CN219435980U - Phase change temperature control structure of lithium battery - Google Patents
Phase change temperature control structure of lithium battery Download PDFInfo
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- CN219435980U CN219435980U CN202320565924.0U CN202320565924U CN219435980U CN 219435980 U CN219435980 U CN 219435980U CN 202320565924 U CN202320565924 U CN 202320565924U CN 219435980 U CN219435980 U CN 219435980U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a phase change temperature control structure of a lithium battery, which comprises a battery box and a temperature control mechanism; the battery box comprises a bottom shell, a sealing plate and an upper box cover; a water storage tank is arranged in the bottom shell, the sealing plate is arranged on the bottom shell, and the upper box cover is detachably connected to the bottom shell; the temperature control mechanism comprises a phase change packaging shell, a water pumping part and a water guiding part; a plurality of battery cavities are arranged on the phase-change packaging shell in an array manner; the phase change packaging shell is also provided with a plurality of temperature control cavities which are communicated with the battery cavities one by one; the water pumping part is arranged outside the upper box cover, and the water pumping end of the water pumping part is used for pumping the cooling liquid in the water storage tank; the water guide part is arranged in the temperature control cavity. The lithium battery temperature control structure solves the technical problems that in the prior art, the lithium battery temperature control structure only depends on a phase change material to absorb heat and cool, the cooling efficiency is limited, the heat dissipation effect is poor, and the lithium battery is easy to operate in a high-temperature environment, so that certain potential safety hazards exist.
Description
Technical Field
The utility model relates to the technical field of lithium battery packs, in particular to a phase-change temperature control structure of a lithium battery.
Background
In a power battery thermal management system, air cooling, liquid cooling and phase change material cooling are three cooling modes which are commonly used, wherein the first two modes are active thermal management, and the third mode is passive thermal management; the phase change material is used as a passive heat management mode for the power battery heat management system, is an emerging development direction, and has the advantages of high efficiency, energy conservation, small temperature fluctuation, heat failure prevention and the like compared with the traditional modes of air cooling, liquid cooling and the like; the power battery is one of the core components of the new energy automobile, the safety and the driving mileage of the new energy automobile are greatly partially dependent on the characteristics of the power battery, the development of the lead-acid battery is limited by the problems of large quality, poor endurance capacity, environmental pollution and the like, the development and popularization of the nickel-hydrogen battery are restricted because of the problems of high self-discharge rate, high raw material cost, irreversible damage caused by overdischarge and the like, the use of the battery is still restricted, the use of the battery still has potential safety hazards, the thermal safety accidents caused by untimely heat dissipation usually occur, the battery can generate a large amount of heat in the charging and discharging process, particularly under the condition of high-rate charging and discharging, the heat generated by the battery can be greatly increased, if the heat cannot be timely and effectively dissipated, the heat accumulation inside the battery or the battery pack can be caused, the performance of the battery and the battery is finally deteriorated, and the combustion and explosion of the battery and the battery pack are even caused, and the life and property safety are endangered;
in China patent CN205429110U, a lithium battery pack using a phase change material to participate in heat management is provided, and the device uses the characteristics that the phase change material participates in heat management, can effectively control the working temperature of a battery and reduce the temperature difference between lithium battery cores; however, the heat conductivity of the phase change material is limited, only the phase change material is used for radiating heat, the heat is still worse, and the heat is difficult to dissipate in time after the material absorbs heat;
therefore, we propose a lithium battery phase-change temperature control structure.
Disclosure of Invention
The utility model aims to overcome the technical defects, and provides a phase-change temperature control structure of a lithium battery, which solves the technical problems that in the prior art, the temperature control structure of the battery only depends on phase-change materials to absorb heat and reduce temperature, the cooling efficiency is limited, the heat dissipation effect is poor, and the lithium battery is easy to operate in a high-temperature environment, so that a certain potential safety hazard exists.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a phase change temperature control structure of a lithium battery comprises a battery box and a temperature control mechanism;
the battery box comprises a bottom shell, a sealing plate and an upper box cover; a water storage tank is arranged in the bottom shell, the sealing plate is arranged on the bottom shell, and the upper box cover is detachably connected to the bottom shell;
the temperature control mechanism comprises a phase change packaging shell, a water pumping part and a water guiding part; a plurality of battery cavities are arranged on the phase-change packaging shell in an array manner; the phase change packaging shell is also provided with a plurality of temperature control cavities which are communicated with the battery cavities one by one; the water pumping part is arranged outside the upper box cover, and the water pumping end of the water pumping part is used for pumping the cooling liquid in the water storage tank; the water guide part is arranged in the temperature control cavity, one axial end of the water guide part is communicated with the water discharge end of the water pumping part, and the tail end of the water guide part penetrates through the sealing plate and extends into the water storage groove.
In a specific embodiment, a water outlet and a water filling port are respectively formed in the outer side of the bottom shell, the water pumping part is connected to the upper flange of the water outlet, and a sealing plug is arranged on the water filling port.
In a specific embodiment, positioning grooves are formed in four corners of the inner wall of the water storage groove, and a plurality of positioning columns matched with the positioning grooves are fixed on one surface of the sealing plate, which faces the water storage groove.
In a specific embodiment, the phase change package is a modified paraffin package.
In a specific embodiment, a plurality of through holes are formed in the circumferential direction of the inner wall of the battery cavity, and the through holes enable the battery cavity to be communicated with the temperature control cavity.
In a specific embodiment, the water pumping part comprises a pump body, a water supply pipe, a water diversion plate and a water supply pipe; the pump body install in the upper box cover outside, the pumping end of the pump body with the outlet is connected, the drainage end of the pump body is connected with the delivery pipe, the end intercommunication of delivery pipe has the water diversion plate, the water diversion plate set up in the top of upper box cover, the bottom of water diversion plate is connected with a plurality of can extend to the inside feed pipe of water guide.
In a specific embodiment, the water guide part comprises a water guide pipe, the water guide pipe is installed in the temperature control cavity, and the tail end of the water guide pipe penetrates through the sealing plate and extends into the water storage groove; the upper end of the water guide pipe is connected with the water supply pipe.
In a specific embodiment, the water feed pipe cross-sectional area is smaller than the water guide pipe cross-sectional area.
In a specific embodiment, the number of the battery cavities is 16, and is 4x4 arranged on the phase change package case.
In a specific embodiment, the number of the temperature control cavities is 9, and the temperature control cavities are 3x3 arranged on the phase change packaging shell.
Compared with the prior art, the utility model has the beneficial effects that:
1. compared with the prior art, the utility model has better heat dissipation effect, the water storage groove is arranged in the bottom shell and is used for placing cooling liquid, the battery cavity is arranged in the phase-change packaging shell and is used for storing lithium batteries, the temperature control cavity is arranged among the battery cavities in an array manner and is communicated with the battery cavity, so that the water guide part is conveniently placed in the temperature control cavity, the cooling liquid in the water storage groove is extracted through the water pumping part and is led into the water guide part, and when the cooling liquid flows in the water guide part, the heat in the battery cavity can be taken away, thereby avoiding heat absorption by totally relying on phase-change materials, and effectively improving the cooling efficiency of the whole battery box.
Drawings
FIG. 1 is an expanded schematic view of the present utility model;
FIG. 2 is a schematic diagram of a temperature control mechanism according to the present utility model;
FIG. 3 is a schematic diagram of a phase change package according to the present utility model.
In the figure: 1. a battery box; 11. a bottom case; 111. a water storage tank; 112. a water outlet; 113. a positioning groove; 12. a sealing plate; 121. positioning columns; 13. an upper case cover; 2. a temperature control mechanism; 21. a phase change package; 211. a battery cavity; 2111. a through hole; 212. a temperature control cavity; 22. a water pumping part; 221. a pump body; 222. a water supply pipe; 223. a water diversion plate; 2231. a water supply pipe; 23. a water guide part; 231. a water guide pipe.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, the phase change temperature control structure of a lithium battery provided by the utility model comprises a battery box 1 and a temperature control mechanism 2.
The battery box 1 comprises a bottom shell 11, a sealing plate 12 and an upper box cover 13; a water storage groove 111 is formed in the bottom shell 11, a sealing plate 12 is mounted on the bottom shell 11, and an upper box cover 13 is detachably connected to the bottom shell 11.
The temperature control mechanism 2 comprises a phase change packaging shell 21, a water pumping part 22 and a water guiding part 23; a plurality of battery cavities 211 are arranged on the phase-change packaging shell 21 in an array manner; the phase change packaging shell 21 is also provided with a plurality of temperature control cavities 212 which are communicated with the battery cavities 211 one by one; the pumping part 22 is arranged outside the upper case cover 13, and the pumping end of the pumping part 22 is used for pumping the cooling liquid in the water storage tank 111; the water guide 23 is installed in the temperature control chamber 212, one axial end of the water guide 23 communicates with the water discharge end of the water pumping section 22, and the end of the water guide 23 penetrates the sealing plate 12 and extends into the water storage tank 111.
