Heat preservation assembly, battery module and electric equipment

Abstract

The utility model provides a heat preservation assembly, a battery module and electric equipment, and relates to the technical field of battery heat preservation, the heat preservation assembly comprises a first heating piece, a second heating piece, a heat insulation piece, a first connecting piece, a second connecting piece and a packaging piece, the second heating piece and the first heating piece are oppositely arranged; the heat insulation piece is abutted between the first heating piece and the second heating piece; the first connecting piece is connected with the first heating piece; the second connecting piece is connected with the second heating piece; the packaging piece packages the first heating piece, the second heating piece and the heat insulation piece. According to the utility model, the battery is subjected to heat transfer through the first heating element and the second heating element, and the heat insulation element has a certain heat preservation and heat insulation effect, so that the first heating element and the second heating element have different heating rates, and the heating modes of the first heating element and the second heating element are mutually independent; and the heating and heat preservation effects on the battery module are further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery heat preservation technical field, specifically, relate to a heat preservation subassembly, battery module and electric equipment. BACKGROUND

[0002] The temperature of lithium battery has big fluctuation and change, and the fluctuation and change will affect the charge and discharge efficiency and product performance in the use process of the battery, the lithium battery is preserved to reduce the heat exchange between the lithium battery and the outside environment, and the lithium battery is used in the suitable working temperature range. Since the multiple batteries in the battery module have poor temperature uniformity, heat loss occurs between the multiple batteries when the lithium battery is heated and preserved, and the heating and preserving effect of the battery module is affected. SUMMARY

[0003] The utility model discloses a heat preservation subassembly, battery module and electric equipment, and the heat insulation piece has certain heat preservation and insulation effect, the heating mode of the first heating piece and the second heating piece is independently operated, and then the heating and preserving effect of the battery module is improved.

[0004] The first aspect of the utility model provides a kind of heat preservation subassembly, and the heat preservation subassembly includes first heating piece, second heating piece, heat insulation piece, first connecting piece, second connecting piece and packaging piece.

[0005] First heating piece;

[0006] Second heating piece, the second heating piece is oppositely arranged with the first heating piece;

[0007] Heat insulation piece, the heat insulation piece is butted between the first heating piece and the second heating piece;

[0008] First connecting piece, the first connecting piece is connected with the first heating piece;

[0009] Second connecting piece, the second connecting piece is connected with the second heating piece;

[0010] Packaging piece, the packaging piece encapsulates the first heating piece, the second heating piece and the heat insulation piece.

[0011] In a possible embodiment of the utility model, the first heating piece and the second heating piece are parallelly arranged.

[0012] In a possible embodiment of the utility model, the first heating piece and the second heating piece are both bending structures.

[0013] In a possible embodiment of the utility model, the first connecting piece and the second connecting piece are connected in parallel or connected in series.

[0014] In a possible embodiment of the present application, the thermal insulation material is aerogel, microporous polypropylene, vacuum insulation board or ceramic fiber.

[0015] In a possible embodiment of the present application, the packaging material is polypropylene, polyethylene, polyimide, silica gel, epoxy resin or PET.

[0016] In a possible embodiment of the present application, the first heating element has a projection area D1 on the thermal insulation material, and the thermal insulation material has a side area Q, and the following condition is met: 0.3Q≤D1Q.

[0017] In a possible embodiment of the present application, the second heating element has a projection area D2 on the thermal insulation material, and the thermal insulation material has a side area Q, and the following condition is met: 0.3Q≤D2Q.

[0018] The second aspect of the present application provides a battery module comprising the heat preservation assembly of any one of the above embodiments, a plurality of the batteries are arranged side by side along a first direction, and the heat preservation assembly is arranged on opposite sides of each of the batteries to stagger the batteries and the heat preservation assemblies.

[0019] The third aspect of the present application provides a power consumption device comprising the battery module of the above embodiments.

