Flow guide assembly, battery cell module and battery box

Abstract

The utility model discloses a flow guide assembly, a battery cell module and a battery box, and belongs to the technical field of fluid heat exchange and batteries. The flow guide assembly comprises a runner plate, a partition plate and a fluid nozzle; a runner groove extending on a first plate face is formed in the first plate face of the runner plate, the partition plate covers the first plate face, a liquid inlet and a plurality of liquid outlets are formed in the partition plate in a penetrating mode, the liquid inlet faces the starting end of the runner groove, and the liquid outlets are distributed in the line of the runner groove. And the fluid nozzle is arranged at the liquid inlet and is communicated with the runner groove. The flow guide assembly is convenient to assemble and good in compatibility; and the plurality of liquid outlets are led out from the plate surface, and the specific number and dispersion state can be flexibly designed. The utility model further provides a battery cell module and a battery box which are provided with the flow guide assembly, and the battery cell module and the battery box have the advantages of being good in heat exchange performance and convenient to assemble, operate and maintain.

Description

Technical Field

[0001] This utility model belongs to the field of fluid heat exchange and battery technology, specifically relating to a flow guiding component and a cell module and battery box equipped with the flow guiding component. Background Technology

[0002] With the continued growth of the new energy industry, electrochemical energy storage system technology is becoming increasingly mature. However, thermal runaway accidents in energy storage power stations occur frequently, affecting their safe development. Among these accidents, inadequate heat dissipation during battery charging and discharging is one of the main causes of thermal runaway in energy storage power stations.

[0003] Traditional energy storage systems typically use air cooling and liquid cooling plates to dissipate heat from the battery cells, but these methods have significant limitations in terms of heat dissipation efficiency and uniformity. Currently, direct immersion liquid cooling technology has achieved a major breakthrough in cell heat transfer and temperature equalization. Compared to traditional air cooling and indirect liquid cooling plate technologies, it boasts higher heat exchange efficiency and better temperature uniformity, effectively improving the safety and lifespan of energy storage systems.

[0004] In direct immersion liquid cooling at the pack level, a simple single-stage piping system is typically used, requiring a flow guiding structure inside the battery pack to ensure uniform flow of the immersion liquid. However, most related technologies involve topology modifications or the addition of flow guiding structures on the battery pack, which complicates the battery pack structure, increases manufacturing difficulty, and often carries the risk of coolant leakage. Utility Model Content

[0005] The present invention aims to provide a current guiding component and a cell module and battery box equipped with the current guiding component, which have the advantages of convenient assembly and good compatibility; the present invention is achieved through the following scheme.

[0006] In a first aspect, this utility model provides a flow guiding component, including a flow channel plate, a baffle plate, and a fluid nozzle; a flow channel groove extending on the first plate surface of the flow channel plate is formed, the baffle plate covers the first plate surface, and a liquid inlet and a plurality of liquid outlets are formed through the baffle plate, the liquid inlet being located at the starting end of the flow channel groove, and the plurality of liquid outlets being distributed along the flow channel groove; the fluid nozzle is disposed at the liquid inlet and communicates with the flow channel groove.

[0007] As a preferred technical solution, the flow channel is a closed channel with the starting end and the ending end coinciding.

[0008] As a preferred technical solution, both the flow channel plate and the partition plate include a square main body. One end of the square main body of the flow channel plate and the partition plate is correspondingly provided with a fluid nozzle mounting part. The liquid inlet is opened on the fluid nozzle mounting part of the partition plate, and the starting end of the flow channel groove is located at the fluid nozzle mounting part of the flow channel plate.

[0009] As a preferred technical solution, the flow channel includes a square closed channel, and a plurality of liquid outlets are symmetrically distributed along the flow channel.

[0010] As a preferred technical solution, the flow channel includes multiple diverging channels that share a common starting end and each has its own ending end.

