CN210668537U

CN210668537U - Electrode

Info

Publication number: CN210668537U
Application number: CN201921861527.8U
Authority: CN
Inventors: 汪小知; 徐成功; 代晒
Original assignee: Suzhou Weimu Intelligent System Co ltd
Current assignee: Suzhou Weimu Intelligent System Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-06-02
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses an electrode. The utility model comprises an electrode component and a pole ear; the electrode assembly comprises a positive electrode, a negative electrode and a diaphragm which are arranged in a laminated mode, one end of the electrode assembly is a fixed end, the other end of the electrode assembly is a movable end, the fixed end is used as a central axis, and the movable end is wound around the fixed end in a rotating mode for at least one circle to form a cylindrical or square structure; the tabs comprise a positive tab and a negative tab which are respectively arranged at two ends of the electrode assembly on the central axis, the positive tab is electrically connected with the positive electrode of the electrode assembly, and the negative tab is electrically connected with the negative electrode of the electrode assembly. The utility model discloses the optimization of the structure of diaphragm in the electrode subassembly can improve the stability when making the use, improves the quality of the battery of making.

Description

Electrode

Technical Field

The utility model relates to a battery field, concretely relates to electrode.

Background

With the continuous development of electronic and energy technologies, the whole society is on CO₂And the attention on the emission of automobile exhaust is continuously increased, and the electric automobile becomes the development trend in the future. The lithium battery is used as a core component of the electric automobile and has great market demand and development due to the main technical bottleneck, the market demand of the lithium battery in 2016 reaches 45.33GWh, the quantity of the lithium battery exceeds 700 hundred million RMB, and the annual growth rate is more than 30%. However, the current domestic situation is that the overall yield of the lithium battery is continuously improved to meet the demand gap, but the quality of the lithium battery is still different from the foreign advanced manufacturing level.

The conventional lithium battery electrode is generally led out by a tab method, and in the prior art, the tab is generally welded on the electrode by adopting a corresponding metal material, so that current is output or input. For an electric automobile, different arrangement modes have great influence on use stability, internal resistance and charge-discharge multiplying power, particularly for increasing the charge-discharge multiplying power, the positive electrode and the negative electrode adopt multilayer metal foils, and when a film arranged between the positive electrode and the negative electrode is used for separating, the conventional lug arrangement mode easily causes the contact between the positive electrode and the negative electrode to influence the use stability, and the manufactured battery quality is greatly influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the main technical problem who solves lies in: the conventional tab arrangement mode in the prior art easily causes the defect that the contact between the positive electrode and the negative electrode further affects the quality of the battery, thereby providing an electrode for solving the problems.

An electrode, comprising:

the electrode assembly comprises a positive electrode, a negative electrode and a diaphragm which are arranged in a stacked mode, one end of the electrode assembly is a fixed end, the other end of the electrode assembly is a movable end, the fixed end is used as a central axis, and the movable end is wound around the fixed end in a rotating mode for at least one circle to form a cylindrical or square structure;

the tabs comprise a positive tab and a negative tab which are respectively arranged at two ends of the electrode assembly on the central axis, the positive tab is electrically connected with a positive electrode of the electrode assembly, and the negative tab is electrically connected with a negative electrode of the electrode assembly;

the section of the diaphragm along the direction of the central axis is U-shaped, and the end part of one side of the notch of the diaphragm is also provided with an isolation section extending towards the direction far away from the notch; one of the positive electrode and the negative electrode is arranged in the groove of the diaphragm, and the rest positive electrode or the rest negative electrode is arranged on the side surface of the side outside the groove of the diaphragm, which is provided with the isolation section;

the positive electrode or the negative electrode in the diaphragm groove extends out of the notch to be electrically connected with the corresponding tab, one end of the positive electrode or the negative electrode outside the diaphragm groove is contacted with the isolation section, and the other end of the positive electrode or the negative electrode extends out of the diaphragm towards the direction far away from the isolation section to be electrically connected with the corresponding tab.

