Battery pack protection system and vehicle

Patent metadata

Field	Value
Publication number	US-12533957-B2
Application number	US-202318310667-A
Country	US
Kind code	B2
Filing date	May 2, 2023
Priority date	Dec 23, 2020
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A battery pack protection system and a vehicle are provided. The battery pack protection system includes a battery pack and a protective plate. The battery pack includes a tray. The tray includes a frame and a bottom plate. Battery modules are arranged on the bottom plate. The protective plate is arranged parallel to the bottom plate, and the protective plate is close to a side of the bottom plate. At least one sensor is arranged on the protective plate. The protective plate is detachably connected to the frame.

First claim

What is claimed is:

1 . A battery pack protection system, comprising:
a battery pack, wherein the battery pack comprises a housing and battery modules, the housing comprises an upper cover and a tray, the upper cover is suitable for encapsulating the tray, the tray comprises a frame and a bottom plate, and the battery modules are arranged on the bottom plate; a protective plate, wherein the protective plate is arranged parallel to the bottom plate and next to a side of the bottom plate, and the protective plate is detachably connected to the frame; and a plurality of sensors, wherein at least one of the plurality of sensors is arranged on the protective plate and is configured to detect an impact force on the protective plate when impacted by an external force, wherein a plurality of groove holes are provided on a side of the protective plate next to the tray, and each of the groove holes individually hosts one of the plurality of sensors.

2 . The battery pack protection system according to claim 1 , wherein the bottom plate and the frame are integrally formed, and the protective plate and the frame are connected by bolts or rivets.

3 . The battery pack protection system according to claim 1 , wherein the plurality of sensors are distributed on the protective plate in a scattered manner; the plurality of sensors are distributed in a predetermined pattern; and the plurality of groove holes are distributed in the same predetermined pattern.

4 . The battery pack protection system according to claim 1 , wherein the sensors are arranged on a same side of the protective plate.

5 . The battery pack protection system according to claim 1 , further comprising:
a vehicle control unit, wherein the vehicle control unit is connected to the plurality of sensors, and the vehicle control unit is configured to control operation or maintenance of a vehicle in which the battery pack is located according to information detected by the sensors.

6 . The battery pack protection system according to claim 5 , wherein
the vehicle control unit is configured to control the vehicle to travel normally when receiving first detection information transmitted by the sensors; the vehicle control unit is further configured to prompt, when receiving second detection information transmitted by the sensors, a driver and a passenger of the vehicle to repair and maintain the protective plate and/or the battery pack within a preset time or within a preset vehicle travel distance; and the vehicle control unit is further configured to prompt, when receiving third detection information transmitted by the sensors, the driver and the passenger of the vehicle to stop immediately, and to repair, maintain, or replace the protective plate and/or the battery pack.

7 . The battery pack protection system according to claim 6 , wherein the sensor is formed by connecting several resistance strain gauges in series or in parallel, wherein
the first detection information is that a voltage value detected by the sensor is less than or equal to a preset safety threshold; the second detection information is that the voltage value detected by the sensor is greater than the preset safety threshold and less than or equal to a preset danger threshold, and the preset safety threshold is less than the preset danger threshold; and the third detection information is that the voltage value detected by the sensor is greater than the preset danger threshold.

8 . The battery pack protection system according to claim 1 , wherein at least one of the plurality of sensors is arranged on the frame, and the at least one sensor arranged on the frame is configured to detect an internal force between battery cells or the battery modules inside the battery pack.

9 . A vehicle, comprising the battery pack protection system according to claim 1 .

10 . The vehicle according to claim 9 , wherein the sensors are arranged in a direction towards a front of the vehicle.

11 . The vehicle according to claim 9 , wherein the sensors comprise a first sensor, a second sensor, a third sensor, and a fourth sensor, the first sensor and the second sensor are arranged on two sides of the protective plate towards a front of the vehicle, the third sensor is arranged at a middle position of the protective plate, and the fourth sensor is arranged on the protective plate towards a rear of the vehicle.

Assignees

• Byd Co Ltd

Inventors

• Wan Long
• Lu Zhipei
• Peng Qingbo
• Wu Lei

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• H01M50/242

  adapted for protecting batteries against vibrations, collision impact or swelling · CPC title

• B60L3/0046 Primary

  relating to electric energy storage systems, e.g. batteries or capacitors · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title