Lithium slurry battery

Abstract

The utility model provides a high-capacity lithium slurry battery. A shell comprises an upper shell cover and a lower shell which are made of polymer materials. And the side wall of the lower shell is provided with a liquid cooling agent injection port, a liquid cooling agent discharge port, a plurality of pole mounting parts, a third electrode opening, an injection port and a discharge port. The upper surface of the bottom plate of the lower shell is provided with a plurality of supporting ribs which are mutually spaced, the liquid cooling pipes are arranged in gaps between the adjacent supporting ribs and are in fluid communication with the liquid cooling agent injection port and the liquid cooling agent discharge port, and the battery cells are arranged on the supporting ribs so as to prevent the battery cells from being directly pressed on the liquid cooling pipes. And the liquid cooling agent injection port, the liquid cooling agent discharge port, the plurality of pole mounting parts, the third electrode opening, the injection port, the discharge port and the supporting ribs are integrally formed with the shell. According to the lithium slurry battery, internal heat dissipation of a high-capacity battery can be better realized, liquid cooling pipe positioning is realized, the liquid cooling pipe is protected from being damaged, and the lithium slurry battery is simple in structure, convenient to manufacture and low in cost.

Description

Technical Field

[0001] The utility model relates to the field of lithium batteries, in particular to a lithium slurry battery. Background Art

[0002] Energy storage will play an indispensable and important role in the new power system. Electrochemical energy storage, mainly lithium-ion batteries, has the advantages of high energy density and rechargeability, and is developing rapidly. The capacity of lithium-ion batteries used in electrochemical energy storage is getting larger and larger. Due to the increased volume of large-capacity lithium-ion batteries, it is more difficult to conduct internal heat, and the risk of gas accumulation and explosion in thermal runaway is also higher. Utility Model Content

[0003] In view of the above problems, the utility model provides a large-capacity lithium slurry battery, the shell includes an upper shell cover and a lower shell made of polymer material. A liquid coolant injection port, a liquid coolant discharge port, a plurality of pole mounting parts, a third electrode opening, an injection port and a discharge port are provided on the side wall of the lower shell. A plurality of support ribs spaced apart from each other are provided on the upper surface of the bottom plate of the lower shell, the liquid cooling pipe is placed in the gap between adjacent support ribs and is in fluid communication with the liquid coolant injection port and the liquid coolant discharge port, and the battery cell is placed on the support rib to avoid the battery cell being directly pressed on the liquid cooling pipe. The liquid coolant injection port, the liquid coolant discharge port, a plurality of pole mounting parts, the third electrode opening, the injection port, the discharge port and the support ribs are integrally formed with the shell. The lithium slurry battery can better realize the internal heat dissipation of the large-capacity battery, realize the positioning of the liquid cooling pipe and protect the liquid cooling pipe from being damaged, the polymer shell has a certain tensile deformation capacity, reduces the risk of battery explosion, and has a simple structure, convenient manufacturing and low cost.

[0004] The technical solution provided by the utility model is as follows:

