CN-122025976-A - Battery pack, vehicle and battery pack monitoring method

Abstract

The invention provides a battery pack, a vehicle and a battery pack monitoring method, and relates to the technical field of vehicles; the shell is filled with composite gas, the composite gas comprises inert gas and alkaline gas, a hydrogen sulfide remover is arranged at the bottom of the shell, and a hydrogen sulfide gas sensor is arranged in the shell. The shell is filled with composite gas, inert gas can isolate oxygen and steam, hydrogen sulfide gas is prevented from being generated by contact of sulfide with the oxygen and the steam, alkaline gas can be subjected to neutralization reaction with the hydrogen sulfide gas, the hydrogen sulfide remover can be subjected to neutralization reaction with the hydrogen sulfide gas, generation of the hydrogen sulfide gas is reduced, and leakage of the hydrogen sulfide gas to the outside of the shell is prevented. The hydrogen sulfide gas sensor can timely detect that the concentration of hydrogen sulfide gas in the shell is greater than a threshold value and send an alarm signal for a user to prompt the user, so that leakage of hydrogen chloride gas which does not occur timely in treatment is prevented, and the safety of the battery pack can be improved.

Inventors

• XUE YUQING
• ZHANG FANG

Assignees

• 奇瑞汽车股份有限公司

Dates

Publication Date

20260512

Application Date

20260323

Claims (10)

1. 1. A battery pack characterized by comprising a case (10) and a hydrogen sulfide gas sensor (50); the shell (10) is filled with composite gas (30), wherein the composite gas (30) comprises inert gas and alkaline gas, and a hydrogen sulfide remover (40) is arranged at the bottom of the shell (10); the hydrogen sulfide gas sensor (50) is disposed within the housing (10).
2. 2. The battery pack according to claim 1, wherein the hydrogen sulfide gas sensor (50) is provided at the bottom of the case (10).
3. 3. The battery pack according to claim 2, wherein the battery pack (1) further comprises an all-solid-state battery (20) and a base (60); The base (60) is arranged in the shell (10), the all-solid-state battery (20) is arranged above the base (60), the hydrogen sulfide remover (40) is arranged below the base (60), and the base (60) is provided with ventilation holes.
4. 4. The battery pack according to claim 1, wherein the alkaline gas is present in the composite gas (30) in a volume ratio of 1-5%.
5. 5. The battery pack according to claim 1, wherein the inert gas is nitrogen, helium or argon, and the alkaline gas is ammonia or an amine gas.
6. 6. The battery pack according to claim 1, wherein the hydrogen sulfide remover (40) comprises a hydrogen sulfide gas adsorbent and/or an alkaline substance.
7. 7. The battery pack of claim 6, wherein the hydrogen sulfide gas adsorbent is activated carbon, silica gel, zeolite, or metal oxide; The alkaline substance is sodium carbonate, lithium carbonate, magnesium carbonate, calcium carbonate, sodium hydroxide, manganese hydroxide, calcium oxide or magnesium oxide.
8. 8. The battery pack according to claim 1, wherein the battery pack (1) further comprises a control module (73) and a notification module (74); the hydrogen sulfide gas sensor (50) and the notification module (74) are respectively connected with the control module (73), and when the concentration of the hydrogen sulfide gas detected by the hydrogen sulfide gas sensor (50) is greater than a threshold value, the control module (73) controls the notification module (74) to send a notification signal.
9. 9. A vehicle characterized by comprising a battery pack (1) according to any one of claims 1-8.
10. 10. A battery pack monitoring method for monitoring a battery pack (1) according to any one of claims 1-8, comprising the steps of: Detecting the concentration of hydrogen sulfide gas in the housing (10); the hydrogen sulfide gas concentration in the case (10) is compared with a threshold value, and when the hydrogen sulfide gas concentration in the case (10) is greater than the threshold value, a battery abnormality notification is issued.

