CN209282260U - A kind of soaking pattern group floor structure - Google Patents

Abstract

The utility model discloses a heat uniform module bottom plate structure, which comprises a bottom plate body made of heat-conducting material; the outer contour of the bottom plate body is rectangular, and the four corners of the bottom plate body are all formed with vacant positions for assembly and positioning The outer surface of the bottom plate body is also provided with an installation groove for installing the water row, and the installation groove is arranged along the longitudinal direction of the bottom plate body and sinks on the top of the bottom plate body; along the longitudinal direction of the bottom plate body, a There are several equalization holes for uniform heat transfer. The utility model has the advantages of realizing uniform heat management, light weight of the product, convenient positioning, good contact effect of water discharge, saving vertical space, and the like.

Description

A heat uniform module bottom plate structure

technical field

The utility model relates to a power battery, in particular to a heat-soaking type module bottom plate structure.

Background technique

With the development of society, the global demand for energy utilization is getting higher and higher. As a country with a large population, my country has a greater demand for energy and a faster rate of energy consumption. As a non-renewable energy source, oil is currently facing depletion. Moreover, the use of oil as the main vehicle power source also has a great impact on the environment, especially the global greenhouse effect. In recent years, the domestic smog problem has become more and more serious. It has become more and more serious, and the scope of the spread has also continued to spread from the north to the south. Therefore, it is imminent to find an energy source that can replace petroleum.

As a renewable new energy source, power batteries can store wind power, solar energy, and nighttime surplus electricity in daily life, and then use electrical appliances, which have become more and more popular. However, as the application areas of power batteries become more and more extensive, the application environment requirements of power batteries are also getting higher and higher, including high temperature and low temperature environments. In the high-power driving environment of the vehicle, the power battery pack must have good thermal control performance to ensure the safety of the power battery. However, at present, the pouch battery module is difficult to ensure that the cells on both sides of the bottom of the module are thermally managed and controlled by the water-cooled plate, or the bottom water-cooled plate needs to be made into a special shape, which cannot be directly processed by aluminum extrusion. Subsequent additional processing will lead to complex processing of the water-cooled plate at the bottom of the module and high production costs.

Utility model content

The purpose of the utility model is to provide a module bottom plate structure that can effectively manage and control the heat evenly on the bottom of the entire battery module when the drain width of the battery pack is narrow.

In order to achieve the above object, the utility model adopts the following technical solutions:

A heat uniform module bottom plate structure, in particular, includes a bottom plate body made of heat-conducting materials; the outer contour of the bottom plate body is rectangular, and the four corners of the bottom plate body are formed with evacuation positions for assembly and positioning; the bottom plate The outer surface of the body is also provided with an installation groove for installing the drain, which is arranged along the longitudinal direction of the bottom plate body and sinks on the top of the bottom plate body; Equal temperature holes for uniform heat transfer.

When the base plate structure of this module is assembled with the semi-finished battery module, the vacant spaces provided at the four corners of the base plate body can be used to cooperate with the convex corners on the surface of the semi-finished battery module to realize the positioning calibration of the base plate structure of this module. At the same time, the water drain and thermal pad can be embedded in the installation groove. Based on the sinking design of the installation groove, it not only saves the installation space of the water drain, but also increases the contact area between the water drain and the bottom plate body, strengthening the connection between the bottom plate body and Heat exchange efficiency between drains. The uniform temperature holes set in the bottom plate body can effectively adjust the heat transfer effect of the bottom plate body itself, avoiding the problem that it is difficult to obtain good thermal management control in the areas of the bottom plate body located on both sides of the installation groove due to the limited width of the existing water drain , ensuring uniform heat transfer throughout the bottom plate body.

Preferably, the temperature uniform hole is a through hole, and the temperature uniform hole runs through the entire bottom plate body along the longitudinal direction of the bottom plate body, thereby greatly reducing the product weight and effectively achieving the purpose of product lightweight.

Preferably, the temperature uniform holes are arranged side by side along the transverse direction of the bottom plate body. Further, in the transverse direction of the bottom plate body, the number of the uniform temperature holes gradually increases along the direction from the middle of the bottom plate body to both sides of the bottom plate body, that is, within a unit area, the number of temperature uniform holes located in the middle of the bottom plate body is less than The number of uniform temperature holes located on the side of the bottom plate body. Furthermore, in the transverse direction of the base plate body, the inner diameter of the uniform temperature hole gradually decreases along the direction from the middle of the base plate body to both sides of the base plate body. In this way, the base plate structure of the module can ensure a good uniform heat management effect.

Preferably, the module bottom plate is designed in one piece and can be made by aluminum extrusion process, so as to reduce the production cost of the module bottom plate structure.

Preferably, along the longitudinal direction of the base plate body, the side wall of the base plate body is a side wall for welding. When the base plate structure of the module is assembled with the semi-finished battery module, the base plate structure of the module can be connected with the battery module through the laser welding process. The semi-finished products are assembled together to ensure the safety and reliability of the product structure.

The utility model has the advantages of realizing uniform heat management, light weight of the product, convenient positioning, good contact effect of water discharge, saving vertical space, and the like.