[0005] According to the utility model, a lithium slurry battery is provided, which includes a shell, a battery cell, an electrode column and a liquid cooling tube. The battery cell is placed in the shell, and the battery cell is provided with an electrode sheet and a tab connecting sheet. The electrode sheet is placed in the shell in a horizontal manner, and the tabs of the electrode sheet form a tab cluster and extend vertically upward along the space between the side of the battery cell and the shell, and the tab connecting sheet is conductively connected to the tab cluster. The electrode column includes a pole column body and a pole column connecting sheet, and the pole column connecting sheet is conductively connected to the pole column body. The tab connecting sheet is welded to the pole column connecting sheet. The length of the shell is about 300mm to 1500mm, the width is about 200mm to 500mm, and the height is about 50mm to 200mm. Preferably, the length is about 600mm to 1000mm, the width is about 350mm to 450mm, and the height is about 90mm to 150mm, and the shell includes an upper shell cover and a lower shell. The lower shell includes four integrally formed side walls and a bottom plate, and the four side walls include a first side wall and a second side wall that are arranged oppositely, and a third side wall and a fourth side wall that are arranged oppositely. A liquid coolant injection port and a liquid coolant discharge port are provided on the side wall. The liquid coolant injection port and the liquid coolant discharge port can be arranged on the same side wall, or can also be arranged on different side walls. A plurality of support ribs spaced apart from each other are provided on the upper surface of the bottom plate of the lower shell, and a liquid cooling pipe is arranged along the gap between adjacent support ribs, and the liquid cooling pipe is respectively connected to the liquid coolant injection port and the liquid coolant discharge port. The battery cell is placed on the support ribs. In other words, the lithium slurry battery is a large horizontal lithium slurry battery. The positive and negative electrode sheets in the battery cell are cross-stacked in a horizontal manner. After the tabs of the positive electrode sheet are clustered, they extend vertically upward along the side of the battery cell and are conductively connected to the tab connecting sheet for the positive electrode. After the tabs of the negative electrode sheet are clustered, they extend vertically upward along the other side of the battery cell and are conductively connected to the tab connecting sheet for the negative electrode. A plurality of tab connection pieces for positive electrodes respectively connected to a plurality of clusters of positive tabs are located on one side of the battery cell, and a plurality of tab connection pieces for negative electrodes respectively connected to a plurality of clusters of negative tabs are located on the opposite side of the battery cell. When the battery cell is placed in the housing, the tab connection piece is located in the space between the side of the battery cell and the side wall of the lower housing. A plurality of pole mounting parts are respectively provided on the two opposite side walls of the lower housing, a plurality of positive poles are installed in the pole safety part located on one side of the lower housing, and a plurality of negative poles are installed in the pole mounting part located on the other side of the lower housing. The pole connection piece of the electrode column corresponds to the tab connection piece of the battery cell and can be connected together by welding. In order to ensure the heat dissipation of the large battery cell, a plurality of support ribs spaced apart from each other are provided on the upper surface of the bottom plate of the lower housing, and the gaps between adjacent support ribs are used to install and fix a liquid cooling pipe, one end of the liquid cooling pipe is connected to the liquid coolant injection port and the other end is connected to the liquid coolant discharge port.For example, the two ends of the liquid cooling pipe are provided with external threads, the liquid coolant injection port and the liquid coolant discharge port are in the form of openings, and a reinforcing platform of a reinforcing structure can be arranged around the openings. The two ends of the liquid cooling pipe extend out of the shell from the liquid coolant injection port and the liquid coolant discharge port respectively and are sealed and connected by nuts and seals. In addition to the threaded connection method, the liquid cooling pipe and the liquid coolant injection port and the liquid coolant discharge port can also be sealed and connected by other methods such as interference fit, hot melt, etc. The external liquid coolant enters the liquid cooling pipe inside the battery through the liquid coolant injection port on the side wall of the lower shell, and the liquid coolant cools the inside of the battery along the liquid cooling pipe, and then is discharged from the inside of the battery through the liquid coolant discharge port on the side wall of the lower shell. The height of the support ribs is greater than or equal to the height of the liquid cooling pipe (i.e., the outer diameter of the liquid cooling pipe), and the width of the gap between the support ribs is greater than or equal to the width of the liquid cooling pipe (i.e., the outer diameter of the liquid cooling pipe). The supporting ribs can not only position, install and fix the liquid cooling tubes, but also support the battery cells to prevent the weight of the large battery cells from being directly applied to the liquid cooling tubes, thereby protecting the liquid cooling tubes.

[0006] The support ribs can be arranged in a variety of ways, such as straight line arrangement, curved arrangement, spiral arrangement, etc. Preferably, the support ribs are straight strips, multiple support ribs are arranged in parallel, a space is left between the end of the support rib and the side wall of the lower shell, and the liquid cooling pipe is arranged in a serpentine shape around the multiple support ribs; or, the liquid cooling pipe includes a main liquid cooling pipe and a branch liquid cooling pipe, the main liquid cooling pipe is located in the space between the end of the support rib and the side wall of the lower shell, and the branch liquid cooling pipe is arranged in parallel along the support ribs. For example, multiple long strip support ribs are arranged in parallel along the width direction of the shell, the length of the support rib is shorter than the width of the lower shell, and the two ends of the support rib are respectively separated from the two side walls of the lower shell by a distance. The liquid cooling pipe includes a vertical part and a curved part, the vertical part of the liquid cooling pipe is placed in the gap between two adjacent support ribs, the curved part of the liquid cooling pipe is located between the end of the support rib and the side wall of the lower shell, and the liquid cooling pipe is arranged in a serpentine or wavy shape along the parallel support ribs.

