CN219832853U - Lithium battery heat radiation structure - Google Patents
Lithium battery heat radiation structure Download PDFInfo
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- CN219832853U CN219832853U CN202321260853.XU CN202321260853U CN219832853U CN 219832853 U CN219832853 U CN 219832853U CN 202321260853 U CN202321260853 U CN 202321260853U CN 219832853 U CN219832853 U CN 219832853U
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- China
- Prior art keywords
- cooling
- heat dissipation
- lithium battery
- fixedly connected
- battery
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 84
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 230000005855 radiation Effects 0.000 title claims description 4
- 238000001816 cooling Methods 0.000 claims abstract description 71
- 230000017525 heat dissipation Effects 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 239000000110 cooling liquid Substances 0.000 claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims description 9
- 210000004907 gland Anatomy 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 2
- 150000002641 lithium Chemical class 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012536 packaging technology Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Secondary Cells (AREA)
Abstract
The utility model discloses a heat dissipation structure of a lithium battery, which relates to the technical field of lithium batteries and comprises a box body and a box cover hinged on the box body, wherein a heat dissipation mechanism is arranged on the box body and comprises a heat dissipation unit and an auxiliary protection mechanism for protecting the lithium battery; the heat dissipation unit comprises a plurality of heat dissipation parts, the heat dissipation parts comprise two symmetrically distributed cooling pipes, cooling liquid is filled in the cooling pipes, the bottoms of the cooling pipes are curved, small U-shaped rods are fixedly connected to the cooling pipes, and large U-shaped rods are fixedly connected between each two heat dissipation parts. The utility model discloses can be convenient for the coolant liquid more abundant carry out the heat exchange with the air to reach and carry out abundant circulative cooling to the lithium cell, thereby carry out heat dissipation protection to the lithium cell, can have a buffer space simultaneously when the lithium cell shakes, thereby carry out a buffering shock attenuation protection to the lithium cell.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a heat dissipation structure of a lithium battery.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses nonaqueous electrolyte solution, and because the chemical characteristics of the lithium metal are very active, the processing, the storage, the use and the environmental requirements of the lithium metal are very high, the lithium battery can be roughly divided into two types, namely a lithium metal battery and a lithium ion battery, the lithium ion battery does not contain metallic lithium and can be charged, and in the use process of the lithium battery, a heat dissipation structure is often needed to dissipate heat of the lithium battery so as to prolong the service life of the lithium battery.
For example, a heat dissipation structure of a lithium battery proposed by publication number CN214706036U comprises a housing, an inner frame, a base, a positive electrode, a negative electrode, an upper cover and a carbon fiber heat dissipation plate; the shell is provided with a containing cavity and a radiating cavity, and the top of the shell is provided with an opening exposing the containing cavity; the inner frame is arranged in the accommodating cavity from the opening, and the carbon fiber heat dissipation plate is propped against the outer side surface of the inner frame; the base is arranged in the inner frame, the anode and the cathode are embedded in the base and extend upwards and downwards to expose the top and the bottom of the base; the upper cover is buckled on the shell and covers the opening.
According to the traditional lithium battery cell structure in the scheme, the heat dissipation effect can be improved, and the use reliability and safety of the lithium battery cell are further improved; secondly, install upper cover lock in the shell, compare in traditional lithium cell battery cell's packaging technology, can make the whole packaging technology of lithium cell battery cell simpler, be favorable to promoting the packaging efficiency of lithium cell battery cell. However, the applicant finds that when the lithium battery works for a long time, the temperature of the lithium battery is too high, and the lithium battery dissipates heat by the carbon fiber heat dissipation plate and the heat dissipation fins, so that a good heat dissipation effect cannot be obtained.
Disclosure of Invention
In view of the above problems, the present utility model provides a heat dissipation structure for a lithium battery.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the heat dissipation structure of the lithium battery comprises a box body and a box cover hinged on the box body, wherein a heat dissipation mechanism is arranged on the box body and comprises a heat dissipation unit and an auxiliary protection mechanism for protecting the lithium battery;
the cooling unit comprises a plurality of cooling pieces, each cooling piece comprises two symmetrically distributed cooling pipes, cooling liquid is filled in each cooling pipe, the bottoms of the cooling pipes are curved, small U-shaped rods are fixedly connected to each cooling pipe, large U-shaped rods are fixedly connected between the cooling pieces, and accordingly the cooling pipes are communicated under the cooperation of the small U-shaped rods and the large U-shaped rods, a plurality of cooling fins are fixedly connected between the cooling pipes, and circulating units for recycling the cooling liquid are further arranged on the cooling pieces.
