阅读说明：本技术 一种高效散热型锂电池 (High-efficient heat dissipation type lithium cell ) 是由 宋智勇 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种高效散热型锂电池,包括电池外壳和安装在电池外壳内部用于分隔电池内部电解液的内隔膜,所述电池外壳的外部包裹有包覆层,所述电池外壳的端部贯穿插设有多个冷却管,所述包覆层的内壁开设有与多个冷却管一一对应的交换腔,每个所述交换腔的内壁均固定有用于将交换腔分隔成主动腔和从动腔两部分的隔板,每个所述冷却管的两端均与对应从动腔两端连通。优点在于：锂电池在使用过程中不断地产生热量,产生的热量将传递至包覆层,进而被主动腔内的蒸发液吸收,使得蒸发液受热不断的蒸发成气态,通过蒸发液的蒸发吸热过程完成对电池内部热量的快速吸收,实现对电池内部热量快速散发,进而提高电池整体的散热效率。(The invention discloses a high-efficiency heat-dissipation lithium battery which comprises a battery shell and an inner diaphragm arranged in the battery shell and used for separating electrolyte in the battery, wherein a coating layer is wrapped outside the battery shell, a plurality of cooling pipes are inserted into the end part of the battery shell in a penetrating manner, exchange cavities corresponding to the cooling pipes one by one are formed in the inner wall of the coating layer, a partition plate used for dividing the exchange cavities into a driving cavity and a driven cavity is fixed on the inner wall of each exchange cavity, and two ends of each cooling pipe are communicated with two ends of the corresponding driven cavity. Has the advantages that: the lithium cell constantly produces the heat in the use, and the heat of production will transmit to the coating, and then is absorbed by the evaporating liquid of initiative intracavity for the evaporating liquid is heated continuous evaporation and becomes the gaseous state, accomplishes the quick absorption to the inside heat of battery through the evaporation heat absorption process of evaporating liquid, realizes giving off the inside heat of battery fast, and then improves the holistic radiating efficiency of battery.)

1. The utility model provides a high-efficient heat dissipation type lithium cell, includes battery case (1) and installs at battery case (1) inside inner diaphragm (3) that is used for separating battery inside electrolyte, its characterized in that, the outside parcel of battery case (1) has coating (2), the tip of battery case (1) is run through and is inserted and be equipped with a plurality of cooling tubes (4), the inner wall of coating (2) is seted up and is exchanged chamber (6) with a plurality of cooling tubes (4) one-to-one correspondence, every the inner wall of exchanging chamber (6) all is fixed with and is used for separating exchanging chamber (6) into the baffle (7) of initiative chamber and driven chamber two parts, the both ends of every cooling tube (4) all communicate with corresponding driven chamber both ends, one side that battery case (1) was kept away from in the initiative chamber is fixed with backward flow board (8), backward flow board (8) are close to the one end of battery case (1) and have seted up a plurality of backward flow, every reflux groove (12) inner wall all is fixed with check valve (14), the lateral wall of reflux plate (8) and baffle (7) is fixed with water-stop film (15) jointly, the lateral wall of reflux plate (8) runs through capillary (13) of seting up a plurality of and reflux groove (12) intercommunication, the lateral wall of baffle (7) runs through to rotate and is connected with pivot (9), pivot (9) are located one section circumference lateral wall of initiative intracavity and are fixed with a plurality of initiative commentaries on classics leaf (10), pivot (9) are located one section circumference lateral wall of slave cavity and are fixed with a plurality of slave leaf (11).

2. The lithium battery with high efficiency and heat dissipation as recited in claim 1, wherein a circumferential side wall of each cooling tube (4) is provided with a central through hole (41) for electrolyte to flow through, two side walls of the central through hole (41) are jointly fixed with an expansion bag (5) connected with the interior of the cooling tube (4), and the expansion bag (5) is made of a corrosion-resistant elastic rubber material.

3. The lithium battery as claimed in claim 1, wherein the driving chamber is filled with a low-boiling-point evaporation liquid, the driven chamber and the cooling tube (4) are filled with a cooling liquid, and the water-barrier film (15) is a water-barrier and gas-permeable film.

Technical Field

The invention relates to the technical field of lithium batteries, in particular to a high-efficiency heat-dissipation lithium battery.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a nonaqueous electrolyte solution; lithium batteries are roughly classified into lithium metal batteries and lithium ion batteries; lithium ion batteries do not contain lithium in the metallic state and are rechargeable.