[0007] A plurality of support and positioning blocks may also be provided on the upper surface of the bottom plate of the lower housing. The support and positioning blocks may be rectangular block structures, and their height is similar to the height of the support ribs. The positions of the support and positioning blocks correspond to the positions of the curved portions of the liquid cooling tubes arranged in a serpentine or wavy shape, so as to position and fix the curved portions of the liquid cooling tubes, and the support and positioning blocks can support the battery cells placed thereon.

[0008] 2 to 10 pole mounting parts may be provided on the first side wall and the second side wall of the lower shell, respectively. Preferably, 5 pole mounting parts are provided on the first side wall and the second side wall of the lower shell, respectively. For example, 5 pole mounting parts for positive poles are provided on the first side wall, and 5 pole mounting parts for negative poles are provided on the second side wall opposite to the first side wall. The pole body includes a cylindrical column and a sheet-like substrate, and the cylindrical column stands vertically on the sheet-like substrate. The end face of the cylindrical column can be fixedly connected to the substrate or the cylindrical column and the substrate can be integrally formed. The pole mounting part includes a through hole for the cylindrical column to pass through, a recessed part located on the inner surface of the side wall and surrounding the through hole, and a protruding part located on the outer surface of the side wall and surrounding the through hole. The size of the through hole is substantially the same as that of the cylindrical column. An external thread may be provided on the cylindrical column, and when the cylindrical column passes through the through hole, a nut and a seal can be used to achieve a sealed connection. The cylindrical body can also be sealed and connected to the lower shell by other means, such as interference fit. The size of the substrate is roughly the same as the size of the recessed portion on the inner surface of the side wall of the lower shell. The substrate can be embedded in the recessed portion to make the inner surface of the side wall flat. The protrusion on the outer surface of the side wall of the lower shell is used to enhance the connection strength of the electrode column.

[0009] An injection port for injecting fluids such as electrolytes or safety agents may also be provided on the first side wall of the lower shell, and an outlet for discharging fluids such as electrolytes or safety agents may also be provided on the second side wall of the lower shell. The injection port and the outlet are tubular components with internal threads. The injection port and the outlet may also be provided on the same side wall of the lower shell, or the injection port and the outlet may be provided on adjacent side walls of the lower shell, respectively. The injection port and the outlet may be connected to an external interface by a threaded connection, and are used for injecting and discharging fluids such as electrolytes and safety agents. In addition, the outlet may also be used for conventional exhaust.

[0010] The lithium slurry battery may also be provided with a third electrode, and the pole of the third electrode is conductively connected to the pole ear of the battery cell. Preferably, a third electrode opening may be provided on the first side wall or the second side wall of the lower shell, and the pole of the third electrode can pass through the third electrode opening. In order to enhance the connection strength, a protruding reinforcing platform may be provided around the third electrode opening on the outer surface of the side wall of the lower shell. The third electrode may include a cylindrical cylinder and a sheet-like substrate, and the cylindrical cylinder stands vertically on the sheet-like substrate. The circular end face of the cylindrical cylinder can be fixedly connected to the substrate or the cylindrical cylinder and the substrate can be integrally formed. The size of the third electrode opening is substantially the same as the size of the cylindrical cylinder of the third electrode. The cylindrical cylinder of the third electrode may be provided with an external thread, and when the cylindrical cylinder passes through the third electrode opening, a sealed connection can be achieved using a nut and a seal. The cylindrical cylinder of the third electrode can also be sealed and connected to the lower shell by other means, such as interference fit.