[0011] The flow guiding component provided by the above technical solution has the following advantages: it can be installed as a modular component in various ways on the inner wall of the submerged heat exchange container or on the heat exchange module in the submerged heat exchange container, with good compatibility; in addition, the arrangement of the flow channel is relatively flexible, the liquid outlet on the baffle only needs to be opened along the flow channel, and multiple liquid outlets are led out from the plate surface (rather than the side edge of the plate body), and the specific number and dispersion state can be flexibly designed, and different baffles can be replaced and adjusted according to different application scenarios.

[0012] In a second aspect, this utility model provides a battery cell module, including a battery cell array and an end plate disposed at the end of the battery cell array; it also includes the aforementioned flow guiding component, which is disposed on the end plate, and a plurality of liquid outlets are oriented toward the end plate and form a diffusion groove between the end plate and the end plate.

[0013] As a preferred technical solution, the flow channel plate and the partition plate are fixedly connected to the end plate at a position that avoids the flow channel groove.

[0014] As a preferred technical solution, an assembly part is provided in the middle of the end face of the end plate, and a plurality of diffusion grooves are provided around the assembly part; the middle of the flow channel plate and the partition plate are fixedly connected to the assembly part, and the plurality of diffusion grooves are respectively connected to at least one of the liquid outlets.

[0015] As a preferred technical solution, a nut is pre-embedded in the assembly part of the end plate, and the middle part of the flow channel plate and the partition plate are fixedly connected by screws and the nut.

[0016] The beneficial effects of the battery cell module provided by the above technical solution are as follows: the flow guiding component is set on the end plate of the battery cell array, which can form an integrated module with the battery cell array; the liquid outlet of the flow guiding component faces the end plate and forms a diffusion groove between the end plate and the end plate, so that the heat exchange fluid coming out of the liquid outlet can quickly exchange heat with the end plate and diffuse outward from the periphery of the end plate, resulting in better heat exchange performance.

[0017] A third aspect of this utility model provides a battery box, including a box body, an inlet pipe, an outlet pipe, and a battery cell module disposed inside the box body; the battery cell module adopts the battery cell module described above, the inlet pipe is connected to the fluid nozzle, and the outlet pipe is connected to the outlet on the box body.

[0018] The battery box provided by the above technical solution has the following advantages: after at least one set of battery cell modules is arranged in the box, the corresponding liquid inlet pipe and liquid outlet pipe are connected to realize immersion heat exchange for each battery cell array. It is easy to assemble, has good heat exchange performance, and is easy to operate and maintain. Attached Figure Description

[0019] Figure 1 An exploded view of the flow guiding component provided in an embodiment of this utility model.

[0020] Figure 2 A front perspective view of the flow guiding component provided in an embodiment of this utility model.

[0021] Figure 3 A front perspective view of an alternative embodiment of the flow guiding component provided in this utility model.

[0022] Figure 4 An exploded view of the battery cell module provided in an embodiment of this utility model.

[0023] Figure 5 A partial cross-sectional view of the assembly of the battery cell end plate and the current guiding component in the battery cell module provided in this embodiment of the utility model.

[0024] Reference numerals: 100-Flow guide assembly, 10-Flow channel plate, 20-Baffle plate, 30-Fluid nozzle, 11-First plate surface, 12-Second plate surface, 111-Flow channel groove, 21-Inlet, 22-Outlet, 200-Battery cell module, 40-Battery cell array, 50-End plate, 51-Assembly part, 52-Diffusion groove, 15-Screw hole, 25-Screw hole, 61-Screw, 62-Nut. Detailed Implementation

[0025] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. In the description of the present utility model, it should be understood that the terms "center", "periphery", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "front", "back", etc., indicating the orientation or positional relationship, are all based on the orientation or relative positional relationship shown in the accompanying drawings. They are intended to facilitate a clear description of the structure of the product or device and are not used to limit the actual orientation of the product or device during production, use, sales, etc.

[0026] Furthermore, the terms "first" and "second" are used only for distinguishing purposes in the description and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0027] This embodiment uses immersion heat exchange of a cell array as an example to provide a current guiding component, a cell module equipped with the current guiding component, and a battery box. The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Where there is no conflict, the technical features in the various embodiments can be used interchangeably.

