Power battery cover plate assembly convenient to connect

Abstract

The utility model discloses a power battery cover plate assembly convenient to connect, relates to the technical field of power battery parts, and solves the problems that an existing power battery shell is troublesome to install, high-temperature gas cannot be exhausted upwards during thermal runaway, and deformation and explosion in a cover body are easily caused. Comprising a cover plate body, the cover plate body comprises a liquid cooling plate abutting against the lower side face of the cover plate body, a cooling liquid flow channel is formed in the liquid cooling plate, the liquid cooling plate is connected with a cooling liquid inlet and a cooling liquid outlet, and the cooling liquid inlet and the cooling liquid outlet are communicated with the two ends of the cooling liquid flow channel respectively; a plurality of exhaust ports are further formed in the lower side of the liquid cooling plate, a plurality of exhaust flow channels are formed in the upper side of the liquid cooling plate, the exhaust ports are distributed in the corresponding exhaust flow channels, a main exhaust port is connected to the cover body plate, and the main exhaust port is downwards communicated with the corresponding exhaust flow channels. And a liquid cooling device and an exhaust device are arranged in the cover body, so that the effects of conveniently cooling during high-temperature working and exhausting during thermal runaway are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery parts, and in particular to a power battery cover plate assembly that is easy to connect. Background Art

[0002] At present, energy and environmental protection issues are the focus of great social attention. New energy vehicles have been rapidly developed and applied in this context. In the development of new energy vehicles, batteries are an important component. With the development of the times, the need for energy conservation and environmental protection has promoted their development and application. Improving the quality of batteries and optimizing the production process are of great significance to promoting the development of the new energy industry.

[0003] However, the existing power battery housing, cover assembly and heat dissipation assembly are separately arranged, which makes the installation of the cover assembly on the lower tray more troublesome. In addition, when thermal runaway occurs, the high-temperature gas cannot be discharged upward, which can easily cause deformation and explosion inside the cover. Utility Model Content

[0004] The utility model aims to provide a power battery cover plate assembly that is easy to connect and can be easily installed. Liquid cooling and exhaust devices are arranged in the cover body to facilitate cooling when working at high temperatures and exhaust in case of thermal runaway.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A power battery cover plate assembly that is easy to connect, comprising a cover plate body, wherein the cover plate body comprises a liquid cooling plate abutting against a lower side thereof, a cooling liquid flow channel is provided in the liquid cooling plate, and the liquid cooling plate is connected with a cooling liquid inlet and a cooling liquid outlet, wherein the cooling liquid inlet and the cooling liquid outlet are respectively connected with two ends of the cooling liquid flow channel;

[0007] The lower side of the liquid cooling plate is also provided with a plurality of exhaust ports, and the upper side of the liquid cooling plate is provided with a plurality of exhaust channels, the exhaust ports are distributed on the corresponding exhaust channels, and the cover plate is connected with a main exhaust port, which is downwardly connected to the corresponding exhaust channels.

[0008] By adopting the above technical solution, a liquid cooling plate is installed in the cover plate, and a coolant flow channel and an exhaust flow channel are opened in the liquid cooling plate at the same time, which is convenient for installation. The installation of the liquid cooling component and the exhaust device can be completed by installing the cover plate. The coolant flow channel is convenient for cooling when working at high temperature, and the exhaust flow channel is convenient for exhaust in case of thermal runaway.

[0009] Furthermore, one side of the coolant flow channel is serpentine-shaped, and the other side is serpentine-shaped symmetrically arranged therewith. One end of the two serpentine flow channels are interconnected, and the other end is connected to the corresponding coolant inlet or coolant outlet.

[0010] By adopting the above technical solution, the serpentine coolant flow channel can not only improve the heat dissipation effect, but also facilitate the arrangement of the exhaust flow channel in the remaining position in the middle.

[0011] Furthermore, the main exhaust port is located in the middle of the plurality of exhaust ports.

[0012] By adopting the above technical solution, it is convenient to discharge hot air at various locations.

[0013] Furthermore, the exhaust flow channel is arranged in an I-shape or a W-shape, bypassing the serpentine coolant flow channel, and each end of the I-shape or the W-shape is connected downwardly to the exhaust port, and the middle part is connected upwardly to the main exhaust port.

[0014] By adopting the above technical solution, it is convenient to correspond to different battery chambers, discharge the internal hot air, and prevent the occurrence of problems such as air cross-talk or bulging.

[0015] Furthermore, the cooling liquid flow channel on the liquid cooling plate is opened on the upper side thereof, and the end thereof gradually tilts downward and is connected to the corresponding cooling liquid inlet or cooling liquid outlet.

