Aerogel heat-insulation fireproof plate for power battery

Abstract

The utility model belongs to the technical field of new energy automobile batteries, and particularly relates to a power battery aerogel heat insulation fireproof plate which comprises a shell, a cavity is formed in the shell, a fireproof heat preservation layer, an aerogel heat insulation layer and a protection layer are arranged in the cavity, the fireproof heat preservation layer is arranged outside the aerogel heat insulation layer, and the protection layer is arranged outside the aerogel heat insulation layer. The aerogel heat insulation layer is arranged outside the protective layer; thermistors are arranged among the fireproof heat preservation layer, the aerogel heat insulation layer and the protection layer, first holes are formed in the two sides of the shell, and wires of the thermistors penetrate through the first holes to be connected with an external circuit. According to the utility model, the thermistors are arranged in an interlayer among the fireproof thermal insulation layer, the aerogel thermal insulation layer and the protective layer in parallel. When the thermistor monitors the temperature of a certain area, the thermistor can control the current of the area and transmit a signal to a user side so as to prompt a user about the temperature information of the automobile battery, and when the temperature of the battery is abnormal, the thermistor can automatically transmit the signal to the user for early warning, so that the safety and the stability of the battery are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to new energy automobile battery technical field, concretely is a kind of power battery aerogel heat insulation fireproof plate. BACKGROUND

[0002] With the rapid growth of electric vehicle (EV) and hybrid electric vehicle (HEV) market, the safety and performance of power battery have become a key issue. Power battery not only needs to provide efficient energy output, but also needs to ensure safe operation under various working conditions, including extreme temperature conditions. Currently, the mainstream power battery on the market mainly includes lithium-ion batteries (LIBs), which have high energy density and long cycle life, but also have some safety hazards, especially when the battery overheats, which may cause thermal runaway phenomenon.

[0003] Chinese utility model patent publication No. CN 221150155U discloses an aerogel thermal insulation pad for automobile battery pack, which is provided with a support layer to provide support and cushioning for the aerogel thermal insulation pad, the fireproof layer outside it and the shell, preventing damage to the thermal insulation pad caused by external impact. However, there is no monitoring device in the battery pack, and if the battery pack overheats or other abnormalities occur, it may cause the battery pack to burn if it cannot be warned in time, resulting in low safety and stability. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem in view of the above-mentioned defects, and provides a power battery aerogel heat insulation fireproof plate.

[0005] The utility model solves the technical problem by adopting the following technical scheme: a power battery aerogel heat insulation fireproof plate, comprising a shell, a cavity is formed inside the shell, a fireproof insulation layer, an aerogel thermal insulation layer and a protective layer are arranged in the cavity, the fireproof insulation layer is arranged outside the aerogel thermal insulation layer, and the aerogel thermal insulation layer is arranged outside the protective layer.

[0006] A thermistor is arranged between the fireproof insulation layer, the aerogel thermal insulation layer and the protective layer, first holes are formed on both sides of the shell, and the wires of the thermistor pass through the first holes and are connected to an external circuit.

[0007] Further, the thermistor is a semiconductor NTC thermistor, the semiconductor NTC thermistor is in the form of a sheet, the thickness of the semiconductor NTC thermistor is 0.5-1mm, and the material of the semiconductor NTC thermistor includes manganese dioxide (MnO2), zinc (Zn) and titanium (Ti).

[0008] Further, the surface of the shell is coated with a layer of mica layer, and the thickness of the mica layer is 0.3-1.5mm.

[0009] Further, the fireproof layer is made of fireproof cotton, and the fireproof cotton is selected from aluminum silicate ceramic fiber, and the thickness of the fireproof layer is 0.5-2mm.

[0010] Further, the aerogel thermal insulation layer adopts an aluminum oxide aerogel pad, and the thickness of the aerogel thermal insulation layer is 0.5-1.5mm.

[0011] Further, the protective layer adopts an organic silicon fireproof coating layer, and the thickness of the organic silicon fireproof coating layer is 0.5-1.5mm.

