CN217239675U - Battery pack and power device with same - Google Patents
Battery pack and power device with same Download PDFInfo
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- CN217239675U CN217239675U CN202220420980.0U CN202220420980U CN217239675U CN 217239675 U CN217239675 U CN 217239675U CN 202220420980 U CN202220420980 U CN 202220420980U CN 217239675 U CN217239675 U CN 217239675U
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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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Abstract
The utility model discloses a battery package and power device who has it, the battery package includes: the liquid cooling plate is arranged above the plurality of electric cores and is attached to the plurality of electric cores, the liquid cooling plate is provided with a liquid outlet area which is opposite to the first explosion-proof valve, and the liquid outlet area is suitable for tearing after high-temperature and high-pressure gas is sprayed out from the first explosion-proof valve so that cooling liquid in the cooling plate can flow out. The liquid cooling plate with the liquid outlet area is arranged on the battery cell, so that the working temperature of the battery cell can be reduced, active fire extinguishing can be realized when the battery cell is out of control due to heat and high-temperature and high-pressure gas is sprayed out of the first explosion-proof valve on the battery cell, and the safety of the battery pack is high; the battery pack can reduce the use of heat insulating materials, reduce the overall weight of the battery pack and save the manufacturing cost of the battery pack.
Description
Technical Field
The utility model belongs to the technical field of new energy automobile and specifically relates to a battery package and power device who has it is related to.
Background
In recent years, with the increase of the volume of a new energy market, thermal runaway frequently occurs in a power battery at a market end, property safety and personal safety of people are seriously harmed, the escape time required by the new national standard for the thermal runaway is more than 5 minutes, in order to achieve the aim, a large amount of heat insulation materials need to be added in a battery pack, and meanwhile, an upper cover of the battery pack also needs to have enough strength so as to achieve safety protection after the thermal runaway of the battery pack.
However, the current heat insulation measures adopting a large amount of heat insulation materials can increase the load of a battery system and increase the manufacturing cost, and only has a passive heat insulation function and no active fire extinguishing capability.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a battery pack, which has a light weight and saves the manufacturing cost of the battery pack, and the battery pack not only has a heat insulation function, but also can actively extinguish a fire, and has a high safety.
Another object of the present invention is to provide a power plant.
According to the utility model discloses battery package, include: the battery comprises a plurality of battery cores, wherein each battery core is provided with a first explosion-proof valve; the liquid cooling plate is arranged above the plurality of battery cells and attached to the plurality of battery cells, a liquid outlet area opposite to the first explosion-proof valve is arranged on the liquid cooling plate, and the liquid outlet area is torn after high-temperature and high-pressure gas is sprayed out of the first explosion-proof valve so that cooling liquid in the cooling plate can flow out.
According to the battery pack provided by the embodiment of the utility model, the liquid cooling plate with the liquid outlet area is arranged on the battery core, so that the working temperature of the battery core can be reduced, active fire extinguishing can be realized when the battery core is out of thermal control and the first explosion-proof valve on the battery core sprays high-temperature high-pressure gas, and the safety of the battery pack is higher; the battery pack can reduce the use of heat insulating materials, reduce the overall weight of the battery pack and save the manufacturing cost of the battery pack.
In some embodiments, the exit area is configured as a strength weakness that breaks under the impact of high temperature and/or high pressure gas.
In some embodiments, the plurality of battery cells are configured as a battery pack, the battery pack is provided with a plurality of battery pack, and the plurality of battery pack corresponds to the plurality of liquid outlet areas one by one.
Optionally, the liquid cooling plate is provided with an opening, and the strength weak part is configured as an explosion-proof film covering the opening.
Specifically, the opening is configured as a circular hole, and the explosion-proof film is configured as an aluminum film.
Optionally, the strength weakness is configured as a second burst valve.
In some embodiments, the battery pack further comprises: the control center is suitable for sending a signal for tearing the liquid outlet area to the driving piece when the temperature of the first explosion-proof valve is higher than a preset value.
Specifically, each first explosion-proof valve is provided with a temperature sensor, and each temperature sensor is in communication connection with the control center.
In some embodiments, the cell groups are four, four of the cell groups are arranged in an array, and the liquid cooling plate is pressed on the four cell groups.
According to the utility model discloses power device, include above-mentioned arbitrary battery package.