The utility model discloses still include middle separator, the axis and the central axis coincidence of middle separator, electrode subassembly's stiff end connect in on the middle separator, electrode subassembly's expansion end makes electrode subassembly twine on middle separator around the last round at least of middle separator, and the isolated section is located the one side of being close to middle separator.

The positive electrode lug and the negative electrode lug both comprise annular parts and electric communication pieces fixed on the annular parts; the intermediate separator ends are passed through ring members to secure the respective tabs to the intermediate separator.

An electric conducting piece which is arranged along the central axis of the middle separator and penetrates through the middle separator is arranged in the middle separator, and one end part of the electric conducting piece is electrically connected with the positive pole lug or the negative pole lug.

The middle isolating piece is of a cylindrical structure or a square sheet structure.

One end of the isolation section is fixed on the diaphragm, the other end of the isolation section is a free end, and the free end is further provided with a separation section which extends towards the direction far away from the notch along the central axis of the middle isolation piece.

And conductive coatings are arranged on the positive electrode and the negative electrode.

The conductive coating is a carbon nano coating.

The utility model discloses technical scheme has following advantage:

1. the utility model discloses an electrode subassembly structure optimization, especially electrode subassembly median septum structure optimization and the cooperation of isolated segment, effectively avoid the contact between the positive negative electrode or with the contact between positive negative electrode and the utmost point ear of different grade type, be applicable to effectively that the setting of multilayer positive negative pole electrode structure improves the stability of using under the condition of improving battery charge-discharge rate; specifically, through the arrangement of the U-shaped diaphragm, one type of electrode is arranged in the U-shaped groove of the U-shaped diaphragm, the other type of electrode is arranged outside the U-shaped groove, and the electrodes outside the groove are matched through the isolation section, so that the purpose of separating the positive electrode from the negative electrode is realized, and the separated electrodes avoid the possibility of mutual contact; meanwhile, the mode that the positive electrode lug and the negative electrode lug are respectively arranged at the two ends is adopted, so that the contact between the positive electrode lug and the negative electrode lug or the contact between the positive electrode lug and the negative electrode and the contact between the negative electrode lug and the positive electrode are avoided, and the isolation effect is effectively achieved; under the optimization of the structure, no matter what type of arrangement mode of the electrode tabs, the isolation among the positive electrode, the negative electrode and the negative electrode tab and the isolation among the negative electrode, the positive electrode and the positive electrode tab can be effectively realized, the battery pack is suitable for batteries with high charge-discharge rate requirements of electric automobiles, the stability during manufacturing and use is greatly improved, and the quality of the manufactured batteries is improved.

2. The utility model discloses a spacer and optimization utmost point ear structure's the mode of setting in the middle of increasing, promptly, adopt the ring-shaped piece and the mode of setting that the combination of electric continuity piece constitutes through utmost point ear, can make the electric continuity piece compress tightly on electrode subassembly with corresponding electrode contact, if: after the lugs are fixed on the middle separator by adopting the ring-shaped piece, the electric connection piece of the positive lug can be effectively contacted with the positive electrode to realize electric connection, and the electric connection piece of the negative lug can be effectively contacted with the negative electrode to realize electric connection; and, through the utility model discloses the optimization setting of structure, the manufacturing of the electrode of this battery is simpler, simplifies the flow technology of preparation, reduction in production cost.

3. The utility model can facilitate the addition of the electric conducting piece by optimizing the structure of the tab and combining the arrangement of the middle isolating piece, and when the electric conducting piece is not added, the anode and the cathode of the battery can be respectively arranged at the two opposite sides of the battery; when the electric conducting piece is additionally arranged, the anode and the cathode can be simultaneously arranged on one side of the battery, so that the types of the battery in the later period are effectively increased, and the application range is enlarged. Meanwhile, the optimized setting of the middle spacer structure can be suitable for the setting of batteries with different shapes, if the middle spacer structure is set to be circular, the middle spacer structure is suitable for the preparation of circular batteries, and if the middle spacer structure is optimized to be square sheets, the middle spacer structure is suitable for the preparation of square batteries, so that the application range is further enlarged.

