WO2024037471A1

WO2024037471A1 - Vehicle-mounted battery system controlled by means of wireless network

Info

Publication number: WO2024037471A1
Application number: PCT/CN2023/112710
Authority: WO
Inventors: 王超
Original assignee: 吉林省中赢高科技有限公司
Priority date: 2022-08-13
Filing date: 2023-08-11
Publication date: 2024-02-22
Also published as: CN219041415U

Abstract

A vehicle-mounted battery system, which is controlled by means of a wireless network. The vehicle-mounted battery system comprises: a main controller (1), which is arranged in a vehicle; at least one battery pack (4), which is arranged in a vehicle body; and sub-controllers (2), which are connected to the battery pack (4), wherein the main controller (1) performs data and signal transmission with the sub-controllers (2) by means of a wireless network. The main controller (1) controls each sub-controller (2) and the battery pack (4) by means of the wireless network, and the main controller (1) is connected to each sub-controller (2) without using a wire harness, thereby reducing the usage amount of wire harnesses, and thus also reducing the cost of the entire vehicle-mounted battery system.

Description

A vehicle battery system controlled via wireless network

Related applications

This application claims priority to the Chinese utility model patent application with application number 202222127640.1 submitted on August 13, 2022, and cites the entire disclosure of the above patent application as part of this application.

Technical field

The utility model relates to the technical field of automotive electrical appliances, and more specifically, to a vehicle-mounted battery system controlled through a wireless network.

Background technique

Vehicle batteries are an important part of electric vehicles and hybrid vehicles. Using vehicle batteries to power vehicles not only saves energy, but also reduces environmental pollution. Generally, the vehicle battery is installed inside the car body and needs to be connected to a wiring harness to transmit power and control signals. However, this will increase the complexity of the wiring harness wiring inside the car body, increase the difficulty of car assembly and maintenance, and also make the cost of the car high.

Therefore, there is an urgent need in the field of automotive electrical technology for a vehicle-mounted battery system that reduces automotive wiring harnesses, is very convenient to install and maintain, and has low cost.

Utility model content

The purpose of this utility model is to provide a new technical solution for a vehicle-mounted battery system controlled through a wireless network. The main controller of the utility model controls each sub-controller and the battery pack through a wireless network, and does not need to use wire harnesses to connect each sub-controller and the battery pack, saving the usage of wire harnesses and reducing the cost of the entire vehicle battery system.

The utility model provides a wirelessly controlled battery system, which includes a main controller installed in a car, at least one battery pack installed in the vehicle body, and a sub-controller connected to the battery pack. The main controller passes The wireless network performs data and signal transmission with the sub-controller.

Optionally, the battery pack includes a battery core, a battery management module, a battery tray and a battery cover. The battery tray is fixedly or integrally connected to the vehicle body, the battery core is arranged on the battery tray, and the battery cover The board covers the battery core, and the battery management module is connected to the sub-controller.

Optionally, the battery management module is connected to the battery core and used to control charging or discharging or power-off of the battery core.

Optionally, the battery pack further includes a heat dissipation module, and the heat dissipation module is connected to the sub-controller through a wireless network.

Optionally, the main controller includes a wireless transmitting unit, the sub-controller includes a wireless receiving unit, the output end of the main controller is connected to the wireless transmitting unit and sends control signals through the wireless network, and the sub-controller includes a wireless receiving unit. The input end of the controller is connected to the wireless receiving unit and receives the control signal.

Optionally, the main controller includes a wireless receiving unit, the sub-controller includes a wireless transmitting unit, the output end of the sub-controller is connected to the wireless transmitting unit and sends the status information through a wireless network, so The input end of the main controller is connected to the wireless receiving unit and receives the status information.

Optionally, the wireless transmitting unit further includes an encryption module. The output ends of the main controller and the sub-controller are connected to the wireless transmitting unit through the encryption module. The encryption module converts the control signal into Or the status information is encrypted; the wireless receiving unit includes a decryption module, the input terminals of the main controller and the sub-controller are connected to the wireless receiving unit through the decryption module, and the decryption module will receive Decrypt the control signal or the status information.

