CN213124554U - Liquid cooling plate - Google Patents

Abstract

The utility model discloses a liquid cooling board, include: the heat conducting plate, the front plug and the rear plug; the heat conducting plate is provided with a water diversion channel which penetrates through the heat conducting plate, and two ends of the heat conducting plate are respectively matched with the front plug and the rear plug; the water diversion channel comprises: the outlet of the water separating channel is communicated with the inlet of the water separating channel; the front plug is provided with a main water inlet channel, a main water outlet channel, a through inlet channel, a through outlet channel, a water inlet hole and a water outlet hole; the main water inlet channel and the main water outlet channel are respectively positioned at the two transverse ends of the front plug; the water inlet through channel is transversely arranged along the front plug and is communicated between the main water inlet channel and the water inlet branch hole, and the water inlet branch hole is communicated with the inlet of the water inlet branch channel; the through outlet passage is transversely arranged along the front plug and is communicated between the main water outlet passage and the water inlet and the water outlet hole, and the water outlet hole is communicated with the water outlet passage outlet. This scheme has realized transversely holding the liquid based on advancing through the way for get into the coolant liquid that divides the water course from dividing the water inlet and be even, in addition the single stroke design of water diversion way, thereby guaranteed that the liquid cooling plate heat dissipation is even.

Description

Liquid cooling plate

Technical Field

The utility model relates to a battery car technical field, in particular to liquid cooling board.

Background

Under the support of government policies, the battery automobile technology is mature day by day, the power battery system technology develops very rapidly, and particularly in the electric passenger car industry, the power battery system is more widely applied. With the maturity and development of the technology, the requirements on the battery box are higher and higher, and the service life is a key index of the performance of the battery system. In the working process of the power battery, a large amount of heat is generated, so that the temperature of the working environment is increased sharply, the service life of the battery is greatly shortened under the high-temperature working environment, and the danger of thermal runaway occurs, so that the power battery needs to be provided with a heat dissipation device. Aiming at the heat dissipation of a battery system, two heat dissipation forms of forced air cooling and liquid cooling are mainly adopted in the market at present, the forced air cooling heat dissipation effect is poor, the heat dissipation is uneven, the IP design of a battery box is influenced, and in comparison, the liquid cooling heat dissipation can better solve the problems.

Liquid cooling heat dissipation is adopted, a liquid cooling plate is a necessary component, and the structure of the liquid cooling plate mainly has the following types:

1. the harmonica pipe or the liquid cooling pipeline and other structural components are welded together to form a circulating water channel space;

2. the liquid cooling plate is manufactured in a die-casting and welding mode and structurally comprises a heat conducting plate and a cover plate, the heat conducting plate is manufactured through die-casting, the water channel structure is formed through die-casting, and then the cover plate is welded on the heat conducting plate to form a closed water channel space;

3. the extrusion profile is manufactured, and a plurality of extrusion profile units are formed in a welding mode. The water channel is formed by extruding a section bar with a fixed section, designing a water channel cavity, plugging two ends of the section bar, reserving a water inlet and a water outlet.

The structure of type 1 has low strength and poor reliability; the type 2 has high processing difficulty, and the water channel sealing performance is difficult to ensure; the type 3 has high structural strength, low processing difficulty, good water channel sealing performance and high reliability, but the water channel structure cannot be flexibly designed due to the fixed section of the section bar, so that the problem of uneven cooling liquid distribution is easily caused, and the problem is more serious when the area of the liquid cooling plate is larger; in addition, if the stroke of the water channel (the total length of the cooling liquid entering from the water inlet to the water outlet and being discharged) is too long, a large temperature difference occurs between the front part and the rear part of the stroke, which is not favorable for uniform heat dissipation of the liquid cooling plate.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a liquid cooling plate, can help realizing that the coolant liquid evenly distributes in the water diversion channel to this can ensure that the liquid cooling plate heat dissipation is even; in addition, the water diversion channel in the scheme is designed in a single stroke mode, so that the temperature difference between the inlet and the outlet of the water diversion channel is favorably reduced, and the uniform heat dissipation of the liquid cooling plate can be further ensured.

