Current collecting plate assembly, battery and electric equipment

Abstract

The utility model discloses a current collector plate assembly, battery and electric equipment, the current collector plate assembly includes: current collector plate and current guide piece, current guide piece includes: pole column current guide part and a plurality of current collector plate current guide part, the first end of a plurality of current collector plate current guide part is electrically connected to the current collector plate, the second end of a plurality of current collector plate current guide part is electrically connected to the pole column current guide part, and the pole column current guide part is electrically connected to the pole column current guide part. And the pole diversion part is suitable for being electrically connected with the pole. Therefore, the collector plate assembly can realize bidirectional or multidirectional diversion, so that the high-rate battery performance can be realized.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a current collector assembly, a battery, and an electrical device. Background Technology

[0002] In existing technologies, the current flow path between the current collector and the terminal in a battery is relatively simple, resulting in poor current carrying capacity of the cell. When a problem occurs in the single current path, it can lead to a short circuit in the battery, and it is also difficult to achieve high-rate charge and discharge performance. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a current collector assembly for a battery that can achieve bidirectional or multidirectional current conduction, thereby enabling high-rate battery performance.

[0004] This utility model further proposes a battery.

[0005] This utility model also proposes an electrical device.

[0006] According to a first aspect of the present invention, a collector plate assembly includes: a collector plate; a guide member, the guide member including a pole guide portion and a plurality of collector plate guide portions, a first end of the plurality of collector plate guide portions being electrically connected to the collector plate, a second end of the plurality of collector plate guide portions being electrically connected to the pole guide portion, and the pole guide portion being adapted to be electrically connected to the pole.

[0007] Therefore, the current collector assembly can achieve bidirectional or multidirectional current flow, thereby enabling high-rate battery performance.

[0008] According to some embodiments of the present invention, the angle between the thickness direction of the pole guide portion and the thickness direction of the collector assembly is in the range of [0°, 60°].

[0009] According to some embodiments of the present invention, the second ends of a plurality of the collector guide portions are spaced apart on the pole guide portions.

[0010] According to some embodiments of this utility model, the number of the flow guide parts of the flow collecting plate is two, and the two flow guide parts of the flow collecting plate are arranged opposite to each other; or the number of the flow guide parts of the flow collecting plate is four, with two flow guide parts of the flow collecting plate arranged opposite to each other, and the other two flow guide parts of the flow collecting plate are also arranged opposite to each other.

[0011] According to some embodiments of the present invention, the pole guide portion protrudes in a direction away from the multiple collector plate guide portions relative to the collector plate.

[0012] According to some embodiments of the present invention, the flow guide further includes: a plurality of transition portions, the two ends of which are respectively connected to the flow guide portion of the collector plate and the flow guide portion of the pole post, so that the flow guide portion of the collector plate and the flow guide portion of the pole post are electrically connected.

[0013] According to some embodiments of the present invention, in the direction of the thickness of the collector plate, the distance from the end where the transition portion and the pole guide portion are connected to the collector plate is greater than the distance from the end where the transition portion and the collector plate guide portion are connected to the collector plate.

[0014] According to some embodiments of the present invention, the vertical distance from the transition portion to the central axis of the pole guide portion increases in the direction close to the collector plate.

[0015] According to some embodiments of the present invention, at least a portion of the flow guide portion of the flow collector is in contact with the surface of the flow collector.

[0016] According to some embodiments of the present invention, at least a portion of the flow guide portion of the flow collector is welded to the flow collector.

[0017] According to some embodiments of the present invention, the electrode guide portion is provided with a first liquid passage hole, which is disposed through the electrode guide portion along the thickness direction; and / or the collector plate is provided with a plurality of second liquid passage holes, which are disposed through the collector plate along the thickness direction, and the plurality of second liquid passage holes are disposed at intervals on the collector plate.

[0018] According to some embodiments of the present invention, the outer peripheral edge of the collector plate is provided with a first flange. The first flange is bent relative to the side of the collector plate facing the guide member. The first flange is located on the side of the guide portion of the collector plate away from the pole guide portion, so as to limit the guide portion of the collector plate.

[0019] According to some embodiments of the present invention, in the thickness direction of the collector plate, the height of the first flange is h, and h satisfies the relationship: 0.3mm≤h≤2mm.

[0020] According to some embodiments of the present invention, the current collector is provided with at least one connecting portion, the connecting portion protruding along the thickness direction of the current collector in a direction away from the current guide, and the connecting portion is used for electrical connection with the battery cell.

