Water cooling plate assembly

Abstract

The utility model discloses a water-cooling plate assembly which comprises a water-cooling plate body, the water-cooling plate body is a long-strip-shaped plate body, two water passing openings are formed in the water-cooling plate body, the two water passing openings are a water inlet and a water outlet respectively, and the water-cooling plate body comprises at least two main water channels, at least two water inlet flow channels and at least two water outlet flow channels. The main water channels are sequentially arranged in the length direction of the water cooling plate body, one end of each water inlet flow channel communicates with the water inlet, the other end of each water inlet flow channel extends to the corresponding main water channel and communicates with the corresponding main water channel, one end of each water outlet flow channel communicates with the water outlet, and the other end of each water outlet flow channel extends to the corresponding main water channel and communicates with the corresponding main water channel. According to the water-cooling plate assembly, the temperature of the cooling liquid in each main water channel almost has no difference, so that when the water-cooling plate assembly cools the battery module, the heat exchange of the battery module in the length direction is uniform, the temperature difference in the battery module can be better controlled, a better heat exchange cooling effect is achieved, and the service life of the battery is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a water-cooled plate assembly. Background Technology

[0002] The battery pack includes battery modules and a water-cooling plate. The water-cooling plate has a circulating water channel and is mounted on the battery modules, fitting snugly against them to exchange heat and cool the modules. Some battery modules are quite long; existing water-cooling plates designed for these longer modules have circulating water channels as follows: Figure 1 As shown, an inlet and an outlet are provided on one side of the water-cooled plate 100. The circulating water path extends from the inlet to the end of the water-cooled plate furthest from the inlet, and then extends in a straight line back to the outlet. This arrangement of the circulating water path results in a problem where the water temperature is lower in the path near the inlet and higher in the path far from the inlet. This leads to uneven heat exchange along the length of the battery module, resulting in a large temperature difference within the battery module and reducing battery life. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a water-cooled plate assembly.

[0004] The present invention adopts the following technical solution:

[0005] A water-cooled plate assembly includes a water-cooled plate body, which is a long strip plate. The water-cooled plate body has two water inlets and outlets, which are water inlets and outlets, respectively. The water-cooled plate body includes at least two main water channels, at least two inlet channels, and at least two outlet channels. Each of the main water channels is arranged sequentially along the length of the water-cooled plate body. One end of each inlet channel is connected to the water inlet, and the other end of each inlet channel extends to and is connected to the corresponding main water channel. One end of each outlet channel is connected to the water outlet, and the other end of each outlet channel extends to and is connected to the corresponding main water channel.

[0006] Optionally, the water inlet and water outlet are located at one end of the water-cooled plate body along the length direction, and the water inlet and water outlet are arranged sequentially along the width direction of the water-cooled plate body.

[0007] Both the inlet and outlet water channels extend along the length of the water-cooled plate body.

[0008] Optionally, each inlet channel and each outlet channel are located on both sides of the water-cooled plate body along the width direction.

[0009] Optionally, in two adjacent water inlet channels, the water inlet channel closer to the main body of the water-cooled plate is connected to the main water channel away from the water inlet, and the water inlet channel away from the main body of the water-cooled plate is connected to the main water channel closer to the water inlet.

[0010] Optionally, the main waterway includes at least two sets of turbulence channels. Each set of turbulence channels includes multiple inlet branch channels and multiple outlet branch channels. Each inlet branch channel and each outlet branch channel is arranged sequentially along the width direction of the water-cooled plate body and extends along the length direction of the water-cooled plate body. Each inlet branch channel and each outlet branch channel are connected. The inlet channel is connected to the inlet branch channel, and the outlet channel is connected to each outlet branch channel.

[0011] Optionally, the water-cooled plate body includes a flow channel plate and a flat plate. The flow channel plate has a groove, and the flat plate and the flow channel plate are connected. The main water channel, the inlet flow channel, and the outlet flow channel are formed between the flat plate and the groove of the flow channel plate.

[0012] Optionally, the flow channel plate is a 5-series aluminum alloy plate;

[0013] The flat plate is a 6-series aluminum alloy plate;

[0014] The flow channel plate and the flat plate are welded and fixed by laser overlay welding process.

[0015] Optionally, it includes an external extension pipe and a water nozzle, the external extension pipe being connected to the water-cooled plate body and communicating with the water inlet, the external extension pipe extending out of the water-cooled plate body, and the water nozzle being connected to the external extension pipe.

[0016] Optionally, the outer extension tube has a tube body and fins disposed on both sides of the tube body;

[0017] The wing is fixedly connected to the water-cooled plate body;

[0018] The faucet is connected to the pipe body.

[0019] Optionally, the flow channel plate has a convex shell portion and a flat shell portion connecting the convex shell portion, and the groove is formed on the back side of the convex shell portion;

[0020] The water inlet is located on the convex shell portion;

[0021] A support platform is provided on the tube body of the extension tube, one end of the extension tube is supported on the convex shell portion, and the support platform is supported on the flat shell portion.

[0022] By adopting the above technical solution, this application has the following beneficial effects:

[0023] The water-cooled plate assembly of this application has an inlet channel that connects to different main water channels, so that the coolant in each main water channel along the length of the water-cooled plate body is the low-temperature coolant that just entered from the inlet. As a result, the temperature of the coolant in each main water channel along the length of the water-cooled plate body is almost the same, thus ensuring that when the water-cooled plate assembly cools the battery module, the heat exchange of the battery module is uniform along the length, which is beneficial to better control the temperature difference in the battery module, achieve better heat exchange cooling effect, and extend battery life.

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0026] Figure 1 A schematic diagram of the existing water-cooled plate structure is shown;

[0027] Figure 2 A schematic diagram of the structure of the water-cooled plate assembly provided in an embodiment of this application is shown;

[0028] Figure 3 This illustration shows a partial enlarged structural diagram of the water-cooled plate assembly provided in an embodiment of this application;

[0029] Figure 4 An exploded structural diagram of the water-cooled plate assembly provided in an embodiment of this application is shown;

[0030] Figure 5 This diagram shows a partial enlarged structural schematic of an exploded view of a water-cooled plate assembly provided in an embodiment of this application;

[0031] Figure 6 This paper shows a schematic diagram of the flow channel plate of the water-cooled plate assembly provided in an embodiment of the present application, which is attached to one side of the flat plate.

[0032] In the figure: Water-cooled plate body 1, main water channel 11, water inlet branch water channel 111, water outlet branch water channel 112, flow channel plate 101, convex shell part 1011, flat shell part 1012, flat plate 102, water inlet flow channel 12, water outlet flow channel 13, fixing block 14, water inlet 21, water outlet 22, external extension pipe 3, pipe body 31, fin 32, support platform 33, water nozzle 4, sealing ring 5, water outlet bushing 6, water-cooled plate 100.

[0033] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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 component 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.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] See Figures 2 to 6As shown in the figure, this application embodiment provides a water-cooled plate assembly, including a water-cooled plate body 1. The water-cooled plate body 1 is a long strip plate with two water inlets, namely an inlet 21 and an outlet 22. The water-cooled plate body 1 includes at least two main water channels 11, at least two inlet channels 12, and at least two outlet channels 13. Each main water channel 11 is arranged sequentially along the length direction of the water-cooled plate body 1. One end of each inlet channel 12 is connected to the inlet 21, and the other end of each inlet channel 12 extends to and connects to the corresponding main water channel 11. One end of each outlet channel 13 is connected to the outlet 22, and the other end of each outlet channel 13 extends to and connects to the corresponding main water channel 11. The main water channels 11 include channels with multiple bends and are the main heat dissipation areas. The inlet channel 12 can be directly connected to the inlet 21, and is connected to the inlet 21 through a main inlet channel. The outlet channel 13 can be directly connected to the outlet 22, and is connected to the outlet 22 through a main outlet channel. In this application's water-cooled plate assembly, the inlet channel 12 connected to the inlet 21 is connected to different main water channels 11, so that the coolant in each main water channel 11 along the length of the water-cooled plate body 1 is the low-temperature coolant that just entered from the inlet 21. As a result, the temperature of the coolant in each main water channel 11 along the length of the water-cooled plate body 1 is almost the same, thereby ensuring that when the water-cooled plate assembly cools the battery module, the heat exchange of the battery module is uniform along the length, which is beneficial for better control of the temperature difference in the battery module, achieving a better heat exchange cooling effect and extending battery life.

