Heat exchange device and battery PACK

Abstract

The utility model belongs to the technical field of batteries, and discloses a heat exchange device and a battery PACK. The heat exchange device comprises a heat exchange plate and a connecting assembly, the heat exchange plate is provided with a second liquid nozzle, the connecting assembly comprises a transition plate, a first connecting piece and a second connecting piece, one end of one side of the transition plate is connected to the first liquid nozzle through the first connecting piece, the other end of one side of the transition plate is connected to the second liquid nozzle through the second connecting piece, and the transition plate is provided with a liquid passing channel. The first connecting piece is communicated with the second connecting piece through the liquid passing channel. According to the mode, the transition plate is used for replacing a pipe opening nozzle located at the first liquid nozzle, and compared with the mode that the installation height of a pipeline needs to be increased to enable the first liquid nozzle and the second liquid nozzle to be connected in the prior art, the height space needed when the first liquid nozzle and the second liquid nozzle are communicated can be reduced; and the installation requirement of the heat exchange device in a limited height space is met. By arranging the heat exchange device in the battery PACK, the installation convenience of the battery PACK can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a heat exchange device and a battery PACK. Background Art

[0002] More and more transportation vehicles are starting to adopt energy-saving and clean energy electric drive technologies. Among them, lithium-ion batteries, as the core power source, have been widely used, and the heat dissipation of batteries has gradually become one of the key issues that need to be considered.

[0003] Currently, a heat exchange device is often installed in the battery PACK. The heat exchange device can enable the battery to work within the optimal temperature range. The inlet / outlet of the heat exchange device is connected to the inlet / outlet of the whole vehicle through pipelines. When the outlet of the heat exchange device and the inlet of the whole vehicle are both arranged upward, both ends of the pipeline need to be connected to the outlet of the heat exchange device and the inlet of the whole vehicle respectively through pipe nozzles, which results in a relatively high height space occupied by the pipeline. However, in actual situations, the height space between the battery PACK and the whole vehicle is usually small, thus making it difficult for the pipeline to meet the spatial layout requirements.

[0004] Based on the above, there is an urgent need for a heat exchange device and a battery PACK to solve the problems existing in the prior art. Summary of the Utility Model

[0005] An object of the utility model is to provide a heat exchange device, which can realize the layout and installation of the heat exchange device in a narrow height space and reduce the installation difficulty.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A heat exchange device capable of cooling or heating a vehicle, the vehicle having a first nozzle, the heat exchange device including a heat exchange plate and a connection assembly. The heat exchange plate has a second nozzle. The connection assembly includes a transition plate, a first connecting member, and a second connecting member. One end of the transition plate is connected to the first nozzle through the first connecting member, and the other end of the transition plate is connected to the second nozzle through the second connecting member. The transition plate has a liquid passing channel inside, and the first connecting member is communicated with the second connecting member through the liquid passing channel.

[0008] Preferably, one liquid passing hole is provided at each of the two ends of the larger area surface of the transition plate, the liquid passing hole is communicated with the liquid passing channel, the first connecting member is connected to one of the liquid passing holes, and the second connecting member is connected to the other liquid passing hole.

[0009] Preferably, a plurality of partition plates are arranged side by side and at intervals in the liquid passing channel, so that the liquid passing channel in the middle part between the first connecting piece and the second connecting piece forms a plurality of shunt liquid paths with uniform flow channels.

[0010] Preferably, the first connecting piece adopts a quick-connect joint, the quick-connect joint includes a quick-connect male joint and a quick-connect female joint, one end of the quick-connect male joint is connected to the transition plate, one end of the quick-connect female joint is connected to the first liquid nozzle, and the other end of the quick-connect male joint is limited and inserted into the other end of the quick-connect female joint.

[0011] Preferably, the quick-connect joint further includes a fixing piece, the quick-connect male joint has a through hole, the quick-connect female joint has a plugging hole, and the fixing piece passes through the through hole and is connected to the plugging hole.

[0012] Preferably, the length dimension range of the liquid passing channel is 20 - 80 mm.

