Heat dissipation device for power battery pack and power battery pack

Abstract

The utility model belongs to the technical field of energy storage equipment, and particularly relates to a heat dissipation device for a power battery pack and the power battery pack, which comprises an air cooling box, a heat conducting plate, a heat dissipation plate, a heat dissipation fan, a battery frame and a lithium battery. The air cooling box is provided with a first air cooling hole and a second air cooling hole, and the first air cooling hole and the lithium battery are arranged at an interval to form a first gap. The second air cooling holes, the lithium batteries and the heat conduction plates are arranged at intervals to form second gaps. According to the heat dissipation device for the power battery pack and the power battery pack, the first air cooling channel and the second air cooling channel can dissipate heat generated by a lithium battery, airflow in the air cooling box is accelerated through the heat dissipation fan, the airflow rapidly flows out of the first air cooling channel, the second air cooling channel and the heat dissipation holes and exchanges heat with air, and the heat dissipation efficiency is improved. Heat dissipation and temperature reduction are accelerated, aging of the battery pack is slowed down, performance is improved, the service life is prolonged, and safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage equipment, and in particular relates to a heat dissipation device for a power battery pack and a power battery pack. Background Art

[0002] With global energy supply constraints, climate change, and environmental pollution looming, more and more countries are recognizing the importance of renewable energy and are vigorously developing it, particularly wind and photovoltaic power. With the growth of wind and photovoltaic power generation, the demand for auxiliary power services such as peak and frequency regulation, and output smoothing has increased significantly. Energy storage, as an additional flexible regulation resource, will play a crucial role in accommodating renewable energy, regulating frequency, and shifting peaks and valleys.

[0003] According to the national strategic development plan, the 14th Five-Year Plan is a period of large-scale development for the energy storage industry. Currently, electrochemical energy storage offers the highest overall cost-effectiveness, with lithium iron phosphate offering the best cycle life and cost. As a core component of energy storage systems, battery packs are crucial for their safety, reliability, and thermal management.

[0004] Existing battery packs tend to generate a lot of heat during use, and the heat is difficult to dissipate, causing the battery pack temperature to rise, resulting in accelerated aging, reduced performance, shortened lifespan, and even potential safety issues. Utility Model Content

[0005] The purpose of the present invention is to provide a heat dissipation device for a power battery pack and a power battery pack, aiming to solve the technical problem in the prior art that heat is difficult to dissipate, resulting in an increase in the temperature of the battery pack, which causes the battery pack to age faster, reduce performance, shorten life, and even cause safety problems.

[0006] To achieve the above-mentioned purpose, the present invention provides a heat dissipation device for a power battery pack and a power battery pack, comprising an air cooling box, a heat conducting plate, a heat dissipation plate, a heat dissipation fan, a battery frame and a lithium battery. The heat conducting plate is arranged between the air cooling box and the lithium battery and is respectively connected to the air cooling box and the lithium battery. The heat dissipation plate is arranged in the air cooling box and is respectively connected to the air cooling box and the heat dissipation fan. The heat dissipation fan is arranged on one side of the lithium battery. The battery frame is connected to the air cooling box, and the lithium battery is installed in the battery frame.

[0007] The air cooling box is provided with a first air cooling hole and a second air cooling hole, wherein the first air cooling hole is provided at the top of the air cooling box, the first air cooling hole is provided above the lithium battery, and is spaced apart from the lithium battery to form a first gap, and the first air cooling hole and the first gap form a first air cooling channel; the second air cooling hole is provided on the side of the air cooling box, the second air cooling hole is provided on one side of the lithium battery and the heat conducting plate, and is spaced apart from the lithium battery and the heat conducting plate to form a second gap, and the second air cooling hole and the second gap form a second air cooling channel;

[0008] The heat conducting plate is provided with a heat conducting hole, and the heat conducting hole is arranged on one side of the lithium battery;

[0009] The heat dissipation plate is provided with heat dissipation holes, and the heat dissipation fan is arranged in the heat dissipation holes;

[0010] The battery frame is provided with ventilation holes, which are arranged on one side of the heat dissipation holes. The second air cooling holes, the heat conduction holes and the ventilation holes are arranged in a overlapping manner.

