CN206610884U - Lithium ion battery bag thermal runaway control system cisten mechanism - Google Patents
Lithium ion battery bag thermal runaway control system cisten mechanism Download PDFInfo
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- CN206610884U CN206610884U CN201720326771.9U CN201720326771U CN206610884U CN 206610884 U CN206610884 U CN 206610884U CN 201720326771 U CN201720326771 U CN 201720326771U CN 206610884 U CN206610884 U CN 206610884U
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- Prior art keywords
- water tank
- battery bag
- thermal runaway
- battery
- icing fluid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model provides a kind of lithium ion battery bag thermal runaway control system cisten mechanism, and its bottom is provided with the water inlet pipe and outlet pipe being respectively communicated with inside and outside water tank, and the water inlet pipe and outlet pipe are each located on there is space between the line ports inside water tank；It is additionally provided with inside water tank below guiding mechanism and the floating body that can be vertically moved up or down along guiding mechanism, floating body and is connected with a floating pipeline；Water tank upper is additionally provided with a breather pipe, and the port being located in water tank of the breather pipe is located in water tank on anti-icing fluid liquid level.The battery bag of thermal runaway is set to be filled in 10s by anti-icing fluid by controlling pump capacity and anti-icing fluid to flow to using the control system of this cisten mechanism, when having battery bag thermal runaway in certain several pieces, liquid cooling plate valve in thermal runaway battery bag is opened by control, the triple valve of other blocks can be communicated by control with water tank simultaneously, by controlling single bag thermal runaway or a few battery bag thermal runaway to be spread come intercept heat to other battery bags.
Description
Technical field
The utility model belongs to field of lithium ion battery, is lost more particularly, to a kind of new-energy automobile lithium ion battery bag heat
Control control system.
Background technology
While country promotes new-energy automobile fast-developing in recent years, the safety problem to electric automobile is increasingly weighed
Depending on, and safety problem is mainly or for the thermal runaway of lithium ion battery, so-called thermal runaway be exactly inside lithium ion cell due to
Various factors, quickly, and the rate of heat dispation of lithium ion battery is slower, causes substantial amounts of heat in lithium ion battery by rate of heat production
Accumulated inside, induces a series of side reaction.For example negative pole SEI films decompose (100-120 DEG C), and positive active material is decomposed,
Oxidisability very high free oxygen is discharged, occurs oxidation reaction with electrolyte, these side reactions can further result in lithium-ion electric
Heat accumulation inside pond, pressure increase ultimately results in lithium ion battery blast on fire, threatens the life and property peace of user
Entirely.
Thermal runaway problem currently for lithium ion battery mainly still uses preventive measure at home, even if we are pre-
Anti- is good again, also has small probability and occurs thermal runaway, meaning of the present invention is to make lithium ion battery thermal runaway be changed into hot controllable,
The thermal runaway of lithium ion battery was blocked in the thermal diffusion stage, just hindered before thermal runaway occurs for battery bag in other words
It is disconnected.
The content of the invention
In view of this, the utility model is directed to a kind of new-energy automobile lithium ion battery bag thermal runaway control system,
So that the thermal runaway of lithium ion battery was blocked in the thermal diffusion stage, heat is controlled in 10s, occur in battery bag
Just blocked before thermal runaway.The utility model lays special stress on protecting the cisten mechanism of system use：
Its bottom is provided with the water inlet pipe and outlet pipe being respectively communicated with inside and outside water tank, and the water inlet pipe and each self-alignment of outlet pipe
There is space between line ports inside the water tank；Guiding mechanism is additionally provided with inside water tank and can vertically be risen along guiding mechanism
A floating pipeline is connected with below the floating body of drop, floating body；Water tank upper is additionally provided with a breather pipe, and the breather pipe is located at
Port in water tank is located in water tank on anti-icing fluid liquid level；
At least two Battery pack packages, include several battery bags per Battery pack package；
Module and liquid cooling plate are provided with the inclusion of the battery bag, liquid cooling plate is located at the bottom of battery bag, module and battery
There is space between the inclusion inwall of bag, composition battery bag inner chamber is enclosed in the space；Module is placed on liquid cooling plate and and liquid cooling plate
The delivery port and water inlet of fluid passage in fixed contact, liquid cooling plate are stretched out outside battery bag inclusion, and the liquid cooling plate is provided with
One is controlled the liquid cooling plate drain valve for controlling fluid passage and battery bag inner chamber break-make by BMS；The inclusion top of battery bag is set
There is air bleeding valve.
