Liquid cooling plate assembly, battery box with liquid cooling plate assembly and vehicle with liquid cooling plate assembly

Abstract

The utility model provides a liquid cooling plate assembly, a battery box with the liquid cooling plate assembly and a vehicle, and relates to the technical field of batteries. The liquid cooling plate assembly comprises a liquid cooling plate main body, the liquid cooling plate main body is provided with a liquid cooling cavity, and the liquid cooling cavity is provided with a liquid inlet and a liquid outlet which are communicated with the outside; and the stop piece is arranged in the liquid cooling cavity, and the stop piece is attached to at least part of the side wall of the liquid cooling cavity. According to the technical scheme of the utility model, the backstop piece is additionally arranged on the side wall of the liquid cooling cavity, so that the strength of the liquid cooling plate main body can be improved, the deformation of the liquid cooling plate main body is reduced, and the cracking and liquid leakage risks are reduced, and in the long-term use process, when the backstop piece is subjected to fatigue damage, the side wall of the liquid cooling cavity can continue to play a supporting role, and the service life of the liquid cooling plate main body is prolonged. And thus, the service life of the liquid cooling plate assembly is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a liquid cooling plate assembly and a battery box and vehicle having the same. Background Technology

[0002] The liquid cooling plate of a liquid-cooled battery box is a very important component of the battery box. It is usually integrated with the lower body of the battery box. The liquid cooling plate consists of key components such as the flow channel body, front baffle, rear baffle, and inlet / outlet. The battery modules are fixed on the liquid cooling plate and then assembled to form the battery box or battery system.

[0003] Most battery box liquid cooling plates are made of extruded profiles, with water baffles welded to the front and back to form liquid cooling channels. This method of assembly also has certain problems: 1. The strength of the front and back water baffles of the battery box liquid cooling plate is insufficient, which makes it easy to crack and break the weld, resulting in liquid leakage of the liquid cooling plate; 2. The rear water baffle is under stress and fatigue damage leads to a short life of the liquid cooling plate.

[0004] There is currently no effective solution to the aforementioned technical problems. Utility Model Content

[0005] The main objective of this invention is to provide a liquid cooling plate assembly and a battery box and vehicle having the same, in order to solve the problem of low strength of liquid cooling plates in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, a liquid cooling plate assembly is provided, comprising: a liquid cooling plate body having a liquid cooling cavity, the liquid cooling cavity having an inlet and an outlet communicating with the outside; and a stop member disposed within the liquid cooling cavity, the stop member being fitted against at least a portion of the sidewall of the liquid cooling cavity.

[0007] Furthermore, the sidewall of the liquid cooling cavity is provided with at least one limiting groove, and the stop member is provided with a limiting protrusion, at least part of which extends into the limiting groove.

[0008] Furthermore, the liquid cooling plate body includes a top plate, a bottom plate, and a side plate, wherein the top plate and the bottom plate are arranged opposite each other along the height direction of the side plate, and the top plate, the bottom plate, and the side plate form a liquid cooling cavity. The liquid inlet and the liquid outlet are both opened on the side plate, and the stop member is fitted with at least part of the side plate.

[0009] Furthermore, the side plate includes a first side plate, a second side plate, a third side plate and a fourth side plate arranged sequentially along the circumference. The first side plate and the third side plate are arranged opposite to each other, and the second side plate and the fourth side plate are arranged opposite to each other. The first side plate is provided with a liquid outlet and a liquid inlet, and a stop is provided on the third side plate.

[0010] Furthermore, the side plate includes a first side plate, a second side plate, a third side plate and a fourth side plate arranged sequentially along the circumference. The first side plate and the third side plate are arranged opposite to each other, and the second side plate and the fourth side plate are arranged opposite to each other. The first side plate is provided with a liquid inlet, the third side plate is provided with a liquid outlet, and a stop member is provided on the first side plate, and / or the stop member is provided on the third side plate.