[0021] According to some embodiments of the present invention, in the thickness direction of the collecting disk, the orthographic projection of the guiding portion of the collecting disk and the orthographic projection of the connecting portion are at least partially misaligned.

[0022] According to some embodiments of the present invention, there are multiple connecting parts, and the multiple connecting parts are spaced apart on the collector plate, with at least a portion of the collector plate guide portion located between two adjacent connecting parts.

[0023] According to some embodiments of this utility model, the guide component is an integrally formed metal structural component.

[0024] According to some embodiments of this utility model, the guide component is an integrally formed copper or stainless steel component.

[0025] A battery according to a second aspect of the present invention includes: a housing having a receiving cavity and a through hole; a battery cell housed in the receiving cavity; a terminal post passing through the through hole; and a current collector assembly housed in the receiving cavity, wherein the current collector is electrically connected to the terminal post guide portion and the current collector is electrically connected to the battery cell.

[0026] According to some embodiments of the present invention, the outer shell includes a housing and a cover plate, the housing has an opening, the cover plate seals the opening, and the through hole is provided in the cover plate.

[0027] According to some embodiments of the present invention, the cover plate or the pole is provided with an injection hole, and the pole guide portion is provided with a first liquid passage hole. In the thickness direction of the collecting plate, the orthographic projection of the first liquid passage hole and the orthographic projection of the injection hole at least partially overlap.

[0028] According to some embodiments of this utility model, the first liquid passage and the liquid injection hole are coaxially arranged.

[0029] According to some embodiments of the present invention, the cover plate is provided with the liquid injection hole, the liquid injection hole and the through hole are spaced apart, and the battery further includes a sealing cap, the sealing cap is disposed on the cover plate and covers the liquid injection hole.

[0030] According to some embodiments of the present invention, the battery further includes a sealing member, which is disposed at the injection hole and seals the injection hole.

[0031] According to some embodiments of the present invention, the battery further includes an insulating member, which abuts between the terminal post and the cover plate to insulate and seal the terminal post and the cover plate.

[0032] According to some embodiments of the present invention, the electrode post includes a bottom wall, and the bottom wall is electrically connected to the electrode post guide portion.

[0033] According to some embodiments of this utility model, the bottom wall and the polar guide portion are in surface-to-surface contact.

[0034] According to some embodiments of the present invention, the electrode post includes: an electrode body, which is inserted into the through hole and forms a cavity with an opening; and an electrode cover, which is disposed on the electrode body and closes the opening.

[0035] According to some embodiments of this utility model, the pole piece includes: a first pole piece, the first pole piece passing through the through hole, the first pole piece including a bottom wall, a cylinder and a first overlapping portion, the bottom wall being disposed at the bottom of the cylinder and forming the cavity with the cylinder, the first overlapping portion being disposed at the top of the cylinder and on the outer peripheral wall of the cylinder; a second pole piece, the second pole piece being wrapped around the outer peripheral wall of the cylinder, and the second pole piece including a second overlapping portion corresponding to the first overlapping portion, the first overlapping portion and the second overlapping portion overlapping and cooperating to fix the first pole piece and the second pole piece together; in the thickness direction of the collector plate, the second pole piece includes the opening away from the collector plate relative to the first pole piece, the pole piece cover and the second pole piece being fixedly connected to close the opening.

[0036] According to some embodiments of the present invention, the electrode guide portion is provided with a first liquid passage hole, and the bottom wall is provided with a liquid injection hole, wherein the first liquid passage hole and the liquid injection hole are arranged opposite to each other.

[0037] According to some embodiments of the present invention, the pole post includes a bottom wall, and the orthographic projection of the bottom wall covers the orthographic projection of the through hole in the thickness direction of the collector plate.

[0038] According to some embodiments of the present invention, the outer shell is provided with an explosion-proof valve, and the explosion-proof valve is spaced apart from the through hole.

[0039] The electrical device according to a third aspect of the present invention includes: the battery described above.

