CN222355225U - Cold plate, battery pack and electric equipment - Google Patents

Abstract

The application provides a cold plate, a battery pack and electric equipment, wherein the cold plate comprises a first unit, at least one second unit and at least one first unit, wherein an end flow channel is arranged in the first unit, a straight flow channel is arranged in the second unit, and the at least one second unit is spliced with the first unit in the extending direction of the straight flow channel so as to enable the straight flow channel to be communicated with the end flow channel, the size of the cold plate in the extending direction of the straight flow channel is increased, and the universality of the cold plate is improved.

Description

Cold plate, battery pack and electric equipment

Technical Field

The utility model belongs to the technical field of refrigeration, and particularly relates to a cold plate, a battery pack and electric equipment.

Background

When the cold plate is used for cooling the batteries of the battery pack, the arrangement mode of the batteries in the battery pack is changed, and the structure of the cold plate is required to be changed.

Each cold plate needs to be independently opened, and the change of the cold plate structure needs to increase the mold to remanufacture the cold plate, so that the manufacturing cost is increased, and the universality of the cold plate is also influenced.

Disclosure of utility model

An object of the utility model is to provide a new technical scheme of a cold plate, a battery pack and electric equipment.

According to a first aspect of the present utility model, there is provided a cold plate for cooling a battery, comprising:

A first unit having an end flow passage therein;

At least one second unit having a straight flow path therein;

At least one of the second units is spliced with the first unit in the extending direction of the straight flow passage so that the straight flow passage communicates with the end flow passage.

Optionally, the cold plate includes a plurality of the second units, and the plurality of the second units are arranged along the extending direction of the direct current channel and are sequentially connected to form a second unit group, wherein, along the extending direction of the direct current channel, the second units of at least one end in the second unit group are connected with the first units.

Optionally, the cold plate includes:

A substrate;

the runner plate comprises an end plate and at least one middle plate, wherein the end plate is connected to the base plate to form the first unit, the middle plate is connected to the base plate to form the second unit, and the middle plate is spliced with the end plate.

Optionally, the end plate includes a first end plate and a second end plate, the first end plate is connected to the base plate and forms a first end flow channel with the base plate, and the second end plate is connected to the base plate and forms a second end flow channel with the base plate;

At least one of the intermediate plates is disposed between the first end plate and the second end plate, and a straight flow passage is formed between the intermediate plate and the base plate, and the straight flow passage is communicated between the first end flow passage and the second end flow passage.

Optionally, the first end plate and the second end plate are oppositely arranged at intervals, and the first end plate and the second end plate are used for being opposite to two ends of the battery;

at least one of the intermediate plates is disposed between the first end plate and the second end plate for opposing the middle portion of the battery.

Optionally, the flow channel plate comprises a first end plate and two second end plates;

the two second end plates are symmetrically arranged on two sides of the first end plate, a first area is formed between one second end plate and the first end plate, and a second area is formed between the other second end plate and the first end plate;

The middle plates comprise a plurality of first middle plates and a plurality of second middle plates, the first middle plates are arranged in the first area side by side, and the second middle plates are arranged in the second area side by side.

Optionally, the first end plate has a first end region and a second end region, the first end region and the first region forming a first heat exchange region, the second end region and the second region forming a second heat exchange region;

The first heat exchange area and the second heat exchange area are used for exchanging heat for the two batteries.

Optionally, two second end plates are used opposite to the two ends of the battery.

Optionally, the cold plate has a length dimension and a width dimension, the length dimension of the cold plate being greater than the width dimension;

The first end plate and the second end plate are arranged at intervals in the length direction of the cold plate, and the plurality of direct current channels are parallel to the length direction of the cold plate;

or the first end plate and the second end plate are arranged at intervals in the width direction of the cold plate, and the plurality of direct current channels are parallel to the width direction of the cold plate.

Optionally, a plurality of first straight flow channels are formed between the middle plate and the base plate, which are close to the first end plate, and the first straight flow channels are distributed at equal intervals;

The first end flow passage is a bent flow passage, and one end of the first end flow passage is communicated with one of the first straight flow passages, and the other end of the first end flow passage is communicated with the other of the first straight flow passages.

Optionally, a plurality of second straight flow channels are formed between the middle plate and the base plate, which are close to the second end plate, and the second straight flow channels are distributed at equal intervals;

The second end flow channel is a bent flow channel, one end of the second end flow channel is communicated with one second direct flow channel, and the other end of the second end flow channel is communicated with the other second direct flow channel.

Optionally, the device further comprises a connecting piece, wherein adjacent intermediate plates are connected through the connecting piece, and/or the first end plate and the intermediate plates are connected through the connecting piece, and/or the second end plate and the intermediate plates are connected through the connecting piece.

Optionally, the overlapping width of the connecting piece and the middle plate is in the range of 5-15mm.

Optionally, the device further comprises a connector, wherein the connector is provided with a first port and a second port, and the first end flow channel is provided with a first liquid inlet and a first liquid outlet;

The connector is connected to the first end plate, the first port is communicated with the first liquid inlet, and the second port is communicated with the first liquid outlet;

or the second end flow passage is provided with a second liquid inlet and a second liquid outlet;

The joint is connected to the second end plate, the first port is communicated with the second liquid inlet, and the second port is communicated with the second liquid outlet.

Optionally, the first end flow channel comprises a first converging flow channel and a first diverging flow channel, an inlet end of the first diverging flow channel is connected to the first converging flow channel, and an outlet end of the first diverging flow channel is connected to the direct flow channel;

The second end flow passage comprises a second converging flow passage and a second diverging flow passage, an inlet end of the second diverging flow passage is connected to the second converging flow passage, and an outlet end of the second diverging flow passage is connected to the direct flow passage.

According to a second aspect of the present utility model, there is provided a battery pack comprising a battery and the cold plate of the first aspect for cooling the battery.

According to a third aspect of the present utility model, there is provided a powered device comprising the battery pack of the second aspect.

The utility model has the technical effects that:

The embodiment of the application provides a cold plate, which comprises a first unit, at least one second unit and at least one first unit, wherein the first unit is provided with an end flow channel, the second unit is provided with a straight flow channel, and the second unit is spliced with the first unit in the extending direction of the straight flow channel so as to enable the straight flow channel to be communicated with the end flow channel, thereby increasing the size of the cold plate in the extending direction of the straight flow channel and improving the universality of the cold plate.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a perspective view of a cold plate according to an embodiment of the present utility model;

FIG. 2 is a top view of a cold plate according to one embodiment of the present utility model;

FIG. 3 is a perspective view of another cold plate according to an embodiment of the present utility model;

FIG. 4 is a top view of another cold plate according to one embodiment of the present utility model;

FIG. 5 is a perspective view of yet another cold plate according to an embodiment of the present utility model;

FIG. 6 is a top view of yet another cold plate provided in accordance with one embodiment of the present utility model;

FIG. 7 is a perspective view of yet another cold plate according to an embodiment of the present utility model;

FIG. 8 is a top view of yet another cold plate according to one embodiment of the present utility model;

FIG. 9 is a perspective view of a cold plate (including connectors) according to one embodiment of the present utility model;

FIG. 10 is a top view of a cold plate (including connectors) according to one embodiment of the present utility model;

FIG. 11 is a schematic diagram illustrating the cooperation between a flow field plate and a connecting member of a cold plate according to an embodiment of the present utility model;

Fig. 12 is an exploded view of a cold plate according to an embodiment of the present utility model.

The device comprises a substrate 1, a runner plate 2, a runner plate 21, a first end plate 211, a first end runner 22, a second end plate 221, a second end runner 23, an intermediate plate 231, a direct current runner 232, a first direct current runner 233, a second direct current runner 3, a connecting piece 4 and a joint.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The features of the application "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The cold plate provided by the embodiment of the application is used for cooling the battery, the cold plates with different structures are arranged through the combination of the plurality of middle plates in the runner plate, the plurality of middle plates can be molded by adopting a unified mold, the plurality of cold plates are prevented from being opened for multiple times, the manufacturing cost of the cold plates is reduced by omitting a process of opening the mold for multiple times, the production period of the cold plates is shortened, and meanwhile, the universality of the cold plates is improved.

Specifically, when the cold plate is used for cooling the battery, through the different settings of runner board in the cold plate, can make a plurality of intermediate plates match the battery of different arrangement modes, guaranteed the cooling efficiency of cold plate.

An embodiment of the present application provides a cold plate for cooling a battery, the cold plate including:

A first unit having an end flow passage therein;

At least one second unit having a straight flow passage 231 therein;

At least one of the second units is spliced with the first unit in the extending direction of the straight flow path 231 so that the straight flow path 231 communicates with the end flow path.

In this embodiment, the battery includes at least one cell, e.g., the battery may be an entire battery cell group, i.e., a plurality of battery cells, or the battery may be a single battery cell.

In this embodiment, the first unit is located at an end of the cold plate to provide the cold plate with a cooling medium through an end flow passage, and the second unit has a straight flow passage 231 therein, and is spliced with the first unit in an extending direction of the straight flow passage 231, increasing a size of the cold plate in the extending direction of the straight flow passage 231.

In one embodiment, the cold plate includes a plurality of second units, the plurality of second units are identical in structure, so that the plurality of second units can be molded by the same mold, for example, the plurality of second units are identical in length and width, and the number, the size and the spacing distance of the straight channels 231 on each second unit are identical, and the size of the plurality of second units is greatly reduced relative to the size of the whole cold plate, so that the size of the mold for manufacturing the second units can be reduced, the molding process of the second units is simplified, and the requirement on molding equipment for forming the straight channels 231 on the second units is lower.

The cold plate provided by the embodiment of the application comprises a first unit, at least one second unit and at least one first unit, wherein the first unit is provided with an end flow channel, the second unit is provided with a straight flow channel 231, and the at least one second unit is spliced with the first unit in the extending direction of the straight flow channel 231 so that the straight flow channel 231 is communicated with the end flow channel to increase the size of the cold plate in the extending direction of the straight flow channel 231, simplify the forming process of the cold plate and improve the universality of the cold plate.

In one embodiment, the cold plate includes a plurality of second units arranged along the extending direction of the straight flow path 231 and sequentially connected to form a second unit group, wherein the second units of at least one end of the second unit group are connected to the first unit along the extending direction of the straight flow path 231. The area and the length of the direct current region of the cold plate can be increased only by increasing the number of the second units based on the structural arrangement, so that batteries or battery packs with different sizes are adapted.

In one embodiment, the cold plate may further comprise a middle harmonica tube and end runner tubes. Wherein, the middle harmonica pipe is communicated with the end flow channel pipe. The middle harmonica tube is a second unit, and the end runner tube is a first unit. Further, the intermediate harmonica pipes may be provided in plurality, and the plurality of intermediate harmonica pipes may be arranged and connected along the extending direction of the direct current path. The end runner pipe can be a collecting pipe, namely, is connected with the water inlet and the water outlet. Furthermore, the end flow channel tubes may be headers for connecting different intermediate harmonica tubes arranged in the second direction. The second direction is perpendicular to the extending direction along the direct current path.

In one embodiment, the cold plate comprises:

A substrate 1;

A flow field plate 2, said flow field plate 2 comprising an end plate and at least one intermediate plate 23, said end plate being connected to said base plate 1 to form said first unit, said intermediate plate 23 being connected to said base plate 1 and being spliced with said end plate to form said second unit.

In this embodiment, the substrate 1 may be a flat plate, and when the cold plate is used for cooling the battery, the substrate 1 may be in contact with the battery, and the adhesion degree between the cold plate and the battery is improved by using the substrate 1 with a flat surface.

The end plates and the plurality of middle plates 23 in the flow passage plate may be metal plates formed through a stamping process to form rugged grooves on the end plates and the plurality of middle plates 23, and when the rugged grooves formed on the end plates and the plurality of middle plates 23 are connected to the same side surface of the base plate 1, end flow passages may be formed between the bent grooves on the end plates and the base plate 1, and a plurality of straight flow passages 231 may be formed between the straight grooves on the plurality of middle plates 23 and the base plate 1, so that the size of the cold plate in the extending direction of the straight flow passages 231 is increased under the condition that the end flow passages are communicated with the straight flow passages 231, and the forming process of the cold plate is simplified.

Furthermore, in another embodiment, the base plate 1 may also be provided with a plurality of separate sub-base plates, each of which is connected to the end plate and the intermediate plate 23, respectively. I.e. the sub-substrate is connected to the end plate to form a separate first unit and the sub-substrate is connected to the intermediate plate 23 to form a separate second unit. Wherein the first unit is connected with the second unit.

In one embodiment, referring to fig. 1 and 12, the end plates include a first end plate 21 and a second end plate 22, the first end plate 21 being connected to the base plate 1 and forming a first end flow channel 211 with the base plate 1, the second end plate 22 being connected to the base plate 1 and forming a second end flow channel 221 with the base plate 1;

At least one intermediate plate 23 is disposed between the first end plate 21 and the second end plate 22, and a straight flow passage 231 is formed between the intermediate plate 23 and the base plate 1, and the straight flow passage 231 is communicated between the first end flow passage 211 and the second end flow passage 221.

In this embodiment, the cold plate may include a plurality of intermediate plates 23, the plurality of intermediate plates 23 being disposed side by side between the first end plate 21 and the second end plate 22, and each intermediate plate 23 and the base plate 1 forming a straight flow passage 231 therebetween, the plurality of straight flow passages 231 communicating between the first end flow passage 211 and the second end flow passage 221.