[0011] As an optional solution of the present invention, a plurality of first air-cooling holes are provided, and the number of the first air-cooling channels is the same as the number of the first air-cooling holes.

[0012] As an optional solution of the present invention, a plurality of second air-cooling holes are provided, and the number of the second air-cooling channels is the same as the number of the second air-cooling holes.

[0013] As an optional solution of the present invention, there are multiple heat conduction holes, which are evenly arranged on the heat conduction plate.

[0014] As an optional solution of the present invention, the number of the ventilation holes is the same as that of the heat conduction holes, and they are evenly arranged on the battery frame.

[0015] As an optional solution of the present invention, there are multiple lithium batteries, and adjacent lithium batteries are arranged in parallel and at intervals.

[0016] As an optional solution of the present invention, the battery frame is provided with multiple, and the multiple lithium batteries are fixedly installed in the battery frame; the battery frame is provided with a battery positioning hole, and the lithium batteries are fixedly installed in the battery positioning hole.

[0017] As an optional solution of the present invention, a fan guard is provided on one side of the heat dissipation fan, and the fan guard is fixedly connected to the air cooling box.

[0018] The heat dissipation device for a power battery pack and the power battery pack provided by the embodiments of the present invention have at least one of the following technical effects:

[0019] The heat dissipation device for a power battery pack and the power battery pack provided in the present application include an air cooling box, a heat conducting plate, a heat dissipation plate, a heat dissipation fan, a battery frame and a lithium battery. A first air cooling duct is provided between the air cooling box and the lithium battery, and a second air cooling duct is provided between the air cooling box and the lithium battery and the heat conducting plate. The first air cooling duct and the second air cooling duct can dissipate the heat generated by the lithium battery. The heat dissipation fan accelerates the airflow in the air cooling box, and the airflow quickly flows out from the first air cooling duct, the second air cooling duct and the heat dissipation holes, and exchanges heat with the air, thereby accelerating heat dissipation and temperature reduction, slowing down the aging of the battery pack, improving performance, extending life, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a schematic structural diagram of a heat dissipation device for a power battery pack and a power battery pack provided in an embodiment of the present utility model.

[0022] Figure 2 This is a schematic structural diagram of a heat dissipation device for a power battery pack and a power battery pack without an air cooling box provided in an embodiment of the present invention.

[0023] Figure 3 This is a schematic structural diagram of a heat dissipation device for a power battery pack and a heat conducting plate of a power battery pack provided in an embodiment of the present utility model.

[0024] Figure 4 This is a schematic structural diagram of a battery frame of a heat dissipation device for a power battery pack and a heat conducting plate of a power battery pack provided in an embodiment of the present utility model.

[0025] Among them, the reference numerals in the figures are:

[0026] 1. Air cooling box; 2. Heat conducting plate; 3. Heat dissipation plate; 4. Cooling fan; 5. Battery frame; 6. Lithium battery;

[0027] 11. First air cooling hole; 12. Second air cooling hole;

[0028] 21. Thermal holes;

[0029] 31. Heat dissipation holes;

[0030] 41. Fan guard;

[0031] 51. Ventilation hole; 52. Battery positioning hole. DETAILED DESCRIPTION

[0032] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0035] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0036] In one embodiment of the present invention, Figures 1 to 4 As shown, a heat dissipation device for a power battery pack and a power battery pack are provided, including an air cooling box 1, a heat conducting plate 2, a heat sink 3, a heat dissipation fan 4, a battery frame 5 and a lithium battery 6. The heat conducting plate 2 is arranged between the air cooling box 1 and the lithium battery 6, and is fixedly connected to the air cooling box 1 and the lithium battery 6 respectively. The heat dissipation plate 3 is arranged in the air cooling box 1, and is fixedly connected to the air cooling box 1 and the heat dissipation fan 4 respectively. The heat dissipation plate 3 adopts a heat-conducting material to accelerate heat dissipation. The heat dissipation fan 4 is arranged on one side of the lithium battery 6, the battery frame 5 is fixedly connected in the air cooling box 1, and the lithium battery 6 is installed in the battery frame 5. The heat dissipation fan 4 accelerates the flow of air and improves the heat dissipation efficiency.

