CN112103594A - Immersed liquid-cooled battery pack - Google Patents
Immersed liquid-cooled battery pack Download PDFInfo
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- CN112103594A CN112103594A CN202011035446.XA CN202011035446A CN112103594A CN 112103594 A CN112103594 A CN 112103594A CN 202011035446 A CN202011035446 A CN 202011035446A CN 112103594 A CN112103594 A CN 112103594A
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- 239000007788 liquid Substances 0.000 claims abstract description 122
- 239000000110 cooling liquid Substances 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 abstract description 28
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000007654 immersion Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses an immersed liquid-cooled battery pack. The immersed liquid-cooled battery pack includes: the battery pack comprises a shell, wherein at least one group of battery packs are arranged in the shell, and each battery pack comprises a plurality of battery cells arranged at intervals along a first direction; a liquid inlet cavity and a liquid outlet cavity are respectively arranged on two sides of the battery pack along a second direction, and the second direction is vertical to the first direction; a liquid inlet is formed in one of two ends of the liquid inlet cavity along the first direction, and a liquid outlet is formed in one end of the liquid outlet cavity along the first direction, which is different from the liquid inlet, so that cooling liquid enters the liquid inlet cavity from the liquid inlet, flows into the liquid outlet cavity after flowing through the battery pack and flows out of the liquid outlet; the flow equalizing plate is arranged between the liquid inlet cavity and the battery pack and is arranged along the first direction, the flow equalizing plate is provided with a liquid through hole, and the liquid through hole is provided with a plurality of flow deflectors which are arranged at intervals along the second direction. The invention provides an immersion type liquid cooling battery pack which is high in heating/cooling efficiency, good in uniformity and simple in structure.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to an immersed liquid-cooled battery pack.
Background
In recent years, with the rapid growth of the new energy automobile market, technologies related to electric automobiles are rapidly developed. The power battery is one of the core components of the electric automobile, and the performance of the power battery is directly related to the working condition of the automobile.
When the battery works, the interior of the battery provides electric energy through violent chemical reaction, a large amount of heat can be generated in the charging and discharging process, the temperature of the battery is increased, the safety, the charging and discharging capacity, the efficiency, the cycle life and other performances of the battery can be directly influenced by the temperature of the battery, and the working performance of the whole vehicle is further influenced. The optimal working temperature range of the battery is narrow, generally between 15 ℃ and 45 ℃, and if the optimal working temperature range is beyond the range, the basic performance of the battery is obviously reduced, and the service life and the safety of the battery are influenced. In addition, the single batteries are usually grouped to meet the use requirement, so the temperature consistency of the battery pack is also an important guarantee for the batteries to exert normal performance. If the cooling system of battery can not in time, evenly dispel the heat effectively, can cause the temperature distribution inconsistent between the module, can aggravate the internal resistance and the capacity inconsistent of battery like this, bring negative effects to life, have the potential safety hazard when serious.
The battery heat management technology is to effectively dissipate heat when the temperature of the battery is higher so as to prevent thermal runaway accidents, preheat the battery when the temperature of the battery is lower so as to ensure normal operation of the battery at low temperature, ensure the temperature uniformity of the battery and prevent the battery performance in a local high-temperature area from being attenuated too fast so as to reduce the whole service life. With the increasing expectation of the user on the endurance mileage of the electric vehicle, the energy density of the battery pack is also improved, the heat dissipation capacity is increased, and the challenges of the thermal management problem, especially the high-temperature heat dissipation problem of the battery are increased. The natural cooling and air cooling methods have been unable to meet the heat dissipation power requirements, and then the cooling methods are changed into the currently common indirect liquid cooling (including the refrigerant), and the temperature uniformity of the cooling methods is always to be improved due to the structure reason no matter which cooling method is adopted.
The natural cooling is realized by blowing by natural wind, and the device has the advantages of simple structure, low cost, small occupied space and low heat dissipation efficiency and cannot adapt to the high-power discharge working condition. The air cooling system has simple structure and is convenient to maintain, but has low heat dissipation efficiency, poor temperature uniformity and poor dustproof and waterproof effects. The liquid cooling is used and researched most in the industry, the heat exchange between the battery and the cooling liquid is realized by arranging the cooling plate at the bottom of the battery or around the battery, the heat exchange coefficient of a liquid medium is high, the heat capacity is large, the cooling speed is high, the consistency of the temperature field of the battery pack is improved to a certain extent, the structure is relatively complex, the number of internal structural components is large, and the limitation effect on the energy density of the battery pack is realized. In addition, because the contact area between the bottom cooling plate and the battery is limited, the temperature difference of a single battery cell is large, and the performance of the battery is influenced.