[0011] Furthermore, the side panel includes a first side panel, a second side panel, a third side panel, and a fourth side panel arranged sequentially along the circumference. The first side panel and the third side panel are arranged opposite each other, and the second side panel and the fourth side panel are arranged opposite each other. The second side panel and the fourth side panel are integrally formed with the top panel and the bottom panel.

[0012] Furthermore, the side plate includes a first side plate, a second side plate, a third side plate, and a fourth side plate arranged sequentially along the circumference. The first side plate and the third side plate are arranged opposite each other, and the second side plate and the fourth side plate are arranged opposite each other. The first side plate, the second side plate, the third side plate, and the fourth side plate are connected to the top plate and the bottom plate by welding.

[0013] Furthermore, the side plate includes a first side plate, a second side plate, a third side plate, and a fourth side plate arranged sequentially along the circumference. The first side plate and the third side plate are arranged opposite each other, and the second side plate and the fourth side plate are arranged opposite each other. The stop member is connected to at least one of the first side plate and the third side plate by welding.

[0014] According to another aspect of the present invention, a battery box is provided, the battery box having a liquid cooling plate assembly, the liquid cooling plate assembly being the aforementioned liquid cooling plate assembly.

[0015] According to another aspect of the present invention, a vehicle is also provided, the vehicle having a battery box, the battery box being the aforementioned battery box.

[0016] By applying the technical solution of this utility model, by additionally setting a stop on the side wall of the liquid cooling cavity, the strength of the liquid cooling plate body can be improved, the deformation of the liquid cooling plate body can be reduced, and the risk of cracking and leakage can be reduced. During long-term use, when the stop fails due to fatigue, the side wall of the liquid cooling cavity can continue to provide support, thereby extending the service life of the liquid cooling plate assembly. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a first embodiment of the liquid-cooled plate assembly according to the present invention is shown;

[0019] Figure 2A schematic diagram of a second embodiment of the liquid-cooled plate assembly according to the present invention is shown;

[0020] Figure 3 A schematic diagram of a third embodiment of the liquid cooling plate assembly according to the present invention is shown.

[0021] The above figures include the following reference numerals:

[0022] 1. Liquid cooling plate body; 11. Top plate; 12. Side plate; 121. First side plate; 122. Second side plate; 123. Third side plate; 124. Fourth side plate; 13. Limiting groove;

[0023] 2. Liquid inlet;

[0024] 3. Liquid outlet;

[0025] 4. Stop; 41. Limiting protrusion. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0030] Combination Figures 1 to 3 As shown, according to a specific embodiment of this application, a liquid cooling plate assembly is provided.

[0031] Specifically, such as Figure 3 As shown, the liquid cooling plate assembly includes a liquid cooling plate body 1 and a stop member 4. The liquid cooling plate body 1 has a liquid cooling cavity, which has an inlet 2 and an outlet 3 communicating with the outside. The stop member 4 is disposed in the liquid cooling cavity and is fitted to at least a part of the side wall of the liquid cooling cavity.

[0032] By applying the technical solution of this embodiment, by additionally setting a stop 4 on the side wall of the liquid cooling cavity, the strength of the liquid cooling plate body 1 can be improved, the deformation of the liquid cooling plate body 1 can be reduced, and the risk of cracking and leakage can be reduced. During long-term use, when the stop 4 is fatigued and damaged, the side wall of the liquid cooling cavity can continue to play a supporting role, thereby extending the service life of the liquid cooling plate assembly.

[0033] It should be noted that the liquid cooling cavity is a closed cavity formed by the side walls of the liquid cooling plate body 1. Coolant flows inside the liquid cooling cavity, and the side walls of the liquid cooling cavity are in contact with the battery module for thermal management of the battery module. Because a stop 4 is additionally provided on the side wall of the liquid cooling cavity, the stop 4 can occupy part of the flow channel size within the liquid cooling cavity. This allows the length of the flow channel to change according to the position of the stop 4, thereby reducing heat loss from the liquid cooling plate and improving its heat exchange efficiency. Figure 3 As shown, after setting the stop 4 on one side of the liquid cooling cavity, the distance between the flow channels is reduced, which can reduce the heat loss of the fluid flowing in the flow channels.

