CN213546416U - Liquid cooling board and battery package - Google Patents
Liquid cooling board and battery package Download PDFInfo
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- CN213546416U CN213546416U CN202020761563.3U CN202020761563U CN213546416U CN 213546416 U CN213546416 U CN 213546416U CN 202020761563 U CN202020761563 U CN 202020761563U CN 213546416 U CN213546416 U CN 213546416U
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Abstract
The utility model relates to a battery cooling technology field provides a liquid cooling board, battery package and flow control method, the liquid cooling board, including first pressure manifold and the second pressure manifold that the interval set up, both ends communicate the mouth organ nest of tubes of first pressure manifold and second pressure manifold respectively, first pressure manifold is equipped with the water inlet, the second pressure manifold is equipped with the delivery port, the mouth organ nest of tubes includes a plurality of sub-mouth organ pipes that interval and set up side by side in proper order, each sub-mouth organ pipe has the first end that communicates with first pressure manifold and communicates with the second end of second pressure manifold, each sub-mouth organ pipe all has a plurality of runners; the cross-sectional area of each flow channel at the first end of each sub-harmonica tube presents an increasing trend along the direction deviating from the water inlet; and/or the cross-sectional area of each flow channel at the second end of each sub-harmonica pipe presents an increasing trend along the direction departing from the water outlet. The flow resistance of each sub-harmonica tube of the liquid cooling plate tends to be balanced, namely the flow of each sub-harmonica tube tends to be theoretical flow, so that the heat exchange of the whole liquid cooling plate can be balanced.
Description
Technical Field
The utility model relates to a battery cooling technology field especially provides a liquid cooling board and have battery package of this liquid cooling board.
Background
The charging power, discharging power and heating power of the vehicle power battery are directly related to the temperature inside the battery. When the temperature is too low, the battery can not be charged and discharged; when the temperature is too high, the service life of the battery is reduced, and there is a risk of thermal runaway. Therefore, it is necessary to adopt an active temperature control system to regulate the temperature inside the battery so that the temperature variation thereof is within a reasonable range.
Harmonica tubular liquid cooling board is a more mature power battery heat dissipation/heating equipment at present, because its simple structure, quality light and mould cost low grade a great deal of advantage, the wide application is on pure electric vehicles and hybrid vehicle.
For a power battery liquid cooling system, a plurality of harmonica tubes connected in series and parallel are connected through a collecting pipe, theoretically, the flow resistance of each harmonica tube is consistent, but actually, the flow resistance of the harmonica tubes close to an inlet and an outlet is small, and the flow of cooling liquid is large; and the harmonica tube far away from the inlet and the outlet has large flow resistance and small flow of the cooling liquid. In order to improve the flow resistance of each harmonica tube, a throttling hole is usually arranged inside a collecting pipe or on a pipeline street, and the flow rate adjusting effect cannot be expected in the mode, so that the pressure drop of a liquid cooling system is greatly improved, the power consumption of a water pump is increased, and the power output of a battery pack is finally reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a liquid cooling board aims at solving the unbalanced problem that leads to the heat exchange capacity of the flow resistance of current liquid cooling board.
In order to achieve the above object, the utility model adopts the following technical scheme: a liquid cooling plate comprises a first collecting pipe and a second collecting pipe which are arranged at intervals, and a harmonica pipe group, wherein the two ends of the harmonica pipe group are respectively communicated with the first collecting pipe and the second collecting pipe; the cross-sectional area of each flow channel at the first end of each sub-harmonica tube presents an increasing trend along the direction deviating from the water inlet; and/or the cross-sectional area of each flow channel at the second end of each sub-harmonica pipe presents an increasing trend along the direction departing from the water outlet.