Disclosure of Invention
The invention aims to provide an immersed liquid-cooled battery pack to solve the problems of low heating/cooling efficiency, poor uniformity and complex structure of a battery pack cooling device in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
an immersed liquid cooled battery pack comprising:
the battery pack comprises a shell, wherein at least one group of battery packs is arranged in the shell, and each battery pack comprises a plurality of battery cells arranged at intervals along a first direction; a liquid inlet cavity and a liquid outlet cavity are respectively arranged on two sides of the battery pack along a second direction, and the second direction is vertical to the first direction; a liquid inlet is formed in one of two ends of the liquid inlet cavity in the first direction, and a liquid outlet is formed in one end of the liquid outlet cavity in the first direction, which is different from the liquid inlet, so that cooling liquid enters the liquid inlet cavity from the liquid inlet, flows into the liquid outlet cavity after flowing through the battery pack and flows out of the liquid outlet;
the flow equalizing plate is arranged between the liquid inlet cavity and the battery pack and is arranged along the first direction, a liquid through hole is formed in the flow equalizing plate, and a plurality of flow deflectors are arranged in the liquid through hole at intervals along the first direction.
In an optional embodiment of the present invention, the flow deflector includes a first portion located in the liquid inlet cavity, and a second portion located between the flow equalizing plate and the battery pack, the first portion is inclined toward the liquid inlet, and the second portion is parallel to the battery cells.
In an optional embodiment of the present invention, the cross sections of the liquid inlet cavity and the liquid outlet cavity are both wedge-shaped, one end of the liquid inlet cavity, which is provided with the liquid inlet, is larger, and the other end of the liquid outlet cavity, which is provided with the liquid outlet, is smaller in both ends of the liquid outlet cavity along the first direction, and the flow resistance and the flow rate of the flow channel between the battery cells are consistent in the wedge-shaped liquid inlet cavity and the wedge-shaped liquid outlet cavity.
In an optional embodiment of the invention, the battery further includes a bottom bracket disposed at the bottom of the casing, a groove extending along the second direction is disposed on the bottom bracket, and the battery cell is clamped in the groove.
In an optional embodiment of the present invention, the battery further includes a top cross beam disposed at the top of the casing, the top cross beam is disposed along the first direction, and the top cross beam abuts against the top of the battery cell.
In an alternative embodiment of the present invention, the cross section of the top beam is a right-angle shape, so that the top beam can be clamped on a corner of the battery cell.
In an optional embodiment of the present invention, the housing includes a tray and an upper cover covering the tray, the bottom bracket is disposed on the tray, and the top cross member is disposed on the upper cover.
In an optional embodiment of the present invention, in each battery pack, a gap between two adjacent battery cells is 2 to 6 mm.
In an optional embodiment of the present invention, the battery packs are a plurality of sets, and the plurality of sets of battery packs are arranged at intervals along the second direction.
In an alternative embodiment of the present invention, the gap between two adjacent groups of the battery packs is 10 to 22 mm.
The invention has the advantages that: the flow equalizing plate is arranged in the battery pack, the flow equalizing plate is provided with a plurality of flow deflectors at intervals along a first direction, and the flow deflectors can guide cooling liquid into flow channels among the battery cores so as to improve the uniformity of the flow velocity and direction of fluid in each flow channel in the battery pack, prevent flow dead zones and improve the temperature uniformity of the whole battery pack;
the insulating cooling liquid is used for replacing structural members such as an indirect cooling plate, a heat conducting pad, a heat insulating pad, a module shell and the like in the existing liquid cooling structure, the structure is simple and compact, the assembly is simple, and the energy density of the unit volume of the battery pack is improved;
the electric core is in direct contact with the cooling liquid, the heating and cooling efficiency is high, and the single electric core temperature equalization is obviously improved compared with the indirect cooling;
the insulating coolant liquid is full of space around the electric core, and when individual electric core was out of control at the appearance heat, early heat was accumulated temporarily, and the coolant liquid acts as the effect of heat insulating mattress and isolated air, can play the effect of suppression and cooling to the thermal diffusion, reserves more safe time of fleing for the passenger.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of an immersed liquid-cooled battery pack of the present invention;
FIG. 2 is a schematic top view of the interior of an immersed liquid-cooled battery pack of the present invention;
FIG. 3 is a schematic perspective view of the interior of an immersed liquid-cooled battery pack of the present invention;
FIG. 4 is a schematic structural view of an embodiment of a flow equalization plate according to the present invention;
fig. 5 is a schematic structural view of an embodiment of the bottom bracket of the present invention.
