Battery Module Voltage Detection via Stacked Circuit Board and Wiring Member
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Solution Overview
Problem
Existing battery modules face complexity in construction and assembly due to the need for precise wiring connections between battery cells and voltage detection circuits, which can lead to inaccuracies in terminal voltage detection and increased manufacturing costs.
Innovation Solution
A battery module design that includes a battery block with a cover member, a circuit board with a voltage detection circuit, and a wiring member connected via a first connection member, allowing for simplified assembly and accurate terminal voltage detection by overlapping the circuit board and wiring member on the cover member, eliminating the need for complex detours around the cover member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a circuit board with voltage detection circuit is arranged on the insulating plate, then terminal voltage detection is enabled, but the construction becomes complex and assembly becomes difficult due to the need for precise wiring connections
Solution Approach 1:
The patent divides the battery module into distinct functional segments: the insulating plate serves as a base layer, the circuit board is positioned above it for voltage detection, and the wiring member connects these components. This segmentation allows each component to be optimized independently while simplifying the overall construction and assembly process.
2Reliability
If complex wiring connections are used to connect battery cells to the circuit board, then reliable electrical connection is achieved, but manufacturing cost increases and assembly becomes more difficult
Solution Approach 1:
The patent introduces a wiring member as an intermediary component that simplifies the electrical connection between battery cells and the circuit board. This wiring member acts as a mediator that reduces the complexity of direct connections while maintaining reliable electrical contact, thereby lowering manufacturing costs and simplifying assembly procedures.
3Reliability
If wiring members make detours around the cover member to connect terminals, then connection is achieved, but contact resistance increases and detection accuracy decreases
Solution Approach 1:
The patent transitions the wiring connection from a two-dimensional planar arrangement to a three-dimensional stacked configuration. The circuit board is positioned above the insulating plate, and the wiring member connects terminals vertically through this stacked arrangement, eliminating the need for detours around the cover member and reducing contact resistance.
Data Source
AI summary
A battery module includes a battery block, a cover member, a circuit board, a wiring member, and a first connection member. The battery block includes a plurality of battery cells, and has a terminal surface. Terminals of the plurality of battery cells are arranged on the terminal surface. The cover member is arranged on or above the terminal surface of the battery block. The circuit board overlaps the cover member, and includes a voltage detection circuit for detecting terminal voltages of the plurality of battery cells. The wiring member overlaps the cover member, and is electrically connected to the terminals of the plurality of battery cells. The first connection member electrically connects the circuit board to the wiring member.