CELL HEATING ASSEMBLY, BATTERY MODULE AND VEHICLE
A cell heating assembly includes a substrate and an electric heating circuit. The substrate is provided with Q first supporting parts and P second supporting parts, and each first supporting part is used for supporting one cell. The electric heating circuit includes P electric heaters and a conducting circuit, and the conducting circuit is electrically connected with the P electric heaters. The P electric heaters and the conducting circuit are arranged on the substrate. Each second supporting part is used for supporting one electric heater. At least one electric heater and at least one second supporting part are arranged around each first supporting part.
1 . A cell heating assembly, comprising:
a substrate provided with Q first supporting parts and P second supporting parts, each first supporting part being used for supporting one cell;
an electric heating circuit comprising P electric heaters and a conducting circuit, wherein the conducting circuit is electrically connected with the P electric heaters; the P electric heaters and the conducting circuit are arranged on the substrate; each second supporting part is used for supporting one electric heater; and at least one electric heater and at least one second supporting part are arranged around each first supporting part;
wherein P and Q are integers greater than 1.
2 . The cell heating assembly according to claim 1 , wherein the conducting circuit is embedded in the substrate, and the conducting circuit passes through the second supporting parts and is electrically connected with the electric heaters.
3 . The cell heating assembly according to claim 1 , wherein the conducting circuit is a printed circuit board circuit.
4 . The cell heating assembly according to claim 1 , wherein:
the second supporting parts are arc-shaped openings;
the first supporting parts are circular openings; and
the second supporting parts arranged around the first supporting parts are arranged concentrically with the first supporting parts.
5 . The cell heating assembly according to claim 1 , wherein:
the conducting circuit comprises a first main circuit, a second main circuit and N heating branches, where N is an integer greater than 1; and
the P electric heaters are distributed in the N heating branches, and the N heating branches are connected in parallel between the first main circuit and the second main circuit.
6 . The cell heating assembly according to claim 5 , wherein the Q first supporting parts are arranged in an array in the substrate with a first gap between any two adjacent first supporting parts, and at least one or more of the P electric heaters are arranged at the first gap.
7 . The cell heating assembly according to claim 5 , wherein at least one heating branch extends in a wavy line.
8 . The cell heating assembly according to claim 1 , wherein the substrate is further provided with at least one air guide hole.
9 . A battery module, comprising:
a cell assembly; and
the cell heating assembly according to claim 1 ;
wherein the cell assembly comprises Q cells, and the Q cells are arranged on the Q first supporting parts of the cell heating assembly.
10 . The battery module according to claim 9 , wherein the cell assembly further comprises a bus member for electrically connecting electrodes of the Q cells.
11 . The battery module according to claim 10 , wherein:
the battery module further comprises an end cap fixedly connected with the substrate; and
the end cap is provided with Q first through holes penetrating through a first end face and a second end face of the end cap, the electrodes of the Q cells penetrate into the Q first through holes from the first end face and are electrically connected with the bus member fixedly connected to the second end face.
12 . The battery module according to claim 11 , wherein the end cap is provided with P second through holes penetrating the first end face and the second end face, and the P electric heaters of the cell heating assembly penetrate the P second through holes.
13 . The battery module according to claim 9 , wherein the electric heating circuit of the cell heating assembly is electrically connected at a position between a positive electrode of the cell assembly and a negative electrode of the cell assembly.
14 . The battery module according to claim 9 , further comprising:
a case provided with an accommodating cavity; and
a cover covering the case;
wherein the cell heating assembly and the cell assembly are arranged in the accommodating cavity.
15 . A vehicle, comprising:
a generator;
a starter; and
the battery module according to claim 9 ;
wherein the generator, the starter, and the electric heating circuit are connected in parallel between a positive electrode and a negative electrode of the cell assembly of the battery module.
16 . The vehicle according to claim 15 , further comprising:
a first switch assembly; and
a second switch assembly;
wherein the positive electrode of the cell assembly and a first terminal of the first switch assembly are connected to a first node, the second switch assembly and the electric heating circuit are connected in series at a position between the first node and the negative electrode of the cell assembly, and the generator and the starter are connected in parallel at a position between a second terminal of the first switch assembly and the negative electrode of the cell assembly.
17 . The vehicle according to claim 16 , further comprising:
a battery management system electrically connected to the first switch assembly and the second switch assembly.