CN110364644A - A kind of battery pack and new-energy automobile of the discharge of guidance thermal runaway gas - Google Patents
A kind of battery pack and new-energy automobile of the discharge of guidance thermal runaway gas Download PDFInfo
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- CN110364644A CN110364644A CN201910689798.8A CN201910689798A CN110364644A CN 110364644 A CN110364644 A CN 110364644A CN 201910689798 A CN201910689798 A CN 201910689798A CN 110364644 A CN110364644 A CN 110364644A
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- Prior art keywords
- gas
- battery
- thermal runaway
- runner
- shell
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
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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
Abstract
The object of the present invention is to provide the battery packs and new-energy automobile of a kind of guidance thermal runaway gas discharge, to realize the effect of the thermal runaway gas in time gushing out lithium battery during thermal runaway discharge.The battery pack of guidance thermal runaway gas discharge, comprising: lower box is provided with the gas flow being communicated with the atmosphere on the lower box；It is mounted on the intracorporal multiple battery modules of the nowel, each battery modules include shell and are mounted on the intracorporal multiple battery cells of the shell, it is respectively formed with the modular gas runner being connected to the gas flow on each shell and respectively corresponds the monomer gas runner of setting with each battery cell, each intracorporal multiple monomer gas runners of shell are connected to the modular gas runner；The thermal runaway gas that each battery cell gushes out during thermal runaway passes sequentially through its corresponding monomer gas runner, the modular gas runner and described gas flow and is expelled in atmosphere.
Description
Technical field
The present invention relates to field of lithium, the battery pack and new energy vapour of specifically a kind of guidance thermal runaway gas discharge
Vehicle.
Background technique
In recent years, the market share of electric car is promoted steadily.There is lithium ion battery high voltage, high-energy-density, length to follow
The excellent performances such as ring service life, no pollution to the environment by the highest attention of ev industry, and obtain certain application.So
And combustion mixture, such as H2, CO, CH4 can be generated during lithium ion battery thermal runaway, and accumulate in inside battery.In electricity
After reaching certain pressure boundary inside pond, safety valve is opened, and combustion mixture is discharged into external environment as battery erupts.
In battery ejection process, battery surface temperature can reach 1000 DEG C or so, and battery core internal temperature is higher, be usually associated with
Mars, martian surface temperature are about 600~1200 DEG C or so.Since battery high-temperature surface and Mars temperature are much higher than gaseous state
The ignition temperature of eruption Ignition Phenomena will easily occur, and cause fire once eruption is injected in air and contacts with oxygen
Calamity.Also it is easy to appear dieselings after high temperature combustible is contacted with the air for entering inside battery after battery eruption.In addition, i.e.
There is not Ignition Phenomena in gaseous state eruption after erupting battery, but if gradually running up to certain amount, will likely can also go out
Existing explosion phenomenon, harmfulness will be bigger.Therefore, battery eruption is to cause the peace of lithium-ion electric Pool fire even explosion accident
One of full hidden danger.The fire and explosion accident that lithium ion battery thermal runaway causes appear in the newspapers repeatly, and safety issue, which becomes, hinders it
In one of the principal element of electrical source of power industry large-scale commercial application.
Summary of the invention
The object of the present invention is to provide the battery packs and new-energy automobile of a kind of guidance thermal runaway gas discharge, with reality
The effect for the thermal runaway gas discharge for now in time gushing out lithium battery during thermal runaway.
The technical solution of the present invention is as follows:
The present invention provides a kind of battery packs of guidance thermal runaway gas discharge, comprising:
Lower box is provided with the gas flow being communicated with the atmosphere on the lower box；
The intracorporal multiple battery modules of the nowel are mounted on, each battery modules include shell and are mounted in the shell
Multiple battery cells, be respectively formed on each shell the modular gas runner being connected to the gas flow and with
Each battery cell respectively corresponds the monomer gas runner of setting, each intracorporal multiple monomer gas streams of shell
Road is connected to the modular gas runner；
The thermal runaway gas that each battery cell gushes out during thermal runaway passes sequentially through its corresponding monomer gas
Body runner, the modular gas runner and the gas flow are expelled in atmosphere.
