Connector, liquid cooling plate and liquid cooling box

Abstract

The utility model provides a joint, a liquid cooling plate and a liquid cooling box, the joint is fixed on the liquid cooling plate and is used for inputting or outputting a cooling medium inwards, and the joint comprises a liquid separation seat and a sealing end. The liquid separation seat is fixed with the liquid cooling plate and comprises a throttling opening, and a first sub-runner and a second sub-runner which are communicated with the throttling opening and the liquid cooling plate; the sealing end is fixed to the liquid separation base and comprises a liquid inlet flow channel communicated with the throttling opening. According to the utility model, the liquid separation seat and the sealing end form the joint, when a cooling medium enters the liquid cooling plate from the joint, the cooling medium passes through the throttling opening from the liquid inlet flow channel and then is shunted to enter the first branch flow channel and the second branch flow channel, so that the cooling medium can enter the liquid cooling plate in a high-pressure and high-efficiency manner, and the throttling opening can effectively control the inlet flow so as to achieve a uniform shunting effect; and the flow on two sides of the cold plate is uniform, so that the heat dissipation effect is consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries and energy storage, in particular to a joint, a liquid cooling plate and a liquid cooling box. Background Art

[0002] In the existing technology, the battery module is one of the core components of the energy storage battery pack. The performance of the battery is an important indicator of energy storage, and the activity of new energy batteries is significantly affected by temperature. The characteristics determine that the most suitable operating temperature is between 20-40°C. Due to increasingly fierce competition, the energy storage industry has repeatedly increased the energy density requirements of battery packs, that is, the increase in battery capacity and power, which in turn results in greater heat generation.

[0003] Existing battery thermal management technology uses liquid cooling for heat exchange. However, once the power of the battery cell exchanged by the liquid cooling plate is increased again, the liquid cooling will not be able to take away the heat in time; or there is too much heat, causing the coolant temperature to rise too quickly, eventually leading to a large temperature difference between the inlet and outlet of the battery; in addition, the capacity of the battery will also decrease in some low temperature environments, which will lead to a decrease in power, and in the long run, the battery capacity, efficiency, and life will be reduced.

[0004] Therefore, it is necessary to provide a joint, a liquid cooling plate and a liquid cooling box to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to provide a joint, a liquid cooling plate and a liquid cooling box.

[0006] According to one aspect of the utility model, a joint is provided, which is fixed on a liquid cooling plate for inputting or outputting a cooling medium, comprising:

[0007] A liquid distributing seat, the liquid distributing seat is fixed to the cold plate, and the liquid distributing seat comprises a throttle port and a first flow channel and a second flow channel connecting the throttle port and the liquid cold plate;

[0008] A sealing end head is fixed on the liquid separation seat, and the sealing end head comprises a liquid inlet channel connected with the throttling port.

[0009] Preferably, the liquid separation seat includes a mounting groove for the sealing end to pass through, the throttle port is located at the bottom of the mounting groove, and the first branch channel and the second branch channel are extended downward from the throttle port.

[0010] Preferably, the liquid dispensing seat further comprises connecting blind holes arranged on both sides of the mounting groove, and the connecting blind holes are distributed along the length direction of the liquid dispensing seat.

[0011] Preferably, the sealing end includes an end body and a sealing portion extending downward from the middle of the end body, the sealing portion is arranged in the mounting groove, and the liquid inlet channel is arranged in the sealing portion and vertically passes through the sealing portion and the end body.

[0012] Preferably, the end head body is provided with a connecting through hole coaxially arranged with the connecting blind hole, and the sealing end head is fastened to the liquid dispensing seat by inserting a connecting piece into the corresponding connecting through hole and the connecting blind hole.

[0013] Preferably, the sealing portion is cylindrical, and a plurality of annular grooves distributed along the axial direction are formed on the outer surface of the circumference thereof, and a sealing ring is provided in the annular groove.

[0014] Preferably, the first branch channel is inclined downward from the throttle port, the second branch channel is inclined downward from the throttle port, and the first branch channel and the second branch channel are symmetrically arranged about the central axis of the throttle port.

[0015] According to another aspect of the utility model, a liquid cooling plate is provided, comprising the above-mentioned joint and a cooling plate body, wherein the cooling plate body comprises a plane plate and a flow channel plate disposed below the plane plate and stacked with the plane plate, wherein the flow channel plate comprises a pipeline portion formed by protruding downward, and the pipeline portion and the plane plate constitute a cooling flow channel;

[0016] The liquid separation seat is fixed to the flat plate, and the first flow branch channel and the second flow branch channel are connected to the throttling port and the cooling flow channel.

[0017] Preferably, the pipeline portion includes a first pipeline portion and a second pipeline portion, the first pipeline portion is located on one side of the center line in the length direction of the flow channel plate, and the second pipeline portion is located on the other side of the center line in the length direction of the flow channel plate, the first pipeline portion and the second pipeline portion are symmetrically distributed about the center line, the first branch channel is connected to the first pipeline portion, and the second branch channel is connected to the second pipeline portion.

[0018] Preferably, two of the joints are fixed on the flat plate, namely a liquid inlet joint and a liquid outlet joint, and both are connected to the cooling channel. The diameter of the throttle opening of the liquid outlet joint is larger than the diameter of the throttle opening of the liquid inlet joint, and the diameter of the liquid outlet channel of the liquid outlet joint is larger than the diameter of the liquid inlet channel of the liquid inlet joint.

[0019] Preferably, it also includes:

[0020] A longitudinal beam assembly, wherein the longitudinal beam assembly is extended along the length direction of the cold plate body;

[0021] A crossbeam assembly is provided extending along the width direction of the cold plate body.

[0022] According to another aspect of the utility model, a liquid cooling box is provided, characterized in that it includes the liquid cooling plate mentioned above, and a box body covering the liquid cooling plate.

[0023] Compared with the prior art, the joint, liquid cooling plate and liquid cooling box provided by the utility model have the following beneficial effects:

[0024] Due to the adoption of the above-mentioned technical scheme, the utility model has the advantages of simple structure, ingenious design and low cost. The liquid inlet joint is formed by the liquid separator seat and the sealing end head. When the cooling medium enters the liquid cooling plate from the liquid inlet joint, the liquid inlet flow channel passes through the throttle port and is then diverted into the first diversion channel and the second diversion channel, thereby achieving high pressure and high efficiency entry into the liquid cooling plate. The throttle port can effectively control the inlet flow rate to achieve a uniform diversion effect, so that the flow on both sides of the cold plate is uniform and the heat dissipation effect is consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] Figure 1 The three-dimensional liquid cooling plate of the utility model Figure 1 ;

[0027] Figure 2 This is a front view of the liquid cooling plate of the utility model;

[0028] Figure 3 for Figure 2 The cross-sectional view of the AA surface;

[0029] Figure 4 It is an exploded view of the liquid inlet connector of the utility model;

[0030] Figure 5 It is a front view of the flow channel plate of the utility model;

[0031] Figure 6 The three-dimensional liquid cooling plate of the utility model Figure 2 ;

[0032] Figure 7 It is a three-dimensional diagram of the liquid cooling box of the present utility model.