The first end plate 21, the second end plate 22 and the plurality of intermediate plates 23 of the flow path plates may be metal plates formed by a stamping process to form grooves on the first end plate 21, the second end plate 22 and the plurality of intermediate plates 23, and when the grooves on the first end plate 21, the second end plate 22 and the plurality of intermediate plates 23 are connected to the same side surface of the substrate 1, a first end flow path 211 may be formed between the bent groove on the first end plate 21 and the substrate 1, a second end flow path 221 may be formed between the bent groove on the second end plate 22 and the substrate 1, and a plurality of straight flow paths 231 may be formed between the straight grooves on the plurality of intermediate plates 23 and the substrate 1.

The plurality of straight flow channels 231 are correspondingly communicated between the first end flow channel 211 and the second end flow channel 221, for example, one end of one straight flow channel 231 is correspondingly communicated with one end of the first end flow channel 211, the other end of one straight flow channel 231 is correspondingly communicated with one end of the second end flow channel 221, so that a continuous flow channel is formed on the same side surface of the substrate 1, cooling working medium is introduced into the flow channel, heat of the battery can be absorbed through the cooling working medium, and the temperature of the battery is ensured to be in a safe operation range.

The plurality of straight flow channels 231 are correspondingly communicated between the first end flow channel 211 and the second end flow channel 221, and the straight flow channels 231 can be directly communicated between the first end flow channel 211 and the second end flow channel 221, or the straight flow channels 231 between the two straight flow channels 231 are communicated with the straight flow channels 231 on two sides, and then are respectively communicated with the first end flow channel 211 and the second end flow channel 221 through the straight flow channels 231 on two sides.

In one embodiment, one side surface of the substrate 1 may be matched with the flow channel plates 2 to form a flow channel on one side surface of the substrate 1, and the other side surface of the substrate 1 is a plane to facilitate the bonding of the cold plate and the battery, and in another embodiment, two side surfaces of the substrate 1 may be respectively matched with two flow channel plates 2 to form flow channels on two side surfaces of the substrate 1, so as to improve the cooling efficiency of the cold plate to the battery.

In this embodiment, the plurality of intermediate plates 23 have the same structure, so that the plurality of intermediate plates 23 can be formed by the same mold, for example, the plurality of intermediate plates 23 have the same length and width, and the number, size and spacing distance of the linear grooves on each intermediate plate 23 are the same, and the size of the plurality of intermediate plates 23 is greatly reduced relative to the size of the entire cold plate, so that the size of the mold for manufacturing the intermediate plates 23 can be reduced, the molding process of the intermediate plates 23 is simplified, and the requirement on the stamping equipment for forming the grooves on the intermediate plates 23 is lower.

In this embodiment, the plurality of intermediate plates 23 are arranged side by side between the first end plate 21 and the second end plate 22, so that the length of the straight flow channel 231 can be increased by increasing the number of the intermediate plates 23 to adapt to the design requirements of cold plates with different sizes and dimensions, thereby improving the versatility of the cold plates.

In one embodiment, referring to fig. 1, the first end plate 21 and the second end plate 22 at two ends of the cold plate may be shared areas in different cold plates for splitting and converging the channels in the cold plates, and the area formed by splicing the plurality of intermediate plates 23 is a combined area, and the intermediate plates 23 in the area can be formed by only one stamping die, and according to the battery grouping mode, the number and arrangement mode of the intermediate plates 23 in the combined area can be correspondingly adjusted, that is, a set of dies is used for producing a plurality of intermediate plates 23 to be combined, so that a plurality of cold plates in different forms can be obtained to match with the battery combined structure formed in different modes.

In this embodiment, when the cold plate is formed, the first end plate 21, the second end plate 22 and the plurality of intermediate plates 23 are arranged on the base plate 1 and then primarily fixed, which may be hole positioning or riveting positioning, and then the first end plate 21, the second end plate 22 and the plurality of intermediate plates 23 are welded to the base plate 1, so as to ensure the tightness of the flow channel and the structural stability of the cold plate.

In one embodiment, referring to fig. 1 and 2, a first end plate 21 and a second end plate 22 are disposed at opposite intervals, the first end plate 21 and the second end plate 22 being for opposite ends of the battery;

at least one intermediate plate 23 is provided between the first end plate 21 and the second end plate 22 for opposing the middle of the cell.

In this embodiment, a plurality of intermediate plates 23 are provided between the first end plate 21 and the second end plate 22, so that the size of the cold plate and the flow path layout can be optimized by the adjustment of the number of the intermediate plates 23 and the adjustment of the arrangement of the intermediate plates 23.