In order to achieve the above object, the utility model provides a following technical scheme:

a liquid cooling panel, comprising: the heat conducting plate, the front plug and the rear plug;

the heat conducting plate is provided with a through water diversion channel, and two ends of the heat conducting plate are respectively matched with the front plug and the rear plug; the water diversion channel comprises: the outlet of the branch water channel is communicated with the inlet of the branch water channel;

the front plug is provided with a main water inlet channel, a main water outlet channel, a through inlet channel, a through outlet channel, a water inlet hole and a water outlet hole;

the main water inlet channel and the main water outlet channel are respectively positioned at two transverse ends of the front plug; the inlet and through passage is transversely arranged along the front plug and is communicated between the main water inlet passage and the water inlet branch passage, and the water inlet branch passage is communicated with an inlet of the water inlet branch passage; the outlet through passage is transversely arranged along the front plug and is communicated between the main water outlet passage and the branch water outlet hole, and the branch water outlet hole is communicated with an outlet of the branch water outlet passage.

Preferably, the number of the water inlet holes is multiple, and the water inlet holes are distributed along the transverse direction of the front plug; the number of the water outlet holes is multiple, and the water outlet holes are distributed along the front plugs in the transverse direction.

Preferably, at least one of the water inlet dividing holes has a size different from that of the other water inlet dividing holes.

Preferably, the number of the branch water channels is multiple, and the branch water channels are distributed along the heat conducting plate in the transverse direction; the number of the water distributing channels is multiple, and the water distributing channels are distributed along the heat conducting plate in the transverse direction.

Preferably, each outlet of each branch water channel is provided with a water inlet notch for backflow, and the depth of each water inlet notch is gradually reduced from the outermost side to the middle.

Preferably, each inlet of the branch water outlet channel is provided with a water outlet notch for backflow, and the depth of the water outlet notch is gradually increased or kept constant from the middle to the outermost side.

Preferably, the total cross-sectional area of the water inlet branch holes is not greater than the total cross-sectional area of the water inlet branch channels.

Preferably, the front end of the front plug is provided with a front retainer for matching with the front end surface of the heat conducting plate, and the length and width of the longitudinal section of the front retainer are the same as those of the front end surface of the heat conducting plate;

and/or the rear end of the rear plug is provided with a rear limiting body matched with the rear end face of the heat conducting plate, and the length and width of the longitudinal section of the rear limiting body are the same as those of the rear end face of the heat conducting plate.

Preferably, the method further comprises the following steps: the front sealing plate and a water gap arranged on the front sealing plate;

a fixed connecting structure is arranged between the front end of the front plug and the rear end of the front sealing plate; the nozzle includes: a water inlet and a water outlet;

the water inlet and the water outlet are respectively positioned at the two transverse ends of the front sealing plate; the water inlet is communicated with the main water inlet channel; the water outlet is communicated with the main water outlet channel.

Preferably, the fixed connection structure includes: and (3) a friction stir welding structure.

According to the technical scheme, the utility model provides an among the liquid cooling plate, the coolant liquid gets into through the way through main water inlet channel, based on the flow resistance effect, makes the coolant liquid transversely be full of into through the way along controlling earlier to reach the effect of advancing through the way and transversely holding the liquid, and then can make the coolant liquid again from dividing in the balanced entering branch water channel of water inlet, and then help realizing that the coolant liquid evenly distributes in the water diversion channel to this can ensure that the liquid cooling plate heat dissipation is even; in addition, the water diversion channel in the scheme is a single-stroke water diversion channel, so that the temperature difference between the inlet and the outlet of the water diversion channel is favorably reduced, and the uniform heat dissipation of the liquid cooling plate can be further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these 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. 2 is an enlarged view A of a portion of FIG. 1;

fig. 3 is an exploded schematic view of a liquid cooling plate according to an embodiment of the present invention;

FIG. 4 is a partial enlarged view B of FIG. 3;

fig. 5 is a schematic view of an internal structure of a liquid cooling plate according to an embodiment of the present invention;

fig. 6 is a schematic view illustrating a broken internal structure of a liquid cooling plate according to an embodiment of the present invention;

FIG. 7 is a partial enlarged view C of FIG. 5;

fig. 8 is a schematic structural view of a left front plug according to an embodiment of the present invention;

fig. 9 is a partial enlarged view D of fig. 8.

