System and method for detecting liquid level of flooded storage battery pack
A technology for liquid level detection and battery pack, which is applied to battery pack components and displays liquid level indicators and circuits through pressure measurement. It can solve problems such as no significant guiding significance, and achieve high achievability and strong feasibility , the effect of price economy
Pending Publication Date: 2022-01-21
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Flooded batteries refer to the charging and discharging control technology of lithium-ion batteries, and propose the concept of battery management system, which monitors battery voltage, current and temperature, and evaluates and calibrates batteries through battery state of charge (SOC) and state of health (SOH) The remaining capacity and state of health, but there is no significant guiding significance for the replenishment cycle of flooded batteries, especially nickel-cadmium batteries
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0057] At present, the liquid level detection technology has not been popularized in the battery products of rail transit vehicles. The visual observation method and the liquid level tube method are mostly used to measure the liquid level of the battery. Other methods include the method of replenishing the battery with a centralized water injection system. But this method still can't judge whether the battery is poor, and can only use the water injection machine to replenish the battery according to the maintenance interval.
[0058] refer to figure 1 and figure 2 , according to the integrated position of the liquid level detection host 3, it is divided into two detection methods: vehicle type and ground type:
[0059] Method 1: The vehicle-mounted liquid level detection method includes a battery box 6, a battery pack, a battery tray 7, a pressure sensor 2 and a connector 5;
[0060] The liquid level detection host 3 is used to collect the pressure signal of the pressure se...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a liquid level detection system for a flooded storage battery pack. The liquid level detection system comprises a liquid level detection host, a storage battery box tray, a pressure sensor and a connector. According to the invention, the position of the liquid-deficient battery in the battery pack can be efficiently and accurately detected. The main principle is as follows: weight change is caused according to liquid level change in a battery pack, wherein the maximum liquid level and overflow alarm of the battery are set according to the maximum liquid level, and the suggested liquid supplementing liquid level and low liquid level alarm are set according to the minimum liquid level. Compared with capacitive and ultrasonic liquid level detection technologies, the method has the advantages of high realizability, simplicity in operation and maintenance, low price and the like, and has higher feasibility.
Description
technical field [0001] The invention relates to the field of rail transit auxiliary power supply systems, in particular to a liquid level detection system and method for a liquid-rich storage battery pack. Background technique [0002] Liquid-rich secondary batteries represented by nickel-cadmium batteries are widely used in the rail transit industry. According to statistics on the application of domestic rail transit vehicle batteries, more than 80% of rail transit vehicles use nickel-cadmium batteries as on-board secondary batteries. Provide emergency power supply for vehicles without external power supply. [0003] Nickel-cadmium batteries are mainly composed of seven parts: plate, lug, pole, diaphragm, shell, shell cover and liquid injection plug. According to the application environment and reaction characteristics of nickel-cadmium batteries, the electrolyte has natural evaporation and overcharge electrolysis. In some cases, maintenance rehydration of the battery is r...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01F23/14G01F23/18H01M50/627
CPCG01F23/14G01F23/18H01M50/627Y02E60/10
Inventor 王宇超王爽赵勤坤崔宪伟
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD