CN221009048U - Phase-change heat accumulating type explosion-proof battery pack - Google Patents
Phase-change heat accumulating type explosion-proof battery pack Download PDFInfo
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- CN221009048U CN221009048U CN202322560750.1U CN202322560750U CN221009048U CN 221009048 U CN221009048 U CN 221009048U CN 202322560750 U CN202322560750 U CN 202322560750U CN 221009048 U CN221009048 U CN 221009048U
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- 239000011232 storage material Substances 0.000 claims abstract description 49
- 238000005338 heat storage Methods 0.000 claims abstract description 46
- 230000017525 heat dissipation Effects 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims 2
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000012071 phase Substances 0.000 description 21
- 239000007791 liquid phase Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012782 phase change material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a phase-change heat accumulating type explosion-proof battery pack, which relates to the technical field of battery packs and comprises a bottom plate, a shell and an electric core, wherein the middle part of the shell is of a double-layer structure, the inside of the double-layer structure of the shell is an inner cavity, and a phase-change heat accumulating material is arranged in the inner cavity; still include cooling system, cooling system includes heating panel, speed governing fan and tuber pipe, and the heating panel sets up on the outer wall of shell, forms the heat dissipation wind channel between the outer wall of heating panel and shell, and the one end of shell is equipped with the air intake, and speed governing fan installs at the air intake, and the air outlet of speed governing fan passes through tuber pipe and heat dissipation wind channel intercommunication. The shell is internally provided with an inner cavity for storing the phase-change heat storage material, and the phase-change heat storage material can absorb and store heat released by the battery cell, so that the temperature rise speed of the battery cell is slowed down, and the phenomena of ignition and explosion are prevented. The heat dissipation system is used for performing air-cooled cooling on the phase-change heat storage material, so that the phase-change heat storage material can continuously absorb heat released by the battery cell.
Description
Technical Field
The utility model relates to the technical field of battery packs, in particular to an explosion-proof battery pack.
Background
With the rapid development of new energy pure electric vehicles, the market demand of power batteries increases. The power battery is internally provided with a plurality of battery cells which are sensitive to temperature, and the power and charging current output by the power battery system are greatly influenced by the temperature. If the design of the heat dissipation system of the power battery is unreasonable, heat is easy to accumulate in the heat dissipation system, and the heat dissipation system is dangerous.
According to statistics, the normal working temperature of the power battery is 20-50 ℃, when the temperature of the power battery exceeds 60 ℃, the high temperature can decompose the positive electrode material of the power battery, so that the charging capacity of a high-voltage area is reduced, on the other hand, the contact resistance between active substances is increased, the lithium ion migration rate is reduced, and finally the battery is disabled. In addition, when the power battery is used at the temperature of more than 35 ℃ of the environment, if the power battery is deeply stepped on for a long time or is driven at an extremely high speed, the power battery can discharge a large current, a large amount of heat is generated, the heat is accumulated in the energy storage battery pack, if the power battery is not timely cooled down, thermal runaway is possibly caused, the power battery can be seriously burnt or exploded, and the life safety of a driver is endangered.
In the aspect of battery heat dissipation, the Chinese patent number 201921843194.6 discloses a battery module, which comprises a battery core and an upper cover, wherein the upper cover is arranged above the battery core and comprises a cooling plate, the cooling plate is a plastic plate and is provided with a containing cavity, and a solid-liquid phase medium is arranged in the containing cavity; the accommodation cavity of the cooling plate is at least partially arranged right above the explosion-proof valve of the battery cell. The patent utilizes the solid-liquid phase medium stored in the accommodating cavity of the cooling plate to absorb heat and delay the speed of heat spreading of the battery module.
The patent number 201920092151.2 of Chinese patent utility model discloses a secondary battery, which comprises a shell, a top cover, a bare cell and a bottom support plate, wherein the top cover is arranged at the top opening of the shell in a sealing way, the bottom support plate is positioned at the bottom of the bare cell and is encapsulated in the shell, the bottom support plate comprises a body, a phase-change material and vent holes, the phase-change material is uniformly dispersed on the body, and the vent holes are arranged on the body. When the internal temperature of the battery cell rises, the phase change material continuously absorbs heat to generate phase change reaction, and the internal temperature of the battery cell is controlled to continuously rise. However, the solid-liquid phase change medium and the phase change material have limited heat absorption, only the heat generated in a short time can be absorbed, in addition, the heat dissipation of the solid-liquid phase change material is slower, the absorbed heat cannot be timely dissipated, and when the battery continuously generates heat, the phenomenon that the battery is still easy to catch fire and explode after the solid-liquid phase change material absorbs heat and is saturated still occurs.
In view of the foregoing, there is a need for a power battery pack that is continuously heat-dissipating and explosion-proof.
Disclosure of Invention
The utility model aims to provide a phase-change heat accumulating type explosion-proof battery pack, which solves the technical problem of long-time heat dissipation of the battery pack.
In order to achieve the above purpose, the present utility model provides the following technical solutions: comprising the following steps:
The solar cell comprises a bottom plate, a shell and a battery cell, wherein the shell is connected with the bottom plate, a containing cavity is formed between the shell and the bottom plate, the battery cell is arranged in the containing cavity, the middle part of the shell is of a double-layer structure, the inside of the double-layer structure of the shell is an inner cavity, and a phase-change heat storage material is arranged in the inner cavity;
Still include cooling system, cooling system includes heating panel, speed governing fan and tuber pipe, the heating panel sets up on the outer wall of shell, form the heat dissipation wind channel between the outer wall of heating panel and shell, the one end of shell is equipped with the air intake, speed governing fan installs in air intake department, speed governing fan's air outlet passes through tuber pipe and heat dissipation wind channel intercommunication.
Through adopting above-mentioned technical scheme, the heat of electricity core release, the explosion-proof valve through the electricity core conducts the phase change heat storage material in to the shell, phase change heat storage material absorbs the heat, reduce the temperature of electricity core, the speed governing fan blows in the heat dissipation wind channel with the outside cold air of shell, cold air exchanges heat with phase change energy storage material, the temperature of phase change energy storage material is continuously reduced for the heat of electricity core release is absorbed that phase change energy storage material can be continuous, the phenomenon of catching fire, explosion is prevented to take place.
Preferably, the shell comprises a front panel, a rear panel and a side panel, wherein a partition plate is vertically arranged in the shell, the battery cell is positioned between the front panel and the partition plate, a cavity is formed between the partition plate and the rear panel, and the speed regulating fan and the air pipe are both positioned in the cavity.
Through adopting above-mentioned technical scheme, the cavity is used for installing speed governing fan and tuber pipe, and speed governing fan is located inside the shell, avoids the collision of outside article to speed governing fan.
Preferably, a plurality of air outlet holes are formed in one end, far away from the air pipe, of the heat dissipation plate, and the air outlet holes are communicated with the heat dissipation air duct.
Through adopting above-mentioned technical scheme, cold air forms hot air after the heat transfer is carried out in the heat dissipation wind channel, and hot air discharges from a plurality of apopores.
Preferably, the heat dissipation plate and the housing are of an integrally formed structure.
By adopting the technical scheme, the integrated processing technology can ensure the tightness of the inner cavity of the shell and the heat dissipation air duct.
Preferably, the side panel is provided with a phase change heat storage material injection port.
By adopting the technical scheme, the phase-change heat storage material is input into the inner cavity of the shell from the phase-change heat storage material injection port.
Preferably, a temperature probe for collecting the temperature of the phase-change heat storage material is arranged in the phase-change heat storage material.
Through adopting above-mentioned technical scheme, temperature probe real-time detection phase change heat storage material temperature to send the control system of battery package with the temperature value in real time, when reaching preset temperature value, control system control speed governing fan opens, carries out the air-cooled cooling to phase change heat storage material, and the higher the temperature of phase change heat storage material, the faster the rotational speed of speed governing fan.
Compared with the related art, the phase-change heat accumulating type explosion-proof battery pack provided by the utility model has the following beneficial effects:
1. The middle part of the shell is of a double-layer structure, and an inner cavity is arranged in the shell and is used for storing phase-change heat storage materials, the phase-change heat storage materials can absorb and store heat released by the battery cell, the temperature rising speed of the battery cell is slowed down, and the phenomena of ignition and explosion are prevented.
2. The heat dissipation system is used for performing air-cooled cooling on the phase-change heat storage material, when the temperature of the phase-change heat storage material is too high, the speed-regulating fan blows cold air into the heat dissipation air duct, and the cold air is continuously cooled by the phase-change heat storage material, so that the phase-change heat storage material can continuously absorb heat released by the battery core.