Lithium ion battery obtains extensive application because its chargeable superior nature, and lithium ion battery also leads to the fact certain influence to self because a large amount of heats that its charge-discharge process produced equally, and cause the explosion easily when lithium ion battery is overheated, seriously influence the security of using, the development to lithium ion battery causes the restriction, current lithium ion battery all dispels the heat or self dispels the heat through the louvre, the low heat accumulation of the low heat of battery's radiating efficiency, can not satisfy the demand of using for a long time, consequently need a lithium cell that can high-efficient heat dissipation in order to satisfy people's user demand urgently.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, a lithium battery is slow in heat dissipation, rapid in heat accumulation and easy to explode, and provides a high-efficiency heat dissipation type lithium battery.

In order to achieve the purpose, the invention adopts the following technical scheme: a high-efficiency heat-dissipation lithium battery comprises a battery shell and an inner diaphragm arranged in the battery shell and used for separating electrolyte in the battery, wherein the battery shell is wrapped by a coating layer, the end part of the battery shell is inserted with a plurality of cooling pipes in a penetrating way, the inner wall of the coating layer is provided with exchange cavities corresponding to the cooling pipes one by one, the inner wall of each exchange cavity is fixedly provided with a partition plate used for separating the exchange cavity into a driving cavity and a driven cavity, the two ends of each cooling pipe are communicated with the two ends of the corresponding driven cavity, one side of the driving cavity, which is far away from the battery shell, is fixedly provided with a reflux plate, one end of the reflux plate, which is close to the battery shell, is provided with a plurality of reflux grooves, the inner wall of each reflux groove is fixedly provided with a one-way valve, the reflux plate and the side wall of the partition plate are jointly fixed with a water-resisting film, and the side wall, the lateral wall through rotation of baffle is connected with the pivot, the pivot is located one section circumference lateral wall of initiative intracavity and is fixed with a plurality of initiative commentaries on classics leaf, the pivot is located one section circumference lateral wall of slave cavity and is fixed with a plurality of slave commentaries on classics leaf.

In the efficient heat dissipation type lithium battery, the circumferential side wall of each cooling pipe is provided with a middle through hole for electrolyte circulation, the two side walls of the middle through holes are jointly fixed with expansion bags communicated with the inside of the cooling pipe, and the expansion bags are made of corrosion-resistant elastic rubber materials.

In the efficient heat dissipation type lithium battery, the driving cavity is filled with low-boiling-point evaporating liquid, the driven cavity and the cooling tube are filled with cooling liquid, and the waterproof film is a waterproof and breathable film.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the lithium battery continuously generates heat in the using process, the generated heat is transferred to the coating layer and then absorbed by the evaporating liquid in the active cavity, so that the evaporating liquid is heated and continuously evaporated into a gaseous state, the rapid absorption of the heat in the battery is completed through the evaporation and heat absorption process of the evaporating liquid, the rapid dissipation of the heat in the battery is realized, and the overall heat dissipation efficiency of the battery is further improved;

2. according to the invention, the evaporated gaseous evaporating liquid crosses the water-resisting film to contact with the outer side of the coating layer, so that the gaseous evaporating liquid transfers heat to outside air and then is condensed into a liquid state, then enters the reflux groove through the capillary holes, and flows back to an initial position through the one-way valve after being accumulated in the reflux groove, a cyclic and reciprocating heat exchange process is formed, and a continuous and effective heat dissipation effect is provided;

3. according to the invention, when the evaporation liquid is heated and evaporated into a gaseous state, along with the continuous increase of the flow of the evaporation liquid, the airflow can continuously push the driving rotating blade to rotate, so that the rotating shaft is driven to rotate, the driven rotating blade rotates in the driven cavity, the cooling liquid in the driven cavity is continuously pushed to the inside of the cooling pipe, the cooling liquid absorbing the heat in the battery is pushed to the driven cavity, the cooling liquid absorbing the heat in the battery is subjected to rapid heat exchange with the external environment, the heat in the battery is rapidly dissipated through the circulating flow of the cooling liquid, and the integral heat dissipation efficiency is improved;

4. when the cold area liquid in the driven cavity enters the cooling pipe, the original cooling liquid in the cooling pipe is pushed and extruded, so that the pressure in the cooling pipe is increased, the expansion bag is pressed and expanded to block the through hole to a certain degree, the flowing speed of ions in the battery is reduced, the heating speed of the battery is reduced fundamentally, and the quick heat dissipation and cooling of the battery are realized.

Drawings

Fig. 1 is a schematic structural diagram of a high-efficiency heat-dissipation lithium battery according to the present invention;

FIG. 2 is an axial side view of a high efficiency heat dissipating lithium battery in accordance with the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is a structural sectional view of a cooling pipe portion in the present invention.

In the figure: 1 battery shell, 2 coating layers, 3 inner membranes, 4 cooling pipes, 41 through holes, 5 expansion bags, 6 exchange cavities, 7 partition plates, 8 reflux plates, 9 rotating shafts, 10 driving rotating blades, 11 driven rotating blades, 12 reflux grooves, 13 capillary holes, 14 one-way valves and 15 water-stop membranes.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.