Preferably, the circulation unit includes the circulating pump of fixed mounting on the box, the top fixedly connected with cooling shell of circulating pump, be provided with two symmetrical distribution's semiconductor refrigeration piece on the cooling shell, wherein semiconductor refrigeration piece cold junction is located in the cooling shell, the fixed feed liquor pipe that has cup jointed in top of cooling shell, the other end of feed liquor pipe with one of them little U type pole fixed connection, the feed liquor hole has been seted up to the bottom of cooling shell, the feed liquor hole with the feed liquor mouth of circulating pump is linked together, the drain terminal fixedly connected with back flow of circulating pump, the other end of back flow with cooling tube fixed connection.
Preferably, the auxiliary protection mechanism comprises a plurality of battery seats fixedly mounted on the inner wall of the bottom of the box body, two symmetrically distributed protection plates are fixedly connected to the battery seats, a battery gland is fixedly connected to the battery seats, a plurality of grooves are formed in the battery gland, and a plurality of heat dissipation holes are formed in the grooves.
Preferably, both ends of the cooling pipe are outwardly curved.
Preferably, one end of the shielding plate is formed to be bent inward such that a bent cavity is formed in the shielding plate.
Preferably, the lithium battery is placed on the cooling pipe, the lithium battery is fixed through the battery gland, and the bottom of the lithium battery is abutted with the cooling fin.
In summary, the utility model has the technical effects and advantages that:
1. the utility model has reasonable structure, the bottom of the cooling pipe is in a bent shape, and the contact area between the cooling pipe and the lithium battery can be increased, so that the flowing path of the cooling liquid is prolonged, and the cooling liquid can exchange heat with air more and more fully, thereby achieving the effect of cooling the lithium battery fully.
2. According to the utility model, the cooled liquid flows into the cooling pipe again under the action of the return pipe through the circulating pump, so that the heat emitted by the lithium battery is taken away again, and the heat dissipation protection of the lithium battery is realized.
3. According to the utility model, under the action of the grooves, the contact area between the battery gland and the battery is reduced, and under the action of the radiating holes, heat can exchange with air, and the auxiliary radiating mechanism performs radiating protection on the lithium battery.
4. According to the utility model, the lithium battery is abutted against the bending side of the protection plate, so that an auxiliary limiting effect is carried out on the lithium battery, meanwhile, the contact area between the protection plate and the lithium battery can be reduced, thereby being more beneficial to heat dissipation of the lithium battery, and meanwhile, under the action of the bending cavity, a deformation space exists in the protection plate, so that the lithium battery can have a buffer space when vibrating, and therefore, the lithium battery is subjected to buffer shock absorption protection.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a heat dissipation structure of a lithium battery.
Fig. 2 is a schematic structural diagram of a heat dissipation mechanism.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
Fig. 4 is a schematic diagram of a heat dissipating unit.
Fig. 5 is a schematic view of a heat sink.
Fig. 6 is a schematic structural view of the auxiliary protection mechanism.
In the figure: 1. a case; 2. a case cover; 3. a lithium battery; 4. a battery gland; 401. a heat radiation hole; 402. a groove; 5. a battery holder; 6. a protection plate; 7. a small U-shaped rod; 8. a return pipe; 9. a circulation pump; 10. a cooling tube; 11. a large U-shaped rod; 12. a liquid inlet pipe; 13. cooling the housing; 14. a semiconductor refrigeration sheet; 15. a heat sink.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples: referring to fig. 1-6, a lithium battery heat dissipation structure comprises a box body 1, a box cover 2 rotatably connected to the box body 1, and a heat dissipation mechanism arranged on the box body 1, wherein the heat dissipation mechanism comprises a heat dissipation unit and an auxiliary protection mechanism for protecting a lithium battery 3.
