A heat dissipation device and a battery pack

Abstract

The present invention belongs to the technical field of battery heat dissipation, and discloses a heat dissipation device and a battery pack. The heat dissipation device includes a box body and a first heat dissipation component. Air inlets and air outlets are respectively formed at two ends of the box body, and the air inlets and air outlets are communicated to form a heat dissipation air duct. The first heat dissipation component is arranged in the box body and located outside the heat dissipation air duct, and the battery module can be installed close to the heat dissipation air duct and the first heat dissipation component; the battery pack includes the battery module and the above-mentioned heat dissipation device, and the battery module is installed on the heat dissipation device. The heat dissipation device dissipates heat from the battery module through two ways, namely the heat dissipation air duct and the first heat dissipation component, improves the heat dissipation effect, and thus increases the service life of the battery module.

Description

Technical Field

[0001] The present invention relates to the technical field of battery heat dissipation, and in particular to a heat dissipation device and a battery pack. Background Art

[0002] With the continuous advancement of the structural reform of the energy supply side, the energy development has shifted from extensive to high-quality development. To further solve the problem of energy volatility, technologies such as energy storage need to be integrated into the power grid optimization, and energy storage devices are introduced into base stations.

[0003] Currently, most battery companies use a locking screw grouping structure or a battery cell welding process. This grouping method is simple to operate and is protected by a box externally. However, since the heat generated by the batteries in the box cannot form a flow and can only be dissipated through the box body itself, the heat dissipation effect is poor, resulting in large energy losses and seriously affecting the service life of the battery cells in cyclic use.

[0004] Based on the above situation, it is urgent for us to design a heat dissipation device and a battery pack to solve the above problems. Summary of the Invention

[0005] One object of the present invention is to provide a heat dissipation device that can improve the heat dissipation effect.

[0006] Another object of the present invention is to provide a battery pack with a good heat dissipation effect of the heat dissipation device, thereby improving the service life of the battery module.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] On the one hand, a heat dissipation device for dissipating heat from a battery module is disclosed, including:

[0009] A box body, with an air inlet and an air outlet respectively opened at both ends of the box body. The air inlet and the air outlet are connected to form a heat dissipation air duct, and the battery module can be installed close to the heat dissipation air duct;

[0010] A first heat dissipation component, arranged on the box body and located outside the heat dissipation air duct. The battery module can be installed close to the first heat dissipation component so that the first heat dissipation component can dissipate heat from the battery module.

[0011] As a preferred solution, at least part of the heat dissipation air duct is provided as a second heat dissipation component. The second heat dissipation component connects the air inlet and the air outlet, and the second heat dissipation component can dissipate heat from the battery module.

[0012] As a preferred solution, the second heat dissipation component includes:

[0013] A first mounting plate;

[0014] A second mounting plate, which is disposed opposite to the first mounting plate;

[0015] A first heat dissipation tooth, one end of which is detachably connected to the first mounting plate, and the other end of which is detachably connected to the second mounting plate;

[0016] A second heat dissipation tooth, which is inserted into the first heat dissipation tooth and is located between the first mounting plate and the second mounting plate.

[0017] As a preferred solution, the first heat dissipation tooth is arranged in an inverted Z shape, the second heat dissipation tooth is inserted into the middle of the first heat dissipation tooth, and both ends of the second heat dissipation tooth are respectively detachably connected to the first mounting plate and the second mounting plate.

[0018] As a preferred solution, the first heat dissipation tooth is provided with a first slot, the second heat dissipation tooth is provided with a second slot, and the first heat dissipation tooth and the second heat dissipation tooth are inserted into each other so that the first slot is snapped onto the second heat dissipation tooth, and the second slot is snapped onto the first heat dissipation tooth.

[0019] As a preferred solution, the first heat dissipation component is arranged as a water-cooling component, and the water-cooling component includes a first water pipe layer and a second water pipe layer arranged in a stacked manner.

[0020] As a preferred solution, the water channel of the second water pipe layer is integrally formed with the box body, and the water channel of the second water pipe layer is opened in the box body.

[0021] As a preferred solution, the first heat dissipation component is located at the end of the heat dissipation air duct.

[0022] As a preferred solution, the heat dissipation device further includes a heat conducting member, the heat conducting member is arranged on the side walls of the heat dissipation air duct and the first heat dissipation component, and the battery module can be abutted against the heat dissipation air duct and the first heat dissipation component through the heat conducting member.

