Heat dissipation plate and lithium battery heat dissipation bag

Abstract

The utility model discloses a heat dissipation plate and a lithium battery heat dissipation pack, the heat dissipation plate comprises a runner plate and a packaging plate welded on the runner plate in a matching manner, the runner plate is provided with a plurality of grooves, the packaging plate covers the upper ends of all the grooves in a matching manner to form a plurality of closed runners, and each runner is filled with a cooling medium. According to the utility model, the heat dissipation plate is arranged to be of a structure formed by welding the runner plate and the packaging plate, and the runner plate is internally provided with the plurality of grooves capable of being filled with the cooling medium, so that a plurality of closed runners can be formed in the heat dissipation plate, and the heat dissipation plate can have excellent heat dissipation efficiency while the use is reduced or the assistance of an external heat dissipation part is not needed; the lithium battery heat dissipation device is simple in structure and wide in application range, during use, a lithium battery is placed between the packaging plates of the two heat dissipation plates in a matched mode, the lithium battery is communicated with an external connecting device through the receding hole grooves, assembly is convenient and fast, the heat dissipation bag can conduct heat dissipation on the internal lithium battery from the upper end and the lower end at the same time, heat dissipation efficiency is high, the temperature rise of the lithium battery is relatively slow, output is stable, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery packaging, in particular to a heat dissipation plate and a lithium battery heat dissipation package. Background Art

[0002] For safety reasons, some large lithium battery packs are placed in metal protective shells to avoid adverse consequences caused by accidental leakage of electrolyte. However, the metal shell will confine the lithium battery to a smaller space, which is not conducive to battery heat dissipation. Therefore, in most applications, external heat sinks are used or the protective shell is placed in a well-ventilated environment, which makes installation, use and wiring operations more troublesome. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a heat sink and a lithium battery heat sink pack, which can form a plurality of closed flow channels filled with cooling medium in the heat sink, have good heat dissipation efficiency and a wide range of applications. The heat sink pack can dissipate heat from the upper and lower ends simultaneously to the internal lithium battery, the lithium battery heats up relatively slowly, the output is stable and the service life is long.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A heat sink for a large lithium battery pack, comprising a flow channel plate and a packaging plate matched and welded thereon, wherein:

[0006] The middle part of the flow channel plate is a flat plate structure, and the end part thereof facing the packaging plate has a plurality of grooves, and the plurality of grooves are interconnected;

[0007] The middle part of the packaging plate is a flat plate structure and matches and covers the upper ends of all the grooves to form a plurality of closed flow channels, each of which is filled with a cooling medium.

[0008] As a further elaboration of the above technical solution:

[0009] In the above technical solution, each of the grooves is in an I-shape, a U-shape, an L-shape, or a U-shape, and each of the flow channels is formed by connecting one or more grooves end to end.

[0010] In the above technical solution, the middle parts of the flow channel plate and the packaging plate are provided with matching bulges, and each of the grooves is provided on the bulges; the flow channel plate and the packaging plate are provided with two or more positioning connectors on the periphery of their bulges.

[0011] In the above technical solution, the flow channel plate is an aluminum plate.

[0012] In the above technical solution, the cooling medium is a cooling liquid.

[0013] In the above technical solution, one or more avoidance hole grooves are matched on the convex side walls of the flow channel plate and the packaging plate.

[0014] Another technical solution adopted by the utility model is as follows:

[0015] A lithium battery heat dissipation pack is formed by fastening and fixing two heat dissipation plates described in the above technical solution together, wherein the two flow channel plates thereon are both facing outwards, the distance between the convex humps on the two packaging plates is greater than or equal to the thickness of the lithium battery, and the contours of the two convex humps match the contours of the lithium battery.

[0016] In the above technical solution, avoidance holes are provided on the side walls of the flow channel plate and the convex bulge on the packaging plate of at least one of the heat dissipation plates.

[0017] Compared with the prior art, the beneficial effect of the utility model is that by setting the heat sink to a structure welded by a flow channel plate and a packaging plate, and arranging a plurality of grooves that can be filled with cooling medium in the flow channel plate, a plurality of closed flow channels can be formed in the heat sink, and the heat sink can have excellent heat dissipation efficiency while reducing the use of or not requiring the assistance of external heat dissipation components, and has a wide range of applications. When in use, the lithium battery is matched and placed between the packaging plates of the two heat sinks, and connected to the external connection device through the avoidance hole groove, which is convenient to assemble, and the heat dissipation package can dissipate heat to the internal lithium battery from the upper and lower ends at the same time, with high heat dissipation efficiency, relatively slow heating of the lithium battery, stable output and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the exploded structure of an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a flow channel plate in one embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a packaging board in one embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the exploded structure of another embodiment of the utility model.

[0022] In the figure: 10, flow channel plate; 11, groove; 20, packaging plate; 30, flow channel; 1, positioning connector; 2, convex bump; 3, avoidance hole groove. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] like Figure 1-3 As shown, a heat dissipation plate for a large lithium battery pack includes a flow channel plate 10 and a packaging plate 20 matched and welded thereon, wherein:

[0026] The middle part of the flow channel plate 10 is a flat plate structure, and the end thereof facing the packaging plate 20 has a plurality of grooves 11, and the plurality of grooves 11 are interconnected;

[0027] The middle portion of the packaging plate 20 is a flat plate structure and matches and covers the upper ends of all the grooves 11 to form a plurality of closed flow channels 30 , each of which is filled with a cooling medium.

