Liquid cooling plate for power battery

Abstract

The utility model relates to the technical field of power batteries, and particularly discloses a liquid cooling plate for a power battery, which comprises a liquid cooling plate upper plate and a liquid cooling plate lower plate arranged at the bottom of the liquid cooling plate upper plate, protection mechanisms are arranged on the outer side of the liquid cooling plate upper plate and the outer side of the liquid cooling plate lower plate, and a flowing mechanism is arranged on the top of the liquid cooling plate upper plate. The liquid cooling plate upper plate and the liquid cooling plate lower plate are provided with screw holes which are symmetrically distributed. According to the utility model, the two cooling runners which are symmetrically distributed are arranged and respectively correspond to the battery placement marks above, so that when the power battery is used, the cooling runners can be in contact with the bottom of the power battery in a large area, the heat exchange efficiency of the power battery is effectively improved, and the service life of the power battery is prolonged. And in addition, the outer side of the liquid cooling plate is protected under the action of the protection strips, so that the phenomenon that the liquid cooling plate is damaged in the mounting and dismounting processes is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of power batteries, and in particular relates to a liquid cooling plate for a power battery. Background Art

[0002] Power batteries are the power source for tools, mostly referring to the batteries that power electric vehicles, electric trains, electric bicycles, and golf carts. Power batteries are the core components of new energy vehicles and an important direction for future energy transformation. In order to ensure the continuous use of power batteries, they are usually cooled by liquid cooling plates to avoid accidents caused by overheating of the power batteries.

[0003] In the prior art, the coolant of the liquid cooling plate for power battery pack is located in a single flow channel when in use. During the heat exchange process with the power battery, the contact range between the coolant in the flow channel and the power battery is small, resulting in poor heat dissipation effect on the power battery. In addition, the edge of the liquid cooling plate lacks protection, which can easily cause protrusion damage to the edge during installation or disassembly, affecting the service life of the liquid cooling plate. For this reason, we propose a liquid cooling plate for power battery. Utility Model Content

[0004] The utility model aims to provide a liquid cooling plate for a power battery, so as to solve the problems in the prior art that the contact range between the coolant in the flow channel and the power battery is small, resulting in poor heat dissipation effect on the power battery; and the edge of the liquid cooling plate lacks protection, which easily causes protrusion damage to the edge.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A liquid cooling plate for a power battery comprises an upper plate of the liquid cooling plate and a lower plate of the liquid cooling plate arranged at the bottom of the upper plate of the liquid cooling plate, the outer sides of the upper plate of the liquid cooling plate and the outer sides of the lower plate of the liquid cooling plate are both provided with protective mechanisms, the top of the upper plate of the liquid cooling plate is provided with a flow mechanism, and the upper plate of the liquid cooling plate and the lower plate of the liquid cooling plate are provided with symmetrically distributed screw holes.

[0007] The flow mechanism includes a water inlet pipe and a water outlet pipe fixedly connected to the upper plate of the liquid cooling plate, the bottom of the upper plate of the liquid cooling plate and the top of the lower plate of the liquid cooling plate are provided with symmetrically distributed flow channels, and the top of the upper plate of the liquid cooling plate is provided with a battery placement mark;

[0008] The flow channel includes a cooling flow channel, a connecting flow channel and a converging flow channel. Two cooling flow channels are provided. The connecting flow channel is provided in the middle of the two cooling flow channels. The opposite surfaces of the two cooling flow channels are respectively connected to the left and right ends of the same connecting flow channel. Two converging flow channels are provided. The two converging flow channels are respectively connected to the side away from the two cooling flow channels. The battery placement mark is located above the cooling flow channel.

[0009] Preferably, the water inlet pipe is arranged on the right side of the water outlet pipe, and the bottom ends of the water inlet pipe and the water outlet pipe both pass through the upper plate of the liquid cooling plate and are connected to the corresponding converging flow channel.

[0010] Preferably, a guide block is fixedly connected to the inner side of the flow channel, and the guide block is arranged on the inner side of the flow channel in an inclined shape.

[0011] Preferably, the protection mechanism comprises an outer frame, two outer frames are provided, the two outer frames are respectively fixedly connected to the outer side of the upper plate of the liquid cooling plate and the outer side of the lower plate of the liquid cooling plate, and a protection strip is provided on the outer side of the outer frame.

[0012] Preferably: a rectangular groove is provided on one side of the two outer frames away from each other, the protective strip is arranged in a U shape, a raised strip is fixedly connected to the inner side of the protective strip, and the side of the raised strip away from the protective strip is located on the inner side of the corresponding groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model provides two symmetrically distributed cooling channels, and the two cooling channels correspond to the battery placement marks above respectively, so that when the power battery is in use, the cooling channels can contact the bottom of the power battery with a large area, thereby effectively improving the heat exchange efficiency of the power battery.