[0023] On the other hand, a battery pack is also disclosed, which includes a battery module and the above heat dissipation device, the heat dissipation air duct is clamped between two adjacent battery modules, and the bottom of the battery module abuts against the first heat dissipation component.

[0024] The beneficial effects of the present invention are as follows: A heat dissipation device and a battery pack are provided. The battery module can be installed close to the heat dissipation air duct and the first heat dissipation component of the heat dissipation device. The heat dissipation air duct and the first heat dissipation component jointly dissipate heat from the battery module, improving the heat dissipation effect. The battery pack includes a battery module and the above heat dissipation device, and the battery module is installed on the heat dissipation device, thereby increasing the service life of the battery module. Description of the Drawings

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 It is an exploded view of the battery pack;

[0027] Figure 2 It is a schematic structural view of the second heat dissipation component;

[0028] Figure 3 It is an exploded view of the second heat dissipation component;

[0029] Figure 4 It is a schematic structural view of the battery pack.

[0030] Figures 1 to 4 In:

[0031] 1. Box body; 11. Cover plate; 111. Air outlet; 12. Bottom plate; 121. Air inlet; 13. Front panel;

[0032] 2. First heat dissipation component; 21. First water pipe layer; 22. Second water pipe layer;

[0033] 3. Second heat dissipation component; 31. First mounting plate; 311. T-shaped groove; 32. Second mounting plate; 33. First heat dissipation tooth; 331. First slot; 332. T-shaped plug; 34. Second heat dissipation tooth; 341. Second slot;

[0034] 4. Heat conducting member;

[0035] 5. Battery module. Specific embodiments

[0036] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0037] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0039] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0040] As Figure 1 shown, this embodiment provides a heat dissipation device for dissipating heat from the battery module 5, which specifically includes a box body 1 and a first heat dissipation component 2. The box body 1 includes a cover plate 11, a bottom plate 12 and a front panel 13. The cover plate 11, the bottom plate 12 and the front panel 13 are connected to each other and enclose a receiving cavity. An air outlet 111 and an air inlet 121 are respectively formed on the cover plate 11 and the bottom plate 12 opposite to the cover plate 11. The air inlet 121 and the air outlet 111 are composed of a plurality of dense heat dissipation holes. The air inlet 121 and the air outlet 111 are communicated to form a heat dissipation air duct. The battery module 5 can be installed in the receiving cavity and placed close to the heat dissipation air duct; the first heat dissipation component 2 is also arranged in the box body 1 and is located outside the heat dissipation air duct. Preferably, the first heat dissipation component 2 is a heat dissipation structure different from air cooling. The battery module 5 can be installed in the receiving cavity and placed close to the first heat dissipation component 2. It can be understood that the heat dissipation air duct and the first heat dissipation component 2 cooperate to jointly dissipate heat from the battery module 5, improving the heat dissipation effect.

[0041] As a preferred embodiment, the structure of the heat dissipation air duct in the box body 1 is a second heat dissipation component 3. One end of the second heat dissipation component 3 is communicated with the air inlet 121, and the other end is communicated with the air outlet 111. The cover plate 11 presses the second heat dissipation component 3 onto the bottom plate 12. The battery module 5 can be placed close to the second heat dissipation component 3. Specifically, the second heat dissipation component 3 absorbs the heat of the battery module 5 and then discharges it through the air flow in the heat dissipation air duct, further improving the heat dissipation effect. Preferably, a heat dissipation fan is installed at the air inlet 121 or the air outlet 111, which can accelerate the air flow velocity and thus improve the heat dissipation speed. In other embodiments of the present invention, part of the structure of the heat dissipation air duct in the box body 1 can also be set as the second heat dissipation component 3, and part of the structure can be set as a ventilation duct, which can also play a role in improving the heat dissipation effect.

[0042] As Figure 2 and Figure 3As shown, the second heat dissipation component 3 includes a first mounting plate 31, a second mounting plate 32, a first heat dissipation tooth 33, and a second heat dissipation tooth 34. The first mounting plate 31 and the second mounting plate 32 are arranged in parallel and opposite to each other. The first heat dissipation tooth 33 and the second heat dissipation tooth 34 are arranged as tree-shaped heat dissipation teeth. T-shaped grooves 311 are formed on both the first mounting plate 31 and the second mounting plate 32. The end of the first heat dissipation tooth 33 is provided with a T-shaped plug 332, and the T-shaped plug 332 is inserted into the T-shaped groove 311 to detachably connect both ends of the first heat dissipation tooth 33 to the second mounting plate 32. The second heat dissipation tooth 34 is inserted into the middle of the first heat dissipation tooth 33 and is located between the first mounting plate 31 and the second mounting plate 32. The second heat dissipation component 3 is modularly arranged and assembled from multiple components, facilitating manufacturing and assembly. In other embodiments of the present invention, the first heat dissipation tooth 33 can also be detachably connected to the first mounting plate 31 and the second mounting plate 32 by screws.

