Integrated liquid-cooled battery cell mounting structure

Abstract

The utility model provides an integrated liquid-cooled battery cell installation structure, which relates to the technical field of energy storage batteries, and comprises a battery cell module and a bottom support, the bottom support comprises a bottom plate, a liquid cooling channel arranged in the bottom plate and a water nozzle arranged on the bottom plate and communicated with the liquid cooling channel, and the bottom of the battery cell module is connected to the bottom plate through heat-conducting glue. The battery cell modules are borne by the bottom support integrated with the liquid cooling structure, the heat dissipation performance of the battery cell structure is effectively improved, a plurality of battery cell modules can be installed on the bottom support, a cover plate does not need to be installed, the installation occupied space is effectively saved, and meanwhile the good heat dissipation performance is ensured.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery technology, and in particular, it relates to an integrated liquid-cooled cell mounting structure. Background Technology

[0002] Energy storage power stations use a large number of lithium batteries, which are generally arranged in the form of battery clusters to form energy storage units with basic functions. A battery cluster typically includes multiple battery packs, each containing multiple battery cells; or it may be composed of multiple battery cells arranged in clusters.

[0003] In energy storage units, both installation space and heat dissipation performance requirements are very high. First, the installation space needs to be as small as possible to accommodate more battery cells and achieve greater energy storage capacity. Second, a high degree of heat dissipation is required to prevent abnormal temperature rise in some cells, which could lead to fire or even explosion. However, in practical applications, installation space and heat dissipation performance are contradictory. The installation of heat dissipation structures will inevitably occupy installation space. At the same time, the smaller the installation space occupied, the more battery cells there are in the unit, the stronger the temperature rise effect, and the more difficult it is to effectively dissipate heat.

[0004] To simultaneously achieve the goals of small installation space and good heat dissipation, an increasing number of energy storage unit structural designs are emerging. For example, Chinese utility model patent CN219246821U discloses a battery module, battery cluster, and energy storage system. The battery module includes: a lower housing; a cell stack comprising several cells, the cell stack being disposed on the lower housing; a pre-tightening force application component disposed on the surface of the cell stack; a buffer component disposed between two adjacent cells and in contact with the two adjacent cells; and a battery module electrical component disposed on the surface of the cell stack, used to achieve electrical connection between the cells. Compared to conventional battery pack designs, this battery module only requires the lower housing to support the cell stack, eliminating the need for a battery pack outer shell and module shells within the battery pack, thus reducing production and installation costs.

[0005] However, the above-mentioned battery model still has the following drawbacks: the buffer between two adjacent cells still occupies installation space and still blocks the heat dissipation of the cells, resulting in poor heat dissipation performance. Furthermore, the safety is still insufficient because the fire-fighting device acts on the cells in thermal runaway when thermal runaway occurs within the battery cluster.

[0006] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and efficient integrated liquid-cooled cell mounting structure. Utility Model Content

[0007] The purpose of this utility model is to provide an integrated liquid-cooled battery cell mounting structure. The battery cell module is supported by a base with an integrated liquid-cooled structure, which effectively improves the heat dissipation performance of the battery cell structure. Multiple battery cell modules can be installed on the base without the need for a cover plate, which effectively saves installation space while ensuring good heat dissipation performance.

[0008] To achieve the above objectives, this utility model employs the following technical solution:

[0009] An integrated liquid-cooled battery cell mounting structure includes a battery cell module and a base. The base includes a base plate, a liquid-cooling channel disposed within the base plate, and a water nozzle disposed on the base plate and communicating with the liquid-cooling channel. The bottom of the battery cell module is connected to the base plate by thermally conductive adhesive.

[0010] As a preferred embodiment of this invention, a blocking plate is provided at the end of the liquid cooling channel.

[0011] As a preferred embodiment of this invention, the number of liquid cooling channels is two, and the two liquid cooling channels are connected at the end away from the water nozzle.

[0012] As a preferred embodiment of this invention, the number of water nozzles is two, and the two water nozzles are respectively connected to two liquid cooling channels.

[0013] As a preferred embodiment of this utility model, a module crossbeam is provided on the base plate.

[0014] As a preferred embodiment of this invention, the base plate is provided with a limiting protrusion.

[0015] As a preferred embodiment of this invention, the number of battery cell modules is at least one; the number of limiting protrusions is at least two.

