Battery pack liquid cooling plate and energy storage device

Abstract

The utility model 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, in particular to a battery pack liquid cooling plate and energy storage device. BACKGROUND

[0002] Power storage devices are devices for storing electrical energy, and common ones are storage batteries such as lead-acid batteries, whose electrodes are mainly composed of lead and lead dioxide, and the electrolyte is a 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 low cost and mature technology, and is commonly used as a starting power source for cars and some small-scale energy storage systems. Lithium-ion batteries have high energy density and low self-discharge rate. Most of the batteries of electronic devices such as mobile phones and notebook computers are lithium-ion batteries, and they also have applications in large-scale energy storage systems.

[0003] In the prior art, energy loss occurs during the use of energy storage cells, and part of the electrical energy is converted into heat energy, causing the temperature of the space where the energy storage cells are located to continuously increase. The full-wrapped liquid cooling plate currently used in combination with an auxiliary heat dissipation device (air cooling) can only assist in cooling the wrapped shell. This cooling method has great limitations, and the cooling of the space where the energy storage cells are located is not obvious. At the same time, the installation and disassembly of the energy storage cells are relatively inconvenient, making maintenance more cumbersome and the use effect worse. Content of the utility model

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

[0005] Specifically, a battery pack liquid cooling plate comprises a bottom plate, wherein a bottom plate flow channel is arranged in the bottom plate, and the battery pack liquid cooling plate further comprises:

[0006] A first vertical plate is arranged on the bottom plate, and a first channel is arranged in the first vertical plate, wherein the first channel is in communication with the bottom plate flow channel;

[0007] A second vertical plate is arranged on the bottom plate and opposite to the first vertical plate, and a second channel is arranged in the second vertical plate, wherein the second channel is in communication 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, wherein the horizontal plate comprises an upper flow channel and a lower flow channel, the upper flow channel is in communication with the first channel, and the lower flow channel is in communication with the second channel; and

[0009] 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 in communication with the upper flow channel and the lower flow channel respectively; and a space for accommodating energy storage cells is formed between two adjacent side plates.

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

[0011] The first vertical plate is provided with an inflow joint connected with the first channel; and the second vertical plate is provided with an outflow joint connected with 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; and the two ends of the U-shaped structure are connected with the upper flow channel and the lower flow channel respectively.

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

[0014] An electric cell fixing member is arranged on the side of the side plate away from the horizontal plate for fixing the electric cell.

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

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

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

[0018] As a preferred solution, the anti-tilting mechanism comprises two mutually symmetrical fixing seats, two sliding rails are formed in the two fixing seats, and two sliding members are slidably connected in the two sliding rails; the two sliding members are fixedly connected with two racks respectively; two first circular holes are formed in the two fixing seats, and a same rotating rod is movably connected in the two first circular holes; 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 gear rings which are in mesh with the corresponding racks.

[0019] As a preferred solution, the anti-tilting mechanism further comprises two mutually symmetrical connecting seats which are movably connected with the corresponding fixing seats; a second circular hole is formed in each of the two sliding members, and a pin shaft is fixed in each of the two second circular holes; two supporting rods are movably connected with the pin shafts respectively, and one end of each of the two supporting rods away from the sliding member is movably connected to the corresponding connecting seat.

[0020] In addition, the application also provides an energy storage device comprising:

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

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

[0023] The shell surrounds the battery pack liquid cooling plate.

[0024] As a preferred solution, the plurality of energy storage battery cells are arranged between the corresponding two side plates, and a heat insulation pad is arranged between the plurality of energy storage battery cells; a plurality of electrode connecting pieces are arranged above the plurality of energy storage battery cells, and the electrode connecting pieces are connected to the positive and negative electrodes of the adjacent two energy storage battery cells.

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

[0026] By arranging the bottom plate, vertical plate, horizontal plate and side plate, and by the flow channel in the bottom plate, vertical plate, horizontal plate and side plate to transport the cooling liquid, after the energy storage device works for a long time, the cooling liquid is injected through the inflow joint, enters the bottom plate flow channel and the side plate flow channel through the bottom plate inflow port and the inflow channel, and then flows out through the outflow joint, which can circulate to heat the energy storage battery cell as a whole and reduce its temperature, and the upper part of the energy storage battery cell with a relatively higher working temperature can obtain better heat exchange effect.

[0027] The energy storage battery cell can be installed and removed more conveniently by the battery cell fixing piece, which has strong maintainability, and the heat exchange area of the energy storage battery cell is improved by the contact of the side plate and the bottom plate with the two side surfaces and the bottom surface of the energy storage battery cell, which is beneficial to further reducing the working temperature of the energy storage battery cell and has better use effect.

[0028] By arranging the anti-inclination module, when the device is placed in a non-horizontal working environment, the adjusting piece is twisted to drive the rotating rod, the gear ring is engaged to drive the rack and the sliding piece to move, the supporting rod is pushed, and the supporting plate drives the energy storage device to change the angle to maintain the horizontal state, which can prevent the adverse effects of long-term inclination on the operation of the battery cell, and maintaining the horizontal state can ensure the smooth flow of the cooling liquid and improve the use effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0030] The structure, proportion, size, etc. shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the conditions that can be implemented by the application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the application, should still fall within the scope of the technical content disclosed by the application.

[0031] Figure 1 Structure diagram of the battery pack liquid cooling plate proposed by the application;

[0032] Figure 2 Internal flow channel structure sectional view of the battery pack liquid cooling plate proposed by the application;

[0033] Figure 3 Overall structure diagram of the energy storage device proposed by the application;

[0034] Figure 4 Internal structure diagram of the energy storage device proposed by the application;

[0035] Figure 5 Partial diagram of the battery cell fixing member proposed by the application;

[0036] Figure 6 Structure diagram of the anti-tilting mechanism of the energy storage device proposed by the application; DETAILED DESCRIPTION

[0037] In order for those skilled in the art to better understand the application scheme, the technical solutions in the application examples will be described clearly and completely below in combination with the drawings in the application examples.

[0038] In the description of the application, it should be understood that the orientation or position relationship indicated by the terms is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the devices, elements, modules, systems, platforms or devices referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application. The following description of the application is only for the understanding of the individual embodiments of the technical solutions of the application, and other embodiments are not embodied in the following description, but it does not mean that the application excludes these other embodiments, and the technical solutions of the application are also not limited to the specific embodiments described below. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the application.

[0039] It should be noted that if the terms "first", "second" and the like appear in the description and claims of the present application and the above-described drawings, the description is only used to distinguish similar objects, and does not have to be used to 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 the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a system, product or device that includes a series of units or modules or modules or components does not have to be limited to those units or modules or modules or components clearly listed, but can include other components not clearly listed or inherent to these systems, products or devices.

[0040] The technical solutions of the present application will be further illustrated below in conjunction with the drawings and through specific embodiments.

[0041] In some embodiments, as shown in Figures 1-6 The present application provides a battery pack liquid cooling plate 4 and an energy storage device comprising the same, the battery pack liquid cooling plate 4 comprising a bottom plate 401, wherein a bottom plate flow channel 410 is arranged in the bottom plate 401.

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

[0043] The first vertical plate 41 is arranged on the bottom plate 401; a first channel 411 is arranged in 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 arranged on the bottom plate 401 and opposite to the first vertical plate 41; a second channel (not shown in the figure) is arranged in the second vertical plate 42, and the second channel communicates with the bottom plate flow channel 410.

[0045] The horizontal plate 43 is arranged on the bottom plate 401, and one side of the horizontal plate 43 is connected with the first vertical plate 41 and the second vertical plate 42; the horizontal plate 43 comprises 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 horizontal plate 43, and each of the side plates 407 is provided with a side plate flow channel 406, which respectively communicates with the upper flow channel 405 and the lower flow channel 404; the space for accommodating the energy storage cell 201 is formed between two adjacent side plates 407. The plurality of side plates 407 can be welded equidistantly on the top of the bottom plate 401.

[0047] In some embodiments, the first vertical plate 41 is provided with an inflow joint 403 connected with the first channel 411; the second vertical plate 42 is provided with an outflow joint 402 connected with the second channel. The bottom plate 401 is provided with a bottom plate inflow port 408 and a bottom plate outflow port 409, and the bottom plate inflow port 408 and the bottom plate outflow port 409 are respectively connected 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; the two ends of the U-shaped structure are respectively connected with the upper flow channel 405 and the lower flow channel 404.

[0049] In some embodiments, the battery pack liquid cooling plate 4 can further include a cell fixing piece 204, as shown in the drawings, the cell fixing piece 204 is arranged on the side of the side plate 407 away from the horizontal plate 43, and the cell fixing piece 204 is used for fixing the cell. The cell fixing piece 204 is provided with a convex head 2041, and the convex head 2041 is used for tightly pressing the thermal insulation pad 202 to fix the cell 201. Figures 4-5

[0050] In some embodiments, the battery pack liquid cooling plate 4 can further include an anti-tilt mechanism 3 arranged below the bottom plate 401, and the anti-tilt mechanism 3 is used for adjusting the angle of the bottom plate 401. The anti-tilt mechanism 3 includes two symmetrical fixed seats 304, two sliding rails are arranged on the two fixed seats 304, two sliding members 308 are slidably connected in the two sliding rails, the bottoms of the two sliding members 308 are fixedly connected with racks 307, first circular holes are arranged on the shell 1 and the two fixed seats 304, and a rotating rod 305 is movably connected in the plurality of first circular holes, one end of the rotating rod 305 is fixedly connected with an adjusting member 309, the outer wall of the rotating rod 305 is fixedly connected with two tooth rings 306, the two tooth rings 306 are in meshing connection with the corresponding racks 307, the bottom of a supporting plate 301 is fixedly connected with two symmetrical connecting seats 302, the two connecting seats 302 are movably connected with the corresponding fixed seats 304, second circular holes are arranged on the two sliding members 308, and pins are fixedly connected in the two second circular holes, the outer walls of the two pins are movably connected with supporting rods 303, and the ends of the two supporting rods 303 away from the sliding members 308 are movably connected with the corresponding connecting seats 302.

[0051] In some embodiments, the energy storage device can include the battery pack liquid cooling plate 4 as described above; an energy storage cell, and the energy storage cell 4 is arranged in the space formed between the two side plates 407; and a shell 1 surrounding the battery pack liquid cooling plate 4.

[0052] ​The bottom inner wall of the shell 1 is provided with an anti-tilting mechanism 3, and the anti-tilting mechanism 3 can further include a support plate 301 fixedly connected to the bottom of the bottom plate 401, and the support plate 301 is provided above the energy storage module 2, the energy storage module 2 includes a plurality of energy storage cells 201 and a battery pack liquid cooling plate 4, and the plurality of energy storage cells 201 are arranged between the corresponding two side plates 407, and one side of the plurality of side plates 407 is fixedly connected with the same cell fixing piece 204, one side of the plurality of energy storage cells 201 is provided with a heat insulation pad 202, and the side of the cell fixing piece 204 close to the heat insulation pad 202 is fixedly connected with a protruding head 2041, the protruding head 2041 is close to the adjacent heat insulation pad 202, and the upper side of the energy storage cell 201 is provided with a plurality of electrode connecting pieces 203, and the electrode connecting pieces 203 are connected to the positive and negative poles of the adjacent two energy storage cells 201.

[0053] The energy storage cells 201 are installed in the corresponding position by the cell fixing piece 204, when the device cannot be kept horizontal in the working environment, the adjusting piece 309 can be used to twist the rotating rod 305, the gear ring 306 is engaged to drive the rack 307 and the sliding piece 308 to move, the supporting rod 303 is pushed, and the support plate 301 drives the energy storage device to change the angle to keep horizontal; after the energy storage device works for a long time, the cooling liquid is injected through the inflow joint 403, and then flows into the bottom plate flow channel 410 and the side plate flow channel 406 through the bottom plate inlet 408 and the inflow channel 405, and then flows out through the outflow joint 402, and the circulation is used to comprehensively and integrally cool the energy storage cells 201.

[0054] The technical features of the above embodiments can be combined in any way, and to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0055] The above embodiments only express several embodiments of the present application, and are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part 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 the present application, and those skilled in the art can make several modifications and improvements without departing from the concept of the present application, which are all within the protection scope of the present application.

Claims

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

2. The battery pack liquid cooling plate of claim 1, wherein, Further comprising: a flow-in joint arranged on the first vertical plate and connected with the first channel, and a flow-out joint arranged on the second vertical plate and connected with 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 in a U-shaped structure, and two ends of the U-shaped structure are connected with the upper flow channel and the lower flow channel respectively.

4. The battery pack liquid cooling plate of claim 1, wherein, Further comprising: an energy storage cell fixing member arranged on the side plate away from the horizontal plate and used for fixing the energy storage cell.

5. The battery pack liquid cooling plate according to claim 4, characterized in that: a convex head is arranged on the energy storage cell fixing member and used for tightly pressing the thermal insulation pad to fix the energy storage cell. 6.The battery pack liquid cooling plate of claim 1, wherein, Further comprising: an anti-tilting mechanism arranged below the bottom plate and 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-tilting mechanism comprises two mutually symmetrical fixing seats, two sliding rails are arranged in the two fixing seats, and two sliding members are slidably connected in the two sliding rails; the two sliding members are fixedly connected with two racks respectively; two first circular holes are arranged in the two fixing seats, and a same rotating rod is movably connected in the two first circular holes; 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 which are in mesh with the corresponding racks.

8. The battery pack liquid cooling plate according to claim 7, characterized in that: the anti-tilting mechanism further comprises two mutually symmetrical connecting seats, and the two connecting seats are movably connected with the corresponding fixing seats; two second circular holes are arranged in the two sliding members, and two pins are fixed in the two second circular holes; two supporting rods are movably connected with the two pins respectively, and one end of each of the two supporting rods away from the sliding member is movably connected with the corresponding connecting seat.

9. An energy storage device, characterized by, comprising: the battery pack liquid cooling plate according to any one of claims 1-8; an energy storage cell arranged in the space formed between the two side plates; and an outer shell surrounding the battery pack liquid cooling plate.

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

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