[0038] In some possible implementations, the inlet 21 and outlet 22 are located at one end of the water-cooled plate body 1 along its length, and are arranged sequentially along the width of the water-cooled plate body 1, facilitating the layout and installation of external water inlet and outlet pipes. The inlet channel 12 and outlet channel 13 both extend along the length of the water-cooled plate body 1. This allows the inlet channel 12 and outlet channel 13 to connect to each main water channel 11 with the shortest possible distance, resulting in a neater water path arrangement and minimizing the temperature difference between the main water channels 11.

[0039] In some possible implementations, each inlet channel 12 and each outlet channel 13 are respectively located on both sides of the water-cooled plate body 1 along the width direction. The coolant temperature in the outlet channel 13 is higher, and increasing the distance between the inlet channel 12 and the outlet channel 13 can reduce the impact on the coolant in the inlet channel 12.

[0040] In some possible implementations, in two adjacent water inlet channels 12, the water inlet channel 12 closer to the long side of the water-cooled plate body 1 is connected to the main water channel 11 away from the water inlet 21, and the water inlet channel 12 away from the long side of the water-cooled plate body 1 is connected to the main water channel 11 closer to the water inlet 21. This arrangement prevents the water inlet channels 12 from intersecting.

[0041] Furthermore, in two adjacent water outlet channels 13, the water outlet channel 13 closer to the long side of the water-cooled plate body 1 is connected to the main water channel 11 away from the water outlet 22, and the water outlet channel 13 away from the long side of the water-cooled plate body 1 is connected to the main water channel 11 closer to the water outlet 22. This arrangement prevents the water outlet channels 13 from intersecting.

[0042] In some possible implementations, the main waterway 11 includes at least two sets of turbulence channels. Each set of turbulence channels includes multiple inlet branch channels 111 and multiple outlet branch channels 112. The inlet branch channels 111 and outlet branch channels 112 are sequentially arranged along the width direction of the water-cooled plate body 1 and extend along the length direction of the water-cooled plate body 1. The inlet branch channels 111 and outlet branch channels 112 are connected. The inlet channel 12 connects to the inlet branch channels 111, and the outlet channel 13 connects to the outlet branch channels. The inlet branch channels 111 are connected in parallel, and the outlet branch channels 112 are connected in parallel. Within the same set, one side of each inlet branch channel 111 and the same side of each outlet branch channel 112 are connected by a main waterway. By setting the inlet branch channel 111 and the outlet branch channel 112 in parallel, it can be ensured that there is almost no temperature difference in the coolant in each branch channel, thereby further reducing the temperature difference in the battery module.

[0043] In some possible implementations, the water-cooled plate body 1 includes a flow channel plate 101 and a flat plate 102. The flow channel plate 101 has a groove, and the flat plate 102 is connected to the flow channel plate 101. The main water channel 11, the inlet water channel 12, and the outlet water channel 13 are formed between the flat plate 102 and the groove of the flow channel plate 101. One side of the flat plate 102 contacts the battery module, resulting in a large contact area between the water-cooled plate body 1 and the battery module, good heat exchange effect, and easy connection between the water-cooled plate body and the battery module, with a stable connection structure.

[0044] In some possible implementations, the flow channel plate 101 is a 5-series aluminum alloy plate, and the flat plate 102 is a 6-series aluminum alloy plate. The flow channel plate 101 and the flat plate 102 are welded and fixed by laser lap welding. The use of 5-series aluminum alloy for the flow channel plate 101 ensures formability, while the use of 6-series aluminum alloy for the flat plate 102 ensures lightness. The overall connection is achieved using laser lap welding to ensure overall sealing. Compared with existing water-cooled plates using 3-series aluminum brazing and profile water-cooled plates, this approach balances overall strength and flexibility in water channel design.

[0045] In some possible implementations, the water-cooled plate assembly includes an external extension pipe 3 and a water nozzle 4. The external extension pipe 3 is connected to the water-cooled plate body 1 and communicates with the water inlet. The external extension pipe 3 extends out of the water-cooled plate body 1, and the water nozzle 4 is connected to the external extension pipe 3. Existing water-cooled plates place the liquid cooling plate water nozzle 4 inside the battery pack and then connect it to the inlet / outlet 22 on the frame via water pipes. This connection method creates four pairs of male and female connectors inside the battery pack, posing a certain risk of leakage. Leakage can lead to internal insulation failure, short circuits, etc., in the battery pack. The water-cooled plate assembly of this application extends the water nozzle 4 to the outside of the battery pack via the external extension pipe 3, directly avoiding the safety and failure risks caused by leakage.

[0046] In some possible implementations, the outer extension tube 3 has a tube body 31 and fins 32 disposed on both sides of the tube body 31. The fins 32 are fixedly connected to the water-cooling plate body 1, and the water nozzle 4 is connected to the tube body 31. The tube body 31 and the fins 32 on both sides are welded or integrally formed. The structure on the fins 32 that connects to the water-cooling plate body 1 increases the connection point, ensures a stable connection, and does not affect the flow channel inside the tube body 31. Preferably, the tube body 31 is connected to the flow channel plate 101, and the plate 102 is attached to the battery module. The tube body 31 being connected to the flow channel plate 101 does not affect the fit between the water-cooling plate and the battery module.

[0047] In some possible implementations, the flow channel plate 101 has a convex shell portion 1011 and a flat shell portion 1012 connecting the convex shell portion 1011, with the groove formed on the back side of the convex shell portion 1011. The water inlet is disposed on the convex shell portion 1011, and a support platform 33 is disposed on the tube body 31 of the extension tube. One end of the extension tube is supported on the convex shell portion 1011, and the support platform 33 is supported on the flat shell portion 1012. The convex shell portion 1011 and the flat shell portion 1012 are integrally formed by stamping from a long strip of plate. The tube body 31 can only be connected to the flow channel by connecting to the convex shell portion 1011, but in this case, the tube body 31 only has a support point at one end, which is unstable. Therefore, the support platform 33 is provided to increase the support points and ensure that the tube body 31 can maintain its positional stability even under stress.

[0048] In some possible implementations, a fixing block 14 is provided on the water-cooled plate body 1 corresponding to the fin 32. The fixing block 14 is welded to the water-cooled plate body 1, and the fin 32 is connected to the fixing block 14 by bolts. One end of the fastener passes through the first fin 32 and is connected to the fixing hole, while the other end of the fastener is confined within the first fin 32. The fixing block 14 provides a position for the fixing hole, ensuring that the fixing hole does not need to be set on the flow channel plate 101, thus not affecting the sealing effect.

[0049] In one possible implementation, the water-cooled plate assembly includes a sealing ring 5 disposed between the flow channel plate 101 and the outer extension tube 3, and the sealing ring 5 seals the gap between the flow channel plate 101 and the outer extension tube 3. The thickness of the sealing ring 5 is greater than the gap between the flow channel plate 101 and the outer extension tube 3, and the sealing ring 5 is interference-fitted into the gap to fully ensure the sealing performance after connection and prevent leakage.