[0034] Specifically, such as Figure 3 As shown, the sidewall of the liquid cooling cavity is provided with at least one limiting groove 13, and the stop member 4 is provided with a limiting protrusion 41, at least a portion of which extends into the limiting groove 13. The cooperation of the limiting groove 13 and the limiting protrusion 41 further fixes the position of the stop member 4, ensuring its stability within the liquid cooling cavity and preventing displacement or vibration of the stop member 4 during coolant flow. This ensures the sealing and cooling effect of the flow channel, making the flow channel structure of the liquid cooling plate assembly more stable and reducing noise and vibration during coolant flow.

[0035] In this embodiment, the limiting protrusion 41 is inserted into the limiting groove 13, which enables precise alignment between the stop 4 and the side wall of the liquid cooling cavity, avoiding performance degradation due to assembly errors. The design of the limiting protrusion 41 and the limiting groove 13 allows the stop 4 to be easily installed and removed, facilitating maintenance and upgrades of the liquid cooling plate, and allowing replacement or adjustment of the stop 4 without damaging the overall structure. Simultaneously, the tight fit between the limiting protrusion 41 and the limiting groove 13 enhances the sealing performance of the liquid cooling cavity, reduces the risk of coolant leakage, and further ensures system safety.

[0036] Furthermore, such as Figures 1 to 3 As shown, the liquid cooling plate body 1 includes a top plate 11, a bottom plate, and a side plate 12. The top plate 11 and the bottom plate are arranged opposite each other along the height direction of the side plate 12, forming a liquid cooling cavity. An inlet 2 and an outlet 3 are both located on the side plate 12, and a stop member 4 is fitted against at least a portion of the side plate 12. The combination of the top plate 11, the bottom plate, and the side plate 12 forms a closed liquid cooling cavity. The fitting of the stop member 4 against the side plate 12 effectively prevents coolant leakage and enhances the structural strength of the liquid cooling plate, significantly improving the sealing and strength of the liquid cooling plate assembly.

[0037] It should be noted that the top plate 11 and the bottom plate are arranged opposite each other along the height direction of the side plate 12, and the three together form a liquid cooling cavity. The liquid inlet 2 and the liquid outlet 3 are both located on the side plate 12, which helps to simplify the external connection of the liquid cooling plate, and at the same time ensures that the coolant is evenly distributed throughout the liquid cooling cavity, improving heat dissipation consistency.

[0038] In one embodiment of this application, such as Figure 3As shown, the side plate 12 includes a first side plate 121, a second side plate 122, a third side plate 123, and a fourth side plate 124 arranged sequentially along the circumference. The first side plate 121 and the third side plate 123 are arranged opposite to each other, and the second side plate 122 and the fourth side plate 124 are arranged opposite to each other. The first side plate 121 has a liquid outlet 3 and a liquid inlet 2, and a stop member 4 is arranged on the third side plate 123. Integrating the liquid outlet 3 and the liquid inlet 2 on the first side plate 121 simplifies the layout of external pipelines and reduces the complexity of the system. Arranging the stop member 4 on the third side plate 123, and positioning it opposite to the liquid outlet 3 and the liquid inlet 2, reduces interference with the flow path of the coolant and improves heat dissipation performance because it is not on the same side as the liquid outlet and liquid inlet 3. By setting a stop 4 on the third side plate 123, a symmetrical flow channel structure is formed with the liquid inlet 2 and liquid outlet 3 on the first side plate 121, ensuring uniform distribution and efficient flow of coolant inside the liquid cooling plate. At the same time, the stop 4 enhances the structural strength of the third side plate 123 and prevents deformation caused by coolant pressure, making the thermal management performance of the liquid cooling plate assembly more balanced.

