Battery module

Abstract

In battery modules, external flames are efficiently suppressed. [Solution] The battery module 1 comprises a plurality of battery cells 30, a cell holder 20 that houses the plurality of battery cells 30 and electrically connects the plurality of battery cells 30 on at least one of its upper and lower surfaces, and at least one first circuit board 40 that is positioned opposite to at least one of the upper and lower surfaces of the cell holder 20 without any intervening objects so as to overlap with the entire plurality of battery cells 30 in a plan view.

Claims

1. Multiple battery cells, A cell holder that houses the plurality of battery cells and electrically connects the plurality of battery cells on at least one of its upper and lower surfaces, At least one first circuit board is positioned so as to overlap with the entire plurality of battery cells in a plan view, facing each other without any intervening material on at least one of the upper and lower surfaces of the cell holder, and Equipped with, The at least one first circuit board is a battery module, which is a board dedicated to the power supply circuit.

2. Multiple battery cells, A cell holder that houses the plurality of battery cells and electrically connects the plurality of battery cells on at least one of its upper and lower surfaces, At least one first circuit board is positioned so as to overlap with the entire plurality of battery cells in a plan view, facing each other without any intervening objects on at least one of the upper and lower surfaces of the cell holder, In the vertical direction, a second circuit board is positioned outside the at least one first circuit board and has more components mounted than the at least one first circuit board. A battery module equipped with the following features.

3. The battery module according to claim 1 or 2, wherein the at least one first circuit board is a rigid substrate.

4. The battery module according to claim 3, wherein the at least one first circuit board is made of glass fiber and heat-resistant resin.

5. The at least one first circuit board is, An upper first circuit board positioned facing the upper surface of the cell holder, A lower first circuit board positioned facing the lower surface of the cell holder and A battery module according to claim 1 or 2, comprising:

6. The battery module according to claim 1 or 2, wherein the thickness of at least one first circuit board is 0.8 mm or more and 2.0 mm or less.

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