3. When the electric core is subjected to thermal runaway ignition, the inner wall of the shell is pierced, the phase-change heat storage material is released, and the phase-change heat storage material is wrapped on the electric core to extinguish fire, so that the electric core has an explosion-proof effect.
Drawings
FIG. 1 is a perspective view of a phase change heat accumulating type explosion-proof battery pack;
fig. 2 is a second perspective view of a phase-change thermal storage type explosion-proof battery pack;
FIG. 3 is a rear view of a phase change regenerative explosion-proof battery pack;
FIG. 4 is a side view of a phase change regenerative explosion-proof battery pack;
FIG. 5 is a cross-sectional view taken along the direction E-E in FIG. 4;
FIG. 6 is a cross-sectional view taken along the direction F-F in FIG. 4;
Fig. 7 is an enlarged view at a in fig. 6.
Reference numerals: 1. a bottom plate; 2. a housing; 21. a front panel; 22. a rear panel; 23. a side panel; 24. an inner cavity; 25. an air inlet; 26. a phase change heat storage material injection port; 31. a heat dissipation plate; 311. an air outlet hole; 32. a speed-regulating fan; 33. an air duct; 34. and a heat dissipation air duct.
Description of the embodiments
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and examples.
It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," and the like, refer to directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model
Furthermore, it should be noted that, in the description of the present utility model, the terms "mounted," "disposed," and "connected" are to be construed broadly, unless explicitly stated or limited otherwise. For example, the connection can be fixed connection, detachable connection or integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
Example 1
Referring to fig. 1 and 2, the phase-change heat accumulating type explosion-proof battery pack provided by the embodiment of the utility model comprises a bottom plate 1, a shell 2 and electric cores (not shown in the figure), wherein the bottom of the shell 2 is open, the shell 2 is fixedly connected with the bottom plate 1, a containing cavity is formed between the shell 2 and the bottom plate 1, and a plurality of electric cores are arranged in the containing cavity. The bottom plate 1 is provided with a lifting hole for lifting the battery pack.
As shown in fig. 4 to 7, the casing 2 includes a front panel 21, a rear panel 22 and a side panel 23, the longitudinal section of the side panel 23 is in a shape of n, the side panel 23 has a double-layer structure, the inside of the double-layer structure is a sealed inner cavity 24, and a phase change heat storage material is injected into the inner cavity 24. When the battery core releases heat, the phase-change heat storage material absorbs and stores the heat, so that the temperature in the battery core is prevented from continuously rising; when the battery core does not release or releases little heat, the heat stored in the phase-change heat storage material is conducted outwards, and the temperature of the phase-change heat storage material is reduced.
The phase change heat storage material cools down slowly, when the battery cell continuously releases heat, the heat absorption of the phase change heat storage material can reach saturation and can not continuously cool down the battery cell, therefore, the application also comprises a heat dissipation system for cooling down the phase change heat storage material, which comprises a heat dissipation plate 31, a speed regulation fan 32 and an air pipe 33, wherein the longitudinal section of the heat dissipation plate 31 is in a shape of II, the heat dissipation plate 31 is arranged on the outer wall of the shell 2, the heat dissipation plate 31 and the shell 2 are of an integrated structure, a certain interval is arranged between the heat dissipation plate 31 and the shell 2, and a heat dissipation air duct 34 is formed. The air inlet 25 is arranged on the rear panel 22 of the shell 2, the speed regulating fan 32 is arranged at the air inlet 25 to suck cold air outside the shell 2, the air outlet of the speed regulating fan 32 is communicated with the heat dissipation air duct 34 through the air duct 33, specifically, one port of the air duct 33 is communicated with the air outlet of the speed regulating fan 32, and the other port of the air duct 33 is inserted into the heat dissipation air duct 34, so that the cold air blown out by the speed regulating fan 32 can enter the heat dissipation air duct 34 to flow. The cold air flowing in the heat dissipation air duct 34 exchanges heat with the phase-change heat storage material, so that the temperature of the phase-change heat storage material can be quickly reduced, and the phase-change heat storage material can continuously absorb the heat of the battery cell.
