Soft package battery module thermal protection structure

Abstract

The utility model discloses a soft package battery module thermal protection structure which comprises a detachable structure capable of containing a battery module, a module thermal protection system, the battery module and a module cold plate, the battery module is located in the detachable structure capable of containing the battery module, and the module cold plate and the module thermal protection system are further arranged outside the battery module. The module thermal protection system comprises a battery module isolation plate, a battery module insulation sheet and a battery module thermal protection pad. The module provided by the utility model adopts a multi-layer thermal protection arrangement, thermal protection is respectively arranged inside the battery module, among the battery modules and outside the module, and thermal diffusion is blocked by triple thermal protection. The thermal protection structure in the module is orderly in arrangement hierarchy, compact in structure, high in space utilization rate, high in integration and high in implementation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery safety technical field, concretely relates to a soft package battery module heat protection structure. BACKGROUND

[0002] Soft package lithium battery, usually refers to the aluminum plastic composite film packaging lithium battery of shell. Because its light weight, the lower cost of opening mould, the advantages such as safety. Because lithium battery is in normal work, the middle temperature is higher, the bottom temperature is lower, on the one hand, the heat generated by battery is discharged to guarantee that the maximum temperature and temperature difference of battery are within the allowable range under normal working condition. On the other hand, once a battery triggers thermal runaway, the heat generated by thermal runaway battery should be avoided to spread to the surrounding battery, and the heat should be avoided to spread to the surrounding battery, so as to avoid triggering thermal runaway of the surrounding battery, and the risk of large-scale fire or explosion.

[0003] However, with the increase of battery specific energy and the continuous increase of battery size design, the risk of single battery thermal runaway also increases, and when single battery thermal runaway occurs, it will cause battery module and the whole battery pack system to trigger thermal runaway, resulting in fire and explosion accident.

[0004] The prior art has the following problems:

[0005] 1. The heat of the traditional soft package battery module diffuses disorderly, and thermal runaway easily occurs.

[0006] 2. The existing soft package battery heat protection assembly is low in integration, and the space utilization rate of the battery pack is low. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a soft package battery module heat protection structure to solve the technical problems of low integration, low space utilization rate of battery pack and easy thermal runaway in the prior art.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0009] The utility model provides a soft package battery module heat protection structure, which comprises a detachable structure capable of accommodating a battery module, a module heat protection system, a battery module and a module cold plate, the battery module is located inside the detachable structure capable of accommodating the battery module, the battery module is further provided with the module cold plate and the module heat protection system outside, the module heat protection system comprises a battery module isolation plate, a battery module insulating sheet and a battery module heat protection pad.

[0010] Further, the module cold plate is internally flowed through by cooling liquid, the module cold plate cools / heats the module cell, the outer surface of the module cold plate is coated with high-performance insulating paint, and the two sides have heat-conducting glue on the large surface.

[0011] Further, the detachable structure capable of accommodating the battery module is composed of a module end plate, a module U shell and a module cover plate, the module end plate is located at both ends of the battery module, the module U shell is located below the battery module, and the module cover plate is located above the battery module.

[0012] Further, the module U shell is externally provided with a module U shell thermal protection pad made of composite aerogel.

[0013] Further, the battery module is composed of single soft package battery cells and a thermal insulation protection layer, the thermal insulation protection layer divides a single battery module into four parallel modules to insulate heat transfer between adjacent modules.

[0014] Further, the single soft package battery cells are fixed by double-sided adhesive tape, and the thermal insulation protection layer is made of composite aerogel and plastic particle foamed foam.

[0015] Further, the battery module isolation plate is arranged between the battery module and the module end plate.

[0016] Further, the battery module insulation sheet is installed at the limiting structure at the top of the module end plate, the battery module insulation sheet is made of mica plate, and the battery module insulation sheet has adhesive tape and is bonded at the limiting structure of the module end plate.

[0017] Further, the battery module includes a plurality of battery modules.

[0018] Based on the above technical solutions, the embodiments of the present application can at least produce the following technical effects:

[0019] (1) The soft package battery module thermal protection structure has ordered arrangement of internal thermal protection structure, compact structure, high space utilization and high integration.

[0020] (2) The soft package battery module thermal protection structure has three-layer thermal protection, which is arranged inside the battery module, between the battery modules and outside the module, and can block heat diffusion.

[0021] (3) The soft package battery module thermal protection structure is provided with an insulating sheet at the module end plate, so that the gap between the module output pole and the end plate is prevented from becoming small after thermal runaway, arc is prevented from occurring, and thermal runaway is prevented from being aggravated. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without creative labor.

[0023] Fig. 1 is a structural schematic view of the embodiment of the present application;

[0024] Fig. 2 is an exploded view of the embodiment of the present application;

[0025] Fig. 3 is an exploded view of the small module battery cell of the embodiment of the present application;

[0026] In the figure: 1, battery module; 11, single soft package battery cell; 12, thermal insulation protection layer; 2, module cold plate; 3, module end plate; 4, module U shell; 5, module cover plate; 6, battery module isolation plate; 7, battery module insulating sheet; 8, battery module thermal protection pad; 9, module U shell thermal protection pad. DETAILED DESCRIPTION

[0027] The technical solutions of the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] 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, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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; unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Embodiment 1

[0030] As Figs. 1-3 shown, the utility model provides a kind of soft package battery module thermal protection structure, including the detachable structure that can hold battery module 1, module thermal protection system, battery module 1, module cold plate 2, the battery module 1 is located in the detachable structure inside that can hold battery module 1, battery module 1 outside is equipped with module cold plate 2 and module thermal protection system, the module thermal protection system includes battery module isolation plate 6, battery module insulating sheet 7, battery module thermal protection pad 8.

