CN210576081U - A battery pack thermal runaway protection device and a battery pack using the same - Google Patents

Abstract

The application provides a battery pack thermal runaway protector and a battery pack using the same, wherein the battery pack thermal runaway protector comprises a heat insulation part, a first heating part and a second heating part; the first heating part is arranged on one side of the heat insulation part, and the second heating part is arranged on the other side of the heat insulation part; a first heating mechanism is arranged in the first heating part, and a second heating mechanism is arranged in the second heating part. So, the battery package thermal runaway protector that this application provided can realize battery heating and thermal runaway safeguard function simultaneously, improves the space utilization of battery package.

Description

A battery pack thermal runaway protection device and a battery pack using the same

technical field

The present application relates to the technical field of battery packs, and in particular, to a battery pack thermal runaway protection device and a battery pack using the same.

Background technique

With the rapid development of electric vehicles, the technical research on battery packs has also developed rapidly. Among them, because the performance of the battery itself is greatly affected by temperature, the temperature control of the battery pack has been paid more and more attention. Due to factors such as different models, different operating conditions, and different battery types, different battery packs have different requirements for temperature control.

With the continuous increase of the driving range of electric vehicles, the energy in the battery pack is also increasing. With the increase of energy, thermal runaway in the battery pack is prone to occur. At the same time, due to the characteristics of the battery itself, high power cannot be used at low temperatures. Work seriously affects the driving experience, so both the heating system and the heat insulation system need to be installed in the battery pack.

The heating system and the heat insulation system in the current battery pack are generally arranged separately, occupying a lot of space in the battery pack.

Utility model content

The present application aims to solve the technical problem that the separate arrangement of the heating system and the heat insulation system in the battery pack occupies a large amount of space in the battery pack.

In order to solve the above technical problems, an embodiment of the present application discloses a thermal runaway protection device for a battery pack, which includes a heat insulation part, a first heating part and a second heating part;

The first heating part is arranged on one side of the insulating part, and the second heating part is arranged on the other side of the insulating part;

The first heating part is provided with a first heating mechanism, and the second heating part is provided with a second heating mechanism.

Further, the heat insulating part is a heat insulating plate.

Further, the material of the thermal insulation board is mica board or aerogel.

Further, the first heating part is a first heating plate, and the second heating part is a second heating plate.

Further, the first heating mechanism is a first heating wire, and the second heating mechanism is a second heating wire.

Further, the first heating plate and the second heating plate are both made of thermally conductive silicone pads.

The embodiment of the present application further discloses a battery pack, including at least one battery pack and at least one battery pack thermal runaway protection device.

Optionally, the number of battery packs is one, the battery pack includes a plurality of batteries, and the thermal runaway protection devices of the battery pack are respectively arranged between adjacent batteries.

Optionally, the number of battery packs is multiple, and the thermal runaway protection devices of the battery packs are respectively arranged between adjacent battery packs.

Further, the plurality of battery packs respectively include a plurality of batteries, and the thermal runaway protection devices of the battery packs are respectively arranged between adjacent batteries.

Adopting the above-mentioned technical scheme, the application has the following beneficial effects:

The thermal runaway protection device for the battery pack provided by the embodiment of the present application can simultaneously realize the functions of battery heating and thermal runaway protection, thereby improving the space utilization rate of the battery pack.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic plan view of a thermal runaway protection device for a battery pack according to an embodiment of the present application;

2 is a schematic three-dimensional structural diagram of a thermal runaway protection device for a battery pack according to an embodiment of the present application;

FIG. 3 is a schematic three-dimensional structure diagram of a battery pack according to Embodiment 1 of the present application;

4 is a schematic plan view of a battery pack in Embodiment 1 of the present application;

FIG. 5 is a schematic three-dimensional structure diagram of a battery pack according to Embodiment 2 of the present application;

6 is a schematic plan view of a battery pack according to Embodiment 2 of the present application;

The following supplementary descriptions are provided for the accompanying drawings:

1-insulation part; 2-first heating part; 3-second heating part; 4-first heating mechanism; 5-second heating mechanism; 6-battery group; 7-battery.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure, or characteristic that may be included in at least one implementation of the present application. In the description of the embodiments of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, only It is for the convenience of describing the present application and to simplify the description, rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. Also, the terms "first," "second," etc. are used to distinguish between similar objects, and are not necessarily used to describe a particular order or precedence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein.

