A liquid cooling heat dissipation device applied to power energy storage

Abstract

The application relates to the technical field of battery heat dissipation, and discloses a liquid cooling heat dissipation device applied to power energy storage, which comprises a liquid storage tank, cooling plates, a first liquid inlet pipe, a second liquid inlet pipe, liquid distribution pipes, a circulating pump and liquid delivery pipes; the circulating pump is used for respectively delivering the cooling liquid in the liquid storage tank to the first liquid inlet pipe and the second liquid inlet pipe through the liquid delivery pipes; a plurality of cooling plates are arranged on the top of the liquid storage tank; one liquid distribution pipe is arranged above each cooling plate in a one-to-one correspondence mode, one end of the liquid distribution pipe is communicated with the first liquid inlet pipe, and the other end is communicated with the second liquid inlet pipe; a plurality of flow channels are arranged in the middle of the cooling plate; the upper end of each flow channel is communicated with the corresponding liquid distribution pipe, and the lower end of each flow channel is communicated with the liquid storage tank; the energy storage battery is arranged on the liquid storage tank, and the two sides of the energy storage battery are in adhering contact with the cooling plates. The technical scheme can effectively increase the contact area of the energy storage battery and the cooling plates, thereby improving the heat dissipation effect of the energy storage battery.

Description

Technical Field

[0001] The present invention relates to the technical field of battery heat dissipation, and in particular to a liquid cooling heat dissipation device applied to electric energy storage. Background Art

[0002] Energy storage batteries are devices specifically designed to store electrical energy. They can be charged when there is excess electricity and released when needed, improving energy efficiency, promoting the integration of renewable energy, and enhancing grid stability. Therefore, energy storage batteries play a key role in modern energy systems. Energy storage batteries generate a large amount of heat when charging or discharging. This, combined with the tight spacing of the batteries, can cause the temperature within the battery pack to rise rapidly. The ambient temperature of the energy storage battery, as well as the battery's own temperature, directly affects its normal operation and cycle life, and can even pose a safety hazard. Therefore, the heat dissipation of the energy storage system is a key factor in determining its performance, safety, and lifespan.

[0003] The mainstream heat dissipation methods for energy storage batteries are air cooling and liquid cooling. Air cooling mainly relies on air supply components such as cooling fans, but fans and other components are large in size and are often greatly restricted when used. Compared with air cooling, liquid cooling has higher applicability in battery heat dissipation. Liquid cooling mostly uses a cooling plate fitted to the battery for heat dissipation. The existing liquid cooling solution usually arranges the cooling plate at the bottom of the battery. Due to the small contact area between the two, the heat dissipation effect is not ideal, and due to the unreasonable arrangement of the cooling pipes in the cooling plate, it is easy to cause uneven heat dissipation of the battery module, resulting in local overheating. Therefore, the present invention proposes a liquid cooling device for electric energy storage to improve the heat dissipation effect of energy storage batteries. Summary of the Invention

[0004] The main purpose of the present invention is to provide a liquid cooling device for electric energy storage, so as to improve the heat dissipation effect of the energy storage battery.