The device's radiating effect is better, set up the catch basin 111 in drain pan 11, be used for placing the coolant liquid, set up the battery chamber 211 of array in phase transition encapsulation shell 21, be used for depositing the lithium cell, and set up the control by temperature change chamber 212 in array between a plurality of battery chambers 211, be used for placing water guide part 23, and make control by temperature change chamber 212 and battery chamber 211 intercommunication, make things convenient for water pumping part 22 to guide into the inside cooling liquid of water guide part 23 like this after, the inside heat of battery chamber 211 can be taken away to the coolant liquid of flow when water guide part 23 removes, can reach better radiating effect like this, phase transition encapsulation shell 21 is made by phase change material simultaneously, also can adsorb certain heat, through multiple cooling mode, can guarantee that the lithium cell can not move under high temperature environment, thereby very big improvement the security when whole battery case 1 uses.
In order to improve the pumping efficiency of the pumping part 22, referring to fig. 1 and 2, in a preferred embodiment, a water outlet 112 and a water filling port are respectively provided outside the bottom shell 11, the water outlet 112 is connected with the pumping part 22 in a flange manner, a sealing plug is provided on the water filling port, and the pumping part 22 comprises a pump body 221, a water supply pipe 222, a water diversion plate 223 and a water supply pipe 222; the pump body 221 is installed in the upper box cover 13 outside, and the water pumping end of the pump body 221 is connected with the outlet 112, and the water delivery pipe 222 is connected with to the water discharging end of the pump body 221, and the end intercommunication of water delivery pipe 222 has a water diversion plate 223, and water diversion plate 223 sets up in the top of upper box cover 13, and the bottom of water diversion plate 223 is connected with a plurality of water supply pipes 2231 that can extend to the inside of water guide 23.
Through offer the outlet 112 in the drain pan 11, the convenience is connected with the pumping end of the pump body 221, through the inside coolant liquid of pump body 221 extraction catch basin 111, and through the water filling mouth, then in order to conveniently add the coolant liquid in to the drain pan 11, and set up the sealing plug, then in order to ensure the leakproofness of drain pan 11, avoid appearing the condition of weeping, when the coolant liquid of needs extraction, liquid in the catch basin 111 is extracted through the pump body 221 to transport by delivery pipe 222, and with its leading-in water diversion board 223, by water supply pipe 2231 of water diversion board 223 lower extreme, in the water guide part 23.
In order to improve the connection efficiency between the sealing plate 12 and the bottom shell 11, referring to fig. 1, in a preferred embodiment, positioning slots 113 are formed at four corners of the inner wall of the water storage tank 111, and a plurality of positioning columns 121 matching with the positioning slots 113 are fixed on the surface of the sealing plate 12 facing the water storage tank 111.
Positioning grooves 113 are formed in four corners of the inner portion of the water storage groove 111, positioning columns 121 are arranged on the sealing plate 12, and the positioning columns 121 can extend into the positioning grooves 113, so that the sealing plate 12 can seal the water storage groove 111, and leakage is avoided.
In order to improve the heat dissipation efficiency of the device, please refer to fig. 3, in a preferred embodiment, the phase-change package shell 21 is a modified paraffin package body, a plurality of through holes 2111 are formed in the periphery of the inner wall of the battery cavity 211, the through holes 2111 enable the battery cavity 211 and the temperature control cavity 212 to communicate with each other, the water guide part 23 comprises a water guide pipe 231, the water guide pipe 231 is installed in the temperature control cavity 212, and the tail end of the water guide pipe 231 penetrates through the sealing plate 12 and extends into the water storage tank 111; the upper end of the water guide pipe 231 is connected with a water feed pipe 2231, the cross-sectional area of the water feed pipe 2231 is smaller than that of the water guide pipe 231, the number of the battery cavities 211 is 16, 4x4 are arranged on the phase-change packaging shell 21, and the number of the temperature control cavities 212 is 9, and 3x3 are arranged on the phase-change packaging shell 21.
The phase-change packaging shell 21 is a modified paraffin packaging body, the modified paraffin is paraffin containing foamed aluminum or expanded graphite and having a thermal conductivity of 0.24-70W/(m.K), the phase-change temperature is 30-40 ℃, a battery cavity 211 is formed in the phase-change packaging shell 21, a lithium battery is placed in the battery cavity 211, heat emitted in the use process of the battery is absorbed by a phase-change material, a temperature control cavity 212 is formed in the phase-change packaging shell 21, the temperature control cavity 212 is communicated with the battery cavity 211, and when a cooling liquid flows in the water guide pipe 231, heat emitted by the battery can be taken away, so that the temperature of a space where the battery is located is further reduced, and the internal temperature is prevented from being too high.