[0013] Preferably, on the projection plane of the heat exchange plate and along the horizontal direction perpendicular to the length direction of the liquid passing channel, the width dimension of the liquid passing channel is 3 - 4 mm.

[0014] Preferably, the transition plate adopts an extrusion molding structure.

[0015] Preferably, plugging heads are respectively arranged at both ends of the transition plate.

[0016] Another object of the present invention is to provide a battery PACK, which can reduce the installation space requirements, reduce the installation difficulty, and improve the assembly convenience.

[0017] To achieve this purpose, the present invention adopts the following technical solutions:

[0018] The battery PACK is located in a vehicle, and the battery PACK includes a battery module and the above heat exchange device, and the heat exchange device is heat transfer connected to the battery module.

[0019] The beneficial effects of the present invention:

[0020] The present utility model provides a heat exchange device that can be applied to a vehicle. The heat exchange device includes a connection assembly, which includes a transition plate, a first connector, and a second connector. One end of one side of the transition plate is connected to a first liquid nozzle through the first connector, and the other end of one side of the transition plate is connected to a second liquid nozzle through the second connector. And a liquid passage is provided in the transition plate so that the first liquid nozzle and the second liquid nozzle can be communicated on the same side of the transition plate. The above method uses a transition plate to replace the pipe nozzle at the first liquid nozzle. Compared with the prior art method that requires raising the installation height of the pipeline to connect the first liquid nozzle and the second liquid nozzle, the height space required for the connection of the first liquid nozzle and the second liquid nozzle can be reduced, meeting the installation requirements of the heat exchange device in a limited height space.

[0021] The present utility model also provides a battery PACK located on a vehicle. The battery PACK includes the above heat exchange device. In this battery PACK, the second liquid nozzle on the heat exchange device is connected to the first liquid nozzle of the whole vehicle through a transition plate, and the first liquid nozzle and the second liquid nozzle are communicated on the same side of the transition plate. The above method uses a transition plate to replace the pipe nozzle at the first liquid nozzle. Compared with the prior art method that requires raising the installation height of the pipeline to connect the first liquid nozzle and the second liquid nozzle, the height space required for the connection of the second liquid nozzle and the first liquid nozzle can be effectively reduced, so that the heat exchange device can be arranged in a narrow height space, thereby improving the installation convenience of the battery PACK and reducing the installation requirements. Description of the Drawings

[0022] Figure 1 is a schematic diagram showing the difference between the connection assembly provided by the present utility model and the connection method used in the prior art in actual application;

[0023] Figure 2 is a schematic assembly structure diagram between the heat exchange plate and the box cover provided by the present utility model;

[0024] Figure 3 is a front view of the assembly between the heat exchange plate and the box cover provided by the present utility model;

[0025] Figure 4 is an assembly drawing between the heat exchange plate and the connection assembly provided by the present utility model;

[0026] Figure 5 is a schematic structure diagram of the transition plate provided by the present utility model;

[0027] Figure 6 is a cross-sectional view of the transition plate provided by the present utility model from a first perspective;

[0028] Figure 7 is a cross-sectional view of the transition plate provided by the present utility model from a second perspective.

[0029] In the figure:

[0030] 10’, pipeline; 20’, pipe nozzle;

[0031] 100, box cover; 101, first liquid inlet; 102, first liquid outlet;

[0032] 1, heat exchange plate; 111, second liquid inlet; 112, second liquid outlet;

[0033] 2, connection assembly; 21, transition plate; 211, liquid passage; 2111, shunt liquid path; 212, liquid passing hole; 213, partition board; 214, plug; 22, first connecting piece; 23, second connecting piece. Specific embodiments

[0034] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0035] In the description of the present utility model, 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 or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] In the present utility model, unless otherwise clearly defined and limited, 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 between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0037] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operations, 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] The technical solution provided by the present utility model will be introduced below in conjunction with the drawings and specific embodiments.

