CN114267902A - Battery pack with air duct structure and air cooling method - Google Patents
Battery pack with air duct structure and air cooling method Download PDFInfo
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- CN114267902A CN114267902A CN202111561728.8A CN202111561728A CN114267902A CN 114267902 A CN114267902 A CN 114267902A CN 202111561728 A CN202111561728 A CN 202111561728A CN 114267902 A CN114267902 A CN 114267902A
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- battery
- control element
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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
Abstract
The invention provides a battery pack with an air duct structure and an air cooling method, wherein the battery pack with the air duct structure comprises a box body and battery modules arranged in the box body, first air control elements are arranged on opposite side walls of the box body, at least one second air control element is arranged between every two adjacent battery modules, and ventilation openings are formed in the first air control elements and the second air control elements; air enters the box body through the first air control element on one side, flows through the heat dissipation element and the second air control element, and is discharged out of the box body through the first air control element on the other side. According to the invention, the air channel is optimized by arranging the first air control element, the heat dissipation element and the second air control element, a fan is not required to be installed on the battery pack, the multi-air-channel effect is achieved, and the solar battery pack has the characteristics of simple structure, full utilization of space, good heat dissipation effect and the like.
Description
Technical Field
The invention belongs to the technical field of batteries, and relates to a battery pack with an air duct structure and an air cooling method.
Background
At present, the new energy field is gradually developed, and more container energy storage technologies are widely applied to various fields. Market competition is more fierce, and the capacity is bigger, and voltage is higher, and the bigger container of electric current begins to appear, and the battery package is wherein indispensable part, and the rise of electric current leads to the battery package the heat that produces at the during operation bigger, and traditional natural heat dissipation mode has not reached the requirement to air-cooled and liquid cooling have been introduced. In the traditional air cooling, each battery pack is provided with a fan to blow air and suck air on the front panel. Traditional liquid cooling radiating mode adopts and increases liquid cooling board bottom the battery module, the mode of leading to the coolant liquid in the liquid cooling board cools off the battery module, the better heat conduction silica gel pad of heat conduction effect has been pasted between module and the liquid cooling board, the heat dissipation cooling work of battery package can be accomplished to the mode that uses the liquid cooling, but the structure of liquid cooling system is complicated, manufacturing cost and use cost are all on the high side, more importantly, in case the circulation coolant liquid in the battery box takes place to reveal will probably arouse serious incident with the electrified part contact among the battery system extremely, and simultaneously, the liquid cooling board is placed in battery module below, the heat dissipation is inhomogeneous, the local difference in temperature is great, the radiating effect is relatively poor.
The existing battery pack has a complex structure and a large heat dissipation structure space, and needs a fan for air supply, so how to provide a battery pack with a small heat dissipation structure, fully utilized space and low cost becomes a problem which needs to be solved urgently at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a battery pack with an air duct structure and an air cooling method.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a battery pack with an air duct structure, which comprises a box body and a battery module arranged in the box body, wherein opposite side walls of the box body are provided with first air control elements, and the first air control elements are provided with first ventilation parts; air enters the box body through the first air control element on one side, flows through the battery module and is exhausted out of the box body through the first air control element on the other side.
As a preferred technical solution of the present invention, the battery pack with the air duct structure includes at least two rows of the battery modules, at least one second air control element is disposed between adjacent battery modules, a second air vent portion is disposed on the second air control element, and air flows through the battery modules through the second air control element.
As a preferable technical solution of the present invention, the first wind control element includes at least two first ventilation parts, the first ventilation parts are provided with ventilation openings, the first ventilation parts are arranged along an arrangement direction of battery cells of each row of the battery modules, and ventilation areas of the first ventilation parts are changed.
Preferably, the ventilation area of each of the first ventilation parts is sequentially reduced.
As a preferable technical solution of the present invention, the second air control element includes at least two second ventilation parts, the second ventilation parts are provided with ventilation openings, the second ventilation parts are arranged along the arrangement direction of the battery cells of each row of the battery modules, and the ventilation areas of the second ventilation parts are changed.
Preferably, the ventilation area of each of the second ventilation parts is sequentially reduced.