[0043] In this embodiment, the first heat dissipation tooth 33 is arranged as an inverted Z shape. The middle of the first heat dissipation tooth 33 extends longitudinally, and the second heat dissipation tooth 34 extends transversely. The second heat dissipation tooth 34 is inserted into the middle of the first heat dissipation tooth 33, adopting a structure layout of vertical and horizontal intersections. Moreover, T-shaped plugs 332 are also provided at both ends of the second heat dissipation tooth 34, and the T-shaped plugs 332 can be inserted into the T-shaped grooves 311 to detachably connect both ends of the second heat dissipation tooth 34 to the first mounting plate 31 and the second mounting plate 32, improving the structural strength.

[0044] Specifically, a first slot 331 is formed in the middle of the first heat dissipation tooth 33, and a second slot 341 corresponding to the first slot 331 one by one is formed in the second heat dissipation tooth 34. The first heat dissipation tooth 33 and the second heat dissipation tooth 34 are inserted into each other through the first slot 331 and the second slot 341. After the first heat dissipation tooth 33 and the second heat dissipation tooth 34 are inserted into each other, the first heat dissipation tooth 33 is snapped into the second slot 341, and the second heat dissipation tooth 34 is snapped into the first slot 331. The two sides of the first heat dissipation tooth 33 and the second heat dissipation tooth 34 are aligned, and the structure is compact. In other embodiments of the present invention, the insertion slot can also be formed only on one of the first heat dissipation tooth 33 and the second heat dissipation tooth 34, and the other can be inserted into the insertion slot to connect the first heat dissipation tooth 33 and the second heat dissipation tooth 34.

[0045] As Figure 1 and Figure 4 shown, the first heat dissipation component 2 is arranged as a water-cooling component. The water-cooling component includes a first water pipe layer 21 and a second water pipe layer 22 arranged in a stacked manner. The first water pipe layer 21 and the second water pipe layer 22 are arranged in sequence along the direction away from the battery module 5. The first water pipe layer 21 absorbs the heat of the battery module 5 and takes out a part of the heat from the box body 1, and transfers the other part of the heat to the second water pipe layer 22, realizing the secondary heat dissipation of the battery module 5 and improving the heat dissipation effect.

[0046] Specifically, the first water pipe layer 21 is arranged as a water pipe, specifically a copper water pipe. An S-shaped groove is machined on the bottom plate 12 by numerical control. The copper water pipe is press-fitted into the groove of the bottom plate 12 by hydraulic pressure and fixed with glue. Since copper has a high thermal conductivity, it can quickly absorb the heat of the battery module 5 and take the heat out of the box body 1 through the cooling water. The water channels of the second water pipe layer 22 (not shown in the figure) are integrally formed with the box body 1. Specifically, it can be formed by die-casting or aluminum extrusion. That is, the water channels of the second water pipe layer 22 are opened in the bottom plate 12 of the box body 1, and the water channels of the second water pipe layer 22 are connected by pipelines externally connected to the side walls. The inlets and outlets of the first water pipe layer 21 and the second water pipe layer 22 are both opened on the front panel 13, and the structure is compact. In this embodiment, the first water pipe layer 21 and the second water pipe layer 22 only transfer heat through the middle bottom plate 12 and are not directly connected.

[0047] As a preferred implementation manner, the first heat dissipation component 2 is located at the end of the heat dissipation air duct. The first heat dissipation component 2 is arranged on the bottom plate 12. The air inlet 121 of the heat dissipation air duct is also opened on the bottom plate 12, and the heat dissipation air duct extends in the vertical direction. Using the principle of heat rising, the heat dissipation air duct can accelerate the heat dissipation speed of the heat absorbed by the first heat dissipation component 2, further improving the heat dissipation effect.