[0040] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0041] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0042] Figure 1 This is a schematic diagram of the battery structure according to an embodiment of the present utility model;

[0043] Figure 2 This is a schematic diagram of the structure of a battery containing a current collector assembly according to an embodiment of the present utility model;

[0044] Figure 3 This is a schematic diagram of the structure of the flow guide and the flow collecting plate according to an embodiment of the present utility model;

[0045] Figure 4 This is a top view of the guide member according to an embodiment of the present utility model;

[0046] Figure 5 This is a cross-sectional view of the flow guide according to an embodiment of the present utility model;

[0047] Figure 6 This is a schematic diagram of the structure of the collector disk according to an embodiment of the present utility model;

[0048] Figure 7 This is a cross-sectional schematic diagram of the collector plate according to an embodiment of the present utility model;

[0049] Figure 8 This is a top view of a flow guide according to another embodiment of the present invention;

[0050] Figure 9 This is a schematic diagram of the collector plate according to another embodiment of the present invention;

[0051] Figure 10 This is a schematic diagram of the structure of the pole post containing a cavity according to an embodiment of the present utility model;

[0052] Figure 11 This is a schematic diagram of the structure of a battery containing a first insulating element according to an embodiment of the present invention;

[0053] Figure 12 This is a schematic diagram of the structure of a battery containing a second electrode column according to an embodiment of the present invention;

[0054] Figure 13 This is a schematic diagram of the structure of the cover plate with pole posts according to an embodiment of the present utility model;

[0055] Figure 14 This is a schematic diagram of the structure of the cover plate with an explosion-proof valve according to an embodiment of the present utility model;

[0056] Figure 15 This is a cross-sectional view of the cover plate with an explosion-proof valve according to an embodiment of the present utility model;

[0057] Figure 16 This is a schematic diagram of the structure of the guide member according to an embodiment of the present utility model, which includes a flow collecting disk guide portion;

[0058] Figure 17 This is a schematic diagram of the structure of the cover plate with pole posts according to another embodiment of the present utility model;

[0059] Figure 18This is a schematic diagram of the structure of the electrode column containing the injection hole according to an embodiment of the present invention;

[0060] Figure 19 This is a schematic diagram of the cover plate containing an injection hole according to an embodiment of the present utility model;

[0061] Figure 20 This is a cross-sectional view of the cover plate containing the injection hole according to an embodiment of the present utility model.

[0062] Figure label:

[0063] 100. Collector disk assembly;

[0064] 10. Collector plate; 11. Second liquid passage hole; 12. First flange; 13. Connecting part;

[0065] 20. Flow guide; 21. Flow guide section of pole post; 211. First liquid passage hole; 22. Flow guide section of collector plate; 30. Transition section;

[0066] 200. Battery;

[0067] 40. Cover plate; 401. Through hole; 41. Pole post; 411. Cavity;

[0068] 413. First pole column; 4131. Bottom wall; 4132. Cylinder; 4133. First overlapping part;

[0069] 414. Second pole post; 415. Pole post cap; 416. Second overlapping part; 417. Stepped part;

[0070] 50. Sealing element; 51. Injection port;

[0071] 60. First insulating component;

[0072] 70. Second insulating component; 80. Explosion-proof valve;

[0073] 81. Casing; 82. Battery cell; 83. Opening; 84. Opening; 85. First end; 86. Second end; 87. Sealing cap; 88. Groove. Detailed Implementation

[0074] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0075] The following is for reference. Figures 1-20 Description of a current collector assembly 100 for a battery according to an embodiment of the present invention.

[0076] Reference Figure 1 and Figure 2As shown, the current collector assembly 100 of the first aspect of this utility model includes a current collector 10 and a current guide 20. The current guide 20 includes a pole guide portion 21 and a plurality of current collector guide portions 22. The first end 85 of the plurality of current collector guide portions 22 is electrically connected to the current collector 10, and the second end 86 of the plurality of current collector guide portions 22 is electrically connected to the pole guide portion 21. The pole guide portion 21 is arranged to protrude from the plurality of current collector guide portions 22 in a direction away from the current collector 10. The pole guide portion 21 is adapted to be electrically connected to the pole 41.

[0077] Specifically, the current guide section of a traditional current collector needs to be bent when the cover is closed, and some require a three-fold current guide section. This not only occupies the axial space of the cell and affects the capacity of the cell, but also limits the thickness of the current collector due to the limited space required when the current guide section is closed, thus affecting the strength of the current collector. In addition, if the width of the current guide section is too wide, it is not easy to bend, and it is easy to interfere with the casing during the bending process, causing short circuit abnormalities.