[0039] In one embodiment of this application, the side plate 12 includes a first side plate 121, a second side plate 122, a third side plate 123, and a fourth side plate 124 arranged sequentially along the circumference. The first side plate 121 and the third side plate 123 are arranged opposite to each other, and the second side plate 122 and the fourth side plate 124 are arranged opposite to each other. The first side plate 121 has a liquid inlet 2, and the third side plate 123 has a liquid outlet 3. A stop member 4 is disposed on the first side plate 121, and / or on the third side plate 123. By providing the stop member 4 on the first side plate 121 and the third side plate 123, a bidirectional flow channel structure is formed, which can not only effectively guide the inflow and outflow of coolant, but also enhance the structural strength of the side plate and prevent deformation caused by the pressure of the coolant or the weight of the battery module. Placing the inlet 2 on the first side plate 121 and the outlet 3 on the third side plate 123 opposite to the first side plate 121 ensures a sufficiently long flow path for the coolant, thereby enhancing heat exchange. The diagonal distribution of the inlet and outlet helps balance the pressure inside the liquid cooling plate, reducing liquid turbulence and improving cooling efficiency. The stop 4 can be placed on the first side plate 121 and / or the third side plate 123. This design offers high flexibility, allowing the position of the stop 4 to be adjusted according to the specific installation requirements of the battery module. This not only effectively secures the battery module and prevents displacement during transportation or operation, but also optimizes the coolant flow path layout by selecting stop 4 on different side plates.

[0040] In one embodiment of this application, the side plate 12 includes a first side plate 121, a second side plate 122, a third side plate 123, and a fourth side plate 124 arranged sequentially along the circumference. The first side plate 121 and the third side plate 123 are arranged opposite to each other, and the second side plate 122 and the fourth side plate 124 are arranged opposite to each other. The second side plate 122 and the fourth side plate 124 are integrally formed with the top plate 11 and the bottom plate. By using an integral forming method, the overall structural strength and sealing performance of the liquid cooling plate assembly are enhanced, the manufacturing process is simplified, and the production cost is reduced. At the same time, the integrally formed structure is usually made of the same material, and the consistency of the material can enhance the corrosion resistance of the liquid cooling plate. Especially in environments where the coolant may contain corrosive components, the integrally formed structure can better protect the liquid cooling plate from corrosion.

[0041] In another embodiment of this application, the side plate 12 includes a first side plate 121, a second side plate 122, a third side plate 123, and a fourth side plate 124 arranged sequentially along the circumference. The first side plate 121 and the third side plate 123 are arranged opposite to each other, and the second side plate 122 and the fourth side plate 124 are arranged opposite to each other. The first side plate 121, the second side plate 122, the third side plate 123, and the fourth side plate 124 are connected to the top plate 11 and the bottom plate by welding. By welding, a tight connection between the components of the liquid cooling plate assembly is ensured, enhancing the overall structural strength and sealing performance, and preventing coolant leakage. Compared with other connection methods, welding can create a gapless connection area between the side plates 12 and between the side plates 12 and the top plate 11 or the bottom plate. At the same time, the size and shape of each component can be flexibly adjusted to adapt to different design requirements.

[0042] In an optional embodiment of this application, the side plate 12 includes a first side plate 121, a second side plate 122, a third side plate 123, and a fourth side plate 124 arranged sequentially along the circumference. The first side plate 121 and the third side plate 123 are arranged opposite to each other, and the second side plate 122 and the fourth side plate 124 are arranged opposite to each other. The stop member 4 is welded to at least one of the first side plate 121 and the third side plate 123. By welding the stop member 4 to the first side plate 121 or the third side plate 123, a more stable flow channel structure is formed, ensuring efficient flow and heat exchange of coolant inside the liquid cooling plate. At the same time, the structural strength of the stop member 4 is enhanced, preventing deformation and damage caused by coolant pressure or the weight of the battery module. When the liquid cooling plate is subjected to vibration or impact, the stability of the battery module can be maintained, reducing the risk of module displacement or damage.

[0043] According to another specific embodiment of this application, a battery box is provided, which has a liquid cooling plate assembly, the liquid cooling plate assembly being the same as that in the above embodiments. By integrating the liquid cooling plate assembly from the above embodiments into the battery box, and by enhancing the structural strength of the liquid cooling plate and optimizing the flow channel design, efficient cooling and thermal management of the battery module can be achieved, while simultaneously improving the sealing and durability of the battery box.

