Super wide high security lithium ion power battery system in temperature domain
阅读说明：本技术 一种超宽温域高安全性锂离子动力电池系统 (Super wide high security lithium ion power battery system in temperature domain ) 是由 郭军平 史新明 于维 卞俊 刘通 靳一玲 于 2019-02-21 设计创作，主要内容包括：本发明公开了一种超宽温域高安全性锂离子动力电池系统,包括电池箱上盖、上层格栅液冷板、下层格栅液冷板、电池箱体,在电池箱体的顶部设置有电池箱上盖,在电池箱体内设置有至少一组电池模组,该电池模组旁采用模组支架,其内设置有单体电芯,所述的电池模组和电池箱上盖之间设置有上层格栅液冷板,采用上层格栅液冷板和下层格栅液冷板,有效的将锂离子电池系统中的电池模组的热量进行散出,有效地消除了现有技术中锂离子动力电池系统通过软包锂电池自身散热的缺陷。(The invention discloses a super-wide temperature range high-safety lithium ion power battery system which comprises a battery box upper cover, an upper grid liquid cooling plate, a lower grid liquid cooling plate and a battery box body, wherein the battery box upper cover is arranged at the top of the battery box body, at least one group of battery modules are arranged in the battery box body, a module bracket is adopted beside each battery module, a single battery cell is arranged in each module, the upper grid liquid cooling plate is arranged between each battery module and the battery box upper cover, and the upper grid liquid cooling plate and the lower grid liquid cooling plate are adopted to effectively dissipate heat of the battery modules in the lithium ion power battery system, so that the defect that the lithium ion power battery system dissipates heat through a soft package lithium battery in the prior art is effectively overcome.)
1. The utility model provides a high security lithium ion power battery system in super wide temperature domain, includes battery box upper cover, upper grid liquid cooling board, lower floor's grid liquid cooling board, battery box, its characterized in that: be provided with the battery box upper cover at the top of battery box, be provided with at least a set of battery module in the battery box, the other module support that adopts of battery module is provided with monomer electricity core in it, battery module and battery box upper cover between be provided with upper grid liquid cooling board, be provided with upper heat conduction silica gel pad at upper grid liquid cooling board downside, be provided with lower floor's heat conduction silica gel pad at the downside of battery module, be provided with lower floor's grid liquid cooling board at lower floor's heat conduction silica gel pad downside, the battery box on be provided with liquid outlet and inlet, install battery management system at the battery box inboard.
2. The ultra-wide temperature range high safety lithium ion power battery system of claim 1, wherein: be provided with the aluminium board at monomer electricity core downside, be provided with the busbar on monomer electricity core and weld the interface, busbar welds interface one side and is provided with anodal busbar, busbar weld the interface and set up towards the module support.
3. The ultra-wide temperature range high safety lithium ion power battery system of claim 2, wherein: the aluminum plate is an aluminum snake-shaped plate, and the aluminum snake-shaped plate is distributed on the module support and is close to the position of the bus bar welding interface.
4. The ultra-wide temperature range high safety lithium ion power battery system of claim 3, wherein: the aluminum snake-shaped plate is provided with a through hole, and the outer surface of the aluminum snake-shaped plate is covered with a heat conducting film.
5. The ultra-wide temperature range high safety lithium ion power battery system of claim 4, wherein: the heat conducting film is any one of a heat conducting graphite film, a heat conducting silica gel sheet, a high heat conducting polyimide film and a graphene heat conducting film.
6. The ultra-wide temperature range high safety lithium ion power battery system of claim 3, wherein: the snake-shaped radian on the aluminum snake-shaped plate is attached to the outer surface of the monomer battery cell.
7. The ultra-wide temperature range high safety lithium ion power battery system of claim 1, wherein: the upper-layer grating liquid cooling plate and the lower-layer grating liquid cooling plate are hollow aluminum plates, and snake-shaped return pipes are arranged in the upper-layer grating liquid cooling plate and the lower-layer grating liquid cooling plate.
8. The ultra-wide temperature range high safety lithium ion power battery system of claim 2, wherein: the positive electrode bus bar is an L-shaped plane.
Technical Field
The invention relates to a battery system, in particular to a lithium ion power battery system with ultra-wide temperature range and high safety.
Background
With the progress of the times, the number of automobiles is greatly increased, the high-speed development of human social economy and modern civilization is promoted, meanwhile, the serious energy and environment problems are brought, energy conservation and environmental protection become one of the subjects of automobile technology development, and new energy automobiles gradually enter the daily life of people along with the pursuit of low-carbon life.
As the heart of a new energy automobile, the working performance and the service life of a power battery system are greatly influenced by the ambient temperature, and when the power battery system is charged at low temperature, because lithium ions are difficult to be embedded into a negative electrode graphite layer, the internal polarization of the battery is increased, and the battery cannot be charged; or lithium ions are deposited on the surface of the negative electrode to form lithium dendrites, so that potential safety hazards are caused, the performance of the battery is greatly attenuated during low-temperature discharge, and under the condition of high temperature, the battery pack rapidly loses working capacity due to rapid attenuation of battery capacity caused by a large amount of irreversible side reactions inside the battery, and even the battery can be further ignited and exploded due to the fact that heat inside the battery cannot be dissipated.