Description

Battery pack, vehicle and battery pack monitoring method Technical Field The invention relates to the technical field of vehicles, in particular to a battery pack, a vehicle and a battery pack monitoring method. Background In a sulfide-based all-solid-state battery, sulfur-containing compounds easily react with water vapor in the air that intrudes into the case, and toxic gases such as hydrogen sulfide are generated, which threatens safety of personnel and the environment. In the prior art, a hydrogen sulfide gas adsorption structure is arranged in some battery packs, and hydrogen sulfide in the battery packs is adsorbed through the adsorption structure. The above-mentioned mode relies on physical adsorption, and is limited to hydrogen sulfide gas's removal efficiency, and after hydrogen sulfide gas adsorption structure's adsorption capacity reached saturation, the hydrogen sulfide gas in the battery package can't be adsorbed, if untimely processing can lead to hydrogen sulfide gas leakage, causes the security of battery package not good. Disclosure of Invention The invention aims to provide a battery pack so as to solve the technical problem that the safety of the battery pack in the prior art is poor. The battery pack provided by the invention comprises a shell and a hydrogen sulfide gas sensor; the shell is filled with composite gas, wherein the composite gas comprises inert gas and alkaline gas, and a hydrogen sulfide remover is arranged at the bottom of the shell; The hydrogen sulfide gas sensor is disposed within the housing. Further, the hydrogen sulfide gas sensor is arranged at the bottom of the shell. Further, the battery pack further comprises an all-solid-state battery and a base; The base is arranged in the shell, the all-solid-state battery is arranged above the base, the hydrogen sulfide remover is arranged below the base, and the base is provided with ventilation holes. Further, the volume ratio of the alkaline gas in the composite gas is 1% -5%. Further, the inert gas is nitrogen, helium or argon, and the alkaline gas is ammonia or amine gas. Further, the hydrogen sulfide remover includes a hydrogen sulfide gas adsorbent and/or an alkaline substance. Further, the hydrogen sulfide gas adsorbent is activated carbon, silica gel, zeolite or metal oxide; The alkaline substance is sodium carbonate, lithium carbonate, magnesium carbonate, calcium carbonate, sodium hydroxide, manganese hydroxide, calcium oxide or magnesium oxide. Further, the battery pack also comprises a control module and a notification module; The hydrogen sulfide gas sensor and the notification module are respectively connected with the control module, and when the concentration of the hydrogen sulfide gas detected by the hydrogen sulfide gas sensor is greater than a threshold value, the control module controls the notification module to send a notification signal. The invention also aims to provide a vehicle which comprises the battery pack. The invention also provides a battery pack monitoring method for monitoring the battery pack provided by the invention, which comprises the following steps: Detecting the concentration of hydrogen sulfide gas in the housing; And comparing the concentration of the hydrogen sulfide gas in the shell with a threshold value, and sending out a battery abnormality notification when the concentration of the hydrogen sulfide gas in the shell is larger than the threshold value. The battery pack comprises a shell and a hydrogen sulfide gas sensor, wherein the shell is filled with composite gas, the composite gas comprises inert gas and alkaline gas, a hydrogen sulfide remover is arranged at the bottom of the shell, and the hydrogen sulfide gas sensor is arranged in the shell. The shell is filled with composite gas, inert gas can isolate oxygen and steam, hydrogen sulfide gas is generated by contact of sulfide with the oxygen and the steam, alkaline gas can perform neutralization reaction with the hydrogen sulfide gas, hydrogen sulfide gas is reduced, hydrogen sulfide remover can perform neutralization reaction with the hydrogen sulfide gas, hydrogen sulfide gas is reduced, and leakage of the hydrogen sulfide gas to the outside of the shell is prevented. The hydrogen sulfide gas sensor can detect the concentration of the hydrogen sulfide gas in the shell in real time, and when the removal capacity of the composite gas and the hydrogen sulfide remover to the hydrogen sulfide gas reaches saturation, the hydrogen sulfide gas sensor can timely detect that the concentration of the hydrogen sulfide gas in the shell is greater than a threshold value and send an alarm signal to a user so as to prompt the user, thereby preventing leakage of the hydrogen sulfide gas which does not occur timely during treatment and improving the safety of the battery pack. Drawings In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are neede