Optionally, a mobile control terminal is also included, the mobile control terminal is connected to the sub-controller through a wireless network, and the sub-controller feeds back the status information to the mobile control terminal through the wireless network.

Optionally, the sub-controller is provided with a power monitoring device capable of monitoring the remaining power of the battery pack. The power monitoring device is electrically connected to the battery pack and the sub-controller, and The remaining power information of the battery pack is fed back to the sub-controller.

Optionally, the sub-controller is equipped with a power alarm device, the power alarm device is electrically connected to the sub-controller, and an alarm value for the remaining power of the battery pack is set in the sub-controller. When the battery pack When the remaining power is lower than the alarm value, the sub-controller will feedback the alarm signal to the main controller through the wireless network, and the main controller will issue an alarm message through the car display terminal.

The main controller of the utility model controls each sub-controller and battery pack through a wireless network, and does not need to use wire harnesses to connect each sub-controller and battery pack, saving the usage of wire harnesses and reducing the installation and maintenance hours of each battery. , reducing the cost of the entire vehicle battery system.

Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

Figure 1 is a structural block diagram of the vehicle battery system of the present utility model;

Figure 2 is another structural block diagram of the vehicle battery system of the present invention;

Figure 3 is another structural block diagram of the vehicle battery system of the present invention.

Marked in the figure are as follows:
1. Main controller; 2. Sub-controller; 3. Connection harness;
4. Battery pack; 41. Battery tray; 42. Battery core; 43. Battery management module; 44. Battery cover;
45. Cooling module;
5. Mobile control terminal;
71. Wireless transmitting unit; 72. Wireless receiving unit
81. Encryption module; 82. Decryption module.

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application or uses.

Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered a part of the specification.

In all examples shown and discussed herein, any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.

The utility model provides a battery system controlled through a wireless network. As shown in Figure 1, it includes a main controller 1 installed in a car, at least one battery pack 4 installed in the vehicle body, and a sub-controller connected to the battery pack 4. 2, the main controller 1 transmits data and signals with the sub-controller 2 through the wireless network.

Each battery pack 4 inside the car needs to be connected to a wire harness 3 to transmit power and control signals. However, arranging too many wire harnesses inside the car not only increases the amount of car wire harnesses, but also increases the complexity of the car wire harness wiring. The difficulty of car assembly and maintenance has also made the cost of cars remain high.

In order to solve this problem, the present utility model provides a wirelessly controlled vehicle battery system, which transmits control signals and status information through the wireless connection between the main controller 1 and the sub-controller 2, eliminating the need for communication between the battery pack 4 and the instrument panel. The wiring harness connection saves the amount of wiring harness used in the entire vehicle, reduces the weight of the entire vehicle, reduces costs, and also contributes to energy conservation and emission reduction. In addition, when assembling a car, there is no need to carry out complicated wiring, nor to drill holes in each component to pass through the wiring harness, making the installation, maintenance and replacement of the vehicle battery system very easy, reducing processing and maintenance costs, and improving improve production efficiency.

In one embodiment, as shown in Figure 3, the battery pack 4 includes a battery core 42, a battery management module 43, a battery tray 41 and a battery cover 44. The battery tray 41 is fixedly or integrally connected to the vehicle body. The battery core 42 is disposed on the battery tray 41 , the battery cover 44 covers the battery core 42 , and the battery management module 43 is connected to the sub-controller 2 .

The battery pack 4 may be installed at any position on the car body, but the car is always in a vibrating environment during driving, so the battery pack 4 needs to be firmly fixed on the car body. The battery tray 41 of the battery pack 4 can be connected by snapping or screwing. , riveting, bonding or welding, fixed on the car body sheet metal.