The utility model has the advantages that: the utility model provides a liquid cooling board, wherein, the cross sectional area who carries out each runner of each sub-harmonica pipe of heat exchange with the battery module carries out the adaptability adjustment according to the position of the first end of current sub-harmonica pipe and second end to the flow resistance of balanced each sub-harmonica pipe reaches the balanced purpose of heat exchange. Specifically, in each sub-harmonica pipe arranged between the first collecting pipe and the second collecting pipe, because the flow rate close to the water inlet is large and the flow resistance is small, the cross-sectional area of each flow channel at the first end of each sub-harmonica pipe presents an increasing trend along the direction departing from the water inlet, so that the sub-harmonica pipes far away from the water inlet obtain the same or similar flow rate. Similarly, because the flow rate close to the water outlet is large and the flow resistance is small, the section area of each flow channel at the second end of each sub-harmonica tube presents an increasing trend along the direction departing from the water outlet, so that the sub-harmonica tubes far away from the water outlet obtain the same or similar flow rate.
In one embodiment, the increasing trend of the section area of each flow passage at the first end of each sub-harmonica pipe is non-continuously increased; and/or the increasing trend of the section area of each flow passage at the second end of each sub-harmonica pipe is discontinuously increased.
In one embodiment, the cross-sectional area of each flow passage in the same sub-harmonica tube takes the first end or the second end as an increasing starting end;
if the minimum distance from the first end to the water inlet is smaller than the minimum distance from the second end to the water outlet, the first end is an increasing initial end of the sectional area of each flow channel, and otherwise, the second end is an increasing initial end of the sectional area of each flow channel.
Through adopting above-mentioned technical scheme, when the minimum distance of first end to water inlet of same sub-mouth organ pipe is different rather than the minimum distance of second end to the delivery port rather than, use the one end that the distance is little as increasing progressively the initiating terminal, this kind of condition is applicable to water inlet and delivery port in the different side, perhaps, each sub-mouth organ pipe is not equidistance setting.
In one embodiment, the cross-sectional area of each flow passage increases discontinuously in the same sub-harmonica tube.
In one embodiment, in the same sub-harmonica, the minimum distance from the first end to the water inlet is equal to the minimum distance from the second end to the water outlet, and the cross-sectional areas of the flow channels of the current sub-harmonica are consistent along the flowing direction of the cooling liquid.
By adopting the technical scheme, namely, when the minimum distance from the first end of the same sub-harmonica pipe to the water inlet is the same as the minimum distance from the second end of the same sub-harmonica pipe to the water outlet, the device is suitable for the condition that the water inlet and the water outlet are on the same side, or the sub-harmonica pipes are arranged in a peer-to-peer manner.
In one embodiment, the cross-sectional area of each flow passage in the radial direction is 1.95mm2～3.2mm2。
By adopting the technical scheme, each flow channel is subjected to micro-channelization, namely the flow resistance of each flow channel is smaller, the flow speed is faster, and the purpose of balancing the flow of each sub-harmonica tube is achieved.
In one embodiment, the first manifold is provided with a plurality of first fasteners; and/or the second header is provided with a plurality of second fasteners.
By adopting the technical scheme, the liquid cooling plate is integrally fixed and limited by the first fasteners and the second fasteners.
In one embodiment, the first header has a first bending section bent toward the second header, and the second header has a second bending section bent toward the first bending section, wherein two ends of the plurality of sub-harmonica tubes are respectively communicated with the first bending section and the second bending section.
Through adopting above-mentioned technical scheme, further increase the quantity of arranging of sub-harmonica pipe to the heat exchange demand of the battery module that adapts to a large number more.
In one embodiment, the harmonica sub-tube comprises a tube body, wherein two opposite ends of the tube body are bent towards the same side to form a bent portion, and the bent portion is connected to the first collecting pipe or the second collecting pipe.
Through adopting above-mentioned technical scheme, the sub-harmonica pipe is "n" type to shorten the distance between the battery module of body and battery package, shorten the heat conduction route between sub-harmonica pipe and the battery module promptly, improved heat exchange efficiency.
The utility model also provides a battery pack, including a plurality of battery modules, baffle and foretell liquid cooling board, the baffle is located between battery module and the liquid cooling board.