Please refer to FIGS. 1 and 2 , FIG. 1 is a schematic structural diagram of a thermal runaway protection device for a battery pack according to an embodiment of the present application, and FIG. 2 is a schematic three-dimensional structural schematic diagram of a thermal runaway protection device for a battery pack in FIG. 1 according to an embodiment of the present application , as shown in FIG. 1 , the thermal runaway protection device for the battery pack includes a heat insulation part, a first heating part 2 and a second heating part 3;

As shown in FIG. 1 , the first heating part 2 is arranged on one side of the insulating part, and the second heating part 3 is arranged on the other side of the insulating part;

The first heating part 2 is provided with a first heating mechanism 4 , and the second heating part 3 is provided with a second heating mechanism 5 . In the event of thermal runaway, the heat shield 1 can isolate the heat generated by the battery thermal runaway, so as to prevent triggering other batteries 7 from thermal runaway; when the battery 7 is started in a low temperature environment, the heating wire is heated, and the heat passes through the heating plate. Conducted to the battery 7 to achieve the purpose of heating the battery 7 .

In the embodiment of the present application, the heat insulating portion is the heat insulating plate 1 . The heat insulation board 1 is made of a material with low thermal conductivity and is non-flammable or resistant to high temperature. For example, the material of the heat insulation board 1 is mica board. Optionally, the material of the heat insulation board 1 may be aerogel.

In the embodiment of the present application, the first heating part 2 may be a first heating plate, and the second heating part 3 may be a second heating plate.

In the embodiment of the present application, the first heating mechanism 4 is a first heating wire, and the second heating mechanism 5 is a second heating wire. The heating plate with built-in heating wire is fixed on both sides of the heat insulation plate 1, and its size is adjusted according to the size of the battery, and is slightly larger than the surface that is attached to the battery.

In the embodiment of the present application, the first heating plate and the second heating plate are both made of thermally conductive silicone pads.

The embodiment of the present application also discloses a battery pack, including a battery pack 6 and a thermal runaway protection device for the battery pack.

In an optional embodiment, as shown in FIGS. 3 and 4 , the number of battery packs 6 is one, the battery pack 6 includes a plurality of batteries 7 , and battery pack thermal runaway protection is provided between adjacent batteries 7 . device.

In another optional embodiment, as shown in FIGS. 5 and 6 , the number of battery packs 6 is multiple, and battery pack thermal runaway protection devices are provided between adjacent battery packs 6 . 6 respectively include a plurality of batteries 7, and battery pack thermal runaway protection devices are provided between adjacent batteries 7.

Based on the above solutions, several implementations are described below.

Example 1:

Please refer to FIGS. 1 and 2. FIG. 1 is a schematic structural diagram of a thermal runaway protection device for a battery pack according to Embodiment 1 of the application, and FIG. 2 is a three-dimensional structural schematic diagram of a thermal runaway protection device for a battery pack according to Embodiment 1 of the application. As shown in FIG. 1 , the thermal runaway protection device for the battery pack includes a heat insulation part, a first heating part 2 and a second heating part 3 ;

As shown in FIG. 1 , the first heating part 2 is arranged on one side of the insulating part, and the second heating part 3 is arranged on the other side of the insulating part;

The first heating part 2 is provided with a first heating mechanism 4 , and the second heating part 3 is provided with a second heating mechanism 5 . In the event of thermal runaway, the heat shield 1 can isolate the heat generated by the battery 7 during thermal runaway, so as to prevent triggering of other batteries 7 from thermal runaway; when the battery 7 is started in a low temperature environment, the heating wire is heated, and the heat passes through The plate conducts to the battery 7 for the purpose of heating the battery 7 .

In Example 1 of the present application, the heat insulating portion is the heat insulating plate 1 . The heat insulating plate 1 is made of a material with low thermal conductivity and non-flammable or high temperature resistance. In the embodiment of the present application, the material of the heat insulating plate 1 is a mica plate.

In Embodiment 1 of the present application, the first heating part 2 may be a first heating plate, and the second heating part 3 may be a second heating plate.

In Embodiment 1 of the present application, the first heating mechanism 4 is a first heating wire, and the second heating mechanism 5 is a second heating wire. The heating plate with built-in heating wire is fixed on both sides of the heat insulation plate 1, and its size is adjusted according to the size of the battery, and is slightly larger than the surface that is attached to the battery.

In Embodiment 1 of the present application, the first heating plate and the second heating plate are both made of thermally conductive silicone pads.