Preferably, coolant flow channel is additionally provided on the lower box, the coolant flow channel is mutually independent with the gas flow
It opens, heat caused by the battery cell is passed to cold in the coolant flow channel by the shell and the nowel body heat
But liquid carries out hot absorption.
Preferably, the shell of each battery modules includes:
Multiple battery cells of lower case, each battery modules are each attached in the lower case；
Relative to the upper housing of lower case setting, the end face of the upper housing towards the lower case is offered for will be more
The groove that a battery cell wraps, each battery cell respectively form one between the slot bottom of the upper housing
Airtight chamber；
It is provided with along the longitudinal direction and multiple airtight chamber monomer gas correspondingly in the shell wall of the upper housing
Body runner has the mould group gas being connected to multiple monomer gas runners the shell wall of institute's upper housing is horizontally disposed
Body runner；
The thermal runaway gas that each battery cell gushes out during thermal runaway passes sequentially through its corresponding closed chamber
Room, the monomer gas runner flow into the modular gas runner.
Preferably, the lower case includes:
Heat-conducting piece, multiple battery cells are each attached on the heat-conducting piece；
The thermal resistance part being fixed on the heat-conducting piece is respectively arranged with the thermal resistance between the two neighboring battery cell
The airtight chamber is collectively formed by the slot bottom of the battery cell, the thermal resistance part and the groove in part.
Preferably, it is respectively arranged between a corresponding airtight chamber of each monomer gas runner
One the first check valve for making thermal runaway gas flow into the monomer gas runner from the airtight chamber, in each mould
Being respectively arranged with one between group gas flow and the gas flow flows into thermal runaway gas from the modular gas runner
To the second one-way valve of the gas flow.
Preferably, the limit limited to the battery cell is provided projectingly in the groove walls of the upper housing
Block.
According to another aspect of the present invention, the present invention also provides a kind of new-energy automobiles, lose including above-mentioned guidance heat
Control the battery pack of gas discharge.
The invention has the benefit that
Thermal failure gas caused by each battery cell is externally discharged in time, reduce or prevent to other battery cells or
The influence of battery modules.
Detailed description of the invention
Fig. 1 is the structure chart of battery pack of the invention；
Fig. 2 is the structure sectional view of lower box of the invention；
Fig. 3 is the structure chart of battery modules of the invention；
Fig. 4 is the structure chart of lower case of the invention；
Fig. 5 is the structure sectional view of battery modules of the invention；
Fig. 6 is the cross-sectional view of battery pack of the invention；
Fig. 7 is the cross-sectional view of battery pack of the invention；
Fig. 8 is the structure chart of lower box of the invention；
Description of symbols: 1, lower box；11, gas flow；111, it exports；121, entrance；2, battery modules；21, shell；
22, battery cell；211, modular gas runner；212, monomer gas runner；12, coolant flow channel；201, lower case；202, upper casing
Body；23, airtight chamber；2011, heat-conducting piece；2012, thermal resistance part；24, the first check valve；13, second one-way valve；2021, it limits
Block.
Specific embodiment
The exemplary embodiment that the present invention will be described in more detail below with reference to accompanying drawings.Although showing the present invention in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention without should be by embodiments set forth here
It is limited.It is to be able to thoroughly understand the present invention on the contrary, providing these embodiments, and can be by the scope of the present invention
It is fully disclosed to those skilled in the art.
First in the present embodiment, targeted battery can specifically refer to a variety of different rechargeable battery chemistry and configuration
Any one of, including but not limited to lithium ion (for example, LiFePO4, lithium and cobalt oxides, other lithium metal oxides etc.),
Lithium ion polymer, nickel metal hydride, ni-Cd, ni-mh, nickel zinc, silver-colored zinc or other battery types/constructions.The new energy vapour
Vehicle can be electric car, hybrid vehicle etc., and term " electric vehicle " used herein refers to all-electric vehicle,
Referred to as EV, plug-in hybrid vehicle, also referred to as PHEV or hybrid vehicle (HEV), utilizes multiple hybrid electric vehicles
Promote source, one of them is power drive system.It should be appreciated that the similar elements symbol used in multiple attached drawings indicates identical
Component or identical function component.In addition, the range that attached drawing is merely illustrative and not limiting of the present invention, and be not construed as
In proportion.