[0020] Compared with the prior art, the heat preservation assembly, the battery module and the power consumption device have the following advantages: the heat preservation assembly is arranged between two adjacent batteries to abut against one battery by the first heating element and abut against the other battery by the second heating element, so that the first heating element and the second heating element can heat the batteries, the environment temperature of the batteries is maintained, the first heating element and the second heating element are separated by the thermal insulation material to prevent interference and obstruction between the first heating element and the second heating element during heating, the thermal insulation material has a certain heat preservation and insulation effect, the packaging material is used to fix the thermal insulation material, the first heating element and the second heating element, the first heating element and the second heating element have different heating rates when the first connecting element connects the first heating element and the second connecting element connects the second heating element, the first heating element and the second heating element operate independently, and the heating and heat preservation effect of the battery module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the premise of not paying creative labor.

[0022] Figure 1 A cross-sectional structure diagram of the heat preservation assembly provided in some embodiments of the present application Figure 1 ;

[0023] Figure 2 A cross-sectional structure diagram of the heat preservation assembly provided in some embodiments of the present application Figure 2 ;

[0024] Figure 3 A side view structure diagram of the heat preservation assembly provided in some embodiments of the present application Figure 1 ;

[0025] Figure 4 A side view structure diagram of the heat preservation assembly provided in some embodiments of the present application Figure 2 ;

[0026] Figure 5 A structure diagram of the battery module provided in some embodiments of the present application.

[0027] Main component symbol explanation

[0028] 100-heat preservation assembly; 110-first heating member; 120-second heating member; 130-heat insulation member; 140-first connecting member; 150-second connecting member; 160-encapsulation member; 200-battery module; 210-battery; X-first direction; Y-second direction. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents the selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0031] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0036] Embodiment 1

[0037] Reference Figure 1As shown, the embodiment of the present application provides a heat preservation assembly 100, which comprises a first heating member 110, a second heating member 120, a heat insulation member 130, a first connecting member 140, a second connecting member 150 and an encapsulating member 160.

[0038] Specifically, in combination with Figure 1 and Figure 2 As shown, the second heating member 120 is arranged opposite to the first heating member 110. The heat insulation member 130 is abutted between the first heating member 110 and the second heating member 120. The first connecting member 140 is connected with the first heating member 110. The second connecting member 150 is connected with the second heating member 120. The encapsulating member 160 encapsulates the first heating member 110, the second heating member 120 and the heat insulation member 130, and accordingly, the heat preservation assembly 100 is arranged for heat preservation of the battery module 200. The heat preservation assembly 100 is arranged between two adjacent batteries 210. The first heating member 110 is arranged to abut against one battery 210, and the second heating member 120 is arranged to abut against another battery 210, so as to transfer heat to the batteries 210 through the first heating member 110 and the second heating member 120, and maintain the ambient temperature of the batteries 210. The first heating member 110 and the second heating member 120 are separated by the heat insulation member 130, so as to prevent interference and obstruction between the first heating member 110 and the second heating member 120 during heating. The heat insulation member 130 has a certain heat preservation and insulation effect. The encapsulating member 160 is arranged to mount and fix the heat insulation member 130, the first heating member 110 and the second heating member 120. When the first connecting member 140 is connected with the first heating member 110, and the second connecting member 150 is connected with the second heating member 120, the first heating member 110 and the second heating member 120 can have different heating rates, and the heating modes of the first heating member 110 and the second heating member 120 are independently operated.

[0039] For example, the first heating member 110 and the second heating member 120 can be battery 210 heating films. The battery 210 heating film has a film structure, and converts electrical energy into heat energy through electrical heating principle, so as to heat the battery 210 through the battery 210 heating film, and maintain the battery 210 within a preset temperature range. The battery 210 heating film can be embedded with a resistance wire. The material of the resistance wire can be copper, silicon carbide, nickel-chromium alloy or iron-chromium-aluminum alloy, etc. Of course, the battery 210 heating film can also adopt a conductive coating, which is not described herein. In addition, the heat insulation member 130 is arranged to isolate the first heating member 110 and the second heating member 120, so as to prevent interference or obstruction between the first heating member 110 and the second heating member 120.

