Battery Module Electrode Layout to Shorten HV Harness Routing
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Solution Overview
Problem
In vehicle battery packs, long high-voltage wire harnesses are prone to short circuits and fires during collisions, and parallel wiring with low-voltage harnesses leads to electromagnetic interference, affecting signal accuracy.
Innovation Solution
A battery module design where high-voltage wire harnesses are connected closer together, reducing wiring length and avoiding parallel wiring with low-voltage harnesses, using a cell row with specific electrode arrangements and bus-bar configurations to minimize interference and enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If high-voltage wire harnesses are connected at opposite ends of the battery module, then the battery module structure is simple, but the wiring length becomes excessively long increasing short circuit and fire risks
Solution Approach 1:
Instead of connecting positive and negative output ends at opposite ends of the battery module as in conventional designs, this patent inverts the arrangement by connecting both output ends at the same end of the battery module. Specifically, the positive electrode connecting plate is connected to the first end cell, and the negative electrode connecting plate is connected to the second end cell, both located at the same end. This inversion dramatically reduces wiring length and eliminates the need for long wire harnesses traversing the entire battery pack, thereby resolving the contradiction between structural simplicity and safety.
2Power
If high-voltage wire harnesses are routed through the battery pack, then power transmission is achieved, but electromagnetic interference occurs with low-voltage wire harnesses affecting signal accuracy
Solution Approach 1:
This patent extracts the high-voltage connection function from the conventional long wire harness routing and consolidates it at one end of the battery module. By taking out the need for long-distance high-voltage wiring and replacing it with localized bus bar connections at the same end, the source of electromagnetic interference is eliminated. Low-voltage signal wires can then be routed nearby without suffering from electromagnetic interference, thus resolving the contradiction between power transmission and signal accuracy.
3Adaptability or versatility
If wire harnesses are made longer to accommodate end connections, then connection flexibility is improved, but the risk of short circuit and fire during collision increases
Solution Approach 1:
The patent applies the inversion principle by fundamentally changing the connection topology from opposite-end connections to same-end connections. This eliminates long wire harnesses that would be vulnerable to damage during collisions. The connection flexibility is maintained through the use of bus bars and connecting plates that provide rigid, protected electrical connections, while the harmful effect of long exposed wiring is completely removed.
Data Source
AI summary
Disclosed are a battery module and a battery pack having the same for a vehicle. The battery module includes a cell row and output electrode connecting plates. The cell row has a first end and a second end in an arrangement direction of a plurality of cells. Each cell includes a first end cell located at the first end and a second end cell located at the second end. The output electrode connecting plates include a positive electrode connecting plate and a negative electrode connecting plate, one of which is connected to the first end cell, and the other is connected to a cell adjacent to the first end cell.