[0044] According to another specific embodiment of this application, a vehicle is also provided, the vehicle having a battery box, the battery box being the battery box in the above embodiment.

[0045] It should be noted that the number of the liquid inlet 2, liquid outlet 3, top plate 11, side plate 12, and stop 4 of the liquid cooling plate assembly can be set according to the structural changes of different battery modules. When the liquid cooling plate assembly is in use, the coolant enters the liquid cooling cavity through the liquid inlet 2, undergoes heat exchange through the fins inside the flow channel, carries away the heat generated by the battery module during operation, and then flows out through the liquid outlet 3. During the flow of coolant, since the stop 4 is set on the side plate 12, the stop 4 can provide a double seal for the liquid cooling cavity. Even if the stop 4 is damaged by the pressure of the battery module during use, the side plate 12 can still maintain the integrity and sealing of the flow channel, ensuring the normal operation of the liquid cooling plate assembly. During operation, the force transmission path is the pressure generated by the battery module on the liquid cooling plate assembly. It is first transmitted to the stop 4 through the top plate 11, and then to the side plate 12. Even if the stop 4 is fatigued and damaged during long-term use, the side plate 12 can still play a role and extend the service life of the battery box liquid cooling plate.

[0046] This application also provides a preferred embodiment of a liquid cooling plate assembly, wherein the liquid cooling plate assembly has flow channel fins processed inside, and a stop 4 is welded on, and the side plate 12 and the stop 4 form a flow channel for heat dissipation.

[0047] Specifically, the liquid cooling plate can be divided into a liquid cooling plate body 1, a top plate 11, a first side plate 121, a second side plate 122, a third side plate 123, a fourth side plate 124, a liquid inlet 2, a liquid outlet 3, and a flow guide shroud. The liquid inlet 2 is welded to the first side plate 121, which has flow channel holes. The top plate 11, the first side plate 121, the second side plate 122, the third side plate 123, the fourth side plate 124, and the bottom plate are fixed by welding. Flow guide shrouds are welded at the liquid inlet 2 and the liquid outlet 3.

[0048] Cooling medium enters the liquid cooling plate body 1 through the inlet 2. The liquid cooling plate body 1 has flow channel fins machined inside. The cooling medium flows through the flow channel fins from the inlet 2, and heat exchange occurs, carrying away the heat generated by the battery module during operation. The flow channel fins inside the liquid cooling plate body 1 are machined into shapes of varying lengths. Then, a stop 4 is welded to the side plate 12. The stop 4, the side plate 12, and the liquid cooling plate body 1 form a cooling medium flow channel. The cooling medium can enter from the inlet 2, pass through the liquid cooling cavity inside the liquid cooling plate body 1, and then flow out of the liquid cooling plate from the outlet 3, carrying away the heat.

[0049] A stopper 4 is welded to one of the side plates 12, forming a double-sealed structure with the side plate 12. During use, the weight of the battery module causes severe deformation of the flow channel fins and the main body 1 of the liquid cooling plate. The double-sealed flow channel structure with two stoppers significantly increases the structural strength of the main body 1 of the liquid cooling plate, reduces deformation, and thus reduces the risk of damage. Simultaneously, when the liquid cooling plate is working, the force generated by the battery module is first transmitted to the stopper 4, and then to the side plate 12. This ensures that even if the stopper 4 fails to seal, the side plate 12 can still form a complete flow channel with the main body 1 of the liquid cooling plate, the top plate 11, the bottom plate, and the flow guide, allowing for continued use. The stopper 4, embedded in the main body 1 of the liquid cooling plate, further increases strength and extends the lifespan of the liquid cooling plate.