[0031] In the embodiment, the detachable structure that can hold battery module 1 is composed of module end plate 3, module U shell 4, module cover plate 5, the module end plate 3 is located at both ends of battery module 1, the module U shell 4 is located below battery module 1, and the module cover plate 5 is located above battery module 1.

[0032] In the embodiment, the module U shell 4 is provided with a module U shell thermal protection pad 9, and the module U shell thermal protection pad 9 is made of composite aerogel.

[0033] In the embodiment, the battery module 1 is composed of single soft package battery cell 11 and heat insulation protection layer 12, the heat insulation protection layer 12 divides single battery module 1 into four parallel modules, and insulates heat transfer between adjacent modules.

[0034] In the embodiment, the single soft package battery cell 11 is fixed by double-sided adhesive tape, and the heat insulation protection layer 12 is made of composite aerogel and plastic particle foamed foam.

[0035] In the embodiment, the battery module isolation plate 6 is arranged between the battery module 1 and the module end plate 3.

[0036] In this embodiment, the battery module insulation sheet 7 is installed at the limiting structure on the top of the module end plate 3, and the battery module insulation sheet 7 is made of mica plate.

[0037] In this embodiment, the battery module 1 includes a plurality of battery modules 1.

[0038] Embodiment 2

[0039] The utility model provides a kind of soft package battery module thermal protection structure, including the detachable structure of being able to accommodate battery module 1, module thermal protection system, battery module 1, module cold plate 2, the battery module 1 is located inside the detachable structure of being able to accommodate battery module 1, battery module 1 outside is also equipped with module cold plate 2 and module thermal protection system, the module thermal protection system includes battery module isolation plate 6, battery module insulation sheet 7, battery module thermal protection pad 8.

[0040] In this embodiment, the detachable structure capable of accommodating battery module 1 is composed of two module U shells 4, and the battery module 1 is accommodated inside.

[0041] In this embodiment, the module U shell 4 is provided with a module U shell thermal protection pad 9, and the module U shell thermal protection pad 9 is made of composite aerogel.

[0042] In this embodiment, the battery module 1 is composed of single soft package battery cell 11 and heat insulation protection layer 12, the heat insulation protection layer 12 divides a single battery module 1 into four parallel modules, and isolates the heat transfer between adjacent modules.

[0043] In this embodiment, the single soft package battery cell 11 is fixed by double-sided adhesive, and the heat insulation protection layer 12 is made of composite aerogel and plastic particle foamed foam.

[0044] In this embodiment, the battery module isolation plate 6 is arranged between the battery module 1 and the module U shell 4.

[0045] In this embodiment, the battery module insulation sheet 7 is installed between the two module U shells 4 and adheres the two module U shells 4, and the battery module insulation sheet 7 is made of mica plate.

[0046] In this embodiment, the battery module 1 includes a plurality of battery modules 1.

[0047] The structure, function and connection form disclosed herein can be realized by other means. For example, the above-described embodiments are only illustrative, for example, a plurality of components can be combined or integrated into another component; in addition, the functional components in each embodiment herein can be integrated into one functional component, or each functional component can exist physically, or two or more functional components can be integrated into one functional component.

[0048] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the inventive concept, some modifications and improvements can be made, and these all fall within the protection scope of the present application.

Claims

1. A thermal protection structure for a soft-pack battery module, characterized in that, Including the detachable structure capable of accommodating the battery module (1), the module thermal protection system, the battery module (1), the module cold plate (2), the battery module (1) is located inside the detachable structure capable of accommodating the battery module (1), the battery module (1) is further provided with module cold plate (2) and module thermal protection system, the module thermal protection system includes battery module isolation plate (6), battery module insulation sheet (7), battery module thermal protection pad (8). 2.The soft-pack battery module thermal protection structure of claim 1, wherein, The detachable structure capable of accommodating the battery module (1) is composed of module end plate (3), module U shell (4), module cover plate (5), the module end plate (3) is located at both ends of the battery module (1), the module U shell (4) is located below the battery module (1), the module cover plate (5) is located above the battery module (1). 3.The soft-pack battery module thermal protection structure of claim 2, wherein, The module U shell (4) is provided with module U shell thermal protection pad (9), the module U shell thermal protection pad (9) is made of composite aerogel. 4.The soft-pack battery module thermal protection structure of claim 1, wherein, The battery module (1) is composed of single soft pack battery cell (11) and heat insulation protection layer (12), the heat insulation protection layer (12) divides a single battery module (1) into four parallel modules, and the heat insulation protection layer (12) insulates the heat transfer between adjacent modules.

5. The pouch battery module thermal protection structure according to claim 4, characterized by, The single soft pack battery cell (11) is fixed by double-sided adhesive tape, and the heat insulation protection layer (12) is made of composite aerogel and plastic particle foamed foam. 6.The soft-pack battery module thermal protection structure of claim 1, wherein, The battery module isolation plate (6) is arranged between the battery module (1) and the module end plate (3). 7.The soft-pack battery module thermal protection structure of claim 1, wherein, The battery module insulation sheet (7) is installed at the limiting structure on the top of the module end plate (3), and the battery module insulation sheet (7) is made of mica plate. 8.The soft-pack battery module thermal protection structure of claim 1, wherein, The battery module (1) includes a plurality of battery modules (1).

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