The utility model has the advantages that: the utility model provides a battery package, on the basis that has above-mentioned liquid cooling board, the work heat of each battery module is balanced, and work efficiency is high. Meanwhile, the battery module is separated from the liquid cooling plate by the partition plate, so that the damage of short circuit of the battery pack caused by liquid leakage of the liquid cooling plate is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a liquid cooling plate according to an embodiment of the present invention;
fig. 2a to fig. 2d are cross-sectional views of a harmonica sub-tube of a liquid cooling plate according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a sub-mouth organ pipe of the liquid cooling plate provided by the embodiment of the present invention;
fig. 4a is a schematic structural view of a liquid cooling plate according to an embodiment of the present invention;
fig. 4b is a schematic structural view of a liquid cooling plate according to a second embodiment of the present invention;
fig. 5 is a flow resistance network diagram of the liquid cooling plate cooling liquid provided by the embodiment of the present invention;
fig. 6 is a coolant flow rate comparison statistical chart of each sub-harmonica tube of the liquid cooling plate provided by the embodiment of the present invention;
fig. 7 is another coolant flow rate comparison statistical chart of each sub-harmonica tube of the liquid cooling plate provided by the embodiment of the present invention;
fig. 8 is an exploded view of a battery pack according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
the liquid cooling plate comprises a liquid cooling plate 100, a first collecting pipe 10, a first bending section 11, a second collecting pipe 20, a second bending section 21, a harmonica pipe group 30, a water inlet 10a, a water outlet 20a, a sub-harmonica pipe 31, a first end 31a, a second end 31b, a flow channel 31c, a water inlet joint 41, a water outlet joint 42, a pipe body 311, a bending part 312, a first fastening piece 51, a second fastening piece 52, a battery module 200 and a partition plate 300.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of 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 construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" 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" or "second" 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 specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 to 4b, the present invention provides a liquid cooling plate 100, including first collecting pipe 10 and second collecting pipe 20 that the interval set up, harmonica nest of tubes 30 that both ends communicate first collecting pipe 10 and second collecting pipe 20 respectively, first collecting pipe 10 is equipped with water inlet 10a, second collecting pipe 20 is equipped with delivery port 20a, harmonica nest of tubes 30 includes a plurality of sub-harmonica pipes 31 that interval just set up side by side in proper order, each sub-harmonica pipe 31 has first end 31a that communicates in first collecting pipe 10 and communicates in second end 31b of second collecting pipe 20, each sub-harmonica pipe 31 all has a plurality of runners 31 c. According to the comparison between the theoretical flow resistance value and the actual flow resistance value of each harmonica subplot tube 31, the cross-sectional area of the flow channel 31c of each harmonica subplot tube 31 is adaptively adjusted, so that the flow of each harmonica subplot tube 31 of the liquid cooling plate 100 is balanced, that is, the heat exchange capacity of each harmonica subplot tube 31 is balanced, and the specific design idea is as follows:
under the condition that the liquid supply capacity of the external liquid cooling system is certain, the flow rate of the cooling liquid of each sub-harmonica tube 31 of the harmonica tube group 30 is required to be ensured to be possibly close to the theoretical flow rate value m of the cooling liquid. For example, as shown in fig. 1, in the present embodiment, there are 17 sub-harmonica tubes 31 in the harmonica tube group 30, and the total flow rate of liquid supplied from the external liquid cooling system is set to MtotalThen, the theoretical coolant flow rate of each sub-harmonica tube 31 is M ═ Mtotal*/17. In thatWith reference to fig. 5, fig. 5 is a flow resistance network diagram of the liquid cooling plate cooling liquid provided by the embodiment of the present invention, wherein R is1、 R2、R3…RnRepresenting the flow resistance and R on the first header 101’、R2’、R3’…Rn' represents the flow resistance on the second header 20; r is1、r2、r3…rnRepresenting the flow resistance over the daughter harmonica tube 31. P1、P2、P3…PnAnd P1’、 P2’、P3’…Pn' represents the pressure at the location of each bifurcation. Assuming that the total flow rate of the cooling liquid of the liquid-cooling plate 100 is a constant value, the flow rate through each sub-harmonica tube 31 is m1、m2、m3…mnAnd then:
m1+m2+m3+…+mn＝mtotal
when R isi＜＜riAnd R isi’＜＜riAnd (i ═ 1,2,3 … n), then:
P1≈P2≈P3≈…≈Pn
P1’≈P2’≈P3’≈…≈Pn’
this gives:
ΔP1≈ΔP2≈ΔP3≈…≈ΔPn
wherein Δ Pi＝Pi-Pi’(i＝1,2,3...n)
Assuming that the flow resistance of each sub-harmonica tube 31 is the same, i.e., r1＝r2＝r3＝…＝rnWhen r, the pressure difference at the inlet and the outlet of each sub-mouth organ pipe 31 is similar, delta P1≈ΔP2≈ΔP3≈…≈ΔPnAnd then:
m1≈m2≈m3≈…≈mn
the coolant flow rate of each sub-harmonica tube 31 is close to the target value m.