[0016] As a preferred embodiment of this invention, both the limiting protrusion sidewall and the upper surface of the base plate are provided with thermally conductive adhesive for connecting to the bottom of the battery cell module.

[0017] As a preferred embodiment of this utility model, the base plate is provided with fixing bolt holes.

[0018] As a preferred embodiment of this utility model, the base plate is an integrally formed part.

[0019] The beneficial effects of this utility model's integrated liquid-cooled cell mounting structure are as follows:

[0020] 1. The structure is simple. The battery cell module is directly installed on the base without the need for a cover plate. This also avoids the space occupied by the flange surface of the cover plate installation, making the entire battery cell installation structure occupy less space. More battery cells can be installed in a unit space, effectively increasing the energy density of the battery cell installation.

[0021] 2. Good scalability: Multiple battery cells can be installed on one base, forming a multi-cell module joint installation structure, which further increases the energy density of battery cell installation;

[0022] 3. Excellent heat dissipation: Liquid cooling channels and water nozzles are installed on the base. Liquid cooling medium is injected into the liquid cooling channels through the water nozzles and flows, effectively dissipating heat from the battery cell modules on the base. In addition, each battery cell module is equipped with a set of liquid cooling channels, which saves installation space while ensuring good heat dissipation performance.

[0023] 4. Good stability: The entire base plate and crossbeam of the base are welded together, and the battery cell modules are glued to the base with thermally conductive structural adhesive. The entire battery cell structure is installed stably, the thermal conductivity is also stable, and the safety is high. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an integrated liquid-cooled battery cell mounting structure according to this utility model.

[0025] Figure 2 This is a schematic diagram showing the overall structure disassembled in one embodiment of the integrated liquid-cooled battery cell mounting structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the base structure in one embodiment of an integrated liquid-cooled battery cell mounting structure according to this utility model;

[0027] Figure 4 This is a schematic diagram of the liquid cooling channel in one embodiment of an integrated liquid-cooled battery cell mounting structure according to the present invention.

[0028] Figure 5 This is a schematic diagram of the mounting structure of another embodiment of the integrated liquid-cooled battery cell mounting structure of this utility model;

[0029] Figure 6 This is a schematic diagram of the mounting structure of another embodiment of the integrated liquid-cooled battery cell mounting structure of this utility model;

[0030] In the diagram: 1. Base support, 11. Base plate, 12. Liquid cooling channel, 13. Water nozzle, 14. Blocking plate, 15. Module crossbeam, 151. Positioning hole, 16. Limiting protrusion, 17. Fixing bolt hole, 2. Battery cell module, 21. Thermal conductive adhesive. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement and steps of the modules and steps set forth in these embodiments do not limit the scope of the present invention.

[0033] At the same time, it should be understood that, for ease of description, the process shown in the attached diagram is not performed in isolation, but rather involves multiple steps that overlap.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0036] Techniques, methods, and systems known to a person skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the license specification.

[0037] Example 1: As Figures 1 to 4 As shown, this is only one embodiment of the present utility model. An integrated liquid-cooled battery cell mounting structure includes a battery cell module 2 and a base 1. The base 1 includes a base plate 11, a liquid cooling channel 12 disposed in the base plate 11, and a water nozzle 13 disposed on the base plate 11 and communicating with the liquid cooling channel 12. The bottom of the battery cell module 2 is connected to the base plate 11 by thermally conductive adhesive 21.

[0038] In this utility model, the battery cell module 2 is directly installed on the base 1. The battery cell module 2 does not need to be equipped with a shell and a cover plate. This also avoids the need to use a flange to connect the two covers, which would occupy extra space. In this way, the entire battery cell installation structure occupies less space and requires less space for installation, making it more convenient and faster to install the battery cells. At the same time, it can also increase the energy density of the battery cells installed per unit space.

[0039] Here, the base 1 includes a base plate 11, a liquid cooling channel 12 disposed within the base plate 11, and a water nozzle 13 disposed on the base plate 11 and communicating with the liquid cooling channel 12. Furthermore, the base plate 11 is a long strip plate, and the liquid cooling channel 12 also extends along the extension direction of the long strip base plate 11, so that there is as long a liquid cooling channel 12 as possible on the base plate 11, effectively dissipating heat from the base plate 11 and the battery cell module 2 disposed on the base plate 11.