[0039] Refer to Figure 1 As shown, in the prior art, a battery PACK is assembled in a vehicle, and the battery PACK is used to provide electrical energy power for the vehicle to run. The battery PACK includes a battery module, a heat exchange device, a box cover 100 and other related components. The heat exchange device is heat-transfer connected to the battery module. The heat exchange device can cool the single cells in the battery module to absorb the heat generated during the charge and discharge operation of the single cells, so that the single cells can work in a suitable environment. A first nozzle for circularly connecting the cooling system in the vehicle and the heat exchange device is provided on the box cover 100, and a second nozzle is provided on the heat exchange device, so that the heat exchange medium can circulate between the cooling system and the heat exchange device through the first nozzle and the second nozzle. The cooling system can absorb the heat in the high-temperature heat exchange medium to form a low-temperature heat exchange medium, and the low-temperature heat exchange medium then flows to the heat exchange device to continuously cool the battery.

[0040] Specifically, taking Figure 1 the connection schematic diagram between the water outlet of the heat exchange device located on the left side and the water inlet of the whole vehicle as an example, when both the water outlet of the heat exchange device and the water inlet of the whole vehicle are arranged upward, it is necessary to raise the height of the pipeline 10' so that one end of the pipeline 10' can be aligned and snap-connected to the nozzle 20' located on the first nozzle. This results in a relatively high height space occupied by the pipeline 10'. However, in actual situations, the height space between the battery PACK and the inner wall of the whole vehicle is usually small, which makes it difficult for the pipeline 10' to meet the spatial layout requirements.

[0041] Combined with Figures 2 to 7As shown in the figure, this embodiment provides a heat exchange device applied to a vehicle. The heat exchange device includes a heat exchange plate 1. The first liquid nozzle includes a first liquid inlet 101 and a first liquid outlet 102. The first liquid inlet 101 and the first liquid outlet 102 are arranged on the cover 100 of the battery PACK. The heat exchange plate 1 has a second liquid nozzle. The second liquid nozzle includes a second liquid inlet 111 and a second liquid outlet 112. The first liquid inlet 101 is connected to the second liquid outlet 112, and the first liquid outlet 102 is connected to the second liquid inlet 111, so that a heat exchange medium (such as water) can circulate between the vehicle and the heat exchange plate 1 through the connected first liquid nozzle and second liquid nozzle.

[0042] In addition, the heat exchange device further includes a connection assembly 2. There are two connection assemblies 2 provided in this embodiment. One connection assembly 2 is used to connect the first liquid outlet 102 and the second liquid inlet 111, and the other connection assembly 2 is used to connect the second liquid outlet 112 and the first liquid inlet 101. The structures of the two connection assemblies 2 are the same. For the convenience of description, one of the connection assemblies 2 will be taken as an example for specific introduction below.

[0043] Refer to Figure 2 As shown in the figure, the connection assembly 2 specifically includes a transition plate 21, a first connecting piece 22 and a second connecting piece 23. One end of one side of the transition plate 21 is connected to the first liquid outlet 102 through the first connecting piece 22, and the other end of one side of the transition plate 21 is connected to the second liquid inlet 111 through the second connecting piece 23. And there is a liquid passing channel 211 in the transition plate 21, so that the first connecting piece 22 is communicated with the second connecting piece 23 through the liquid passing channel 211.

[0044] In this embodiment, in combination with Figure 1 , Figure 5 , Figure 6 As shown in the figure, the transition plate 21 is rectangular in structure, and a liquid passing hole 212 is respectively opened at both ends of the larger bottom surface. Both liquid passing holes 212 are communicated with the liquid passing channel 211. The first connecting piece 22 is connected to the first liquid outlet 102 and one of the liquid passing holes 212, and the second connecting piece 23 is connected to the second liquid inlet 111 and the other liquid passing hole 212, so as to realize the stable installation of the first connecting piece 22 and the second connecting piece 23 on the transition plate 21, and effectively ensure the flow rate of the heat exchange medium. Through the above settings, when the openings of the second liquid nozzle and the first liquid nozzle of the whole vehicle of the heat exchange device are both upward, the connection between the second liquid nozzle and the first liquid nozzle can be realized by connecting the first connecting piece 22 and the second connecting piece 23 on the same side of the transition plate 21. By using the transition plate 21 to replace the pipe nozzle 20' at the first liquid nozzle, the height space required for the connection of the first liquid nozzle and the second liquid nozzle can be reduced, so as to meet the installation requirements of the heat exchange device in a limited height space, and effectively improve the installation convenience of the heat exchange device.

