CN220456501U - Liquid cooling plate, battery pack and energy storage device - Google Patents

Abstract

The utility model relates to a liquid cooling plate, and relates to the technical field of batteries. The liquid cooling plate comprises an upper plate, a lower plate, a runner layer and a turbulent layer, wherein the lower plate and the upper plate are oppositely arranged, the runner layer is arranged between the upper plate and the lower plate, and a runner for cooling liquid to flow is formed between the upper plate and the lower plate. The turbulent flow layer is arranged in the flow channel and comprises a plurality of turbulent flow modules, the turbulent flow modules are corrugated plates, and a plurality of grooves for cooling liquid to flow are formed in the turbulent flow modules. The turbulent flow layer arranged in the flow channel can not only increase the turbulent flow of the cooling liquid and enlarge the heat exchange area, so that a better heat exchange effect is realized, the turbulent flow module in the form of the corrugated plate can also provide certain structural strength, the liquid cooling plate has higher structural strength, the weight of the battery pack can be independently borne, the support beam is not required to be additionally arranged, and the capacity and the installation convenience of the energy storage device are improved while the heat dissipation requirement of the battery pack is met.

Description

Liquid cooling plate, battery pack and energy storage device

Technical field

The utility model relates to the field of battery technology, and in particular to a liquid cooling plate, a battery pack and an energy storage device.

Background technique

In recent years, the fields of new energy vehicles, electrochemical energy storage, and charging and swapping have continued to develop. As a core component, battery packs need to work within a certain temperature range. Liquid cooling plates are usually used to cool the battery packs. In energy storage devices, battery packs are arranged in a stacked manner. For example, the Chinese patent with publication number CN218919214U discloses an energy storage unit cabinet and energy storage system. There is a liquid cooling plate under each stacked battery pack. Due to the heavy weight of the battery pack, in order to prevent the liquid cooling plate from deforming, additional support beams are usually required to support the bottom of the liquid cooling plate. However, setting up support beams will take up space, which is not conducive to increasing the capacity of the energy storage device. On the other hand, the support beams also need to be installed, which is time-consuming and labor-intensive.

Utility model content

The utility model provides a liquid-cooled plate, a battery pack and an energy storage device. The liquid-cooled plate has high structural strength and good cooling performance, and can independently bear the weight of the battery pack without the need for additional support beams, thereby meeting the heat dissipation needs of the battery pack. At the same time, the capacity of the energy storage device and the convenience of installation are improved.

On the one hand, the utility model provides a liquid cooling plate, including:

upper board;

The lower board is arranged opposite to the upper board;

A flow channel layer is disposed between the upper plate and the lower plate, and forms a flow channel for cooling liquid to flow between the upper plate and the lower plate; and

A spoiler layer is provided in the flow channel. The spoiler layer includes a plurality of spoiler modules. The spoiler modules are corrugated plates. The spoiler modules are provided with a plurality of grooves for the flow of coolant.

In one embodiment, the cross-sectional shape of the groove is rectangular, trapezoidal, triangular or wavy.

In one embodiment, the edges of the spoiler module are quadrangular, triangular or fan-shaped.

In one embodiment, two adjacent baffle modules in the direction of coolant flow are spaced apart and form a confluence area.

In one embodiment, the groove is a straight groove or a curved groove.

In one embodiment, the flow channel layer includes an outer frame and a plurality of retaining bars arranged in the outer frame. The retaining bars are fixed on the upper layer plate or the lower layer board. The retaining bars are on The inside of the outer frame defines the flow channel.

On the other hand, a battery pack is provided, including a battery module, an upper cover, and the liquid cooling plate described in any of the above embodiments. The battery module is disposed on the upper plate of the liquid cooling plate. The cover is connected to the upper plate and forms a receiving cavity for accommodating the battery module.

In one embodiment, the upper plate includes a plate body, a water inlet joint and a water outlet joint provided on the plate body, and the water inlet joint and the water outlet joint are both connected to the flow channel.

In one embodiment, the upper layer board further includes at least a pair of oppositely arranged positioning parts, the positioning parts are provided on the upper layer board, and the battery module is connected to the positioning parts.

In addition, an energy storage device is also provided, including a box and a plurality of battery packs according to any of the above embodiments, and the battery packs are arranged inside the box.

Compared with the existing technology, the advantage of this utility model is that the spoiler layer provided in the flow channel can not only increase the turbulence of the coolant, expand the heat exchange area, and achieve better heat exchange effects, but also the corrugated plate shape The spoiler module can also provide a certain structural strength, so that the liquid cooling plate has higher structural strength and can independently bear the weight of the battery pack without the need for additional support beams. It can meet the heat dissipation needs of the battery pack while improving the efficiency of the energy storage device. Capacity and ease of installation.

Description of drawings

The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

Figure 1 is an exploded view of a liquid cooling plate in an embodiment of the present utility model;

Figure 2 is an enlarged view of point A in Figure 1;

Figure 3 is a front view of the spoiler module in the embodiment of the present utility model;

Figure 4 is a top view of the flow channel layer and the flow spoiler layer in the embodiment of the present utility model;

Figure 5 is a top view of the flow channel layer in the embodiment of the present utility model;

Figure 6 is an exploded view of the battery pack in the embodiment of the present invention;

Figure 7 is a top view of the upper plate in the embodiment of the present invention.

Reference signs:

1. Liquid cooling plate; 11. Upper plate; 111. Plate body; 112. Water inlet joint; 113. Water outlet joint; 114. Positioning piece; 12. Lower plate; 13. Flow channel layer; 131. Outer frame; 132. Barrier; 14. Spoiler layer; 141. Spoiler module; 2. Battery module; 3. Upper cover; 100. Groove; 200. Convergence area.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, a liquid cooling plate 1 according to an embodiment of the present invention includes an upper plate 11, a lower plate 12, a flow channel layer 13 and a spoiler layer 14. The lower plate 12 is arranged opposite to the upper plate 11, and the flow channel layer 13 It is disposed between the upper plate 11 and the lower plate 12 to form a flow channel for the cooling liquid to flow between the upper plate 11 and the lower plate 12 . The spoiler layer 14 is arranged in the flow channel. As shown in Figure 2, the spoiler layer 14 includes a plurality of spoiler modules 141. The spoiler modules 141 are corrugated plates. The spoiler modules 141 are provided with a plurality of recesses for the flow of coolant. slot 100.

The liquid cooling plate 1 of this embodiment includes a spoiler layer 14 arranged in the flow channel. The spoiler layer 14 can not only increase the turbulence of the coolant, expand the heat exchange area, and achieve better heat exchange effects. The corrugated plate shape The spoiler module 141 can also provide a certain structural strength, so that the liquid cooling plate 1 has higher structural strength and can independently bear the weight of the battery pack.

As shown in Figure 3, the cross-sectional shape of the groove 100 is rectangular, and multiple grooves 100 are alternately arranged on the upper and lower surfaces of the spoiler module 141, so that the top and bottom surfaces of the spoiler module 141 can be connected with the upper plate 11 and the lower plate respectively. 12 achieves good contact, provides good support when the liquid cooling plate 1 is under pressure, and can also directly exchange heat with the upper plate 11, thereby providing a better cooling effect.

In other embodiments, the cross-sectional shape of the groove 100 is trapezoidal, triangular or wavy, and the shape of the spoiler module 141 also changes accordingly.

As shown in FIG. 4 , the edges of the spoiler module 141 are in a quadrilateral or triangular shape. In order to achieve better heat transfer effect, the flow channel is usually designed in a curved state, as shown in Figure 5. The arrow in Figure 5 indicates the flow direction of the coolant in the flow channel. In order for the spoiler layer 14 to play a better role, the spoiler module 141 should basically cover the entire flow channel. Therefore, the shape of the spoiler module 141 should be selected according to its position in the flow channel, so that the edges of the spoiler module 141 are in various shapes such as triangle, right-angled trapezoid, isosceles trapezoid, parallelogram, etc.

When the shape of the flow channel changes, the shape of the spoiler module 141 may also change accordingly. In other embodiments, the edge of the spoiler module 141 is fan-shaped to cope with the situation where the flow channel has an arc-shaped portion. Correspondingly, the shape of the groove 100 also changes from a straight groove to a curved groove.

As shown in FIG. 4 , two adjacent spoiler modules 141 in the direction of coolant flow are spaced apart to form a confluence area 200 . The coolant flowing out from one spoiler module 141 will first enter the confluence area 200, and then flow from the confluence area 200 into the next spoiler module 141, so that all grooves 100 in the next spoiler module 141 can receive it. to the coolant, so that the coolant can enter the next spoiler module 141 more evenly, so that the cooling effect of all parts of the liquid cooling plate 1 becomes consistent.