In the figure:
1. an upper cover; 2. a tray; 3. a liquid inlet; 4. a liquid outlet; 5. a bottom bracket; 51. a trough body; 52. blocking edges; 6. cooling liquid; 7. a flow equalizing plate; 8. a liquid inlet cavity; 9. a liquid outlet cavity; 10. a top cross beam; 11. an electric core; 12. a first gap; 13. a second gap; 14. and a flow deflector.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 to 4, the immersion type liquid-cooled battery includes a case composed of an upper cover 1 and a tray 2. Referring to fig. 3, in an embodiment of the present invention, the battery packs include three groups, each group includes a plurality of battery cells 11 arranged at intervals along the first direction, and in other embodiments, the number of the battery packs may be increased or decreased as needed, for example, one group, two groups, or four groups or five groups, which is not limited herein. The first direction is the Y direction shown in the drawing, that is, the front-rear direction. The X direction shown in the drawing is defined as a second direction, i.e., a left-right direction, and the Z direction is defined as an up-down direction. It is a matter of course that the X direction, the Y direction and the Z direction are perpendicular to each other. As shown in fig. 3, the battery cells 11 are arranged at intervals in the Y direction, so that first gaps 12 are formed between the battery cells 11, and the first gaps 12 serve as flow passages in the battery pack. In one embodiment, the first gap 12 is 2-6mm, and further, the first gap 12 is 3-5 mm. The multiple groups of battery packs are arranged at intervals along the X direction, a second gap 13 is formed between every two adjacent groups of battery packs, the second gap 13 is 10-22mm, and further the second gap 13 is 13-20 mm.
Referring to fig. 2, a liquid inlet cavity 8 and a liquid outlet cavity 9 are respectively disposed on two sides of the battery pack along the X direction, a liquid inlet 3 is disposed on the liquid inlet cavity 8, and a liquid outlet 4 is disposed on the liquid outlet cavity 9. Specifically, one of the two ends of the liquid inlet cavity 8 along the Y direction is provided with a liquid inlet 3, and the other end of the two ends of the liquid outlet cavity 9 along the Y direction, which is different from the liquid inlet 3, is provided with a liquid outlet 4. In fig. 2, a liquid inlet 3 is disposed at the rear end of the liquid inlet cavity 8, a liquid outlet 4 is disposed at the front end of the liquid outlet cavity 9, and the cooling liquid 6 enters the liquid inlet cavity 8 from the liquid inlet 3, flows into the liquid outlet cavity 9 after flowing through the battery pack from the liquid inlet cavity 8, and flows out from the liquid outlet 4, so that the cooling liquid 6 heats or cools the battery cell 11. Specifically, when the battery pack is at a low ambient temperature and the temperature of the battery cell 11 is low, the battery cell 11 is heated by the cooling liquid 6, so that the temperature of the battery cell 11 is increased to reach an ideal working temperature; when the battery pack is at a high ambient temperature or the battery cell 11 generates heat seriously to cause the temperature of the battery pack to rise, the temperature of the battery cell 11 is high, and then the battery cell 11 is cooled by the cooling liquid 6, so that the temperature of the battery cell 11 is reduced, and an ideal working temperature is reached.
Referring to fig. 2 to 4, the immersed liquid-cooled battery of the present invention further includes a flow equalizing plate 7, as shown in fig. 2, the flow equalizing plate 7 is disposed between the liquid inlet chamber 8 and the battery pack, the flow equalizing plate 7 is disposed along the Y direction, and two ends of the flow equalizing plate 7 are respectively mounted on the side walls of the front and rear ends of the housing. Referring to fig. 4, a liquid through hole is formed in the flow equalizing plate 7 for the cooling liquid 6 to pass through, so that the cooling liquid 6 flows from the liquid inlet cavity 8 to the electric core 11, a plurality of flow deflectors 14 are disposed in the liquid through hole, and the flow deflectors 14 are disposed at intervals along the Y direction. The flow deflectors 14 can guide the cooling liquid 6 into the flow channels among the battery cells 11, so that the uniformity of the flow velocity and direction of the fluid in each flow channel in the battery pack is improved, the occurrence of flow dead zones is prevented, and the temperature uniformity of the whole battery pack is improved. In one embodiment, the flow deflectors 14 may be arranged in a one-to-one correspondence with the flow channels between the battery cells 11, and each flow channel corresponds to one flow deflector 14.
