Economical, environment-friendly and high-flame-retardant battery connecting cable for electrochemical energy storage system

Abstract

The utility model discloses an economic environment-friendly high-flame-retardant battery connecting cable for an electrochemical energy storage system, which belongs to the technical field of energy storage cables and comprises a heat-resistant insulating layer, a plurality of clusters of aluminum alloy conductors tightly abutted against each other are wrapped in the heat-resistant insulating layer, and a mineral insulating fire-resistant layer is arranged on the outer wall of the heat-resistant insulating layer. The outer wall of the mineral insulation fireproof layer is provided with a heat insulation flame-retardant layer, and the outer wall of the heat insulation flame-retardant layer is provided with a high flame-retardant protective layer. The energy storage cable has the beneficial effects that a plurality of flame-retardant structures are cooperatively matched, the excellent flame-retardant performance of the finished cable is finally realized, meanwhile, the advantages of softness, economy, environmental protection and the like are considered, and an economical, safe and reliable energy storage cable is provided for the field of energy storage.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage cable technical field especially relates to a kind of battery connecting cable for economic environmental protection high flame-retardant electrochemical energy storage system. BACKGROUND

[0002] With the rapid development of power storage industry, energy transformation has shown irreversible trend in the world. At present, the minimum unit price of energy storage system in the industry is less than 0.5 yuan / Wh, which puts forward higher requirements for the economy of energy storage components. As an important part of energy storage system, energy storage cable is widely used in the connection between battery clusters and the direct current side between battery clusters and converter, playing the role of current collection and transmission of electric energy.

[0003] In practical application, it is often encountered that multiple energy storage cables are laid side by side in energy storage cabinet or energy storage container, which puts forward higher requirements for the flame retardant performance of cable.

[0004] The existing energy storage cable is difficult to realize high flame retardant characteristics, which restricts the quality improvement of energy storage system, and also brings safety hazards to the stable operation of energy storage system. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the above problems and provides a kind of battery connecting cable for economic environmental protection high flame-retardant electrochemical energy storage system.

[0006] The utility model realizes the above-mentioned purposes by the following technical solutions:

[0007] A kind of battery connecting cable for economic environmental protection high flame-retardant electrochemical energy storage system, including heat-resistant insulation layer, multiple clusters of aluminum alloy conductors are covered in heat-resistant insulation layer and tightly abut, the outer wall of heat-resistant insulation layer is provided with mineral insulation fireproof layer, the outer wall of mineral insulation fireproof layer is provided with heat insulation flame-retardant layer, and the outer wall of heat insulation flame-retardant layer is provided with high flame-retardant protective layer.

[0008] Preferably, the aluminum alloy conductor is made of 5 type aluminum alloy material.

[0009] Preferably, the heat-resistant insulation layer is made of 125 DEG C heat-resistant radiation crosslinking polyolefin material.

[0010] Preferably, the mineral insulation fireproof layer is made of calcined mica material.

[0011] Preferably, the heat insulation flame-retardant layer is wrapped with basalt fiber.

[0012] Preferably, the high flame-retardant protective layer is made of high oxygen index high flame-retardant radiation crosslinking polyolefin.

[0013] The beneficial effect lies in: adopting multiple flame-retardant structures to cooperate, finally realizing excellent flame-retardant performance of finished cable, while giving consideration to softness, economy, environmental protection and the like, and providing an economic, safe and reliable energy storage cable for the energy storage field.

[0014] The additional technical features and advantages of the utility model will be more obvious in the following description, or can be understood through the specific practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with the following specific embodiments, but do not constitute the limitation to the utility model.In the drawings:

[0016] Figure 1 It is the schematic diagram of the battery connecting cable of the economic and environmental protection high flame-retardant electrochemical energy storage system of the utility model.

[0017] The signs are explained as follows: 1, aluminum alloy conductor;2, heat-resistant insulation layer;3, mineral insulation fire-resistant layer;4, heat-insulating flame-retardant layer;5, high flame-retardant sheath. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0019] In the description of the utility model, it is understood that the terms 'up', 'down', 'front', 'back', 'left', 'right', 'top', 'bottom', 'in', 'out' 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 utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation to the utility model.

[0020] The utility model will be further described below in combination with the drawings:

[0021] As Figure 1 It is shown that an economic and environmental protection high flame-retardant electrochemical energy storage system battery connecting cable, including heat-resistant insulation layer 2, heat-resistant insulation layer 2 adopts 125 DEG C heat-resistant radiation crosslinking polyolefin material, and the insulating property, heat resistance is good, and the mechanical performance is excellent, and green, halogen-free and non-toxic, meet the requirement of energy storage system to environmental protection.

[0022] The heat-resistant insulation layer 2 is wrapped with a plurality of clusters of tightly abutting aluminum alloy conductors 1, which are made of 5-type aluminum alloy material, thereby ensuring softness while greatly reducing cost and improving product economy.