[0028] like Figure 1 As shown, the flow guiding assembly 100 includes a flow channel plate 10, a baffle plate 20, and a fluid nozzle 30; wherein, the flow channel plate 10 has a first plate surface 11 and a second plate surface 12 opposite to it, and a flow channel groove 111 with a predetermined depth (less than the thickness of the flow channel plate 10) is formed on the first plate surface 11, and the flow channel groove 111 extends for a predetermined length on the first plate surface 11.

[0029] The baffle 20 covers the first surface 11 of the flow channel plate 10, thus sealing the opening of the flow channel groove 11 on the first surface 11, forming a flow channel in which the flow continues in the direction of the flow channel groove 111. Figure 1 and Figure 2 As shown, a liquid inlet 21 and multiple liquid outlets 22 are provided through the partition plate 20 in the thickness direction. The liquid inlet 21 is located at the starting end of the flow channel 111, and the multiple liquid outlets 22 are distributed along the flow channel 111. The fluid nozzle 30 is disposed at the liquid inlet 21 and is connected to the flow channel 111. Figure 2 (The lines are presented in a perspective dashed manner) connected.

[0030] See also Figure 1 and Figure 2 In this embodiment, the flow channel 111 is a closed channel with its starting end and ending end overlapping (or connected), forming a closed-loop flow path. Specifically, both the flow channel plate 10 and the partition plate 20 include a square main body, and a fluid nozzle mounting part is correspondingly provided on the upper left side of the square main body of the flow channel plate 10 and the partition plate 20. The liquid inlet 21 is opened on the fluid nozzle mounting part of the partition plate 20, and the starting end of the flow channel 111 is located at the fluid nozzle mounting part of the flow channel plate 10.

[0031] More specifically, in this embodiment, the flow channel 111 includes a square closed channel, that is, the flow channel is enclosed in a square shape, and the multiple liquid outlets 22 opened on the partition plate 20 are symmetrically distributed along the flow channel 111.

[0032] As an alternative implementation method, combined with Figure 3 As shown, the flow channel may include multiple diverging channels that share a common starting end and each has its own ending end.

[0033] As an extended implementation, the second surface 12 of the flow channel plate 10 also has a flow channel groove of a predetermined depth, and another partition plate covers the second surface 12 of the flow channel plate 10. This other partition plate is also provided with a liquid inlet and multiple liquid outlets. This extended implementation allows flow channel grooves and corresponding liquid inlets and multiple liquid outlets to be formed on both sides of a flow guide plate, further expanding the function and usage of the flow guide assembly 100.

[0034] The flow guiding component 100 described above can be installed as a modular component on the inner wall of a submerged heat exchange container or on the heat exchange module in the submerged heat exchange container in various installation methods, with good compatibility. In addition, the arrangement of the flow channel is relatively flexible. The liquid outlet on the baffle only needs to be opened along the flow channel, and the specific number and dispersion of multiple liquid outlets can be flexibly designed. Different baffles can be replaced and adjusted according to different application scenarios.

[0035] like Figure 4 As shown, this embodiment also provides a battery cell module 200, including a battery cell array 40 and an end plate 50 disposed at the end of the battery cell array, and also includes the aforementioned current guiding component 100, which is disposed on the end plate 50, thus forming an integrated module with the battery cell array 40; combined with Figure 5 As shown, the multiple liquid outlets 22 of the flow guiding assembly 100 face the end plate 50 and form a diffusion groove 52 between them. The diffusion groove 52 is preferably formed around the end plate 50 and can diffuse the coolant to the four outer sides, so that the heat exchange fluid coming out of the liquid outlet 22 can quickly exchange heat with the end plate 50 and diffuse outward from the periphery of the end plate, resulting in better heat exchange performance.

[0036] Combination Figure 1 As shown, screw holes 15 and 25, extending through the thickness of the flow channel plate 10 and partition plate 20 respectively, are provided at positions avoiding the flow channel groove 11. The flow channel plate 10 and partition plate 20 are fixedly connected to the end plate 50 by screws 61 through the screw holes. A nut 62, which mates with the screw 61, is pre-embedded in the end plate 50. (See Figure 15). Figure 5 .

