CN218414899U - Power battery pack module with high heat dissipation performance - Google Patents

Abstract

The utility model discloses a power battery pack module with high heat dissipation, which relates to the technical field of power batteries, and comprises a casing. An expansion board is installed on the upper end of the casing. The expansion board has a ring structure and extends toward the outside of the casing. An outer liquid storage tank is fixedly sleeved on the outer surface of the housing, a liquid inlet pipe is installed at the left end of the outer liquid storage tank, a liquid outlet pipe is installed at the right end of the outer liquid storage tank, and an inner liquid storage tank is fixedly installed on the inner wall of the outer liquid storage tank. A liquid storage tank, the inner cavity of the inner liquid storage tank communicates with the inner cavity of the outer liquid storage tank, the inner liquid storage tank is located inside the shell, the inner liquid storage tank has a rake-like structure, and the inside of the shell is provided with A plurality of electric cores, the several electric cores are all distributed around the inner liquid storage tank, and a cover plate is installed on the upper end of the shell. The utility model realizes rapid heat dissipation of the electric core by setting the external liquid storage tank and the internal liquid storage tank, and the internal liquid storage tank is also used to separate the electric core, which not only increases the contact area between the internal liquid storage tank and the electric core, but also improves The stability of the battery cell.

Description

A power battery pack module with high heat dissipation

technical field

The utility model relates to the technical field of power batteries, in particular to a power battery pack module with high heat dissipation.

Background technique

The battery cell is the smallest unit of a power battery and also an electric energy storage unit. It must have a high energy density to store as much electric energy as possible, so that the electric vehicle has a longer cruising range. In addition, the service life of the battery cell is also the most critical factor. The damage of any battery cell will lead to the damage of the entire battery pack. When multiple batteries are packaged together by the same shell frame and communicate with the outside through a unified boundary, this forms a module. When several modules are jointly controlled or managed by the BMS and the thermal management system, this unified whole is called a battery pack.

During the charging and discharging process, the power battery will release a certain amount of heat with the intensity of the chemical reaction. The negative electrode, electrolyte and battery separator inside the power battery are all combustible, and the ignition point of the electrolyte is very low. Therefore, if the power battery pack does not do a good job in thermal management, it will not only easily damage the battery, but also easily cause combustion. ACCIDENT.

Referring to the existing patent (Application No. 202011387714.4), a high heat dissipation power battery is disclosed, the tops of the first support plate and the second support plate are fixedly connected with a second box, and the first box and the second One side of the box is fixed with a liquid injection port, and the other side of the first box and the second box are fixed with a liquid outlet, and the top and bottom of the power battery are equipped with heat dissipation components. The outside of the power battery is socketed with a limit assembly.

The above-mentioned patent realizes heat dissipation of the power battery by inputting cooling water, but the power battery can only transfer heat to the cooling water through the upper or lower heat collecting strips and heat conducting plates, and the heat generated by other parts of the power battery cannot be quickly transferred to the cooling water. The overall heat dissipation efficiency of the power battery is low.

Utility model content

The main purpose of the utility model is to provide a power battery pack module with high heat dissipation, which can effectively solve the problems in the background technology.

In order to achieve the above object, the technical scheme that the utility model takes is:

A power battery pack module with high heat dissipation, comprising a casing, an expansion plate is installed on the upper end of the casing, the expansion plate has a ring structure and extends toward the outside of the casing, and an external liquid storage is fixedly sleeved on the outer surface of the casing tank, the left end of the outer liquid storage tank is equipped with a liquid inlet pipe, the right end of the outer liquid storage tank is equipped with a liquid outlet pipe, the inner wall of the outer liquid storage tank is fixedly installed with an inner liquid storage tank, and the inner liquid storage tank The inner cavity communicates with the inner cavity of the outer liquid storage tank, the inner liquid storage tank is located inside the shell, the inner liquid storage tank has a rake-like structure, and several battery cells are arranged inside the shell, and several of the battery cells They are all distributed around the inner liquid storage tank, and a cover plate is installed on the upper end of the shell.

Preferably, the inner liquid storage tank includes vertical partitions, and there are several vertical partitions, the several vertical partitions are distributed in a linear array, and the left and right adjacent vertical partitions A horizontal partition is fixedly connected between them, and the horizontal partition and two adjacent vertical partitions jointly enclose a storage compartment.

