CN214378654U - Battery package thermal diffusion protective structure and battery package - Google Patents
Battery package thermal diffusion protective structure and battery package Download PDFInfo
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- CN214378654U CN214378654U CN202120720932.9U CN202120720932U CN214378654U CN 214378654 U CN214378654 U CN 214378654U CN 202120720932 U CN202120720932 U CN 202120720932U CN 214378654 U CN214378654 U CN 214378654U
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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 relates to a battery package thermal diffusion protective structure and battery package, battery package thermal diffusion protective structure include case lid, box and PLASTIC LAMINATED, are equipped with the explosion-proof valve of pressure release on box or/and the case lid, and the PLASTIC LAMINATED is arranged in the box and will separate into in the box and be used for placing the electricity core stack body or the electricity core and directly link the chamber that holds of group, the case lid with be formed with on the box respectively with the water conservancy diversion passageway of explosion-proof valve of pressure release intercommunication, the case lid with be equipped with respectively on the box and switch on or keep apart the water conservancy diversion passageway with hold the pressure release structure in chamber. The utility model discloses a module apron or electric core stack body apron have directly been saved, and usable box and case lid directly compress tightly electric core to set up pressure relief structure and water conservancy diversion passageway on box or case lid, utilize the interior cavity of case lid or box to carry out the heat water conservancy diversion, and utilize the explosion-proof valve of pressure release to carry out outside directional pressure release, have that overall structure is simple compact, with low costs, hold the advantage that the chamber utilization ratio is high, thermal runaway protecting effect is good.
Description
Technical Field
The utility model relates to a battery package thermal diffusion protection such relevant field, concretely relates to battery package thermal diffusion protective structure and battery package.
Background
At present, the protection of battery package heat diffusion is generally to increase protection casing or PLASTIC LAMINATED between the stack of electric core, makes to separate into between the stack of electric core and independently hold the chamber and directional pressure release, prevents that certain string of electric core from becoming invalid and diffusing to the adjacent electric core's a heat diffusion protection mode. The existing battery pack thermal diffusion protection mode has the problems of high cost, complex structure, low utilization rate of an accommodating cavity and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve one or several among the prior art problem, provide a battery package thermal diffusion protective structure and battery package.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a battery package thermal diffusion protective structure, includes case lid, box and PLASTIC LAMINATED, be equipped with the explosion-proof valve of pressure release on box or/and the case lid, the PLASTIC LAMINATED is arranged in the box and will separate into in the box and be used for placing electric core stack body or electric core and directly link the independent confined chamber that holds of group, the case lid with be formed with on the box respectively with the water conservancy diversion passageway of explosion-proof valve of pressure release intercommunication, the case lid with be equipped with respectively on the box and switch on or keep apart the water conservancy diversion passageway with hold the pressure release structure in chamber.
The battery cell stacking body is used for stacking a plurality of battery cells to form a stack of battery cells, and the battery cells are directly connected in series to form a group of battery cells by sequentially connecting the battery cell stacking bodies.
The utility model has the advantages that: the utility model discloses directly link directly to organize with electric core stack body or electric core and directly put into the chamber that holds of box, directly utilize the box, the case lid, the isobaric electric core such as PLASTIC LAMINATED board or electric core stack body apron has been saved, and set up pressure release structure and water conservancy diversion passageway on box or case lid, utilize the cavity to carry out the heat water conservancy diversion in case lid or the box, and utilize the explosion-proof valve of pressure release to carry out outside directional pressure release, the explosion-proof valve of overall structure is simple compact, and is with low costs, it is high to hold the chamber utilization ratio, the good advantage of thermal runaway protecting effect.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the PLASTIC LAMINATED is arranged in the box and will the box is separated into and is used for placing the electric core and directly link the chamber that holds of group, every be equipped with one row at least on the water conservancy diversion passageway the pressure relief structure, each the water conservancy diversion passageway respectively with each hold in the chamber electric core and directly link the utmost point ear junction of group or utmost point ear end place row and correspond and arrange, every pressure relief structure on the water conservancy diversion passageway corresponds with each utmost point ear junction or utmost point ear end and arranges respectively.
The beneficial effect of adopting the further scheme is that: the position of electric core thermal runaway generally takes place in utmost point ear junction or utmost point ear end, set up the water conservancy diversion passageway in each one side of utmost point ear junction or utmost point ear end, the water conservancy diversion passageway does not pass through electric core, and the utmost point ear junction or the pressure release structure on utmost point ear end and the water conservancy diversion passageway of directly organizing with electric core corresponds and arranges, in case the utmost point ear junction takes place the thermal runaway, the heat and the atmospheric pressure of its production at first can be obstructed by the PLASTIC LAMINATED, prevent that it from stretching to other electric cores, when heat and atmospheric pressure that the electric core that became invalid produced reach the certain degree, can open the pressure release structure, make the heat in time get into the water conservancy diversion passageway of case lid or box, after box and case lid heat dissipation, reach explosion-proof pressure release mouth and carry out directional pressure release, guarantee vehicle user safety.