[0033] Among them, 1. cold plate body, 11. plane plate, 12. flow channel plate, 121. pipeline part, a. first pipeline part, b. second pipeline part, 2. longitudinal beam assembly, 21. first longitudinal beam, 22. second longitudinal beam, 3. beam assembly, 31. first beam, 32. second beam, 33. reinforcing beam, 4. joint, 4a. liquid inlet joint, 4b. liquid outlet joint, 41. liquid separation seat, 411. mounting groove, 412. throttle port, 413. first branch channel, 414. second branch channel, 415. connecting blind hole, 42. sealing end, 421. end body, 422. sealing part, 4221. annular groove, 423. liquid inlet channel, 424. connecting through hole, 5. box body. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0036] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0037] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0040] Example 1

[0041] See also Figures 1 to 4 The present embodiment discloses a connector 4, which is fixed on the liquid cooling plate for inputting or outputting cooling medium, and includes a liquid separator 41 and a sealing end 42. The liquid separator 41 is fixed to the cooling plate, and includes a throttle port 412 and a first branch channel 413 and a second branch channel 414 connecting the throttle port 412 and the liquid cooling plate. The sealing end 42 is fixed on the liquid separator 41, and includes a liquid inlet channel 423 connected to the throttle port 412.

[0042] The liquid separator 41 includes a mounting groove 411 for the sealing end 42 to pass through, and the mounting groove 411 is provided in the middle of the liquid separator 41 and is in the shape of a cylindrical body that is recessed inward. A throttle port 412 is located at the bottom of the mounting groove 411, and the diameter of the throttle port 412 is smaller than the diameter of the mounting groove 411. A first branch channel 413 and a second branch channel 414 extend downward from the throttle port 412. The liquid separator 41 also includes connecting blind holes 415 provided on both sides of the mounting groove 411, and the connecting blind holes 415 are distributed along the length direction of the liquid separator.

[0043] The sealing end 42 includes an end body 421 and a sealing portion 422 extending downward from the middle of the end body 421. The sealing portion 422 is disposed in the mounting groove 411, and the liquid inlet channel 423 is disposed in the sealing portion 422 and vertically penetrates the sealing portion 422 and the end body 421.

[0044] The end body 421 is provided with a connecting through hole 424 coaxially arranged with the connecting blind hole 415, and the sealing end 42 is fastened to the liquid dispensing seat 41 by passing the connecting piece through the corresponding connecting through hole 424 and the connecting blind hole 415. The connecting piece in this embodiment is a bolt, and in other embodiments, other forms of connecting pieces or connecting methods can be used to fix the sealing end 42 to the liquid dispensing seat 41.

[0045] The sealing part 422 is cylindrical, and a plurality of annular grooves 4221 distributed along the axial direction are formed on the outer surface of the peripheral side thereof, and a sealing ring (not shown in the figure) is arranged in the annular groove 4221. The sealing ring is arranged in the annular groove 4221, and its outer portion is pressed and contacted with the inner wall of the mounting groove 411 to seal the gap between the sealing part 422 and the mounting groove 411.

[0046] The first branch channel 413 and the second branch channel 414 are both extended downward from the throttle port 412 and their top ends meet at the throttle port 412. The first branch channel 413 is extended downwardly from the throttle port 412 and the second branch channel 414 is inclined downwardly from the throttle port 412. The first branch channel 413 and the second branch channel 414 are symmetrically arranged about the central axis of the throttle port 412.

[0047] See also Figures 1 to 6 The present embodiment further provides a liquid cooling plate, which includes a cooling plate body 1, a longitudinal beam assembly 2, a cross beam assembly 3 and two of the above-mentioned joints 4. The cooling plate body 1 includes a plane plate 11 and a flow channel plate 12 disposed below the plane plate 11 and stacked with the plane plate 11. The flow channel plate 12 includes a pipe portion 121 formed by a downward protrusion, and the pipe portion 121 and the plane plate 11 constitute a cooling flow channel. The longitudinal beam assembly 2 is extended along the length direction of the cooling plate body 1, and the cross beam assembly 3 is extended along the width direction of the cooling plate body 1.

[0048] The liquid separation seat 41 is fixed to the flat plate 11 , and the first branch flow channel 413 and the second branch flow channel 414 are connected to the throttle port 412 and the cooling flow channel.