[0023] The outer wall of the heat-resistant insulation layer 2 is provided with a mineral insulation fire-resistant layer 3 made of calcined mica material, which mainly comprises mineral insulation material and has excellent fire resistance and stable physical properties under flame combustion, thereby effectively isolating the internal combustible material from external flame.

[0024] The outer wall of the mineral insulation fire-resistant layer 3 is provided with a heat-insulating and flame-retardant layer 4 wrapped with basalt fiber, which is the main material of fireproof blanket and has the advantages of non-combustibility, flame-retardant smokelessness, high temperature resistance, no toxic gas emission, good thermal insulation, high strength, no thermal shrinkage, etc., and can effectively protect the internal structure of the cable under external flame and high temperature without deformation and explosion.

[0025] The outer wall of the heat-insulating and flame-retardant layer 4 is provided with a high flame-retardant protective layer 5 made of high oxygen index and high flame-retardant irradiation cross-linked polyolefin, which adopts a high-efficiency synergistic flame retardant system in the base material of olefin resin and other elastomer resins, and selects antimony trioxide, zinc borate, and aluminum hydroxide flame retardants for mixing according to different flame-retardant mechanisms. Zinc borate is a strong carbon formation promoter, and the generation of carbon can convert the protective layer polymer into carbon in the condensate without smoke and combustion in the gas phase combustion process. At the same time, it is a smoke suppression flame retardant, but has afterglow (i.e. non-flame combustion) during combustion, and zinc borate is an afterglow inhibitor, and the combination of the two has extremely strong synergistic flame-retardant effect. Since antimony trioxide has little effect on carbon formation, the flame-retardant effect of zinc borate and antimony trioxide is better than that of antimony trioxide alone, which can reduce smoke by 25%. The above-mentioned antimony trioxide, zinc borate, and aluminum hydroxide flame retardants are all environmentally friendly and halogen-free materials, and provide synergistic cooperation and irradiation cross-linking, which can realize the protective layer material with high oxygen index and flame-retardant performance.

[0026] Working principle: firstly, according to the process, the aluminum alloy conductor 1 is drawn, bundled and re-twisted, then the heat-resistant insulation layer 2 is extruded and wrapped outside the aluminum alloy conductor 1, the heat-resistant insulation layer 2 adopts irradiation crosslinking polyolefin material, forms the insulated wire core, then the insulated wire core is subjected to electron accelerator irradiation crosslinking reaction, improves the heat resistance and mechanical properties, the mineral insulated refractory layer 3 is wrapped outside the insulated wire core, the mineral insulated refractory layer 3 adopts calcined mica tape double-layer wrapping, the wrapping overlap rate is 40%-50%, then the heat-insulating flame-retardant layer 4 is wrapped outside the mineral insulated refractory layer 3, the heat-insulating flame-retardant layer 4 adopts basalt fiber tape single-layer wrapping, the wrapping overlap rate is 20%-25%, then the high flame-retardant protective layer 5 is extruded and wrapped outside the heat-insulating flame-retardant layer 4, the high flame-retardant protective layer 5 adopts high oxygen index high flame-retardant irradiation crosslinking polyolefin material, the extrusion mode adopts extrusion type, ensures that the protective layer is tightly wrapped, finally, the cable is subjected to electron accelerator irradiation crosslinking reaction, improves the heat resistance and mechanical properties of the outer protective layer.

[0027] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, the above examples and the description in the specification are only to illustrate the principle of the utility model, without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, these changes and improvements all fall into the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly, economical, high flame retardant battery connecting cable for electrochemical energy storage systems, characterized in that: The application relates to a heat-resistant insulated layer (2) which is tightly wrapped with aluminum alloy conductors (1) in a plurality of clusters, the outer wall of the heat-resistant insulated layer (2) is provided with a mineral insulation fireproof layer (3), the outer wall of the mineral insulation fireproof layer (3) is provided with a heat-insulating flame-retardant layer (4), and the outer wall of the heat-insulating flame-retardant layer (4) is provided with a high flame-retardant protective layer (5).

2. An economical, environmentally friendly, high flame retardant battery connecting cable for electrochemical energy storage systems according to claim 1, characterized in that: The aluminum alloy conductors (1) adopt 5-type aluminum alloy materials.

3. The battery connecting cable for the economic, environmental protection and high flame retardant electrochemical energy storage system according to claim 1, characterized in that: The heat-resistant insulated layer (2) adopts 125 DEG C heat-resistant radiation crosslinking polyolefin materials.

4. The environmentally friendly and economic high flame retardant battery connecting cable for electrochemical energy storage system according to claim 1, characterized in that: The mineral insulation fireproof layer (3) adopts calcined mica materials.

5. The environmentally friendly, high flame resistant, and cost-effective battery connecting cable for electrochemical energy storage systems according to claim 1, characterized in that: The heat-insulating flame-retardant layer (4) adopts basalt fiber wrapping.

6. The battery connecting cable for economic, environmentally friendly, high flame- retardant electrochemical energy storage systems according to claim 1, characterized in that: The high flame-retardant protective layer (5) adopts high oxygen index high flame-retardant radiation crosslinking polyolefin.

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