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FPC voltage acquisition line of energy power battery and manufacturing method

A technology of power battery and manufacturing method, which is applied in the direction of making wiring diagram of printed circuit, manufacturing of printed circuit, battery pack parts, etc. and other problems, to achieve the effect of reducing the weight and volume of the battery, improving the accuracy of voltage acquisition, and improving the energy density of the battery

Pending Publication Date: 2021-01-26
XIAMEN BOLION CIRCUIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to monitoring deviation, the power of each battery cell is inconsistent, which will reduce the battery capacity and affect the energy density of the overall battery pack and battery pack
If the monitoring abnormal deviation is large, it may cause some battery cells to be overcharged, and the hidden safety risk is extremely huge

Method used

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  • FPC voltage acquisition line of energy power battery and manufacturing method
  • FPC voltage acquisition line of energy power battery and manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 2 As shown, an FPC pressure mining line for a new energy power battery may include an FPC main body 10 , a plurality of pressure collection points 20 and a connector 30 . The FPC main body 1 can be single-sided or double-sided FPC, and its size can be determined according to the module size of the new energy power battery. The FPC main body 1 is usually large at both ends and small at the middle, similar to an I-shape. Pressure mining points 20 are arranged at both ends of the FPC main body 1, and the number thereof is set according to needs. In the illustrated embodiment, the FPC pressure line has 12 pressure points 20 . The connector 30 is welded on the PFC main body 10, and has the same number of terminals as the pressure mining point 20, and the corresponding lines etched on the FPC main body 10 (that is, the pressure mining lines L11, L12, L13 . . . ) connection, wherein each line is arranged so that its resistance is the same, that is, the line ...

Embodiment 2

[0031] The present invention also discloses a method for manufacturing the FPC mining pressure line for the above-mentioned new energy power battery, which includes the following steps:

[0032] S1. Determine the size of the FPC main body, the number of pressure points and the specifications of the connector (number of terminals) according to the module structure of the new energy power battery;

[0033] S2. Calculate the length and cross-sectional area of ​​the line according to the formula R=ρL / S, where R is the line resistance, ρ is the resistivity of the line, L is the length of the line, and S is the cross-sectional area of ​​the line. = thickness * width, so the width of the line can be obtained when the thickness is determined;

[0034] S3. Carry out wiring design on the basis of S1 and S2, so that it meets the requirement that all lines have the same resistance, that is, design the length, width and corresponding wiring mode of each line, specifically, when performing ...

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Abstract

The invention relates to an FPC voltage sampling line of a new energy power battery and a manufacturing method. The FPC voltage sampling line comprises an FPC main body; a plurality of pressure collection points which are arranged at the two ends of the FPC main body; and a connector which is welded on the PFC main body and is provided with terminals of which the number is consistent with that ofthe voltage sampling points, wherein the terminals and the voltage sampling points are connected through corresponding circuits etched on the FPC main body, and the circuits are arranged in a way thatthe resistances of the circuits are the same. According to the invention, battery equalization is carried out directly through the voltage acquisition lines, and voltage sampling and equalization double-circuit design is not needed, so the weight and size of the battery are reduced, the energy density of the battery is improved, the consistency of voltage acquisition data of the power battery isimproved, and the voltage acquisition precision is improved.

Description

technical field [0001] The invention relates to the field of flexible circuit boards, in particular to an FPC pressure mining line of a new energy power battery and a manufacturing method thereof. Background technique [0002] Flexible printed circuit board (Flexible Printed Circuit Board), also known as "FPC flexible board", is a printed circuit made of flexible insulating substrates, which has many advantages that rigid printed circuit boards do not have. For example, it can be freely bent, wound, and folded, and can be arranged arbitrarily according to the requirements of the spatial layout, and can be moved and stretched arbitrarily in three-dimensional space, so as to achieve the integration of component assembly and wire connection. [0003] With the increase in the energy density of new energy power batteries and the increasing needs of the technical development functions of the BMS system, in order to ensure the safety of the power battery, the voltage and temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02H05K1/18H05K3/00H01M50/528H01R12/59
CPCH05K1/0296H05K1/18H05K3/0002H01R12/59H05K2201/09209
Inventor 吴永进王文宝洪诗阅洪超育钟建莹
Owner XIAMEN BOLION CIRCUIT
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