As shown in Figure 5, the flow channel layer 13 includes an outer frame 131 and a plurality of retaining bars 132 arranged in the outer frame 131. The retaining bars 132 are fixed on the upper layer plate 11 or the lower layer plate 12, and the retaining bars 132 are inside the outer frame 131. To define the flow channel, the retaining bar 132 can optionally be welded and fixed. By selecting different numbers and shapes of retaining bars 132, flow channels of different shapes can be produced in the same outer frame 131, with low operating difficulty and manufacturing cost and high flexibility.

As shown in Figure 6, an embodiment of the present invention also provides a battery pack, including a battery module 2, an upper cover 3 and the liquid cooling plate 1 of any of the above embodiments. The battery module 2 is arranged on the liquid cooling plate 1 On the upper plate 11, the upper cover 3 is connected with the upper plate 11 and forms a receiving cavity for accommodating the battery module 2, so that this kind of battery pack has the advantages of good heat dissipation performance and high structural strength.

Further, the upper plate 11 includes a plate body 111, a water inlet joint 112 and a water outlet joint 113 provided on the plate body 111. The water inlet joint 112 and the water outlet joint 113 are both connected to the flow channel. The water inlet joint 112 and the water outlet joint 113 connect the flow channel with the external cooling system, so that the heat generated by the operation of the battery module 2 is transferred to the outside world to achieve a cooling effect.

The upper plate 11 also includes a pair of opposite positioning parts 114 . The positioning parts 114 are provided on the upper plate 11 . The battery module 2 is connected to the positioning parts 114 to fix the battery module 2 . In other embodiments, a pair of positioning members 114 are also provided on both sides of the battery module 2, so that the battery module 2 can be fixed more firmly.

An embodiment of the present invention also provides an energy storage device, which includes a box (not shown in the figure) and a plurality of battery packs according to any of the above embodiments, and the battery packs are arranged inside the box. Due to the high strength and good cooling effect of the liquid cooling plate 1 itself, there is no need to set up additional support beams to support the battery pack, which saves space and improves the capacity of the energy storage device and the convenience of installation while meeting the heat dissipation requirements of the battery pack.

Although the invention has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for parts thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (10)

1. A liquid cooling plate, characterized in that it includes: upper board; The lower plate is arranged opposite to the upper plate; A flow channel layer is disposed between the upper plate and the lower plate, and forms a flow channel for cooling liquid to flow between the upper plate and the lower plate; and A spoiler layer is provided in the flow channel. The spoiler layer includes a plurality of spoiler modules. The spoiler modules are corrugated plates. The spoiler modules are provided with a plurality of grooves for the flow of coolant. 2. The liquid cooling plate according to claim 1, wherein the cross-sectional shape of the groove is rectangular, trapezoidal, triangular or wavy. 3. The liquid cooling plate according to claim 2, wherein the edges of the spoiler module are in a quadrangular, triangular or fan shape. 4. The liquid cooling plate according to claim 1, wherein two adjacent spoiler modules in the cooling liquid flow direction are spaced apart to form a confluence area. 5. The liquid cooling plate according to claim 1, wherein the groove is a straight groove or a curved groove. 6. The liquid cooling plate according to any one of claims 1 to 5, characterized in that the flow channel layer includes an outer frame and a plurality of retaining bars arranged in the outer frame, and the retaining bars are fixed on On the upper layer board or the lower layer board, the blocking bar defines the flow channel inside the outer frame. 7. A battery pack, characterized by comprising a battery module, an upper cover and a liquid cooling plate according to any one of claims 1 to 6, the battery module being arranged on the upper plate of the liquid cooling plate The upper cover is connected to the upper plate and forms a receiving cavity for accommodating the battery module. 8. The battery pack according to claim 7, wherein the upper plate includes a plate body, a water inlet joint and a water outlet joint arranged on the plate body, and the water inlet joint and the water outlet joint are both Connected to the flow channel. 9. The battery pack according to claim 8, wherein the upper plate further includes at least a pair of opposite positioning parts, the positioning parts are arranged on the upper plate, and the battery module and the The positioning parts are connected. 10. An energy storage device, characterized in that it includes a box and a plurality of battery packs according to claim 7, and the battery packs are arranged inside the box.