As a preferable aspect of the present invention, the ventilation area is reduced by reducing the vertical dimension of the ventilation opening of the first ventilation portion and/or the ventilation opening of the second ventilation portion, the ventilation area is reduced by reducing the lateral dimension of the ventilation opening of the first ventilation portion and/or the ventilation opening of the second ventilation portion, or the ventilation area is reduced by reducing the number of the ventilation openings of the first ventilation portion and/or the ventilation openings of the second ventilation portion.
As a preferable technical solution of the present invention, the first wind control element is a part of a side wall of the box body, or the side wall of the box body includes a ventilation frame body having an opening, and the first wind control element is detachably disposed on the ventilation frame body.
Preferably, the ventilation frame body comprises an integrally formed or separated frame which is sunken towards the interior of the box body, and the frame is attached to the edge of the first wind control element.
As a preferred technical solution of the present invention, the battery module includes at least two battery cells arranged in sequence, a heat dissipation element is disposed between adjacent battery cells, and a position of the vent is at least partially overlapped with a position of the heat dissipation element.
Preferably, the battery module includes two end plates, be used for placing between the end plate electric core, all set up between end plate and the adjacent electric core radiating element.
Preferably, the heat dissipation element is a hollow structure, and air flows through the hollow structure to take away heat on the surface of the battery core.
As a preferred technical solution of the present invention, the box body includes an upper cover, a control panel and a bottom plate, the upper cover includes a cover plate and the opposite side walls, the cover plate has an upper surface covering the battery module and a side surface opposite to the control panel, the bottom plate and the upper cover are mutually spliced to form the box body, and the battery module is electrically connected to the control panel.
In a second aspect, the present invention provides a method for cooling a battery pack having an air duct structure according to the first aspect, where the method includes:
the air gets into the box by the first ventilation portion of the first accuse wind component of one side, and the air flow is through the battery module and is taken the heat out the back, is discharged by the first ventilation portion of the first accuse wind component of opposite side, dispels the heat to the battery module.
As a preferred technical solution of the present invention, the air cooling method specifically includes the steps of:
air enters the battery pack from the first air control element on one side, is blown into the heat dissipation element of the battery module, contacts with the battery core to transfer heat, carries heat out of the heat dissipation element, then enters the heat dissipation element of the next battery module through the second air control element, and is discharged into the external air duct through the first air control element on the other side to finish heat dissipation.
It should be noted that the external air duct of the battery pack of the present invention may be a ventilation duct of the battery rack, and finally, the hot air is discharged by a fan disposed on the ventilation duct to complete the heat dissipation process.
According to the invention, the ventilation frame body is deformed to form an inwards-concave frame and the first air control element is arranged in a sealing manner, the first air control element can be detachably arranged, and in the installation state, the first air control element can be partially deformed to achieve a good sealing effect and avoid air leakage caused by a gap by being provided with a certain deformation amount, or the inwards-concave frame can be detachably assembled with the ventilation frame body or the first air control element to achieve the sealing purpose.
In addition, through the removable setting of accuse wind component, can be through changing the accuse wind component of different draught areas to adjust the amount of wind.
In the present invention, the control panel is a collective wiring board for controlling charging and discharging of the battery modules.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the second air control element is combined with the first air control element and the heat dissipation element, so that the air duct structure is effectively optimized, a multi-air-duct effect is achieved, an air duct or a cold guide pipe between the battery modules in the traditional air cooling structure is replaced, and the volume of the battery pack is reduced. Furthermore, the air quantity is controlled by adjusting the area of the vent in the air control element, and meanwhile, the area of the vent adopts a gradual change form, so that the air quantity of each air port is different, the heat dissipation effect of each electric core is kept consistent, the problem of uneven heat dissipation of the electric cores around the battery box is solved, the overall temperature of the module is balanced, the temperature difference between the electric cores is reduced, and the air control device has the characteristics of simple structure, low cost, good heat dissipation effect, small size and the like, and effectively prolongs the service life of the battery pack.