Rechargeable battery (for example, EV, PHEV, HEV) for electric vehicle stores big energy.The energy of each battery pack
The gross energy that amount and each battery modules are stored depends on the number of batteries in the type and battery modules 2 of battery pack.For example,
Lithium ion battery with 18650 form factors can store the thermal energy of about 30kJ when fully charged, therefore have 8000 electricity
The battery modules 2 in pond can store the thermal energy for being up to about 240MJ, this depends on the charged state of individual.When in this battery modules 2
Battery cell 22 undergo thermal runaway when, it discharges its thermal energy, and some of them are hot gas forms (for example, for lithium ion
18650 batteries, about 5 liters of hot gas).These hot gas jets are combined with the heat generated in this case, may be led
Adjacent battery cell 22 is caused to enter thermal runaway state.Therefore, more next if without effectively managing initial thermal runaway event
More battery cells 22 will enter thermal runaway, until all battery cells 2222 in final battery modules 2 may all be disappeared
Consumption.The purpose of the application is, externally discharges in time to thermal failure gas caused by each battery cell, reduces or prevent
Influence to other battery cells 22 or battery modules 2.
Referring to Figure 1 to Figure 7, the present invention provides a kind of battery packs of guidance thermal runaway gas discharge, comprising:
Lower box 1 is provided with the gas flow 11 being communicated with the atmosphere on the lower box 1；
The multiple battery modules 2 being mounted in the lower box 1, each battery modules 2 include shell 21 and are mounted on described
Multiple battery cells 22 in shell 21 are respectively formed with the mould group being connected to the gas flow 11 on each shell 21
Gas flow 211 and the monomer gas runner 212 that setting is respectively corresponded with each battery cell 22, each shell
Multiple monomer gas runners 212 in 21 are connected to the modular gas runner 211；
The thermal runaway gas that each battery cell 22 gushes out during thermal runaway passes sequentially through its corresponding monomer
Gas flow 212, the modular gas runner 211 and the gas flow 11 are expelled in atmosphere.
Wherein, as shown in figure 8, for the lower box 1, the gas flow 11 of lower box 1 along lower box 1 frame and
The arranged direction of battery modules 2 is configured, and lower box 1 is made to be formed as a frame structure, guarantees guidance thermal runaway gas function
While energy, the quality of lower box 1 is alleviated, the intensity of lower box 1 is improved.The gas flow being arranged on the lower box 1
11 be the hiding runner being arranged inside the lower box 1, which has the outer surface for being connected to lower box 1
Outlet 111, the thermal runaway gas for flowing into gas flow 11 are emitted into atmosphere by the outlet 111.
As shown in Fig. 2, coolant flow channel 12 is additionally provided on the lower box 1, the coolant flow channel 12 and the gas stream
11 phase of road is independently opened, and heat caused by the battery cell 22 passes to institute by the shell 21 and 1 heat of the lower box
The coolant liquid stated in coolant flow channel 12 carries out hot absorption.
Wherein, coolant flow channel 12 is distributed in the lower box 1 of battery pack at " S " type continuous bending.Coolant flow channel 12 has
Entrance 121, coolant liquid are entered in coolant flow channel 12 by entrance, and pass through outlet outflow.It is in conjunction with Fig. 2 as can be seen that cold
But runner 12 and gas flow 11 are independently arranged, and are not had an impact mutually.In order to enable coolant liquid can be by 22 institute of battery cell
The heat absorption of generation is fallen, it is desirable that and changing lower box 1 should be made of thermally conductive material, for example, thermal conductive metallic material, specially
Iron, the materials such as aluminium are made.Since lower box 1 is directly contacted with the heat-conducting plate 2011 of lower case 201, thus by thermal runaway High Temperature Gas
The heat of body is rapidly transferred to the coolant liquid in coolant flow channel 12, cools down to high-temperature gas.