In the invention, an immersion type liquid cooling mode is adopted, so that the battery cell 11 is immersed in the cooling liquid 6, and the insulating cooling liquid 6 is used for replacing the indirect cooling plate, the heat conducting pad, the heat insulating pad, the module shell and other structural members in the existing liquid cooling structure, so that the structure is simple and compact, the assembly is simple, and the energy density of the unit volume of the battery pack is improved; the electric core 11 is in direct contact with the cooling liquid 6, the heating and cooling efficiency is high, and the temperature equalization of the single electric core 11 is obviously improved compared with the indirect cooling; insulating coolant liquid 6 is full of electric core 11 surrounding space, and when individual electric core 11 when the thermal runaway appeared, early heat had not accumulated temporarily, and coolant liquid 6 acts as the effect of heat insulating mattress and isolated air, can play the effect of suppression and cooling to the thermal diffusion, reserves more safe time of fleing for the passenger.
Referring to fig. 2 and 4, the flow guiding plate 14 includes two portions, namely, a first portion located in the liquid inlet chamber 8 and a second portion located between the flow equalizing plate 7 and the battery pack, that is, the two portions of the flow guiding plate 14 are respectively located on the left and right sides of the flow equalizing plate 7, the first portion is located on the left side, and the second portion is located on the right side. As shown in fig. 2, the first portion is inclined toward the inlet 3, the second portion is parallel to the cells 11, so as to guide the cooling liquid 6 to the flow channels between the cells 11, the first portion is inclined toward the inlet 3, and the second portion is parallel to the cells 11, so that the flow guide effect is good, the fluid flow rate and direction uniformity of each flow channel in the battery pack can be uniformly improved, the occurrence of flow dead zones is prevented, and the temperature uniformity of the whole battery pack is improved.
In one embodiment, the flow guiding plate 14 can be formed by stamping on the flow equalizing plate 7, and the flow guiding plate 14 is stamped on the flow equalizing plate 7, so that the flow guiding plate 14 and the flow equalizing plate 7 can be formed without additionally mounting the flow guiding plate 14 and the flow equalizing plate 7 together, thereby simplifying the assembly steps and improving the structural integrity of the battery pack.
Referring to fig. 2, the cross sections of the liquid inlet chamber 8 and the liquid outlet chamber 9 are both wedge-shaped, that is, the projections of the liquid inlet chamber 8 and the liquid outlet chamber 9 in the plane formed by the X direction and the Y direction are wedge-shaped, one end of the liquid inlet chamber 8 along the Y direction is larger than the other end of the liquid inlet chamber 3, and one end of the liquid outlet chamber 9 along the Y direction is larger than the other end of the liquid outlet chamber 4. In the figure 2, the liquid inlet 3 is arranged at the rear end of the liquid inlet cavity 8, so that the rear end of the liquid inlet cavity 8 is large, and the front end of the liquid outlet cavity 9 is small, and the liquid outlet 4 is arranged at the front end of the liquid outlet cavity 9, so that the front end of the liquid outlet cavity 9 is large, and the rear end of the liquid outlet cavity is small. The liquid inlet cavity 8 and the liquid outlet cavity 9 of the wedge-shaped structures can enable the flow resistance and the flow rate of the flow channels among the battery cells 11 to be consistent, and further improve the temperature uniformity of the whole battery pack.
Specifically, referring to fig. 1, the upper cover 1 has a substantially rectangular structure, and includes five side walls, namely a front side wall, a rear side wall, a left side wall, a right side wall, and a top side wall, and the upper cover 1 is covered on the tray 2 to form an inner accommodating space of the battery pack. Referring to fig. 2, the liquid inlet chamber 8 and the liquid outlet chamber 9 are respectively located at the left and right sides of the upper cover 1, and the left and right side walls of the upper cover 1 are both set to form a non-right angle with the front and rear side walls, so that the liquid inlet chamber 8 and the liquid outlet chamber 9 form a wedge-shaped structure. As shown in fig. 2, the battery pack and the flow equalizing plate 7 are perpendicular to the front and rear side walls of the upper cover 1, and the battery cells 11 are parallel to the front and rear side walls of the upper cover 1.