Embodiment 1 of the present application further discloses a battery pack, including a battery pack 6 and a thermal runaway protection device for the battery pack. As shown in FIGS. 3 and 4 , the number of battery packs 6 is one, the battery pack 6 includes a plurality of batteries 7 , and battery pack thermal runaway protection devices are provided between adjacent batteries 7 .

Example 2:

Please refer to FIGS. 1 and 2. FIG. 1 is a schematic structural diagram of a thermal runaway protection device for a battery pack according to Embodiment 2 of the present application, and FIG. 2 is a three-dimensional schematic structural diagram of a thermal runaway protection device for a battery pack according to an embodiment of the present application. As shown in 1, the thermal runaway protection device for the battery pack includes a heat insulation part, a first heating part 2 and a second heating part 3;

As shown in FIG. 1 , the first heating part 2 is arranged on one side of the insulating part, and the second heating part 3 is arranged on the other side of the insulating part;

The first heating part 2 is provided with a first heating mechanism 4 , and the second heating part 3 is provided with a second heating mechanism 5 . In the event of thermal runaway, the heat shield 1 can isolate the heat generated by the battery 7 during thermal runaway, so as to prevent triggering of other batteries 7 from thermal runaway; when the battery 7 is started in a low temperature environment, the heating wire is heated, and the heat passes through The plate conducts to the battery 7 for the purpose of heating the battery 7 .

In Example 2 of the present application, the heat insulating portion is the heat insulating plate 1 . The heat insulating plate 1 is made of a material with low thermal conductivity and is non-flammable or resistant to high temperature. In Example 2 of the present application, the material of the heat insulating plate 1 is a mica plate.

In Embodiment 2 of the present application, the first heating part 2 may be a first heating plate, and the second heating part 3 may be a second heating plate.

In Embodiment 2 of the present application, the first heating mechanism 4 is a first heating wire, and the second heating mechanism 5 is a second heating wire. The heating plates with built-in heating wires are fixed on both sides of the heat insulation plate 1 , and the size is adjusted according to the size of the battery 7 , and is slightly larger than the surface attached to the battery 7 .

In Embodiment 2 of the present application, the first heating plate and the second heating plate are both made of thermally conductive silicone pads.

Embodiment 2 of the present application further discloses a battery pack, including a battery pack 6 and a thermal runaway protection device for the battery pack. As shown in FIGS. 5 and 6 , the number of battery packs 6 is multiple, and battery pack thermal runaway protection devices are provided between adjacent battery packs 6 . There are battery pack thermal runaway protection devices between the batteries 7.

Example 3:

Please refer to FIGS. 1 and 2 , FIG. 1 is a schematic structural diagram of a thermal runaway protection device for a battery pack according to Embodiment 3 of the present application, and FIG. 2 is a three-dimensional structure of a thermal runaway protection device for a battery pack in Embodiment 3 of the present application Schematic diagram, as shown in FIG. 1 , the thermal runaway protection device for the battery pack includes a heat insulation part, a first heating part 2 and a second heating part 3 ;

As shown in FIG. 1 , the first heating part 2 is arranged on one side of the insulating part, and the second heating part 3 is arranged on the other side of the insulating part;

The first heating part 2 is provided with a first heating mechanism 4 , and the second heating part 3 is provided with a second heating mechanism 5 . In the event of thermal runaway, the heat shield 1 can isolate the heat generated by the battery 7 during thermal runaway, so as to prevent triggering of other batteries 7 from thermal runaway; when the battery 7 is started in a low temperature environment, the heating wire is heated, and the heat passes through The plate conducts to the battery for the purpose of heating the battery 7 .

In Example 3 of the present application, the heat insulating portion is the heat insulating plate 1 . The thermal insulation board 1 is a material with low thermal conductivity and is incombustible or resistant to high temperature. In Embodiment 3 of the present application, the material of the thermal insulation board 1 is aerogel.

In Embodiment 3 of the present application, the first heating part 2 may be a first heating plate, and the second heating part 3 may be a second heating plate.

In Embodiment 3 of the present application, the first heating mechanism 4 is a first heating wire, and the second heating mechanism 5 is a second heating wire. The heating plate with built-in heating wire is fixed on both sides of the heat insulation plate 1, and its size is adjusted according to the size of the battery, and is slightly larger than the surface that is attached to the battery.

In Embodiment 3 of the present application, the first heating plate and the second heating plate are both made of thermally conductive silicone pads.

Embodiment 3 of the present application further discloses a battery pack, including a battery pack 6 and a thermal runaway protection device for the battery pack. As shown in FIGS. 3 and 4 , the number of battery packs 6 is one, the battery pack 6 includes a plurality of batteries 7 , and battery pack thermal runaway protection devices are provided between adjacent batteries 7 .

Example 4:

Please refer to FIGS. 1 and 2 . FIG. 1 is a schematic structural diagram of a thermal runaway protection device for a battery pack according to Embodiment 4 of the application, and FIG. 2 is a three-dimensional schematic structural diagram of a thermal runaway protection device for a battery pack according to Embodiment 7 of the application. As shown in FIG. 1 , the thermal runaway protection device for the battery pack includes a heat insulation part, a first heating part 2 and a second heating part 3 ;

As shown in FIG. 1 , the first heating part 2 is arranged on one side of the insulating part, and the second heating part 3 is arranged on the other side of the insulating part;

The first heating part 2 is provided with a first heating mechanism 4 , and the second heating part 3 is provided with a second heating mechanism 5 . In the event of thermal runaway, the heat shield 1 can isolate the heat generated by the battery 7 during thermal runaway, so as to prevent triggering of other batteries 7 from thermal runaway; when the battery 7 is started in a low temperature environment, the heating wire is heated, and the heat passes through The plate conducts to the battery 7 for the purpose of heating the battery 7 .

In Example 4 of the present application, the heat insulating portion is the heat insulating plate 1 . The thermal insulation board 1 is made of a material with low thermal conductivity and is incombustible or resistant to high temperature. In Example 4 of the present application, the material of the thermal insulation board 1 is aerogel.

In Embodiment 4 of the present application, the first heating part 2 may be a first heating plate, and the second heating part 3 may be a second heating plate.

In Embodiment 4 of the present application, the first heating mechanism 4 is a first heating wire, and the second heating mechanism 5 is a second heating wire. The heating plate with built-in heating wire is fixed on both sides of the heat insulation plate 1, and its size is adjusted according to the size of the battery, and is slightly larger than the surface that is attached to the battery.

In Embodiment 4 of the present application, the first heating plate and the second heating plate are both made of thermally conductive silicone pads.

Embodiment 4 of the present application further discloses a battery pack, including a battery pack 6 and a thermal runaway protection device for the battery pack. As shown in FIGS. 5 and 6 , the number of battery packs 6 is multiple, and battery pack thermal runaway protection devices are provided between adjacent battery packs 6 . There are battery pack thermal runaway protection devices between the batteries 7.

The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. Inside.

Claims (10)

1. A thermal runaway protection device for a battery pack, characterized in that it comprises an insulating part (1), a first heating part (2) and a second heating part (3); The first heating part (2) is arranged on one side of the heat insulating part (1), and the second heating part (3) is arranged on the other side of the heat insulating part (1); The first heating part (2) is provided with a first heating mechanism (4), and the second heating part (3) is provided with a second heating mechanism (5). 2 . The thermal runaway protection device for a battery pack according to claim 1 , wherein the heat insulating portion ( 1 ) is a heat insulating plate. 3 . 3 . The thermal runaway protection device for a battery pack according to claim 2 , wherein the material of the heat insulating plate is mica plate or aerogel. 4 . 4 . The thermal runaway protection device for a battery pack according to claim 3 , wherein the first heating part ( 2 ) is a first heating plate, and the second heating part ( 3 ) is a second heating plate. 5 . 5 . The thermal runaway protection device for a battery pack according to claim 4 , wherein the first heating mechanism ( 4 ) is a first heating wire, and the second heating mechanism ( 5 ) is a second heating wire. 6 . 6 . The thermal runaway protection device for a battery pack according to claim 5 , wherein the first heating plate and the second heating plate are made of thermally conductive silicone pads. 7 . 7. A battery pack, characterized by comprising at least one battery pack (6) and at least one thermal runaway protection device for the battery pack according to any one of claims 1-6. 8. The battery pack according to claim 7, wherein the number of the battery pack (6) is one, the battery pack (6) comprises a plurality of batteries (7), and the battery pack is protected against thermal runaway The devices are respectively arranged between the adjacent batteries (7). 9 . The battery pack according to claim 7 , wherein the number of the battery packs ( 6 ) is plural, and the thermal runaway protection devices for the battery pack are respectively arranged on the adjacent battery packs ( 6 ). 10 . between. 10. The battery pack according to claim 9, characterized in that, a plurality of the battery packs (6) respectively comprise a plurality of batteries (7), and the thermal runaway protection device of the battery pack is provided on the adjacent batteries (7) between.

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