[0011] The four corners where the four side walls in the lower shell intersect can be respectively provided with guiding and positioning parts. The guiding and positioning parts include a guiding surface inclined toward the inside of the lower shell and a vertical fixing surface. The four guiding and positioning parts are opposite to each other, so that the guiding surfaces and fixing surfaces of the two opposite guiding and positioning parts are opposite to each other, the inclined guiding surface is used to guide the battery cell into the lower shell, and the vertical fixing surface is used to fix the battery cell entering the lower shell. The guiding surface is located at the upper part of the guiding and positioning part, and the fixing surface is located below the guiding surface. In order to reduce the volume of the battery, preferably, the size of the battery cell is slightly smaller than the size of the lower shell, which increases the difficulty of the battery cell entering the shell. The guiding and positioning part can make the battery cell fall smoothly along the inclined guiding surface to the desired position in the lower shell, and fix the battery cell by the vertical fixing surface to prevent the battery cell from shaking in the shell. The guiding and positioning part can be a long strip block structure, and the part of the guiding and positioning part provided with the guiding surface and the fixing surface faces the battery cell, and the guiding surfaces of the two opposite guiding and positioning parts are opposite to each other, and the fixing surfaces are opposite to each other. An integrally formed support block may also be provided at the bottom of the guide positioning portion. The height of the support block is substantially the same as the height of the support ribs, so as to support the four corners of the battery cell.

[0012] The outer shell of a large lithium slurry battery is relatively large. In order to reduce the weight of the battery, the thickness of the outer shell may be only a few millimeters and cannot be too thick. Therefore, reinforcing ribs can be provided at the intersection of the four side walls and the bottom plate in the lower shell to strengthen the strength of the lower shell. The reinforcing ribs can be block-shaped or long strip-shaped. The reinforcing ribs can be easily integrated with the lower shell.

[0013] The pole connecting piece and the tab connecting piece are usually welded by double-sided clamping with a welding fixture. In the present utility model, the connection between the pole connecting piece and the tab connecting piece is first welded and then bent or first bent and then welded. The upper part of the pole connecting piece of the electrode column can be bent, and the upper part of the tab connecting piece of the battery cell can be bent. After the upper part of the pole connecting piece and the upper part of the tab connecting piece are welded on the outside of the lower shell, they are bent downward and placed in the lower shell; or, the lower part of the pole connecting piece of the electrode column can be bent, and the lower part of the pole connecting piece is bent upward and then welded to the upper part of the tab connecting piece. That is to say, when the internal space of the lower shell is narrow, the welding fixture cannot be extended into the lower shell to weld the pole connecting piece and the pole lug connecting piece. At this time, the pole connecting piece and the pole lug connecting piece extending vertically upward can be led to the outside of the lower shell from the space between the side of the battery cell and the side wall of the lower shell, and the pole connecting piece and the pole lug connecting piece are welded outside the lower shell. After the welding is completed, the upper part of the pole connecting piece and the pole lug connecting piece welded together are bent and placed into the lower shell. When the welding chuck can be extended into the lower shell, in the space between the side of the battery cell and the side wall of the lower shell, the lower part of the pole connecting piece can be bent upward and overlapped with the pole lug connecting piece extending upward, and the welding chuck is extended into the lower shell to weld the upward bent part of the pole connecting piece to the pole lug connecting piece.

[0014] The upper shell cover of the battery can be a plate-like structure, and a crisscross reinforcement strip can be provided on the upper shell cover. The edges of the upper shell cover are sealed with the lower shell. The crisscross reinforcement strips can be in the form of a rectangular grid frame, which plays a role in reinforcing the plate-like upper shell cover. The edges of the upper shell cover are covered on the lower shell, and a sealing connection can be achieved by heat melting, ultrasonic welding, etc.

[0015] The material of the shell is preferably a polymer material that is not corroded or dissolved by the electrolyte, and the polymer material may be polypropylene, polyethylene, polyphenylene sulfide or polytetrafluoroethylene, etc. The advantage of using polymer materials to prepare the shell is that the various components on the shell can be easily integrated with the shell, which greatly saves time and cost. For example, the support ribs, support positioning blocks, pole mounting parts, injection ports, discharge ports, liquid coolant injection ports, liquid coolant discharge ports, third electrode openings, reinforcing ribs, guide positioning parts, etc. can all be integrated with the lower shell. In addition, when the battery produces abnormal heat and gas, the polymer shell has a certain tensile deformation capacity, which simplifies the manufacturing process and reduces the risk of battery explosion.