[0040] It can be understood that the battery 210 can be a square structure battery 210, of course, the battery 210 can also be a battery 210 of other structural shapes, by setting the heat preservation assembly 100 between two adjacent batteries 210, so as to realize the heating and heat preservation effect of the plurality of batteries 210 by the heat preservation assembly 100, reduce the performance decline of the battery 210 due to temperature change, and improve the product performance and service life of the battery 210.

[0041] Reference Figure 1 As shown, the heat preservation assembly 100 has a first direction X and a second direction Y, wherein the first direction X and the second direction Y are vertically arranged. For example, the first direction X is in the thickness direction of the heat preservation assembly 100, and the second direction Y is in the length direction of the heat preservation assembly 100. It can be understood that the above definition is only for the purpose of understanding the relative position relationship of each part in the heat preservation assembly 100, and should not be understood as a limitation of the present application.

[0042] In one embodiment, optionally, as shown in Figure 1 and Figure 2 The first heating member 110 and the second heating member 120 are arranged in parallel, that is, the arrangement direction of the first heating member 110 and the arrangement direction of the second heating member 120 are parallel to each other, so as to make the first heating member 110 and the second heating member 120 abut the battery 210 and heat and preserve the battery 210. For example, the first heating member 110 and the second heating member 120 are arranged along the second direction Y.

[0043] Optionally, in combination with Figure 3 and Figure 4 The first heating member 110 and the second heating member 120 are both in a bent structure, so that the bent structure of the first heating member 110 and the second heating member 120 corresponds to the size and shape of the battery 210, so as to heat and preserve the battery 210. For example, as shown in Figure 3 The first heating member 110 and the second heating member 120 can both be a curved structure, that is, the heating wire of the first heating member 110 and the second heating member 120 can be bent into a specific curved shape, so as to better cover the surface of the battery 210 and realize uniform heating. In addition, as shown in 4, the first heating member 110 and the second heating member 120 can also be a frame structure, on the one hand, it is relatively simple to have a frame structure, and the first heating member 110 and the second heating member 120 can heat the battery 210, on the other hand, the first heating member 110 and the second heating member 120 can also heat the support frame of the battery 210, indirectly heating the battery 210, which can reduce the direct contact with the surface of the battery 210 and avoid local overheating.

[0044] Optionally, referring to Figure 1 andFigure 2 As shown, the first connecting piece 140 and the second connecting piece 150 are arranged in parallel or in series, and accordingly, when the first connecting piece 140 and the second connecting piece 150 are arranged in parallel, that is, the first connecting piece 140 is connected to the first heating piece 110, the first connecting piece 140 is used to supply power to the first heating piece 110, and the second connecting piece 150 is used to supply power to the second heating piece 120, the first connecting piece 140 and the second connecting piece 150 adopt a parallel mode, so that the first heating piece 110 and the second heating piece 120 have different heating rates; when the first connecting piece 140 and the second connecting piece 150 are arranged in series, that is, the first heating piece 110 and the second heating piece 120 can be heated by the first connecting piece 140 and the second connecting piece 150 respectively, the structure is simple and efficient, and has a better heating effect.

[0045] In an embodiment, optionally, the material of the heat insulation piece 130 is one of aerogel, microporous polypropylene, vacuum insulation board or ceramic fiber, and the aerogel, microporous polypropylene, vacuum insulation board or ceramic fiber all have a better heat insulation effect, wherein the aerogel is a porous solid material with extremely low density and high porosity, and has excellent heat insulation performance, the microporous polypropylene is a polypropylene material with small pores, and has a porous structure formed by a special manufacturing process, and has good heat insulation performance, the vacuum insulation board is a high-vacuum multilayer composite material composed of a core material and an encapsulating material, and the ceramic fiber is a fibrous material made of ceramic material.