4. The utility model discloses the increase setting of well segmentation has not only further avoided the crisscross contact problem between positive negative electrode and the electrode utmost point ear better to still form certain clearance between the positive negative electrode, the packing of electrolyte when being convenient for battery preparation, and going on smoothly of charge-discharge.

5. The utility model discloses in all be provided with conductive coating on positive and negative electrode, through conductive coating's setting, effectively reduce the polarization effect of battery under the high charge-discharge condition, improve the energy density of whole battery and the uniformity in the manufacturing, lay solid basis for further improving internal battery trade manufacture level.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the longitudinal structure of the present invention.

Fig. 2 is a schematic view of the overall square transverse structure of the present invention.

Fig. 3 is a schematic view of the overall transverse structure of the circular device of the present invention.

Fig. 4 is a schematic structural view of the electrode assembly of the present invention before it is wound around the intermediate separator.

Fig. 5 is a schematic structural view of the middle tab of the present invention.

Description of reference numerals:

1-an intermediate spacer; 2-an electrode assembly; 3, pole ear; 4-an electrical conductor;

21-a positive electrode; 22-a negative electrode; 23-a membrane; 24-an isolation section; 25-a separation section;

31-an annulus; 32-electrical connection pads.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

An electrode, as shown in fig. 1, includes an electrode assembly 2 and tabs 3. The electrode assembly 2 includes a positive electrode 21, a negative electrode 22 and a separator 23, which are stacked, one end of the electrode assembly 2 is a fixed end, the other end is a movable end, the fixed end is a central axis, and the movable end is wound around the fixed end for at least one turn to form a cylindrical or square structure. The tabs 3 include a positive tab and a negative tab, which are respectively disposed at two ends of the electrode assembly 2 on the central axis, the positive tab is electrically connected to a positive electrode 21 of the electrode assembly 2, and the negative tab is electrically connected to a negative electrode 22 of the electrode assembly 2. The section of the diaphragm 23 along the direction of the central axis is U-shaped, and the end part of one side of the notch of the diaphragm 23 is also provided with an isolation section 24 extending towards the direction far away from the notch; one of the positive electrode 21 and the negative electrode 22 is disposed in the groove of the separator 23, and the remaining positive electrode 21 or negative electrode 22 is disposed outside the groove of the separator 23 on the side surface having the separator 24. The positive electrode 21 or the negative electrode 22 in the groove of the separator 23 extends out of the notch to be electrically connected with the corresponding tab 3, one end of the positive electrode 21 or the negative electrode 22 outside the groove of the separator 23 is contacted with the isolating section 24, and the other end of the positive electrode 21 or the negative electrode 22 extends out of the separator 23 towards the direction far away from the isolating section 24 to be electrically connected with the corresponding tab 3.

The utility model discloses in, this diaphragm 23, isolation section 24, positive electrode 21 and negative electrode 22 are the sheet structure of rectangular shape, and diaphragm 23 includes last piece, lower piece and connection piece, and the piece is connected to the connection piece and is gone up the piece and lower piece to the diaphragm 23 that the cross-section is "U" style of calligraphy is constituteed jointly with last piece and lower piece to the connection piece.

When the positive electrode 21 is arranged in the groove of the diaphragm 23, the upper piece of the diaphragm 23, the positive electrode 21, the lower piece of the diaphragm 23 and the negative electrode 22 are arranged from top to bottom in sequence, the isolating section 24 is positioned at one end, adjacent to the notch, of the lower piece of the diaphragm 23, the bottom end of the positive electrode 21 is close to the connecting piece at the bottom of the diaphragm 23, the top end of the positive electrode 21 extends out of the notch of the diaphragm 23, one end of the negative electrode 22 is close to the isolating section 24, and the other end, far away from the isolating section 24, of the negative. When the negative electrode 22 is disposed in the groove of the separator 23, the upper piece of the separator 23, the negative electrode 22, the lower piece of the separator 23, and the positive electrode 21 are sequentially disposed from top to bottom, the isolation section 24 is disposed at one end of the lower piece of the separator 23 adjacent to the opening of the groove, the bottom end of the negative electrode 22 is close to the connecting piece at the bottom of the groove of the separator 23, the top end of the negative electrode 22 extends out of the notch of the separator 23, one end of the positive electrode 21 is close to the isolation section 24, and one end of the positive electrode 21, which is far away.