When the battery is cooled by the cold plate, the first end plate 21 and the second end plate 22 at two ends of the cold plate are opposite to two ends of the battery, the temperature at two ends of the battery is higher during charging and discharging, a plurality of first bending positions are arranged in the first end flow channel 211 formed between the first end plate 21 and the base plate 1, a plurality of second bending positions are arranged in the second end flow channel 221 formed between the second end plate 22 and the base plate 1, and cooling working media in the first end flow channel 211 and the second end flow channel 221 are buffered through the first bending positions and the second bending positions, so that the cooling efficiency at the first end plate 21 and the second end plate 22 at two ends of the cold plate is improved, and the cooling effect of the cold plate on the battery is ensured.

In one embodiment, referring to fig. 3 and 4, the flow field plate 2 includes one first end plate 21 and two second end plates 22;

Two second end plates 22 are symmetrically arranged at two sides of the first end plate 21, a first area is formed between one second end plate 22 and the first end plate 21, and a second area is formed between the other second end plate 22 and the first end plate 21;

The intermediate plate 23 includes a plurality of intermediate plates of a first type and a plurality of intermediate plates of a second type, the plurality of intermediate plates of the first type being arranged side by side in the first region, the plurality of intermediate plates of the second type being arranged side by side in the second region.

In this embodiment, two second end plates 22 are located at both ends of the cold plate, a first end plate 21 is located at a middle position of the cold plate, and a middle plate 23 is provided between the second end plate 22 and the first end plate 21 to form an arrangement of the second end plate 22, the middle plate 23, the first end plate 21, the middle plate 23, and the second end plate 22.

In one embodiment, the first end plate 21 has a first end region and a second end region, the first end region and the first region forming a first heat exchange region, and the second end region and the second region forming a second heat exchange region;

The first heat exchange area and the second heat exchange area are used for exchanging heat for the two electric cores.

In this embodiment, the cold plate may be used to cool upper and lower rows of cells, corresponding to the cold plate in fig. 4, both ends of the upper row of cells may be opposite to the second end plate 22 and the upper half of the first end plate 21 of the upper end of the cold plate, respectively, and both ends of the lower row of cells may be opposite to the second end plate 22 and the lower half of the first end plate 21 of the lower end of the cold plate, respectively, to secure the effect of the cold plate on cooling the cells through the second end plate 22 and the first end plate 21.

In the embodiment, the upper and lower rows of batteries are transversely arranged, the cooling plate flows into the cooling working medium to the flow channel from the joint in the middle, the cooling working medium flows through the lower end of the upper row of batteries and the upper end area of the lower row of batteries, then flows into the upper end of the upper row of batteries and the lower end area of the lower row of batteries from the middle area of the batteries, and finally flows back to the joint, so that the cooling effect of the end parts of the batteries is ensured.

In another embodiment, two second end plates 22 are used opposite to two ends of the battery, the first end plate 21 is used opposite to the middle of the battery, namely, the cold plate is used for cooling a row of batteries, when the heating value of the middle position of the battery is increased, the batteries can be rapidly cooled through a cooling medium between the first end plate 21 and the base plate 1, and a plurality of middle plates 23 are arranged between the first end plate 21 and the second end plate 22 and are used opposite to the transition area of the battery, wherein the transition area of the battery is the area between the two ends and the middle of the battery.

In one embodiment, the cold plate has a length dimension and a width dimension, the length dimension of the cold plate being greater than the width dimension;

The first end plate 21 and the second end plate 22 are arranged at intervals in the length direction of the cold plate, and the plurality of straight flow channels 231 are parallel to the length direction of the cold plate;

Or the first end plate 21 and the second end plate 22 are disposed at intervals in the width direction of the cold plate, and the plurality of straight flow channels 231 are parallel to the width direction of the cold plate.

In one embodiment, referring to fig. 1, the length direction of the cold plate is the X direction, the width direction of the cold plate is the Y direction, the length dimension of the cold plate in the length direction is greater than the width dimension of the cold plate in the width direction, the first end plate 21 and the second end plate 22 are arranged at intervals in the length direction of the cold plate, the plurality of middle plates 23 are arranged between the first end plate 21 and the second end plate 22 side by side, and the plurality of straight channels 231 are parallel to the length direction of the cold plate, so that the straight channels 231 are communicated with the first end channels 211 and the second end channels 221, and a continuous combined channel is formed in the cold plate, so that the flexibility and the universality of the design of the cold plate are improved on the basis of ensuring the cooling efficiency of the cold plate.