Please refer to fig. 6, fig. 6 shows the present embodimentThe statistical chart is compared by using the cooling liquid flow of each sub-harmonica tube of the liquid cooling plate provided by the novel embodiment, wherein 17 sub-harmonica tubes 31 are marked as 1-1, 2-2, 2-3, 2-4, 3-1, 3-2, 3-3, 3-4, 4-1, 4-2, 4-3, 4-4, 5-1, 5-2, 5-3 and 5-4 in sequence. And the three bar graphs in the figure sequentially show the theoretical cooling liquid flow rate of each harmonica sub-pipe 31, the actual cooling liquid flow rate of each harmonica sub-pipe 31 and the actual cooling liquid flow rate of each harmonica sub-pipe 31 of the control group. The cross-sectional area of the flow passage 31c of each sub-harmonica tube 31 of the present application is 1.95mm2～3.2mm2And, the cross-sectional area of the flow passage 31c of each sub-harmonica tube 31 is kept consistent, while the specification of the flow passage 31c of each sub-harmonica tube 31 of the control group is the conventional specification, and the cross-sectional area of the flow passage 31c is 12mm2～30mm2And the flow passage section area of each conventional harmonica tube is also kept consistent. As can be seen from fig. 6, the flow rate of the cooling liquid of each sub-harmonica tube 31 of the liquid cooling plate 100 of the present application tends to be even and more balanced than that of each harmonica tube of the existing liquid cooling plate of the conventional specification.
However, with continued reference to fig. 6, the flow rates of the sub-harmonica tubes 1-1, 2-2, 2-3, and 2-4 near the water inlet 10a and the water outlet 20a are greater than the flow rates of the sub-harmonica tubes 5-1, 5-2, 5-3, and 5-4 far from the water inlet 10a and the water outlet 20a, and the cross-sectional areas of the flow passages 31c of the respective sub-harmonica tubes 31 are adjusted according to the above phenomenon. The cross-sectional area of the flow channel 31c of the sub-harmonica pipe 31 close to the water inlet 10a and the water outlet 20a is reduced, the flow resistance is improved, and the flow rate is reduced, so that the flow rate of each sub-harmonica pipe 31 far away from the water inlet 10a and the water outlet 20a is increased, and meanwhile, the cross-sectional area of the flow channel 31c of each sub-harmonica pipe 31 far away from the water inlet 10a and the water outlet 20a is increased, the flow resistance is reduced, and the flow rate is increased. As a result, the cross-sectional area of each flow passage 31c of the first end 31a of each sub-harmonica tube 31 increases in a direction away from the water inlet 10 a; and/or the cross-sectional area of each flow passage 31c of the second end 31b of each sub-harmonica pipe 31 increases in the direction away from the water outlet 20 a. Namely, there are three cases, that is, only the sectional area of each flow passage 31c of the first end 31a of each sub-harmonica tube 31 is subjected to a lateral adjustment in an increasing direction in a direction away from the water inlet 10 a; secondly, only the cross-sectional area of each flow channel 31c of the second end 31b of each subportum tube 31 presents another horizontal adjustment of increasing trend along the direction departing from the water outlet 20 a; thirdly, the sectional area of each flow passage 31c of the first end 31a of the harmonica sub-pipe 31 increases in a direction away from the water inlet 10a, and the sectional area of each flow passage 31c of the second end 31b of each harmonica