When the electric core is subjected to thermal runaway ignition, the flame punctures the inner wall of the shell 2, the phase-change heat storage material is released, the phase-change heat storage material can be wrapped on the electric core to extinguish fire, explosion of the electric core is avoided, and the explosion-proof effect is achieved.
The foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the embodiments and the protection scope of the present utility model.
The present utility model has the following embodiments based on the above description:
Further, in order to facilitate installation of the speed-regulating fan 32 and the air duct 33, a partition plate (not shown in the figure) is vertically arranged in the housing 2, the battery cell is located between the front panel 21 and the partition plate, a cavity with a smaller space is formed between the partition plate and the rear panel 22, and the speed-regulating fan 32 and the air duct 33 are both located in the cavity.
The heat dissipating plate 31 has a plurality of air outlet holes 311 at one end thereof distant from the air duct 33, and the plurality of air outlet holes 311 are all communicated with the heat dissipating duct 34, and the speed adjusting fan 32 blows air into the heat dissipating duct 34 and finally discharges the air from the plurality of air outlet holes 311. The lower side of the side panel 23 is provided with an injection port of phase change heat storage material which is input from the phase change heat storage material injection port 26 into the inner cavity 24 of the housing 2.
In addition, a temperature probe (not shown in the figure) for acquiring the temperature of the phase-change heat storage material is provided in the phase-change heat storage material. The temperature probe detects the temperature of the phase-change heat storage material in real time, and sends the temperature value to a control system of the battery pack in real time, a maximum temperature threshold value is preset in the control system, and when the preset maximum temperature value is reached, the control system controls the speed regulation fan 32 to be started so as to perform air-cooled cooling on the phase-change heat storage material. The higher the temperature of the phase change heat storage material is, the faster the rotating speed of the speed regulating fan 32 is, and the better cooling effect is obtained.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The phase-change heat-accumulating type explosion-proof battery pack comprises a bottom plate (1), a shell (2) and a battery cell, wherein the shell (2) is connected with the bottom plate (1), a containing cavity is formed between the shell (2) and the bottom plate (1), and the battery cell is arranged in the containing cavity;
Still include cooling system, cooling system includes heating panel (31), speed governing fan (32) and tuber pipe (33), heating panel (31) set up on the outer wall of shell (2), form heat dissipation wind channel (34) between the outer wall of heating panel (31) and shell (2), the one end of shell (2) is equipped with air intake (25), speed governing fan (32) are installed in air intake (25) department, the air outlet of speed governing fan (32) communicates with heat dissipation wind channel (34) through tuber pipe (33).
2. The phase-change heat accumulating type explosion-proof battery pack according to claim 1, wherein: the shell (2) comprises a front panel (21), a rear panel (22) and a side panel (23), wherein a partition plate is vertically arranged in the shell (2), the battery cell is positioned between the front panel (21) and the partition plate, a cavity is formed between the partition plate and the rear panel (22), and the speed regulating fan (32) and the air pipe (33) are both positioned in the cavity.
3. The phase-change heat accumulating type explosion-proof battery pack according to claim 1, wherein: one end of the heat radiation plate (31) far away from the air pipe (33) is provided with a plurality of air outlet holes (311), and the air outlet holes (311) are communicated with the heat radiation air duct (34).
4. The phase-change heat accumulating type explosion-proof battery pack according to claim 1, wherein: the heat dissipation plate (31) and the shell (2) are of an integrated structure.
5. The phase-change heat accumulating type explosion-proof battery pack according to claim 2, wherein: the side panel (23) is provided with a phase change heat storage material injection port (26).
6. The phase-change heat accumulating type explosion-proof battery pack according to claim 1, wherein: and a temperature probe for collecting the temperature of the phase-change heat storage material is arranged in the phase-change heat storage material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322560750.1U CN221009048U (en) | 2023-09-20 | 2023-09-20 | Phase-change heat accumulating type explosion-proof battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322560750.1U CN221009048U (en) | 2023-09-20 | 2023-09-20 | Phase-change heat accumulating type explosion-proof battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221009048U true CN221009048U (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322560750.1U Active CN221009048U (en) | 2023-09-20 | 2023-09-20 | Phase-change heat accumulating type explosion-proof battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221009048U (en) |
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2023
- 2023-09-20 CN CN202322560750.1U patent/CN221009048U/en active Active
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