Further, the PLASTIC LAMINATED is arranged in the box and will separate into the chamber that holds that is used for placing electric core stack body in the box, every be equipped with at least one row on the water conservancy diversion passageway the pressure relief structure, each the water conservancy diversion passageway corresponds with each holds the row of electric core stack body utmost point ear end place in the chamber respectively and arranges, every pressure relief structure on the water conservancy diversion passageway corresponds with each row utmost point ear end and arranges, and the adjacent utmost point ear end of two adjacent electric core stack bodies shares a water conservancy diversion passageway or respectively uses a water conservancy diversion passageway.
The beneficial effect of adopting the further scheme is that: the position of electric core thermal runaway generally takes place at utmost point ear end, set up the water conservancy diversion passageway in each one side of being listed as utmost point ear end, the water conservancy diversion passageway does not pass through electric core, and correspond the pressure release structure with on electric core stack utmost point ear end and the water conservancy diversion passageway and arrange, in case utmost point ear end takes place the thermal runaway, the heat and the atmospheric pressure of its production can be at first by the PLASTIC LAMINATED separation, prevent that it from stretching to other electric cores, when the heat and the atmospheric pressure that the electric core that became invalid produced reach the certain degree, can open the pressure release structure, make the heat in time get into the water conservancy diversion passageway of case lid or box, after box and case lid heat dissipation, reach explosion-proof pressure release mouth and carry out directional pressure release, guarantee vehicle user safety.
Further, the PLASTIC LAMINATED will the box is separated into upper and lower two-layer and is held the chamber, be located the upper strata hold the chamber with water conservancy diversion passageway on the case lid switches on or keeps apart through pressure relief structure, be located the lower floor hold the chamber with water conservancy diversion passageway on the box switches on or keeps apart through pressure relief structure.
The beneficial effect of adopting the further scheme is that: adopt two-layer about the upper and lower layer to hold the chamber and carry out the fireproof design, the one deck takes place the thermal runaway, can not influence the electric core on other layers, and heat and atmospheric pressure derive efficiently moreover.
Further, the PLASTIC LAMINATED will the multilayer holds the chamber about the box is separated into, be located the upper strata hold the chamber with water conservancy diversion passageway on the case lid switches on or keeps apart through pressure relief structure, be located the lower floor hold the chamber with water conservancy diversion passageway on the box switches on or keeps apart through pressure relief structure, be located the intermediate level hold the chamber through fire prevention passageway on the PLASTIC LAMINATED and on the fire prevention passageway pressure relief structure with water conservancy diversion passageway on box or the case lid switches on or keeps apart.
The beneficial effect of adopting the further scheme is that: the multilayer accommodating cavity can be designed for different requirements to place multilayer battery cores.
Furthermore, a first circumferential channel and/or a second circumferential channel are respectively arranged on the circumferential side of the box body and/or the box cover, a flow guide channel on the box body and/or the box cover is respectively communicated with the first circumferential channel and/or the second circumferential channel, and the first circumferential channel and/or the second circumferential channel is communicated with the pressure relief explosion-proof valve.
The beneficial effect of adopting the further scheme is that: the heat of each flow guide channel can be discharged out through the pressure relief explosion-proof valve by utilizing the circumferential channel.
Further, still include the liquid cooling board, the liquid cooling board with the PLASTIC LAMINATED is arranged in respectively in the box and will separate into in the box and be used for placing electric core stack body or electric core and directly link the chamber that holds of group.
The beneficial effect of adopting the further scheme is that: utilize liquid cooling plate structure and PLASTIC LAMINATED structure cooperation, make the liquid cooling plate play the effect of PLASTIC LAMINATED, saved the PLASTIC LAMINATED use, the cost is reduced, and the structure is compacter, has further increased and has held the chamber utilization ratio.
Further, the fire prevention plate includes a first partition plate, and the first partition plate and the liquid cooling plate are arranged in parallel and at an interval.
The beneficial effect of adopting the further scheme is that: the liquid cooling plate and the first partition plate are arranged in parallel, and the liquid cooling plate serves as a fireproof plate, so that the fireproof plate can be saved, the structure is compact, and the cost is reduced.
Further, the pressure relief structure comprises a pressure relief film or a one-way valve. The pressure relief film is a thermosensitive film which is sensitive to temperature and pressure, and the thermosensitive film can be opened within a certain temperature range.
The beneficial effect of adopting the further scheme is that: the pressure relief film or the one-way valve is adopted, so that the air flow only flows in one direction from the box body to the flow guide channel, and the air flow is prevented from flowing into other accommodating cavities from the flow guide channel through other pressure relief films or the one-way valve.
The utility model provides a battery pack, includes that electric core stack body or electric core directly link group and protective structure, electric core stack body or electric core directly link the group and install in the holding intracavity in the box.
