Battery pack liquid cooling plate and energy storage device

Abstract

The invention relates to a battery pack liquid cooling plate and an energy storage device, the battery pack liquid cooling plate comprises a bottom plate, and the bottom plate is internally provided with a bottom plate flow channel; a first channel is arranged in the first vertical plate, and the first channel is communicated with the bottom plate flow channel; a second channel is arranged in the second vertical plate, and the second channel is communicated with the bottom plate flow channel; one side of the transverse plate is connected with the first vertical plate and the second vertical plate; the transverse plate comprises an upper runner and a lower runner; the multiple side plates are arranged on the other side of the transverse plate side by side, each side plate is provided with a side plate runner, and the side plate runners communicate with the upper runner and the lower runner correspondingly; and a space for accommodating an energy storage battery cell is formed between every two adjacent side plates. The battery cell can be subjected to comprehensive and overall heat dissipation, meanwhile, the battery cell is convenient to mount and dismount, and the angle of the energy storage battery cell can be adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular to a battery pack liquid cooling plate and an energy storage device. Background Art

[0002] A power storage device is a device used to store electrical energy. Common ones include storage batteries, such as lead-acid batteries. Its electrodes are mainly composed of lead and lead dioxide, and the electrolyte is sulfuric acid solution. Its principle is to store and release electrical energy through the chemical reaction of lead, lead dioxide and sulfuric acid. This kind of battery has a low cost and mature technology, and is often used in automotive starting power supplies and some small energy storage systems; lithium-ion batteries have a high energy density and a low self-discharge rate. Most of the batteries of electronic devices such as mobile phones and laptop computers are lithium-ion batteries, and they are also used in large-scale energy storage systems.

[0003] In the prior art, during the use of energy storage battery cells, there is energy loss, and part of the electrical energy is converted into heat, resulting in a continuous increase in the temperature of the space where the energy storage battery cells are located. Currently, the fully enclosed liquid cooling plate used in combination with an auxiliary heat dissipation device (air cooling) can only assist in cooling the enclosed outer shell. This cooling method has great limitations, the temperature reduction of the space where the energy storage battery cells are located is not obvious, and at the same time, the installation and disassembly of the energy storage battery cells are relatively inconvenient, making the maintenance more cumbersome and the use effect poor. Summary of the Invention

[0004] In order to solve the problems that the energy storage battery cells cannot be comprehensively and integrally cooled, the installation and disassembly of the energy storage battery cells are relatively inconvenient, and the installation angle of the energy storage battery cells needs to be adjusted, the present application provides a battery pack liquid cooling plate and an energy storage device.

[0005] Specifically, a battery pack liquid cooling plate includes a bottom plate, and a bottom plate flow channel is arranged inside the bottom plate. The battery pack liquid cooling plate further includes:

[0006] A first vertical plate is arranged on the bottom plate; a first channel is arranged inside the first vertical plate, and the first channel is communicated with the bottom plate flow channel;

[0007] A second vertical plate is arranged on the bottom plate and opposite to the first vertical plate; a second channel is arranged inside the second vertical plate, and the second channel is communicated with the bottom plate flow channel;

[0008] A horizontal plate is arranged on the bottom plate, and one side of the horizontal plate is connected to the first vertical plate and the second vertical plate; the horizontal plate includes an upper flow channel and a lower flow channel, the upper flow channel is communicated with the first channel, and the lower flow channel is communicated with the second channel; and

[0009] A plurality of side plates, the plurality of side plates are arranged side by side on the other side of the cross plate, and each side plate is provided with a side plate flow channel, and the side plate flow channels are respectively communicated with the upper flow channel and the lower flow channel; a space for accommodating energy storage battery cells is formed between two adjacent side plates.

[0010] As a preferred solution, it further includes:

[0011] An inflow joint is provided on the first vertical plate, and the inflow joint is connected to the first channel; an outflow joint is provided on the second vertical plate, and the outflow joint is connected to the second channel.