According to the utility model discloses power device through setting up above-mentioned battery package, can realize power device's lightweight to can promote power device's work security.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the electric core assembly according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a liquid cooling plate according to an embodiment of the present invention.
Reference numerals:
a battery pack 100,
An electric core 1, an electric core group 10, a first explosion-proof valve 11,
A liquid cooling plate 2, a liquid outlet area 21,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more.
A battery pack 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
According to the utility model discloses battery package 100, include: electric core 1 and liquid cooling board 2, electric core 1 be a plurality of and all be provided with first explosion-proof valve 11 on every electric core 1, liquid cooling board 2 sets up in 1 tops of a plurality of electric cores and the laminating of a plurality of electric cores 1, is provided with the play liquid district 21 just right with first explosion-proof valve 11 on the liquid cooling board 2, and play liquid district 21 tears so that the coolant liquid in the cooling board flows out after high temperature high-pressure gas is from 11 blowout of first explosion-proof valve.
Be provided with a plurality of electric cores 1 in the battery package 100, all be provided with first explosion-proof valve 11 on every electric core 1, when the opening pressure of 1 inside atmospheric pressure of electric core surpassed first explosion-proof valve 11, first explosion-proof valve 11 was opened, and the high temperature high-pressure gas of 1 inside of release electric core to prevent that electric core 1 from taking place the thermal runaway and causing the explosion, go out high temperature high-pressure gas release through first explosion-proof valve 11, can reduce the harm of 1 thermal runaway of electric core.
Be provided with liquid cooling board 2 in a plurality of electric core 1 tops, it flows to have the coolant liquid circulation in the liquid cooling board 2, and liquid cooling board 2 can reduce electric core 1's operating temperature with 1 inseparable laminating of electric core, promotes electric core 1's work security, through setting up liquid cooling board 2 in a plurality of electric core 1 tops, can reduce battery package 100's heat and stretch to application of mesophilic material in the reducible upper cover, thereby reduce manufacturing cost. The liquid cooling plate 2 is tightly attached to and presses the battery core 1, the overall strength of the battery pack 100 can be improved, and the structural reliability and the mechanical life of the battery pack 100 are greatly improved.
Besides, the liquid cooling plate 2 is further provided with a liquid outlet area 21 opposite to the first explosion-proof valve 11, after the high-temperature and high-pressure gas is sprayed out of the first explosion-proof valve 11, the liquid outlet area 21 is torn to enable the cooling liquid in the liquid cooling plate 2 to flow out, and the liquid cooling plate 2 is arranged above the battery cell 1, the cooling liquid can naturally flow to the battery cell 1 below under the action of gravity after flowing out of the torn liquid outlet area 21, the liquid outlet area 21 is opposite to the first explosion-proof valve 11, the cooling liquid can accurately flow to the battery cell 1 spraying the high-temperature and high-pressure gas, namely the cooling liquid can directionally flow to the battery cell 1 with thermal runaway, the cooling liquid can isolate the battery cell 1 with thermal runaway from air, and active fire extinguishing is achieved. The liquid cooling plate 2 can reduce the working temperature of the battery cell 1, and can actively isolate the battery cell 1 from air when the battery cell 1 is out of thermal runaway, so that active fire extinguishing is realized, and the functionality of the liquid cooling plate 2 is high.
And have the liquid cooling board 2 of going out liquid district 21 through the setting, can initiatively put out a fire when electric core 1 thermal runaway, the security of battery package 100 promotes to can further reduce the practicality of mesophragma material in battery package 100 upper cover, the utility model discloses a battery package 100 upper cover can adopt less thermal insulation material, and the weight of battery package 100 upper cover reduces, and battery package 100's whole weight just also reduces, thereby can practice thrift battery package 100 manufacturing cost.
According to the battery pack 100 provided by the embodiment of the utility model, the liquid cooling plate 2 with the liquid outlet area 21 is arranged on the battery core 1, so that the working temperature of the battery core 1 can be reduced, active fire extinguishing can be realized when the battery core 1 is out of thermal control and the first explosion-proof valve 11 on the battery core 1 sprays high-temperature high-pressure gas, and the safety of the battery pack 100 is high; the battery pack 100 can reduce the use of heat insulating materials, reduce the overall weight of the battery pack 100, and save the manufacturing cost of the battery pack 100.