The utility model has the advantages that: the utility model discloses a battery pack, directly link directly to organize with electric core stack or electric core and directly put into the chamber that holds of box, directly utilize the box, the case lid, the isobaric electric core such as PLASTIC LAMINATED, original module apron or electric core stack apron has been saved, and set up pressure release structure and water conservancy diversion passageway on box or case lid, utilize the cavity to carry out the heat water conservancy diversion in case lid or the box, and utilize the explosion-proof valve of pressure release to carry out outside directional pressure release, and the advantages that overall structure is simple compact, and is with low costs, it is high to hold the chamber utilization ratio, the thermal runaway protective effect is good.
Drawings
Fig. 1 is a schematic diagram of a three-dimensional explosion structure of a battery pack with a thermal diffusion protection structure according to the present invention;
fig. 2 is a schematic view of the internal top view structure of the battery pack with the thermal diffusion protection structure according to the present invention;
fig. 3 is a schematic top view of the battery pack with the thermal diffusion protection structure of the present invention;
FIG. 4 is a schematic view of the cross-sectional structure C-C of FIG. 3;
FIG. 5 is a schematic view of the cross-sectional structure of FIG. 3 taken along line D-D;
FIG. 6 is a schematic view of a pressure relief structure and a flow guide channel;
FIG. 7 is a schematic view showing the direction of airflow in the case cover and the case body according to the present invention;
fig. 8 is a schematic perspective view of another embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a box body; 11. an accommodating chamber; 12. a first circumferential channel; 13. a first through hole; 14. a flow guide channel; 2. a box cover; 21. a second circumferential channel; 22. a second through hole; 3. a fire-proof plate; 31. a first separator; 32. a second separator; 4. directly connecting the battery cores; 41. a tab connection part; 42. a cell stack body; 43. a lug end; 5. a pressure relief explosion-proof valve; 6. a pressure relief structure; 7. a seal ring; 71. a communicating hole; 8. a liquid-cooled plate; 9. fireproof foam.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1-6, the thermal diffusion protection structure for a battery pack of this embodiment includes a case cover 2, a case body 1 and a fireproof plate 3, a pressure relief explosion-proof valve 5 is disposed on the case body 1 or/and the case cover 2, the fireproof plate 3 is disposed in the case body 1 and divides the inside of the case body 1 into an independent closed accommodating cavity 11 for accommodating a cell stacked body 42 or a cell direct-connection group 4, a flow guide channel 14 communicated with the pressure relief explosion-proof valve 5 is formed on the case cover 2 and the case body 1, and a pressure relief structure 6 for communicating or isolating the flow guide channel 14 and the accommodating cavity 11 is disposed on the case cover 2 and the case body 1. The box cover 2 is covered on the box body 1, and the box body 1 and the box cover 2 are sealed through a sealing ring 7. The sealing ring 7 can be provided with a communicating hole 71, the end surface of the box body 1 is provided with a first through hole 13 communicated with the upper flow guide channel 14, the end surface of the box cover 2 is provided with a second through hole 22 communicated with the upper flow guide channel 14, the first through hole 13, the communicating hole 71 and the second through hole 22 are correspondingly arranged and communicated with each other, and the flow guide channel 14 on the box cover 2 is communicated with the flow guide channel on the box body 1.
Fig. 2 shows the direction of the arrow in the flow guide channel 14, that is, the flow direction of the heat and the air pressure along the flow guide channel 14 after the thermal runaway of the battery cell occurs.
The battery package thermal diffusion protective structure of this embodiment, directly link directly to organize electric core stack body or electric core and directly put into the chamber that holds of box, directly utilize the box, the case lid, the isobaric electric core such as PLASTIC LAMINATED board or electric core stack body apron has been saved, form similar sandwich structure, and set up pressure release structure and water conservancy diversion passageway on box or case lid, utilize the interior cavity of case lid or box to carry out the heat water conservancy diversion, and utilize the explosion-proof valve of pressure release to carry out outside directional pressure release, the simple compactness of overall structure has, and low cost, it is high to hold the chamber high-usage, the good advantage of thermal runaway protective effect. The battery package thermal diffusion protective structure of this embodiment can carry out preliminary heat conduction with the heat by box or chassis, carries out directional pressure release by box curb plate pressure release mouth again outside to battery system, and the thermal diffusion protective effect is good.