Preferably, as shown in Fig. 3 to Fig. 7, the shell 21 of each battery modules 2 includes:
Multiple battery cells 22 of lower case 201, each battery modules 2 are each attached in the lower case 201；
Relative to the upper housing 202 of the lower case 201 setting, the end face of the upper housing 202 towards the lower case 201 is opened
Equipped with the groove for wrapping multiple battery cells 22, each battery cell 22 respectively with the upper housing
An airtight chamber 23 is formed between 202 slot bottom；
It is provided with along the longitudinal direction and the one-to-one list of multiple airtight chamber 23 in the shell wall of the upper housing 202
Body gas flow 212 has and multiple monomer gas runners 212 connect the shell wall of institute's upper housing 202 is horizontally disposed
The logical modular gas runner 211；
It is corresponding described closed that the thermal runaway gas that each battery cell 22 gushes out during thermal runaway passes sequentially through its
Chamber 23, the monomer gas runner 212 flow into the modular gas runner 211.
It can be seen that the modular gas runner 211 and monomer gas runner 212 and above-mentioned gas stream in conjunction with Fig. 5 and Fig. 6
Road 11 is similar, is hiding runner, and one is provided on the outer wall of upper housing 202 and is connected to the modular gas runner 211
Hole makes the thermal runaway gas in modular gas runner 211 can be with outlet.
Specifically, as shown in figure 4, the lower case 201 includes:
Heat-conducting piece 2011, multiple battery cells 22 are each attached on the heat-conducting piece 201；
The thermal resistance part 2012 being fixed on the heat-conducting piece 2011 is respectively arranged with one between the two neighboring battery cell 22
Institute is collectively formed by the slot bottom of the battery cell 22, the thermal resistance part 2012 and the groove in a thermal resistance part 2012
State airtight chamber 23.
Specifically, lower case 201 is made of several thermal resistance parts 2022 and a heat-conducting piece 2021,2022 He of thermal resistance part
The welded equal processing methods group of heat-conducting piece 2021 is integral.Heat resistance plate 2022 blocks the heat transfer between battery cell 22, avoids
Influence of the energy discharged when 22 thermal runaway of battery cell to other battery cells 22.In order to enable 22 thermal runaway of battery cell
When heat be not passed at other battery cells 22, it is desirable that the thermal resistance part 2012 should be formed between the slot bottom of groove sealing close
System, in this way, the slot bottom of battery cell 22, thermal resistance part 2012 and groove together forms the airtight chamber 23 of a sealing.
Wherein, heat-conducting piece 2011 uses the material of the low-density such as aluminium alloy, high thermal conductivity, high intensity, i.e. carrying battery list
The weight of body 1 and upper housing 202, and the heat of the generation of battery cell 22 is conducted in time to the lower box 1 of battery pack.
Specifically, in conjunction with Fig. 5 and Fig. 1, in a corresponding closed chamber of each monomer gas runner 212
One is respectively arranged between room 23 makes thermal runaway gas flow into the monomer gas runner 212 from the airtight chamber 23
First check valve 24, being respectively arranged with one between each modular gas runner 211 and the gas flow 11 makes heat
Gas out of control flows into the second one-way valve 13 of the gas flow 11 from the modular gas runner 211.
Wherein, it is provided with the hole being connected to the modular gas runner 211 on the outer wall of upper housing 202, is set in the hole
It is equipped with internal screw thread, is provided with external screw thread in second one-way valve 13, the mode being connected through a screw thread is by the second one-way valve 13
It is fixed between the upper housing 202；It is provided on the inner wall of upper housing 202 and is connected to the monomer gas runner 212 and closed chamber
The hole of room 23 is provided with internal screw thread in the hole, is provided with external screw thread on the first check valve 24, the mode being connected through a screw thread makes
First check valve 24 is fixed on upper housing 202.Simultaneously as the one-way guide flow of check valve acts on, make to flow into monomer gas
Air-flow in runner 212 and modular gas runner 211 will not backflow into airtight chamber 23, in this way, each battery cell 22 it
Between form the relationship completely cut off completely, influencing each other between each battery cell 22 can be prevented completely.