[0078] The current guide 20 mainly consists of a pole guide section 21 and multiple current collector guide sections 22. The multiple current collector guide sections 22 can be welded to the current collector 10. The pole guide section 21 is used to connect to the pole 41. The current guide 20 is set as an independent structural component on the current collector 10. Furthermore, the first end 85 of the multiple current collector guide sections 22 is electrically connected to the current collector 10, enabling the circuit connection between the multiple current collector guide sections 22 and the current collector 10, thus allowing the current from the current collector 10 to flow to the multiple current collector guide sections 22. The second end 86 of the multiple current collector guide sections 22 is electrically connected to the pole guide section 21, enabling the circuit connection between the multiple current collector guide sections 22 and the pole guide section 21, thus allowing the current from the multiple current collector guide sections 22 to flow to the pole guide section 21.

[0079] Multiple current collectors 22 can be connected to the current collector 10 from different directions, enabling multi-directional current flow. This means that the battery 200 can have current flow paths in different directions, which reduces the overall internal resistance. Low internal resistance allows the battery 200 to have higher energy conversion efficiency and greater overcurrent capacity, thus enabling high-rate battery 200 performance.

[0080] Furthermore, multiple current collector guide sections 22 are connected to the current collector 10, which multi-directional current guidance ensures that the battery 200 can release sufficient energy in a short time while maintaining a low operating temperature. Moreover, each current collector guide section 22 can independently bear a portion of the current load, which can avoid excessive pressure on a single path, thereby improving the overcurrent capacity of the battery 200.

[0081] Furthermore, multiple collector plate guide sections 22 are respectively connected to pole post guide sections 21, so that the collector plate guide sections 22 and pole post guide sections 21 can be electrically connected, and the pole post guide sections 21 and collector plate guide sections 22 can carry the same electrical charge. Further, the pole post guide sections 21 are electrically connected to the pole post 41, so that the pole post 41 and pole post guide sections 21 can carry the same electrical charge.

[0082] Therefore, the current collector assembly 100 can achieve bidirectional or multidirectional current flow, thereby enabling high-rate battery performance.

[0083] According to some embodiments of the present invention, the angle between the thickness direction of the pole guide portion 21 and the thickness direction of the collector assembly 100 is [0°, 60°].

[0084] When the thickness direction of the pole guide 21 is the same as the thickness direction of the collector plate assembly 100, that is, the angle between the thickness direction of the pole guide 21 and the thickness direction of the collector plate assembly 100 is 0°, it is easier to position and assemble the pole guide 21 and the collector plate assembly 100, thereby reducing assembly difficulty and time.

[0085] When there is an angle between the thickness direction of the electrode guide section 21 and the thickness direction of the current collector assembly 100, if the angle between the thickness direction of the electrode guide section 21 and the thickness direction of the current collector assembly 100 is greater than 60°, it will increase the lateral space occupied by the electrode guide section 21 in the battery 200, which will make it inconvenient to install the electrode guide section 21. Therefore, the angle between the thickness direction of the electrode guide section 21 and the thickness direction of the current collector assembly 100 cannot be greater than 60°.

[0086] The angle between the thickness direction of the electrode guide section 21 and the thickness direction of the current collector assembly 100 can be set to 10°, 20°, 30° or 50°. This avoids occupying the space of the electrode guide section 21 and the current collector assembly 100 in the same thickness direction, thereby further increasing the volume of the battery cell 82 and increasing the battery capacity of the battery cell 82. It also avoids interference between the electrode guide section 21 and the current collector assembly 100, thus dispersing stress and avoiding rigid impact between the electrode guide section 21 and the current collector assembly 100 in the same thickness direction. Furthermore, it avoids the heat generated by the electrode guide section 21 and the current collector assembly 100 from concentrating, thereby achieving a better heat dissipation effect.

[0087] According to some embodiments of this utility model, such as Figure 3As shown, the second ends 86 of multiple current collector guide sections 22 are spaced apart on the electrode guide section 21. In this way, multiple current guiding paths can be increased, the effective conduction area can be increased, and the current density per unit area can be reduced. This not only reduces the risk of local overheating, but also improves the heat dissipation performance of the entire battery 200.

[0088] According to specific embodiments of this utility model, such as Figure 3 and Figure 8 As shown, there are two flow guide sections 22 in total, with the two flow guide sections 22 arranged opposite each other, or there are four flow guide sections 22 in total, with two flow guide sections 22 arranged opposite each other and the other two flow guide sections 22 also arranged opposite each other.

[0089] When there are two current collector guide sections 22, they are arranged opposite each other, thus avoiding current concentration in the current collector guide sections 22. The two current collector guide sections 22 are symmetrical about the central axis of the pole guide section 21, and the current path lengths between them are equal. This not only achieves bidirectional current conduction but also ensures a more uniform current distribution between the two current collector guide sections 22. Furthermore, the two current collector guide sections 22 are close to the current collector 10, which increases the contact area between the current collector guide sections 22 and the current collector 10, and also increases the current path, thereby reducing the contact resistance between the current collector guide sections 22 and the current collector 10.