Example 2
As shown in fig. 1-6, the thermal diffusion protection structure for a battery pack of this embodiment includes a case cover 2, a case body 1 and a fireproof plate 3, a pressure relief explosion-proof valve 5 is disposed on the case body 1 or/and the case cover 2, the fireproof plate 3 is disposed in the case body 1 and divides the inside of the case body 1 into an independent closed accommodating cavity 11 for accommodating a cell stacked body 42 or a cell direct-connection group 4, a flow guide channel 14 communicated with the pressure relief explosion-proof valve 5 is formed on the case cover 2 and the case body 1, and a pressure relief structure 6 for communicating or isolating the flow guide channel 14 and the accommodating cavity 11 is disposed on the case cover 2 and the case body 1. The box cover 2 is covered on the box body 1, and the box body 1 and the box cover 2 are sealed through a sealing ring 7. The sealing ring 7 can be provided with a communicating hole 71, the end surface of the box body 1 is provided with a first through hole 13 communicated with the upper flow guide channel 14, the end surface of the box cover 2 is provided with a second through hole 22 communicated with the upper flow guide channel 14, the first through hole 13, the communicating hole 71 and the second through hole 22 are correspondingly arranged and communicated with each other, and the flow guide channel 14 on the box cover 2 is communicated with the flow guide channel on the box body 1.
Fig. 2 shows the direction of the arrow in the flow guide channel 14, that is, the flow direction of the heat and the air pressure along the flow guide channel 14 after the thermal runaway of the battery cell occurs.
As shown in fig. 1 and fig. 2, in the embodiment, the fire-proof plate 3 is disposed in the box body 1, and the box body 1 is divided into accommodating cavities 11 for accommodating the cell direct connection group 4, each of the flow guide channels 14 is provided with at least one row of the pressure relief structures 6, each of the flow guide channels 14 is respectively arranged corresponding to a row of the tab connection 41 or the tab end 43 of the cell direct connection group 4 in each accommodating cavity 11, and each of the pressure relief structures 6 on the flow guide channel 14 is respectively arranged corresponding to a row of the tab connection 41 or the tab end 43. The position of electric core thermal runaway generally takes place in utmost point ear junction or utmost point ear end, set up the water conservancy diversion passageway in each one side of utmost point ear junction or utmost point ear end, the water conservancy diversion passageway does not pass through electric core, and the utmost point ear junction or the pressure release structure on utmost point ear end and the water conservancy diversion passageway of directly organizing with electric core corresponds and arranges, in case the utmost point ear junction takes place the thermal runaway, the heat and the atmospheric pressure of its production at first can be obstructed by the PLASTIC LAMINATED, prevent that it from stretching to other electric cores, when heat and atmospheric pressure that the electric core that became invalid produced reach the certain degree, can open the pressure release structure, make the heat in time get into the water conservancy diversion passageway of case lid or box, after box and case lid heat dissipation, reach explosion-proof pressure release mouth and carry out directional pressure release, guarantee vehicle user safety. The thermal diffusion protection structure of this embodiment, heat and atmospheric pressure are from taking place the end to getting rid of battery system, and the whole journey has reliable water conservancy diversion passageway, and the thermal diffusion protective effect is good.
As shown in fig. 2, the peripheral sides of the case body 1 and the case cover 2 of the present embodiment are respectively provided with a first circumferential channel 12 and/or a second circumferential channel 21, the diversion channel 14 on the case body 1 and/or the case cover 2 is respectively communicated with the first circumferential channel 12 and/or the second circumferential channel 21, and the first circumferential channel 12 or/and the second circumferential channel 21 is communicated with the pressure relief explosion-proof valve 5. The heat of each flow guide channel can be discharged out through the pressure relief explosion-proof valve by utilizing the circumferential channel.
As shown in fig. 2, only the first circumferential channel 12 may be provided on the case 1, the flow guide channel 14 on the case cover 2 is communicated with the first circumferential channel 12 on the case 1 through the first through hole 13, the communication hole 71 and the second through hole 22, so that the flow guide channel 14 on the case 1 is communicated with the first circumferential channel 12, and when thermal runaway occurs, the air flow and heat in the flow guide channel 14 may be discharged through the pressure relief explosion-proof valve 5 through the first circumferential channel 12. Or a first circumferential channel 12 and a second circumferential channel 21 may be respectively disposed on the box body 1 and the box cover 2, so that the diversion channel 14 on the box cover 2 is communicated with the second circumferential channel 21, the diversion channel 14 on the box body 1 is communicated with the first circumferential channel 12, the first circumferential channel 12 and the second circumferential channel 21 are respectively communicated with the first through hole 13, the communication hole 71 and the second through hole 22, and when thermal runaway occurs, the air flow and heat in the diversion channel 14 on the box body 1 or the box cover 2 may be discharged through the pressure relief explosion-proof valve 5 through the first circumferential channel 12 or the second circumferential channel 21. Similarly, only the second circumferential channel 21 may be provided on the case cover 2, the diversion channel 14 on the case body 1 is communicated with the second circumferential channel 21 on the case cover 2 through the first through hole 13, the communication hole 71 and the second through hole 22, so that the diversion channel 14 on the case cover 2 is communicated with the second circumferential channel 21, and when thermal runaway occurs, the airflow and heat in the diversion channel 14 can be discharged through the second circumferential channel 21 through the pressure-relief explosion-proof valve 5.