In another embodiment, referring to fig. 3, the length direction of the cold plate is the X direction, the width direction of the cold plate is the Y direction, the length dimension of the cold plate in the length direction is greater than the width dimension of the cold plate in the width direction, the first end plate 21 and the second end plate 22 are arranged at intervals in the width direction of the cold plate, the plurality of middle plates 23 are arranged between the first end plate 21 and the second end plate 22 side by side, and the plurality of first straight flow channels 232 and the plurality of second straight flow channels 233 are parallel to the width direction of the cold plate, and continuous combined flow channels can be formed in the cold plate as well, so that the cooling efficiency of the cold plate is ensured.

In one embodiment, see fig. 3 and 4, three intermediate plates 23 are arranged side by side between the first end plate 21 and the second end plate 22 and form a set of first intermediate plate sets, while two first intermediate plate sets are arranged between the first end plate 21 and the second end plate 22 for cooling the two sets of cells, respectively, in another embodiment, see fig. 5 and 6, two intermediate plates 23 are arranged side by side between the first end plate 21 and the second end plate 22 and form a set of second intermediate plate sets, while two second intermediate plate sets are arranged between the first end plate 21 and the second end plate 22 for cooling the two sets of cells, respectively, see fig. 7 and 8, one intermediate plate 23 is arranged between the first end plate 21 and the second end plate 22, while two intermediate plates 23 are arranged between the first end plate 21 and the second end plate 22 for cooling the two sets of cells, respectively.

In one embodiment, referring to fig. 3 and 4, a plurality of first straight flow passages 232 are formed between the intermediate plate 23 adjacent to the first end plate 21 and the base plate 1, and the plurality of first straight flow passages 232 are arranged at equal intervals;

The first end flow path 211 is a bent flow path, such as a U-shape or V-shape of the first end flow path 211, and one end of the first end flow path 211 communicates with one first straight flow path 232 and the other end of the first end flow path 211 communicates with the other first straight flow path 232.

In this embodiment, the cooling medium in the cold plate can flow from the first end flow channel 211 through the joint and then flows to the first straight flow channel 232 after being bent and conveyed in the first end flow channel 211, and in the case of a plurality of first end flow channels 211, the cooling medium in one first straight flow channel 232 can flow to the other first straight flow channel 232 through the other end of the first end flow channel 211 after flowing into one end of the first end flow channel 211, so that the conveying of the medium between the first end flow channel 211 and the first straight flow channel 232 is realized, and the cooling efficiency of the cold plate is ensured.

In one embodiment, referring to fig. 3 and 4, a plurality of second straight flow passages 233 are formed between the intermediate plate 23 adjacent to the second end plate 22 and the base plate 1, and the plurality of second straight flow passages 233 are arranged at equal intervals;

The second end flow channel 221 is a bent flow channel, for example, the second end flow channel 221 has a U-shape or a V-shape, and one end of the second end flow channel 221 is communicated with one second straight flow channel 233, and the other end of the second end flow channel 221 is communicated with the other second straight flow channel 233.

In this embodiment, when the cooling medium in the cold plate flows to the edge of the cold plate through the second straight flow channels 233, the cooling medium can be diverted through the second end flow channels 221, that is, flows to the second straight flow channels 233 after being bent and conveyed in the second end flow channels 221, and when the cooling medium in one second straight flow channel 233 flows into one end of the second end flow channels 221, the cooling medium in the other second straight flow channel 233 can be communicated through the other end of the second end flow channels 221 after flowing into one end of the second end flow channels 221, so that the conveying of the medium between the second end flow channels 221 and the second straight flow channels 233 is realized, and the continuous bending and extending of the flow channels in the cold plate is ensured.

In one embodiment, see fig. 9-11, the cold plate further comprises a connecting member 3, by means of which connecting member 3 adjacent intermediate plates 23 are connected, and/or the first end plate 21 and the intermediate plates 23 are connected by means of the connecting member 3, and/or the second end plate 22 and the intermediate plates 23 are connected by means of the connecting member 3.

In this embodiment, adjacent intermediate plates 23 may be butted together at first when the connection is made, and the gap between the adjacent intermediate plates 23 is less than or equal to 0.5mm, a part of the connection member 3 is overlapped with one side intermediate plate 23, another part of the connection member 3 is overlapped with the other side intermediate plate 23, then the connection member 3 is welded or bonded with the adjacent intermediate plate 23, and the through-flow passages 231 on the adjacent intermediate plates 23 are relatively communicated to ensure the tightness between the through-flow passages 231 on the adjacent intermediate plates 23.

In one embodiment, the first end plate 21 and the middle plate 23 may be connected by the connection member 3, and the second end plate 22 and the middle plate 23 may be connected by the connection member 3, so as to ensure the uniformity and stability of the connection strength between the respective plates on the cold plate.

In one embodiment, the overlap width of the connector 3 and the intermediate plate 23 is in the range of 5-15mm.

In this embodiment, the overlapping width is an overlapping dimension in a direction perpendicular to the direct flow path 231, and the overlapping width of any one of the connecting member 3 and the adjacent intermediate plate 23 may be equal to ensure the connection strength between the adjacent intermediate plates 23 on the basis of realizing the sealing between the adjacent intermediate plates 23.

In one embodiment, referring to fig. 12, the cold plate further includes a joint 4, the joint 4 having a first port and a second port, the first end flow channel 211 having a first liquid inlet and a first liquid outlet;

The joint 4 is connected to the first end plate 21, and the first port is communicated with the first liquid inlet, and the second port is communicated with the first liquid outlet;

or the second end flow channel 221 has a second liquid inlet and a second liquid outlet;

The joint 4 is connected to the second end plate 22, and the first port communicates with the second liquid inlet, and the second port communicates with the second liquid outlet.

In the embodiment, the connector can be connected with a pipeline for providing cooling working medium in the electric equipment and a flow channel in the cold plate, so that a cooling medium can enter and flow out of the flow channel in the cold plate through the channel in the connector, and the first port and the second port are positioned on the same side of the cold plate so as to improve the convenience of pipeline connection on the cold plate.

In one embodiment, the cold plate further comprises a first joint and a second joint, the first end flow channel 211 having a liquid inlet and the second end flow channel 221 having a liquid outlet;

The first joint is connected to the first side of the first end plate 21 and is communicated with the liquid inlet, the second joint is connected to the second side of the first end plate 21 and is communicated with the liquid outlet, and the second side of the first end plate 21 is the side, away from the first side, of the first end plate 21, so that the first joint and the second joint are respectively arranged on two sides of the cold plate, and the arrangement of the flow channels on the cold plate is simplified.

In one embodiment, the first end flow channel 211 includes a first converging flow channel and a first diverging flow channel, an inlet end of the first diverging flow channel being connected to the first converging flow channel, and an outlet end of the first diverging flow channel being connected to the direct flow channel 231;

The second end flow channel 221 includes a second converging flow channel and a second diverging flow channel, an inlet end of the second diverging flow channel is connected to the second converging flow channel, and an outlet end of the second diverging flow channel is connected to the straight flow channel 231, so as to split the cooling medium flowing in the first end flow channel 211 into a plurality of straight flow channels 231, and simultaneously split the cooling medium flowing in the second end flow channel 221 into a plurality of straight flow channels 231, thereby improving the cooling efficiency of the cold plate.

The embodiment of the application also provides a battery pack, which comprises the battery and the cold plate, wherein the cold plate is used for cooling the battery.

In this embodiment, the runner plate 2 is disposed on a first surface of the substrate 1, a second surface of the substrate 1 facing away from the first surface is a plane, the second surface contacts the battery, the laminating degree of the cold plate and the battery is improved by using the substrate 1 with a flat surface, and the cooling efficiency of the cold plate to the battery is ensured.

The embodiment of the application also provides electric equipment, which comprises the battery pack.

In this embodiment, the powered device may be a vehicle or an energy storage device.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (17)

1. A cold plate for cooling a battery, comprising:

A first unit having an end flow passage therein;

At least one second unit having a straight flow channel (231) therein;

At least one of the second units is spliced with the first unit in the extending direction of the straight flow path (231) so that the straight flow path (231) communicates with the end flow path.

2. Cold plate according to claim 1, characterized in that it comprises a plurality of said second units arranged in the direction of extension of the direct current channel (231) and connected in sequence to form a second group of units, wherein the second units of at least one end of the second group of units are connected to the first unit in the direction of extension of the direct current channel (231).

3. Cold plate according to claim 1 or 2, characterized in that it comprises:

a substrate (1);

Runner board (2), runner board (2) include end plate and at least one intermediate plate (23), the end plate connect in on base plate (1) to form first unit, intermediate plate (23) connect in on base plate (1) to form the second unit, the intermediate plate with the end plate concatenation.

4. A cold plate according to claim 3, wherein the end plates comprise a first end plate (21) and a second end plate (22), the first end plate (21) being connected to the base plate (1) and forming a first end flow channel (211) with the base plate (1), the second end plate (22) being connected to the base plate (1) and forming a second end flow channel (221) with the base plate (1);

At least one intermediate plate (23) is arranged between the first end plate (21) and the second end plate (22), and a straight flow channel (231) is formed between the intermediate plate (23) and the base plate (1), and the straight flow channel (231) is communicated between the first end flow channel (211) and the second end flow channel (221).

5. The cold plate according to claim 4, wherein the first end plate (21) and the second end plate (22) are arranged at opposite intervals, the first end plate (21) and the second end plate (22) being adapted to be opposite to both ends of the battery;

At least one of the intermediate plates (23) is arranged between the first end plate (21) and the second end plate (22) for being opposed to the middle part of the battery.

6. The cold plate according to claim 4, wherein the flow field plate (2) comprises one first end plate (21) and two second end plates (22);

The two second end plates (22) are symmetrically arranged on two sides of the first end plate (21), a first area is formed between one second end plate (22) and the first end plate (21), and a second area is formed between the other second end plate (22) and the first end plate (21);

The intermediate plate (23) comprises a plurality of intermediate plates of a first type and a plurality of intermediate plates of a second type, the plurality of intermediate plates of the first type are arranged in the first area side by side, and the plurality of intermediate plates of the second type are arranged in the second area side by side.

7. Cold plate according to claim 6, wherein the first end plate (21) has a first end region and a second end region, the first end region forming a first heat exchange region with the first region and the second end region forming a second heat exchange region with the second region;

The first heat exchange area and the second heat exchange area are used for exchanging heat for the two batteries.

8. Cold plate according to claim 6, wherein two of the second end plates (22) are intended to be opposite to the ends of the battery.

9. The cold plate of claim 4, wherein the cold plate has a length dimension and a width dimension, the length dimension of the cold plate being greater than the width dimension;

The first end plate (21) and the second end plate (22) are arranged at intervals in the length direction of the cold plate, and the plurality of direct current channels (231) are parallel to the length direction of the cold plate;

Or the first end plate (21) and the second end plate (22) are arranged at intervals in the width direction of the cold plate, and the plurality of direct current channels (231) are parallel to the width direction of the cold plate.

10. The cold plate according to claim 4, wherein a plurality of first straight flow passages (232) are formed between the intermediate plate (23) adjacent to the first end plate (21) and the base plate (1), the plurality of first straight flow passages (232) being arranged at equal intervals;

The first end flow passage (211) is a bent flow passage, and one end of the first end flow passage (211) is communicated with one of the first straight flow passages (232), and the other end of the first end flow passage (211) is communicated with the other of the first straight flow passages (232).

11. The cold plate according to claim 4, wherein a plurality of second straight flow channels (233) are formed between the intermediate plate (23) adjacent to the second end plate (22) and the base plate (1), the plurality of second straight flow channels (233) being arranged at equal intervals;

The second end flow channel (221) is a bent flow channel, one end of the second end flow channel (221) is communicated with one second straight flow channel (233), and the other end of the second end flow channel (221) is communicated with the other second straight flow channel (233).

12. Cold plate according to claim 4, further comprising a connecting element (3), wherein adjacent intermediate plates (23) are connected by the connecting element (3), and/or wherein the first end plate (21) and the intermediate plate (23) are connected by the connecting element (3), and/or wherein the second end plate (22) and the intermediate plate (23) are connected by the connecting element (3).

13. Cold plate according to claim 12, characterized in that the overlap width of the connecting piece (3) and the intermediate plate (23) is in the range of 5-15mm.

14. The cold plate according to claim 4, further comprising a joint (4), the joint (4) having a first port and a second port thereon;

The first end flow channel (211) is provided with a first liquid inlet and a first liquid outlet;

the joint (4) is connected to the first end plate (21), the first port is communicated with the first liquid inlet, and the second port is communicated with the first liquid outlet;

Or the second end flow channel (221) is provided with a second liquid inlet and a second liquid outlet;

The joint (4) is connected to the second end plate (22), and the first port communicates with the second liquid inlet, and the second port communicates with the second liquid outlet.

15. The cold plate according to claim 4, wherein the first end flow channel (211) comprises a first converging flow channel and a first diverging flow channel, an inlet end of the first diverging flow channel being connected to the first converging flow channel and an outlet end of the first diverging flow channel being connected to the direct flow channel (231);

The second end flow channel (221) comprises a second converging flow channel and a second diverging flow channel, the inlet end of the second diverging flow channel is connected to the second converging flow channel, and the outlet end of the second diverging flow channel is connected to the direct flow channel (231).

16. A battery pack comprising a battery and the cold plate of any one of claims 1-15 for cooling the battery.

17. A powered device comprising the battery pack of claim 16.