[0015] 2. The utility model provides a protective strip on the outer side of the liquid cooling plate to protect the edge of the liquid cooling plate. The outer side of the liquid cooling plate is protected by the protective strip, thereby avoiding damage to the liquid cooling plate during installation and disassembly, thereby increasing the service life of the liquid cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is one of the three-dimensional diagrams of the utility model;

[0017] Figure 2 This is the second stereogram of the utility model;

[0018] Figure 3 This is a schematic diagram of the bottom of the upper plate of the liquid cooling plate of the utility model;

[0019] Figure 4 It is a partial explosion schematic diagram of the upper plate of the liquid cooling plate of the utility model;

[0020] Figure 5 It is a partial cross-sectional schematic diagram of the protection strip of the utility model;

[0021] Figure 6 It is a partial cross-sectional schematic diagram of the upper corner of the liquid cooling plate of the utility model.

[0022] In the figure: 1. upper plate of liquid cooling plate; 2. protection mechanism; 201. protection strip; 202. raised strip; 203. groove; 204. outer frame; 3. flow mechanism; 301. guide block; 302. water outlet pipe; 303. cooling channel; 304. water inlet pipe; 305. battery placement mark; 306. converging channel; 307. connecting channel; 4. screw hole; 5. lower plate of liquid cooling plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 6 As shown, the utility model provides a liquid cooling plate for a power battery, comprising a liquid cooling plate upper plate 1 and a liquid cooling plate lower plate 5 arranged at the bottom of the liquid cooling plate upper plate 1, a protective mechanism 2 is arranged on the outer side of the liquid cooling plate upper plate 1 and the outer side of the liquid cooling plate lower plate 5, a flow mechanism 3 is arranged on the top of the liquid cooling plate upper plate 1, and the liquid cooling plate upper plate 1 and the liquid cooling plate lower plate 5 are provided with symmetrically distributed screw holes 4;

[0025] The flow mechanism 3 includes a water inlet pipe 304 and a water outlet pipe 302 fixedly connected to the upper plate 1 of the liquid cooling plate. The bottom of the upper plate 1 of the liquid cooling plate and the top of the lower plate 5 of the liquid cooling plate are provided with symmetrically distributed flow channels. A battery placement mark 305 is provided on the top of the upper plate 1 of the liquid cooling plate.

[0026] The flow channel includes a cooling flow channel 303 , a connecting flow channel 307 and a converging flow channel 306 .

[0027] In a further embodiment, referring to Figure 1-Figure 4 There are two cooling channels 303, a connecting channel 307 is arranged between the two cooling channels 303, and the opposite surfaces of the two cooling channels 303 are respectively connected to the left and right ends of the same connecting channel 307, and there are two converging channels 306, which are respectively connected to the sides away from the two cooling channels 303. The battery placement mark is located above the cooling channel 303, and the water inlet pipe 304 is arranged on the right side of the water outlet pipe 302. The bottom ends of the water inlet pipe 304 and the water outlet pipe 302 both penetrate the upper plate 1 of the liquid cooling plate and are connected to the corresponding converging channel 306.

[0028] In this embodiment, the coolant enters the converging channel 306 through the water inlet pipe 304, and enters the cooling channel 303 at an adjacent position through the converging channel 306 to dissipate heat for the power battery above the cooling channel 303. The coolant after heat exchange enters another cooling channel 303 through the connecting channel 307, and is finally discharged through the water outlet pipe 302 above the converging channel 306, forming a cooling cycle to accurately dissipate heat for the power battery at the battery placement mark above. At the same time, the four semi-arc settings of the cooling channel 303 can increase the contact area with the power battery and improve the heat dissipation effect.

[0029] In a further embodiment, referring to Figure 3 A guide block 301 is fixedly connected to the inner side of the flow channel, and the guide block 301 is arranged on the inner side of the flow channel in an inclined shape.

[0030] In this embodiment, under the action of the guide block 301, the coolant can be guided to quickly enter the corresponding flow channel, thereby avoiding the phenomenon of uneven distribution of coolant in the flow channel, ensuring that the amount of coolant in each flow channel is roughly the same and no backflow occurs.

[0031] In a further embodiment, referring to Figure 1-Figure 2 and Figure 4 The protection mechanism 2 includes an outer frame 204 , two outer frames 204 are provided, and the two outer frames 204 are respectively fixedly connected to the outer side of the upper plate 1 of the liquid cooling plate and the outer side of the lower plate 5 of the liquid cooling plate, and a protection strip 201 is provided on the outer side of the outer frame 204 .