As shown in fig. 1 and fig. 2, the battery pack thermal diffusion protection structure of the present embodiment further includes a liquid cooling plate 8, where the liquid cooling plate 8 and the fireproof plate 3 are respectively disposed in the box body 1 and divide the inside of the box body 1 into accommodating cavities for accommodating the cell stacked body 42 or the cell straight connecting group 4. Utilize liquid cooling plate structure and PLASTIC LAMINATED structure cooperation, make the liquid cooling plate play the effect of PLASTIC LAMINATED, saved the PLASTIC LAMINATED use, the cost is reduced, and the structure is compacter, has further increased and has held the chamber utilization ratio.
As shown in fig. 1 and 6, the fireproof plate 3 of the present embodiment includes a first partition plate 31, and the first partition plate 31 is parallel to and spaced apart from the liquid cooling plate 8. The fire retardant panel 3 further includes a second partition 32, the second partition 32 being disposed at an angle to the first partition 31, and may be disposed vertically, as shown in fig. 1. The liquid cooling plate and the first partition plate are arranged in parallel, and the liquid cooling plate serves as a fireproof plate, so that the fireproof plate can be saved, the structure is compact, and the cost is reduced.
The pressure relief structure 6 of this embodiment comprises a pressure relief membrane or a one-way valve. The pressure relief film or the one-way valve is adopted, so that the air flow only flows in one direction from the box body to the flow guide channel, and the air flow is prevented from flowing into other accommodating cavities from the flow guide channel through other pressure relief films or the one-way valve.
The battery package thermal diffusion protective structure of this embodiment, directly link directly to organize electric core stack body or electric core and directly put into the chamber that holds of box, directly utilize the box, the case lid, the isobaric electric core such as PLASTIC LAMINATED board or electric core stack body apron has been saved, form similar sandwich structure, and set up pressure release structure and water conservancy diversion passageway on box or case lid, utilize the interior cavity of case lid or box to carry out the heat water conservancy diversion, and utilize the explosion-proof valve of pressure release to carry out outside directional pressure release, the simple compactness of overall structure has, and low cost, it is high to hold the chamber high-usage, the good advantage of thermal runaway protective effect. The battery package thermal diffusion protective structure of this embodiment can carry out preliminary heat conduction with the heat by box or chassis, carries out directional pressure release by box curb plate pressure release mouth again outside to battery system, and the thermal diffusion protective effect is good.
Example 3
As shown in fig. 1-8, the thermal diffusion protection structure for a battery pack of this embodiment includes a case cover 2, a case body 1 and a fireproof plate 3, a pressure relief explosion-proof valve 5 is provided on the case body 1 or/and the case cover 2, the fireproof plate 3 is disposed in the case body 1 and divides the inside of the case body 1 into an independent closed accommodating cavity 11 for accommodating a cell stacked body 42 or a cell direct-connection group 4, a flow guide channel 14 communicated with the pressure relief explosion-proof valve 5 is formed on the case cover 2 and the case body 1, and a pressure relief structure 6 for communicating or isolating the flow guide channel 14 and the accommodating cavity 11 is provided on the case cover 2 and the case body 1. The box cover 2 is covered on the box body 1, and the box body 1 and the box cover 2 are sealed through a sealing ring 7. The sealing ring 7 can be provided with a communicating hole 71, the end surface of the box body 1 is provided with a first through hole 13 communicated with the upper flow guide channel 14, the end surface of the box cover 2 is provided with a second through hole 22 communicated with the upper flow guide channel 14, the first through hole 13, the communicating hole 71 and the second through hole 22 are correspondingly arranged and communicated with each other, and the flow guide channel 14 on the box cover 2 is communicated with the flow guide channel on the box body 1.
Fig. 2 and 7 show the arrow direction in the flow guide channel 14, that is, the flow direction of the heat and the air pressure along the flow guide channel 14 after the cell thermal runaway occurs.
As shown in fig. 8, the fire-proof plate 3 is disposed in the box body 1, and divides the box body 1 into accommodating cavities 11 for accommodating the cell stack bodies 42, at least one row of the pressure relief structures 6 is disposed on each flow guide channel 14, each flow guide channel 14 is disposed corresponding to a row of the tab ends 43 of the cell stack bodies 42 in each accommodating cavity 11, the pressure relief structures 6 on each flow guide channel 14 are disposed corresponding to the tab ends 43 of each row, and the tab ends 43 adjacent to two adjacent cell stack bodies 42 share one flow guide channel 14 or one flow guide channel 14. And two rows of pressure relief structures can be arranged on the shared flow guide channel. The position of electric core thermal runaway generally takes place at utmost point ear end, set up the water conservancy diversion passageway in each one side of being listed as utmost point ear end, the water conservancy diversion passageway does not pass through electric core, and correspond the pressure release structure with on electric core stack utmost point ear end and the water conservancy diversion passageway and arrange, in case utmost point ear end takes place the thermal runaway, the heat and the atmospheric pressure of its production can be at first by the PLASTIC LAMINATED separation, prevent that it from stretching to other electric cores, when the heat and the atmospheric pressure that the electric core that became invalid produced reach the certain degree, can open the pressure release structure, make the heat in time get into the water conservancy diversion passageway of case lid or box, after box and case lid heat dissipation, reach explosion-proof pressure release mouth and carry out directional pressure release, guarantee vehicle user safety.