In some embodiments of the present invention, each first explosion-proof valve 11 is correspondingly disposed in the middle of the battery cell 1.
The utility model discloses an in some embodiments, the coolant liquid is except having cooling characteristic, still has insulating, fire-retardant characteristic etc. and coolant liquid outflow waters on thermal runaway electricity core 1 surface, but rapid cooling thermal runaway electricity core 1, or puts out a fire to thermal runaway electricity core 1. Optionally, the cooling liquid is configured as a flame retardant.
In some embodiments of the present invention, the liquid outlet region 21 is configured as a strength weakness that breaks under the impact of high temperature and/or high pressure gas. The strength weak part can break under the impact of high-temperature gas, or break under the impact of high-pressure gas, and the strength weak part can also break under the impact of the mixed gas of high-temperature gas and high-pressure gas, and for convenience of description the utility model discloses and the simplified description, the gas that will have any one kind of nature of high temperature or high pressure now is collectively called high-temperature high-pressure gas, and is not limited the strength weak part and only breaks under the gas impact that has two kinds of characteristics of high temperature and high pressure concurrently, therefore can not understand high-temperature high-pressure gas as the restriction of the utility model.
Be provided with first explosion-proof valve 11 on electric core 1, electric core 1 dashes first explosion-proof valve 11 at the high temperature high-pressure gas that the thermal runaway time produced, discharge out from electric core 1 is inside, and the weak portion of intensity also is suitable for and breaks at the high-temperature high-pressure gas impact nature, open at first explosion-proof valve 11, release electric core 1 inside high temperature high-pressure gas after, high temperature high-pressure gas also the weak portion of natural impact strength, make the weak portion of intensity break, the coolant liquid flows from the weak portion of broken intensity, realize automatic fire extinguishing. Through constructing the liquid outlet part as the strength weak part, the liquid cooling plate 2 is sensitive to the thermal runaway of the battery core 1, the quick response can be realized, the safety of the battery pack 100 is improved, the strength weak part is broken under the impact of high-temperature and high-pressure gas, the structure of the liquid cooling plate 2 is simple, and the manufacturing cost is low.
The utility model discloses an in some embodiments, all be provided with first explosion-proof valve 11 on every electric core 1, be provided with a plurality of liquid outlet areas 21 on the liquid cooling board 2 to liquid outlet area 21 and first explosion-proof valve 11 one-to-one, after certain first explosion-proof valve 11 was opened, high temperature high-pressure gas blowout, liquid outlet area 21 that corresponds with this first explosion-proof valve 11 also tears, the coolant liquid flows out, liquid outlet area 21 and first explosion-proof valve 11 one-to-one realize accurate fixed point and put out a fire, the security of battery package 100 is high.
In some embodiments of the present invention, the battery cell 1 is configured as a blade battery cell 1.
In other embodiments of the present invention, the plurality of battery cells 1 are configured as a battery cell group 10, the battery pack 100 is provided with a plurality of battery cell groups 10 therein, and the plurality of battery cell groups 10 correspond to the plurality of liquid outlet areas 21 one to one.
A plurality of electric cores 1 construct to electric core group 10, all be provided with first explosion-proof valve 11 on each electric core 1 of electric core group 10, be provided with a plurality of liquid outlet areas 21 on the cold drawing, a plurality of liquid outlet areas 21 set up according to the mode of arranging of electric core group 10, first explosion-proof valve 11 on certain electric core group 10 opens the back, high temperature high-pressure gas blowout, the liquid outlet area 21 that corresponds with this electric core group 10 tears and makes the coolant liquid flow out, a plurality of liquid outlet areas 21 correspond with electric core group 10, liquid outlet area 21 can be put out a fire to the electric core group 10 correspondence of thermal runaway.
In some embodiments of the present invention, the liquid cooling plate 2 is provided with an opening, and the strength weak portion is configured as an explosion-proof film covering the opening.