[0040] In this way, after the battery cell module 2 is installed on the base plate 1, the liquid cooling medium (water or oil) is injected into the liquid cooling channel 12 in the base plate 11 through the water nozzle 13, which can effectively cool the battery cell module 2.

[0041] In one embodiment of this utility model, there are two liquid cooling channels 12, which are arranged in parallel and connected at the ends away from the water nozzles 13. There are also two water nozzles 13, which are connected to the two liquid cooling channels 12 respectively. In this way, the liquid cooling medium (water or oil) enters the first liquid cooling channel 12 from the first water nozzle 13, reaches the end of the first liquid cooling channel 12 away from the water nozzle 13, and then flows into the second liquid cooling channel 12. Finally, it flows out from the water nozzle 13 on the second liquid cooling channel 12. During the flow of the liquid cooling medium, it exchanges heat with the upper surface of the base plate 11, carrying away the heat generated by the battery module 2 on the base plate 11.

[0042] Of course, the bottom of the battery cell module 2 is connected to the base plate 11 through thermally conductive adhesive 21. Firstly, the bottom of the battery cell module 2 is stably connected to the base plate 11, and secondly, heat conduction can be effectively carried out, so that the heat generated by the battery cell module 2 can be conducted to the base plate 11 for heat exchange with the liquid cooling medium.

[0043] Example 2, still as Figures 1 to 4 As shown, this is only one embodiment of the present invention. Based on the first embodiment, in the integrated liquid-cooled cell mounting structure of the present invention, a blocking plate 14 is provided at the end of the liquid cooling channel 12. The blocking plate 14 closes the end of the liquid cooling channel 12, so that the liquid cooling medium can only flow through the water nozzle 13 in the liquid cooling channel 12.

[0044] Furthermore, a module crossbeam 15 is provided on the base plate 11. The module crossbeam 15 is located at the end of the cell module 2. There are two module crossbeams 15, which are respectively located at both ends of the cell module 2. This serves two purposes: firstly, to increase the structural strength of the entire base plate 11, and secondly, to restrict the installation position of the cell module 2.

[0045] In one embodiment of this utility model, the module beam 15 is provided with positioning holes 151 for facilitating the installation of the battery cell module 2, so that the battery cell module 2 can be effectively installed on the base 1.

[0046] In addition, the base plate 11 is provided with a limiting protrusion 16. In fact, the extension direction of the limiting protrusion 16 is perpendicular to the module crossbeam 15. There are two limiting protrusions 16, which are respectively provided on both sides of the battery cell module 2, in order to limit the installation position of the battery cell module 2.

[0047] In fact, the two module crossbeams 15 and the two limiting protrusions 16 form a rectangular space on the base plate 11, and the bottom surface of the battery cell module 2 is installed into this rectangular space by thermally conductive structural adhesive.

[0048] Of course, the sidewall of the limiting protrusion 16 and the upper surface of the base plate 11 are both provided with thermally conductive adhesive 21 for connecting with the bottom of the battery cell module 2.

[0049] It should be noted that the base plate 11 is a one-piece molded part. In fact, the base plate 11 and the limiting protrusion 16 are integrally molded after profile extrusion at the factory. Furthermore, the base plate 11, water nozzle 13, plug 14, and module crossbeam 15 on the base support 1 are all welded together. The entire base support 1 tooling is inexpensive and the process is simple.

[0050] Example 3, as Figures 1 to 6 As shown, this is only one embodiment of the present utility model. Based on any of the above embodiments, in the integrated liquid-cooled battery cell mounting structure of the present utility model, the number of battery cell modules 2 is at least one, that is, multiple battery cell modules 2 can be provided on a base 1; and in order to provide multiple battery cell modules 2, the number of limiting protrusions 16 is at least two.

[0051] When there are two battery cell modules 2 on a base 1, there are three limiting protrusions 16, with limiting protrusions 16 on both sides of each battery cell module 2, and four module crossbeams 15, with one module crossbeam 15 at each end of each battery cell module 2; when there are three battery cell modules 2 on a base 1, there are four limiting protrusions 16, with limiting protrusions 16 on both sides of each battery cell module 2, and six module crossbeams 15, with one module crossbeam 15 at each end of each battery cell module 2, such as... Figure 5 As shown.

[0052] Here, the height of the limiting protrusion 16 is slightly higher than the height of the module crossbeam 15.

[0053] In addition to limiting the installation position of the battery cell module 2, the limiting protrusion 16 also serves to separate two adjacent battery cell modules 2.