[0037] The air cooling box 1 is provided with a first air cooling hole 11 and a second air cooling hole 12. The first air cooling hole 11 is provided at the top of the air cooling box 1. The first air cooling hole 11 is provided above the lithium battery 6 and is spaced apart from the lithium battery 6 to form a first gap. The first air cooling hole 11 and the first gap form a first air cooling channel. The second air cooling hole 12 is provided on the side of the air cooling box 1. The second air cooling hole 12 is provided on one side of the lithium battery 6 and the heat conducting plate 2 and is spaced apart from the lithium battery 6 and the heat conducting plate 2 to form a second gap. The second air cooling hole 12 and the second gap form a second air cooling channel. The first air cooling channel and the second air cooling channel can extract heat from the air cooling box 1.

[0038] The heat conducting plate 2 is provided with a heat conducting hole 21, which is arranged on one side of the lithium battery 6. The heat conducting hole 21 accelerates the heat dissipation in the air cooling box 1.

[0039] The heat dissipation plate 3 is provided with heat dissipation holes 31, and the heat dissipation fan 4 is arranged in the heat dissipation holes 31. The heat dissipation holes 31 accelerate the heat dissipation in the air cooling box 1.

[0040] The battery frame 5 is provided with ventilation holes 51, which are arranged on one side of the heat dissipation holes 31. The second air cooling holes 12, the heat conduction holes 21 and the ventilation holes 51 are arranged to overlap. The ventilation holes 51 accelerate the heat dissipation in the air cooling box 1.

[0041] The heat dissipation device for a power battery pack and the power battery pack provided in the present application, the first air cooling duct and the second air cooling duct can dissipate the heat generated by the lithium battery 6, and the air flow in the air cooling box 1 is accelerated by the heat dissipation fan 4. The air flow quickly flows out from the first air cooling duct, the second air cooling duct, and the heat dissipation holes 31, and exchanges heat with the air, thereby accelerating heat dissipation and temperature reduction, slowing down the aging of the battery pack, improving performance, extending life, and improving safety.

[0042] In another embodiment of the present invention, the heat dissipation device for a power battery pack and the power battery pack are provided with a plurality of first air cooling holes 11, and the number of first air cooling channels is the same as the number of first air cooling holes 11. By providing a plurality of first air cooling holes 11 and first air cooling channels, heat dissipation efficiency is improved.

[0043] In another embodiment of the present invention, the heat dissipation device for a power battery pack and the power battery pack are provided with a plurality of second air cooling holes 12, and the number of second air cooling channels is the same as the number of second air cooling holes 12. By providing a plurality of second air cooling holes 12 and second air cooling channels, heat dissipation efficiency is improved.

[0044] In another embodiment of the present invention, the heat dissipation device for the power battery pack and the power battery pack are provided with a plurality of heat conduction holes 21, which are evenly arranged on the heat conduction plate 2. The provision of multiple heat conduction holes 21 improves the heat dissipation efficiency.

[0045] In another embodiment of the present invention, the number of ventilation holes 51 of the heat dissipation device for the power battery pack and the power battery pack is the same as the number of heat conduction holes 21, and they are evenly arranged on the battery frame 5. The provision of multiple ventilation holes 51 improves heat dissipation efficiency.

[0046] In another embodiment of the present invention, the heat dissipation device for the power battery pack and the lithium battery 6 of the power battery pack are provided with multiple lithium batteries 6, and adjacent lithium batteries 6 are arranged in parallel and spaced apart to ensure that the lithium batteries 6 have space for heat dissipation and accelerate heat dissipation.

[0047] In another embodiment of the present invention, the heat dissipation device for the power battery pack and the battery frame 5 of the power battery pack are provided with multiple lithium batteries 6 fixedly mounted on the battery frame 5. The battery frame 5 is provided with a battery positioning hole 52, and the lithium batteries 6 are fixedly mounted in the battery positioning hole 52.