[0050] In one possible implementation, the water-cooled plate assembly includes an outlet bushing 6 connected to the flow channel plate 101 and communicating with the first water inlet. With the flow channel plate 101 and the outer extension pipe 3 connected, the outlet bushing 6 is inserted into the second water inlet, and the sealing ring 5 is fitted over the outside of the outlet bushing 6. The outlet bushing 6 is sealed and welded to the outer edge of the first water inlet of the flow channel plate 101, and the outer edge of the second water inlet of the outer extension pipe 3 is fitted onto the outlet bushing 6. This provides initial positioning during installation, ensuring accurate installation of the outer extension pipe 3 and facilitating installation.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A water-cooled plate assembly, characterized in that, The device includes a water-cooled plate body, which is a long strip plate. The water-cooled plate body is provided with two water inlets and outlets, respectively. The water-cooled plate body includes at least two main water channels, at least two inlet channels, and at least two outlet channels. Each of the main water channels is arranged sequentially along the length of the water-cooled plate body. One end of each inlet channel is connected to the inlet, and the other end of each inlet channel extends to and is connected to the corresponding main water channel. One end of each outlet channel is connected to the outlet, and the other end of each outlet channel extends to and is connected to the corresponding main water channel.

2. The water-cooled plate assembly according to claim 1, characterized in that, The water inlet and water outlet are located at one end of the water-cooled plate body along the length direction, and the water inlet and water outlet are arranged sequentially along the width direction of the water-cooled plate body. Both the inlet and outlet water channels extend along the length of the water-cooled plate body.

3. The water-cooled plate assembly according to claim 2, characterized in that, Each inlet channel and each outlet channel are located on both sides of the water-cooled plate body along the width direction.

4. The water-cooled plate assembly according to claim 3, characterized in that, In two adjacent water inlet channels, the water inlet channel closer to the main body of the water-cooled plate is connected to the main water channel away from the water inlet, and the water inlet channel away from the main body of the water-cooled plate is connected to the main water channel closer to the water inlet.

5. The water-cooled plate assembly according to claim 4, characterized in that, The main waterway includes at least two sets of turbulence channels. Each set of turbulence channels includes multiple inlet branch channels and multiple outlet branch channels. Each inlet branch channel and each outlet branch channel is arranged sequentially along the width direction of the water-cooled plate body and extends along the length direction of the water-cooled plate body. Each inlet branch channel and each outlet branch channel are connected. The inlet channel is connected to the inlet branch channel, and the outlet channel is connected to each outlet branch channel.

6. The water-cooled plate assembly according to claim 1, characterized in that, The water-cooled plate body includes a flow channel plate and a flat plate. The flow channel plate has a groove. The flat plate and the flow channel plate are connected. The main water channel, the inlet flow channel and the outlet flow channel are formed between the flat plate and the groove of the flow channel plate.

7. The water-cooled plate assembly according to claim 6, characterized in that, The flow channel plate is a 5-series aluminum alloy plate; The flat plate is a 6-series aluminum alloy plate; The flow channel plate and the flat plate are welded and fixed by laser overlay welding process.

8. The water-cooled plate assembly according to claim 6, characterized in that, It includes an external extension pipe and a water nozzle. The external extension pipe is connected to the main body of the water-cooled plate and communicates with the water inlet. The external extension pipe extends out of the main body of the water-cooled plate, and the water nozzle is connected to the external extension pipe.

9. The water-cooled plate assembly according to claim 8, characterized in that, The outer extension tube has a tube body and fins disposed on both sides of the tube body; The wing is fixedly connected to the water-cooled plate body; The faucet is connected to the pipe body.

10. The water-cooled plate assembly according to claim 9, characterized in that, The flow channel plate has a convex shell portion and a flat shell portion connecting the convex shell portion, and the groove is formed on the back side of the convex shell portion; The water inlet is located on the convex shell portion; A support platform is provided on the tube body of the extension tube, one end of the extension tube is supported on the convex shell portion, and the support platform is supported on the flat shell portion.

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