Be provided with the trompil on the liquid cooling board 2, the runner of the coolant liquid in trompil and the liquid cooling board 2 links to each other, and the coolant liquid accessible trompil in the liquid cooling board 2 flows, and it has the rupture membrane to cover in trompil department, and the rupture membrane is comparatively weak in the intensity in other liquid cooling board 2 regions relatively. The explosion-proof film can play a role in sealing the cooling liquid in the liquid cooling plate 2, and when the explosion-proof film covers the opening of the liquid cooling plate 2, the cooling liquid normally flows in the liquid cooling plate 2 and cannot leak out of the opening; when electric core 1 takes place thermal runaway, high temperature high pressure gas spouts from first explosion-proof valve 11, and the rupture membrane breaks under high temperature high pressure gas's impact, makes the coolant liquid follow trompil department and flows, realizes initiatively putting out a fire.
In some embodiments of the present invention, the hole on the liquid cooling plate 2 is a circular hole, which is convenient for manufacturing, and the explosion-proof film is an aluminum film.
In other embodiments of the present invention, the strength weakness is configured as a second burst valve. Wherein the second explosion-proof valve is an explosion-proof valve which is generally understood by the technical personnel.
The high-temperature high-pressure gas that electric core 1 produced when thermal runaway dashes open first explosion-proof valve 11, discharges out from electric core 1 is inside, and high-temperature high-pressure gas also strikes the second explosion-proof valve naturally for the second explosion-proof valve breaks, and the coolant liquid flows from the second explosion-proof valve that breaks, realizes automatic fire extinguishing.
In some embodiments of the present invention, the battery pack 100 further comprises: the control center and the driving piece, the control center sends out the signal of tearing out liquid zone 21 to the driving piece when the temperature of first explosion-proof valve 11 is greater than the preset value.
The utility model discloses a in some embodiments, be provided with the driving piece in the play liquid district 21 department of liquid cooling plate 2, control center can control the driving piece when the temperature of first explosion-proof valve 11 is greater than the default and tear out liquid district 21, and the coolant liquid flows out from the weak portion of ruptured intensity, flows downwards and takes place electric core 1 that the thermal runaway.
The preset value can be selected, when the temperature of the first explosion-proof valve 11 is high, the control center directly sends a signal for tearing the liquid outlet area 21 to the driving piece, the liquid cooling plate 2 quickly responds, the cooling liquid flows out of the thermal runaway electric core 1, and the safety of the battery pack 100 is improved. Optionally, when the preset value is set to be the temperature at which the first explosion-proof valve 11 is about to rupture but not yet rupture, and when the temperature of the first explosion-proof valve 11 reaches the rupture critical point, the control center controls the driving member to tear the liquid zone 21, so that the cooling cold flow can be rapidly made to extinguish the fire to the electric core 1 out of thermal control, and the safety of the battery pack 100 is improved.
Further, each first explosion-proof valve 11 is provided with a temperature sensor, each temperature sensor is in communication connection with the control center, the control center detects the temperature of the first explosion-proof valve 11 through the temperature sensor, and when the temperature of the first explosion-proof valve 11 is detected to be larger than a preset value, a signal for tearing the liquid outlet area 21 is sent to the driving part.
In some embodiments of the present invention, the preset value is 120 ℃, and the control center sends a signal of tearing the liquid outlet area 21 to the driving member when the temperature sensor on the first explosion-proof valve 11 detects that the temperature of the first explosion-proof valve 11 is 120 ℃.
In other embodiments of the present invention, the control center sends the signal of tearing the liquid outlet area to the driving member when the pressure of the first explosion-proof valve 11 is greater than the predetermined pressure value, and the predetermined pressure value satisfies greater than or equal to 10KPa and less than or equal to 1 MPa.
In some embodiments of the present invention, the preset pressure value is 0.1MPa, and the control center sends the signal of tearing the liquid outlet area 21 to the driving member when the first explosion-proof valve 11 receives the pressure of 0.1 MPa.
The utility model discloses an in some concrete implementation, a plurality of electric cores 1 construct for four electric core groups 10, and four electric core groups 10's volume is close, and four electric core group 10 arrays are arranged, and liquid cooling board 2 is hugged closely and is pressed on four electric core groups 10, and liquid cooling board 2's cooling effect is good, still can improve battery package 100's bulk strength, has improved battery package 100's structural reliability and mechanical life greatly.
According to the utility model discloses power device, including any one above-mentioned battery package 100.
According to the utility model discloses power device through setting up above-mentioned battery package 100, can realize power device's lightweight to can initiatively put out a fire when battery package 100 thermal runaway, power device's security improves.
