CN216354327U

CN216354327U - Single cell and packaging hardware of electric pile thereof

Info

Publication number: CN216354327U
Application number: CN202122399914.8U
Authority: CN
Inventors: 杜念慈
Original assignee: Weijing Energy Storage Technology Co ltd
Current assignee: Weijing Energy Storage Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-19
Anticipated expiration: 2031-09-30

Abstract

The utility model is suitable for the field of flow batteries, and provides a single cell and a packaging device of a cell stack thereof, wherein the packaging device comprises the cell stack, and a plurality of single cell chips are vertically stacked and fixedly arranged between a first end plate and a second end plate to form the cell stack; two adjacent single cell chips are sealed through a first sealing gasket; the single battery chip is provided with an electrode plate reaction area and flow channel areas which are respectively arranged at two sides of the electrode plate reaction area; the single battery chip is provided with a first special-shaped sealing gasket corresponding to the flow channel region; and the single battery chip is also provided with a second special-shaped sealing gasket corresponding to the electrode plate reaction area. The stretching force generated among the single battery units in the embodiment of the utility model is mutually transmitted and counteracted through the fastening piece, and the irregular thermal deformation and the irregular position deviation generated by all the components of the single battery units in the long-term working process are avoided to a certain extent.

Description

Single cell and packaging hardware of electric pile thereof

Technical Field

The embodiment of the utility model belongs to the field of flow batteries, and particularly relates to a single cell and a packaging device of a cell stack of the single cell.

Background

The increasing exhaustion of fossil energy and the serious environmental pollution caused by the overuse of fossil energy make the research and large-scale utilization of renewable energy become an important strategy for the safe and sustainable development of energy in countries in the world.

However, power generation by renewable energy sources (such as wind energy, solar energy, ocean energy, small hydropower and the like) has the characteristics of instability and discontinuity, a matched energy storage system needs to be developed and constructed to ensure the continuity and the stability of the power generation and the power supply of the renewable energy sources, and in the existing energy storage scheme, the flow battery has the advantages of good safety, long service life, large electric storage capacity, free site selection, cleanness, environmental protection and the like, so that the flow battery is considered to be the most promising energy storage scheme applied to large-scale energy storage and power storage occasions. In addition, the high-efficiency flow battery can be used for emergency power supplies in emergency periods such as natural disasters of peak clipping and valley filling of thermal power generation and nuclear power station power grids, wars and the like, and standby power stations of important military bases and the like.

Electrolyte flows into the runner of the liquid inlet plate under the driving of the pump, and enters the electrolyte branch runner of the electrode frame through the electrolyte common channel of the bipolar plate, the electrode frame and the ion conduction membrane, and the electrolyte enters the electrode through the multi-level runner arranged on the electrode frame, flows out from the runner on the other side of the electrode frame after undergoing an oxidation-reduction reaction, and is collected into the electrolyte storage tank through the liquid inlet plate runner after the electrolyte common channel at the other side of the bipolar plate, the electrode frame and the ion conduction membrane. Through the above processes, an electrolyte flow loop is formed, so that the active substance generates oxidation-reduction reaction on the electrode, and the storage and release of electric energy are realized.

In the prior art, the sealing requirements of a flow channel in an electrode frame and an electrode plate reaction area exist, but the leakage problem of the galvanic pile occurs after the galvanic pile works for a certain time due to the poor sealing effect, the long-term work of the galvanic pile is influenced, and the maintenance cost of the galvanic pile is improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model aims to provide a single cell and a packaging device of a galvanic pile thereof, and aims to solve the problems that leakage occurs after the galvanic pile works for a certain time due to poor sealing effect of a flow channel and an electrode plate reaction zone in an electrode frame, long-term work of the galvanic pile is influenced, and maintenance cost of the galvanic pile is increased.

The embodiment of the utility model is realized as follows:

a packaging device for single battery chips and a battery pile thereof comprises the battery pile, wherein a plurality of single battery chips are vertically overlapped and fixedly arranged between a first end plate and a second end plate to form the battery pile; two adjacent single cell chips are sealed through a first sealing gasket;

the single battery chip is provided with an electrode plate reaction area and flow channel areas which are respectively arranged at two sides of the electrode plate reaction area; the single battery chip is provided with a first special-shaped sealing gasket corresponding to the flow channel region; and the single battery chip is also provided with a second special-shaped sealing gasket corresponding to the electrode plate reaction area.

In a preferred embodiment of the utility model, the flow channel region comprises a flow channel, the first profiled sealing gasket being adapted to the flow channel.

In a preferred embodiment of the present invention, the flow channel region of the single cell chip is pressure-sealed and encapsulated along the first shaped gasket by the first flange type fastener.

In a preferred embodiment of the present invention, the stack includes a first end plate and a second end plate, which are respectively disposed at both sides of a plurality of unit cell chips stacked one on another; and the first end plate, the plurality of single cell chips and the second end plate are connected and fixed through first fasteners.

In a preferred embodiment of the utility model, two adjacent single cell chips are fixed by a second fastening member, and will contact with the fastening member for sealing adjacent single cell chips, and transmit the stretching force generated by the single cell units in the process of entering and exiting the cathode and anode electrolytes.

In a preferred embodiment of the present invention, the stack is pressure-sealed and encapsulated in the electrode plate reaction region of the single cell chip along the second shaped gasket by a second flange-type fastener.

In summary, in the embodiment of the utility model, the flange-type sealing manner is adopted, and the flow channel region and the reaction region of the single cell unit are compressed, sealed and encapsulated along the special-shaped sealing gasket, so that the sealing effect of the minimum unit of the cell stack is improved; meanwhile, the single battery units are compressed, sealed and packaged in a flange type sealing mode; the fasteners for sealing the single battery units are in mutual contact with the fasteners for sealing the adjacent single battery units, and the stretching force generated by the single battery units in the process of entering and exiting the cathode electrolyte and the anode electrolyte is transmitted; the telescopic force generated among the monocell units is mutually transmitted and counteracted through the fastening piece, so that the stress mode of the whole pile can be improved, and the irregular thermal deformation and the irregular position deviation generated by each component part of the monocell units in the long-term working process are avoided to a certain extent.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic view of a packaging structure of a cell stack in a packaging apparatus for a single cell and a cell stack thereof according to an embodiment of the present invention;

fig. 2 is a front view of a single cell chip packaging structure of a single cell and a packaging device of a cell stack thereof according to an embodiment of the present invention;

fig. 3 is a structural diagram of a single cell chip in a packaging device of a single cell and a stack thereof according to an embodiment of the present invention;

fig. 4 is a perspective view of a single cell chip packaging structure of a single cell and a packaging device of a cell stack thereof according to an embodiment of the present invention.

In the drawings: 100-single cell chip, 101-first gasket; 102-a flow channel region, 103-a flow channel, 104-a first profiled gasket, 105-a first flange fastener;

200-stack, 201-first end plate, 202-second end plate, 203-first fastener, 204-second fastener, 205-electrode plate reaction zone, 206-second shaped seal, 207-second flange fastener.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1-2, in a preferred embodiment of the present invention, a packaging device for a single cell and a cell stack thereof comprises a cell stack 200, wherein a plurality of single cell chips 100 are stacked and fixed up and down between a first end plate 100 and a second end plate 202 to form the cell stack 200; the adjacent two single cell chips 100 are sealed with a first gasket 101.

With continued reference to fig. 3 and fig. 4, in a preferred embodiment of the present invention, the single cell chip 100 has an electrode plate reaction region 205 and flow channel regions 102 respectively disposed at two sides of the electrode plate reaction region 205; the single cell chip 100 is provided with a first special-shaped sealing gasket 104 corresponding to the flow channel region 102; the single cell chip 100 is also provided with a second special-shaped sealing gasket 206 corresponding to the electrode plate reaction region 205.

Further, as shown in fig. 4, in the preferred embodiment of the present invention, the flow channel region 102 includes a flow channel 103, and the first shaped gasket 104 is adapted to the flow channel 103.

Further, in a preferred embodiment of the present invention, the flow channel region 102 of the single cell chip 100 is compression-sealed and encapsulated along the first shaped gasket 104 by the first flange type fastener 105.

With continued reference to fig. 1-4, in a preferred embodiment of the present invention, the stack 200 includes a first end plate 201 and a second end plate 202, where the first end plate 201 and the second end plate 202 are respectively disposed at two sides of the plurality of single battery chips 100 stacked on each other; the first end plate 201, the plurality of single cell chips 100, and the second end plate 202 are connected and fixed by first fasteners.

Referring to fig. 1 to 4, in a preferred embodiment of the present invention, two adjacent single cell chips 100 are fixed by a second fastening member 204, and will contact with the fastening member for sealing of the adjacent single cell chips, and transmit the stretching force generated by the single cell unit in the process of passing the anolyte and catholyte into and out of the single cell unit.

With continued reference to fig. 1, in the preferred embodiment of the present invention, the stack 200 is pressure-sealed and encapsulated along the second shaped gasket 206 to the electrode plate reaction region 205 of the single cell chip 100 by the second flange fastener 207.

As shown in fig. 3, the present invention seals the flow channel region 102 using a first shaped gasket 104 according to the range of a specific flow channel 103, while securing the sealing effect using a first flange fastener 105 along the periphery of the first shaped gasket 104 according to the flange principle; meanwhile, according to the structure of the electrode plate, the electrode plate reaction region 205 is sealed by using the second anisotropic sealing gasket 206, and according to the flange principle, the sealing effect is ensured by using the second flange type fastener 207 along the periphery of the second anisotropic sealing gasket 206, as shown in fig. 4, and finally, the whole packaging of the single cell chip is completed.

Specially-shaped sealing gaskets are additionally designed on the single cell chips aiming at the common electrochemical reaction area for tight connection among the single cell chips 100, so that the single cell chips 100 are assembled and combined into a cell stack 200, and peripheral fasteners are used for ensuring the overall sealing effect of the cell stack, as shown in fig. 1.

The fastener form used in the packaging process of the single battery chip can be a plug-and-play type or a threaded connection structure. In the integral assembly of the stack 200, the fastening member for sealing the single cell unit may contact with the fastening member for sealing the adjacent single cell unit, and transmit the expansion and contraction force of the single cell unit generated in the process of the cathode and anode electrolytes entering and exiting the single cell unit. The stretching force generated among the monocell units is mutually transmitted and counteracted through the fastening piece, so that the stress mode of the whole pile can be improved, and the irregular thermal deformation and the irregular position deviation generated by each component part of the monocell units in the long-term working process are avoided to a certain extent, as shown in figure 1.

In summary, the flange-type sealing manner is used to press and seal the flow channel region and the reaction region of the single cell unit along the special-shaped sealing gasket, so that the sealing effect of the minimum unit (single cell unit) of the stack is improved. Meanwhile, the single battery units are compressed, sealed and packaged in a flange type sealing mode. The fastening piece for sealing the single battery unit is contacted with the fastening piece for sealing the adjacent single battery unit, and transmits the stretching force generated by the single battery unit in the process of the inlet and outlet of the cathode and anode electrolyte. The telescopic force generated among the monocell units is mutually transmitted and counteracted through the fastening piece, so that the stress mode of the whole pile can be improved, and the irregular thermal deformation and the irregular position deviation generated by each component part of the monocell units in the long-term working process are avoided to a certain extent.

The above embodiments are merely illustrative of a preferred embodiment, but not limiting. When the utility model is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the utility model have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the utility model not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.

Claims

1. The packaging device is characterized by comprising a stack, wherein a plurality of single cell chips are vertically stacked and fixedly arranged between a first end plate and a second end plate to form the stack; two adjacent single cell chips are sealed through a first sealing gasket;

2. The packaging arrangement for a single cell and a stack thereof as claimed in claim 1, wherein said flow channel region comprises a flow channel, and a first profiled gasket is fitted to said flow channel.

3. The packaging device for the single cell sheet and the cell stack thereof as claimed in claim 1 or 2, wherein the flow channel region of the single cell chip is compression-sealed and packaged along the first profiled gasket by a first flange-type fastener.

4. The packaging device for the single battery piece and the battery pack thereof as claimed in claim 3, wherein the battery pack comprises a first end plate and a second end plate, the first end plate and the second end plate are respectively arranged at two sides of the plurality of single battery pieces which are overlapped with each other; and the first end plate, the plurality of single cell chips and the second end plate are connected and fixed through first fasteners.

5. The packaging device for the single battery cell and the battery stack thereof as claimed in claim 4, wherein two adjacent single battery cells are fixed by a second fastener.

6. The single cell and its packaging device of claim 5, characterized in that, the said stack is pressed and sealed to the electrode plate reaction area of the said single cell chip along the second shaped gasket by the second flange type fastener.