[0046] In an embodiment, optionally, the material of the packaging piece 160 is one of polypropylene, polyethylene, polyimide, silica gel, epoxy resin or PET, and accordingly, the polypropylene, polyethylene, polyimide, silica gel, epoxy resin or PET makes the packaging piece 160 have better flexibility and impact resistance, and is not easy to be damaged, and also has strong chemical stability. Among them, the polypropylene and the polyethylene are both thermoplastic plastics, and have good mechanical properties and chemical stability, the polyimide is a high-performance engineering plastic, and has excellent mechanical properties and high-temperature resistance, the silica gel is an elastomer based on siloxane, and has good elasticity and temperature resistance, the epoxy resin is a thermosetting plastic, and forms a solid polymer network after crosslinking by a curing agent, and the PET (Polyethylene Terephthalate) is a thermoplastic plastic, and has good mechanical properties and transparency.

[0047] In an embodiment, optionally, the first heating element 110 has a projected area D1 on the heat insulation element 130, and the heat insulation element 130 has a side area Q, satisfying 0.3Q≤D1Q, that is, the vertical projection area D1 of the first heating element 110 on the heat insulation element 130 is smaller than the side area Q of the heat insulation element 130, so that the heat insulation element 130 can cover and wrap the first heating element 110, avoiding the situation that the first heating element 110 is exposed outside the heat insulation element 130, and in addition, the vertical projection area D1 of the first heating element 110 on the heat insulation element 130 is greater than or equal to 0.3Q of the side area of the heat insulation element 130, at this time, the first heating element 110 needs to have a certain size area compared with the heat insulation element 130, so as to abut against the battery 210 and heat and keep warm the battery 210, and the first heating element 110 and the battery 210 have sufficient contact area, improving the heat exchange rate and heat conduction rate of the first heating element 110.

[0048] In an embodiment, optionally, the second heating element 120 has a projected area D2 on the heat insulation element 130, and the heat insulation element 130 has a side area Q, satisfying 0.3Q≤D2Q, that is, the vertical projection area D1 of the second heating element 120 on the heat insulation element 130 is smaller than the side area Q of the heat insulation element 130, so that the heat insulation element 130 can cover and wrap the second heating element 120, avoiding the situation that the second heating element 120 is exposed outside the heat insulation element 130, and in addition, the vertical projection area D1 of the second heating element 120 on the heat insulation element 130 is greater than or equal to 0.3Q of the side area of the heat insulation element 130, the second heating element 120 has the same heating and keeping warm effect as the first heating element 110, and the second heating element 120 and the battery 210 have sufficient contact area, improving the heat exchange rate and heat conduction rate of the second heating element 120.

[0049] In summary, the heat preservation assembly 100 is used for heat preservation of the battery module 200, the heat preservation assembly 100 is arranged between two adjacent batteries 210, the first heating piece 110 is used for abutting with one battery 210, and the second heating piece 120 can abut with another battery 210, so that the first heating piece 110 and the second heating piece 120 are used for heat transfer of the battery 210, the ambient temperature of the battery 210 is kept, the first heating piece 110 and the second heating piece 120 are separated by the heat insulation piece 130, interference and obstruction between the first heating piece 110 and the second heating piece 120 are prevented when heating, the heat insulation piece 130 has a certain heat preservation and heat insulation effect, the packaging piece 160 is used for mounting and fixing the heat insulation piece 130, the first heating piece 110 and the second heating piece 120, when the first connecting piece 140 connects the first heating piece 110 and the second connecting piece 150 connects the second heating piece 120, the first heating piece 110 and the second heating piece 120 can have different heating rates, the heating modes of the first heating piece 110 and the second heating piece 120 are independently operated, and then the heating and heat preservation effect of the battery module 200 is improved.