As shown in fig. 2, the peripheral sides of the case body 1 and the case cover 2 of the present embodiment are respectively provided with a first circumferential channel 12 and/or a second circumferential channel 21, the diversion channel 14 on the case body 1 and/or the case cover 2 is respectively communicated with the first circumferential channel 12 and/or the second circumferential channel 21, and the first circumferential channel 12 or/and the second circumferential channel 21 is communicated with the pressure relief explosion-proof valve 5. The heat of each flow guide channel can be discharged out through the pressure relief explosion-proof valve by utilizing the circumferential channel.
As shown in fig. 2, only the first circumferential channel 12 may be provided on the case 1, the flow guide channel 14 on the case cover 2 is communicated with the first circumferential channel 12 on the case 1 through the first through hole 13, the communication hole 71 and the second through hole 22, so that the flow guide channel 14 on the case 1 is communicated with the first circumferential channel 12, and when thermal runaway occurs, the air flow and heat in the flow guide channel 14 may be discharged through the pressure relief explosion-proof valve 5 through the first circumferential channel 12. Or a first circumferential channel 12 and a second circumferential channel 21 may be respectively disposed on the box body 1 and the box cover 2, so that the diversion channel 14 on the box cover 2 is communicated with the second circumferential channel 21, the diversion channel 14 on the box body 1 is communicated with the first circumferential channel 12, the first circumferential channel 12 and the second circumferential channel 21 are respectively communicated with the first through hole 13, the communication hole 71 and the second through hole 22, and when thermal runaway occurs, the air flow and heat in the diversion channel 14 on the box body 1 or the box cover 2 may be discharged through the pressure relief explosion-proof valve 5 through the first circumferential channel 12 or the second circumferential channel 21. Similarly, only the second circumferential channel 21 may be provided on the case cover 2, the diversion channel 14 on the case body 1 is communicated with the second circumferential channel 21 on the case cover 2 through the first through hole 13, the communication hole 71 and the second through hole 22, so that the diversion channel 14 on the case cover 2 is communicated with the second circumferential channel 21, and when thermal runaway occurs, the airflow and heat in the diversion channel 14 can be discharged through the second circumferential channel 21 through the pressure-relief explosion-proof valve 5.
As shown in fig. 1 and fig. 2, the battery pack thermal diffusion protection structure of the present embodiment further includes a liquid cooling plate 8, where the liquid cooling plate 8 and the fireproof plate 3 are respectively disposed in the box body 1 and divide the inside of the box body 1 into accommodating cavities for accommodating the cell stacked body 42 or the cell straight connecting group 4. Utilize liquid cooling plate structure and PLASTIC LAMINATED structure cooperation, make the liquid cooling plate play the effect of PLASTIC LAMINATED, saved the PLASTIC LAMINATED use, the cost is reduced, and the structure is compacter, has further increased and has held the chamber utilization ratio.
As shown in fig. 1 and 6, the fireproof plate 3 of the present embodiment includes a first partition plate 31, and the first partition plate 31 is parallel to and spaced apart from the liquid cooling plate 8. The fire retardant panel 3 further includes a second partition 32, the second partition 32 being disposed at an angle to the first partition 31, and may be disposed vertically, as shown in fig. 1. The liquid cooling plate and the first partition plate are arranged in parallel, and the liquid cooling plate serves as a fireproof plate, so that the fireproof plate can be saved, the structure is compact, and the cost is reduced.
The pressure relief structure 6 of this embodiment comprises a pressure relief membrane or a one-way valve. The pressure relief film or the one-way valve is adopted, so that the air flow only flows in one direction from the box body to the flow guide channel, and the air flow is prevented from flowing into other accommodating cavities from the flow guide channel through other pressure relief films or the one-way valve.
The battery package thermal diffusion protective structure of this embodiment, directly link directly to organize electric core stack body or electric core and directly put into the chamber that holds of box, directly utilize the box, the case lid, the isobaric electric core such as PLASTIC LAMINATED board or electric core stack body apron has been saved, form similar sandwich structure, and set up pressure release structure and water conservancy diversion passageway on box or case lid, utilize the interior cavity of case lid or box to carry out the heat water conservancy diversion, and utilize the explosion-proof valve of pressure release to carry out outside directional pressure release, the simple compactness of overall structure has, and low cost, it is high to hold the chamber high-usage, the good advantage of thermal runaway protective effect. The battery package thermal diffusion protective structure of this embodiment can carry out preliminary heat conduction with the heat by box or chassis, carries out directional pressure release by box curb plate pressure release mouth again outside to battery system, and the thermal diffusion protective effect is good.