sub-pipe 31 increases in a direction away from the water outlet 20a, that is, in the same harmonica sub-pipe 31, the sectional area of each flow passage 31c increases in a direction with the first end 31a or the second end 31b as an increasing starting end, so that the transverse adjustment and the longitudinal adjustment can be understood. Specifically, referring to fig. 7, fig. 7 is another statistical chart of the cooling liquid flow rate comparison of each sub-harmonica tube of the liquid cooling plate according to the embodiment of the present invention, wherein 17 sub-harmonica tubes 31 are sequentially labeled as 1-1, 2-2, 2-3, 2-4, 3-1, 3-2, 3-3, 3-4, 4-1, 4-2, 4-3, 4-4, 5-1, 5-2, 5-3, and 5-4. And the three bar graphs in the figure sequentially show the theoretical cooling liquid flow rate of each harmonica sub-pipe 31, the actual cooling liquid flow rate of each harmonica sub-pipe 31 and the actual cooling liquid flow rate of each harmonica sub-pipe 31 after the cross-sectional area of the flow passage 31c is adjusted. As can be seen from fig. 7, by adjusting the cross-sectional area of the flow passage 31c according to the above principle, the coolant flow rates of the respective sub-harmonica tubes 31 are more balanced, and the coolant flow rates of the respective sub-harmonica tubes 31 tend to be the theoretical values.
The utility model provides a liquid cooling plate 100 compares according to theoretical coolant flow and the actual coolant flow of each tang musical instrument pipe 31 to constantly debug the cross sectional area of each runner 31c of each tang musical instrument pipe 31, specifically, the debugging result presents the trend that increases for the cross sectional area of each runner 31c of first end 31a of each tang musical instrument pipe 31 along deviating from water inlet 10a direction; and/or the cross-sectional area of each flow passage 31c of the second end 31b of each sub-harmonica pipe 31 increases in the direction away from the water outlet 20 a. In this way, the flow resistance of each sub-harmonica tube 31 of the liquid cooling plate 100 tends to be balanced, that is, the heat exchange energy of the whole liquid cooling plate 100 is balanced.
In one embodiment, the increasing trend of the cross-sectional area of each flow passage 31c of the first end 31a of each sub-harmonica tube 31 is non-continuously increasing; and/or the increasing trend of the section area of each flow passage 31c of the second end 31b of each sub-harmonica pipe 31 is non-continuously increased. It should be understood that, in the actual use process, the cross-sectional area of each flow passage 31c of each sub-harmonica tube 31 may be continuously or discontinuously increased, and the discontinuous increase means that the cross-sectional area of each flow passage 31c of the first end 31a of two adjacent sub-harmonica tubes 31 may be equal along the direction of the flow of the cooling liquid for connecting each sub-harmonica tube 31 of the first header 10. Similarly, the cross-sectional areas of the flow passages 31c at the second ends 31b of the two adjacent sub-harmonica tubes 31 may be equal along the direction in which the cooling liquid flows, so as to connect the sub-harmonica tubes 31 of the second header 20. Here, the increasing tendency of the sectional area of each flow passage 31c of the harmonica sub-tube 31 may be expressed as an increase in the number of flow passages 31c or an increase in the sectional area of a single flow passage 31 c.