In this embodiment, as shown in fig. 2, 4 and 5, the heat dissipation unit is composed of a plurality of heat dissipation members, each heat dissipation member comprises two symmetrically distributed cooling pipes 10, the lithium battery 3 is placed on each cooling pipe 10, the cooling pipes 10 are filled with cooling liquid, in this embodiment, the cooling liquid is water, but the cooling liquid is not limited to water, the bottom of each cooling pipe 10 is curved, so that the contact area with the lithium battery 3 can be increased, the flowing path of the cooling liquid is prolonged, and the cooling liquid can exchange heat with air more and more sufficiently, thereby achieving the effect of cooling the lithium battery 3 most sufficiently.
Fixedly connected with little U type pole 7 on the cooling tube 10, fixedly connected with big U type pole 11 between every radiating member to under the cooperation of little U type pole 7 and big U type pole 11, make cooling tube 10 be linked together, fixedly connected with a plurality of fin 15 between the cooling tube 10, under the effect of fin 15, make the heat can fully with the air contact, wherein still be provided with the circulation unit that is used for carrying out cyclic utilization to the coolant liquid on the radiating member.
In this embodiment, as shown in fig. 2 and fig. 3, the circulation unit includes a circulation pump 9 fixedly installed on the box 1, the top of the circulation pump 9 is fixedly connected with a cooling shell 13, two symmetrically distributed semiconductor refrigeration sheets 14 are disposed on the cooling shell 13, the cold ends of the semiconductor refrigeration sheets 14 are located in the cooling shell 13, the top of the cooling shell 13 is fixedly sleeved with a liquid inlet pipe 12, the other end of the liquid inlet pipe 12 is fixedly connected with one of the small U-shaped rods 7, the bottom of the cooling shell 13 is provided with a liquid inlet hole, the liquid inlet hole is communicated with a liquid inlet of the circulation pump 9, a liquid outlet end of the circulation pump 9 is fixedly connected with a return pipe 8, and the other end of the return pipe 8 is fixedly connected with the cooling pipe 10.
When the lithium battery 3 is subjected to heat dissipation protection, the circulating pump 9 is started, the semiconductor refrigerating sheet 14 is enabled to start refrigerating, the circulating pump 9 is started, liquid in the cooling pipe 10 enters the circulating pump 9 through the liquid inlet pipe 12 under the action of the small U-shaped rod 7, the cooling liquid absorbing the heat emitted by the lithium battery 3 is cooled under the action of the semiconductor refrigerating sheet 14, the cooled liquid flows into the cooling pipe 10 again under the action of the return pipe 8 through the circulating pump 9, and the heat emitted by the lithium battery 3 is taken away again, so that the lithium battery 3 is subjected to heat dissipation protection.
In this embodiment, as shown in fig. 2 and 6, the auxiliary protection mechanism includes a plurality of battery holders 5 fixedly installed on the inner wall of the bottom of the case 1, two symmetrically distributed protection plates 6 are fixedly connected to the battery holders 5, a battery pressing cover 4 is fixedly connected to the battery holders 5, a plurality of grooves 402 are formed in the battery pressing cover 4, and a plurality of heat dissipation holes 401 are formed in the grooves 402. Under the effect of recess 402, reduce battery gland 4 and lithium cell 3's area of contact for the heat can carry out the heat exchange with the air under the effect of louvre 401, supplementary radiating element carries out the heat dissipation protection to lithium cell 3.
In this embodiment, as shown in fig. 1, 2, 4 and 5, the two ends of the cooling tube 10 are curved outwards, which has the advantage of facilitating the placement of the lithium battery 3 by an operator and preventing the lithium battery 3 from being damaged by a sudden touch of the port of the cooling tube 10.
In this embodiment, as shown in fig. 2 and 6, one end of the protection plate 6 is curved inwards, so that a curved cavity is formed by the protection plate 6, in this embodiment, the protection plate 6 is made of elastic steel, and the advantage of the arrangement is that the protection plate plays a guiding role when the lithium battery 3 is placed, after the lithium battery 3 is placed, the lithium battery 3 is abutted against the curved side of the protection plate 6, so that an auxiliary limiting effect is performed on the lithium battery 3, and meanwhile, the contact area between the protection plate 6 and the lithium battery 3 can be reduced, so that heat dissipation of the lithium battery 3 is more facilitated, and meanwhile, under the action of the curved cavity, a deformation space exists in the protection plate 6, so that the lithium battery 3 can vibrate, and a buffer space is available for buffering and damping protection on the lithium battery 3.