[0005] To achieve the above-mentioned purpose, the liquid cooling heat dissipation device for electric energy storage proposed by the present invention includes a liquid storage tank, a cooling plate, a first liquid inlet pipe, a second liquid inlet pipe, a liquid distribution pipe, a circulation pump and a liquid infusion pipe; both ends of the first liquid inlet pipe and the second liquid inlet pipe are closed, and the circulation pump is used to transport the cooling liquid in the liquid storage tank to one end of the first liquid inlet pipe and one end of the second liquid inlet pipe respectively through the liquid infusion pipe; the number of the cooling plates is multiple, and the multiple cooling plates are arranged in parallel and at equal intervals on the top of the liquid storage tank; the first liquid inlet pipe and the second liquid inlet pipe are respectively arranged vertically at the two ends of the cooling plate; a plurality of first liquid inlet holes are arranged at equal intervals on one side of the first liquid inlet pipe, and a plurality of second liquid inlet holes are arranged at equal intervals on one side of the second liquid inlet pipe, and the first liquid inlet hole and the second liquid inlet hole are arranged at equal intervals. The liquid inlet holes correspond to each other one by one and are directly opposite to each other; a liquid distribution tube is correspondingly arranged directly above each of the cooling plates, one end of the liquid distribution tube is connected to one of the first liquid inlet holes, and the other end of the liquid distribution tube is connected to one of the corresponding second liquid inlet holes, so that the first liquid inlet tube and the second liquid inlet tube are respectively connected to each of the liquid distribution tubes; a plurality of flow channels are opened at equal intervals through the middle of the cooling plate, the upper end of each flow channel is connected to the corresponding liquid distribution tube, and the lower end of each flow channel is connected to the liquid storage tank, so that the coolant can flow from the liquid distribution tube through the cooling plate to the liquid storage tank; the energy storage battery is arranged on the liquid storage tank, and the energy storage battery is located between two adjacent cooling plates, and the two sides of the energy storage battery are respectively in contact with the two adjacent cooling plates.

[0006] Preferably, the liquid separation tube is perpendicular to the first liquid inlet tube and the second liquid inlet tube respectively; a plurality of liquid separation holes are evenly spaced at the bottom of the liquid separation tube, the liquid separation holes correspond to the flow channels one by one, and each of the liquid separation holes is connected to the corresponding flow channel.

[0007] Preferably, a plurality of groups of liquid outlet holes are provided on the top of the liquid storage tank, and one group of the liquid outlet holes corresponds to one of the cooling plates; each group of the liquid outlet holes includes a plurality of the liquid outlet holes arranged at equal intervals, and the liquid outlet holes correspond one-to-one to the flow channels, and each of the liquid outlet holes is connected to the corresponding flow channel.

[0008] Preferably, the circulation pump is arranged in the liquid storage tank; the circulation pump includes a first circulation pump and a second circulation pump; the infusion tube includes a first infusion tube and a second infusion tube; one end of the first infusion tube is connected to the output end of the first circulation pump, and the other end of the first infusion tube is connected to one end of the first infusion tube; one end of the second infusion tube is connected to the output end of the second circulation pump, and the other end of the second infusion tube is connected to one end of the second infusion tube; the first infusion tube and the second infusion tube are respectively located on opposite sides of the liquid storage tank.

[0009] Preferably, the first liquid inlet pipe and the second liquid inlet pipe are both connected to the top of the cooling plate; both ends of the liquid separator are open, and the liquid separator is located between the first liquid inlet pipe and the second liquid inlet pipe, one end of the liquid separator abuts the first liquid inlet pipe, and the other end of the liquid separator abuts the second liquid inlet pipe, so that the two ends of the liquid separator are connected to the first liquid inlet hole and the second liquid inlet hole respectively.

[0010] Preferably, the first liquid inlet hole is located at an upper portion of the first liquid inlet pipe on a side close to the second liquid inlet pipe; the second liquid inlet hole is located at an upper portion of the second liquid inlet pipe on a side close to the first liquid inlet pipe.

[0011] Preferably, one side of the liquid storage battery abuts against one side of the first liquid inlet pipe, and the other opposite side of the energy storage battery abuts against one side of the second liquid inlet pipe.

[0012] Preferably, a placement groove is provided on the top of the liquid storage tank, and the placement groove is arranged between two adjacent cooling plates; the two opposite inner walls of the placement groove are flush with the side walls of the two adjacent cooling plates; when the energy storage battery is embedded in the placement groove, the four side walls of the energy storage battery can fit in contact with the four inner walls of the placement groove.

[0013] Preferably, the first liquid inlet pipe, the second liquid inlet pipe and the liquid distribution pipe are all square tubes; the other two opposite inner side walls of the placement groove are flush with one side of the first liquid inlet pipe and one side of the second liquid inlet pipe respectively.

[0014] Preferably, the width of the liquid dispensing tube is consistent with the width of the cooling plate.

[0015] The circulating pump drives the cooling liquid to enter the first liquid inlet pipe and the second liquid inlet pipe from the liquid storage tank, and then enter the distribution pipe from the first liquid inlet pipe and the second liquid inlet pipe, the distribution pipe is communicated with the upper end of the flow channel of the cooling plate, and the lower end of the flow channel is communicated with the top of the liquid storage tank, the cooling liquid flows through the cooling plate and returns to the liquid storage tank, the energy storage battery is arranged on the liquid storage tank, and the two sides of the energy storage battery are respectively in contact with an adjacent cooling plate, therefore, the cooling plate and the liquid storage tank can increase the heat dissipation area of the energy storage battery, the heat generated by the energy storage battery is taken away from the two sides and the bottom, thereby improving the heat dissipation effect of the energy storage battery, and one cooling plate can dissipate heat for two energy storage batteries on the two sides, and the utilization rate of the cooling liquid can be improved; one distribution pipe is arranged above each cooling plate, and the two ends of each distribution pipe are respectively communicated with the first liquid inlet pipe and the second liquid inlet pipe, therefore, the first liquid inlet pipe and the second liquid inlet pipe can provide cooling liquid to the distribution pipe from the two sides, so that the distribution pipe can ensure that the flow of the cooling liquid in each flow channel is balanced, thereby ensuring the heat dissipation effect of the cooling plate and preventing uneven heat dissipation of the energy storage battery and local overheating; the number of flow channels is multiple, the multiple flow channels are equally spaced, and the flow channels are straight channels, therefore, the multiple flow channels can improve the heat exchange efficiency with the energy storage battery, and the cooling liquid flows from top to bottom in the flow channel, thereby reducing the flow resistance; the first liquid inlet pipe and the second liquid inlet pipe are vertically arranged at the two ends of the cooling plate, therefore, the energy storage battery can be placed between two adjacent cooling plates from the top, thereby facilitating the installation of the energy storage battery and the connection with other components. In summary, the liquid cooling heat dissipation device applied to the power energy storage can effectively increase the contact area of the energy storage battery and the cooling plate, avoid uneven heat dissipation of the energy storage battery, and improve the heat dissipation effect of the energy storage battery. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0017] Figure 1 It is a cross-sectional structure schematic view of the liquid cooling heat dissipation device applied to the power energy storage along A-A of the present application.

[0018] Figure 2 It is a cross-sectional structure schematic view of the liquid cooling heat dissipation device applied to the power energy storage along B-B of the present application.

[0019] Figure 3 Schematic diagram of the top view of the liquid cooling device for electric energy storage according to the present invention;

[0020] Figure 4 Schematic diagram of the front structure of the liquid cooling device for electric energy storage of the present invention;

[0021] Figure 5 It is a right side structural schematic diagram of the liquid cooling and heat dissipation device for electric energy storage of the present invention;

[0022] Figure 6 Schematic diagram of the top view of the liquid storage tank of the liquid cooling and heat dissipation device for electric energy storage of the present invention;

[0023] Figure 7 This is a schematic structural diagram of a first liquid inlet pipe of a liquid cooling and heat dissipation device for electric energy storage according to the present invention;

[0024] Figure 8 Schematic diagram of the top view of the cooling plate of the liquid cooling device for electric energy storage according to the present invention;

[0025] Figure 9 This is a bottom-up structural schematic diagram of a liquid distribution pipe of a liquid cooling and heat dissipation device for electric energy storage according to the present invention;

[0026] Figure 10 This is a front structural schematic diagram of the liquid distribution pipe of the liquid cooling and heat dissipation device applied to electric energy storage of the present invention.

[0027] Description of Figure Numbers:

[0028] 1-liquid storage tank; 11-liquid outlet; 12-placement tank; 2-cooling plate; 21-flow channel; 3-first liquid inlet pipe; 31-first liquid inlet hole; 4-liquid separation pipe; 41-liquid separation hole; 5-first circulation pump; 6-first liquid infusion pipe; 7-second circulation pump; 8-second liquid infusion pipe; 9-second liquid inlet pipe; 91-second liquid inlet hole.