The battery core 42 and the battery management module 43 are both fixed on the battery tray 41. The battery management module 43 is connected to the sub-controller 2 through a wireless network. The sub-controller 2 sends charging or discharging signals to the battery management module 43 through the wireless network. The battery cover The plate 44 covers the battery core 42 and the battery management module 43 and is detachably installed on the battery tray 41. The battery cover 44 is fixed on the battery tray 41 by clamping, screwing, etc., and is detachable when necessary to facilitate replacement. The battery cell 42 or the battery pack 4 is repaired.

In one embodiment, the battery management module 43 is connected to the battery core 42 and is used to control the charging or discharging or power-off of the battery core 42 . Inside the battery pack 4, the battery management module 43 is electrically connected to the battery core. When the sub-controller 2 sends a charging or discharging signal to the battery management module 43, the battery management module 43 controls the battery core to charge or discharge.

In one embodiment, the battery pack 4 further includes a heat dissipation module 45, and the heat dissipation module 45 is connected to the sub-controller 2 through a wireless network. The battery pack 4 will generate heat during the charging process of the car. Excessive heat will cause safety hazards to the car. Therefore, the battery pack 4 also includes a heat dissipation module 45. The heat dissipation module 45 is connected to the sub-controller 2 through a wireless network. In the sub-controller 2. When sending the charging signal to the battery management module 43, it also sends the heat dissipation module to the heat dissipation module 45, so that the battery pack 4 can dissipate heat during the charging process, and the battery pack 4 will not be burned due to high temperature, ensuring the safety of car charging.

In one implementation, as shown in Figures 2 and 3, the main controller 1 includes a wireless transmitting unit 71, the sub-controller 2 includes a wireless receiving unit 72, and the output end of the main controller 1 is connected to the wireless transmitting unit 71 and The control signal is sent through the wireless network, and the input end of the sub-controller 2 is connected to the wireless receiving unit 72 and receives the control signal.

The wireless transmitting unit 71 is capable of converting the control signal of the main controller 1 into a wireless transmission signal and then sending it out through a wireless transmitting antenna. For example, F05R is a small-sized, low-voltage, micro-power wireless transmitting module. Adopting SMT technology, the sound surface frequency is stable and the performance is stable. It is especially suitable for small-sized wireless remote control and data transmission products powered by battery 6. The wireless receiving unit 72 is generally divided into two types: super regenerative and superheterodyne receiving modules. According to whether there is codec, it can also be divided into a wireless receiving head (without decoding, outputting pulse signals) and a wireless receiving board (with decoding chip, Output TTL level signal). The control signal of the main controller 1 is sent by the wireless transmitting unit 71 and then received by the wireless receiving unit 72, and converted into a control signal and transmitted to the sub-controller 2, and the sub-controller 2 controls the corresponding battery pack 4. .

In one implementation, as shown in Figures 2 and 3, the main controller 1 includes a wireless receiving unit 72, the sub-controller 2 includes a wireless transmitting unit 71, and the output end of the sub-controller 2 is connected to the wireless transmitting unit 71. The status information is sent through the wireless network, and the input terminal of the main controller 1 is connected to the wireless receiving unit 72 and receives the status information.

When the operating status of the battery pack 4 on the vehicle body changes, status information needs to be fed back to the main controller 1. At this time, the sub-controller 2 needs to be equipped with a wireless transmitting unit 71. The sub-controller 2 can transmit the The status information is passed to the wireless transmitting unit 71, and then the wireless transmitting unit 71 sends it out through the wireless transmitting antenna. The main controller 1 is equipped with a wireless receiving unit 72. After receiving the signal sent by the wireless network, the wireless receiving unit 72 of the main controller 1 converts it into status information of the battery pack 4 and transmits it to the human-machine interface of the car so that the driver can The working status of each battery pack 4 can be understood at any time and corresponding feedback can be made in a timely manner.

In one embodiment, as shown in Figures 2 and 3, the wireless transmitting unit 71 also includes an encryption module 81. The output ends of the main controller 1 and the sub-controller 2 are connected to the wireless transmitting unit 71 through the encryption module 81. Encryption The module 81 encrypts the control signal or status information; the wireless receiving unit 72 includes a decryption module 82. The input terminals of the main controller 1 and the sub-controller 2 are connected to the wireless receiving unit 72 through the decryption module 82. The decryption module 82 converts the received control Signal or status information decryption.

With the increasing progress of vehicle informatization, in-vehicle networks have been set up and used in most cars, and the signal negotiation between different vehicles has also increased accordingly. In order to prevent the wireless control signals between different vehicles from If other vehicles are mistakenly operated, each vehicle's signal transmission and reception will have corresponding encryption and decryption procedures. This is also to prevent hackers from invading the vehicle and prevent external signals from accessing the vehicle's information transmission network. The encryption module 81 uses the internal encoder to re-encode the control signal or status information according to certain rules, that is, The key is then sent out through wireless transmission. In this way, even if other vehicles receive the wireless information, they cannot identify the corresponding information because there is no corresponding key. At the same time, the key will also have its own identification code. , if the identification code of other vehicles receiving information is inconsistent with its own identification code, it will not identify the corresponding information. Only the information receiving device corresponding to the identification code, that is, the corresponding decryption module 82, will decrypt the information using the corresponding rules and pass the decrypted information to the corresponding main controller 1 or sub-controller 2.

In one implementation, as shown in Figures 2 and 3, it also includes a mobile control terminal 5. The mobile control terminal 5 is connected to the sub-controller 2 through a wireless network. The sub-controller 2 feeds back status information to the mobile control through the wireless network. Terminal 5.

The mobile control terminal 5 includes a mobile phone, a tablet or a mobile notebook computer. The mobile control terminal 5 can be connected to the car's wireless network through wifi, Bluetooth, 4G network or 5G network, and communicate with the wireless transmitting unit 71 of the sub-controller 2 and the wireless network. The receiving unit 72 is wirelessly connected and can receive the status information of the battery pack 4 sent by the sub-controller 2. Even if the driver is not in the car, he can observe the situation of the battery pack 4 inside or outside the car through the mobile control terminal 5. So as to handle some abnormal situations in time. For example, if you forget to turn off some battery packs 4, you can check the shutdown status of each battery pack 4 through the mobile control terminal 5, and shut down the battery packs 4 through remote control. The mobile control terminal 5 can also transmit control signals to each battery pack 4 through installed software and control some functions, so that the driver can operate each battery pack 4 without going inside the car.

When the mobile control terminal 5 and the main controller 1 send control signals at the same time, it also means that someone is operating in the cab of the car. The sub-controller 2 will take the control signal sent by the main controller 1 as the standard to avoid the problem caused by the mobile control terminal 5 Misoperation may cause the car to behave unexpectedly.

In one embodiment, the sub-controller 2 is provided with a power monitoring device, which can monitor the remaining power of the battery pack 4. The power monitoring device is in conjunction with the battery pack 4 and the sub-controller. The controller 2 is electrically connected, and the remaining power information of the battery pack 4 is fed back to the sub-controller 2.

If the driver does not notice that the remaining power information of the battery pack 4 is lower than the threshold, it may cause the battery pack 4 or the sub-controller to stop working due to lack of power. Therefore, the battery pack 4 is also equipped with a power alarm device. The power monitoring device is connected to the sub-controller 2 and sets a threshold value for the remaining power information of the battery pack 4 in the sub-controller 2, that is, an alarm value. If the remaining power of the battery pack 4 is lower than the alarm value, the driver needs to be reminded to charge the battery pack 4 in time or replace the battery pack 4 with electricity. The alarm information issued by the power monitoring device includes but is not limited to highlighting or flashing of part of the display content, whistle or voice prompts, etc.

In one embodiment, the sub-controller 2 is provided with a power alarm device. The power alarm device is electrically connected to the sub-controller 2. An alarm value for the remaining power of the battery pack 4 is set in the sub-controller 2. When the remaining power of the battery pack 4 is low, When the alarm value is reached, the sub-controller 2 feeds back the alarm signal to the main controller 1 through the wireless network, and the main controller 1 sends the alarm information through the car display terminal.

If the driver does not notice that the remaining power information of the battery pack 4 is lower than the threshold, it may cause the main instrument panel or the sub-controller 2 to stop working due to lack of power. Therefore, the battery pack 4 is also equipped with a power alarm device. The power alarm device is connected to the sub-controller 2 through the connection harness 3, and the threshold value of the remaining power information of the battery pack 4 is set in the sub-controller 2, that is, the alarm value. If the remaining power of the battery pack 4 is lower than the alarm value, the driver needs to be reminded to charge the battery pack 4 in time or replace the battery pack 4 with electricity. The alarm information issued by the battery alarm device includes but is not limited to highlighting or flashing of part of the display content, whistle or voice prompts, etc.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and are not intended to limit the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims

A vehicle-mounted battery system controlled through a wireless network, characterized in that it includes a main controller arranged in the vehicle, at least one battery pack arranged in the vehicle body, and a sub-controller connected to the battery pack. The main controller The controller performs data and signal transmission with the sub-controller through the wireless network.
The vehicle-mounted battery system controlled through a wireless network according to claim 1, wherein the battery pack includes a battery core, a battery management module, a battery tray and a battery cover, and the battery tray is fixedly or integrally connected to the vehicle body, The battery core is arranged on the battery tray, the battery cover covers the battery core, and the battery management module is connected to the sub-controller.
The vehicle-mounted battery system controlled through a wireless network according to claim 2, wherein the battery management module is connected to the battery core and is used to control charging or discharging or power-off of the battery core.
The vehicle-mounted battery system controlled through a wireless network according to claim 2, wherein the battery pack further includes a heat dissipation module, and the heat dissipation module is connected to the sub-controller through a wireless network.
The vehicle battery system controlled through a wireless network according to claim 1, wherein the main controller includes a wireless transmitting unit, the sub-controller includes a wireless receiving unit, and the output end of the main controller is connected to the wireless transmitting unit. The wireless transmitting unit is connected to and sends control signals through the wireless network, and the input end of the sub-controller is connected to the wireless receiving unit and receives the control signals.
The vehicle battery system controlled through a wireless network according to claim 1, wherein the main controller includes a wireless receiving unit, the sub-controller includes a wireless transmitting unit, and the output end of the sub-controller is connected to the wireless transmitting unit. The wireless transmitting unit is connected to and sends status information through the wireless network, and the input end of the main controller is connected to the wireless receiving unit and receives the status information.
The vehicle-mounted battery system controlled through a wireless network according to claim 5 or 6, characterized in that the wireless transmitting unit further includes an encryption module, and the output terminals of the main controller and the sub-controller pass through the encryption module. The module is connected to the wireless transmitting unit, and the encryption module encrypts the control signal or status information; the wireless receiving unit includes a decryption module, and the input terminals of the main controller and the sub-controller pass through the decryption module. The module is connected to the wireless receiving unit, and the decryption module decrypts the received control signal or status information.
The vehicle-mounted battery system controlled through a wireless network according to claim 1, further comprising a mobile control terminal, the mobile control terminal is connected to the sub-controller through the wireless network, and the sub-controller connects the sub-controller to the sub-controller through the wireless network. The status information is fed back to the mobile control terminal.
The vehicle battery system controlled through a wireless network according to claim 1, wherein the sub-controller is equipped with a power monitoring device, the power monitoring device can monitor the remaining power of the battery pack, and the power monitoring device It is electrically connected to the battery pack and the sub-controller, and feeds back the remaining power information of the battery pack to the sub-controller.
The vehicle-mounted battery system controlled through a wireless network according to claim 9, characterized in that the sub-controller is equipped with a power alarm device, the power alarm device is electrically connected to the sub-controller, and the sub-controller contains Set an alarm value for the remaining power of the battery pack. When the remaining power of the battery pack is lower than the alarm value, the sub-controller will feedback the alarm signal to the main controller through the wireless network, and the main controller will The controller sends alarm information through the car display terminal.