[0016] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0017] The advantages of the utility model are:

[0018] 1) Polymer materials are used to make the shell of large-capacity lithium-ion batteries. Various opening components on the shell can be easily integrated with the shell, saving time and cost. When the battery produces abnormal heat and gas, the polymer shell has a certain stretching and deformation ability, reducing the risk of battery explosion;

[0019] 2) The solution of pre-installing components in the polymer shell simplifies the upper shell cover structure and the shell cover sealing process, which is convenient for improving battery assembly efficiency, eliminating expensive laser welding equipment and reducing manufacturing costs;

[0020] 3) The large surface of the battery cell is cooled internally to efficiently and quickly remove the internal heat of the battery, solving the problem of poor thermal conductivity of polymer shell batteries and difficulty in heat dissipation of the battery cell;

[0021] 4) The battery lugs and poles are connected by welding and then bending the connecting pieces, which can maximize the use of the internal space of the battery shell and improve the energy density of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 (a) and Figure 1 (b) are overall schematic diagrams of lithium slurry batteries;

[0023] Figure 2 A schematic diagram of a lower shell of a lithium slurry battery;

[0024] FIG3( a) and FIG3( b) are schematic diagrams of the liquid cooling pipe before and after being installed on the lower housing;

[0025] Figure 4 It is a schematic diagram of the installation of various components and the lower shell;

[0026] Figure 5 It is a cross-sectional schematic diagram of the lower shell accommodating the battery cell.

[0027] Reference numerals list

[0028] 1a——Upper shell cover

[0029] 1b - Lower housing

[0030] 101——First side wall

[0031] 102——Second side wall

[0032] 103——Third side wall

[0033] 104——Fourth side wall

[0034] 2——Battery Cell

[0035] 201——Ear connection piece

[0036] 3——Pole installation part

[0037] 301——Through hole

[0038] 302——Recessed part

[0039] 303 - The Bulge

[0040] 4——Injection port

[0041] 5——Liquid coolant filling port

[0042] 6——Liquid coolant drain port

[0043] 7——Third electrode opening

[0044] 8——Discharge outlet

[0045] 9——Support ribs

[0046] 10——Support positioning block

[0047] 11——Reinforcement

[0048] 12——Guide and positioning unit

[0049] 1201——Guide surface

[0050] 1202——Fixed surface

[0051] 1203——Support block

[0052] 13 - Liquid cooling tube

[0053] 1401——Pole body

[0054] 1402——Pole connecting piece

[0055] 15——Third electrode DETAILED DESCRIPTION

[0056] The present invention will be further described below through embodiments in conjunction with the accompanying drawings.

[0057] Fig. 1(a) and Fig. 1(b) are overall schematic diagrams of a lithium slurry battery. Fig. 1(a) shows a state where the upper shell cover and the lower shell are not connected, and Fig. 1(b) shows a state where the upper shell cover and the lower shell are sealed and connected. The outer shell of the lithium slurry battery includes an upper shell cover 1a and a lower shell 1b. The upper shell cover 1a is plate-shaped, and a reinforcing strip in the shape of a rectangular grid can be provided on the upper shell cover to strengthen the strength of the upper shell cover. The lower shell 1b includes a first side wall 101 and a second side wall 102 opposite to each other in front and back, a third side wall 103 and a fourth side wall 104 opposite to each other in left and right, and a bottom plate. The four edges of the upper shell cover 1a can be sealed and connected to the lower shell 1b.

[0058] Figure 2 Schematic diagram of the lower shell of a lithium slurry battery. In this embodiment, five pole mounting parts 3, an injection port 4, a liquid coolant injection port 5, a liquid coolant discharge port 6 and a third electrode opening 7 are provided on the first side wall of the lower shell, and five pole mounting parts 3 and a discharge port 8 are provided on the second side wall of the lower shell. The five pole mounting parts 3 on the first side wall can be used to install five positive poles, for example, and the five pole mounting parts 3 on the second side wall can be used to install five negative poles, for example, and the pole mounting parts located on the first side wall can be symmetrically arranged with the pole mounting parts located on the second side wall. The pole mounting part 3, the injection port 4, the discharge port 8, the liquid coolant injection port 5, the liquid coolant discharge port 6 and the third electrode opening 7 can be integrally formed with the lower shell, and the material can be, for example, polypropylene that is not corroded and dissolved by the electrolyte.