Description of drawings

Fig. 1 is the schematic diagram of module bottom plate structure in the utility model embodiment;

Fig. 2 is a schematic diagram of cooperation between the module bottom plate structure and the battery module semi-finished product in Embodiment 1 of the present utility model;

Fig. 3 is a schematic diagram of cooperation between the module bottom plate structure and the drain in Embodiment 1 of the present utility model.

Explanation of reference numerals: 1-bottom plate body; 2-avoidance position; 3-installation groove;

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The module bottom plate structure shown in FIGS. 1-3 is made of a bottom plate body 1 . The bottom plate body 1 is made of heat-conducting material, the outer contour of the bottom plate body 1 is rectangular, and the four corners of the bottom plate body 1 are formed with vacant places 2 for assembly and positioning. The outer surface of the bottom plate body 1 is provided with an installation groove 3 for installing a drain. The installation groove 3 is a square groove, arranged along the longitudinal direction of the bottom plate body 1 and sunk on the top of the bottom plate body 1 .

Along the longitudinal direction of the bottom plate body 1 , there are several temperature uniform holes 4 arranged side by side along the horizontal direction of the bottom plate body 1 inside the bottom plate body 1 . The temperature uniform hole 4 is a through hole, and the temperature uniform hole 4 runs through the entire bottom plate body 1 along the longitudinal direction of the bottom plate body 1 . As shown in the figure, in the transverse direction of the base plate body 1, the number of the uniform temperature holes 4 gradually increases along the direction from the middle of the base plate body 1 to both sides of the base plate body 1, that is, within a unit area, it is located near the middle of the base plate body 1 The number of uniform temperature holes 4 is less than the number of temperature uniform holes 4 located near both sides of the bottom plate body 1 . Moreover, in the transverse direction of the bottom plate body 1, the inner diameter of the uniform temperature hole 4 is gradually decreasing along the direction from the middle of the bottom plate body 1 to both sides of the bottom plate body 1, that is to say, the temperature equalization holes located near both sides of the bottom plate body 1 The inner diameter of 4 is smaller than the inner diameter of the uniform temperature hole 4 located near the middle of the bottom plate body 1, so that the module bottom plate structure can ensure a good uniform heat management effect.

In this embodiment, the bottom plate of the module is designed in one piece, and is made by aluminum extrusion molding process, so that the product obtained in this way has better structural rigidity and lower production cost.

In this embodiment, along the longitudinal direction of the base plate body 1, the side wall 5 of the base plate body 1 is a side wall for welding. When the base plate structure of this module is assembled with the semi-finished battery module, the base plate structure of this module can be welded by laser welding. It is assembled with the semi-finished battery module to ensure the safety and reliability of the product structure.

As shown in Figures 2 to 3, when the base plate structure of this module is assembled with the semi-finished battery module, the space 2 provided at the four corners of the base plate body 1 can be used to cooperate with the surface convex corners 6 of the semi-finished battery module to realize this Positioning and calibration of the module base plate structure. At the same time, the water drain 7 and the thermal pad 8 can be embedded in the installation groove 3. Based on the sinking design of the installation groove 3, it not only saves the installation space of the water drain, but also increases the contact area between the water drain and the bottom plate body 1. The heat exchange efficiency between the bottom plate body 1 and the water row is enhanced. The uniform temperature hole 4 arranged in the base plate body 1 effectively adjusts the heat transfer effect of the base plate body 1 itself, avoiding that the area of the base plate body 1 located on both sides of the installation groove 3 is difficult to obtain due to the limited width of the existing water drain. The issue of thermal management control ensures that the heat transfer of the entire bottom plate body 1 is uniform.

What this specification lists are only the preferred implementation modes of the utility model, and all equivalent technical transformations made under the working principle and thinking of the utility model are regarded as the protection scope of the utility model.

Claims (7)

1. A heat-soaking module bottom plate structure is characterized in that: it includes a bottom plate body made of heat-conducting material; the outer contour of the bottom plate body is rectangular, and the four corners of the bottom plate body are all formed with avoidance holes for assembly and positioning. vacancy; the outer surface of the bottom plate body is also provided with an installation groove for installing the water row, and the installation groove is arranged along the longitudinal direction of the bottom plate body and sinks on the top of the bottom plate body; along the longitudinal direction of the bottom plate body, inside the bottom plate body There are several uniform temperature holes for uniform heat transfer. 2. The heat uniform module bottom plate structure according to claim 1, wherein the temperature uniform hole is a through hole, and the temperature uniform hole penetrates the entire bottom plate body along the longitudinal direction of the bottom plate body. 3. The heat-spreading module bottom plate structure according to claim 1, wherein the temperature-spreading holes are arranged side by side along the transverse direction of the bottom plate body. 4. The heat uniform module bottom plate structure according to claim 3, characterized in that: in the transverse direction of the bottom plate body, the number of the temperature equalization holes gradually increases along the direction from the middle of the bottom plate body to both sides of the bottom plate body . 5. The heat equalizing module bottom plate structure according to claim 4, characterized in that: in the transverse direction of the bottom plate body, the inner diameter of the temperature equalizing hole is gradually decreasing along the direction from the middle of the bottom plate body to both sides of the bottom plate body . 6. The heat equalizing module bottom plate structure according to claim 1, characterized in that: the module bottom plate structure is designed in one piece. 7. The heat soaking type module bottom plate structure according to claim 1, characterized in that: along the longitudinal direction of the bottom plate body, the side walls of the bottom plate body are side walls for welding.