Relative to prior art, using the new-energy automobile lithium ion battery bag heat of cisten mechanism described in the utility model
Control system out of control has the advantage that：
A, dual-alarm, the duplicate protection for forming insulation alarm and high temperature alarm；B, control side reaction, anti-icing fluid is to battery
Bag is internal to be filled, and is excluded oxygen, is reduced response intensity；C, absorb the heat that has produced of battery bag, anti-icing fluid have than
Larger specific heat capacity, unit volume can be with the more heat of absorptance；D, consumption dump energy, anti-icing fluid be it is conductive, can be with
Battery pack is discharged, released energy.
Brief description of the drawings
Constitute a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is the triple valve principle schematic of one of the system part；
Fig. 2 is battery pack structure principle schematic；
Fig. 3 is cisten mechanism schematic diagram；
Fig. 4 is configuration state schematic diagram when anti-icing fluid liquid level drops to minimum in water tank；
Fig. 5 is the configuration state schematic diagram under the system normal condition；
Fig. 6 is view when B1 battery bags occur exemplified by thermal runaway in system.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The building block in the system is introduced first：
Triple valve, as shown in figure 1, controlling threeway by BMS (BATTERY MANAGEMENT SYSTEM battery management systems)
The path switching of valve, the water side connection battery bag anti-icing fluid import (battery bag end) of triple valve, another two water inlet end connects respectively
Connect and gate water pump end and water tank end (makes battery bag end be connected with water pump end, or after thermal runaway before BMS controls, thermal runaway
Battery bag end is set to be connected with water tank end), centre is by the cold pipeline transition of liquid.
Battery bag, as shown in the principle schematic diagram of Fig. 2 battery bag, is provided with module 41 in the inclusion of the battery bag
With liquid cooling plate 42, liquid cooling plate 42 is located at the bottom of battery bag, has space between module 41 and the inclusion inwall of battery bag, the sky
Gap encloses composition battery bag inner chamber 43；Module 31 is placed on liquid cooling plate 42 and fixed with liquid cooling plate 42 and contacted, the liquid in liquid cooling plate
The delivery port and water inlet of body passage stretch out the outer (not shown) of battery bag inclusion, and the liquid cooling plate is provided with one by BMS controls
After liquid cooling plate drain valve 44 for controlling fluid passage and battery bag inner chamber break-make, the valve opening or destruction, liquid cooling plate
Fluid passage will be communicated with battery bag inner chamber, make fluid passage of the anti-icing fluid in liquid cooling system through liquid cooling plate 42 and should
In drain valve injection battery bag inner chamber 43.The inclusion tip designs of battery bag have air bleeding valve 45, and the air bleeding valve 45 is responsible for connection electricity
Outside Chi Bao inner chambers 43 and battery bag, the air bleeding valve uses air bleeding valve that is unidirectional and being only vented not discharge opeing, so as in anti-icing fluid
When injecting battery bag inner chamber, the discharge of the gas in battery bag inner chamber.
Further, the liquid cooling plate drain valve 44 on liquid cooling plate can be using switch valve, hot melt valve, mechanical damage formula valve, sensing
One of forms such as valve, switch valve is opened by BMS application valve bodies, liquid cooling plate inner chamber is communicated with the external world；It is BMS controls to heat valve
Heating arrangements on valve body, are elevated the temperature, and valve diaphragm is heated and destroyed, makes liquid cooling plate fluid passage and battery bag inner chamber phase
It is logical；Mechanical damage formula valve is BMS control machinery structures, is contacted with valve film, acts power, and valve film is destroyed, and makes liquid cooling plate liquid
Body passage is communicated with battery bag inner chamber；Inductance valve is the keying that valve body sensing ambient temperature carrys out control valve, leads to liquid cooling plate liquid
Road is communicated with battery bag inner chamber.