Only need form cylindrical or square structure with 2 expansion ends of electrode subassembly around the rotatory at least rounds of winding of stiff end, then with anodal utmost point ear and negative pole utmost point ear install respectively at the both ends of electrode subassembly 2 can, the utility model discloses in line between this anodal utmost point ear and the negative pole utmost point ear is parallel with the central axis, can effectively contact positive electrode 21 and anodal utmost point ear, negative electrode 22 and negative pole utmost point ear through this setting, and then realize positive electrode 21 and anodal utmost point ear to and the electricity between negative electrode 22 and the negative pole utmost point ear is connected.

Through the optimization of the structure of the electrode assembly 2, particularly the optimization of the structure of the diaphragm 23 in the electrode assembly 2 and the matching of the isolation section 24, the contact between positive and negative electrodes or the contact between the positive and negative electrodes and different types of tabs is effectively avoided, the structure is effectively suitable for the arrangement of a multi-layer positive and negative electrode structure, and the use stability is improved under the condition of improving the charge and discharge multiplying power of the battery; specifically, through the arrangement of the U-shaped diaphragm 23, one type of electrode is arranged in the U-shaped groove of the U-shaped diaphragm 23, the other type of electrode is arranged outside the U-shaped groove, and the electrodes outside the groove are matched through the isolation section 24, so that the purpose of separating the positive electrode from the negative electrode is realized, and the separated electrodes avoid the possibility of mutual contact; meanwhile, the mode that the positive electrode lug and the negative electrode lug are respectively arranged at the two ends avoids the contact between the positive electrode lug and the negative electrode lug, or the contact between the positive electrode lug and the negative electrode 22 and the contact between the negative electrode lug and the positive electrode 21, thereby effectively achieving the effect of isolation; under the optimization of the structure, no matter what arrangement mode of the electrode tabs, the isolation between the positive electrode 21 and the negative electrode 22 and between the negative electrode 22 and the positive electrode 21 can be effectively realized, the isolation is suitable for batteries with high charge-discharge rate requirements of electric automobiles, the use stability is greatly improved, and the manufactured battery quality is improved.

The utility model discloses in still including middle separator 1. Specifically, the electrode assembly 2 of the present invention includes a positive electrode 21, a negative electrode 22, and a separator 23, which are stacked, and a separator 24 disposed on the separator 23. The fixed end of the electrode assembly 2 is coupled to the intermediate separator 1, and the movable end is wound at least one turn around the central axis of the intermediate separator 1 so that the electrode assembly 2 is wound around the intermediate separator 1, as shown in fig. 2 or 3. The tabs 3 include a positive tab and a negative tab, which are respectively disposed at two ends of the intermediate separator 1, the positive tab is connected to the positive electrode 21, and the negative tab is connected to the negative electrode 22, as shown in fig. 1. The section of the separator 23 along the central axis direction of the intermediate separator 1 is U-shaped, as shown in fig. 4, one of the positive electrode 21 and the negative electrode 22 is disposed in the groove of the separator 23, and the remaining positive electrode 21 or negative electrode 22 is disposed between the intermediate separator 1 and the separator 23; the end of the opening of the diaphragm 23 adjacent to one side of the intermediate separator 1 is provided with an isolation section 24 extending towards one side of the intermediate separator 1; the positive electrode 21 or the negative electrode 22 in the groove of the separator 23 extends out of the groove to be connected with the corresponding tab 3, one end of the positive electrode 21 or the negative electrode 22 outside the groove of the separator 23 is contacted with the isolating section 24, and the other end extends out of the separator 23 towards the direction far away from the isolating section 24 to be connected with the corresponding tab 3.