[0049] When the cooling medium enters the cold plate body 1 from the liquid inlet joint 4, it is diverted from the liquid inlet channel 423 through the throttle port 412 into the first diverter channel 413 and the second diverter channel 414, so that it can enter the cold plate body 1 with high pressure and high efficiency. The throttle port 412 can effectively control the inlet flow rate to achieve a uniform diversion effect, so that the flow on both sides of the cold plate is uniform and the heat dissipation effect is consistent. At the same time, the joint serves as a diversion body, and a liquid inlet channel 423 is designed to flow into the liquid inlet joint and then be divided into multiple channels to flow out; a throttle port 412 is added between the liquid inlet channel 423 and the multiple liquid diversion channels (because the liquid cold plate medium is a refrigerant, there will be a gas-liquid mixture at the liquid inlet channel 423. If there is no throttle port 412, it is difficult to control the flow diversion phenomenon of the liquid inlet channel 423), which effectively controls the inlet flow rate, thereby achieving uniform multi-branch outlet flow.

[0050] See also Figure 5 In this embodiment, the pipeline portion 121 includes a first pipeline portion a and a second pipeline portion b, the first pipeline portion a is located on one side of the center line L in the length direction of the flow channel plate 12, and the second pipeline portion b is located on the other side of the center line L in the length direction of the flow channel plate 12. The first pipeline portion a and the second pipeline portion b are symmetrically distributed about the center line L, the first branch flow channel 413 is connected to the first pipeline portion a, and the second branch flow channel 414 is connected to the second pipeline portion b.

[0051] The two joints 4 fixed on the plane plate 11 are the liquid inlet joint 4a and the liquid outlet joint 4b, and are both connected to the cooling flow channel. The diameter of the throttle port of the liquid outlet joint 4b is larger than the diameter of the throttle port 412 of the liquid inlet joint 4a, and the diameter of the liquid outlet flow channel of the liquid outlet joint 4b is larger than the diameter of the liquid inlet flow channel 423 of the liquid inlet joint 4a. It is ensured that the pressure at the liquid inlet joint 4 is greater than the pressure at the liquid outlet joint 5.

[0052] In other embodiments, according to actual needs, the pipeline part 121 may include more than two parts. At the same time, a corresponding number of branch channels are also provided in the liquid inlet joint 4a to communicate with each part of the pipeline part 121, so as to achieve uniform flow distribution of multi-branch outlets, so that the flow of each flow channel part of the liquid cooling plate is uniform, so that the heat dissipation effect is consistent and the heat dissipation efficiency is higher. At the same time, a corresponding number of branch channels are also provided in the liquid outlet joint 4b to communicate with each part of the pipeline part 121, so that the liquid is discharged more smoothly and the temperature difference between the inlet and outlet is not too large.

[0053] The longitudinal beam assembly 2 is arranged at the bottom of the flow channel plate 12, and includes a first longitudinal beam 21 and a second longitudinal beam 22 arranged on both sides of the cold plate body 1 in the width direction. The cross beam assembly 3 is arranged at the bottom of the longitudinal beam assembly 2, and includes a first cross beam 31 and a second cross beam 32 arranged on both sides of the cold plate body 1 in the length direction, and two reinforcing beams 33 located between the first cross beam 31 and the second cross beam 32. The arrangement of the longitudinal beam assembly 2 and the cross beam assembly 3 makes the liquid cold plate more stable and has a stronger load-bearing effect.

[0054] The liquid cooling plate in this embodiment uses a phase change medium with ultra-high thermal conductivity to perform phase change heat transfer on the battery module, thereby achieving instantaneous heat conversion and meeting the heat dissipation requirements of the high-power battery module. At the same time, the heating function can be realized to heat the battery module from a low temperature environment to a normal temperature state for operation, thereby avoiding the phenomenon of reduced battery capacity and reduced power caused by working in a low temperature environment, thereby increasing the storage and power upper limits of the battery module and allowing the energy density of the battery pack to reach a higher level.