Preferably, the battery cell is located in the storage compartment, and the size specification of the battery cell matches the size specification of the storage compartment.

Preferably, the size specification of the vertical partition matches the size specification of the inner chamber of the casing.

Preferably, insulating plates are installed on the lower wall of the inner cavity of the housing and the lower end of the cover plate.

Preferably, the lower end of the expansion plate is fixedly connected to the upper end of the external liquid storage tank, and the shape of the expansion plate matches the shape of the external liquid storage tank.

Compared with the prior art, the utility model has the following beneficial effects:

1. The rapid heat dissipation of the battery core is realized by setting the external liquid storage tank and the internal liquid storage tank. Firstly, the cooling liquid is input through the liquid inlet pipe, and the cooling liquid enters the internal liquid storage tank through the external liquid storage tank. The internal liquid storage tank is closely connected with the battery cell. Contact, when the battery core is running, the heat generated by it is transmitted to the inner liquid storage tank, and exchanges heat with the coolant inside the inner liquid storage tank, so as to realize the rapid dissipation of heat from the battery core, and the heated coolant is discharged through the liquid outlet pipe , at the same time, the outer liquid storage tank wraps the entire shell, and the internal coolant exchanges heat with the shell to realize the overall cooling of the battery pack;

2. By setting the inner liquid storage tank to separate the battery cells, it not only increases the contact area between the inner liquid storage tank and the battery cells, but also improves the stability of the battery cells, avoids the displacement of the battery cells, and improves the practicability.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is an exploded view of the overall structure of the utility model;

Fig. 3 is a schematic diagram of the three-dimensional structure of the inner liquid storage tank;

Fig. 4 is a schematic diagram of the three-dimensional structure of the inner liquid storage tank and the outer liquid storage tank;

Fig. 5 is a schematic cross-sectional structure diagram of the inner liquid storage tank and the outer liquid storage tank.

In the figure: 1. shell; 2. expansion board; 3. external liquid storage tank; 4. liquid inlet pipe; 5. liquid outlet pipe; 6. inner liquid storage tank; 7. battery cell; 8. cover plate; Vertical partition; 62, horizontal partition; 63, storage bin.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by ", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, so as to Specific orientation configurations and operations, therefore, should not be construed as limitations on the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise specified and limited, the terms "installed", "set with", "connected", etc. should be understood in a broad sense, such as "connected", which can be a fixed The connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

As shown in Figure 1 and Figure 2, a high heat dissipation power battery pack module includes a housing 1, as a specific implementation, the housing 1 described in this embodiment has a flat rectangular structure, the housing 1 is installed with an expansion board 2. As a specific implementation, the four corners of the expansion board 2 described in this embodiment are all provided with a right-angle structure. The outer surface of the shell 1 is fixedly sleeved with an outer liquid storage tank 3. As a specific embodiment, the outer liquid storage tank 3 described in this embodiment has a ring structure, and the left end of the outer liquid storage tank 3 is installed with a liquid inlet Pipe 4, the right end of the outer liquid storage tank 3 is equipped with a liquid outlet pipe 5, the inner wall of the outer liquid storage tank 3 is fixedly installed with an inner liquid storage tank 6, and the inner cavity of the inner liquid storage tank 6 is connected to the outer liquid storage tank The inner cavities of 3 communicate with each other, the inner liquid storage tank 6 is located inside the shell 1, and the inner liquid storage tank 6 has a rake-like structure, and several battery cells 7 are arranged inside the shell 1, and several battery cells 7 They are all distributed around the inner liquid storage tank 6 , and a cover plate 8 is installed on the upper end of the casing 1 .

As shown in Fig. 3, Fig. 4 and Fig. 5, the inner liquid storage tank 6 includes a vertical partition 61, and several vertical partitions 61 are provided. As a specific implementation mode, the There are eight vertical partitions 61 described above, and the vertical partitions 61 on both sides are completely attached to the inner wall of the housing 1. The eight vertical partitions 61 are distributed in a linear array, and the two vertical partitions adjacent to the left and right A horizontal partition 62 is fixedly connected between the partitions 61, and the horizontal partition 62 and its two adjacent vertical partitions 61 jointly form a storage bin 63. As a specific embodiment, this embodiment There are fourteen placement bins 63 described in the example.