Wherein, 1 is a heat conducting plate, 12 is a water dividing channel, 121 is a water dividing channel, 122 is a water dividing channel, 1211 is a water inlet notch, and 1221 is a water outlet notch; 2, a front plug, 21, a main water inlet channel, 22, a through inlet channel, 23, a water dividing hole, 24, a front retainer and 25, a water dividing hole; 3 is a front seal plate; 41 is a water inlet, and 42 is a water outlet; and 5 is a rear plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a liquid cooling plate, include: the heat conducting plate comprises a heat conducting plate 1, a front plug 2 and a rear plug 5;

the heat conducting plate 1 is provided with a water diversion channel 12 which penetrates through the heat conducting plate, and two ends of the heat conducting plate 1 are respectively matched with the front plug 2 and the rear plug 5; the water diversion passage 12 includes: the outlet of the branch water channel 121 is communicated with the inlet of the branch water channel 122; in the scheme, the water diversion channel of the heat conduction plate 1 is designed in a single-stroke mode, the stroke length of the water diversion channel is effectively shortened, the temperature difference between the inlet and the outlet of the water diversion channel is favorably reduced, and the uniform heat dissipation of the liquid cooling plate is favorably ensured;

the front plug 2 is provided with a main water inlet channel 21, a main water outlet channel, a through inlet channel 22, a through outlet channel, a water inlet and outlet hole 23 and a water outlet and outlet hole 25;

the main water inlet channel 21 and the main water outlet channel are respectively positioned at the two transverse ends of the front plug 2; the through inlet passage 22 is transversely arranged along the front plug 2 and is communicated between the main water inlet passage 21 and the water inlet dividing hole 23, and the water inlet dividing hole 23 is communicated with an inlet of the water inlet dividing channel 121; as shown in fig. 7, the through passage 22 is transversely arranged along the left and right sides of the front plug 2 (in the length direction of the front plug 2) so that the size of the through passage 22 is much larger than that of the water dividing hole 23, so as to generate a flow resistance effect, so that the through passage 22 is filled with the coolant transversely along the left and right sides based on the flow resistance effect, the through passage 22 plays a role of transversely storing the coolant, the coolant is prevented from directly entering the water dividing channel 121 from the main water inlet passage 21, the coolant is enabled to enter the water dividing channel 121 from the water dividing hole 23 in a balanced manner, and uniform distribution of the coolant in the water dividing channel 12 is facilitated;

the through outlet passage is transversely arranged along the front plug 2 and is communicated between the main water outlet passage and the water dividing outlet 25, and the water dividing outlet 25 is communicated with an outlet of the water dividing outlet 122. Similarly, a through passage is transversely arranged along the left and right of the front plug 2; furthermore, there is no communication between the in-through passage 22 and the out-through passage. Specifically, as shown in fig. 5 and 7, the working process of the scheme is as follows:

the coolant enters the through passage 22 through the main water inlet passage 21, and due to the effect of flow resistance, the through passage 22 is filled with the coolant along the left and right directions, so that the through passage 22 plays a role of transverse liquid storage, the coolant is prevented from directly entering the branch water passage 121 from the main water inlet passage 21, then the coolant flows back to the branch water passage 122 from the branch water passage 121, then the coolant flows out of the through passage to form left and right transverse confluence, and finally the coolant is discharged through the branch water outlet 25.

According to the technical scheme, the embodiment of the utility model provides an among the liquid cooling plate, the coolant liquid gets into through the main water inlet channel, based on the flow resistance effect, makes the coolant liquid transversely be full of into through the way along controlling earlier to reach the effect of advancing through the way and transversely holding the liquid, and then can make the coolant liquid divide the water inlet hole equilibrium to get into in the branch water course again, and then help realizing that the coolant liquid evenly distributes in the branch water channel to this can ensure that the liquid cooling plate heat dissipation is even; in addition, the water diversion channel in the scheme is a single-stroke water diversion channel, so that the temperature difference between the inlet and the outlet of the water diversion channel is favorably reduced, and the uniform heat dissipation of the liquid cooling plate can be further ensured.

