Device for preventing water from entering battery pack and vehicle

Abstract

The utility model discloses a device for preventing water from entering a battery pack and a vehicle, and belongs to the field of new energy vehicles. Comprising a water level sensor, an MCU, a battery management system, a power control unit and a battery pack, the water level sensor is connected with the MCU, and the MCU is connected with the battery management system; the battery management system is connected with the power control unit; and the battery pack is respectively connected with the battery management system and the power control unit. The water level sensor is installed to monitor the current water level in real time, meanwhile, the MCU judges whether the current water level has the risk of water inflow of the battery pack or not, and the battery management system and the power control unit are informed in time when the risk of water inflow exists, so that corresponding protection measures are taken, and water inflow is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of new energy vehicles, and specifically, the utility model relates to a battery pack water prevention device and vehicle. BACKGROUND

[0002] At present, new energy vehicles are increasing, and power battery packs, as the most important part of new energy vehicles, also need to be improved in the technical field, and the safety technology field is the most important for battery packs. Nowadays, new energy vehicles are almost the same as traditional fuel vehicles, but the safety technology field of power battery packs is not perfect enough.

[0003] In the prior art, detection is often carried out after water enters the battery pack, and the driver is notified after water enters, instead of preventing water from entering in advance, which may cause irreversible damage to the vehicle and the driver. Although there are waterproof designs such as sealing tape and sealing ring, they cannot be safer and more reliable as the safety guarantee of the battery pack. For example, the publication number is CN222318347U, the publication date is 2025-01-07, and the patent name is "water detection circuit": the utility model discloses a water detection circuit. The water detection circuit comprises a waterproof detection terminal, a waterproof detection module, a switch module, a wake-up module and a main control module; the switch module is connected between the waterproof detection terminal and the waterproof detection module; the waterproof detection module and the switch module are also connected with the main control module; the battery pack comprises a first electrode and a second electrode, the wake-up module is connected with the first electrode or the second electrode of the battery pack, and the wake-up module is connected with the main control module. The technical scheme provided by the utility model embodiment, the main control module controls the output loop of the battery pack to be disconnected according to the second water signal, so that the current path between the first electrode and the second electrode of the battery pack is disconnected, and the electrolytic corrosion of the first electrode and the second electrode of the battery pack can be avoided.

[0004] Therefore, the application provides a battery pack water prevention device and vehicle. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of the prior art and provides a battery pack water prevention device and vehicle to achieve the following purposes: by installing a water level sensor, the current water level is monitored in real time, at the same time, the MCU judges whether there is a risk of water entering the battery pack, and notifies the battery management system and the power control unit in time when there is a risk of water entering, so as to take corresponding protection measures to prevent water from entering.

[0006] In order to achieve the above object, the utility model adopts the technical scheme, which is a battery pack water prevention device, the device includes water level sensor, MCU, battery management system, power control unit, battery pack, wherein: the water level sensor is connected with the MCU, is used for detecting the distance of current water level and water level sensor installation position;The MCU is connected with the battery management system;The battery management system is connected with the power control unit;The battery pack is connected with the battery management system, power control unit respectively.

[0007] Preferably, the water level sensor is arranged at the bottom of the battery pack.

[0008] Preferably, the device further includes an alarm unit, and the alarm unit is connected with the power control unit;

[0009] Preferably, the alarm unit includes a vehicle-mounted display screen, and the vehicle-mounted display screen is connected with the power control unit, for alarming the user and receiving the operation feedback of the user.

[0010] Preferably, the alarm unit includes a remote communication unit TBOX, and the power control unit is connected with the user mobile terminal through the TBOX, for remotely alarming the user and receiving the operation feedback of the user.

[0011] Meanwhile, the application further provides a vehicle according to the above battery pack water prevention device.

[0012] The utility model discloses the technical effect is: the utility model discloses the real-time water level detected by water level sensor is sent to MCU to judge the water risk, and the communication of MCU and battery management system is established, to send the result of judgment to battery management system and power control unit, can quickly and accurately transmit the water risk signal, prevents the water hazard of battery pack in advance.

[0013] The utility model discloses the whole simple structure, is convenient for installation and identification. The application fully considers the user's wishes, when there is water risk, the user can judge whether to terminate the battery pack work according to oneself wishes while alarming the user. ACCURATELY

[0014] Figure 1 It is a battery pack water prevention device structure diagram of the utility model embodiment. CONCRETE IMPLEMENTING METHOD

[0015] The specific embodiments of the utility model are further explained in detail below with reference to the drawings and the description of the embodiments, which aims to help the skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical scheme of the utility model, and to help its implementation. It should be noted that the "first", "second" and other words in the present application are only for the convenience of describing the technical scheme to distinguish different components, and do not limit the present application. In order to make the technical scheme of the utility model more clear, the utility model is explained and described by the following embodiments.