Drawings
Fig. 1 is a schematic external view of a battery pack according to an embodiment of the present invention;
fig. 2 is an exploded view of a battery pack according to an embodiment of the present invention;
FIG. 3 is a schematic view of an installation structure of an upper cover according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a battery module according to an embodiment of the present invention;
fig. 5 is a schematic transverse cross-sectional view of a battery pack provided in an embodiment of the present invention;
FIG. 6 is a schematic structural view of a first wind-control element with variable vent length according to an embodiment of the present invention, wherein the shaded area represents a vent disposed in a first vent portion;
FIG. 7 is a schematic structural view of a first variable vent width wind control element according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a first wind-control element with a variable number of wind holes according to an embodiment of the present invention;
fig. 9 is a schematic view of a split structure of the first wind-controlling element and the sidewall according to an embodiment of the present invention.
Wherein, 1-upper cover; 101-a cover plate; 102-a side wall; 2-a battery module; 201-end plate; 202-a first cell; 203-heat dissipating elements; 204-a second cell; 3-a first wind control element; 301-a first vent; 4-a second wind control element; 5-a bottom plate; 6-control panel.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In one embodiment, the present invention provides a battery pack, as shown in fig. 1, 2 and 4, the battery pack with an air duct structure includes a case and a battery module 2 disposed in the case; as shown in fig. 1 to 3, the box body includes an upper cover 1, the upper cover 1 includes a cover plate 101 and two side walls 102 disposed opposite to each other, and the cover plate 101 has an upper surface covering the battery module 2 and a side surface opposite to the control panel 6. The opposite side walls 102 of the box body are provided with first air control elements 3, the first air control elements 32 are provided with first ventilation parts 301, air enters the box body from the first air control elements 3 on one side and is discharged out of the box body from the first air control elements 3 on the other side.
Further, the battery modules 2 are double rows or multiple rows, at least one second air control element 4 is arranged between the adjacent battery modules 2, each second air control element 4 comprises a second air vent part, the second air control elements 4 are utilized and combined with the first air control elements 3, the air duct structure is effectively optimized, the multi-air duct effect is achieved, an air duct or a cold guide pipe in the traditional air cooling structure is replaced, and the size of the battery pack is greatly reduced.
Further, as shown in fig. 6, the first wind control element 3 includes at least two first ventilation portions 301, the first ventilation portions 301 are sequentially disposed along a length direction of the first wind control element 3, that is, along a cell arrangement direction, and the first ventilation portions 301 are provided with at least one ventilation opening, for example, the shape of the ventilation opening may be rectangular.
Further, the ventilation area of the first ventilation part 301 may be changed, for example, to be sequentially decreased, as shown in fig. 6, by decreasing the vertical size of the ventilation openings of the first ventilation part 301 to decrease the ventilation area, or, as shown in fig. 7, by decreasing the lateral size of the ventilation openings of the first ventilation part 301 to decrease the ventilation area, or, as shown in fig. 8, by decreasing the number of the ventilation openings of the first ventilation part 301 to decrease the ventilation area, or, as shown in fig. 8, by decreasing the sectional area of the ventilation openings of the first ventilation part 301 to decrease the ventilation area (not shown).
Further, the structure of the first wind control element 3 and the structure of the second wind control element 4 may be the same, or may be different in terms of material, ventilation portion size, number, shape, and the like.
Through the area of ventilating of the first portion of ventilating 301 of the first accuse wind component 3 of control and the second portion of ventilating of second accuse wind component 4 to can control and adjust the amount of wind, make the module bulk temperature balanced, reduce the difference in temperature between the electric core, have simple structure, with low costs, characteristics such as the radiating effect is good and small, effectively improve the life of battery package.
Illustratively, the battery module 2 includes at least two cells, such as a first cell 202 and a second cell 204 shown in fig. 4; a heat dissipation element 203 is disposed between the first cell 202 and the second cell 204. Specifically, the heat dissipation element 203 is a hollow structure, and air flows through the hollow structure to take away heat from the battery cell.
Further, the battery module 2 further includes an end plate 201, and a heat dissipation element 203 may also be disposed between the end plate 201 and the adjacent electric core.
Further, the position of the ventilation portion at least partially overlaps with the position of the heat dissipation element 203, or may completely correspond to the position of the heat dissipation element, so as to improve the heat dissipation effect.
