Lithium battery multi-power-supply composite series-connection formation capacity grading device
A lithium battery, multi-power supply technology, applied in the direction of battery disconnect circuit, battery circuit device, secondary battery charging/discharging, etc., can solve the problem that the power line cannot be guaranteed to be consistent, the voltage and current accuracy cannot be guaranteed to be completely consistent, and the Battery cell capacity consistency requirements and other issues, to achieve the effect of improving capacity consistency, suppressing current mutation peaks, and uniform current and voltage
Pending Publication Date: 2021-06-22
时代一汽动力电池有限公司
View PDF0 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, due to the inevitable differences in each output channel of the constant current power supply in the existing chemical conversion equipment, the accuracy of the voltage and current between the channels cannot be guaranteed to be completely consistent, and the power lines between the channels cannot be guaranteed to be completely consistent. Relying on the unified control of charge and discharge time cannot meet the consistency requirements of lithium battery cell capacity in batch formation, and needs continuous improvement
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
[0023] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0024] see Figure 1-2 As shown, a lithium battery multi-power supply complex serialization capacity equipment, including a formation main power supply module 1 connected to the formation control system control and two or more lithium battery formation bypass boards 2, more than two lithium batteries Formation bypass boards 2 are connected in series, and the two ends of the series bypass boards are connected to the two output terminals of the formation main power supply module 1, and each of the lithium battery formation bypass boards 2 is individually controlled and connected to a battery to be formed. Lithium battery cell 3, said lithium battery formation bypass board 2 is provided with MCU main control unit, battery monitoring unit and bypass switch circuit, said MCU main control unit respectively controls and connects said formation main pow...
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 discloses a lithium battery multi-power-supply composite series-connection formation capacity grading device which comprises a formation main power supply module in control connection with a formation control system and more than two lithium battery formation bypass plates, and the two ends of the more than two lithium battery formation bypass plates are connected with the output end of the formation main power supply module after being connected in series, each lithium battery formation bypass plate is independently connected with a lithium battery cell to be formed, and an MCU main control unit, a battery monitoring unit and a bypass switch circuit are arranged in the lithium battery formation bypass plate. The bypass switch circuit is connected with the two ends of the lithium battery cell in parallel and is used for switching on a bypass after a lithium battery breaks down, and the two ends of each lithium battery cell are also connected in parallel with an auxiliary power supply module capable of providing independent constant voltage and independent discharge for the lithium battery cell. According to the invention, the uniform and consistent current and voltage of the lithium battery cell during formation can be better ensured, and the capacity consistency of the lithium battery cell after formation can be greatly improved.
Description
technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a lithium battery multi-power source composite serialized storage capacity device. Background technique [0002] In the production process of lithium battery cells, it is necessary to use chemical conversion equipment to perform chemical conversion treatment on lithium battery cells. Formation refers to the process of activating its internal positive and negative electrode materials through a certain charging and discharging method to improve the charging and discharging performance, self-discharging, storage and other comprehensive performance of lithium batteries. [0003] The formation equipment in the prior art usually uses a parallel power supply circuit to provide a constant current power supply to perform formation treatment on lithium battery cells. During the processing, multiple lithium battery cells are connected in parallel with the power supply. O...
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): H01M10/44H02J7/00
CPCH01M10/446H02J7/0016H02J7/0019H02J7/0029H02J7/0031H02J7/0068H02J7/007182Y02E60/10
Inventor 何贤兵
Owner 时代一汽动力电池有限公司