Example 4
As shown in fig. 1 to 6, in this embodiment, on the basis of any one of embodiments 1 to 3, the fire-proof plate 3 may be used to divide the box body 1 into an upper layer and a lower layer of accommodating cavities, the accommodating cavity 11 located at the upper layer is conducted or isolated from the flow guide channel 14 on the box cover 2 through the pressure relief structure 6, and the accommodating cavity 11 located at the lower layer is conducted or isolated from the flow guide channel 14 on the box body 1 through the pressure relief structure 6. Or the fire-proof plate 3 only has a vertical plate and only one layer is arranged. Adopt two-layer about the upper and lower layer to hold the chamber and carry out the fireproof design, the one deck takes place the thermal runaway, can not influence the electric core on other layers, and heat and atmospheric pressure derive efficiently moreover.
As shown in fig. 1 to 6, the fire prevention plate 3 includes a first partition plate 31 and a second partition plate 32, the first partition plate 31 and the second partition plate 32 are vertically connected, and of course, the first partition plate 31 may not be provided at a position where the liquid cooling plate is provided, and the structure of the fire prevention plate 3 in fig. 1 may be adopted.
The battery package thermal diffusion protective structure of this embodiment, electric core take place the thermal runaway back, can follow the pressure release structure of case lid on or bottom half and carry out the pressure release, can not take place to disturb other electric cores.
Example 5
On the basis of any one of embodiments 1 to 3, the fire-proof plate can be used to separate 3 the box body 1 into an upper multilayer accommodating cavity and a lower multilayer accommodating cavity, the accommodating cavity 11 on the upper layer and the flow guide channel 14 on the box cover 2 are communicated or isolated through the pressure relief structure 6, the accommodating cavity 11 on the lower layer and the flow guide channel 14 on the box body 1 are communicated or isolated through the pressure relief structure 6, and the accommodating cavity 11 on the middle layer is communicated or isolated through the fire-proof channel on the fire-proof plate 3 and the pressure relief structure 6 on the fire-proof channel and the flow guide channel 14 on the box body 1 or the box cover 2. The multilayer accommodating cavity can be designed for different requirements to place multilayer battery cores.
The battery pack thermal diffusion protection structure of the embodiment can be suitable for a battery pack structure of a multilayer battery core.
Example 6
As shown in fig. 1 to fig. 6, the battery pack of the present embodiment includes a cell stack body 42 or a cell direct connection group 4, and the protection structure, where the cell stack body 42 or the cell direct connection group 4 is installed in the accommodating cavity 11 in the box 1. The battery cell stacked body 42 or the battery cell direct connection group 4 is respectively contacted with the box cover 2 or the box body 1 through the fireproof foam 9.
The battery package of this embodiment, directly link directly to organize with electric core stack body or electric core and directly put into the chamber that holds of box, directly utilize the box, the case lid, the isobaric electric core such as PLASTIC LAMINATED board or electric core stack body apron, and set up pressure release structure and water conservancy diversion passageway on box or case lid, utilize the cavity to carry out the heat water conservancy diversion in case lid or the box, and utilize the explosion-proof valve of pressure release to carry out outside directional pressure release, and the battery package has the advantages that overall structure is simple compact, and is with low costs, it is high to hold the chamber utilization ratio, the thermal runaway protection effect is good.
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 indicated based on 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.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a battery package thermal diffusion protective structure, a serial communication port, including case lid, box and PLASTIC LAMINATED, be equipped with the explosion-proof valve of pressure release on box or/and the case lid, the PLASTIC LAMINATED is arranged in the box and will separate into in the box and be used for placing electric core stack body or electric core and directly link the independent confined chamber that holds of group, the case lid with be formed with on the box respectively with the water conservancy diversion passageway of explosion-proof valve intercommunication of pressure release, the case lid with be equipped with respectively on the box and switch on or keep apart water conservancy diversion passageway and the pressure release structure who holds the chamber.
2. The battery pack thermal diffusion protection structure of claim 1, wherein the fire-proof plate is disposed in the box and divides the box into accommodating cavities for accommodating cells directly connected to each other, at least one row of the pressure relief structures is disposed on each flow guide channel, each flow guide channel is disposed corresponding to a tab junction or a tab end row of a cell directly connected to each accommodating cavity, and the pressure relief structure on each flow guide channel is disposed corresponding to a tab junction or a tab end row of a cell directly connected to each accommodating cavity.
3. The battery pack thermal diffusion protection structure according to claim 1, wherein the fireproof plate is disposed in the box and divides the box into accommodating cavities for accommodating the cell stack, each flow guide channel is provided with at least one row of the pressure relief structures, each flow guide channel is arranged corresponding to a row where the tab ends of the cell stack in each accommodating cavity are located, each pressure relief structure on each flow guide channel is arranged corresponding to a tab end in each row, and the tab ends adjacent to two adjacent cell stacks share one flow guide channel or use one flow guide channel.