Example one
Referring to fig. 4a, in the present embodiment, since the flow resistance of the harmonica sub-pipe 31 is smaller closer to the water inlet 10a or the water outlet 20a, the increasing start end of the cross-sectional area of each flow channel 31c in the same harmonica sub-pipe 31 is determined by the minimum distance from the first end 31a of the harmonica sub-pipe 31 to the water inlet 10a and the minimum distance from the second end 31b thereof to the water outlet 20 a. Specifically, in the same harmonica sub-tube 31, when the minimum distance from the first end 31a of the harmonica sub-tube 31 to the water inlet 10a is smaller than the minimum distance from the second end 31b thereof to the water outlet 20a, the flow rate of the harmonica sub-tube is more influenced by the water inlet, and then the first end 31a is an increasing start end of the cross-sectional area of each flow passage 31 c. Meanwhile, the cross-sectional area of each flow channel 31c of the second end 31b is larger than that of each flow channel 31c of the first end 31a, that is, the flow rate of each flow channel 31c increases along the flowing direction of the cooling liquid, and conversely, the second end 31b is the increasing starting end of the cross-sectional area of each flow channel 31 c. The situation is applicable to the situation that the water inlet 10a and the water outlet 20a of the liquid cooling plate 100 are on different sides, and as the sub-harmonica tubes 31 communicated with the first collecting pipe 10 are closer to the water inlet 10a, the lower the flow resistance of the sub-harmonica tubes 31 is, the higher the flow rate is; similarly, the closer each sub-harmonica tube 31 communicated with the second collecting pipe 20 is to the water outlet 20a, the lower the flow resistance of the sub-harmonica tube 31 is, the higher the flow rate is. Therefore, in order to equalize the flow rates of the coolant in the respective sub-harmonica tubes 31, the incremental starting ends thereof are determined based on the flow groups.
Preferably, in the same sub-harmonica tube 31, the increasing trend of the sectional area of each flow passage 31c is a discontinuous increase. It should be understood that the cross-sectional area of each flow channel 31c of the same harmonica sub-tube 31 may be continuously or discontinuously increased, the continuous increase means that the inner diameter of each flow channel 31c is continuously increased and is in a trumpet shape, and the discontinuous increase means that the inner diameter of each flow channel 31c is gradually increased in a step shape in a sectional manner along the flowing direction of the cooling liquid, so that the flow rate of the flow channel 31c is adjusted and the processing is facilitated.
Referring to fig. 2, in one embodiment, the cross section of the flow channel 31c of each sub-harmonica pipe 31 is circular or polygonal. According to the actual use requirement, the section shape of the flow passage 31c is selected to be appropriate. Specifically, the cross section of the flow channel 31c of each harmonica subplenum 31 is rectangular, the height W of the flow channel 31c is 1.3mm to 1.6mm, and the height W of the flow channel 31c may be 1.3mm, 1.4mm, 1.5mm, 1.6mm, or the like, for example. The width H of the flow channel 31c is 1.5mm to 2.0mm, and the height H of the flow channel 31c may be 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, or the like, for example. Specifically, as shown in fig. 2a, fig. 2a is a sectional view of the flow passage 31c of the harmonica sub-tube 31 of reference numerals 4-1 to 5-4; FIG. 2 is a sectional view of the flow passage 31c of the harmonica subplenum 31 of reference numerals 3-1 to 3-4; FIG. 2c is a sectional view of the flow passage 31c of the harmonica sub-tube 31 numbered 2-1 to 2-4;
fig. 2d is a sectional view of the flow passage 31c of the 1-1 sub-harmonica tube 31.
Referring to fig. 1, in one embodiment, the water inlet 10a is provided with a water inlet joint 41, and the water outlet 20a is provided with a water outlet joint 42. Here, the water inlet joint 41 and the water outlet joint 42 are connected to the corresponding headers by welding, that is, an external cooling liquid circulation system is connected through the water inlet joint 41 and the water outlet joint 42, thereby supplying the circulating cooling liquid to the harmonica tube set 30.