In the present embodiment, in order to achieve uniform distribution of the cooling liquid in the multiple water distribution channels (multiple water distribution channels 121), correspondingly, as shown in fig. 8, the number of the water distribution holes 23 is multiple, and the cooling liquid is distributed along the front plug 2 in a transverse direction; of course; the number of the water outlet holes is a plurality, and the water outlet holes are distributed along the front plug 2 in the transverse direction. Of course, the number of the water dividing holes can be single, and the water dividing holes are in a structure of transverse long holes;

meanwhile, as shown in fig. 5, the number of the water distribution channels 121 is plural and is distributed along the heat conduction plate 1; the number of the water outlet channels 122 is multiple, and the water outlet channels are distributed along the heat conducting plate 1 in the transverse direction; the plurality of branch water channels 122 and the plurality of branch water channels 121 are symmetrically arranged left and right one by one; moreover, the plurality of water inlet branch channels 121 are communicated with the plurality of water inlet branch holes 23 in a one-to-one alignment manner; the plurality of water distribution channels 122 are communicated with the plurality of water distribution holes in a one-to-one alignment manner.

Further, at least one of the water inlet branching holes 23 has a size different from that of the other water inlet branching holes 23. Specifically, the size of the water inlet holes 23 is increased to increase the flow rate of the cooling liquid in the corresponding water inlet channels 112, so as to improve the heat dissipation capacity of the corresponding areas of the liquid cooling plates; similarly, the size of the water inlet holes 23 is reduced to reduce the flow rate of the cooling liquid in the corresponding water inlet channels 112, so as to reduce the heat dissipation capability of the corresponding areas of the liquid cooling plates. Namely, the size of the corresponding water inlet 23 is adjusted according to the actual heat dissipation requirement.

Specifically, as shown in fig. 5, the outlet of each of the branch water passages 121 is provided with a water inlet notch 1211 for backflow, and the depth of the water inlet notch 1211 is gradually decreased from the outermost side to the middle side. The design of this scheme is so to adjust the flow resistance of each minute water course 121 balanced, still be favorable to reducing the turbulent degree behind the coolant liquid outflow inlet 1211 simultaneously, thereby help making the balanced distribution of coolant liquid in each minute water course 121.

Furthermore, the inlet of each water outlet passage 122 is provided with a water outlet notch 1221 for receiving backflow, and the depth of the water outlet notch 1221 is sequentially increased from the middle to the outermost side, so that the flow of the cooling liquid flowing into each water outlet passage 122 is similar, that is, the cooling liquid is uniformly distributed in each water outlet passage 122, thereby ensuring the uniform heat dissipation of the liquid cooling plate on the water outlet side. Alternatively, as shown in fig. 5, the depth of the water outlet slots 1221 is constant from the middle to the outermost side, i.e., each water outlet slot 1221 is flush, which is convenient for design and manufacture, and cost control, and the uniformity of each branched water channel 122 can be achieved by other parts of the whole structure, such as the branched water channel 12 and the water inlet slot 1211.

In this aspect, in order to make the coolant liquid enter the branch water channel 121 from the branch water inlet holes 23 uniformly, accordingly, the total cross-sectional area of the branch water inlet holes 23 is not greater than the total cross-sectional area of the branch water channel 121. Of course, in the case where the number of the water inlet branch holes 23 and the water inlet branch channels 121 is plural, and the plural water inlet branch holes 23 and the plural water inlet branch channels 121 are aligned one by one, in order to achieve the above purpose, it is required that the sum of the cross-sectional areas of the respective water inlet branch channels 121 is approximately equal to or slightly larger than the sum of the cross-sectional areas of the respective water inlet branch holes 23.

In order to further optimize the above technical solution, as shown in fig. 9, the front end of the front plug 2 has a front stopper 24 for engaging with the front end surface of the heat conducting plate 1, and the length and width of the longitudinal section of the front stopper 24 are the same as those of the front end surface of the heat conducting plate 1;

and/or the rear end of the rear plug 5 is provided with a rear limiting body matched with the rear end face of the heat conducting plate 1, and the length and width of the longitudinal section of the rear limiting body are the same as those of the rear end face of the heat conducting plate 1. In this scheme, preceding end cap 2 front end is equipped with preceding retainer 24 to the contact cooperation of terminal surface before spacing terminal surface through preceding retainer 24 and heat-conducting plate 1, in order to ensure preceding end cap 2 can install and target in place, thereby has guaranteed preceding end cap 2's sealing performance. Likewise, the design principle of the rear retainer is the same as above, and the detailed description thereof is omitted.