[0029] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0033] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides a liquid cooling device for electric energy storage.

[0036] Please refer to Figures 1 to 10, the liquid cooling heat dissipation device for electric energy storage includes a liquid storage tank 1, a cooling plate 2, a first liquid inlet pipe 3, a second liquid inlet pipe 9, a liquid distribution pipe 4, a circulation pump and a liquid infusion pipe; both ends of the first liquid inlet pipe 3 and the second liquid inlet pipe 9 are closed, and the circulation pump is used to transport the coolant in the liquid storage tank 1 to one end of the first liquid inlet pipe 3 and one end of the second liquid inlet pipe 9 through the liquid infusion pipe respectively; the number of the cooling plates 2 is multiple, and the multiple cooling plates 2 are arranged in parallel and at equal intervals on the top of the liquid storage tank 1; the first liquid inlet pipe 3 and the second liquid inlet pipe 9 are respectively arranged vertically at both ends of the cooling plate 2; a plurality of first liquid inlet holes 31 are equally spaced on one side of the first liquid inlet pipe 3, and a plurality of second liquid inlet holes 91 are equally spaced on one side of the second liquid inlet pipe 9, and the first liquid inlet holes 31 are paired with the second liquid inlet holes 91 one by one. should be and are directly opposite; a distribution tube 4 is correspondingly provided directly above each of the cooling plates 2, one end of the distribution tube 4 is connected to a first liquid inlet hole 31, and the other end of the distribution tube 4 is connected to a corresponding second liquid inlet hole 91, so that the first liquid inlet tube 3 and the second liquid inlet tube 9 are respectively connected to each of the distribution tubes 4; a plurality of flow channels 21 are opened at equal intervals through the middle of the cooling plate 2, the upper end of each of the flow channels 21 is connected to the corresponding distribution tube 4, and the lower end of each of the flow channels 21 is connected to the liquid storage tank 1, so that the coolant can flow from the distribution tube 4 through the cooling plate 2 to the liquid storage tank 1; the energy storage battery is arranged on the liquid storage tank 1, and the energy storage battery is located between the two adjacent cooling plates 2, and the two sides of the energy storage battery are respectively in contact with the two adjacent cooling plates 2.

[0037] In the technical solution of the present invention, the circulation pump drives the coolant from the liquid storage tank 1 into the first liquid inlet pipe 3 and the second liquid inlet pipe 9, and then enters the liquid distribution pipe 4 from the first liquid inlet pipe 3 and the second liquid inlet pipe 9. The liquid distribution pipe 4 is connected to the upper end of the flow channel 21 opened by the cooling plate 2, and the lower end of the flow channel 21 is connected to the top of the liquid storage tank 1. The coolant flows through the cooling plate 2 and returns to the liquid storage tank 1. The energy storage battery is arranged on the liquid storage tank 1, and the two sides of the energy storage battery are respectively in contact with two adjacent cooling plates 2. Therefore, the cooling plate 2 and the liquid storage tank 1 can increase the heat dissipation area of ​​the energy storage battery, take away the heat generated by the energy storage battery from the two sides and the bottom, thereby improving the heat dissipation effect of the energy storage battery, and one cooling plate 2 can dissipate heat for the two energy storage batteries on both sides, which can improve the utilization rate of the coolant; there is a liquid distribution pipe 4 correspondingly arranged directly above each cooling plate 2, and each Both ends of the liquid distribution pipe 4 are connected to the first liquid inlet pipe 3 and the second liquid inlet pipe 9 respectively. Therefore, the first liquid inlet pipe 3 and the second liquid inlet pipe 9 can respectively provide cooling liquid to the liquid distribution pipe 4 from both sides, so that the liquid distribution pipe 4 can ensure that the flow of cooling liquid in each flow channel 21 is balanced, thereby ensuring the heat dissipation effect of the cooling plate 2, preventing uneven heat dissipation of the energy storage battery and local overheating; the number of the flow channels 21 is multiple, and the multiple flow channels 21 are equally spaced, and the flow channels 21 are straight channels. Therefore, the multiple flow channels 21 can improve the efficiency of heat exchange with the energy storage battery, and the coolant flows from top to bottom in the flow channel 21, which can reduce flow resistance; the first liquid inlet pipe 3 and the second liquid inlet pipe 9 are respectively vertically arranged at the two ends of the cooling plate 2, so the energy storage battery can be placed between two adjacent cooling plates 2 from above, which is convenient for the installation of the energy storage battery and the connection with other components. In summary, the liquid cooling device applied to electric energy storage can effectively increase the contact area between the energy storage battery and the cooling plate, avoid uneven heat dissipation of the energy storage battery, and improve the heat dissipation effect of the energy storage battery.