[0059] A plurality of parallel support ribs 9 extending in the width direction Y of the shell are provided on the upper surface of the bottom plate of the lower shell, and the support ribs 9 are spaced apart from each other. The length of the long support ribs 9 is less than the width of the shell, and a space is left between the end of the support ribs 9 and the side wall of the lower shell, in which a block-shaped support positioning block 10 can be provided. The support ribs 9 can be used to support the battery cells and can be used to install and position the straight part of the liquid cooling pipe, and the support positioning block 10 can also be used to support the battery cells and can be used to install and position the curved part of the liquid cooling pipe. The support ribs 9 and the support positioning block 10 can also be integrally formed with the lower shell.

[0060] A reinforcing rib 11 may be provided at the corner between the bottom plate and the side wall to strengthen the shell strength of the large shell. The reinforcing rib 11 may be in the shape of a strip or a block, and is arranged along the intersection of the bottom plate and the side wall. The reinforcing rib 11 may also be integrally formed with the lower shell.

[0061] Four guiding and positioning parts 12 are respectively arranged at the four corners of the side wall and the bottom plate of the lower shell. Each guiding and positioning part 12 is a long block structure extending along the height direction Z of the shell, and a side surface of each guiding and positioning part 12 for guiding and positioning is provided with a guiding surface 1201 located at the upper part and inclined toward the inside of the shell, and a vertical fixing surface 1202 located at the lower part. A support block 1203 may also be arranged at the bottom of the guiding and positioning part 12 to support the four corners of the battery cell. The guiding and positioning sides of the two guiding and positioning parts 12 arranged between the corner of the first side wall 101 and the adjacent third side wall 103 and between the corner of the second side wall 102 and the adjacent third side wall 103 are opposite, and the guiding and positioning sides of the two guiding and positioning parts 12 arranged between the corner of the first side wall 101 and the adjacent fourth side wall 104 and between the corner of the second side wall 102 and the adjacent fourth side wall 104 are opposite. When placing the battery cell into the lower housing, the battery cell first slides downward along the inclined guide surface 1201 at the upper part of the guide positioning side, and then falls onto the support rib 9 along the vertical fixing surface 1202 at the lower part of the guide positioning side. The fixing surface 1202 can prevent the battery cell from sliding in the lower housing, ensuring that its position is fixed. The guide positioning portion 12 can be used to smoothly place a large battery cell in the housing. The guide positioning portion 12 can be integrally formed with the lower housing.

[0062] FIG3(a) and FIG3(b) are schematic diagrams of the liquid cooling pipe before and after being installed to the lower shell. In the embodiment shown in FIG3(a) and FIG3(b), the liquid cooling agent injection port 5 and the liquid cooling agent discharge port 6 are arranged side by side on the first side wall 101 of the lower shell. One end of the liquid cooling pipe 13 is connected to the liquid cooling agent injection port 5, and the other end of the liquid cooling pipe 13 is connected to the liquid cooling agent discharge port 6, so that the liquid cooling agent enters the liquid cooling pipe 13 from the liquid cooling agent injection port 5, flows along the liquid cooling pipe 13 to the liquid cooling agent discharge port 6, and then is discharged from the liquid cooling agent discharge port 6. As shown in FIG3(a), the liquid cooling pipe 13 is arranged in a serpentine manner, and may include a straight portion and a curved portion, starting from the fourth side wall 104 on the side close to the liquid cooling agent injection port 5, for example, to meander toward the third side wall 103 opposite to the fourth side wall, and then to meander toward the fourth side wall 104 in a substantially parallel manner along the previously arranged liquid cooling pipe 13 from the third side wall 103. As shown in Figure 3(b), one end of the liquid cooling tube 13 is connected to the liquid coolant filling port 5 and the other end is connected to the liquid coolant discharge port 6. The straight portion of the liquid cooling tube 13 is arranged along the long support ribs 9, for example, it can be clamped between two adjacent support ribs 9 to keep it fixed. The curved portion of the liquid cooling tube 13 is sleeved on the support positioning block 10 to ensure the positioning and fixation of the curved portion.