Referring to fig. 3, in an embodiment, the harmonica sub-tube 31 includes a tube body 311, two opposite ends of the tube body 311 are bent toward the same side to form a bent portion 312, and the bent portion 312 is connected to the first header 10 or the second header 20. Here, the sub-harmonica pipe 31 is "n" type, and after two bending portions 312 are connected with corresponding collecting pipes, the pipe body 311 protrudes outwards, so as to shorten the distance between the pipe body 311 and the battery module of the battery pack, that is, the heat conduction path between the sub-harmonica pipe 31 and the battery module is shortened, and the heat exchange efficiency is improved.
Referring to fig. 1, in one embodiment, the first manifold 10 is provided with a plurality of first fasteners 51; the second manifold 20 is provided with a plurality of second fasteners 52. Here. The first fasteners 51 and the second fasteners 52 are used to fix the entire liquid cooling plate 100, thereby preventing the liquid cooling plate 100 from shifting.
In one embodiment, the cross-section of the first header 10 and/or the second header 20 is a rectangular flat structure, so as to fully utilize the space, meet the envelope limitation requirement, and ensure that the pressure loss meets the design requirement.
Referring to fig. 1, in an embodiment, the first header 10 has a first bending section 11 bent toward the second header 20, the second header 20 has a second bending section 21 bent toward the first bending section 11, and two ends of a plurality of sub-harmonica tubes 31 are respectively connected to the first bending section 11 and the second bending section 21. It is understood that the first collecting pipe 10 and the second collecting pipe 20 are bent to meet the actual liquid cooling requirement of the liquid cooling plate 100, i.e., a battery module to be heat-exchanged may be disposed between the first bending section 11 and the second bending section 21.
Example two
Referring to fig. 4b, the difference from the above embodiment is that, in the same sub-harmonica tube, when the minimum distance from the first end 31a of the sub-harmonica tube 31 to the water inlet 10a is equal to the minimum distance from the second end 31b thereof to the water outlet 20a, the cross-sectional area of each flow channel 31c of the current sub-harmonica is kept consistent along the flowing direction of the cooling liquid. This applies to the case where the water inlet 10a and the water outlet 20a are on the same side, that is, when the sub-harmonica tubes 31 are arranged side by side between the first header 10 and the second header 20, the minimum distance from the first end 31a of the same sub-harmonica tube 31 to the water inlet 10a is equal to the minimum distance from the second end 31b thereof to the water outlet 20 a. Thus, the sectional area of each flow passage 31c of each sub-harmonica tube 31 is adjusted only by the distance from the water inlet port 10a or the water outlet port 20a, i.e., a single lateral adjustment.
Referring to fig. 8, the present invention further provides a battery pack, which includes a plurality of battery modules 200, a partition 300 and the liquid cooling plate 100, wherein the partition is disposed between the battery modules 200 and the liquid cooling plate 100. With the liquid cooling plate 100, the operation heat of each battery module 200 is balanced, and the operation efficiency is high. Meanwhile, the battery module 200 is separated from the liquid cooling plate 100 by the partition plate 300, so that the damage of short circuit of the battery pack caused by liquid leakage of the liquid cooling plate 100 is avoided.
Preferably, in one embodiment, a heat conductive material is filled between the separator plate 300 and the battery module 200, and a heat conductive material is filled between the separator plate 300 and the liquid cooling plate 100. Namely, a structure similar to a sandwich is formed, so that the risk of short circuit of the battery caused by liquid leakage of the liquid cooling plate 100 is completely avoided.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a liquid cooling board, first pressure manifold and second pressure manifold, both ends that set up including the interval communicate respectively first pressure manifold with the harmonica nest of tubes of second pressure manifold, first pressure manifold is equipped with the water inlet, the second pressure manifold is equipped with delivery port, its characterized in that: the harmonica tube group comprises a plurality of sub-harmonica tubes which are sequentially arranged at intervals side by side, each sub-harmonica tube is provided with a first end communicated with the first collecting pipe and a second end communicated with the second collecting pipe, and each sub-harmonica tube is provided with a plurality of flow channels; the cross-sectional area of each flow passage of the first end of each sub-harmonica tube presents an increasing trend in a direction away from the water inlet; and/or the cross-sectional area of each flow channel of the second end of each sub-harmonica tube increases along the direction deviating from the water outlet.