[0032] In this embodiment, the outer frame 204 can facilitate the installation of the protection strip 201 , and the protection strip 201 protects the liquid cooling plate from the outside to avoid damage to its edge due to external force.

[0033] In a further embodiment, referring to Figure 5-Figure 6 A rectangular groove 203 is provided on one side of the two outer frames 204 away from each other. The protective strip 201 is set in a U shape. A raised strip 202 is fixedly connected to the inner side of the protective strip 201. The side of the raised strip 202 away from the protective strip 201 is located on the inner side of the corresponding groove 203.

[0034] In this embodiment, the groove 203 facilitates the entry of the raised strip 202 and limits the entry into the raised strip 202, ensuring the stability of the protective strip 201 after installation, and preventing it from automatically falling off under the action of external force, thereby continuously protecting the liquid cooling plate.

[0035] The working principle of the utility model is as follows: after the liquid cooling plate is installed in an appropriate position through the screw holes 4, the power battery is installed at the battery placement mark on the upper plate 1 of the liquid cooling plate, and the coolant enters the right converging flow channel 306 through the water inlet pipe 304 of the liquid cooling system, and is divided into two branches through the converging flow channel 306 and enters the cooling flow channel 303, and then enters another cooling flow channel 303 through the connecting flow channel 307, and finally is discharged through the water outlet pipe 302 above the left converging flow channel 306, and the cooling flow channel 303 dissipates heat to the power battery above;

[0036] Before installing the liquid cooling plate, press the protection strip 201 into the outer side of the outer frame 204 until the protruding strip 202 enters the corresponding groove 203 and stops, completing the installation of the protection strip 201. The protection strip 201 protects the liquid cooling plate from the edge.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid cooling plate for a power battery, comprising a liquid cooling plate upper plate (1) and a liquid cooling plate lower plate (5) arranged at the bottom of the liquid cooling plate upper plate (1), characterized in that: The outer sides of the upper plate (1) of the liquid cooling plate and the outer sides of the lower plate (5) of the liquid cooling plate are both provided with protection mechanisms (2), the top of the upper plate (1) of the liquid cooling plate is provided with a flow mechanism (3), and the upper plate (1) of the liquid cooling plate and the lower plate (5) of the liquid cooling plate are provided with symmetrically distributed screw holes (4); The flow mechanism (3) comprises a water inlet pipe (304) and a water outlet pipe (302) fixedly connected to the upper plate (1) of the liquid cooling plate, the bottom of the upper plate (1) of the liquid cooling plate and the top of the lower plate (5) of the liquid cooling plate are provided with symmetrically distributed flow channels, and the top of the upper plate (1) of the liquid cooling plate is provided with a battery placement mark (305); The flow channel comprises a cooling flow channel (303), a connecting flow channel (307) and a converging flow channel (306); two cooling flow channels (303) are provided, the connecting flow channel (307) is provided between the two cooling flow channels (303), the opposite surfaces of the two cooling flow channels (303) are respectively connected to the left and right ends of the same connecting flow channel (307); two converging flow channels (306) are provided, the two converging flow channels (306) are respectively connected to the side away from the two cooling flow channels (303), and the battery placement mark is located above the cooling flow channel (303).

2. A liquid cooling plate for a power battery according to claim 1, characterized in that: The water inlet pipe (304) is arranged on the right side of the water outlet pipe (302), and the bottom ends of the water inlet pipe (304) and the water outlet pipe (302) both pass through the upper plate (1) of the liquid cooling plate and are connected to the corresponding converging flow channel (306).

3. A liquid cooling plate for a power battery according to claim 1, characterized in that: A guide block (301) is fixedly connected to the inner side of the flow channel, and the guide block (301) is arranged in an inclined shape on the inner side of the flow channel.

4. A liquid cooling plate for a power battery according to claim 1, characterized in that: The protective mechanism (2) comprises an outer frame (204), two outer frames (204) are provided, the two outer frames (204) are respectively fixedly connected to the outer side of the upper plate (1) of the liquid cooling plate and the outer side of the lower plate (5) of the liquid cooling plate, and a protective strip (201) is provided on the outer side of the outer frame (204).

5. A liquid cooling plate for a power battery according to claim 4, characterized in that: A rectangular groove (203) is provided on one side of the two outer frames (204) away from each other, the protective strip (201) is arranged in a U shape, a raised strip (202) is fixedly connected to the inner side of the protective strip (201), and the side of the raised strip (202) away from the protective strip (201) is located on the inner side of the corresponding groove (203).

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