[0063] Figure 4Schematic diagram of the installation of each component and the lower shell. The electrode column includes a pole body 1401 and a pole connecting piece 1402. The pole body 1401 includes a cylindrical column and a sheet-like substrate. The cylindrical column stands vertically on the sheet-like substrate. The cylindrical column and the substrate are integrally formed, and an external thread is provided on the cylindrical column. The bendable pole connecting piece 1402 is conductively connected to the sheet-like substrate. The pole mounting portion includes a through hole 301 for the cylindrical column to pass through, a recessed portion 302 located on the inner surface of the side wall and surrounding the through hole, and a protrusion 303 located on the outer surface of the side wall and surrounding the through hole. The cylindrical column of the pole body 1401 passes through the through hole 301, and the column and the through hole 301 are sealed by a sealing ring. The sheet-like substrate is embedded in the recessed portion 302 to make the inner surface of the lower shell flat. Tighten the nut and the cylindrical column at the position of the protrusion 303, and the protruding boss can play a role in strengthening the structure. The third electrode 15 may also include a column with external threads and a substrate. The column passes through the opening of the third electrode and is sealed by a sealing ring. The third electrode 15 is tightened by a nut.

[0064] Figure 5 The figure is a cross-sectional schematic diagram of the lower shell for accommodating the battery cell. The battery cell 2 is placed in the shell, and the battery cell 2 is provided with an electrode sheet and a tab connecting sheet 201. The electrode sheet is parallel to the bottom plate of the lower shell. The positive tab of the electrode sheet forms five positive tab clusters (not all of which are shown in the figure) and then extends vertically upward along the space between the side of the battery cell 2 and the first side wall of the lower shell. The five positive tab connecting sheets are respectively conductively connected to the five positive tab clusters; the negative tab of the electrode sheet forms five negative tab clusters (not all of which are shown in the figure) and then extends vertically upward along the space between the opposite side of the battery cell 2 and the second side wall of the lower shell. The five negative tab connecting sheets are respectively conductively connected to the five negative tab clusters. The positive pole column connecting sheet and the positive pole tab connecting sheet extending vertically upward are led to the outside of the lower shell from the space between the side of the battery cell and the first side wall of the lower shell, and the negative pole column connecting sheet and the negative pole tab connecting sheet extending vertically upward are led to the outside of the lower shell from the space between the opposite side of the battery cell and the second side wall of the lower shell. The pole connecting piece 1402 and the tab connecting piece 201 are welded on the outside of the lower shell. After the welding is completed, the upper parts of the pole connecting piece 1402 and the tab connecting piece 201 welded together are bent and placed into the lower shell.

[0065] The specific embodiments of the utility model are not intended to limit the utility model. Any technician familiar with the field can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the utility model without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A lithium slurry battery, characterized in that: The lithium slurry battery comprises a shell, a battery cell, an electrode column and a liquid cooling tube, wherein the battery cell is placed in the shell, and the battery cell is provided with an electrode sheet and a tab connecting sheet, wherein the electrode sheet is placed in the shell in a horizontal manner, and the tabs of the electrode sheet form tab clusters and extend vertically upward along the space between the side of the battery cell and the shell, wherein the tab connecting sheet is conductively connected to the tab cluster, wherein the electrode column comprises a pole column body and a pole column connecting sheet, wherein the pole column connecting sheet is conductively connected to the pole column body, and wherein the tab connecting sheet is welded to the pole column connecting sheet, wherein the length of the shell is 300 mm to 1500 mm, and the width is The outer shell is 200mm~500mm in width and 50mm~200mm in height, the outer shell comprises an upper shell cover and a lower shell, the lower shell comprises four integrally formed side walls and a bottom plate, the four side walls comprise a first side wall and a second side wall arranged opposite to each other and a third side wall and a fourth side wall arranged opposite to each other, a liquid coolant injection port and a liquid coolant discharge port are arranged on the side walls, a plurality of support ribs spaced apart from each other are arranged on the upper surface of the bottom plate of the lower shell, the liquid cooling pipes are arranged along the gaps between adjacent support ribs, the liquid cooling pipes are respectively in fluid communication with the liquid coolant injection port and the liquid coolant discharge port, and the battery cells are placed on the support ribs.