[0038] Specifically, the cooling plate 2 is a rectangular plate; the top surfaces of the cooling plate 2 and the liquid storage tank 1 are both made of aluminum alloy to ensure high thermal conductivity and improve the heat dissipation effect; the flow channel 21 is arranged parallel to the middle of the cooling plate 2; the top and both sides of the liquid cooling heat dissipation device used for power energy storage are open, which is convenient for installing and connecting the energy storage battery and is beneficial to the ventilation and heat dissipation of the energy storage battery.

[0039] In one embodiment, the energy storage battery is connected to the liquid storage tank 1 and the cooling plate 2 via a thermally conductive structural adhesive. In another embodiment, the liquid cooling heat dissipation device for electric energy storage further comprises a first clamping member and a second clamping member; the first clamping member and the second clamping member are both arranged on both sides of the top wall of the liquid storage tank 1, and the first clamping member and the second clamping member are both arranged between two adjacent cooling plates 2; the first clamping member corresponds to the second clamping member one by one; the first clamping member comprises a first mounting seat, a first spring and a first abutting member; the first mounting seat is connected to one side of the top wall of the liquid storage tank 1, one end of the first spring is connected to one side of the first mounting seat, and the first The other end of the spring is connected to the first abutment, and the side of the first abutment facing away from the first spring is used to abut one side of the energy storage battery; the second clamping member includes a second mounting seat, a second spring and a second abutment; the second mounting seat is connected to the other side of the top wall of the liquid storage tank 1, one end of the second spring is connected to one side of the second mounting seat, the other end of the second spring is connected to the second abutment, and the side of the second abutment facing away from the second spring is used to abut the other side of the energy storage battery; the first clamping member and the second clamping member are used to jointly clamp and fix one energy storage battery.

[0040] Furthermore, the liquid-cooled heat dissipation device for electric energy storage also includes a controller and a temperature sensor; the controller is communicatively connected to the circulation pump and the temperature sensor respectively; the temperature sensor is used to monitor the temperature of the energy storage battery and transmit the monitoring data to the controller, and the controller can adjust the power of the circulation pump according to the monitoring data. Specifically, when the temperature sensor detects that the temperature of the energy storage battery is high, the controller can increase the power of the circulation pump to speed up the flow rate of the coolant, thereby improving the heat dissipation effect; when the temperature sensor detects that the temperature of the energy storage battery is low, the controller can appropriately reduce the power of the circulation pump, thereby saving energy. Furthermore, the liquid-cooled heat dissipation device for electric energy storage also includes a refrigerator, which is communicatively connected to the controller, and the refrigerator is used to adjust the temperature of the coolant to ensure the heat dissipation effect.

[0041] Preferably, the liquid separation tube 4 is perpendicular to the first liquid inlet tube 3 and the second liquid inlet tube 9 respectively; a plurality of liquid separation holes 41 are evenly spaced at the bottom of the liquid separation tube 4, and the liquid separation holes 41 correspond one-to-one to the flow channels 21, and each of the liquid separation holes 41 is connected to the corresponding flow channel 21.