[0048] In another embodiment of the present invention, a fan guard 41 is provided on one side of the heat dissipation device for the power battery pack and the heat dissipation fan 4 of the power battery pack, and the fan guard 41 is fixedly connected to the air cooling box 1. The fan guard 41 has a protective effect on the heat dissipation fan 4.

[0049] The heat dissipation device for a power battery pack and the power battery pack provided in the present application, the first air cooling duct and the second air cooling duct can dissipate the heat generated by the lithium battery 6, and the air flow in the air cooling box 1 is accelerated by the heat dissipation fan 4. The air flow quickly flows out from the first air cooling duct, the second air cooling duct, and the heat dissipation holes 31, and exchanges heat with the air, thereby accelerating heat dissipation and temperature reduction, slowing down the aging of the battery pack, improving performance, extending life, and improving safety.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat dissipation device for a power battery pack and a power battery pack, characterized in that: It includes an air-cooling box, a heat conducting plate, a heat dissipation plate, a cooling fan, a battery frame and a lithium battery. The heat conducting plate is arranged between the air-cooling box and the lithium battery and is connected to the air-cooling box and the lithium battery respectively. The heat dissipation plate is arranged in the air-cooling box and is connected to the air-cooling box and the cooling fan respectively. The cooling fan is arranged on one side of the lithium battery. The battery frame is connected to the air-cooling box, and the lithium battery is installed in the battery frame. The air cooling box is provided with a first air cooling hole and a second air cooling hole, wherein the first air cooling hole is provided at the top of the air cooling box, the first air cooling hole is provided above the lithium battery, and is spaced apart from the lithium battery to form a first gap, and the first air cooling hole and the first gap form a first air cooling channel; the second air cooling hole is provided on the side of the air cooling box, the second air cooling hole is provided on one side of the lithium battery and the heat conducting plate, and is spaced apart from the lithium battery and the heat conducting plate to form a second gap, and the second air cooling hole and the second gap form a second air cooling channel; The heat conducting plate is provided with a heat conducting hole, and the heat conducting hole is arranged on one side of the lithium battery; The heat dissipation plate is provided with heat dissipation holes, and the heat dissipation fan is arranged in the heat dissipation holes; The battery frame is provided with ventilation holes, which are arranged on one side of the heat dissipation holes. The second air cooling holes, the heat conduction holes and the ventilation holes are arranged in a overlapping manner.

2. A heat dissipation device for a power battery pack and a power battery pack according to claim 1, characterized in that: There are a plurality of first air cooling holes, and the number of the first air cooling channels is the same as the number of the first air cooling holes.

3. A heat dissipation device for a power battery pack and a power battery pack according to claim 1, characterized in that: There are multiple second air cooling holes, and the number of the second air cooling channels is the same as the number of the second air cooling holes.

4. A heat dissipation device for a power battery pack and a power battery pack according to claim 1, characterized in that: There are a plurality of heat conduction holes, which are evenly arranged on the heat conduction plate.

5. A heat dissipation device for a power battery pack and a power battery pack according to claim 4, characterized in that: The number of the ventilation holes is the same as that of the heat conduction holes, and they are evenly arranged on the battery frame.

6. The heat dissipation device for a power battery pack and the power battery pack according to claim 1, characterized in that: There are multiple lithium batteries, and adjacent lithium batteries are arranged in parallel and at intervals.

7. A heat dissipation device for a power battery pack and a power battery pack according to claim 6, characterized in that: The battery frame is provided with a plurality of lithium batteries, and the plurality of lithium batteries are fixedly installed in the battery frame; the battery frame is provided with a battery positioning hole, and the lithium batteries are fixedly installed in the battery positioning hole.

8. The heat dissipation device for a power battery pack and the power battery pack according to claim 1, characterized in that: A fan guard is provided on one side of the heat dissipation fan, and the fan guard is fixedly connected to the air cooling box.

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