In the present invention, when the positive electrode 21 is disposed in the groove of the separator 23, one side of the negative electrode 22 is tightly attached to the separator 23, and the other side of the negative electrode 22 is disposed with the intermediate separator 1, as shown in fig. 4, the intermediate separator 1 is disposed at the end of the side of the negative electrode 22, and the electrode assembly 2 is wound around the intermediate separator 1, so as to wrap the electrode assembly 2 on the intermediate separator 1 to form a cylindrical or square structure, as shown in fig. 2 or fig. 3; at the moment, a positive electrode tab is arranged on one side of the notch of the diaphragm 23, the isolating section 24 isolates the positive electrode tab from the negative electrode 22, and the positive electrode tab is electrically connected with the positive electrode 21 extending out of the notch; the negative tab is then secured to the side of the negative electrode 22 extending out of the separator 23 and is electrically connected to the negative electrode 22, as shown in fig. 1. When the negative electrode 22 is arranged in the groove of the diaphragm 23, one side surface of the positive electrode 21 is tightly attached to the diaphragm 23, the other side surface of the positive electrode 21 is provided with the intermediate separator 1, the intermediate separator 1 is arranged at the end part of the side surface of the positive electrode 21, the electrode assembly 2 is wound around the intermediate separator 1, the electrode assembly 2 is wrapped on the intermediate separator 1 to form a cylindrical or square structure, at the moment, a negative electrode tab is fixed on one side of the notch of the diaphragm 23, the isolating section 24 isolates the negative electrode tab from the positive electrode 21, and the negative electrode tab is electrically connected with the negative electrode 22 extending out of the notch; and the positive electrode tab is fixed on one side of the positive electrode 21 extending out of the diaphragm 23 and is electrically connected with the positive electrode 21.

The utility model discloses in this utmost point ear 3 includes anodal utmost point ear and negative pole utmost point ear, structure between them can be the same also can be different, as long as fix respectively in the both ends of middle separator and be connected with positive electrode 21 and negative electrode 22 electricity respectively can. In the embodiment, the positive electrode tab and the negative electrode tab are arranged in the same structure, and each of the positive electrode tab and the negative electrode tab comprises an annular member 31 and an electric communication piece 32 fixed on the annular member 31; the intermediate separator 1 is passed at its ends through the ring members 31 to fix the respective tabs 3 to the intermediate separator 1, as shown in fig. 5. Can make electric intercommunication piece 32 compress tightly on electrode subassembly 2 with corresponding electrode contact through this structure, can effectively realize the electricity with positive electrode 21 contact and be connected like the electric intercommunication piece 32 of positive pole utmost point ear, the electric intercommunication piece 32 of negative pole utmost point ear can effectively realize the electricity with negative electrode 22 contact and be connected, this setting need not to carry out welding operation between utmost point ear and the electrode, reduce the internal resistance that the solder joint caused, simultaneously, because electric intercommunication piece 32 is sheet structure, can effectively realize forming more contact points between utmost point ear and the corresponding electrode, under the condition that reduces the internal resistance, effectively increase charge-discharge multiplying power.

The utility model discloses in, through the optimization setting of middle separator 1, can be applicable to the formation of the electrode of different shapes, and then be applicable to the preparation of the battery of different shapes and different electric currents extraction direction, effectively increase the utility model discloses an application scope. Particularly, through the optimization of the structure of the lug and the arrangement of the intermediate isolating piece, the convenience can be provided for additionally arranging the electric conducting piece 4; namely, the intermediate separator 1 is internally provided with an electric conductor 4 which is arranged along the axis of the intermediate separator 1 and penetrates through the intermediate separator 1, and one end part of the electric conductor 4 is electrically connected with a positive electrode lug or a negative electrode lug; by adopting the structure, the same-side leading-out of the current anode and the current cathode can be realized, and when the electric conducting piece 4 is not used, the different-side leading-out of the current anode and the current cathode can be realized. Meanwhile, when the intermediate separator 1 is arranged in a cylindrical structure, a cylindrical electrode can be prepared, so that the intermediate separator is suitable for production and manufacturing of cylindrical batteries; when the intermediate separator 1 is in a square sheet structure, a square electrode can be prepared, and the method is further suitable for production and manufacturing of square batteries.