[0028] Specifically, each groove 11 is in an I-shape, a U-shape, an L-shape, or a U-shape, and each flow channel 30 is formed by connecting one or more grooves 11 end to end.

[0029] In this embodiment, a plurality of grooves 11 are arranged in parallel on a plane in a long or short manner and are connected end to end, so that a plurality of flow channels 30 which are closely arranged and have a certain interval are formed on the flow channel plate 10 .

[0030] Specifically, a matching convex bulge 2 is provided in the middle of the flow channel plate 10 and the packaging plate 20, and each groove 11 is provided on the convex bulge 2; two or more positioning connectors 1 are provided on the periphery of the convex bulge 2 of the flow channel plate 10 and the packaging plate 20.

[0031] It can be understood that the positioning connector 1 facilitates the positioning application of the heat sink, the provision of the convex bump 2 can increase the accommodation space of the heat sink, and all the grooves 11 can be arranged in one plane for easy processing.

[0032] Specifically, the flow channel plate 10 is an aluminum plate, and the cooling medium is a coolant.

[0033] It is understandable that the aluminum plate has the advantages of high heat dissipation efficiency and easy production and processing, which can provide heat dissipation plate quality and reduce production costs. In application, you can choose to fill coolant or cold enzyme according to the actual application situation.

[0034] Specifically, one or more avoidance slots 3 are matched on the side walls of the convex bulges 2 of the flow channel plate 10 and the packaging plate 20 .

[0035] It can be understood that the avoidance holes 3 matched on the flow channel plate 10 and the packaging plate 20 facilitate the external connection components to pass through the heat sink and connect to the lithium batteries therein.

[0036] During welding, the convex bump 2 of the flow channel plate 10 is placed downward, the cooling medium is filled in the groove 11, and then the packaging plate 20 is buckled thereon so that the convex bump 2 on it covers the groove 11, and the packaging plate 20 is welded to the flow channel plate 10 by vacuum lead welding, so that a plurality of closed flow channels 30 filled with cooling medium can be formed between the flow channel plate 10 and the packaging plate 20.

[0037] The utility model configures the heat sink to be a structure formed by welding a flow channel plate 10 and a packaging plate 20, and arranges a plurality of grooves 11 in the flow channel plate 10 that can be filled with a cooling medium, so that a plurality of closed flow channels 30 can be formed in the heat sink. The heat sink can have excellent heat dissipation efficiency while reducing the use of or not requiring the assistance of external heat dissipation components, is easy to install, and has a wide range of applications.

[0038] As a specific application example of the above embodiment, Figure 4 As shown, a lithium battery heat dissipation pack is formed by buckling and fixing two heat dissipation plates in the above embodiments together, with the two flow channel plates 10 thereon facing outwards, the distance between the convex humps 2 on the two packaging plates 20 being greater than or equal to the thickness of the lithium battery, and the contours of the two convex humps 2 matching the contours of the lithium battery.

[0039] Specifically, at least one of the flow channel plate 10 of the heat dissipation plate and the side wall of the convex bump 2 on the packaging plate 20 is provided with an avoidance hole groove 3.

[0040] When in use, the lithium battery is matched and placed between the packaging plates 20 of the two heat sinks, connected to the connecting devices with the outside world, and the two heat sinks are fixedly connected together through positioning connectors. The assembly is convenient, and the heat dissipation package can dissipate heat from the upper and lower ends of the lithium battery at the same time. The heat dissipation efficiency is high, the lithium battery heats up relatively slowly, the output is stable, and the service life is long.

[0041] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A heat sink, characterized in that: It includes a flow channel plate and a packaging plate matched and welded thereon, wherein: The middle part of the flow channel plate is a flat plate structure, and a plurality of grooves are arranged at the end thereof facing the packaging plate, and the plurality of grooves are interconnected; The middle part of the packaging plate is a flat plate structure and matches and covers the upper ends of all the grooves to form a plurality of closed flow channels, each of which is filled with a cooling medium.

2. A heat sink according to claim 1, characterized in that: Each of the grooves is in an I-shape, a U-shape, an L-shape, or a U-shape, and each of the flow channels is formed by connecting one or more of the grooves end to end.

3. The heat dissipation plate according to claim 1, characterized in that: The middle parts of the flow channel plate and the packaging plate are both provided with matching convex bulges, and each of the grooves is provided on the convex bulges; the flow channel plate and the packaging plate are both provided with two or more positioning connectors on the periphery of the convex bulges.

4. The heat dissipation plate according to claim 1, characterized in that: The flow channel plate is an aluminum plate.

5. The heat dissipation plate according to claim 1, characterized in that: The cooling medium is cooling liquid.

6. The heat sink according to claim 1, characterized in that: The convex side walls of the flow channel plate and the packaging plate are matched with one or more avoidance hole grooves.

7. A lithium battery heat dissipation pack, characterized in that: It is formed by fastening and fixing two heat sinks as described in any one of claims 1 to 5, wherein the two flow channel plates thereon face outwards, the distance between the convex bumps on the two packaging plates is greater than or equal to the thickness of the lithium battery, and the contours of the two convex bumps match the contours of the lithium battery.

8. A lithium battery heat dissipation pack according to claim 7, characterized in that: At least one of the heat dissipation plates has a flow channel plate and a side wall of a convex bump on the packaging plate, and an avoidance hole groove is provided.

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