A specific embodiment of the battery pack 100 according to the present invention is described below with reference to fig. 1 to 3.
According to the utility model discloses battery package 100, include: electric core 1 and liquid cooling board 2, electric core 1 be a plurality of and all be provided with first explosion-proof valve 11 on every electric core 1, liquid cooling board 2 sets up in 1 tops of a plurality of electric cores and the laminating of a plurality of electric cores 1, is provided with the trompil just right with first explosion-proof valve 11 on the liquid cooling board 2, and it has the rupture membrane to cover in the trompil, and the rupture membrane is suitable for tearing after high temperature high-pressure gas is spout from first explosion-proof valve 11, and wherein, the rupture membrane structure is the aluminium membrane.
The liquid cooling plate 2 is internally provided with cooling liquid which circularly flows and has the characteristics of insulation, flame retardance and the like, when the electric core 1 normally works, the explosion-proof film is sealed at the opening, the cooling liquid cannot leak out from the opening, the electric core 1 is cooled by the cooling liquid, and the working temperature of the electric core 1 is reduced; when electric core 1 takes place thermal runaway, high temperature high pressure gas from the blowout of first explosion-proof valve 11, the rupture membrane breaks under high temperature high pressure gas's impact, and the coolant liquid flows out from the trompil promptly, and because liquid cold plate 2 sets up in the top of electric core 1, the coolant liquid flows to electric core 1 of below naturally under the effect of gravity, and the coolant liquid can be isolated with thermal runaway's electric core 1 and air, realizes initiatively putting out a fire.
Other configurations of the battery pack 100 according to the embodiment of the present invention, such as the battery cell 1 and the explosion-proof valve, and the like, and the operation thereof are known to those skilled in the art, and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery pack, comprising:
the battery comprises a plurality of battery cores, wherein each battery core is provided with a first explosion-proof valve;
the liquid cooling plate is arranged above the plurality of battery cores and attached to the plurality of battery cores, a liquid outlet area right opposite to the first explosion-proof valve is arranged on the liquid cooling plate, and the liquid outlet area is torn after the high-temperature and high-pressure gas is sprayed out of the first explosion-proof valve so that the cooling liquid in the liquid cooling plate flows out.
2. The battery pack according to claim 1, wherein the liquid discharge region is configured as a strength weak portion that is broken by the impact of high-temperature and/or high-pressure gas.
3. The battery pack of claim 1, wherein the plurality of electric cores are configured as a plurality of electric core groups, and a plurality of electric core groups are arranged in the battery pack and correspond to the liquid outlet areas one by one.
4. The battery pack according to claim 2, wherein the liquid-cooled plate is provided with an opening, and the strength weak portion is configured as an explosion-proof film covering the opening.
5. The battery pack according to claim 4, wherein the opening is configured as a circular hole, and the explosion-proof film is configured as an aluminum film.
6. The battery pack of claim 2, wherein the strength weakness is configured as a second explosion-proof valve.
7. The battery pack of claim 1, further comprising: the control center sends a signal for tearing the liquid outlet area to the driving piece when the temperature of the first explosion-proof valve is higher than a preset value.
8. The battery pack according to claim 7, wherein each of the first explosion-proof valves is provided with a temperature sensor, and each of the temperature sensors is in communication connection with the control center.
9. The battery pack of claim 3, wherein the cell groups are four, four of the cell groups are arranged in an array, and the liquid cooling plate is pressed on the four cell groups.
10. A power plant comprising a battery pack according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220420980.0U CN217239675U (en) | 2022-02-28 | 2022-02-28 | Battery pack and power device with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220420980.0U CN217239675U (en) | 2022-02-28 | 2022-02-28 | Battery pack and power device with same |
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| Publication Number | Publication Date |
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| CN217239675U true CN217239675U (en) | 2022-08-19 |
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| CN202220420980.0U Active CN217239675U (en) | 2022-02-28 | 2022-02-28 | Battery pack and power device with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115332656A (en) * | 2022-08-23 | 2022-11-11 | 华为数字能源技术有限公司 | Battery box, battery module, energy storage system and electric automobile |
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2022
- 2022-02-28 CN CN202220420980.0U patent/CN217239675U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115332656A (en) * | 2022-08-23 | 2022-11-11 | 华为数字能源技术有限公司 | Battery box, battery module, energy storage system and electric automobile |
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