[0090] Similarly, when there are four current collector guide sections 22, two current collector guide sections 22 are arranged opposite each other, and the other two current collector guide sections 22 are also arranged opposite each other. This can further increase the current guiding path and further avoid the concentration of current in the current collector guide sections 22. Moreover, the four current collector guide sections 22 are symmetrically arranged with respect to the central axis of the pole guide section 21, and the current path lengths between them are equal. This not only realizes four-way current guiding but also ensures a more uniform distribution of current among the four current collector guide sections 22. Furthermore, the four current collector guide sections 22 are close to the current collector 10, which can further increase the contact area between the current collector guide sections 22 and the current collector 10, and further increase the current path, thereby further reducing the contact resistance between the current collector guide sections 22 and the current collector 10.

[0091] According to some embodiments of the present invention, the pole guide portion 21 is arranged to protrude from the plurality of collector plate guide portions 22 in a direction away from the collector plate 10.

[0092] The electrode guide section 21 protrudes away from the current collector 10 relative to the current collector guide section 22. This creates a hollow cavity between the current collector guide section 22 and the electrode guide section 21, which can act as a buffer during the assembly of the cover and absorb the height tolerance of the battery cell 82. As a result, the guide section 20 does not need to be bent during the installation of the cover, and its thickness and width design are not limited.

[0093] Specifically, the electrode guide portion 21 is a boss formed by stamping. This increases the distance between the electrode guide portion 21 and the current collector guide portion 22 in the thickness direction of the electrode guide portion 21, creating a hollow cavity between them. During the assembly of the cell cover plate 40, this provides a buffering effect, absorbing the height tolerance of the cell 82. Because it absorbs the height tolerance of the cell 82, it also avoids the risk of electrode tab tearing and failure caused by cell 82 displacement when the battery 200 is dropped.

[0094] Furthermore, when the central area of ​​the battery 200 is subjected to through-welding, the electrode guide portion 21 is designed as a boss, which facilitates welding. This avoids the need for a boss on the current collector 10, thus solving the problem that the central boss area of ​​the traditional current collector cannot be used to weld the tabs. For example, if the battery 200 is a cylindrical battery 200, the current collector 10 is designed as a circle, and there is no boss in the central area of ​​the current collector 10. This increases the contact area between the cell 82 and the current collector 10, thereby enabling full radial welding of the cell 82 and improving the current carrying capacity.

[0095] According to some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the flow guide 20 also includes a plurality of transition portions 30, the two ends of which are respectively connected to the flow guide portion 22 of the collector plate and the flow guide portion 21 of the pole post, so that the flow guide portion 22 of the collector plate and the flow guide portion 21 of the pole post can be electrically connected.

[0096] The transition section 30 is bent relative to the pole guide section 21 and the collector plate guide section 22, or the transition section 30 is inclined relative to the pole guide section 21 and the collector plate guide section 22. In this way, the strength of the collector plate guide section 22 and the pole guide section 21 can be enhanced to a certain extent, and the risk of deformation caused by vibration or external impact can be reduced.

[0097] The two ends of the multiple transition sections 30 are respectively connected to the current collector guide section 22 and the pole guide section 21, thereby realizing the connection of the circuit of the current collector guide section 22 and the pole guide section 21, and allowing the current of the current collector guide section 22 to flow to the pole guide section 21.

[0098] According to some embodiments of the present invention, in the direction of the thickness of the collector plate 10, the distance from the end where the transition portion 30 and the pole guide portion 21 are connected to the collector plate 10 is greater than the distance from the end where the transition portion 30 and the collector plate guide portion 22 are connected to the collector plate 10.

[0099] The vertical distances from the end of the transition section 30 connected to the pole guide section 21 and the end of the transition section 30 connected to the current collector guide section 22 to the top surface of the current collector 10 are different. That is, in the direction of the thickness of the current collector 10, the vertical distances between the two ends of the transition section 30 and the top surface of the current collector 10 have a height difference. This allows the pole guide section 21 to protrude from the current collector 10. In this way, it can play a buffering role when subjected to external force, absorb the height tolerance of the cell 82, and avoid stress concentration between the current collector guide section 22 and the pole guide section 21.

