CN205944213U - A passive release mechanism for electric automobile lithium cell - Google Patents
A passive release mechanism for electric automobile lithium cell Download PDFInfo
- Publication number
- CN205944213U CN205944213U CN201620308005.5U CN201620308005U CN205944213U CN 205944213 U CN205944213 U CN 205944213U CN 201620308005 U CN201620308005 U CN 201620308005U CN 205944213 U CN205944213 U CN 205944213U
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- China
- Prior art keywords
- battery
- utility
- electric automobile
- model
- cell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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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- Connection Of Batteries Or Terminals (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model provides a passive release mechanism for electric automobile lithium cell, the fuse that prevents the thermal runaway of establishing ties between two cell makes up in order to constitute a battery monomer, the rated voltage of battery monomer combination with cell's rated voltage equals, wherein, every cell comprises a N A series of cells or constitutes or comprise by two group batteries are parallelly connected a N A series of cells one -tenth group battery again by a N battery is parallelly connected. The utility model discloses use BMS in power battery's production, the time of running, whether the copper bar between real -time supervision battery monomer is not hard up to eliminate the power battery trouble problem that leads to because the copper bar is not hard up.
Description
Technical field
This utility model is related to a kind of release mechanism, and specifically, it is a kind of passive for electric automobile lithium battery to be related to
Release mechanism.
Background technology
In the larger battery of existing monomer, during battery design, do not account for how preventing thermal runaway, answer actual
With during, the thermal runaway that the internal accidental short circuit of electric automobile battery box causes is the maximum potential safety hazard of electric automobile.
Connect as shown in figure 1, being entirely that wire connects between each batteries inside electric automobile battery box, batteries
Send short circuit with extraneous, other batteries can occur chain reaction, cause thermal runaway, cause electric automobile safety.
Utility model content
In place of solving above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide one kind to be used for cell tube
The method that between the detection battery of reason system, copper bar loosens, to overcome defect of the prior art.
To achieve these goals, this utility model provides a kind of passive security machine for electric automobile lithium battery
Structure, series connection one between two battery units prevents the electric fuse of thermal runaway to constitute a battery cell combination, described battery
The rated voltage of combination of monomers is equal with the rated voltage of described battery unit；Wherein, each battery unit is connected by N number of battery
Form or be made up of N number of cell parallel or set of cells is connected into by N number of battery and composed in parallel by two set of cells again.
As further illustrating to the passive security mechanism for electric automobile lithium battery described in the utility model, preferably
Ground, N is 20～156.
As further illustrating to the passive security mechanism for electric automobile lithium battery described in the utility model, preferably
Ground, the internal resistance of described electric fuse is 0.1 milliohm, and it is 250A that maximum bears electric current.
As further illustrating to the passive security mechanism for electric automobile lithium battery described in the utility model, preferably
Ground, when the voltage of described battery unit is 0V, described blown fuse.
As can be seen here, this utility model increases an electric fuse preventing thermal runaway between each battery series unit,
When any one monomer is out of control, electric fuse can fuse rapidly, it is to avoid the heat in battery case continues climing to other batteries
Prolong, prevent the danger that vehicle burns out further；Independent and battery core itself produces, assembling, when unexpected generation, blown fuse
Afterwards, the maintenance of batteries of electric automobile can be facilitated with less cost reparation in order to avoid changing battery core on a large scale；Manufacturing cost
Relatively low, tesla's battery has more than 7000 cell, and each battery is required for an electric fuse to ensure battery thermal runaway, and
Less than 100, cost is significantly less than the battery electric fuse of tesla's employing to the electric fuse number that this utility model adopts.
Brief description
Fig. 1 is the electric automobile battery box internal connection circuit figure of prior art；
Fig. 2 be the battery unit that electric automobile battery box of the present utility model is made up of 20 cell parallels inside even
Connect circuit diagram；
Fig. 3 is that the inside of the battery unit that electric automobile battery box of the present utility model is composed in series by 20 batteries connects
Circuit diagram；
Fig. 4 is connected into set of cells again by two set of cells simultaneously for electric automobile battery box of the present utility model by 20 batteries
The internal connection circuit figure that joint group becomes.
Description of reference numerals is as follows：
Battery series unit D, battery cell D1, electric fuse F.
Specific embodiment
In order that auditor can further appreciate that structure of the present utility model, feature and other purposes, in conjunction with appended
Preferred embodiment be accompanied by accompanying drawing describe in detail as follows, this accompanying drawing embodiment described is merely to illustrate technology of the present utility model
Scheme, and non-limiting this utility model.