In addition, being provided projectingly in the groove walls of the upper housing 202 and having limited the battery cell 22 such as Fig. 5
The limited block 2021 of position.Width direction (the width direction and Fig. 1 of upper housing 202 of the limited block 2021 in the upper housing 202
In, the width direction of battery pack is identical) on be oppositely arranged two, battery cell 22 is limited between two limited blocks 2021,
In this way, the gas that side is erupted when 22 thermal runaway of battery cell can be enable in order to the installation and fixation of the battery cell 22
Discharge battery modules 1 in time.Limited block 2021 is processed into one by casting etc. with upper housing 202.
In addition, for each battery modules 2 of the application, by the thermal control gas erupted in each battery modules 2
Body has been flowed into gas flow 11 by modular gas runner 211, and the setting of second one-way valve 13 has then blocked gas stream
Thermal runaway gas backflow in road 11 is into other battery modules 2, accordingly it is also possible to reduce or block between battery modules 2
It influences.
When a certain 22 thermal runaway of battery cell erupts gas, corresponding first check valve 24 is opened, high-temperature gas via
Airtight chamber 23, monomer gas runner 212 flow into modular gas runner 211, and second one-way valve 13 is opened, under high-temperature gas flows into
The gas flow 11 of cabinet 1 avoids high-temperature gas to other battery cells finally by preset 111 outflow of outlet of lower box 1
22, the influence of battery modules 2 effectively prevents thermal runaway from diffusing to other battery cells 22, battery modules 2, simultaneously because to height
The orientation discharge of wet body, reduces influence of the high-temperature gas to electric vehicle cabin, improves safety.
Simultaneously as in the present embodiment, gas flow 11, coolant flow channel 12, monomer gas runner 212 and modular gas stream
Road 211 is designed on original product, for entire battery pack, not will increase its area.
Specifically, the application has the effect that
1, provided with the airtight chamber 23 between battery cells 22 different in battery modules 2, thermal runaway is controlled with second one-way valve 13
Flow direction of the gas of eruption in battery modules 2 reduces other batteries of battery cell 22 to same battery modules 2 of thermal runaway
The influence of monomer 22；
2, provided with the confined space between battery modules 2, the gas of thermal runaway eruption is controlled in lower box 1 with second one-way valve 24
Gas flow 11 in flow direction, avoid influence of the battery modules 2 of thermal runaway to other battery modules 2；
3, the heat-conducting plate 2011 of lower case 201 plays load-bearing effect to battery modules 2, and can be by the quantity of heat production of battery cell 22
It conducts with the heat of thermal runaway high-temperature gas to the coolant liquid in the coolant flow channel 12 of lower box 1, to battery cell 22 and high temperature
Gas plays the role of cooling, and while ensure that battery cell 22 has preferable temperature consistency, reduces
The harm of thermal runaway high-temperature gas.
4, the gas flow 11 of lower box 1 guides the flow path of thermal runaway eruption gas, passes through specified 111 row of outlet
Battery pack out reduces influence of the high-temperature gas to electric vehicle crew module.
According to another aspect of the present invention, the present invention also provides a kind of new-energy automobiles, lose including above-mentioned guidance heat
Control the battery pack of gas discharge.
Claims (7)
1. a kind of battery pack of guidance thermal runaway gas discharge characterized by comprising
Lower box (1) is provided with the gas flow (11) being communicated with the atmosphere on the lower box (1)；
The multiple battery modules (2) being mounted in the lower box (1), each battery modules (2) include shell (21) and peace
Multiple battery cells (22) in the shell (21) are respectively formed with and the gas stream on each shell (21)
The modular gas runner (211) of road (11) connection and the monomer gas that setting is respectively corresponded with each battery cell (22)
Runner (212), multiple monomer gas runners (212) in each shell (21) are connected to the modular gas runner
(211)；
The thermal runaway gas that each battery cell (22) is gushed out during thermal runaway passes sequentially through its corresponding list
Body gas flow (212), the modular gas runner (211) and the gas flow (11) are expelled in atmosphere.