Water tank 1, as shown in Fig. 3 cisten mechanism schematic diagram, the bottom of water tank 1 is provided with the water inlet pipe being respectively communicated with inside and outside water tank
Y and outlet pipe X, and the water inlet pipe Y and outlet pipe X are each located on there is sky between the line ports inside water tank (Y1, X1)
Gap；Guiding mechanism 11 and the floating body 12 that can be vertically moved up or down along guiding mechanism are additionally provided with inside water tank, the lower section of floating body 12 is solid
It is connected to a floating pipeline 13；Water tank upper is additionally provided with a breather pipe Z, and the port being located in water tank of the breather pipe is located at water tank
On interior anti-icing fluid liquid level；
When floating body 12 drops to lowest part, as shown in figure 4, the floating pipeline 13 accommodate into the water inlet pipe Y and
Outlet pipe X is each located on the space between the line ports inside water tank (Y1, X1), and the two-port difference of the floating pipeline
The line ports (Y1, X1) inside water tank are each located on water inlet pipe and Y outlet pipes X to be docked and connected.
As shown in figure 5, introducing the structure group of energy automobile lithium ion battery bag thermal runaway control system of the present utility model
Into：
Including at least two Battery pack packages, include per Battery pack package before several battery bags, the battery pack structure
It has been introduced that, per one triple valve by BMS control gatings of Battery pack package Corresponding matching, the liquid of each battery bag in battery package
The battery bag connection end of triple valve belonging to the water inlet parallel connection access of fluid passage in cold drawing, the another two ends of triple valve are water pump
Connection end connects end with water tank and connects respectively and controlled that the water side of water pump 2 and the breather pipe Z of water tank can be gated respectively by BMS；
The outlet pipe X of the water tank 1 and the water inlet end UNICOM of water pump 2；
The water inlet of the delivery port parallel connection access water tank 1 of fluid passage in the liquid cooling plate of each battery bag in each battery package
Pipe Y.
As shown in figure 5, this example is by taking A groups and the Battery pack package of B groups two as an example, every group is respectively made up of 5 battery bags, such as schemes
Shown in A1~A5, B1~B5；A groups correspondence battery package Corresponding matching one is controlled triple valve a, the B group of gating by BMS
Correspondence battery package Corresponding matching one is controlled the triple valve b of gating by BMS；
Battery bag is when in normal condition, as shown in figure 3, there being anti-icing fluid in water tank, anti-icing fluid floats floating body
Come, the floating pipeline of floating body do not block the anti-icing fluid inside water inlet pipe and water outlet pipe port and water tank inside water tank suction,
Row, the state of triple valve is that battery bag connection end is connected with water pump connection end, the anti-icing fluid circulation road in whole control system
Line is：Water tank-water pump-battery bag liquid cooling plate (all battery bags)-water tank；As shown in figure 5, the breather pipe Z and triple valve of water tank 1
A and triple valve b pipeline are adopted to be represented by dashed lines and are not gated on.
If BMS monitors that thermal runaway occurs for some battery bag or certain several battery bag monomer temperature >=90 DEG C,
Understand for the present invention is illustrated, by taking a battery bag as an example, B1 battery bags as shown in Figure 6, while high temperature alarm is carried out,
Liquid cooling plate drain valve 44 in B1 battery bags is controlled to open by BMS, makes the fluid passage and B of the liquid cooling plate in B1 battery bags1Electricity
Chi Bao inner chambers are communicated, and make the reduction of B1 fluid passages pressure, and provide entrance for battery bag fluid injection, and anti-icing fluid is through fluid passage
In the injection battery bag of liquid cooling plate drain valve 44 inner chamber；
The a triple valves belonging to A Battery packs package (normal battery package) are switched to the breather pipe Z phases with water tank 1 simultaneously
It is logical, its path with water pump water outlet end is closed, reduces shunt volume, the B1 bag fluid injection efficiency to B Battery pack packages is improved, it is ensured that
Thermal runaway battery bag B1 inner chambers can quickly be filled by anti-icing fluid, to be cooled to the module in it.Normal battery bag
Closed loop pipeline path is changed into：Water tank (blast pipe Z)-battery bag liquid cooling plate-water tank (water inlet pipe Y), due to water tank and triple valve a companies