[0042] Preferably, a plurality of groups of liquid outlet holes 11 are provided on the top of the liquid storage tank 1, and one group of the liquid outlet holes 11 corresponds to one of the cooling plates 2; each group of the liquid outlet holes 11 includes a plurality of the liquid outlet holes 11 arranged at equal intervals, and the liquid outlet holes 11 correspond one-to-one to the flow channels 21, and each of the liquid outlet holes 11 is connected to the corresponding flow channel 21.

[0043] In this embodiment, the liquid separation hole 41 and the liquid outlet hole 11 are both circular holes, the flow channel 21 is a circular channel, and the diameters of the liquid separation hole 41 , the liquid outlet hole 11 and the flow channel 21 are consistent.

[0044] Preferably, the circulation pump is arranged in the liquid storage tank 1; the circulation pump includes a first circulation pump 5 and a second circulation pump 7; the infusion tube includes a first infusion tube 6 and a second infusion tube 8; one end of the first infusion tube 6 is connected to the output end of the first circulation pump 5, and the other end of the first infusion tube 6 is connected to one end of the first liquid inlet tube 3; one end of the second infusion tube 8 is connected to the output end of the second circulation pump 7, and the other end of the second infusion tube 8 is connected to one end of the second liquid inlet tube 9; the first infusion tube 6 and the second infusion tube 8 are respectively located on opposite sides of the liquid storage tank 1.

[0045] The circulation pump is used to drive the liquid circulation within the liquid-cooled heat dissipation device for power energy storage. Specifically, the first circulation pump 5 is located at one end of the liquid storage tank 1; the second circulation pump 7 is located at the end of the liquid storage tank 1 away from the first circulation pump 5. Coolant enters from different ends of the first and second liquid inlet pipes 3 and 9, ensuring a balanced flow rate to each cooling plate 2, thus avoiding inconsistent heat dissipation across the cooling plates 2.

[0046] Preferably, the first liquid inlet pipe 3 and the second liquid inlet pipe 9 are both connected to the top of the cooling plate 2; both ends of the liquid distributing pipe 4 are open, and the liquid distributing pipe 4 is located between the first liquid inlet pipe 3 and the second liquid inlet pipe 9, one end of the liquid distributing pipe 4 abuts the first liquid inlet pipe 3, and the other end of the liquid distributing pipe 4 abuts the second liquid inlet pipe 9, so that the two ends of the liquid distributing pipe 4 are respectively connected to the first liquid inlet hole 31 and the second liquid inlet hole 91.

[0047] Preferably, the first liquid inlet hole 31 is located at the upper part of the first liquid inlet pipe 3 on a side close to the second liquid inlet pipe 9 ; the second liquid inlet hole 91 is located at the upper part of the second liquid inlet pipe 9 on a side close to the first liquid inlet pipe 3 .

[0048] Specifically, the first liquid inlet hole 31 and the second liquid inlet hole 91 are directly opposite each other. In this embodiment, both the first liquid inlet hole 31 and the second liquid inlet hole 91 are square holes. The first liquid inlet hole 31 is located at the upper portion of one side of the first liquid inlet pipe 3, while the second liquid inlet hole 91 is located at the upper portion of one side of the second liquid inlet pipe 9, thereby ensuring a more balanced flow of coolant to each of the cooling plates 2.

[0049] Preferably, one side of the liquid storage battery abuts against one side of the first liquid inlet pipe 3 , and the other opposite side of the energy storage battery abuts against one side of the second liquid inlet pipe 9 .

[0050] The two sides of the energy storage battery abutting the first liquid inlet pipe 3 and the second liquid inlet pipe 9 respectively can improve the stability of the liquid storage battery installation. Furthermore, the two sides of the energy storage battery can also be connected to the first liquid inlet pipe 3 and the second liquid inlet pipe 9 respectively using thermally conductive structural adhesive to ensure more stable installation of the energy storage battery.