[0012] As a preferred solution, the side plate flow channel is arranged along the length direction of the side plate and has a U-shaped structure; both ends of the U-shaped structure are respectively connected to the upper flow channel and the lower flow channel.

[0013] As a preferred solution, it further includes:

[0014] A battery cell fixing member is provided on the side of the side plate away from the cross plate for fixing the battery cell.

[0015] As a preferred solution, the battery cell fixing member is provided with a convex head for pressing against the heat insulation pad to fix the battery cell.

[0016] As a preferred solution, it further includes:

[0017] An anti-tilting mechanism is provided below the bottom plate for adjusting the angle of the bottom plate.

[0018] As a preferred solution, the anti-tilting mechanism includes two symmetrically arranged fixed seats, sliding rails are provided on both fixed seats, and sliding members are slidably connected in both sliding rails; racks are respectively fixedly connected to both sliding members; first circular holes are provided on both fixed seats, and the same rotating rod is movably connected in both first circular holes; one end of the rotating rod is fixedly connected with an adjusting member, and two toothed rings are fixedly connected to the outer wall of the rotating rod, and the two toothed rings are meshed with the corresponding racks.

[0019] As a preferred solution, the anti-tilting mechanism further includes two symmetrically arranged connecting seats, and both connecting seats are movably connected to the corresponding fixed seats; second circular holes are provided on both sliding members, pins are fixed in both second circular holes, and support rods are respectively movably connected to both pins, and one end of both support rods away from the sliding members is movably connected to the corresponding connecting seat.

[0020] In addition, the present application further provides an energy storage device, including:

[0021] The battery pack liquid cooling plate as described above;

[0022] The energy storage cell is arranged in the space formed between the two side plates; and

[0023] A housing surrounds the battery pack liquid cooling plate.

[0024] As a preferred solution, the multiple energy storage cells are arranged between the corresponding two side plates, and thermal insulation pads are arranged between the multiple energy storage cells; multiple electrode connectors are arranged above the multiple energy storage cells and the electrode connectors are connected to the positive and negative poles of two adjacent energy storage cells.

[0025] Compared with the prior art, this application has the following beneficial effects:

[0026] By providing a bottom plate, a vertical plate, a horizontal plate and a side plate, and conveying the coolant through the flow channels in the bottom plate, the vertical plate, the horizontal plate and the side plates, after the energy storage device has worked for a long time, the coolant is injected through the inlet joint, enters the bottom plate flow channel and the side plate flow channel through the bottom plate inlet and the inlet channel respectively for circulation, and then flows out through the outflow joint. The circulation can dissipate the heat of the energy storage cell as a whole to reduce its temperature, and enable the upper part of the energy storage cell with a relatively higher working temperature to obtain a better heat exchange effect.

[0027] The battery cell fixing parts can make the installation and removal of the energy storage battery cell more convenient, and have strong maintainability. In addition, the side plates and the bottom plate are in contact with the two side surfaces and the bottom surface of the energy storage battery cell respectively, which increases the heat exchange area of ​​the energy storage battery cell, is conducive to further reducing the working temperature of the energy storage battery cell, and has a better use effect.

[0028] By providing an anti-tilt module, when the device is placed in an uneven working environment, the adjusting part is used to twist the rotating rod, and the toothed ring is engaged to drive the rack and the sliding part to move, pushing the support rod, forcing the support plate to drive the energy storage device to change the angle to maintain horizontality, thereby preventing long-term tilting from causing adverse effects on the operation of the battery cell. At the same time, maintaining the horizontality can ensure the smooth flow of the coolant and improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] The structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the implementation conditions of this application. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in this application.