2. The liquid cold plate of claim 1, wherein: the increasing trend of the section area of each flow channel at the first end of each sub-harmonica tube is discontinuous and increased; and/or the increasing trend of the section area of each flow passage of the second end of each sub-harmonica tube is discontinuously increased.
3. The liquid cold plate of claim 1, wherein: in the same sub-harmonica tube, the cross-sectional area of each flow passage takes the first end or the second end as an increasing initial end;
if the minimum distance from the first end to the water inlet is smaller than the minimum distance from the second end to the water outlet, the first end is an increasing starting end of the sectional area of each flow channel, and otherwise, the second end is an increasing starting end of the sectional area of each flow channel.
4. The liquid-cooled panel of claim 3, wherein: in the same sub-harmonica tube, the increasing trend of the section area of each flow passage is discontinuously increased.
5. The liquid cold plate of claim 1, wherein: in the same daughter harmonica, the minimum distance from the first end to the water inlet is equal to the minimum distance from the second end to the water outlet, and the cross-sectional areas of the flow channels of the daughter harmonica are kept consistent along the flowing direction of the cooling liquid at present.
6. The liquid cold plate of claim 1, wherein: the cross-sectional area of each flow passage in the radial direction is 1.95mm2～3.2mm2。
7. The liquid-cooled panel of any one of claims 1 to 6, wherein: the first collecting pipe is provided with a plurality of first fasteners; and/or the second collecting pipe is provided with a plurality of second fasteners.
8. The liquid-cooled panel of any one of claims 1 to 6, wherein: the first collecting pipe is provided with a first bending section bent towards the second collecting pipe, the second collecting pipe is provided with a second bending section bent towards the first bending section, and two ends of the sub-harmonica tubes are respectively communicated with the first bending section and the second bending section.
9. The liquid-cooled panel of any one of claims 1 to 6, wherein: the sub-mouth organ pipe comprises a pipe body, two opposite ends of the pipe body are bent towards the same side to form a bending part, and the bending part is connected to the first collecting pipe or the second collecting pipe.
10. A battery pack, comprising: comprising a plurality of battery modules, a separator plate and a liquid-cooled plate according to any of claims 1 to 8, said separator plate being arranged between said battery modules and said liquid-cooled plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020761563.3U CN213546416U (en) | 2020-05-08 | 2020-05-08 | Liquid cooling board and battery package |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020761563.3U CN213546416U (en) | 2020-05-08 | 2020-05-08 | Liquid cooling board and battery package |
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| CN213546416U true CN213546416U (en) | 2021-06-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629315A (en) * | 2021-07-23 | 2021-11-09 | 上汽通用汽车有限公司 | Battery pack chassis and battery pack |
| CN113707969A (en) * | 2020-05-08 | 2021-11-26 | 恒大新能源技术(深圳)有限公司 | Liquid cooling plate, battery pack and flow control method |
| CN113782860A (en) * | 2021-11-17 | 2021-12-10 | 江铃汽车股份有限公司 | Liquid cooling plate with anti-sticking agent sprayed on surface, spraying method and battery pack |
-
2020
- 2020-05-08 CN CN202020761563.3U patent/CN213546416U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113707969A (en) * | 2020-05-08 | 2021-11-26 | 恒大新能源技术(深圳)有限公司 | Liquid cooling plate, battery pack and flow control method |
| CN113629315A (en) * | 2021-07-23 | 2021-11-09 | 上汽通用汽车有限公司 | Battery pack chassis and battery pack |
| CN113782860A (en) * | 2021-11-17 | 2021-12-10 | 江铃汽车股份有限公司 | Liquid cooling plate with anti-sticking agent sprayed on surface, spraying method and battery pack |
| CN113782860B (en) * | 2021-11-17 | 2023-11-07 | 江铃汽车股份有限公司 | Liquid cooling plate with anti-sticking agent sprayed on surface, spraying method and battery pack |
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