[0054] In this invention, when multiple battery cell modules 2 are mounted on a base 1, multiple sets of liquid cooling channels 12 can be provided, meaning that the liquid cooling channel 12 on the underside of each battery cell module 2 is independently provided. The advantage of this is that a thermometer can be installed at each battery cell module 2 to control whether to introduce liquid cooling medium for heat exchange and to adjust the flow rate of the liquid cooling medium based on the real-time temperature of each battery cell module 2. Alternatively, the entire base plate 11 can be configured as a continuous liquid cooling channel 12, meaning that a single, meandering liquid cooling channel 12 can simultaneously dissipate heat from multiple battery cell modules 2 on the base plate 11. The advantage of this is that only two water inlets 13 are needed. Figure 5 As shown, this saves costs.

[0055] Finally, the base plate 11 is provided with fixing bolt holes 17. The base plate 11 is installed on the battery rack by fixing bolts passing through the fixing bolt holes 17. Several fixing bolt holes 17 are evenly arranged on the outside of the rectangular space enclosed by the two module crossbeams 15 and the two limiting protrusions 16, making the installation of the entire base plate 11 more stable.

[0056] The battery rack can have multiple base supports 1, or even a multi-layer base support 1 structure, with multiple layers of battery cell modules 2, such as... Figure 6 As shown.

[0057] In summary, since the cover plate on the upper side of the battery cell module 2 is eliminated, space is saved, allowing for the installation of more layers of battery cell modules 2. Furthermore, the base 2 can be expanded laterally, with multiple battery cell modules 2 mounted on each base 2, significantly increasing the installation density of battery cell modules 2 within a unit space. At the same time, liquid cooling channels 12 are provided on the lower side of each battery cell module 2 for effective heat dissipation. In the case of multiple layers of battery cell modules 2, the liquid cooling base plate 11 of one layer can also effectively dissipate and cool the upper side of the battery cell module 2 of the next layer, thus saving installation space while ensuring good heat dissipation performance.

[0058] This utility model discloses an integrated liquid-cooled battery cell mounting structure. The battery cell module is supported by a base with an integrated liquid-cooled structure, which effectively improves the heat dissipation performance of the battery cell structure. Multiple battery cell modules can be installed on the base without the need for a cover plate, which effectively saves installation space while ensuring good heat dissipation performance.

[0059] This utility model is not limited to the specific embodiments described above, and various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made to the above embodiments based on the technical essence of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated liquid-cooled cell mounting structure, characterized in that: The battery module (2) includes a base plate (1) and a base plate (1). The base plate (1) includes a base plate (11), a liquid cooling channel (12) disposed in the base plate (11), and a water nozzle (13) disposed on the base plate (11 and communicating with the liquid cooling channel (12). The bottom of the battery module (2) is connected to the base plate (11) by thermally conductive adhesive (21).

2. The integrated liquid-cooled cell mounting structure according to claim 1, characterized in that: A blocking plate (14) is provided at the end of the liquid cooling channel (12).

3. The integrated liquid-cooled cell mounting structure according to claim 1, characterized in that: The number of liquid cooling channels (12) is two, and the two liquid cooling channels (12) are connected at the end away from the water nozzle (13).

4. The integrated liquid-cooled cell mounting structure according to claim 3, characterized in that: The number of water nozzles (13) is two, and the two water nozzles (13) are respectively connected to two liquid cooling channels (12).

5. The integrated liquid-cooled cell mounting structure according to claim 1, characterized in that: A module crossbeam (15) is provided on the base plate (11).

6. The integrated liquid-cooled cell mounting structure according to claim 1, characterized in that: The base plate (11) is provided with a limiting protrusion (16).

7. The integrated liquid-cooled cell mounting structure according to claim 6, characterized in that: The number of the battery cell module (2) is at least one; the number of the limiting protrusions (16) is at least two.

8. The integrated liquid-cooled cell mounting structure according to claim 6, characterized in that: The sidewall of the limiting protrusion (16) and the upper surface of the bottom plate (11) are both provided with thermally conductive adhesive (21) for connecting to the bottom of the battery cell module (2).

9. The integrated liquid-cooled cell mounting structure according to claim 1, characterized in that: The base plate (11) is provided with fixing bolt holes (17).

10. The integrated liquid-cooled cell mounting structure according to claim 1, characterized in that: The base plate (11) is a one-piece molded part.

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