For example, the first wind control element 3 may be integrally formed with or separately connected to the side wall 1021022, for example, as shown in fig. 2 and 9, the side wall 102 is a ventilation frame with an opening, and the first wind control element 3 is detachably disposed on the ventilation frame.
The ventilation framework takes place deformation and forms inside sunken frame and first accuse wind component 3 sealed, and first accuse wind component 3 can dismantle the setting moreover, under the installation, first accuse wind component 3 has certain deformation volume, can laminate through partial deformation and the inside sunken frame of ventilation framework, reach good sealed effect, avoid the breach to cause the problem of leaking out, in addition, can dismantle the setting through accuse wind component, can be through the accuse wind component of changing different draught areas, thereby adjust the amount of wind.
Specifically, the box body further comprises a bottom plate 5 and a control panel 6, and the control panel 6, the bottom plate 5 and the upper cover 1 are mutually spliced to form the box body. Wherein, battery module 2 and control panel 6 electric connection, control panel 6 is the wiring board that gathers that controls battery module 2 charge-discharge.
Exemplarily, the invention further provides an air cooling method of the battery pack, which includes the following steps:
as shown in fig. 5, air enters the battery pack from the first air control element 3 on one side, and blows into the heat dissipation element 203 of the battery module 2, and the air exhausts heat from the heat dissipation element 203, then enters the heat dissipation element 203 of the next battery module 2 through the second air control element 4, and exhausts into the external air duct through the first air control element 3 on the other side. The external air duct can be a ventilating duct of the battery rack, and hot air is exhausted through a fan arranged on the ventilating duct to finish a heat dissipation process.
Optionally, the first ventilation part 301 and/or the second ventilation part with a small ventilation area are close to the external air duct, so that the heat dissipation effect is further improved.
According to a specific embodiment, the second air control element 4 is combined with the first air control element 3 and the heat dissipation element 203, so that an air duct structure is effectively optimized, a multi-air-duct effect is achieved, an air duct or a cold guide pipe reserved between the battery modules 2 in a traditional air cooling structure is replaced, and the size of the battery pack is reduced. Furthermore, the air quantity is controlled through the area of the ventilation opening in the air control element, so that the overall temperature of the module is balanced, the temperature difference between the battery cores is reduced, and the battery pack has the characteristics of simple structure, low cost, good heat dissipation effect, small size and the like, and effectively prolongs the service life of the battery pack.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. A battery pack with an air duct structure comprises a box body and a battery module arranged in the box body, and is characterized in that first air control elements are arranged on opposite side walls of the box body, and a first ventilation part is arranged on each first air control element; air enters the box body through the first air control element on one side, flows through the battery module and is exhausted out of the box body through the first air control element on the other side.
2. The battery pack according to claim 1, wherein the battery pack comprises at least two rows of the battery modules, at least one second air control element is arranged between the adjacent battery modules, a second air vent part is arranged on the second air control element, and air flows through the battery modules through the second air control element.
3. The battery pack according to claim 1, wherein the first wind control element includes at least two first ventilation portions, the first ventilation portions are provided with ventilation openings, the first ventilation portions are arranged along a cell arrangement direction of each row of battery modules, ventilation areas of the first ventilation portions are changed, and the ventilation areas of the first ventilation portions are sequentially reduced.
4. The battery pack according to claim 2, wherein the second air control element includes at least two second ventilation portions, each second ventilation portion is provided with a ventilation opening, the second ventilation portions are arranged along the cell arrangement direction of each row of battery modules, the ventilation area of each second ventilation portion changes, and the ventilation area of each second ventilation portion decreases sequentially.
5. The battery pack according to claim 2, wherein the ventilation area is reduced by reducing a vertical dimension of the vent of the first ventilation portion and/or the vent of the second ventilation portion, the ventilation area is reduced by reducing a lateral dimension of the vent of the first ventilation portion and/or the vent of the second ventilation portion, or the ventilation area is reduced by reducing the number of the vents of the first ventilation portion and/or the vent of the second ventilation portion.
6. The battery pack of claim 1, wherein the first wind control element is a portion of a side wall of the case, or the side wall of the case includes a ventilation frame having an opening, and the first wind control element is detachably disposed on the ventilation frame;
the ventilation frame body comprises an integrally formed or split frame which is sunken towards the interior of the box body, and the frame is connected with the edge of the first wind control element in an attaching mode.