In order to better add the electrolyte between the positive electrode 21 and the negative electrode 22 when the battery is prepared, a separation section 25 is connected to the free end of the separation section 24, and the separation section 25 is arranged in parallel with the positive electrode 21 or the negative electrode 22. Specifically, one end of the isolation section 24 is fixed on the diaphragm 23, and the other end of the isolation section 24 is a free end, and the free end is further provided with a separation section 25 extending along the central axis of the intermediate isolation member 1 in a direction away from the groove opening.

In order to effectively reduce the polarization effect of the battery under the condition of high charge and discharge and improve the energy density and the manufacturing consistency of the whole battery, a solid foundation is laid for further improving the manufacturing level of the domestic battery industry. And conductive coatings are arranged on the positive electrode 21 and the negative electrode 22 and are carbon nano coatings.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. An electrode, comprising:

the electrode assembly (2) comprises a positive electrode (21), a negative electrode (22) and a diaphragm (23) which are arranged in a stacked mode, one end of the electrode assembly (2) is a fixed end, the other end of the electrode assembly is a movable end, the fixed end is used as a central axis, and the movable end is wound around the fixed end for at least one circle to form a cylindrical or square structure;

the tabs (3) comprise a positive tab and a negative tab and are respectively arranged at two ends of the electrode assembly (2) on the central axis, the positive tab is electrically connected with a positive electrode (21) of the electrode assembly (2), and the negative tab is electrically connected with a negative electrode (22) of the electrode assembly (2);

the section of the diaphragm (23) along the direction of the central axis is U-shaped, and the end part of one side of the notch of the diaphragm (23) is also provided with an isolation section (24) extending towards the direction far away from the notch; one of the positive electrode (21) and the negative electrode (22) is arranged in the groove of the diaphragm (23), and the rest of the positive electrode (21) or the negative electrode (22) is arranged on the side surface of the diaphragm (23) with the isolating section (24) outside the groove;

the positive electrode (21) or the negative electrode (22) in the groove of the diaphragm (23) extends out of the notch to be electrically connected with the corresponding tab (3), one end of the positive electrode (21) or the negative electrode (22) outside the groove of the diaphragm (23) is contacted with the isolation section (24), and the other end of the positive electrode (21) or the negative electrode (22) extends out of the diaphragm (23) towards the direction far away from the isolation section (24) to be electrically connected with the corresponding tab (3).

2. An electrode according to claim 1, further comprising an intermediate separator (1), wherein the central axis of the intermediate separator (1) coincides with the central axis, the fixed end of the electrode assembly (2) is connected to the intermediate separator (1), the movable end of the electrode assembly (2) winds the electrode assembly (2) around the intermediate separator (1) for at least one turn, and the separator (24) is located at a side close to the intermediate separator (1).

3. An electrode according to claim 2, wherein each of the positive and negative electrode tabs comprises an annular member (31), and an electrical communication piece (32) fixed to the annular member (31); the end part of the intermediate spacer (1) penetrates through a ring-shaped piece (31) so as to fix the tab (3) on the intermediate spacer (1).

4. An electrode according to claim 2, characterized in that the intermediate separator (1) is internally provided with an electrical conductor (4) which is arranged along the central axis of the intermediate separator (1) and penetrates through the intermediate separator (1), and one end of the electrical conductor (4) is electrically connected with the positive electrode tab or the negative electrode tab.

5. An electrode according to claim 2, characterized in that the intermediate separator (1) is of cylindrical or square sheet-like configuration.

6. An electrode according to any of claims 2-5, characterized in that one end of the spacer (24) is fixed to the membrane (23), and the other end of the spacer (24) is a free end, and that the free end is provided with a spacer (25) extending away from the notch along the central axis of the intermediate spacer (1).

7. An electrode according to any of claims 1-5, characterized in that the positive electrode (21) and the negative electrode (22) are provided with an electrically conductive coating.

8. An electrode according to claim 7, wherein the conductive coating is a carbon nanocoating.