Specifically, as shown in fig. 1 and fig. 2, the liquid cooling plate provided by the embodiment of the present invention further includes: the front sealing plate 3 and a water gap arranged on the front sealing plate 3;

a fixed connecting structure is arranged between the front end of the front plug 2 and the rear end of the front sealing plate 3, namely a fixed connecting structure is arranged between the front end of the front retainer 24 and the rear end of the front sealing plate 3; the mouth of a river includes: a water inlet 41 and a water outlet 42;

as shown in fig. 3 and 4, the water inlet 41 and the water outlet 42 are respectively positioned at two transverse ends of the front closing plate 3; the water inlet 41 is communicated with the main water inlet channel 21; the water outlet 42 is communicated with the main water outlet channel. Namely, the water inlet 41 is in contraposition communication with the main water inlet channel 21, and the water outlet 42 is in contraposition communication with the main water outlet channel. This scheme so designs, has simple structure, characteristics such as rationally distributed.

Further, the fixed connection structure includes: and (3) a friction stir welding structure. The front end face of the front retainer 24 is butted with the rear end face of the front sealing plate 3, and friction stir welding is performed on the flush face, so that the connection strength between the front plug 2 and the front sealing plate 3 is ensured, the front retainer 24 also plays a role in material supplement during friction stir welding, and the welding reliability is further improved.

The scheme is further described by combining the specific embodiment as follows:

the utility model discloses the technical problem who solves:

1. the scheme is used for solving the problem of uneven heat dissipation caused by uneven distribution of cooling liquid in a large-area liquid-loading cold plate manufactured by extruding sectional materials or overlong path.

The liquid cooling plate made of the extruded section is used, and cooling liquid enters from the water inlet and is discharged from the water outlet after passing through the water diversion channel in the liquid cooling plate. In order to ensure that the liquid cooling plate has even heat dissipation, two points need to be ensured structurally:

1) the total width of the water diversion channels is approximately equal to or slightly larger than the width of the water inlet, so that cooling liquid can be uniformly distributed in each water diversion channel after entering from the water inlet;

2) the total stroke of the water diversion channel is short, and the total length of the cooling liquid which enters from the water inlet to the water outlet and is discharged is called the stroke; if the stroke is too long, a large temperature difference occurs at the front and rear of the stroke.

And the large-area liquid-accumulating cold plate manufactured by extruding the section bar is wide in water dividing channel or too long in cooling liquid stroke, and the new scheme designed by the patent can avoid the problem.

2. The sealing structure of the extruded profile liquid cooling plate is improved, and the sealing reliability of the liquid cooling plate is guaranteed.

The utility model discloses technical scheme detailed description:

the liquid cooling plate consists of a heat conducting plate 1, a front plug 2, a rear plug 5, a front sealing plate 3 and a water gap.

The heat conducting plate 1 is made of an extruded section, can be formed at one time and can be formed by welding a plurality of units, and a through space is arranged in the middle of the heat conducting plate 1, namely the water diversion channel 12.

The front plug 2 and the rear plug 5 are inserted at two ends of the heat conducting plate 1, the front sealing plate is in butt joint with the front plugs, and stirring friction welding is carried out on the flush surface; the front plug 2 and the rear plug 5 are provided with limiting bodies, the length and width of each limiting body are the same as the outermost contour dimension of the longitudinal section of the heat conducting plate 1, the limiting bodies can ensure that the plugs are installed in place, the sealing performance is guaranteed, and meanwhile, the material supplementing effect is achieved during friction stir welding, so that the welding reliability is improved; in addition, the heat conducting plate 1 is independently sealed by the plugs in the front and at the back, so that the stress concentration at the sealing position can be reduced, the reliability of welding sealing is improved, and meanwhile, the sealing performance detection in the production process is facilitated.

The heat-conducting plate can be formed by splicing a plurality of heat-conducting plate units through extrusion processing. The heat conducting plate is hollow, and a plurality of through water diversion channels 12 are formed; the rear part of the water diversion channel 12 is provided with a notch, the depth of the notch increases from two sides to the middle, and the flow resistance and staggered liquid cooling level of each water diversion channel 12 can be changed by adjusting the depth size of the notch, so that the circulating reflux of cooling liquid is facilitated, and the flow of the cooling liquid in each water diversion channel is balanced. The water diversion channel of the heat conduction plate 1 comprises two parts, one part is arranged on the water inlet side, the other part is arranged on the water outlet side, and the two parts are symmetrical relative to the middle.