[0016] The embodiment discloses a kind of battery pack water prevention device, as shown in Figure Figure 1 The device includes water level sensor, MCU (microcontroller), battery management system (BMS), power control unit (PCU), battery pack.

[0017] Wherein: the water level sensor is connected with the MCU, for detecting the distance between current water level and the installation position of water level sensor and sending to MCU, and MCU can judge whether battery pack has water risk according to water level information.

[0018] The MCU is connected with the battery management system by a water prevention signal communication line.The water level information obtained by MCU and water risk judgment result are all sent to the battery management system by the water prevention signal communication line.

[0019] The battery management system is connected with the power control unit;The battery pack is connected with the battery management system and power control unit respectively.Battery management system sends control signal to battery pack according to current water level information and water risk judgment result, especially when there is water risk, battery management system controls the charge-discharge process of battery pack to stop.Battery management system also forwards the current water level information and water risk judgment result received to power control unit, and correspondingly, when there is water risk, power control unit controls to stop operating battery pack, so as to prevent the damage to automobile after battery pack is waterlogged.

[0020] In the embodiment, the MCU is provided with a first distance threshold value.When the distance from the installation position of water level sensor to the current vehicle wading water level is greater than the first distance threshold value, it is considered that there is no water risk;When the distance from the installation position of water level sensor to the current vehicle wading water level is less than or equal to the first distance threshold value, it is considered that there is water risk, at this time, even if the current water level does not pass the battery pack, but due to vehicle jolt and other reasons, water splashes will still be caused to cause battery pack to be waterlogged. Specifically, the water level sensor is arranged at the bottom of the battery pack in the embodiment, at this time, the water level sensor detects the distance from the bottom of the battery pack to the current vehicle wading water level in real time. In specific implementation, the first distance threshold value can be flexibly set according to actual situation.

[0021] The utility model discloses a water level sensor detects the real-time water level to MCU and judges the water inflow risk, and the communication of MCU and battery management system is established to send the result of judgment to battery management system and power control unit, can transmit the water inflow risk signal quickly and accurately, and prevents the water inflow harm of battery pack in advance.

[0022] The device further comprises an alarm unit connected with the power control unit.

[0023] Specifically, the alarm unit comprises a vehicle-mounted display screen connected with the power control unit, for alarming the user and receiving the operation feedback of the user at the same time.

[0024] In addition, in a preferred embodiment of the present application, the alarm unit further comprises a remote communication unit TBOX, and the power control unit is connected with the user's mobile terminal through the TBOX, for remotely alarming the user and receiving the operation feedback of the user at the same time.

[0025] In actual situations, there may be a water inflow risk, but the user does not want to stop the battery pack from working.

[0026] The utility model discloses a whole simple structure, is convenient for installation and identification.

[0027] Meanwhile, the present application further provides a vehicle comprising the battery pack water inflow prevention device.

[0028] The utility model has been described exemplarily above in combination with the drawings. Apparently, the utility model is not limited by the above-mentioned mode in the specific implementation. As long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model; or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A battery pack water ingress prevention device, characterized in that: The device comprises a water level sensor, an MCU, a battery management system, a power control unit and a battery pack, wherein the water level sensor is connected to the MCU and used to detect the distance between the current water level and the installation position of the water level sensor; the MCU is connected to the battery management system; the battery management system is connected to the power control unit; and the battery pack is connected to the battery management system and the power control unit respectively. 2.The water-preventing device for a battery pack according to claim 1, wherein: The water level sensor is arranged at the bottom of the battery pack. 3.The water-preventing device for a battery pack according to claim 1, wherein: The device further comprises an alarm unit connected to the power control unit.

4. The water-preventing device for a battery pack according to claim 3, characterized by: The alarm unit comprises a vehicle-mounted display screen connected to the power control unit and used to alarm the user and receive the operation feedback of the user.

5. The water-preventing device for a battery pack according to claim 3, characterized by: The alarm unit comprises a remote communication unit TBOX, and the power control unit is connected to the user's mobile terminal through the TBOX and used to remotely alarm the user and receive the operation feedback of the user.

6. A vehicle having the water intrusion prevention device for a battery pack according to any one of claims 1 to 5, characterized by: The vehicle comprises the water-proof device for the battery pack.

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