4. The battery pack thermal diffusion protection structure according to claim 1, wherein the fire-proof plate divides the box body into an upper accommodating cavity and a lower accommodating cavity, the upper accommodating cavity is communicated or isolated with the flow guide channel on the box cover through a pressure relief structure, and the lower accommodating cavity is communicated or isolated with the flow guide channel on the box body through a pressure relief structure.
5. The battery pack thermal diffusion protection structure according to claim 1, wherein the fire-proof plate divides the box body into an upper layer accommodating cavity and a lower layer accommodating cavity, the accommodating cavity on the upper layer and the flow guide channel on the box cover are communicated or isolated through a pressure relief structure, the accommodating cavity on the lower layer and the flow guide channel on the box body are communicated or isolated through a pressure relief structure, and the accommodating cavity on the middle layer is communicated or isolated with the flow guide channel on the box body or the box cover through a fire-proof channel on the fire-proof plate and a pressure relief structure on the fire-proof channel.
6. The heat diffusion protection structure for the battery pack according to claim 1, wherein the peripheral sides of the box body and/or the box cover are respectively provided with a first peripheral channel and/or a second peripheral channel, the diversion channel on the box body and/or the box cover is respectively communicated with the first peripheral channel and/or the second peripheral channel, and the first peripheral channel and/or the second peripheral channel is communicated with the pressure relief explosion-proof valve.
7. The battery pack thermal diffusion protection structure of claim 1, further comprising a liquid cooling plate, wherein the liquid cooling plate and the fireproof plate are respectively arranged in the box body and divide the box body into accommodating cavities for accommodating the cell stacked body or the cell direct connection group.
8. The battery pack thermal diffusion protection structure of claim 7, wherein said fire shield comprises a first partition plate, said first partition plate being parallel to and spaced from said liquid cooled panel.
9. The package thermal diffusion protection structure of claim 1, wherein the pressure relief structure comprises a pressure relief film or a one-way valve.
10. A battery pack, comprising a stack of cells or a straight-through group of cells mounted in a receiving cavity in the case, and the protective structure of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120720932.9U CN214378654U (en) | 2021-04-09 | 2021-04-09 | Battery package thermal diffusion protective structure and battery package |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120720932.9U CN214378654U (en) | 2021-04-09 | 2021-04-09 | Battery package thermal diffusion protective structure and battery package |
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| CN214378654U true CN214378654U (en) | 2021-10-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115224394A (en) * | 2022-09-20 | 2022-10-21 | 广东采日能源科技有限公司 | Battery unit and battery module |
| CN115295954A (en) * | 2022-08-31 | 2022-11-04 | 浙江吉利控股集团有限公司 | Box structure, battery package and vehicle |
| CN115312942A (en) * | 2022-08-19 | 2022-11-08 | 孚能科技(赣州)股份有限公司 | Directional pressure relief pressing plate, heat dissipation assembly, battery stacking module and battery pack |
| WO2023093432A1 (en) * | 2021-11-23 | 2023-06-01 | 湖北亿纬动力有限公司 | Battery pack |
| WO2023173714A1 (en) * | 2022-04-20 | 2023-09-21 | 湖北亿纬动力有限公司 | Battery box and battery module |
| WO2024078047A1 (en) * | 2022-10-13 | 2024-04-18 | 比亚迪股份有限公司 | Battery pack and vehicle |
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2021
- 2021-04-09 CN CN202120720932.9U patent/CN214378654U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023093432A1 (en) * | 2021-11-23 | 2023-06-01 | 湖北亿纬动力有限公司 | Battery pack |
| WO2023173714A1 (en) * | 2022-04-20 | 2023-09-21 | 湖北亿纬动力有限公司 | Battery box and battery module |
| CN115312942A (en) * | 2022-08-19 | 2022-11-08 | 孚能科技(赣州)股份有限公司 | Directional pressure relief pressing plate, heat dissipation assembly, battery stacking module and battery pack |
| CN115312942B (en) * | 2022-08-19 | 2023-09-08 | 孚能科技(赣州)股份有限公司 | Directional pressure release clamp plate, radiating component, battery stack module and battery package |
| CN115295954A (en) * | 2022-08-31 | 2022-11-04 | 浙江吉利控股集团有限公司 | Box structure, battery package and vehicle |
| CN115295954B (en) * | 2022-08-31 | 2024-04-30 | 浙江吉利控股集团有限公司 | Box structure, battery pack and vehicle |
| CN115224394A (en) * | 2022-09-20 | 2022-10-21 | 广东采日能源科技有限公司 | Battery unit and battery module |
| CN115224394B (en) * | 2022-09-20 | 2022-11-22 | 广东采日能源科技有限公司 | Battery unit and battery module |
| WO2024078047A1 (en) * | 2022-10-13 | 2024-04-18 | 比亚迪股份有限公司 | Battery pack and vehicle |
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