First, refer to Fig. 2, Fig. 2 is the electricity that electric automobile battery box of the present utility model is made up of 20 cell parallels
Pool unit internal connection circuit figure.As shown in Fig. 2 the passive security machine for electric automobile lithium battery of the present utility model
Structure is that series connection one prevents the electric fuse F of thermal runaway to constitute a battery cell combination, each electricity between two battery unit D
The battery unit that pool unit D is made up of 20 cell parallels, now, rated voltage and described battery that described battery cell combines
The rated voltage of cells D is equal.The internal resistance of electric fuse F is 0.1 milliohm, and it is 250A that maximum bears electric current.Electricity as battery unit D
When pressing as 0V, electric fuse F fuses.
Referring again to Fig. 3, Fig. 3 is the battery unit that electric automobile battery box of the present utility model is composed in series by 20 batteries
Internal connection circuit figure.As shown in figure 3, the passive security mechanism for electric automobile lithium battery of the present utility model is two
Between individual battery unit D, series connection one prevents the electric fuse F of thermal runaway to constitute a battery cell combination, each battery unit D
The battery unit being composed in series by 20 batteries, now, the rated voltage of described battery cell combination is with described battery unit D's
Rated voltage is equal.The internal resistance of electric fuse F is 0.1 milliohm, and it is 250A that maximum bears electric current.When the voltage of battery unit D is 0V
When, electric fuse F fuses.
Turn finally to Fig. 4, Fig. 4 be electric automobile battery box of the present utility model by 20 batteries be connected into set of cells again by
The internal connection circuit figure that two set of cells compose in parallel.As shown in figure 4, of the present utility model for electric automobile lithium battery
Passive security mechanism is that series connection one prevents the electric fuse F of thermal runaway to constitute a battery cell between two battery unit D '
Combination, each battery unit D ' is connected into, by 20 batteries, the battery unit that set of cells is composed in parallel again by two set of cells, this
When, the rated voltage of described battery cell combination is equal with the rated voltage of described battery unit D '.The internal resistance of electric fuse F is
0.1 milliohm, it is 250A that maximum bears electric current.When the voltage of battery unit D ' is 0V, electric fuse F fuses.
As can be seen here, this utility model increases an electric fuse preventing thermal runaway between each battery series unit,
When any one monomer is out of control, electric fuse can fuse rapidly, it is to avoid the heat in battery case continues climing to other batteries
Prolong, prevent the danger that vehicle burns out further；Independent and battery core itself produces, assembling, when unexpected generation, blown fuse
Afterwards, the maintenance of batteries of electric automobile can be facilitated with less cost reparation in order to avoid changing battery core on a large scale；Manufacturing cost
Relatively low, tesla's battery has more than 7000 cell, and each battery is required for an electric fuse to ensure battery thermal runaway, and
Less than 100, cost is significantly less than the battery electric fuse of tesla's employing to the electric fuse number that this utility model adopts.
It is to be understood that, above-mentioned utility model content and specific embodiment are intended to prove the provided skill of this utility model
The practical application of art scheme, should not be construed as the restriction to this utility model protection domain.Those skilled in the art are in this practicality
In new spirit and principle, when can various modifications may be made, equivalent or improvement.Protection domain of the present utility model is with appended power
Sharp claim is defined.
Claims (2)
1. a kind of passive security mechanism for electric automobile lithium battery is it is characterised in that go here and there between two battery units (D)
The electric fuse (F) that one, connection prevents thermal runaway to constitute a battery cell combination, the rated voltage of described battery cell combination with
The rated voltage of described battery unit (D) is equal；Wherein, each battery unit (D) is composed in series by N number of battery or by N number of electricity
Pond composes in parallel or is connected into set of cells by N number of battery and composed in parallel by two set of cells；The internal resistance of described electric fuse (F)
For 0.1 milliohm, it is 250A that maximum bears electric current；When the voltage of described battery unit (D) is 0V, described electric fuse (F) fusing.
2. passive security mechanism according to claim 1 is it is characterised in that N is 20～156.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308005.5U CN205944213U (en) | 2016-04-13 | 2016-04-13 | A passive release mechanism for electric automobile lithium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308005.5U CN205944213U (en) | 2016-04-13 | 2016-04-13 | A passive release mechanism for electric automobile lithium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205944213U true CN205944213U (en) | 2017-02-08 |
Family
ID=57933797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620308005.5U Expired - Fee Related CN205944213U (en) | 2016-04-13 | 2016-04-13 | A passive release mechanism for electric automobile lithium cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205944213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293686A (en) * | 2016-04-13 | 2017-10-24 | 北京连创驱动技术有限公司 | A kind of passive security mechanism for electric automobile lithium battery |
-
2016
- 2016-04-13 CN CN201620308005.5U patent/CN205944213U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293686A (en) * | 2016-04-13 | 2017-10-24 | 北京连创驱动技术有限公司 | A kind of passive security mechanism for electric automobile lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20180413 |