A flow-collecting box type energy storage liquid-cooled battery device

Abstract

The utility model provides a kind of current collection box type energy storage liquid cooling battery device, including several flow channel plates (10), a upper cover (20) and several battery modules (30), several flow channel plates (10) are fixedly connected with the upper cover (20) and form mounting cavity between the two, several battery modules (30) are provided in the mounting cavity, one end of several flow channel plates (10) is provided with a current collection box (40), the current collection box (40) has a water inlet cavity (41) and a water outlet cavity (42), the water inlet cavity (41) is communicated with the water inlet (11) of each flow channel plate (10), and the water outlet cavity (42) is communicated with the water outlet (12) of each flow channel plate (10). The utility model removes the heat generated by battery module in the process of cooling liquid flowing in each flow channel plate bottom surface, so as to achieve the purpose of accurate temperature control of battery module, improve the consistency of temperature difference between battery modules, effectively prolong the service life of battery, and reduce the risk of spontaneous combustion.

Description

Technical Field

[0001] This utility model relates to the field of battery energy storage system technology, and in particular to a current collector-type liquid-cooled battery device. Background Technology

[0002] When charging or discharging an energy storage system, the energy storage battery pack generates a large amount of heat. Combined with the effect of the compact battery space arrangement, the temperature inside the energy storage battery pack rises rapidly. In the existing technology, a liquid cooling plate is designed on the side of the battery pack to transfer the heat from the battery pack to the liquid cooling plate, and then the heat is dissipated into the air through a heat sink. However, it is difficult to dissipate the heat evenly in a localized area inside the pack, which affects the performance and lifespan of the energy storage system and may even cause safety hazards in severe cases.

[0003] In existing technologies, the liquid cooling system of energy storage battery packs usually adopts a bottom S-shaped liquid cooling channel for heat dissipation. The liquid cooling channel starts from one side. However, under actual working conditions, the battery module often experiences heat concentration, that is, the heat generated by the middle module is slightly higher than that of other parts. Using an S-shaped channel will result in a large temperature difference between the middle module and the two side modules, poor consistency, risk of spontaneous combustion, and reduced lifespan of the battery module.

[0004] Therefore, existing technologies need to be improved and enhanced. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a current collector-type liquid-cooled battery storage device, which improves the temperature difference consistency and service life between battery modules, and also reduces the risk of spontaneous combustion.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A current collector type liquid-cooled energy storage battery device includes several flow channel plates, a top cover, and several battery modules. The flow channel plates are fixedly connected to the top cover, and a mounting cavity is formed between them. The mounting cavity contains several battery modules. A current collector is provided at one end of each flow channel plate. The current collector has an inlet cavity and an outlet cavity. The inlet cavity is connected to the inlet of each flow channel plate, and the outlet cavity is connected to the outlet of each flow channel plate. The current collector is provided with an inlet nozzle connected to the inlet cavity and an outlet nozzle connected to the outlet cavity.

[0008] As a further embodiment of this utility model, a snap-fit ​​structure is provided between two adjacent flow channel plates.

[0009] As a further embodiment of this utility model, the fastening structure includes a protrusion and a groove, the protrusion being located within the groove, and the protrusion and the groove being respectively disposed on opposite sides of two adjacent flow channel plates.

[0010] As a further embodiment of this utility model, a front panel, a rear panel, a left panel, and a right panel are provided between the top cover and the plurality of flow channel plates.

[0011] As a further embodiment of this utility model, a plurality of battery modules are provided in a one-to-one correspondence with a plurality of flow channel plates.

[0012] As a further embodiment of this utility model, a crossbeam is provided between each end of the battery module and the corresponding flow channel plate.

[0013] As a further embodiment of this utility model, each of the flow channel plates has a U-shaped liquid cooling flow channel, one end of which is connected to the water inlet and the other end of which is connected to the water outlet.

[0014] As a further embodiment of this utility model, each of the flow channel plates has openings at both ends and is covered with strip-shaped plugs.

[0015] As a further embodiment of this utility model, the collector box has openings at both ends and is sealed with end plugs.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Due to the aforementioned structural design, which includes several flow channel plates, a top cover, and several battery modules, each flow channel plate has a collector box at one end. The collector box has an inlet chamber connected to the inlet of each flow channel plate and an outlet chamber connected to the outlet of each flow channel plate. The collector box is equipped with an inlet nozzle connected to the inlet chamber and an outlet nozzle connected to the outlet chamber. Coolant enters each flow channel plate from the inlet nozzle and flows out from the outlet nozzle, thus forming a closed and uniform cooling circulation space. Each flow channel plate is in contact with the surface of the battery module. During the flow of coolant on the bottom surface of each flow channel plate, the heat generated by the battery module is carried away, thereby achieving precise temperature control of the battery module, improving the consistency of temperature difference between battery modules, effectively extending battery life, and reducing the risk of spontaneous combustion. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Appendix Figure 2 This is an exploded structural diagram of an embodiment of the present utility model;

[0020] Appendix Figure 3 For the appendix Figure 1 A cross-sectional schematic diagram of AA;

[0021] Appendix Figure 4 This is a schematic diagram of several flow channel plates of this utility model.