Disclosure of Invention
The invention provides a lithium ion power battery system with ultra-wide temperature range and high safety by adopting a grid liquid cooling plate technology, aiming at overcoming the defects that the lithium ion power battery system in the prior art is low in overall heat dissipation efficiency, is not suitable for use in the ultra-wide temperature range and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a high security lithium ion power battery system in super wide temperature range, includes battery box upper cover, upper grid liquid cooling board, lower floor's grid liquid cooling board, battery box, is provided with the battery box upper cover at the top of battery box, is provided with at least a set of battery module in the battery box, the other module support that adopts of battery module, is provided with monomer electricity core in it, battery module and battery box upper cover between be provided with upper grid liquid cooling board, be provided with upper heat conduction silica gel pad at upper grid liquid cooling board downside, be provided with lower floor's heat conduction silica gel pad at the downside of battery module, be provided with lower floor's grid liquid cooling board at lower floor's heat conduction silica gel pad battery box on be provided with liquid outlet and inlet, install battery management system in battery box inboard.
Foretell high security lithium ion power battery system in super wide temperature range is provided with the aluminium board at monomer electricity core downside, is provided with the busbar interface of welding on monomer electricity core, busbar interface one side of welding is provided with anodal busbar, busbar interface of welding set up towards the module support.
According to the ultra-wide temperature range high-safety lithium ion power battery system, the aluminum plate is an aluminum snake-shaped plate, and the aluminum snake-shaped plate is distributed on the module support and is close to the position of the bus bar welding interface.
According to the lithium ion power battery system with the ultra-wide temperature range and the high safety, the aluminum snake-shaped plate is provided with the through hole, and the outer surface of the aluminum snake-shaped plate is covered with the heat conducting film.
According to the lithium ion power battery system with the ultra-wide temperature range and the high safety, the heat conduction film is any one of a heat conduction graphite film, a heat conduction silica gel sheet, a high heat conduction polyimide film and a graphene heat conduction film.
According to the ultra-wide temperature range high-safety lithium ion power battery system, the snake-shaped radian on the aluminum snake-shaped plate is attached to the outer diameter of the single battery cell.
According to the super-wide temperature range high-safety lithium ion power battery system, the upper grid liquid cooling plate and the lower grid liquid cooling plate are hollow aluminum plates, and snake-shaped return pipes are arranged inside the upper grid liquid cooling plate and the lower grid liquid cooling plate.
According to the ultra-wide temperature range high-safety lithium ion power battery system, the positive electrode bus bar is an L-shaped plane.
The invention has the beneficial effects that: the lithium ion power battery system provided by the invention adopts the upper layer grid liquid cooling plate and the lower layer grid liquid cooling plate, so that the heat of the battery module in the lithium ion battery system is effectively dissipated, the defect that the lithium ion power battery system dissipates heat through the soft package lithium battery in the prior art is effectively overcome, the upper layer grid liquid cooling plate and the lower layer grid liquid cooling plate are added in the lithium ion battery system, the heat of the battery module can be rapidly taken out, and the lithium ion power battery system is particularly suitable for working environments in different temperature ranges, so that the lithium ion power battery system is suitable for ultra-wide temperature ranges.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a battery module.
Fig. 3 is a schematic view of a grid liquid cooling plate.
In the figure: 1 is the battery box upper cover, 2 is upper grid liquid cooling board, 3 is lower floor's grid liquid cooling board, 4 is the battery box, 5 is the battery module, 6 is the module support, 7 is upper heat conduction silica gel pad, 8 is lower floor's heat conduction silica gel pad, 9 is the liquid outlet, 10 is the inlet, 11 is the battery management system, 12 is single electric core, 13 is the aluminium board, 14 is the tray weld mouth that converges, 15 is anodal busbar.
Detailed Description
The invention will be further explained with reference to the accompanying drawings.
As shown in figure 1, the lithium ion power battery system with ultra-wide temperature range and high safety comprises a battery box
The aluminum plate 13 is arranged on the lower side of the single battery cell 12, the bus bar welding interface 14 is arranged on the single battery cell 12, the positive bus bar 15 is arranged on one side of the bus bar welding interface 14, the bus bar welding interface 14 is arranged facing the module support 6, and the bus bar welding interface 14 can be used for fixing the bus bar tray interface 14 on the module support 6 through independent work of the single battery cell 12.
As shown in fig. 2, the aluminum plate 13 is an aluminum snake-shaped plate, the aluminum snake-shaped plate is distributed on the module support 6 at a position close to the bus bar welding interface 14, and the aluminum snake-shaped plate is attached to the single battery cell 12, and the aluminum snake-shaped plate supports the single battery cell 12, so that the connection of the single battery cell 12 is more stable.
The aluminum snake-shaped plate is provided with a through hole, the outer surface of the aluminum snake-shaped plate is covered with a heat-conducting film, and the battery module in the power battery system can meet the requirements of use conditions in different temperature areas by means of the heat-conducting film.
The heat conducting film adopts any one of a heat conducting graphite film, a heat conducting silica gel sheet, a high heat conducting polyimide film and a graphene heat conducting film, so that the efficiency of heat conduction of the heat conducting film is continuously improved, and the heat dissipation efficiency of the lithium ion power battery system can be integrally improved.
In order to increase the heat dissipation efficiency of the whole power battery system and meet the heat dissipation requirements of different temperature areas, the aluminum snake-shaped plate is adopted, the snake-shaped radian on the aluminum snake-shaped plate is fitted on the outer diameter of the single battery cell 12, the upper grid
As shown in fig. 3, the serpentine return pipe 16 is arranged inside the upper grid
The above description is for the purpose of further detailed description, and is not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art according to the technical solutions of the present invention without departing from the spirit of the present invention should be considered as the protection scope of the present invention.
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