[0055] See also Figure 7 This embodiment also discloses a liquid cooling box, including the above-mentioned liquid cooling plate and a box body 5 covering the liquid cooling plate.

[0056] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A joint fixed on a liquid cooling plate for inputting or outputting a cooling medium, characterized in that: include: A liquid distributing seat, the liquid distributing seat is fixed to the cold plate, and the liquid distributing seat comprises a throttle port and a first flow channel and a second flow channel connecting the throttle port and the liquid cold plate; A sealing end head is fixed on the liquid separation seat, and the sealing end head comprises a liquid inlet channel connected with the throttling port.

2. The joint according to claim 1, characterized in that The liquid separation seat comprises a mounting groove for the sealing end to pass through, the throttle opening is located at the bottom of the mounting groove, and the first branch flow channel and the second branch flow channel are extended downward from the throttle opening.

3. The joint according to claim 2, characterized in that The liquid dispensing seat further comprises connecting blind holes arranged on both sides of the mounting groove, and the connecting blind holes are distributed along the length direction of the liquid dispensing seat.

4. The joint according to claim 3, characterized in that The sealing end head comprises an end head body and a sealing portion extending downward from the middle of the end head body, the sealing portion is arranged in the mounting groove, and the liquid inlet channel is arranged in the sealing portion and vertically penetrates the sealing portion and the end head body.

5. The joint according to claim 4, characterized in that The end head body is provided with a connecting through hole coaxially arranged with the connecting blind hole, and the sealing end head is fastened to the liquid separation seat by inserting a connecting piece into the corresponding connecting through hole and the connecting blind hole.

6. The joint according to claim 5, characterized in that The sealing part is cylindrical, and a plurality of annular grooves distributed along the axial direction are formed on the outer surface of the peripheral side of the sealing part, and a sealing ring is arranged in the annular groove.

7. The joint according to claim 6, characterized in that The first flow branch channel is tilted downward from the throttle port, the second flow branch channel is tilted downward from the throttle port, and the first flow branch channel and the second flow branch channel are symmetrically arranged about the central axis of the throttle port.

8. A liquid cooling plate, comprising the joint according to any one of claims 1 to 7, and a cooling plate body, characterized in that: The cold plate body comprises a plane plate and a flow channel plate disposed below the plane plate and stacked with the plane plate, the flow channel plate comprises a pipeline portion protruding downward, and the pipeline portion and the plane plate constitute a cooling flow channel; The liquid separation seat is fixed to the flat plate, and the first flow branch channel and the second flow branch channel are connected to the throttling port and the cooling flow channel.

9. The liquid cooling plate according to claim 8, characterized in that: The pipeline portion includes a first pipeline portion and a second pipeline portion, the first pipeline portion is located on one side of the centerline of the centerline in the length direction of the flow channel plate, and the second pipeline portion is located on the other side of the centerline of the centerline in the length direction of the flow channel plate, the first pipeline portion and the second pipeline portion are symmetrically distributed about the centerline, the first branch channel is connected to the first pipeline portion, and the second branch channel is connected to the second pipeline portion.

10. The liquid cooling plate according to claim 9, characterized in that: Two joints are fixed on the flat plate, namely a liquid inlet joint and a liquid outlet joint, and both are connected to the cooling channel. The diameter of the throttle opening of the liquid outlet joint is larger than the diameter of the throttle opening of the liquid inlet joint, and the diameter of the liquid outlet channel of the liquid outlet joint is larger than the diameter of the liquid inlet channel of the liquid inlet joint.

11. The liquid cooling plate according to claim 10, wherein: Also includes: A longitudinal beam assembly, wherein the longitudinal beam assembly is extended along the length direction of the cold plate body; A crossbeam assembly is provided extending along the width direction of the cold plate body.

12. A liquid cooling box, characterized in that: It comprises the liquid cooling plate as claimed in any one of claims 8 to 11, and a box body covering the liquid cooling plate.

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