[0016] By adopting the above technical solution, it is convenient to mill out the coolant flow channel on the liquid cooling plate, and then connect it to the coolant inlet or the coolant outlet, and cooperate with the cover plate body to realize the circulation of the coolant flow channel.

[0017] Furthermore, the exhaust flow channel on the liquid cooling plate is opened on the upper side thereof.

[0018] By adopting the above technical solution, it is convenient to mill the exhaust flow channel on the liquid cooling plate, and cooperate with the cover plate body to realize the circulation of the exhaust flow channel.

[0019] Furthermore, the liquid cooling plate is detachably connected to the lower side of the cover body by screws.

[0020] By adopting the above technical solution, the connection and disassembly between the coolant plate and the cover plate body are facilitated.

[0021] Furthermore, the cover body is connected to two opposite sides with downward mounting edges, and the mounting edges are detachably connected to the lower tray.

[0022] By adopting the above technical solution, it is convenient to install the cover body as a whole on the lower tray.

[0023] In summary, the utility model has the following beneficial effects:

[0024] In the existing power battery housing, the cover plate assembly and the heat dissipation assembly are separately arranged, so that when the cover plate assembly is installed on the lower tray, the installation is more troublesome, and when thermal runaway occurs, the high-temperature gas cannot be discharged upward, which easily leads to deformation and explosion in the cover body. However, the present application directly installs the liquid cooling plate in the cover plate, and simultaneously opens a cooling liquid flow channel and an exhaust flow channel in the liquid cooling plate, which is convenient for installation. The installation of the liquid cooling assembly and the exhaust device can be completed by installing the cover plate. The cooling liquid flow channel is convenient for cooling when working at high temperature, and the exhaust flow channel is convenient for exhausting when thermal runaway occurs.

[0025] The serpentine coolant flow channel can not only improve the heat dissipation effect, but also facilitate the arrangement of the exhaust flow channel in the remaining position in the middle. The exhaust flow channel is correspondingly arranged in an I-shape or a W-shape to improve the exhaust effect at each position; the coolant flow channel on the liquid cooling plate is opened on its upper side surface, and the end portion gradually tilts downward and is connected to the corresponding coolant inlet or coolant outlet, so that the coolant flow channel can be conveniently milled out on the liquid cooling plate, and then connected to the coolant inlet or coolant outlet, and the circulation of the coolant flow channel is realized in cooperation with the cover plate body. Correspondingly, the exhaust flow channel on the liquid cooling plate is opened on its upper side surface, so that it is convenient to mill out an additional exhaust flow channel on the liquid cooling plate, and the circulation of the exhaust flow channel is realized in cooperation with the cover plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the overall connection structure of a power battery cover assembly that is easy to connect in the utility model;

[0028] Figure 2 The utility model is a schematic diagram of the internal structure of a power battery cover assembly that is easy to connect.

[0029] In the figure, 1, cover body; 11, main drain port; 12, mounting edge; 2, liquid cooling plate; 21, coolant flow channel; 22, coolant inlet; 23, coolant outlet; 24, exhaust port; 25, exhaust flow channel. DETAILED DESCRIPTION

[0030] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, and this embodiment does not constitute a limitation of the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] A power battery cover assembly that is easy to connect, such as Figure 1 and Figure 2 As shown, the cover plate body 1 includes a liquid cooling plate 2 abutting against the lower side thereof, a cooling liquid flow channel 21 is provided in the liquid cooling plate 2, and the liquid cooling plate 2 is connected with a cooling liquid inlet 22 and a cooling liquid outlet 23, and the cooling liquid inlet 22 and the cooling liquid outlet 23 are respectively connected with two ends of the cooling liquid flow channel 21;

[0032] A plurality of exhaust ports 24 are also provided on the lower side of the liquid cooling plate 2, and a plurality of exhaust channels 25 are provided on the upper side of the liquid cooling plate 2. The exhaust ports 24 are distributed on the corresponding exhaust channels 25. The cover plate is connected with a main exhaust port 11, which is downwardly connected to the corresponding exhaust channels 25.

[0033] A liquid cooling plate 2 is installed in the cover plate, and a cooling liquid flow channel 21 and an exhaust flow channel 25 are simultaneously provided in the liquid cooling plate 2 for easy installation. The installation of the liquid cooling assembly and the exhaust device can be completed by installing the cover plate. The cooling liquid flow channel 21 is convenient for cooling during high-temperature operation, and the exhaust flow channel 25 is convenient for exhaust during thermal runaway.