[0051] Preferably, a placement groove 12 is provided on the top of the liquid storage tank 1, and the placement groove 12 is arranged between two adjacent cooling plates 2; the two opposite inner walls of the placement groove 12 are flush with the side walls of the two adjacent cooling plates 2; when the energy storage battery is embedded in the placement groove 12, the four side walls of the energy storage battery can fit in contact with the four inner walls of the placement groove 12.

[0052] Specifically, the placement groove 12 is a rectangular groove. In one embodiment, a thermally conductive structural adhesive is provided in the placement groove 12, and the energy storage battery is connected and fixed to the liquid cooling device for power energy storage through the thermally conductive structural adhesive in the placement groove 12.

[0053] Preferably, the first liquid inlet pipe 3, the second liquid inlet pipe 9 and the liquid distribution pipe 4 are all square tubes; the other two opposite inner walls of the placement groove 12 are flush with one side of the first liquid inlet pipe 3 and one side of the second liquid inlet pipe 9 respectively.

[0054] The first liquid inlet pipe 3, the second liquid inlet pipe 9 and the liquid dispensing pipe 4 are all square tubes, which is conducive to the side walls of the energy storage battery being in close contact with the first liquid inlet pipe 3, the second liquid inlet pipe 9 and the liquid dispensing pipe 4 respectively, thereby improving the heat dissipation effect and the fixing effect of the energy storage battery.

[0055] Preferably, the width of the liquid dispensing tube 4 is consistent with the width of the cooling plate 2. The liquid dispensing tube 4 and the cooling plate 2 having the same width can ensure that both sides of the energy storage battery are in close contact with the cooling plate 2 and the liquid dispensing tube 4, thereby improving the heat dissipation effect.

[0056] The above merely illustrates the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, which are made under the concept of the present application, and based on the content of the present application specification and drawings, are included in the patent protection scope of the present application.

Claims

1. A liquid cooling device for electric energy storage, characterized in that: The cooling device comprises a liquid storage tank (1), a cooling plate (2), a first liquid inlet pipe (3), a second liquid inlet pipe (9), a liquid distribution pipe (4), a circulation pump and a liquid infusion pipe; both ends of the first liquid inlet pipe (3) and the second liquid inlet pipe (9) are closed, and the circulation pump is used to transport the cooling liquid in the liquid storage tank (1) to one end of the first liquid inlet pipe (3) and one end of the second liquid inlet pipe (9) through the liquid infusion pipe; the number of the cooling plates (2) is multiple, and the multiple cooling plates (2) are arranged in parallel and at equal intervals on the top of the liquid storage tank (1); the first liquid inlet pipe (3) and the second liquid inlet pipe (9) are respectively arranged vertically at the two ends of the cooling plate (2); a plurality of first liquid inlet holes (31) are arranged at equal intervals on one side of the first liquid inlet pipe (3), and a plurality of second liquid inlet holes (91) are arranged at equal intervals on one side of the second liquid inlet pipe (9), and the first liquid inlet holes (31) correspond to the second liquid inlet holes (91) one by one and are directly opposite to each other; each A liquid distribution pipe (4) is correspondingly provided above each of the cooling plates (2), one end of the liquid distribution pipe (4) is connected to one of the first liquid inlet holes (31), and the other end of the liquid distribution pipe (4) is connected to one of the corresponding second liquid inlet holes (91), so that the first liquid inlet pipe (3) and the second liquid inlet pipe (9) are respectively connected to each of the liquid distribution pipes (4); a plurality of flow channels (21) are opened at equal intervals through the middle of the cooling plate (2), the upper end of each of the flow channels (21) is connected to the corresponding liquid distribution pipe (4), and the lower end of each of the flow channels (21) is connected to the liquid storage tank (1), so that the coolant can flow from the liquid distribution pipe (4) through the cooling plate (2) to the liquid storage tank (1); an energy storage battery is provided on the liquid storage tank (1), and the energy storage battery is located between two adjacent cooling plates (2), and both sides of the energy storage battery are respectively in contact with the two adjacent cooling plates (2).