[0050] As can be seen from the above description, the liquid cooling plate assembly of this embodiment has the following beneficial effects: the stop 4 and the side plate 12 are configured to form a double-sealed flow channel structure. When the liquid cooling plate is deformed under force during use, the stop 4 increases the strength and reduces the deformation of the flow channel, thereby reducing the risk of damage to the liquid cooling plate. At the same time, when the stop 4 suffers welding damage and seal failure, the side plate 12 can still form a complete flow channel body and continue to be used, increasing the life of the liquid cooling plate.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid-cooled plate assembly, characterized in that, include: The liquid cooling plate body (1) has a liquid cooling cavity, and the liquid cooling cavity has an inlet (2) and an outlet (3) that communicate with the outside. A stop (4) is disposed in the liquid cooling cavity and is fitted to at least a portion of the side wall of the liquid cooling cavity.

2. The liquid-cooled plate assembly according to claim 1, characterized in that, The sidewall of the liquid cooling cavity is provided with at least one limiting groove (13), and the stop member (4) is provided with a limiting protrusion (41), at least a portion of the limiting protrusion (41) extending into the limiting groove (13).

3. The liquid-cooled plate assembly according to claim 1 or 2, characterized in that, The liquid cooling plate body (1) includes a top plate (11), a bottom plate, and a side plate (12). The top plate (11) and the bottom plate are arranged opposite each other along the height direction of the side plate (12). The top plate (11), the bottom plate, and the side plate (12) form the liquid cooling cavity. The liquid inlet (2) and the liquid outlet (3) are both opened on the side plate (12). The stop member (4) is fitted with at least a portion of the side plate (12).

4. The liquid-cooled plate assembly according to claim 3, characterized in that, The side plate (12) includes a first side plate (121), a second side plate (122), a third side plate (123) and a fourth side plate (124) arranged sequentially along the circumference. The first side plate (121) is arranged opposite to the third side plate (123), and the second side plate (122) is arranged opposite to the fourth side plate (124). The first side plate (121) is provided with the liquid outlet (3) and the liquid inlet (2), and the stop member (4) is provided on the third side plate (123).

5. The liquid-cooled plate assembly according to claim 3, characterized in that, The side plate (12) includes a first side plate (121), a second side plate (122), a third side plate (123) and a fourth side plate (124) arranged sequentially along the circumference. The first side plate (121) is arranged opposite to the third side plate (123), and the second side plate (122) is arranged opposite to the fourth side plate (124). The first side plate (121) is provided with the liquid inlet (2), and the third side plate (123) is provided with the liquid outlet (3). The stop member (4) is provided on the first side plate (121) and / or the stop member (4) is provided on the third side plate (123).

6. The liquid-cooled plate assembly according to claim 3, characterized in that, The side plate (12) includes a first side plate (121), a second side plate (122), a third side plate (123) and a fourth side plate (124) arranged sequentially along the circumference. The first side plate (121) is arranged opposite to the third side plate (123), and the second side plate (122) is arranged opposite to the fourth side plate (124). The second side plate (122) and the fourth side plate (124) are integrally formed with the top plate (11) and the bottom plate.

7. The liquid-cooled plate assembly according to claim 3, characterized in that, The side plate (12) includes a first side plate (121), a second side plate (122), a third side plate (123), and a fourth side plate (124) arranged sequentially along the circumference. The first side plate (121) is arranged opposite to the third side plate (123), and the second side plate (122) is arranged opposite to the fourth side plate (124). The first side plate (121), the second side plate (122), the third side plate (123), and the fourth side plate (124) are connected to the top plate (11) and the bottom plate by welding.

8. The liquid-cooled plate assembly according to claim 3, characterized in that, The side plate (12) includes a first side plate (121), a second side plate (122), a third side plate (123), and a fourth side plate (124) arranged sequentially along the circumference. The first side plate (121) is arranged opposite to the third side plate (123), and the second side plate (122) is arranged opposite to the fourth side plate (124). The stop member (4) is connected to at least one of the first side plate (121) and the third side plate (123) by welding.

9. A battery box, characterized in that, The battery box has a liquid cooling plate assembly, which is the liquid cooling plate assembly according to any one of claims 1-8.

10. A vehicle having a battery box, characterized in that, The battery box is the battery box as described in claim 9.

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