[0031] Figure 1 It is a schematic structural diagram of a liquid cooling plate of a battery pack proposed by this application;

[0032] Figure 2 It is a cross-sectional view of the internal flow channel structure of a liquid cooling plate of a battery pack proposed by this application;

[0033] Figure 3 It is a schematic overall structure diagram of an energy storage device proposed by this application;

[0034] Figure 4 It is a schematic internal structure diagram of an energy storage device proposed by this application;

[0035] Figure 5 It is a partial schematic diagram of a battery cell fixing member proposed by this application;

[0036] Figure 6 It is a schematic structural diagram of an anti-tilting mechanism of an energy storage device proposed by this application; Detailed implementation manners

[0037] In order to enable those in the technical field of this application to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application.

[0038] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device, element, module, system, platform or device referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to this application. The following description of this application is only understood as a description of individual embodiments of the technical solution of this application. Other embodiments are not reflected in the following description, but this does not mean that this application excludes these other embodiments. The technical solution of this application is not limited to the specific implementation manners described below, and the protection scope of this application is not limited to only the specific implementation manners described below. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0039] It should be noted that if terms such as "first" and "second" appear in the description, claims, and the above-mentioned drawings of this application, such descriptions are only used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a system, product, or device comprising a series of units, modules, or components does not necessarily have to be limited to those units, modules, or components clearly listed, but may include other components inherent to these systems, products, or devices that are not clearly listed.

[0040] The technical solution of this application will be further described below with reference to the drawings and through specific embodiments.

[0041] In some embodiments, as Figure 1-6 shown, this application provides a battery pack liquid cooling plate 4 and an energy storage device including the battery pack liquid cooling plate. The battery pack liquid cooling plate 4 includes a bottom plate 401, and a bottom plate flow channel 410 is provided inside the bottom plate 401.

[0042] The battery pack liquid cooling plate 4 further includes a first vertical plate 41, a second vertical plate 42, a cross plate 43, and a plurality of side plates 407.

[0043] The first vertical plate 41 is provided on the bottom plate 401; a first channel 411 is provided inside the first vertical plate 41, and the first channel 411 communicates with the bottom plate flow channel 410.

[0044] The second vertical plate 42 is provided on the bottom plate 401 and is opposite to the first vertical plate 41; a second channel (not shown in the figure) is provided inside the second vertical plate 42, and the second channel communicates with the bottom plate flow channel 410.

[0045] The cross plate 43 is provided on the bottom plate 401 and one side of the cross plate 43 is connected to the first vertical plate 41 and the second vertical plate 42; the cross plate 43 includes an upper flow channel 405 and a lower flow channel 404, the upper flow channel 405 communicates with the first channel 411, and the lower flow channel 404 communicates with the second channel.

[0046] A plurality of side plates 407 are arranged side by side on the other side of the cross plate 43, and each side plate 407 is provided with a side plate flow channel 406, and the side plate flow channels 406 communicate with the upper flow channel 405 and the lower flow channel 404 respectively; a space for accommodating the energy storage battery cells 201 is formed between two adjacent side plates 407. The plurality of side plates 407 can be welded to the top of the bottom plate 401 at equal distances.

[0047] In some embodiments, an inflow joint 403 is provided on the first vertical plate 41, and the inflow joint 403 is connected to the first channel 411; an outflow joint 402 is provided on the second vertical plate 42, and the outflow joint 402 is connected to the second channel. A bottom plate inflow port 408 and a bottom plate outflow port 409 are provided on the bottom plate 401, and the bottom plate inflow port 408 and the bottom plate outflow port 409 are respectively communicated with the first channel 411 and the second channel.

[0048] In some embodiments, the side plate flow channel 406 is arranged along the length direction of the side plate 407 and has a U-shaped structure; both ends of the U-shaped structure are respectively connected to the upper flow channel 405 and the lower flow channel 404.

[0049] In some embodiments, the battery pack liquid cooling plate 4 may further include a battery cell fixing member 204, as Figure 4-5 shown, the battery cell fixing member 204 is arranged on the side of the side plate 407 away from the cross plate 43, and the battery cell fixing member 204 is used for fixing the battery cell. A convex head 2041 is provided on the battery cell fixing member 204, and the convex head 2041 is used for pressing against the heat insulation pad 202 to fix the battery cell 201.

[0050] In some embodiments, the battery pack liquid cooling plate 4 may further include an anti-tilting mechanism 3. The anti-tilting mechanism 3 is arranged below the bottom plate 401, and the anti-tilting mechanism 3 is used for adjusting the angle of the bottom plate 401. The anti-tilting mechanism 3 includes two symmetrically arranged fixing seats 304. Slide rails are provided on both of the two fixing seats 304. Slide members 308 are slidably connected in both of the two slide rails. Rack bars 307 are fixedly connected to the bottoms of both of the two slide members 308. First round holes are provided in both the housing 1 and the two fixing seats 304. The same rotating rod 305 is movably connected in a plurality of the first round holes. One end of the rotating rod 305 is fixedly connected to an adjusting member 309. Two toothed rings 306 are fixedly connected to the outer wall of the rotating rod 305. Both of the two toothed rings 306 are engaged with the corresponding rack bars 307. Two symmetrically arranged connecting seats 302 are fixedly connected to the bottom of the support plate 301. Both of the two connecting seats 302 are movably connected to the corresponding fixing seats 304. Second round holes are provided in both of the two slide members 308. Pin shafts are fixedly connected in both of the two second round holes. Strut bars 303 are movably connected to the outer walls of both of the two pin shafts. One ends of both of the two strut bars 303 away from the slide members 308 are movably connected to the corresponding connecting seats 302.

[0051] In some embodiments, the energy storage device may include the battery pack liquid cooling plate 4 as described above; energy storage battery cells, and the energy storage battery cells 4 are arranged in the space formed between the two side plates 407; and a housing 1, and the housing 1 surrounds the battery pack liquid cooling plate 4.

[0052] The inner wall of the bottom of the housing 1 is provided with an anti-tipping mechanism 3, and the anti-tipping mechanism 3 may further include a support plate 301. The support plate 301 is fixedly connected to the bottom of the bottom plate 401. An energy storage module 2 is arranged above the support plate 301. The energy storage module 2 includes a plurality of energy storage battery cells 201 and a battery pack liquid cooling plate 4. And a plurality of energy storage battery cells 201 are all arranged between two corresponding side plates 407. One side of a plurality of side plates 407 is fixedly connected with the same battery cell fixing part 204 by bolts. One side of each of the plurality of energy storage battery cells 201 is provided with a heat insulation pad 202. A convex head 2041 is fixedly connected to one side of the battery cell fixing part 204 close to the heat insulation pad 202. The convex platform 2041 is in close contact with the adjacent heat insulation pad 202. A plurality of electrode connecting parts 203 are arranged above the energy storage battery cells 201. And the electrode connecting parts 203 are connected to the positive and negative electrodes of two adjacent energy storage battery cells 201.

[0053] In this application, the energy storage battery cells 201 are installed in corresponding positions through the battery cell fixing parts 204. When the device cannot maintain a horizontal position in the working environment, the adjusting part 309 can be used to screw the rotating rod 305, drive the rack 307 and the sliding part 308 to move through the meshing of the gear ring 306, push the support rod 303, and force the support plate 301 to drive the energy storage device to change the angle to maintain a horizontal position; after the energy storage device works for a long time, the coolant is injected through the inflow joint 403, and enters the bottom plate flow channel 410 and the side plate flow channel 406 respectively through the bottom plate 401 inflow port 408 and the inflow channel 405 for circulating flow, and then flows out through the outflow joint 402, circulating to dissipate heat from the energy storage battery cells 201 comprehensively and integrally.

[0054] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that the scope described in this specification.

[0055] The above-described embodiments merely represent several implementation manners of this application, and are only used to illustrate the technical solutions of this application, rather than to limit it; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application. For those of ordinary skill in the art, without departing from the concept of this application, several deformations and improvements can still be made, and these all belong to the protection scope of this application.

Claims

1. A battery pack liquid cooling plate, comprising a bottom plate, wherein a bottom plate flow channel is provided in the bottom plate, characterized in that: The battery pack liquid cooling plate also includes: A first vertical plate, arranged on the bottom plate; a first channel is arranged inside the first vertical plate, and the first channel is communicated with the bottom plate flow channel; A second vertical plate is arranged on the bottom plate and is opposite to the first vertical plate; a second channel is arranged inside the second vertical plate, and the second channel is communicated with the bottom plate flow channel; a transverse plate, disposed on the bottom plate and having one side connected to the first vertical plate and the second vertical plate; the transverse plate comprises an upper flow channel and a lower flow channel, the upper flow channel is communicated with the first channel, and the lower flow channel is communicated with the second channel; and A plurality of side plates are arranged side by side on the other side of the horizontal plate, and each of the side plates is provided with a side plate flow channel, and the side plate flow channel is respectively connected with the upper flow channel and the lower flow channel; a space for accommodating energy storage cells is formed between two adjacent side plates.

2. A battery pack liquid cooling plate according to claim 1, characterized in that: Also includes: The first vertical plate is provided with an inflow joint, and the inflow joint is connected to the first channel; the second vertical plate is provided with an outflow joint, and the outflow joint is connected to the second channel.

3. The battery pack liquid cooling plate according to claim 1, characterized in that: The side plate flow channel is arranged along the length direction of the side plate and is in a U-shaped structure; two ends of the U-shaped structure are respectively connected to the upper flow channel and the lower flow channel.

4. The battery pack liquid cooling plate according to claim 1, characterized in that: Also includes: The battery cell fixing member is arranged on a side of the side plate away from the transverse plate and is used for fixing the energy storage battery cell.

5. The battery pack liquid cooling plate according to claim 4, characterized in that: The battery cell fixing member is provided with a convex head, and the convex head is used to press the heat insulation pad tightly to fix the energy storage battery cell.

6. The battery pack liquid cooling plate according to claim 1, characterized in that: Also includes: The anti-tilt mechanism is arranged below the bottom plate and is used for adjusting the angle of the bottom plate.

7. The battery pack liquid cooling plate according to claim 6, characterized in that: The anti-tilt mechanism includes two symmetrical fixed seats, each of which is provided with a slide rail, and each of the two slide rails is slidably connected with a sliding member; each of the two sliding members is fixedly connected with a rack; each of the two fixed seats is provided with a first circular hole, and each of the two first circular holes is movably connected with the same rotating rod; one end of the rotating rod is fixedly connected with an adjusting member, and the outer wall of the rotating rod is fixedly connected with two toothed rings, and the two toothed rings are meshed with the corresponding racks.

8. The battery pack liquid cooling plate according to claim 7, characterized in that: The anti-tilt mechanism also includes two mutually symmetrical connecting seats, and the two connecting seats are movably connected to the corresponding fixed seats; a second circular hole is opened on the two sliding members, and a pin is fixed in the two second circular holes, and the two pins are movably connected to support rods respectively, and the ends of the two support rods away from the sliding members are movably connected to the corresponding connecting seats.

9. An energy storage device, characterized in that: include: The battery pack liquid cooling plate according to any one of claims 1 to 8; The energy storage cell is arranged in the space formed between the two side plates; as well as A housing surrounds the battery pack liquid cooling plate.

10. The energy storage device according to claim 9, characterized in that: The plurality of energy storage cells are arranged between the corresponding two side plates, and a heat insulation pad is arranged between the plurality of energy storage cells; a plurality of electrode connectors are arranged above the plurality of energy storage cells, and the electrode connectors are connected to the positive and negative electrodes of two adjacent energy storage cells.

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