The water port comprises a water inlet 41 and a water outlet 42 which are arranged on the front sealing plate 3, and cooling liquid flows in through the water inlet 41 and is discharged from the water outlet 42;

the front plug 2 is divided into two parts, one part is arranged at the water inlet side, the other part is arranged at the water outlet side, and the through passages of the two parts are not communicated. The front plug 2 is provided with a main water channel, the position of the main water channel corresponds to the water inlet or the water outlet, a through channel is arranged in the middle of the front plug 2, the front plug 2 is communicated in the length direction, the position of a water diversion hole is arranged on the opposite side of the limiting body and corresponds to each water diversion channel of the heat conduction plate 1, the size of each water diversion hole is different, and the flow entering each water diversion channel can be changed by adjusting the size of each water diversion hole.

The coolant enters from the water inlet 41 and enters the through passage 22 through the main water inlet passage 21, the through passage 22 plays a role of storing liquid, the coolant is prevented from directly entering the branch water channel 121 from the water inlet 41 or the main water inlet passage 21, the coolant can fill the through passage 22 due to the flow resistance, then enters the branch water channel 121 through the branch water inlet holes 23, then flows back through the water inlet notches 1211, then flows through the branch water outlet channels 122 on the water outlet side, converges in the through passage on the water outlet side, and finally is discharged through the water outlet 42.

The flow that the coolant liquid got into each minute water course 121 is adjusted through advancing through the way 22 and dividing into water hole 23, if do not have this structure, when the total width of water course was too big, the coolant liquid that gets into from water inlet 41 will unable the equilibrium get into each minute water course 121, under the help of this structure, the total width of water course is unrestricted, when designing the large-area hydrops cold drawing, also need not to design a plurality of circulation strokes, can reduce total stroke length to be favorable to reducing the difference in temperature.

The utility model discloses an innovation point:

1. the depth gradient design of the notch of the heat conducting plate 1 is that the depth gradient design is gradually decreased from the water inlet side to the middle, and the depth gradient design is sequentially increased or kept unchanged from the middle to the water outlet side;

2. a through passage 22 is designed in the front plug 2, water inlet holes 23 are designed on the back of the front plug (2), the water inlet holes 23 face the water inlet channels 121 respectively in sequence, and the sizes of the water inlet holes 23 are different; can be adjusted according to the actual heat dissipation requirement; the front plug 2 is provided with a main water inlet channel 21 which is in butt joint with the water inlet 41;

3. designing a front plug 2 and a rear plug 5 to seal the liquid cooling plate independently;

4. the front plug 2 and the rear plug 5 are provided with limiting bodies;

the utility model has the advantages that:

1. the depth of the water inlet notch 1211 on the water inlet side is gradually reduced towards the middle, so that the flow resistance of each branch water channel 121 can be adjusted to be close, the disorder degree of the cooling liquid flowing out of the water inlet notch 1211 is reduced, and the flow resistance of each branch water channel 121 can be balanced; the depths of the water outlet notches 1221 on the water outlet side are sequentially increased, so that the flow rates of the cooling liquid flowing into the branch water outlets 122 on the water outlet sides are similar;

2. the through passage 22 and the water inlet holes 23 enable the cooling liquid to uniformly flow into the water inlet channels 121, so that the uniform heat dissipation effect of the liquid cooling plate is ensured; meanwhile, if the heat dissipation capacity of a certain area needs to be improved, the size of a certain water inlet 23 can be increased, so that the flow rate of the cooling liquid in the corresponding water inlet channel 121 is increased, and similarly, if the heat dissipation capacity of a certain area needs to be reduced, the size of the corresponding water inlet 23 can be reduced, and the design of the through passage 22 and the water inlet 23 enables the heat dissipation of the liquid cooling plate to be more uniform and flexible; meanwhile, the number of the water diversion channels 12 on the water inlet side and the water outlet side can be increased, namely the width of the liquid cooling plate can be increased;

