increased to quickly dissipate heat when the internal temperature is high, and the fan 10 speed can be reduced when the internal temperature is low.

[0052] In one or more embodiments of this specification, the housing 1 is also provided with a handle 12. The handle 12 facilitates the user's gripping of the electric vehicle energy flow detection device, allowing for easy transport from tool carts, repair kits, or laboratories to vehicle testing points (such as near the chassis, battery compartment, or motor compartment) without the need for other tools or multiple personnel. Furthermore, in multi-vehicle testing, production line testing, or road testing scenarios, the device can be quickly moved between different vehicles, improving testing efficiency. It can be directly placed inside a vehicle for real-vehicle road testing, adapting to both bench and real-road testing scenarios.

[0053] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. An energy flow detection device for electric vehicles, characterized in that, Includes a housing (1), one side of which is open, and a display panel (2), a control module (3) and a power supply are provided inside the housing (1). The display panel (2) and the control module (3) are electrically connected to the power supply. It also includes two or more acquisition modules, each of which is installed inside the housing (1), each of which is electrically connected to the power supply, and each of which is communicatively connected to the display panel (2); the power supply is used to supply power to each of the acquisition modules, and the display panel (2) is configured to display the operating status of each of the acquisition modules; The box (1) is equipped with a cooling device.

2. The electric vehicle energy flow detection device as described in claim 1, characterized in that, The acquisition module includes a temperature acquisition module (4).

3. The electric vehicle energy flow detection device as described in claim 1, characterized in that, The acquisition module includes a voltage and current acquisition module (5).

4. The electric vehicle energy flow detection device as described in claim 1, characterized in that, The acquisition module includes a strain acquisition module (6).

5. The electric vehicle energy flow detection device as described in claim 1, characterized in that, The acquisition module includes a CAN-FD acquisition module (7).

6. The electric vehicle energy flow detection device as described in claim 1, characterized in that, The acquisition module includes a digital I / O module (8).

7. The electric vehicle energy flow detection device as described in claim 1, characterized in that, Each of the acquisition modules is covered with a shielding layer (9), which is used to prevent signal interference between the acquisition modules.

8. The electric vehicle energy flow detection device as described in claim 1, characterized in that, The cooling device is a fan (10), and the box (1) has heat dissipation windows (11) on both sides.

9. The electric vehicle energy flow detection device as described in claim 1, characterized in that, The box (1) is provided with a handle (12).

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