2. The lithium slurry battery according to claim 1, characterized in that: The multiple support ribs are arranged in parallel, and there is a space between the ends of the support ribs and the side walls of the lower shell, and the liquid cooling pipe is arranged in a serpentine shape around the multiple support ribs; or, the liquid cooling pipe includes a main liquid cooling pipe and a branch liquid cooling pipe, the main liquid cooling pipe is located in the space between the ends of the support ribs and the side walls of the lower shell, and the branch liquid cooling pipe is arranged in parallel along the support ribs.

3. The lithium slurry battery according to claim 2, characterized in that: A plurality of support and positioning blocks are also provided on the upper surface of the bottom plate of the lower shell, and the positions of the support and positioning blocks are relative to the positions of the curved portions of the serpentine-arranged liquid cooling tubes so as to position the curved portions of the liquid cooling tubes, and the support and positioning blocks can support the battery cells placed thereon.

4. The lithium slurry battery according to claim 1, characterized in that: 2 to 10 pole mounting parts are respectively provided on the first side wall and the second side wall of the lower shell, the pole body includes a cylindrical column and a sheet-like substrate, the cylindrical column stands vertically on the sheet-like substrate, the end face of the cylindrical column is fixedly connected to the substrate or the cylindrical column and the substrate are integrally formed, the pole mounting part includes a through hole for the cylindrical column to pass through, a recessed part located on the inner surface of the side wall and surrounding the through hole, and a protrusion located on the outer surface of the side wall and surrounding the through hole, the substrate can be embedded in the recessed part to make the inner surface of the side wall flat, and the protrusion is used to enhance the connection strength of the electrode column.

5. The lithium slurry battery according to claim 4, characterized in that: Five pole mounting parts are respectively provided on the first side wall and the second side wall of the lower shell.

6. The lithium slurry battery according to claim 4, characterized in that: An injection port for injecting electrolyte or safety agent is provided on the first side wall of the lower shell, and an outlet for discharging electrolyte or safety agent is provided on the second side wall of the lower shell. The injection port and the outlet are tubular components with internal threads.

7. The lithium slurry battery according to claim 6, characterized in that: The lithium slurry battery is provided with a third electrode, the pole of the third electrode is conductively connected to the pole lug of the battery cell, and a third electrode opening is provided on the first side wall or the second side wall of the lower shell, and the pole of the third electrode can pass through the third electrode opening.

8. The lithium slurry battery according to claim 1, characterized in that: Guide positioning parts are respectively arranged at the four corners where the four side walls in the lower shell intersect, and the guide positioning parts include a guide surface inclined toward the inside of the lower shell and a vertical fixing surface. The four guide positioning parts are opposite to each other in pairs, so that the guide surface and the fixing surface of two opposite guide positioning parts are respectively opposite, the inclined guide surface is used to guide the battery cell to enter the lower shell, and the vertical fixing surface is used to fix the battery cell entering the lower shell.

9. The lithium slurry battery according to claim 1, characterized in that: Reinforcing ribs are arranged at the positions where the four side walls in the lower shell intersect with the bottom plate to enhance the strength of the lower shell.

10. The lithium slurry battery according to claim 1, characterized in that: The upper part of the pole connecting piece of the electrode column can be bent, and the upper part of the pole tab connecting piece of the battery cell can be bent. After the upper part of the pole connecting piece and the upper part of the pole tab connecting piece are welded to the outside of the lower shell, they are bent downward and placed in the lower shell; or, the lower part of the pole connecting piece of the electrode column can be bent, and the lower part of the pole connecting piece is bent upward and then welded to the upper part of the pole tab connecting piece.

11. The lithium slurry battery according to claim 1, characterized in that: The upper shell cover is a plate-shaped structure, and is provided with crisscross reinforcement strips. The edges around the upper shell cover are sealed and connected to the lower shell.

12. The lithium slurry battery according to claim 1, characterized in that: The shell is made of a polymer material that is not corroded or dissolved by the electrolyte, and the polymer material is polypropylene, polyethylene, polyphenylene sulfide or polytetrafluoroethylene.

13. The lithium slurry battery according to claim 7, characterized in that: The supporting rib, the pole mounting portion, the injection port, the discharge port, the liquid coolant injection port, the liquid coolant discharge port, and the third electrode opening are integrally formed with the lower shell.

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