[0050] The utility model further provides a battery module 200, reference Figure 5 As shown in the drawing, the battery module 200 includes the heat preservation assembly 100 described in any of the above embodiments, a plurality of batteries 210 are arranged side by side along the first direction X, and the heat preservation assembly 100 is arranged on the opposite sides of any battery 210, so that the battery 210 and the heat preservation assembly 100 are staggered, in other words, a plurality of batteries 210 are arranged along the thickness direction of the heat preservation assembly 100, so that the heat preservation assembly 100 is arranged on the opposite sides of each battery 210, and the common effect of a plurality of heat preservation assemblies 100 improves the heating and heat preservation effect of the battery module 200. The battery module 200 containing the heat preservation assembly 100 has all the beneficial effects of the heat preservation assembly 100, which will not be described in detail here.

[0051] The inventor of the present application found in research that when the temperature of the battery 210 at the edge position of the battery module 200 and the temperature of the battery 210 at the middle position have a temperature difference, the first heating piece 110 and the second heating piece 120 of the heat preservation assembly 100 have different heating rates, so as to heat and preserve the batteries 210 with different temperatures respectively, the heating and preserving speed of the batteries 210 is faster, the heating effect is better, the temperature of the battery module 200 is ensured to be in a predetermined temperature range, the performance of the batteries 210 in the battery module 200 due to temperature change is reduced, the product performance and service life of the battery module 200 are improved, in addition, the plurality of batteries 210 in the battery module 200 are separated by the heat preservation assembly 100, the heat preservation assembly 100 has a certain heat insulation and fireproof effect, the influence or damage of explosion and fire of a single battery 210 on other batteries 210 is avoided, and the safety performance of the battery module 200 is improved.

[0052] The utility model further provides a kind of electric equipment, and electric equipment includes the battery module 200 described in above embodiment, and the electric equipment containing battery module 200 has all beneficial effects of battery module 200, which will not be described in detail here.Electric equipment can be vehicle, portable device, ship, spacecraft etc.Spacecraft includes airplane, rocket, space shuttle and spacecraft etc., in addition, electric device can also be energy storage device, for example, energy storage cabinet, energy storage container etc.

[0053] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0054] The above-described embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it should not be understood as the limitation of the scope of the utility model. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.

Claims

1. A thermal insulation component, characterized in that, include: First heating element; A second heating element is disposed opposite to the first heating element; A heat insulation component, wherein the heat insulation component abuts between the first heating component and the second heating component; A first connector is connected to the first heating element; The second connector is connected to the second heating element; A package encapsulates the first heating element, the second heating element, and the heat insulation element.

2. The thermal insulation component according to claim 1, characterized in that, The first heating element and the second heating element are arranged in parallel.

3. The thermal insulation component according to claim 1, characterized in that, Both the first heating element and the second heating element are bent structures.

4. The thermal insulation component according to claim 1, characterized in that, The first connector and the second connector are arranged in parallel or in series.

5. The thermal insulation component according to claim 1, characterized in that, The insulation component is made of one of the following materials: aerogel, microporous polypropylene, vacuum insulation board, or ceramic fiber.

6. The thermal insulation component according to claim 1, characterized in that, The encapsulation component is made of one of the following materials: polypropylene, polyethylene, polyimide, silicone, epoxy resin, or PET.

7. The thermal insulation component according to any one of claims 1 to 6, characterized in that, The first heating element has a projected area D1 on the heat insulation element, and one side area of ​​the heat insulation element is Q, satisfying: 0.3Q≤D1<Q.

8. The thermal insulation component according to any one of claims 1 to 6, characterized in that, The projected area D2 of the second heating element on the heat insulation element, and the area of ​​one side of the heat insulation element is Q, satisfy: 0.3Q≤D2<Q.

9. A battery module, characterized in that, It includes a plurality of batteries and a heat-insulating component as described in any one of claims 1 to 8, wherein the plurality of batteries are arranged side by side along a first direction, and the heat-insulating component is provided on both opposite sides of any one of the batteries, so that the batteries and the heat-insulating component are arranged alternately.

10. An electrical appliance, characterized in that, Includes the battery module as described in claim 9.

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