[0048] In this embodiment, the heat dissipation device further includes a heat conducting member 4. The heat conducting member 4 can be arranged as a heat conducting gel or a heat conducting sheet with a high heat conductivity. The heat conducting member 4 is arranged between the heat dissipation air duct and the first heat dissipation component 2 and the battery module 5. The battery module 5 abuts against the heat dissipation air duct and the first heat dissipation component 2 through the heat conducting member 4, improving the heat dissipation effect.

[0049] This embodiment also provides a battery pack, which includes a battery module 5 and the above heat dissipation device. The heat dissipation air duct extends in the vertical direction. Two battery modules 5 clamp the heat dissipation air duct, and the bottom of the battery module 5 abuts against the first heat dissipation component 2 at the air inlet 121 of the heat dissipation air duct. The front and rear ends of the battery module 5 are connected to the bottom plate 12 by screws. Among them, the heat dissipation device has a good heat dissipation effect, thereby increasing the service life of the battery module 5.

[0050] In the description herein, it should be understood that the orientation or positional relationship terms such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, 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, so it cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0051] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0052] In addition, the above are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A heat dissipation device for dissipating heat from a battery module (5), characterized in that, it includes: A box body (1), with an air inlet (121) and an air outlet (111) respectively opened at both ends of the box body (1). The box body (1) includes a cover plate (11), a bottom plate (12) and a front panel (13). The cover plate (11), the bottom plate (12) and the front panel (13) are connected to each other and enclose a receiving cavity. The air outlet (111) and the air inlet (121) are respectively opened on the cover plate (11) and the bottom plate (12) opposite to the cover plate (11). The air inlet (121) and the air outlet (111) are communicated to form a heat dissipation air duct, and the heat dissipation air duct extends in the vertical direction. The battery module (5) can be installed close to the heat dissipation air duct; A first heat dissipation component (2), arranged in the box body (1) and located outside the heat dissipation air duct. The battery module (5) can be installed close to the first heat dissipation component (2) so that the first heat dissipation component (2) can dissipate heat from the battery module (5); At least part of the heat dissipation air duct is provided with a second heat dissipation component (3). The second heat dissipation component (3) communicates the air inlet (121) with the air outlet (111), and the second heat dissipation component (3) can dissipate heat from the battery module (5); The second heat dissipation component (3) includes: A first mounting plate (31); A second mounting plate (32), arranged opposite to the first mounting plate (31); A first heat dissipation tooth (33), with one end detachably connected to the first mounting plate (31) and the other end detachably connected to the second mounting plate (32); A second heat dissipation tooth (34), inserted into the first heat dissipation tooth (33) and located between the first mounting plate (31) and the second mounting plate (32); The first heat dissipation tooth (33) is arranged in an inverted Z shape, the second heat dissipation tooth (34) is inserted into the middle of the first heat dissipation tooth (33), and both ends of the second heat dissipation tooth (34) are respectively detachably connected to the first mounting plate (31) and the second mounting plate (32).

2. The heat dissipation device according to claim 1, characterized in that, The first heat dissipation tooth (33) is provided with a first slot (331), and the second heat dissipation tooth (34) is provided with a second slot (341). The first heat dissipation tooth (33) and the second heat dissipation tooth (34) are inserted into each other so that the first slot (331) is clamped to the second heat dissipation tooth (34), and the second slot (341) is clamped to the first heat dissipation tooth (33).

3. The heat dissipation device according to claim 1, characterized in that, The first heat dissipation component (2) is set as a water cooling component, and the water cooling component includes a first water pipe layer (21) and a second water pipe layer (22) arranged in a stacked manner.

4. The heat dissipation device according to claim 3, characterized in that, The water channel of the second water pipe layer (22) is integrally formed with the box body (1), and the water channel of the second water pipe layer (22) is opened in the box body (1).

5. The heat dissipation device according to claim 1, wherein, the first heat dissipation component (2) is located at the end of the heat dissipation air duct.

6. The heat dissipation device according to claim 1, wherein, it further includes a heat conducting member (4), the heat conducting member (4) is disposed on the side walls of the heat dissipation air duct and the first heat dissipation component (2), and the battery module (5) can be in contact with the heat dissipation air duct and the first heat dissipation component (2) through the heat conducting member (4).

7. A battery pack, wherein, it includes a battery module (5) and the heat dissipation device according to any one of claims 1-6, the heat dissipation air duct is clamped between two adjacent battery modules (5), and the bottom of the battery module (5) is in contact with the first heat dissipation component (2).

Images