[0100] According to some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the vertical distance from the transition section 30 to the central axis of the pole guide section 21 increases in the direction closer to the collector plate 10. This facilitates the connection between the pole guide section 21 and the collector plate guide section 22, which is farther away, through the transition section 30, and also serves as a transition, thereby avoiding stress concentration between the pole guide section 21 and the collector plate guide section 22.

[0101] According to some embodiments of this utility model, such as Figure 3 As shown, at least a portion of the flow guide section 22 of the flow collector plate is in contact with the surface of the flow collector plate 10.

[0102] At least a portion of the current collector guide section 22 is in surface-to-surface contact with the current collector 10. That is, a part of the current collector guide section 22 is in surface-to-surface contact with the current collector 10, or the entire current collector guide section 22 is in surface-to-surface contact with the current collector 10. Surface-to-surface contact increases the contact area between the current collector guide section 22 and the current collector 10, thereby reducing contact resistance and improving current transmission efficiency. Furthermore, surface-to-surface contact provides a degree of redundancy; even if some areas experience poor contact, other areas can still maintain normal function, thus improving reliability.

[0103] According to some embodiments of this utility model, such as Figure 3 As shown, at least part of the flow guide section 22 of the flow collector is welded to the flow collector 10.

[0104] At least a portion of the collector plate guide section 22 is welded to the collector plate 10 via through-welding. Since through-welding is a non-contact welding method, no physical contact force acts on the collector plate guide section 22. This not only ensures a more stable and secure connection between the collector plate guide section 22 and the collector plate 10, but also avoids the collector plate guide section 22 being affected by mechanical stress. Multiple weld points can be formed between the collector plate guide section 22 and the collector plate 10, with these weld points spaced apart on the collector plate guide section 22, thereby improving the welding reliability between the collector plate guide section 22 and the collector plate 10.

[0105] According to some embodiments of this utility model, such as Figure 3 and Figure 8 As shown, the second ends 86 of the multiple current collector guide sections 22 are spaced apart in the circumferential direction of the pole guide section 21. The second ends 86 of the multiple current collector guide sections 22 can be evenly spaced apart in the circumferential direction of the pole guide section 21, so that the current between the pole guide section 21 and the current collector 10 can be more uniform.

[0106] According to some embodiments of this utility model, such as Figure 3 and Figure 6 As shown, the electrode guide section 21 is provided with a first liquid passage hole 211 for liquid injection. The first liquid passage hole 211 is provided through the electrode guide section 21 along the thickness direction. The collector plate 10 is provided with a plurality of second liquid passage holes 11 for liquid injection. The plurality of second liquid passage holes 11 are provided through the collector plate 10 along the thickness direction. The plurality of second liquid passage holes 11 are spaced apart on the collector plate 10.

[0107] The first liquid passage 211 is located in the middle of the electrode guide section 21. The first liquid passage 211 extends through the electrode guide section 21 along its thickness direction. The first liquid passage 211 facilitates the injection of electrolyte during the injection of electrolyte.

[0108] Furthermore, the collector plate 10 is provided with a plurality of second liquid passage holes 11 for liquid injection. The plurality of second liquid passage holes 11 penetrate along the thickness direction of the collector plate 10, which can increase the injection rate of electrolyte and reduce the injection time of electrolyte, thereby improving the efficiency of electrolyte injection.

[0109] Furthermore, multiple second liquid passage holes 11 are spaced apart on the manifold 10, which can prevent interference during the injection process.

[0110] Furthermore, at least one second liquid passage 11 is coaxially arranged with the first liquid passage 211, which can speed up the rate of electrolyte injection into the cell 82.

[0111] According to some embodiments of this utility model, such as Figure 2As shown, a first flange 12 is provided on the outer peripheral edge of the collector plate 10. The first flange 12 is bent relative to the side of the collector plate 10 toward the guide member 20. The first flange 12 is located on the side of the guide portion 22 of the collector plate away from the pole guide portion 21, thereby limiting the guide portion 22 of the collector plate.

[0112] The first flange 12 of the collector plate 10 is correspondingly provided with the collector plate guide part 22. In this way, the first flange 12 can limit the position of the collector plate guide part 22. Moreover, the first flange 12 can provide a foolproof positioning for the installation of the collector plate guide part 22 on the collector plate 10, thereby avoiding misalignment of the collector plate guide part 22.

[0113] According to some embodiments of this utility model, such as Figure 11 As shown, in the thickness direction of the collector plate 10, the height of the first flange 12 is h, and h satisfies the relationship: 0.3mm≤h≤2mm.

[0114] