A vehicle-mounted BMS battery system

Abstract

The application discloses a kind of vehicle-mounted BMS battery systems, belongs to BMS battery system field, and its technical scheme main points include shell and BMS control panel, shell is sequentially provided with several partitions from outside to inside, and adjacent two partitions form separate cavity, and the innermost partition forms the holding cavity for installing BMS control panel, BMS control panel is provided with rubber waterproof joint, and the partition is provided with the mouth, and several humidity sensors are provided in the separate cavity, and the holding cavity is provided with water immersion detection controller, and water immersion detection controller is identified and automatically numbered to several humidity sensors, the sealing cover plate for sealing shell is provided on the shell, so that separate cavity, holding cavity form airtight space, the application has the effect of efficient prevention of water into BMS battery system inside, and after water enters BMS battery system inside, it has a first water immersion detection alarm function and a second water immersion detection forced stop function, to achieve the effect of efficient waterproof and water immersion self-checking and alarm.

Description

Technical Field

[0001] This application relates to the field of BMS battery systems, and more specifically to an on-board BMS battery system. Background Technology

[0002] A Battery Management System (BMS), commonly known as a battery nanny or battery manager, is primarily designed for the intelligent management and maintenance of individual battery cells. It monitors battery status, prevents overcharging and over-discharging, and extends battery life. A BMS unit includes a BMS management system, a control module, a display module, a wireless communication module, electrical equipment, a battery pack supplying power to the electrical equipment, and a data acquisition module for collecting battery information. The BMS connects to the wireless communication module and display module via communication interfaces. The output of the data acquisition module connects to the input of the BMS, and the output of the BMS connects to the input of the control module. The control module connects to the battery pack and electrical equipment. The BMS connects to the server via a wireless communication module.

[0003] Currently, vehicle-mounted BMS battery systems are widely used and installed in electric vehicles of various brands. The waterproof performance of both the BMS battery system and the battery module in an electric vehicle is crucial. However, most vehicle-mounted BMS battery systems have poor waterproof performance and lack immersion self-test functions. This can easily lead to a series of short circuit problems caused by water immersion in the internal circuit of the BMS battery system, which seriously affects the use of the electric vehicle. When water enters the BMS battery system and causes a short circuit while the vehicle is in motion, it can easily cause a serious safety accident.

[0004] In view of this, the inventors have designed a BMS battery system with high waterproof performance and a water immersion self-test function with alarm. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an on-board BMS battery system. Its advantages are that it effectively prevents water from entering the BMS battery system, and after water enters the BMS battery system, it has a first-level immersion detection alarm function and a second-level immersion detection forced shutdown function, thereby achieving the advantages of highly effective waterproofing and immersion self-check and alarm.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vehicle-mounted BMS battery system, comprising a housing and a BMS control board. The housing is provided with a plurality of partition rings arranged sequentially from the outside to the inside. Two adjacent partition rings form a partition cavity, and the innermost partition ring forms an independent housing cavity for mounting the BMS control board. The BMS control board is provided with a rubber waterproof connector extending from the housing cavity to the outside of the housing. The partition rings are provided with clearance openings that are interference-fitted with the rubber waterproof connector. A plurality of humidity-sensitive resistors for detecting ambient humidity are arranged within the partition cavity and along its extending direction. A water immersion detection controller, electrically connected to the humidity-sensitive resistors and used to issue alarm signals and control the operation of the BMS control board, is provided within the housing cavity. The water immersion detection controller automatically identifies and numbers the humidity-sensitive resistors. A sealing cover is provided on the housing to seal the housing and create a sealed space between the partition cavity and the housing cavity.

[0007] By adopting the above technical solution, a partition cavity is formed by several baffle rings to prevent water from entering the holding cavity formed by the innermost baffle ring. The interference fit between the rubber waterproof joint and each clearance port achieves a strong seal, and the moisture content in the partition cavity is monitored by humidity-sensitive resistors. When water breaks through the outermost baffle ring and enters the outermost partition cavity, the humidity-sensitive resistors arranged in the partition cavity detect the change in humidity and transmit the information to the water immersion detection controller. The water immersion detection controller transmits the signal to the vehicle control system through the BMS control board for warning and its own alarm prompts. As water gradually breaks through each baffle ring, the humidity-sensitive resistors in each partition cavity... The detection information can be transmitted to the immersion detection controller. After water enters each compartment and is detected by the corresponding humidity sensor, the immersion detection controller will issue a prompt. After water enters the innermost compartment, the corresponding humidity sensor will transmit the detection signal to the immersion detection controller. The immersion detection controller can then transmit the signal to the BMS control board, which in turn transmits the signal to the vehicle control system. The traditional control system will then provide a reasonable stop and inspection prompt and issue an emergency warning to stop the BMS control board within a specified time. The BMS control board will stop operating within the specified time and transmit the signal to the mobile platform via network for further notification.

[0008] In summary, the aforementioned partitioned cavity formed by the main channel partition ring is used to prevent water from entering the holding cavity formed by the innermost partition ring. The interference fit between the rubber waterproof joint and each clearance port achieves a strong seal. The moisture-sensitive resistor, immersion detection controller, and BMS control board form a self-detection, alarm prompt, and reasonable braking system, thereby achieving the purpose of efficient waterproofing and immersion self-check and alarm.

[0009] The present invention is further configured such that: a placement groove extending along its extension direction is provided at the bottom of the partition cavity, and water-absorbing cotton for measuring moisture is provided in the placement groove, and the moisture-sensitive resistor is in close contact with the water-absorbing cotton.

[0010] By adopting the above technical solution, when water enters the partition cavity, it flows onto the absorbent cotton on the placement tank. Due to the characteristics of the absorbent cotton, it can quickly absorb the water. When the water on the absorbent cotton flows onto the humidity-sensitive resistor that is closely attached to the absorbent cotton, it can be detected by the humidity-sensitive resistor and a warning information can be transmitted.

[0011] The present invention is further configured such that the bottom of the partition rings on both sides of the partition cavity is rounded.

[0012] By adopting the above technical solution, the bottom of the baffle rings on both sides of the partition cavity is rounded, which allows water to flow along the arc corner onto the absorbent cotton in the placement groove, making it easier to guide the water onto the absorbent cotton.

[0013] The present invention is further configured such that: the immersion detection controller includes a control motherboard, a timer set on the control motherboard, a buzzer set on the control motherboard, and an Internet of Things module set on the control motherboard and connected to the mobile platform network; the control motherboard is electrically connected to the BMS control board and several humidity-sensitive resistors.

[0014] By adopting the above technical solution, when the humidity-sensitive resistors in the partitions other than the innermost partition cavity detect water and transmit the information to the immersion detection controller, the control motherboard processes the received information and transmits it to the BMS control board and the IoT module. The BMS control board then transmits the signal to the vehicle control system for alert, and the IoT module transmits the information to the mobile platform via the network for alert. When the humidity-sensitive resistor in the innermost partition cavity detects water and transmits the information to the immersion detection controller, the control motherboard transmits the signal to the buzzer, which sounds an alarm. The control board also transmits the signal to the timer, the IoT module, and the BMS control board. The IoT module and the BMS control board then issue warnings, while the timer receives the signal and counts down. After the countdown ends, it transmits the signal to the control motherboard, which then transmits the signal to the BMS control board to stop operation.

[0015] The present invention is further configured such that: the control main board is provided with a rubber adapter extending to any partition cavity and electrically connected to the humidity-sensitive resistor on the corresponding partition cavity, and the partition ring is provided with a clearance opening that is interference-fitted with the rubber adapter.

[0016] By adopting the above technical solution, the connection between the control board and the humidity-sensitive resistor is made of rubber adapter, and the rubber adapter is interference-fitted with the corresponding clearance port, which can effectively seal the connection and prevent water from entering the control board.

[0017] The present invention is further configured such that: the sealing cover plate is provided with a relief groove that fits into the upper end of the partition ring, and the relief groove is provided with a sealing water-blocking strip that is pressed and fitted into the upper end of the partition ring.

[0018] By adopting the above technical solution, the setting of the relief groove allows the upper end of the partition ring to be embedded in the sealing cover plate, forming an effective seal. Furthermore, the upper end of the partition ring presses against the sealing water-blocking strip in the relief groove, causing the sealing water-blocking strip to deform and further enhancing the sealing performance.

[0019] In summary, this utility model has the following advantages:

[0020] 1. The partition rings of the main channel form a separation cavity to prevent water from entering the holding cavity formed by the innermost partition ring. The interference fit between the rubber waterproof joint and each clearance port achieves a strong seal. The moisture-sensitive resistor, water immersion detection controller, and BMS control board form a self-detection, alarm prompt, and reasonable braking system, thereby achieving the purpose of efficient waterproofing and water immersion self-detection and alarm.

[0021] 2. The rounded corners at the bottom of the baffle rings on both sides of the partition cavity allow water to flow along the arc corners onto the absorbent cotton in the placement groove, making it easier to direct the water onto the absorbent cotton.

[0022] 3. By setting a relief groove, the upper end of the partition ring can be embedded in the sealing cover plate to form an effective seal. Furthermore, the upper end of the partition ring presses against the sealing water-blocking strip in the relief groove, which can deform the sealing water-blocking strip and further enhance the sealing performance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0024] Figure 2 This is a schematic diagram of the structure of this embodiment, omitting the sealing cover and the sealing water-blocking strip;

[0025] Figure 3 This is a cross-sectional structural diagram of this embodiment;

[0026] Figure 4 This is a schematic diagram illustrating the working principle of this embodiment.

[0027] Explanation of reference numerals in the attached drawings: 1. Housing; 2. BMS control board; 3. Spacer ring; 4. Separating cavity; 5. Holding cavity; 6. Rubber waterproof joint; 7. Leaving port; 8. Moisture-sensitive resistor; 9. Immersion detection controller; 10. Sealing cover plate; 11. Placement groove; 12. Water-absorbing cotton; 13. Rubber adapter; 14. Leaving groove; 15. Sealing water-blocking strip. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] A vehicle-mounted BMS battery system, such as Figure 1 , 2 As shown, the device includes a housing 1 and a BMS control board 2. The housing 1 has three partition rings 3 extending from the outside in. Two adjacent partition rings 3 form annular partition cavities 4. The innermost partition ring 3 forms an independent housing cavity 5 for mounting the BMS control board 2. The BMS control board 2 is fitted with a rubber waterproof connector 6 extending from the housing cavity 5 to the outside of the housing 1. The three partition rings 3 have clearance openings 7 that are interference-fitted with the rubber waterproof connector 6. The compression between the rubber waterproof connector 6 and the clearance openings 7 forms a strong seal. The partition cavity 4 contains, along its extending direction, a... The container is equipped with several humidity-sensitive resistors 8 for detecting ambient humidity. The immersion detection controller 9 is installed in the holding cavity 5, which is electrically connected to the humidity-sensitive resistors 8 and is used to issue alarm signals and control the operation of the BMS control board 2. The immersion detection controller 9 identifies and automatically numbers the humidity-sensitive resistors 8. The identification and automatic numbering of the humidity-sensitive resistors 8 enables the immersion detection controller 9 to accurately locate the position of the humidity-sensitive resistors 8. A sealing cover plate 10 is installed on the housing 1 to seal the housing 1 and make the partition cavity 4 and the holding cavity 5 form a closed space.

[0030] like Figure 2 , 3 As shown, a placement groove 11 extending along its extension direction is provided at the bottom of the partition cavity 4. A water-absorbing cotton 12 for moisture detection is installed inside the placement groove 11, and a humidity-sensitive resistor 8 is tightly attached to the water-absorbing cotton 12. When water enters the partition cavity 4, it flows onto the water-absorbing cotton 12 in the placement groove 11. Due to the properties of the water-absorbing cotton 12, it can quickly absorb the water. When the water on the water-absorbing cotton 12 flows onto the humidity-sensitive resistor 8 tightly attached to it, the humidity-sensitive resistor 8 can detect it and transmit an alarm message.

[0031] Furthermore, the bottom of the baffle rings 3 on both sides of the partition cavity 4 is rounded, which allows water to flow along the arc corners onto the absorbent cotton 12 on the placement groove 11, making it easier to guide the water onto the absorbent cotton 12.

[0032] like Figure 3 As shown, the sealing cover plate 10 is provided with a relief groove 14 that fits into the upper end of the partition ring 3. The relief groove 14 is provided with a sealing water-blocking strip 15 that is pressed and fitted into the upper end of the partition ring 3, so that the upper end of the partition ring 3 can be embedded into the sealing cover plate 10 to form an effective seal. Furthermore, the upper end of the partition ring 3 presses against the sealing water-blocking strip 15 in the relief groove 14, which can deform the sealing water-blocking strip 15 and further enhance the sealing performance.

[0033] like Figure 4As shown, the water immersion detection controller 9 includes a control motherboard, a timer mounted on the control motherboard, a buzzer mounted on the control motherboard, and an IoT module mounted on the control motherboard and connected to the mobile platform network. The control motherboard is electrically connected to the BMS control board 2 and several humidity-sensitive resistors 8. When the humidity-sensitive resistors 8 in the partitions 4 other than the innermost partition 4 detect water and transmit the information to the water immersion detection controller 9, the control motherboard processes the received information and transmits it to the BMS control board 2 and the IoT module. The BMS control board 2 then transmits the signal to the vehicle control system for alert, and the IoT module transmits the information to the mobile platform via the network for alert. When the humidity-sensitive resistor 8 in the innermost partition 4 detects water and transmits the information to the water immersion detection controller 9, the control motherboard transmits the signal to the buzzer, which sounds an alarm. The control board also transmits the signal to the timer, the IoT module, and the BMS control board 2. The IoT module and the BMS control board 2 then issue warnings. The timer receives the signal and counts down. After the countdown ends, it transmits the signal to the control motherboard, which then transmits the signal to the BMS control board 2 to stop operation.

[0034] Furthermore, a rubber adapter 13 is installed on the control main board, extending to any of the partition chambers 4 and electrically connected to the humidity-sensitive resistor 8 on the corresponding partition chamber 4. A clearance opening 7 is provided on the partition ring 3 to allow for an interference fit with the rubber adapter 13. By using the rubber adapter 13 to connect the control main board and the humidity-sensitive resistor 8, and by ensuring an interference fit between the rubber adapter 13 and the corresponding clearance opening 7, a seal can be effectively achieved, preventing water from entering the control main board.

[0035] The working process and beneficial effects of this utility model are as follows:

[0036] A series of baffle rings 3 form a partition cavity 4 to prevent water from entering the innermost baffle ring 3's holding cavity 5. The interference fit between the rubber waterproof joint 6 and each clearance port 7 achieves a strong seal. Moisture-sensitive resistors 8 monitor the moisture content within the partition cavity 4. When water breaches the outermost baffle ring 3 and enters the outermost partition cavity 4, the moisture-sensitive resistors 8 distributed within the partition cavity 4 detect the humidity change and transmit the information to the immersion detection controller 9. The immersion detection controller 9 then transmits the signal through the BMS control board 2 to the vehicle control system for warning and its own alarm. As water gradually breaches each baffle ring 3, the moisture-sensitive resistors 8 within each partition cavity 4 can detect the change in humidity. The detection information is transmitted to the immersion detection controller 9. After water enters each partition chamber 4 and is detected by the corresponding humidity-sensitive resistor 8, the immersion detection controller 9 will issue a prompt. After water enters the innermost partition chamber 4, the corresponding humidity-sensitive resistor 8 will transmit the detection signal to the immersion detection controller 9. The immersion detection controller 9 can transmit the signal to the BMS control board 2. The BMS control board 2 transmits the signal to the vehicle control system. The conventional control system will give a reasonable stop inspection prompt and issue an emergency warning to stop the operation of the BMS control board 2 within a specified time. The BMS control board 2 will stop operating within a reasonable specified time and will transmit the prompt to the mobile platform via network signal.

[0037] In summary, the partition cavity 4 formed by the main channel partition ring 3 is used to prevent water from entering the holding cavity 5 formed by the innermost partition ring 3. The interference fit between the rubber waterproof joint 6 and each relief port 7 achieves a strong seal. The moisture-sensitive resistor 8, the water immersion detection controller 9, and the BMS control board 2 form a self-detection, alarm prompt, and reasonable braking system, thereby achieving the purpose of efficient waterproofing and water immersion self-detection and alarm.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle-mounted BMS battery system, comprising a housing (1) and a BMS control board (2), characterized in that: The housing (1) is provided with a plurality of partition rings (3) arranged sequentially from the outside to the inside. Two adjacent partition rings (3) form a partition cavity (4). The innermost partition ring (3) forms an independent holding cavity (5) for installing the BMS control board (2). The BMS control board (2) is provided with a rubber waterproof joint (6) extending from the holding cavity (5) to the outside of the housing (1). The partition rings (3) are provided with clearance openings (7) that are interference fit with the rubber waterproof joint (6). The partition cavity (4) is located inside and extends from the partition rings (3). A plurality of humidity-sensitive resistors (8) for detecting ambient humidity are arranged in an extending direction. A water immersion detection controller (9) is provided in the holding cavity (5) and is electrically connected to the plurality of humidity-sensitive resistors (8) for issuing alarm signals and controlling the operation of the BMS control board (2). The water immersion detection controller (9) identifies and automatically numbers the plurality of humidity-sensitive resistors (8). A sealing cover plate (10) is provided on the housing (1) for sealing the housing (1) and making the partition cavity (4) and the holding cavity (5) form a sealed space.

2. The vehicle-mounted BMS battery system according to claim 1, characterized in that: The bottom of the partition cavity (4) is provided with a placement groove (11) extending along its extension direction. The placement groove (11) is provided with absorbent cotton (12) for measuring moisture. The humidity-sensitive resistor (8) is in close contact with the absorbent cotton (12).

3. The vehicle-mounted BMS battery system according to claim 2, characterized in that: The bottom of the partition rings (3) on both sides of the partition cavity (4) is rounded.

4. The vehicle-mounted BMS battery system according to claim 1, characterized in that: The immersion detection controller (9) includes a control motherboard, a timer set on the control motherboard, a buzzer set on the control motherboard, and an Internet of Things module set on the control motherboard and connected to the mobile platform network. The control motherboard is electrically connected to the BMS control board (2) and several humidity-sensitive resistors (8).

5. The vehicle-mounted BMS battery system according to claim 4, characterized in that: The control board is provided with a rubber adapter (13) extending to any partition cavity (4) and electrically connected to the humidity-sensitive resistor (8) on the corresponding partition cavity (4). The partition ring (3) is provided with a clearance opening (7) that is interference-fitted with the rubber adapter (13).

6. The vehicle-mounted BMS battery system according to claim 1, characterized in that: The sealing cover plate (10) is provided with a relief groove (14) that fits into the upper end of the partition ring (3), and the relief groove (14) is provided with a sealing water-blocking strip (15) that is pressed and fitted into the upper end of the partition ring (3).

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