[0034] like Figure 2 As shown, one side of the coolant flow channel 21 is serpentine, and the other side is serpentine symmetrically arranged therewith. One end of the two serpentine flow channels is connected to each other, and the other end is connected to the corresponding coolant inlet 22 or coolant outlet 23;

[0035] Among them, the coolant flow channel 21 on the liquid cooling plate 2 is opened on its upper side, and the end is gradually inclined downward, connected to the corresponding coolant inlet 22 or coolant outlet 23; it is convenient to mill the coolant flow channel 21 on the liquid cooling plate 2, and then connect to the coolant inlet 22 or coolant outlet 23, cooperate with the cover plate body 1 to realize the circulation of the coolant flow channel 21, and realize the upper closure of the coolant inlet 22 and the coolant outlet 23, so as to improve the sealing of the coolant pipe after connection;

[0036] The serpentine coolant flow channel 21 can not only improve the heat dissipation effect, but also facilitate the arrangement of the exhaust flow channel 25 in the remaining position in the middle. The exhaust flow channel 25 is correspondingly arranged in an I-shape or a W-shape to improve the exhaust effect at each position.

[0037] like Figure 2As shown, the main exhaust port 11 is located in the middle of a plurality of exhaust ports 24; in this embodiment, the exhaust flow channel 25 is arranged in an I-shape or a W-shape, bypassing the serpentine coolant flow channel 21, and each end of the I-shape or the W-shape is downwardly connected to the exhaust port 24, and the middle part is upwardly connected to the main exhaust port 11, and a single I-shape or W-shape exhaust flow channel 25 can correspond to a battery chamber, avoiding problems such as cross-flow during overheating, which aggravates the tensile state; the exhaust flow channel 25 on the liquid cooling plate 2 is opened on its upper side, which is convenient for milling the exhaust flow channel 25 on the liquid cooling plate 2, and cooperating with the cover plate body 1 to realize the circulation of the exhaust flow channel 25.

[0038] like Figure 1 As shown, for the convenience of installation, the liquid cooling plate 2 is detachably connected to the lower side of the cover body 1 by screws, and a circle of sealing layer can be used to improve the sealing, or a coolant pipe can be connected therein to avoid leakage. The cover body 1 is connected to downward mounting edges 12 on opposite sides, and the mounting edges 12 are detachably connected to the lower tray by screws.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A power battery cover assembly that is easy to connect, Features: The cover plate body (1) comprises a liquid cooling plate (2) abutting against a lower side thereof, a cooling liquid flow channel (21) being provided in the liquid cooling plate (2), the liquid cooling plate (2) being connected to a cooling liquid inlet (22) and a cooling liquid outlet (23), the cooling liquid inlet (22) and the cooling liquid outlet (23) being respectively connected to two ends of the cooling liquid flow channel (21); The lower side of the liquid cooling plate (2) is also provided with a plurality of exhaust ports (24), and the upper side of the liquid cooling plate (2) is provided with a plurality of exhaust channels (25). The exhaust ports (24) are distributed on the corresponding exhaust channels (25). The cover plate is connected with a main exhaust port (11), and the main exhaust port (11) is downwardly connected to the corresponding exhaust channels (25).

2. A power battery cover assembly that is easy to connect according to claim 1, Features: One side of the coolant flow channel (21) is serpentine-shaped, and the other side is serpentine-shaped and symmetrically arranged therewith. One end of the two serpentine flow channels are interconnected, and the other end is connected to a corresponding coolant inlet (22) or coolant outlet (23).

3. A power battery cover assembly that is easy to connect according to claim 2, Features: The main exhaust port (11) is located in the middle of the plurality of exhaust ports (24).

4. A power battery cover assembly that is easy to connect according to claim 3, Features: The exhaust flow channel (25) is arranged in an I-shape or a W-shape, bypassing the serpentine coolant flow channel (21), with each end of the I-shape or the W-shape connected downwardly to the exhaust port (24), and the middle portion connected upwardly to the main exhaust port (11).

5. A power battery cover assembly that is easy to connect according to claim 4, Features: The cooling liquid flow channel (21) on the liquid cooling plate (2) is opened on its upper side surface, with the end gradually tilted downward and connected to the corresponding cooling liquid inlet (22) or cooling liquid outlet (23).

6. A power battery cover assembly that is easy to connect according to claim 4, Features: The exhaust flow channel (25) on the liquid cooling plate (2) is opened on the upper side thereof.

7. A power battery cover assembly that is easy to connect according to claim 5, Features: The liquid cooling plate (2) is detachably connected to the lower side of the cover plate body (1) via screws.

8. The power battery cover assembly that is easy to connect according to claim 1, Features: The cover body (1) is connected to two opposite sides with downward mounting edges (12), and the mounting edges (12) are detachably connected to the lower tray.

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