Logical line ports (i.e. blast pipe Z) are located at water tank upper, and the line ports are located in water tank on anti-icing fluid liquid level, quite
In the line ports and air communication in water tank；
Triple valve b belonging to B Battery pack packages still maintains the state that battery bag end is connected with water pump end, as shown in fig. 6, anti-
Freeze liquid and inject B groups under the drive of water pump, and due to B groups B1 battery bag liquid cooling plates fluid passage and battery bag inner chamber phase
It is logical, pressure reduction, flow resistance reduces, so the anti-icing fluid in liquid cooling system can be injected into B1 battery bags, if B1 battery bag quilts
Anti-icing fluid is full of, and also has anti-icing fluid remaining in water tank, then with the increase of B1 battery bags pressure, and the anti-icing fluid in system will be in B
Circulated in block along water tank-water pump-B2, B3...；
If B1 battery bags are not full of by anti-icing fluid, as shown in figure 4, the floating body 12 in water tank can decline with liquid level
Moved down along guiding mechanism 11 so that floating pipeline 13 falls in the middle of the water inlet pipe X and outlet pipe Y of water tank, and inlet tube and outlet tube is connect
Logical, the anti-icing fluid circulation in system is changed into A blocks-water tank (water inlet pipe-floating pipeline 13- outlet pipes)-water pump-B1, liquid is cold
Anti-icing fluid is all collected to be injected into B1 battery bags in system, and B1 battery bags are filled.
Anti-icing fluid injection thermal runaway battery is surrounded by several significant effects：A, progress insulation alarm, with high temperature alarm shape
Into dual-alarm, duplicate protection；B, control side reaction, anti-icing fluid are filled to battery bag inside, exclude oxygen, reduction reaction
Intensity；C, absorb the heat that has produced of battery bag, anti-icing fluid has than larger specific heat capacity, unit volume can with absorptance compared with
Many heats；D, consumption dump energy, anti-icing fluid is conductive, battery pack can be discharged, released energy.
The battery bag of thermal runaway is set to be filled in 10s by anti-icing fluid by controlling pump capacity.
Multiple battery bag thermal runaway control strategies ibid, when having battery bag thermal runaway in certain several pieces, thermal runaway battery
Liquid cooling plate valve in bag is opened by control, while the triple valve of other blocks can be communicated by control with water tank.
By controlling single bag thermal runaway or a few battery bag thermal runaway to be spread come intercept heat to other battery bags.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (1)
1. lithium ion battery bag thermal runaway control system cisten mechanism, it is characterised in that
Water tank bottom is provided with the water inlet pipe (Y) and outlet pipe (X) being respectively communicated with inside and outside water tank, and the water inlet pipe (Y) and water outlet
Pipe (X) is each located on there is space between the line ports inside water tank (Y1, X1)；
Below the floating body (12) that guiding mechanism is additionally provided with inside water tank and can be vertically moved up or down along guiding mechanism, floating body (12)
It is connected with a floating pipeline (13)；
Water tank upper is additionally provided with a breather pipe (Z), and the port being located in water tank of the breather pipe is located at anti-icing fluid liquid in water tank
On face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720326771.9U CN206610884U (en) | 2017-03-30 | 2017-03-30 | Lithium ion battery bag thermal runaway control system cisten mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720326771.9U CN206610884U (en) | 2017-03-30 | 2017-03-30 | Lithium ion battery bag thermal runaway control system cisten mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206610884U true CN206610884U (en) | 2017-11-03 |
Family
ID=60173231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720326771.9U Active CN206610884U (en) | 2017-03-30 | 2017-03-30 | Lithium ion battery bag thermal runaway control system cisten mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206610884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454748A (en) * | 2021-09-10 | 2022-05-10 | 青岛特来电新能源科技有限公司 | Energy storage battery fire-fighting emergency device, control method thereof and charging station |
-
2017
- 2017-03-30 CN CN201720326771.9U patent/CN206610884U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454748A (en) * | 2021-09-10 | 2022-05-10 | 青岛特来电新能源科技有限公司 | Energy storage battery fire-fighting emergency device, control method thereof and charging station |
| CN114454748B (en) * | 2021-09-10 | 2024-05-07 | 青岛特来电新能源科技有限公司 | Energy storage battery fire emergency device, control method thereof and charging station |
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