3. the front plug 2 and the rear plug 5 are used for independently sealing the liquid cooling plate, so that the sealing parts at two ends of the liquid cooling plate are prevented from being subjected to concentrated stress, the long-term reliability of the sealing performance is ensured, and the sealing performance of the liquid cooling plate is conveniently detected in the production process;

4. the front plug 2 and the rear plug 5 are provided with limiting bodies, so that the installation of the plugs can be ensured to be in place, and the sealing performance of the plugs can be ensured.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A liquid cooling panel, comprising: the heat conduction plate (1), the front plug (2) and the rear plug (5);

the heat-conducting plate (1) is provided with a water diversion channel (12) which penetrates through the heat-conducting plate, and two ends of the heat-conducting plate (1) are respectively matched with the front plug (2) and the rear plug (5); the water diversion channel (12) comprises: the water inlet and outlet device comprises a water inlet channel (121) and a water outlet channel (122), wherein the outlet of the water inlet channel (121) is communicated with the inlet of the water outlet channel (122);

the front plug (2) is provided with a main water inlet channel (21), a main water outlet channel, a through inlet channel (22), a through outlet channel, a water inlet and outlet hole (23) and a water outlet and outlet hole (25);

the main water inlet channel (21) and the main water outlet channel are respectively positioned at two transverse ends of the front plug (2); the inlet and through passage (22) is transversely arranged along the front plug (2) and is communicated between the main water inlet passage (21) and the water inlet dividing hole (23), and the water inlet dividing hole (23) is communicated with an inlet of the water inlet dividing channel (121); the through passage is transversely arranged along the front plug (2) and is communicated between the main water outlet passage and the water dividing holes (25), and the water dividing holes (25) are communicated with the outlets of the water dividing passages (122).

2. The liquid cold plate according to claim 1, wherein said inlet holes (23) are provided in a plurality and are distributed transversely along said front plugs (2); the number of the water distributing holes is multiple, and the water distributing holes are distributed along the front plugs (2) in the transverse direction.

3. The liquid cooling plate of claim 2, wherein at least one of the water inlet branch holes (23) has a size different from the other water inlet branch holes (23).

4. The liquid-cooled plate of claim 1, wherein said partial water channels (121) are plural in number and distributed transversely along said thermally conductive plate (1); the number of the water distributing channels (122) is multiple, and the water distributing channels are distributed along the heat conducting plate (1) in the transverse direction.

5. The liquid cooling plate as claimed in claim 4, wherein the outlet of each branch water channel (121) is provided with a water inlet notch (1211) for backflow, and the depth of the water inlet notch (1211) is gradually decreased from the outermost side to the middle side.

6. The liquid cooling plate according to claim 4, characterized in that the inlet of each of the branch water outlet channels (122) is provided with a water outlet notch (1221) for backflow, and the depth of the water outlet notch (1221) is gradually increased or kept constant from the middle to the outermost side.

7. The liquid cooling plate of claim 1, wherein a total cross-sectional area of the water inlet branch holes (23) is not greater than a total cross-sectional area of the water inlet branch channels (121).

8. A liquid-cooled plate according to claim 1, wherein the front end of the front plug (2) has a front retainer (24) for engaging with the front end surface of the heat-conducting plate (1), and the longitudinal section of the front retainer (24) has the same length and width dimensions as those of the front end surface of the heat-conducting plate (1);

and/or the rear end of the rear plug (5) is provided with a rear limiting body matched with the rear end face of the heat-conducting plate (1), and the length and width of the longitudinal section of the rear limiting body are the same as those of the rear end face of the heat-conducting plate (1).

9. The liquid cold plate of claim 1, further comprising: the front sealing plate (3) and a water gap arranged on the front sealing plate (3);

a fixed connecting structure is arranged between the front end of the front plug (2) and the rear end of the front sealing plate (3); the nozzle includes: a water inlet (41) and a water outlet (42);

the water inlet (41) and the water outlet (42) are respectively positioned at two transverse ends of the front sealing plate (3); the water inlet (41) is communicated with the main water inlet channel (21); the water outlet (42) is communicated with the main water outlet channel.

10. The liquid cold plate of claim 9, wherein said fixed connection structure comprises: and (3) a friction stir welding structure.

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