In this embodiment, as shown in fig. 1 and 2, the battery cover 4 is used to fix the lithium battery 3, and the bottom of the lithium battery 3 abuts against the heat sink 15, so that the heat at the bottom of the lithium battery 3 can be dissipated into the air through the heat sink 15.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. The utility model provides a lithium cell heat radiation structure, includes box (1), articulates case lid (2) on box (1), its characterized in that: the lithium battery box comprises a box body (1), wherein a heat dissipation mechanism is arranged on the box body (1), and comprises a heat dissipation unit and an auxiliary protection mechanism for protecting the lithium battery (3);
the cooling unit comprises a plurality of cooling pieces, each cooling piece comprises two symmetrically distributed cooling pipes (10), cooling liquid is filled in each cooling pipe (10), the bottoms of the cooling pipes (10) are curved, small U-shaped rods (7) are fixedly connected to each cooling pipe (10), large U-shaped rods (11) are fixedly connected between the cooling pieces, and accordingly the cooling pipes (10) are communicated under the cooperation of the small U-shaped rods (7) and the large U-shaped rods (11), a plurality of cooling fins (15) are fixedly connected between the cooling pipes (10), and circulating units for recycling the cooling liquid are further arranged on the cooling pieces.
2. The lithium battery heat dissipation structure as defined in claim 1, wherein: the circulating unit comprises a circulating pump (9) fixedly installed on a box body (1), a cooling shell (13) is fixedly connected to the top of the circulating pump (9), two symmetrically distributed semiconductor refrigerating sheets (14) are arranged on the cooling shell (13), the cold ends of the semiconductor refrigerating sheets (14) are located in the cooling shell (13), a liquid inlet pipe (12) is fixedly sleeved at the top of the cooling shell (13), the other end of the liquid inlet pipe (12) is fixedly connected with one of the small U-shaped rods (7), a liquid inlet hole is formed in the bottom of the cooling shell (13), the liquid inlet hole is communicated with a liquid inlet of the circulating pump (9), a backflow pipe (8) is fixedly connected to the liquid outlet end of the circulating pump (9), and the other end of the backflow pipe (8) is fixedly connected with the cooling pipe (10).
3. The lithium battery heat dissipation structure as defined in claim 1, wherein: the auxiliary protection mechanism comprises a plurality of battery holders (5) fixedly mounted on the inner wall of the bottom of the box body (1), two symmetrically distributed protection plates (6) are fixedly connected to the battery holders (5), a battery pressing cover (4) is fixedly connected to the battery holders (5), a plurality of grooves (402) are formed in the battery pressing cover (4), and a plurality of radiating holes (401) are formed in the grooves (402).
4. The lithium battery heat dissipation structure as defined in claim 1, wherein: both ends of the cooling pipe (10) are outwardly curved.
5. A lithium battery heat dissipation structure as defined in claim 3, wherein: one end of the protection plate (6) is in an inward bending shape, so that a bending cavity is formed in the protection plate (6).
6. A lithium battery heat dissipation structure as defined in claim 3, wherein: the lithium battery (3) is placed on the cooling pipe (10), the lithium battery (3) is fixed through the battery gland (4), and the bottom of the lithium battery (3) is abutted with the cooling fin (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321260853.XU CN219832853U (en) | 2023-05-23 | 2023-05-23 | Lithium battery heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321260853.XU CN219832853U (en) | 2023-05-23 | 2023-05-23 | Lithium battery heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219832853U true CN219832853U (en) | 2023-10-13 |
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ID=88244615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321260853.XU Active CN219832853U (en) | 2023-05-23 | 2023-05-23 | Lithium battery heat radiation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219832853U (en) |
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2023
- 2023-05-23 CN CN202321260853.XU patent/CN219832853U/en active Active
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