7. The battery pack according to claim 1, wherein the battery module comprises at least two battery cells arranged in sequence, a heat dissipation element is arranged between the adjacent battery cells, and the position of the vent at least partially overlaps with the position of the heat dissipation element;
the battery module comprises two end plates, the end plates are used for placing the battery cores, the heat dissipation elements are arranged between the end plates and the adjacent battery cores, the heat dissipation elements are of hollow structures, and air flows through the hollow structures to take away heat on the surfaces of the battery cores.
8. The battery pack according to claim 1, wherein the case includes an upper cover, a control panel, and a bottom plate, the upper cover includes a cover plate and the opposite side walls, the cover plate has an upper surface covering the battery modules and a side surface opposite to the control panel, the bottom plate, and the upper cover are assembled with each other to form the case, and the battery modules are electrically connected to the control panel.
9. The air cooling method for the battery pack with the air duct structure according to any one of claims 1 to 8, wherein the air cooling method comprises the following steps:
the air gets into the box by the first ventilation portion of the first accuse wind component of one side, and the air flow is through the battery module and is taken the heat out the back, is discharged by the first ventilation portion of the first accuse wind component of opposite side, dispels the heat to the battery module.
10. The air cooling method according to claim 9, wherein the air cooling method specifically comprises the steps of:
air enters the battery pack from the first air control element on one side, is blown into the heat dissipation element of the battery module, contacts with the battery core to transfer heat, carries heat out of the heat dissipation element, then enters the heat dissipation element of the next battery module through the second air control element, and is discharged into the external air duct through the first air control element on the other side to finish heat dissipation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111561728.8A CN114267902A (en) | 2021-12-20 | 2021-12-20 | Battery pack with air duct structure and air cooling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111561728.8A CN114267902A (en) | 2021-12-20 | 2021-12-20 | Battery pack with air duct structure and air cooling method |
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| Publication Number | Publication Date |
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| CN114267902A true CN114267902A (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111561728.8A Pending CN114267902A (en) | 2021-12-20 | 2021-12-20 | Battery pack with air duct structure and air cooling method |
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| CN213124548U (en) * | 2020-05-28 | 2021-05-04 | 苏州正力新能源科技有限公司 | Air-cooled battery module that can dismantle completely |
| CN112952264A (en) * | 2021-01-28 | 2021-06-11 | 深圳博海荣川实业有限公司 | Air-cooled lithium battery pack supporting continuous 3C discharge |
| CN214583984U (en) * | 2021-03-29 | 2021-11-02 | 广州智光储能科技有限公司 | Simple and easy battery module wind channel testing arrangement |
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2021
- 2021-12-20 CN CN202111561728.8A patent/CN114267902A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110767860A (en) * | 2019-11-19 | 2020-02-07 | 郑州正方科技有限公司 | Battery box with heat dissipation structure |
| CN110911779A (en) * | 2019-12-03 | 2020-03-24 | 西安电子科技大学芜湖研究院 | Lithium battery pack mixing heat dissipation device |
| CN211480235U (en) * | 2020-01-02 | 2020-09-11 | 阳光电源股份有限公司 | Battery pack |
| CN111370614A (en) * | 2020-03-20 | 2020-07-03 | 深圳市雄韬锂电有限公司 | Battery box with multilayer heat radiation structure |
| WO2021184759A1 (en) * | 2020-03-20 | 2021-09-23 | 深圳市雄韬锂电有限公司 | Battery housing having multilayered heat-dissipating structure |
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| CN212874584U (en) * | 2020-07-29 | 2021-04-02 | 湖北亿纬动力有限公司 | Energy storage battery box and energy storage system |
| CN112952264A (en) * | 2021-01-28 | 2021-06-11 | 深圳博海荣川实业有限公司 | Air-cooled lithium battery pack supporting continuous 3C discharge |
| CN214583984U (en) * | 2021-03-29 | 2021-11-02 | 广州智光储能科技有限公司 | Simple and easy battery module wind channel testing arrangement |
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