For a better understanding of the present utility model, the following details of the operation of a phase-change temperature control structure for a lithium battery according to the present utility model are described with reference to fig. 1 to 3: because the upper case cover 13 is detachably connected with the bottom case 11 and forms a battery case 1, a lithium battery is placed in the battery cavity 211, the pump body 221 extracts cooling liquid stored in the water storage tank 111 through the water outlet 112, the cooling liquid is led into the water distribution plate 223 through the water supply pipe 222, the water supply pipe 2231 at the lower end of the water distribution plate 223 is transmitted into the water guide pipe 231, the water guide pipe 231 is arranged in the temperature control cavity 212, the temperature control cavity 212 is communicated with the battery cavity 211 through the through hole 2111, and therefore, when the cooling liquid flows in the water guide pipe 231, heat in the battery cavity 211 can be taken away through the through hole 2111, so that the effect of cooling the lithium battery is achieved, and meanwhile, the phase change packaging shell 21 is a modified paraffin packaging body and has a certain heat absorption effect, so that the internal temperature of the battery case 1 can be further ensured, the condition of overhigh temperature cannot occur, and the stable operation of the battery is ensured.
The above-described embodiments of the present utility model do not limit the scope of the present utility model. Any other corresponding changes and modifications made in accordance with the technical idea of the present utility model shall be included in the scope of the claims of the present utility model.
Claims (10)
1. The utility model provides a lithium cell phase transition temperature control structure which characterized in that: comprises a battery box and a temperature control mechanism;
the battery box comprises a bottom shell, a sealing plate and an upper box cover; a water storage tank is arranged in the bottom shell, the sealing plate is arranged on the bottom shell, and the upper box cover is detachably connected to the bottom shell;
the temperature control mechanism comprises a phase change packaging shell, a water pumping part and a water guiding part; a plurality of battery cavities are arranged on the phase-change packaging shell in an array manner; the phase change packaging shell is also provided with a plurality of temperature control cavities which are communicated with the battery cavities one by one; the water pumping part is arranged outside the upper box cover, and the water pumping end of the water pumping part is used for pumping the cooling liquid in the water storage tank; the water guide part is arranged in the temperature control cavity, one axial end of the water guide part is communicated with the water discharge end of the water pumping part, and the tail end of the water guide part penetrates through the sealing plate and extends into the water storage groove.
2. The lithium battery phase-change temperature control structure according to claim 1, wherein: the drain outlet and the water filling port are respectively formed in the outer side of the bottom shell, the water pumping part is connected to the upper flange of the drain outlet, and the sealing plug is arranged on the water filling port.
3. The lithium battery phase-change temperature control structure according to claim 1, wherein: positioning grooves are formed in four corners of the inner wall of the water storage groove, and a plurality of positioning columns matched with the positioning grooves are fixed on one surface of the sealing plate, which faces the water storage groove.
4. The lithium battery phase-change temperature control structure according to claim 1, wherein: the phase change packaging shell is a modified paraffin packaging body.
5. The lithium battery phase-change temperature control structure according to claim 1, wherein: a plurality of through holes are formed in the periphery of the inner wall of the battery cavity, and the battery cavity and the temperature control cavity are communicated with each other through the through holes.
6. The lithium battery phase-change temperature control structure according to claim 2, wherein: the water pumping part comprises a pump body, a water supply pipe, a water diversion plate and a water supply pipe; the pump body install in the upper box cover outside, the pumping end of the pump body with the outlet is connected, the drainage end of the pump body is connected with the delivery pipe, the end intercommunication of delivery pipe has the water diversion plate, the water diversion plate set up in the top of upper box cover, the bottom of water diversion plate is connected with a plurality of can extend to the inside feed pipe of water guide.
7. The lithium battery phase-change temperature control structure according to claim 6, wherein: the water guide part comprises a water guide pipe, the water guide pipe is arranged in the temperature control cavity, and the tail end of the water guide pipe penetrates through the sealing plate and extends into the water storage groove; the upper end of the water guide pipe is connected with the water supply pipe.
8. The lithium battery phase-change temperature control structure according to claim 7, wherein: the water supply pipe cross-sectional area is smaller than the water guide pipe cross-sectional area.
9. The lithium battery phase-change temperature control structure according to claim 1, wherein: the number of the battery cavities is 16, and the battery cavities are arranged on the phase-change packaging shell in a 4x4 mode.
10. The lithium battery phase-change temperature control structure according to claim 1, wherein: the number of the temperature control cavities is 9, and the temperature control cavities are 3x3 and are arranged on the phase change packaging shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320565924.0U CN219435980U (en) | 2023-03-21 | 2023-03-21 | Phase change temperature control structure of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320565924.0U CN219435980U (en) | 2023-03-21 | 2023-03-21 | Phase change temperature control structure of lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN219435980U true CN219435980U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320565924.0U Active CN219435980U (en) | 2023-03-21 | 2023-03-21 | Phase change temperature control structure of lithium battery |
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| CN (1) | CN219435980U (en) |
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- 2023-03-21 CN CN202320565924.0U patent/CN219435980U/en active Active
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