Referring to fig. 3 and 5, the immersed liquid-cooled battery pack further includes a bottom bracket 5, the bottom bracket 5 is disposed at the bottom of the housing, specifically, the bottom bracket 5 is disposed on the tray 2 and is used for placing the battery cell 11, as shown in fig. 5, a slot 51 extending along the X direction is disposed on the bottom bracket 5, and the battery cell 11 is clamped in the slot 51. The plurality of groove bodies 51 are arranged, each groove body 51 extends from the left end to the right end of the tray 2, the plurality of groove bodies 51 are arranged at intervals along the front-back direction, and the gaps among the groove bodies 51 are the first gaps 12 among the battery cores 11. A circle of flanges 52 are further arranged around the area where the battery pack is arranged on the bottom support 5, and the flanges 52 are used for integrally limiting the outer ring of the battery pack, limiting the placement range of the battery cell 11 and avoiding the outward movement of the battery cell 11.
Referring to fig. 3, the immersed liquid-cooled battery pack further includes a top beam 10, the top beam 10 is disposed on the top of the housing, that is, the top beam 10 is disposed on the upper cover 1, and two ends of the top beam 10 are respectively fixed on the front and rear side walls of the upper cover 1. The top beam 10 is arranged along the Y direction, and the top beam 10 abuts against the top of the battery cell 11, so as to fix and limit the top of the battery cell 11. The two top cross beams 10 are matched to fix a group of battery packs, and the two top cross beams 10 are respectively abutted to the left side and the right side of the battery packs. The fixing and limiting of the whole battery cell 11 can be realized by combining the fixing and limiting of the bottom of the battery cell 11 by the groove body 51 on the bottom bracket 5.
In an embodiment, as shown in fig. 3, the cross section of the top cross beam 10 is right-angled, that is, the projection of the top cross beam 10 on the plane formed by the X direction and the Z direction is a right angle, so that the top cross beam 10 can be clamped on one corner of the battery cell 11, and the inside wall of the top cross beam 10 is attached to the top corner of the battery cell 11, thereby achieving better limiting and fixing effects.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An immersed liquid-cooled battery pack, comprising:
the battery pack comprises a shell, wherein at least one group of battery packs is arranged in the shell, and each battery pack comprises a plurality of battery cells (11) arranged at intervals along a first direction; a liquid inlet cavity (8) and a liquid outlet cavity (9) are respectively arranged on two sides of the battery pack along a second direction, and the second direction is vertical to the first direction; a liquid inlet (3) is formed in one of two ends of the liquid inlet cavity (8) along the first direction, and a liquid outlet (4) is formed in one end of the liquid outlet cavity (9) along the first direction, which is different from the liquid inlet (3), so that cooling liquid (6) enters the liquid inlet cavity (8) from the liquid inlet (3), flows into the liquid outlet cavity (9) after flowing through the battery pack, and flows out from the liquid outlet (4);
the flow equalizing plate (7) is arranged between the liquid inlet cavity (8) and the battery pack, the flow equalizing plate (7) is arranged along the first direction, a liquid through hole is formed in the flow equalizing plate (7), and a plurality of flow deflectors (14) are arranged in the liquid through hole at intervals along the first direction.
2. The submerged, liquid-cooled battery pack according to claim 1, wherein the flow deflector (14) comprises a first portion located in the inlet chamber (8) and a second portion located between the flow equalizer plate (7) and the battery pack, the first portion being inclined towards the inlet (3) and the second portion being parallel to the cells (11).
3. The immersed liquid-cooled battery pack according to claim 1, wherein the cross-sections of the liquid inlet chamber (8) and the liquid outlet chamber (9) are both wedge-shaped, one end of the liquid inlet chamber (8) along the first direction is larger, the other end is smaller, one end of the liquid outlet chamber (9) along the first direction is larger, the other end is smaller, and the wedge-shaped liquid inlet chamber (8) and the liquid outlet chamber (9) enable the flow resistance and the flow rate of the flow channel between the battery cells (11) to be consistent.
4. The immersed liquid-cooled battery pack according to claim 1, further comprising a bottom bracket (5) disposed at the bottom of the housing, wherein a slot (51) extending along the second direction is disposed on the bottom bracket (5), and the battery cell (11) is clamped in the slot (51).