[0045] It should be added that in other embodiments, the length of the transition plate 21 can be extended so that the liquid passing holes 212 of the transition plate 21 can be directly opposite to the second liquid inlet 111. At this time, a second connecting member 23 in a straight cylinder structure can be used to dock the second liquid inlet 111 and the transition plate 21. The straight cylinder-shaped second connecting member 23 has a more stable structure, and can further reduce the extension length of the second connecting member 23, thereby further reducing the risk of liquid leakage caused by pipeline bending deformation and support failure. Moreover, the straight cylinder-shaped pipe fittings are simpler and more compact during installation, do not require additional extension space, reduce the complexity and cost of installation, and also save installation space.

[0046] Furthermore, the length of the liquid passing channel 211 changes with the change of the length of the transition plate 21, and the length dimension range of the liquid passing channel 211 is 20-80 mm. For example, in this embodiment, the length dimension m of the liquid passing channel 211 is 30 mm to meet the use requirements in a specific environment. Of course, in other embodiments, the length dimension of the liquid passing channel 211 can also be 20 mm, 40 mm, 50 mm, 60 mm, 70 mm or 80 mm, and the present utility model does not limit this.

[0047] Still further, as Figure 7 shown, a plurality of partition plates 213 are also arranged side by side and at intervals in the liquid passing channel 211 to divide the liquid passing channel 211 in the middle part between the first connecting member 22 and the second connecting member 23 into a plurality of shunt liquid paths 2111 with uniform flow paths, so that the flow rate of the heat exchange medium entering the heat exchange plate 1 is more uniform, which is beneficial to the control of pressure drop and temperature difference, and can also play a role in supporting the transition plate 21 to prevent the middle part of the transition plate 21 from collapsing when the length is too long.

[0048] Even further, on the projection plane of the heat exchange plate 1 and along the horizontal direction perpendicular to the length direction of the liquid passing channel 211, the width dimension of the liquid passing channel 211 is 3-4 mm. For example, in this embodiment, continuing to refer to Figure 5 shown, the width dimension n of the liquid passing channel 211 is 3 mm. Of course, in other embodiments, the width dimension of the liquid passing channel 211 can also be 3.5 mm or 4 mm. If the width dimension of the liquid passing channel 211 is less than 3 mm, the flow cross-sectional area of the liquid passing channel 211 will be smaller, and the flow resistance of the heat exchange medium will become larger, resulting in an increase in pressure loss; if the width dimension of the liquid passing channel 211 is greater than 4 mm, the flow rate of the heat exchange medium will decrease, causing the risk of difficulty in maintaining pressure uniformity.

[0049] Optionally, in this embodiment, the first connecting member 22 is a quick-connect fitting, which includes a quick-connect male fitting and a quick-connect female fitting. One end of the quick-connect male fitting is connected to the transition plate 21, and one end of the quick-connect female fitting is connected to the first liquid outlet 102. The other end of the quick-connect male fitting is limit inserted into the other end of the quick-connect female fitting. Through the quick insertion and matching of the quick-connect male fitting and the quick-connect female fitting, the transition plate 21 and the first liquid outlet 102 are quickly connected, which is convenient for disassembly and does not increase the installation space in the height direction.

[0050] Optionally, the first connecting member 22 further includes a fixing member. The quick-connect male fitting has a through hole, and the quick-connect female fitting has a socket hole. The fixing member passes through the through hole and is connected to the socket hole to prevent the quick-connect male fitting and the quick-connect female fitting from loosening and avoid the leakage of the heat exchange medium.

[0051] In this embodiment, the transition plate 21 is welded to the tank cover 100 to ensure reliable connection. The transition plate 21 is preferably made of 3-series aluminum plate, which is convenient for welding between the transition plate 21 and the tank cover 100.