[0022] The labels in the diagram are as follows:

[0023] 10-Flow channel plate, 20-Top cover, 30-Battery module, 40-Collapse box;

[0024] 11-Inlet, 12-Outlet, 13-Protrusion, 14-Groove, 15-Strip plug;

[0025] 21-Front panel, 22-Rear panel, 23-Left panel, 24-Right panel;

[0026] 31-Crossbeam;

[0027] 41-Inlet chamber, 42-Outlet chamber, 43-Inlet nozzle, 44-Outlet nozzle, 45-End plug. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The features and performance of this utility model will be further described in detail below with reference to the embodiments. Example

[0032] like Figure 1-4 As shown, this application discloses a current collector type liquid-cooled energy storage battery device, including four flow channel plates 10, a top cover 20, and four battery modules 30. The four flow channel plates 10 are fixedly connected to the top cover 20, forming an installation cavity between them. The four battery modules 30 are disposed within the installation cavity, with each battery module 30 corresponding to one of the flow channel plates 10. A current collector 40 is disposed at one end of each of the four flow channel plates 10. The current collector 40 has a water inlet cavity 41 and a water outlet cavity 42. Both ends of the current collector 40 are open and sealed with end plugs 45. The water inlet cavity 41 is connected to the water inlet 11 of each flow channel plate 10, and the water outlet cavity 42 is connected to the water outlet 12 of each flow channel plate 10. The collector box 40 is provided with an inlet nozzle 43 connected to the inlet chamber 41 and an outlet nozzle 44 connected to the outlet chamber 42. Through the above structural design, the coolant enters the inlet chamber 41 from the inlet nozzle 43, then enters the flow channel plate through the inlet 11, then flows back to the outlet chamber 42 from the outlet 12, and finally flows out from the outlet nozzle 44, thus forming a closed and uniform cooling circulation space. Since each flow channel plate 10 is in contact with the surface of the battery module 30, the coolant on the bottom surface of each flow channel plate 10 carries away the heat generated by the battery module 30 during the flow of coolant, thereby achieving precise temperature control of the battery module 30, improving the consistency of temperature difference between battery modules, effectively extending the battery's service life, and reducing the risk of spontaneous combustion.

[0033] Specifically, a snap-fit ​​structure is provided between two adjacent flow channel plates 10. The snap-fit ​​structure includes a protrusion 13 and a groove 14. The protrusion 13 is located in the groove 14. The protrusion 13 and the groove 14 are respectively provided on the opposite side of the two adjacent flow channel plates 10. That is, the protrusion 13 is provided on the side of one flow channel plate facing the other flow channel plate, and the groove 14 is provided on the side of the other flow channel plate facing the first flow channel plate. Through the cooperation of the protrusion 13 and the groove 14, the two adjacent flow channel plates are stably assembled together, thereby making the four flow channel plates stably assembled together.

[0034] Specifically, a front panel 21, a rear panel 22, a left panel 23, and a right panel 24 are provided between the top cover 20 and the four flow channel plates 10, thereby fixing the top cover and the four flow channel plates together.

[0035] Specifically, a crossbeam 31 is provided between each end of the battery module 30 and the corresponding flow channel plate 10 to support the battery module.

[0036] Specifically, each of the flow channel plates 10 has a U-shaped liquid cooling flow channel, one end of which is connected to the water inlet 11 and the other end is connected to the water outlet 12. Both ends of each flow channel plate 10 are open and covered with strip-shaped plugs 15.

[0037] In summary, this utility model, through the above-described structural design, overcomes the shortcomings of the prior art and has advantages such as high heat exchange efficiency, small temperature difference, and low cost.

[0038] The above-described embodiments are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A current collector-type energy storage liquid-cooled battery device, characterized in that: The device includes several flow channel plates (10), a top cover (20), and several battery modules (30). The flow channel plates (10) are fixedly connected to the top cover (20), and an installation cavity is formed between them. Several battery modules (30) are disposed in the installation cavity. A collection box (40) is disposed at one end of each flow channel plate (10). The collection box (40) has a water inlet cavity (41) and a water outlet cavity (42). The water inlet cavity (41) is connected to the water inlet (11) of each flow channel plate (10), and the water outlet cavity (42) is connected to the water outlet (12) of each flow channel plate (10). The collection box (40) is provided with a water inlet nozzle (43) connected to the water inlet cavity (41) and a water outlet nozzle (44) connected to the water outlet cavity (42).

2. The current collector-type liquid-cooled battery device according to claim 1, characterized in that: A snap-fit ​​structure is provided between two adjacent flow channel plates (10).

3. The current collector-type liquid-cooled battery device according to claim 2, characterized in that: The fastening structure includes a protrusion (13) and a groove (14). The protrusion (13) is located in the groove (14). The protrusion (13) and the groove (14) are respectively disposed on opposite sides of two adjacent flow channel plates (10).

4. The current collector-type liquid-cooled battery device according to claim 3, characterized in that: A front panel (21), a rear panel (22), a left panel (23) and a right panel (24) are provided between the top cover (20) and the plurality of flow channel plates (10).

5. The current collector-type liquid-cooled battery device according to claim 4, characterized in that: A number of battery modules (30) are provided in a one-to-one correspondence with a number of flow channel plates (10).

6. The current collector-type liquid-cooled battery device according to claim 5, characterized in that: A crossbeam (31) is provided between each end of the battery module (30) and the corresponding flow channel plate (10).

7. The current collector-type liquid-cooled battery device according to claim 6, characterized in that: Each of the flow channel plates (10) has a U-shaped liquid cooling flow channel, one end of which is connected to the inlet (11) and the other end of which is connected to the outlet (12).

8. The current collector-type liquid-cooled battery device according to claim 7, characterized in that: Each of the aforementioned flow channel plates (10) has openings at both ends and is covered with strip-shaped plugs (15).

9. The current collector-type liquid-cooled battery device according to claim 8, characterized in that: The collector box (40) has openings at both ends and is covered with end plugs (45).

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