5. The submerged, liquid-cooled battery pack of claim 4, further comprising a top beam (10) disposed at a top of the housing, the top beam (10) being disposed along the first direction, the top beam (10) abutting a top of the cells (11).
6. The submerged, liquid-cooled battery pack of claim 5, wherein the cross-section of the top beam (10) is right-angled so that the top beam (10) can be snapped onto a corner of the cell (11).
7. The submerged, liquid-cooled battery pack of claim 6, wherein the housing includes a tray (2) and an upper cover (1) that covers the tray (2), the bottom bracket (5) is disposed on the tray (2), and the top cross member (10) is disposed on the upper cover (1).
8. The submerged, liquid-cooled battery pack of claim 1, wherein the gap between adjacent cells (11) in each battery pack is 2-6 mm.
9. The submerged, liquid-cooled battery pack of claim 1, wherein the plurality of battery packs are spaced apart along the second direction.
10. The submerged, liquid-cooled battery pack of claim 2, wherein the gap between adjacent sets of battery packs is between 10-22 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011035446.XA CN112103594A (en) | 2020-09-27 | 2020-09-27 | Immersed liquid-cooled battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011035446.XA CN112103594A (en) | 2020-09-27 | 2020-09-27 | Immersed liquid-cooled battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112103594A true CN112103594A (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202011035446.XA Pending CN112103594A (en) | 2020-09-27 | 2020-09-27 | Immersed liquid-cooled battery pack |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751103A (en) * | 2020-12-22 | 2021-05-04 | 江苏苏美达五金工具有限公司 | Liquid cooling battery pack |
| CN113571803A (en) * | 2021-07-27 | 2021-10-29 | 苏州清陶新能源科技有限公司 | Battery module and battery system |
| CN114006103A (en) * | 2021-11-02 | 2022-02-01 | 上海兰钧新能源科技有限公司 | Immersed liquid cooling battery system |
| CN114361650A (en) * | 2022-01-07 | 2022-04-15 | 中山大学 | Experimental research system and method for thermal management performance of immersed cooling battery |
| CN114388942A (en) * | 2021-12-01 | 2022-04-22 | 中国第一汽车股份有限公司 | Battery thermal management device, battery assembly, electric vehicle and design method |
| CN114464924A (en) * | 2022-04-13 | 2022-05-10 | 天津市捷威动力工业有限公司 | Power battery pack with immersion cooling, immersion cooling method and vehicle |
| CN114976382A (en) * | 2022-06-10 | 2022-08-30 | 浙江大学 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
| CN116780034A (en) * | 2023-08-09 | 2023-09-19 | 中科开创（广州）智能科技发展有限公司 | Full-immersion non-circulating flow liquid-cooled battery energy storage thermal management system |
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2020
- 2020-09-27 CN CN202011035446.XA patent/CN112103594A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751103A (en) * | 2020-12-22 | 2021-05-04 | 江苏苏美达五金工具有限公司 | Liquid cooling battery pack |
| CN113571803A (en) * | 2021-07-27 | 2021-10-29 | 苏州清陶新能源科技有限公司 | Battery module and battery system |
| CN114006103A (en) * | 2021-11-02 | 2022-02-01 | 上海兰钧新能源科技有限公司 | Immersed liquid cooling battery system |
| CN114388942A (en) * | 2021-12-01 | 2022-04-22 | 中国第一汽车股份有限公司 | Battery thermal management device, battery assembly, electric vehicle and design method |
| CN114361650A (en) * | 2022-01-07 | 2022-04-15 | 中山大学 | Experimental research system and method for thermal management performance of immersed cooling battery |
| CN114464924A (en) * | 2022-04-13 | 2022-05-10 | 天津市捷威动力工业有限公司 | Power battery pack with immersion cooling, immersion cooling method and vehicle |
| CN114976382A (en) * | 2022-06-10 | 2022-08-30 | 浙江大学 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
| CN116780034A (en) * | 2023-08-09 | 2023-09-19 | 中科开创（广州）智能科技发展有限公司 | Full-immersion non-circulating flow liquid-cooled battery energy storage thermal management system |
| CN116780034B (en) * | 2023-08-09 | 2024-03-12 | 中科开创（广州）智能科技发展有限公司 | Full-immersion non-circulating flow liquid-cooled battery energy storage thermal management system |
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