2. battery pack according to claim 1, which is characterized in that be additionally provided with coolant flow channel on the lower box (1)
(12), the coolant flow channel (12) is opened with the gas flow (11) Xiang Duli, heat caused by the battery cell (22)
The coolant liquid in the coolant flow channel (12), which is passed to, by the shell (21) and the lower box (1) heat carries out hot absorption.
3. battery pack according to claim 1, which is characterized in that the shell (21) of each battery modules (2)
Include:
Multiple battery cells (22) of lower case (201), each battery modules (2) are each attached to the lower case (201)
On；
Relative to the upper housing (202) of the lower case (201) setting, the upper housing (202) is towards the lower case (201)
End face offer for the groove that wraps multiple battery cells (22), each battery cell (22) respectively with
An airtight chamber (23) is formed between the slot bottom of the upper housing (202)；
It is provided with along the longitudinal direction and multiple one-to-one institutes of airtight chamber (23) in the shell wall of the upper housing (202)
Monomer gas runner (212) are stated, are had and multiple monomer gas streams the shell wall of institute's upper housing (202) is horizontally disposed
The modular gas runner (211) of road (212) connection；
It is corresponding described close that the thermal runaway gas that each battery cell (22) is gushed out during thermal runaway passes sequentially through its
Closed chamber room (23), the monomer gas runner (212) flow into the modular gas runner (211).
4. battery pack according to claim 3, which is characterized in that the lower case (201) includes:
Heat-conducting piece (2011), multiple battery cells (22) are each attached on the heat-conducting piece (201)；
The thermal resistance part (2012) being fixed on the heat-conducting piece (2011) is set respectively between the two neighboring battery cell (22)
It is equipped with the thermal resistance part (2012), passes through the battery cell (22), the slot of thermal resistance part (2012) and the groove
The airtight chamber (23) are collectively formed in bottom.
5. battery pack according to claim 3, which is characterized in that right with it in each monomer gas runner (212)
One is respectively arranged between one answered the airtight chamber (23) flows into thermal runaway gas from the airtight chamber (23)
To the first check valve (24) of the monomer gas runner (212), in each modular gas runner (211) and the gas
One is respectively arranged between runner (11) makes thermal runaway gas flow into the gas stream from the modular gas runner (211)
The second one-way valve (13) in road (11).
6. battery pack according to claim 3, which is characterized in that protrusion is set in the groove walls of the upper housing (202)
It is equipped with the limited block (2021) limited to the battery cell (22).
7. a kind of new-energy automobile, which is characterized in that arranged including guidance thermal runaway gas as claimed in any one of claims 1 to 6
Battery pack out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910689798.8A CN110364644A (en) | 2019-07-29 | 2019-07-29 | A kind of battery pack and new-energy automobile of the discharge of guidance thermal runaway gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910689798.8A CN110364644A (en) | 2019-07-29 | 2019-07-29 | A kind of battery pack and new-energy automobile of the discharge of guidance thermal runaway gas |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467242A (en) * | 2020-11-09 | 2021-03-09 | 清华大学 | Battery protection component and battery pack |
| CN112490578A (en) * | 2020-11-11 | 2021-03-12 | 华南理工大学 | Power battery module |
| CN112701410A (en) * | 2020-12-29 | 2021-04-23 | 长城汽车股份有限公司 | Battery pack and vehicle with same |
| FR3104821A1 (en) * | 2019-12-13 | 2021-06-18 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Electric battery with limited risk of thermal runaway propagation |
| CN114361644A (en) * | 2021-12-28 | 2022-04-15 | 重庆长安新能源汽车科技有限公司 | New energy automobile battery package and new energy automobile |
| CN114424396A (en) * | 2020-04-29 | 2022-04-29 | 株式会社Lg新能源 | Battery pack and device including the same |
| CN114497874A (en) * | 2022-04-02 | 2022-05-13 | 长安新能源南京研究院有限公司 | Battery pack, automobile and control method for reducing thermal runaway risk of battery pack |
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Application publication date: 20191022 |