2. The liquid cooling device for electric energy storage according to claim 1, characterized in that: The liquid separation pipe (4) is perpendicular to the first liquid inlet pipe (3) and the second liquid inlet pipe (9), respectively; a plurality of liquid separation holes (41) are evenly spaced at the bottom of the liquid separation pipe (4), the liquid separation holes (41) correspond one-to-one to the flow channels (21), and each of the liquid separation holes (41) is connected to the corresponding flow channel (21).

3. The liquid cooling device for electric energy storage according to claim 2, characterized in that: The top of the liquid storage tank (1) is provided with a plurality of groups of liquid outlet holes (11), and one group of the liquid outlet holes (11) corresponds to one of the cooling plates (2); each group of the liquid outlet holes (11) includes a plurality of the liquid outlet holes (11) arranged at equal intervals, and the liquid outlet holes (11) correspond one-to-one to the flow channels (21), and each of the liquid outlet holes (11) is connected to the corresponding flow channel (21).

4. The liquid cooling device for electric energy storage according to claim 1, characterized in that: The circulation pump is arranged in the liquid storage tank (1); the circulation pump includes a first circulation pump (5) and a second circulation pump (7); the infusion pipe includes a first infusion pipe (6) and a second infusion pipe (8); one end of the first infusion pipe (6) is connected to the output end of the first circulation pump (5), and the other end of the first infusion pipe (6) is connected to one end of the first infusion pipe (3); one end of the second infusion pipe (8) is connected to the output end of the second circulation pump (7), and the other end of the second infusion pipe (8) is connected to one end of the second infusion pipe (9); the first infusion pipe (6) and the second infusion pipe (8) are respectively located on opposite sides of the liquid storage tank (1).

5. The liquid cooling device for electric energy storage according to claim 1, characterized in that: The first liquid inlet pipe (3) and the second liquid inlet pipe (9) are both connected to the top of the cooling plate (2); both ends of the liquid separator (4) are open, and the liquid separator (4) is located between the first liquid inlet pipe (3) and the second liquid inlet pipe (9), one end of the liquid separator (4) abuts the first liquid inlet pipe (3), and the other end of the liquid separator (4) abuts the second liquid inlet pipe (9), so that the two ends of the liquid separator (4) are connected to the first liquid inlet hole (31) and the second liquid inlet hole (91), respectively.

6. The liquid cooling device for electric energy storage according to claim 1, characterized in that: The first liquid inlet hole (31) is located at the upper part of the first liquid inlet pipe (3) on the side close to the second liquid inlet pipe (9); the second liquid inlet hole (91) is located at the upper part of the second liquid inlet pipe (9) on the side close to the first liquid inlet pipe (3).

7. The liquid cooling device for electric energy storage according to claim 1, characterized in that: One side of the liquid storage battery abuts against one side of the first liquid inlet pipe (3), and the other opposite side of the energy storage battery abuts against one side of the second liquid inlet pipe (9).

8. The liquid cooling device for electric energy storage according to claim 1, characterized in that: A placement groove (12) is provided on the top of the liquid storage tank (1), and the placement groove (12) is arranged between two adjacent cooling plates (2); two opposite inner side walls of the placement groove (12) are flush with the side walls of the two adjacent cooling plates (2); when the energy storage battery is embedded in the placement groove (12), the four side walls of the energy storage battery can be in contact with the four inner side walls of the placement groove (12).

9. The liquid cooling device for electric energy storage according to claim 8, characterized in that: The first liquid inlet pipe (3), the second liquid inlet pipe (9) and the liquid distribution pipe (4) are all square tubes; the other two opposite inner side walls of the placement groove (12) are respectively flush with one side of the first liquid inlet pipe (3) and one side of the second liquid inlet pipe (9).

10. The liquid cooling device for electric energy storage according to claim 9, characterized in that: The width of the liquid distribution pipe (4) is consistent with the width of the cooling plate (2).

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