[0012] The utility model discloses the beneficial effect is:

[0013] The utility model discloses a fireproof and heat insulation layer, aerogel thermal insulation layer, protective layer and thermistor, and the thermistor adopts semiconductor NTC thermistor, and the semiconductor NTC thermistor is set to sheet shape, and the thermistor is parallelly connected and is arranged in the interlayer between fireproof and heat insulation layer, aerogel thermal insulation layer and protective layer. When the thermistor monitors the temperature of a certain area, the current size of the area can be controlled, and the signal can be transmitted to the user end, and the user can be prompted about the temperature information of the automobile battery. When the battery temperature is abnormal, the signal can be automatically transmitted to the user for early warning, and the safety and stability of the battery are improved. ACCURACY OF DRAWINGS

[0014] The foregoing and other objects, features and advantages of the utility model will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0015] Figure 1 It is the front view of the utility model safety belt body.

[0016] Wherein: 1, shell, 2, cavity, 3, fireproof and heat insulation layer, 4, aerogel thermal insulation layer, 5, protective layer, 6, thermistor, 7, first hole, 8, mica layer. DETAILED DESCRIPTION

[0017] The utility model will be further described below in conjunction with the drawings.

[0018] Referring to Figure 1 As shown in the figure, a kind of power battery aerogel thermal insulation fireproof board, including shell 1, shell 1 inside is equipped with cavity 2, the cavity 2 is provided with fireproof and heat insulation layer 3, aerogel thermal insulation layer 4 and protective layer 5, fireproof and heat insulation layer 3 is arranged at the outside of aerogel thermal insulation layer 4, aerogel thermal insulation layer 4 is arranged at the outside of protective layer 5;

[0019] Thermistor 6 is arranged between fireproof and heat insulation layer 3, aerogel thermal insulation layer 4 and protective layer 5, first hole 7 is formed in the both sides of shell 1, and the wire of thermistor 6 passes through first hole 7 and is connected with external circuit.When wire passes through first hole 7, first hole 7 is plugged by covering insulating material, to prevent other substances from affecting the work of resistance.

[0020] Further, the thermal resistor 6 adopts a semiconductor NTC thermal resistor, the semiconductor NTC thermal resistor is arranged in a sheet shape, the thickness of the semiconductor NTC thermal resistor is 0.5-1mm, and the material of the semiconductor NTC thermal resistor includes manganese dioxide (MnO2), zinc (Zn) and titanium (Ti).

[0021] Further, the surface of the shell 1 is coated with a mica layer 8, and the thickness of the mica layer 8 is 0.3-1.5mm.

[0022] Further, the fireproof layer is made of refractory cotton, the refractory cotton is selected from aluminum silicate ceramic fiber, and the thickness of the fireproof layer is 0.5-2mm.

[0023] Further, the aerogel thermal insulation layer 4 adopts an aluminum oxide aerogel pad, and the thickness of the aerogel thermal insulation layer 4 is 0.5-1.5mm.

[0024] Further, the protective layer 5 adopts an organic silicon fireproof coating layer, and the thickness of the organic silicon fireproof coating layer is 0.5-1.5mm. The fireproof insulation layer 3 and the aerogel thermal insulation layer 4 are both provided with two groups, and the protective layer 5 is provided with one group. The fireproof insulation layer 3 and the aerogel thermal insulation layer 4 are respectively arranged in the cavity 2 in an axisymmetric manner about the protective layer 5.