[0037] See also Figure 4 and Figure 5In a preferred embodiment, an assembly part 51 is provided in the middle of the end face of the end plate 50, and a plurality of diffusion grooves 52 are provided around the assembly part; the middle of the flow channel plate 10 and the partition plate 20 are fixedly connected to the assembly part 51 by screws 61 through screw holes 62, and the plurality of diffusion grooves 52 are respectively connected to at least one liquid outlet 22 of the flow guiding assembly 100.

[0038] Finally, this embodiment also provides a battery box, including a box body, an inlet pipe, an outlet pipe, and a cell module disposed inside the box body; wherein, the cell module adopts the cell module 200 described above; in addition, the corresponding inlet pipes are respectively connected to the fluid nozzles 30 of the flow guiding components 100 of each cell module 200, and the outlet pipes are connected to the outlet on the box body.

[0039] In use, the battery cell module 200 is immersed in the heat exchange fluid contained within the casing. The fluid nozzle 30 of the flow guiding component 100 continuously receives the heat exchange fluid, which is then diverted to the periphery of the battery cell array 40 through the liquid outlets 22 of the flow guiding component 100. Simultaneously, the drain pipe continuously discharges the heat exchange fluid after heat exchange, thereby achieving immersion heat exchange for each battery cell array 40. Moreover, the battery box provided in this embodiment is easy to assemble, has good heat exchange performance, and is easy to maintain.

[0040] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of the first application. Therefore, any equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A flow directing assembly, characterized by, The application relates to a flow guide assembly, which comprises a flow channel plate, a partition plate and a fluid nozzle; a flow channel groove is formed on a first plate surface of the flow channel plate and extends on the first plate surface; the partition plate covers the first plate surface; a liquid inlet and a plurality of liquid outlets are formed through the partition plate; the liquid inlet is located at a starting end of the flow channel groove; and the plurality of liquid outlets are distributed along the flow channel groove.

2. The flow directing assembly of claim 1, wherein, The flow channel groove is a closed groove with a starting end coinciding with a terminal end.

3. The flow directing assembly of claim 1, wherein, The flow channel plate and the partition plate each comprise a square main body part; a fluid nozzle mounting part is arranged at one end of the square main body part of the flow channel plate and the partition plate; the liquid inlet is formed on the fluid nozzle mounting part of the partition plate; and the starting end of the flow channel groove is located at the fluid nozzle mounting part of the flow channel plate.

4. The flow directing assembly of claim 1, wherein, The flow channel groove comprises a square closed groove; the plurality of liquid outlets are symmetrically distributed along the flow channel groove.

5. The flow directing assembly of claim 1, wherein, The flow channel groove comprises a plurality of divergent grooves sharing one starting end and having respective terminal ends.

6. An electrochemical cell module comprising an array of electrochemical cells and end plates disposed at the ends of the array of electrochemical cells; wherein: The application further relates to the flow guide assembly as claimed in any one of claims 1-5, which is arranged on an end plate; the plurality of liquid outlets are directed towards the end plate and form diffusion grooves with the end plate.

7. The battery cell module of claim 6, wherein, The flow channel plate and the partition plate are fixedly connected to the end plate at positions avoiding the flow channel groove.

8. The battery cell module of claim 7, wherein, A fitting part is arranged in the middle of an end surface of the end plate; a plurality of diffusion grooves are arranged around the fitting part; the middle of the flow channel plate and the partition plate is fixedly connected to the fitting part; and the plurality of diffusion grooves are respectively connected to at least one liquid outlet.

9. The battery cell module of claim 8, wherein, A nut is embedded in the fitting part of the end plate; and the middle of the flow channel plate and the partition plate is fixedly connected to the nut through screw cooperation.

10. A battery box comprising a box body, a liquid inlet pipeline, a liquid outlet pipeline and a battery cell module arranged in the box body; characterized in that, The application further relates to the battery cell module as claimed in any one of claims 6-9, wherein a liquid inlet pipe is connected to the fluid nozzle; and a liquid outlet pipe is connected to a liquid outlet on the box.

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