[1]
Technical Field
[2]
The present application relates to the field of energy storage device, in particular to a battery module and a battery pack.
[3]
Background Art
[4]
At present, the energy density of the power battery with increasingly high, battery safety of the market demand high. In the event when the abuse, battery easily undergo thermal control, fast forming high temperature and destructive power, the battery may be burn-through of the upper cover, the occurrence of fire, causing great safety accidents.
[5]
In the prior art, only the inside of the die set of the battery temperature acquisition, the collected signal is transmitted to the vehicle control system, but there will be times of false signal, lead to the misjudgment.
[6]
Content of the utility model
[7]
The invention provides a battery module and a battery pack, in order to solve the problems in the prior art, improve the battery module of the thermal runaway alarm accuracy.
[8]
The 1st in application provides a battery module, wherein comprises: sequentially stacking a plurality of the battery cell, the battery cell is provided with explosion-proof valve;
[9]
The battery module also includes setting up in the battery monomer above the circuit board, the circuit board is provided with a temperature-sensing device, the temperature-the location of the device corresponding to the explosion-proof valve;
[10]
The temperature-device with the battery management system can be connected to form a loop, the bursting of the explosion-proof valve that can initiate the loop open.
[11]
Preferably, device is etching on the circuit board of the metal wire.
[12]
Preferably, the circuit board comprises a main body and is provided on the main body with a through hole, the through hole corresponding to the position of the explosion-proof valve;
[13]
The temperature-device is formed on the circuit board metal wire; the wire will be the through hole is divided into a plurality of regions.
[14]
Preferably, the metal wire is configured to etching on the circuit board.
[15]
Preferably, the metal wire is a plurality of, many state metal wire are parallel to each other, and are perpendicular to the extending direction of the through hole.
[16]
Preferably, the metal wire is fixed on said main body.
[17]
Preferably, the metal wire is above or below the through hole, and the two ends of the metal wire is fixed on the outside of the through hole on the body along the length direction of the two ends.
[18]
Preferably, the metal wire along the battery module extend in the longitudinal direction, and the metal wire in the battery module of the height direction of the projection, the through hole is located in the part of the die set of the battery within the height direction of the projection.
[19]
Preferably, the metal wire is above or below the through hole, and the two ends of the metal wire is fixed on the outside of the through hole on the body along the two ends of the width direction.
[20]
Preferably, the metal wire along the battery module extending in the width direction, or the metal wire the extending direction of the extending direction of the through hole of the cross, and the metal wire in the battery module of the height direction of the projection, the through hole is located in the part of the die set of the battery within the height direction of the projection.
[21]
Preferably, characterized in that said main body is provided with the pad, the metal wire through the pad and the body is fixed.
[22]
Preferably, the through hole comprises a hole 1st and 2nd through hole;
[23]
The through-hole and the 1st 2nd through hole is a strip-shaped hole;
[24]
The through-hole and the 1st 2nd-pass arranged extending in the direction of the explosion-proof valve.
[25]
Preferably, the metal wire is made of copper, aluminum or tin in any kind of.
[26]
Preferably, the battery module also includes the fixed to the battery monomer on the side of the side plate, is fixed to the end plate and the end of the battery cell disposed above the battery cell isolation plate;
[27]
The isolating plate is provided with a vent hole, the vent hole corresponding with the explosion-proof valve;
[28]
The circuit board is disposed in the isolation plate; said temperature sensing device and the corresponding to the exhaust hole.
[29]
This application 2nd was provided in a battery pack, wherein comprises a battery management system and the above any of the battery module;
[30]
The battery module in the temperature-sensing device and the battery management system connected to form a loop.
[31]
The present invention provides the technical scheme can achieve the following beneficial effects:
[32]
The present invention provides a battery module and the battery pack, the battery module comprises a circuit board and stacked battery cell, the battery cell is provided with explosion-proof valve, circuit board is provided with a temperature-sensing device. The position of the sensing device corresponding to the explosion-proof valve, temperature-sensing device can be connected with the battery management system connected to form a loop, the battery cell when the explosion-proof valve of the bursting of the, battery monomer in the ejected gas, liquid or fire can be trigger loop open circuit, then can alarm, improves the battery module of the accuracy of the thermal runaway alarm.
[33]
It should be understood that, the above general description of the details of the latter article and described is only illustrative, not limiting the invention.
[34]
Description of drawings
[35]
In order to explain more clearly the application specific embodiment or the technical proposal in the prior art, the lower portion of the specific embodiment described or the prior art requires the use of a in the accompanying drawing of a brief introduction, it is clear that, in the attached drawing is described below of some embodiments of the invention, the ordinary skill in the art is concerned, in the creative work of the premise of pay, can also be on the basis of these with photos to obtain the other of the Figure.
[36]
Figure 1 is the structure is decomposed and schematic view of the application of the embodiment of a battery module;
[37]
Figure 2 is the structure of the main cutaway view of the battery cell;
[38]
Figure 3 is the structure diagram of the battery module in the circuit board shown in Figure 1;
[39]
Figure 4 is the A is enlarged view of in Figure 3;
[40]
Figure 5 is the B is enlarged view of in Figure 3;
[41]
Figure 6 is the structure is decomposed and schematic view of the application of the embodiment of another battery module;
[42]
Figure 7 is the structure diagram of the battery module in the circuit board shown in Figure 6;
[43]
Figure 8 is the structure diagram of the application of the embodiment of another battery module;
[44]
Figure 9 is the structure diagram of the Figure 8 shown in the battery module of the circuit b…