Further, the battery cell 7 is located in the storage bin 63, and the size specification of the battery cell 7 matches the size specification of the storage bin 63. As a specific implementation mode, the battery cell 7 and the storage box described in this embodiment Thermal conductive silica gel is filled between the placement bins 63 .

Further, the size specification of the vertical partition 61 matches the size specification of the inner chamber of the casing 1 .

Further, insulating plates are installed on the lower wall of the inner cavity of the housing 1 and the lower end of the cover plate 8 .

Further, the lower end of the expansion board 2 is fixedly connected to the upper end of the outer liquid storage tank 3 , and the shape of the expansion board 2 matches the shape of the outer liquid storage tank 3 .

It should be noted that the utility model is a power battery pack module with high heat dissipation. By setting the outer liquid storage tank 3 and the inner liquid storage tank 6, the rapid heat dissipation of the battery cell 7 is realized, and the cooling is first input through the liquid inlet pipe 4. The cooling liquid enters the inner liquid storage tank 6 through the outer liquid storage tank 3, and the inner liquid storage tank 6 is in close contact with the battery cell 7. When the battery cell 7 is running, the heat generated by it is transmitted to the inner liquid storage tank 6, and is connected with the inner liquid storage tank 6. The coolant inside the liquid storage tank 6 performs heat exchange to realize the rapid heat dissipation of the battery cell 7. The heated coolant is discharged through the liquid outlet pipe 5. At the same time, the outer liquid storage tank 3 wraps the entire shell 1, and the internal The cooling liquid exchanges heat with the casing 1 to realize the overall cooling of the battery pack; by setting the inner liquid storage tank 6 to separate the battery cell 7, not only the contact area between the inner liquid storage tank 6 and the battery cell 7 is increased, but also the The stability of the battery cell 7 prevents the battery cell 7 from being displaced, thereby improving practicability.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a power battery package module of high heat dissipating, includes shell (1), its characterized in that: expansion board (2) are installed to shell (1) upper end, expansion board (2) are the loop configuration, and extend outside shell (1), shell (1) surface fixing cover has connect outer liquid storage tank (3), feed liquor pipe (4) are installed to outer liquid storage tank (3) left end, drain pipe (5) are installed to outer liquid storage tank (3) right-hand member, liquid storage tank (6) in outer liquid storage tank (3) inner wall fixed mounting, the inner chamber of interior liquid storage tank (6) communicates with each other with the inner chamber of outer liquid storage tank (3), interior liquid storage tank (6) are located inside shell (1), interior liquid storage tank (6) are harrow column structure, shell (1) inside is provided with a plurality of electricity core (7), a plurality of around liquid storage tank (6) including electricity core (7) all with distributing, apron (8) are installed to shell (1) upper end.

2. The power battery pack module with high heat dissipation performance as set forth in claim 1, wherein: the inner liquid storage tank (6) comprises vertical separating parts (61), the vertical separating parts (61) are provided with a plurality of vertical separating parts (61), the vertical separating parts (61) are distributed in a linear array mode, a horizontal separating part (62) is fixedly connected between the two vertical separating parts (61) adjacent to the left and the right, and a storage bin (63) is formed by the horizontal separating part (62) and the two vertical separating parts (61) adjacent to the horizontal separating part in a surrounding mode.

3. The power battery pack module with high heat dissipation performance as set forth in claim 2, wherein: the battery cell (7) is located in the placing bin (63), and the size specification of the battery cell (7) is matched with that of the placing bin (63).

4. The power battery pack module with high heat dissipation performance as set forth in claim 3, wherein: the size of the vertical separating part (61) is matched with the size of the inner cavity of the shell (1).

5. The power battery pack module with high heat dissipation performance as set forth in claim 4, wherein: and insulating plates are arranged at the lower wall of the inner cavity of the shell (1) and the lower end of the cover plate (8).

6. The power battery pack module with high heat dissipation performance as set forth in claim 5, wherein: the lower end of the expansion plate (2) is fixedly connected with the upper end of the outer liquid storage tank (3), and the shape of the expansion plate (2) is matched with that of the outer liquid storage tank (3).

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