[0052] Optionally, the transition plate 21 adopts an extrusion molding structure, so that the transition plate 21 can exert the maximum plastic characteristics, and thus a longer transition plate 21 can be manufactured. At this time, the staff can cut it according to the actual use requirements, thereby effectively improving the production efficiency of the transition plate 21.

[0053] Furthermore, as shown in Figures 5 to 7 both ends of the transition plate 21 are respectively provided with plugs 214 to block both ends of the extrusion-molded transition plate 21, avoid the leakage of the heat exchange medium, and improve the use safety of the transition plate 21.

[0054] This embodiment also provides a battery PACK installed in a vehicle. The battery PACK includes a tank cover 100, a battery module, and the above heat exchange device. In this heat exchange device, the transition plate can replace the pipe nozzle 20' provided at the first liquid outlet 102. Since the first connecting member 22 and the second connecting member 23 can be connected on the same side of the transition plate 21, compared with the prior art in which the installation height of the pipeline needs to be raised to dock with the pipe nozzle 20' provided at the first liquid nozzle to realize the connection between the first liquid nozzle and the second liquid nozzle, it can effectively reduce the height space required when the second liquid nozzle and the first liquid nozzle are connected, so that the heat exchange device can be arranged in a narrow height space, thereby improving the installation convenience of the battery PACK in the vehicle and reducing the installation requirements.

[0055] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A heat exchange device capable of cooling or heating a vehicle, the vehicle having a first liquid nozzle, characterized in that, The heat exchange device includes a heat exchange plate (1) and a connection assembly (2). The heat exchange plate (1) has a second liquid nozzle. The connection assembly (2) includes a transition plate (21), a first connector (22), and a second connector (23). One end of one side of the transition plate (21) is connected to the first liquid nozzle through the first connector (22), and the other end of one side of the transition plate (21) is connected to the second liquid nozzle through the second connector (23). A liquid passage (211) is provided in the transition plate (21), and the first connector (22) is communicated with the second connector (23) through the liquid passage (211).

2. The heat exchange device according to claim 1, wherein One liquid passing hole (212) is respectively provided at both ends of the surface of the transition plate (21). The liquid passing hole (212) is communicated with the liquid passage (211). The first connector (22) is connected to one of the liquid passing holes (212), and the second connector (23) is connected to the other liquid passing hole (212).

3. The heat exchange device according to claim 1, characterized in that, A plurality of partition plates (213) are arranged side by side and at intervals in the liquid passage (211), so that the liquid passage (211) in the middle part between the first connector (22) and the second connector (23) forms a plurality of shunt liquid paths (2111) with uniform flow channels.

4. The heat exchange device according to claim 1, characterized in that, The first connector (22) adopts a quick-connect joint. The quick-connect joint includes a quick-connect male joint and a quick-connect female joint. One end of the quick-connect male joint is connected to the transition plate (21), one end of the quick-connect female joint is connected to the first liquid nozzle, and the other end of the quick-connect male joint is limit-inserted into the other end of the quick-connect female joint.

5. The heat exchange device according to claim 4, characterized in that, The quick-connect joint further includes a fixing member. The quick-connect male joint has a through hole, and the quick-connect female joint has a socket hole. The fixing member passes through the through hole and is connected to the socket hole.

6. The heat exchange device according to claim 1, characterized in that, The length dimension range of the liquid passage (211) is 20 - 80 mm.

7. The heat exchange device according to claim 1, characterized in that, On the projection plane of the heat exchange plate (1), and along the horizontal direction perpendicular to the length direction of the liquid passage (211), the width dimension of the liquid passage (211) is 3 - 4 mm.

8. The heat exchange device according to any one of claims 1-7, characterized in that, The transition plate (21) adopts an extrusion molding structure.

9. The heat exchange device according to claim 8, characterized in that, Plug heads (214) are respectively arranged at both ends of the transition plate (21).

10. A battery PACK, located inside a vehicle, characterized in that, The battery PACK includes a battery module and the heat exchange device according to any one of claims 1 - 9. The heat exchange device is heat transfer-connected to the battery module.

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