[0025] In the embodiment of the utility model, please refer to Figure 1 , working principle is: in use, place the shell 1 between each battery pack, first the outermost shell 1 adopts EVA material, the outer surface of the shell 1 is coated with a mica layer 8, and the mica is used as a good fire-retardant material and can resist high temperature fire first, secondly, the fireproof insulation layer 3 arranged in the shell 1 is made of refractory cotton, and the refractory cotton is selected from aluminum silicate ceramic fiber material, which can greatly improve the fireproof performance of aerogel, the aerogel thermal insulation layer 4 is arranged in the fireproof insulation layer 3, the aerogel thermal insulation layer 4 adopts an aluminum oxide aerogel pad, which can further cut off the high temperature generated by combustion when the battery is on fire, preventing the spread of combustion. The protective layer 5 is arranged in the aerogel thermal insulation layer 4, the protective layer 5 adopts an organic silicon fireproof coating layer, the thickness of the mica layer 8 is 0.3-1.5mm, the thickness of the fireproof layer is 0.5-2mm, 0.5-1.5mm, 0.5-1.5mm. The appropriate thickness of the aerogel thermal insulation fireproof plate in the battery pack can be selected according to the actual situation.

[0026] A thermistor 6 is arranged between the fireproof insulation layer 3, the aerogel thermal insulation layer 4 and the protective layer 5, the thermistor 6 adopts a semiconductor NTC thermistor, the semiconductor NTC thermistor is arranged in a sheet shape, a plurality of pieces of the semiconductor NTC thermistor are arranged in parallel in the interlayer between the fireproof insulation layer 3, the aerogel thermal insulation layer 4 and the protective layer 5, first holes 7 are arranged on both sides of the shell 1, the first holes 7 are located on both sides of the interlayer between the fireproof insulation layer 3, the aerogel thermal insulation layer 4 and the protective layer 5, and the wires at both ends of the thermistor 6 can pass through the first holes 7 on the surface of the shell 1 and be connected with external circuits, since the thermistor 6 is arranged in parallel, when the thermistor 6 monitors the temperature of a certain area, the current of the area can be controlled, and a signal can be transmitted to a user end, so that the user can be prompted about the temperature information of the automobile battery, and when the temperature of the battery is abnormal, a signal can be automatically transmitted to the user for early warning.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and does not mean to specially indicate the order or sequence, nor to limit the present application, but only to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but must be based on the realization of ordinary skilled persons in the art, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.

[0029] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, and any simple modification, equivalent change made on the basis of the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

Claims

1. A power battery aerogel thermal insulation fireproof plate comprising a shell (1), characterized in that: The shell (1) is internally provided with a cavity (2), the cavity (2) is provided with a fireproof insulation layer (3), an aerogel thermal insulation layer (4) and a protective layer (5), the fireproof insulation layer (3) is arranged outside the aerogel thermal insulation layer (4), and the aerogel thermal insulation layer (4) is arranged outside the protective layer (5); The fireproof insulation layer (3), the aerogel thermal insulation layer (4) and the protective layer (5) are provided with a thermistor (6), and the shell (1) is provided with a first hole (7) on both sides; the lead wire of the thermistor (6) passes through the first hole (7) and is connected with an external circuit.

2. The power battery aerogel thermal insulation fireproof plate according to claim 1, characterized in that: The thermistor (6) is a semiconductor NTC thermistor, the semiconductor NTC thermistor is in a sheet shape, the thickness of the semiconductor NTC thermistor is 0.5-1mm, and the material of the semiconductor NTC thermistor comprises manganese dioxide (MnO2), zinc (Zn) and titanium (Ti).

3. The power battery aerogel thermal insulation fireproof plate according to claim 1, characterized in that: The surface of the shell (1) is coated with a mica layer (8), and the thickness of the mica layer (8) is 0.3-1.5mm.

4. The power battery aerogel thermal insulation fireproof plate according to claim 1, characterized in that: The fireproof layer is made of fire-resistant cotton, the fire-resistant cotton is selected from aluminum silicate ceramic fiber, and the thickness of the fireproof layer is 0.5-2mm.

5. The power battery aerogel thermal insulation fireproof plate according to claim 1, characterized in that: The aerogel thermal insulation layer (4) is made of an alumina aerogel pad, and the thickness of the aerogel thermal insulation layer (4) is 0.5-1.5mm.

6. The power battery aerogel thermal barrier fireproof plate according to claim 1, characterized in that: The protective layer (5) is made of an organic silicon fireproof coating layer, and the thickness of the organic silicon fireproof coating layer is 0.5-1.5mm.

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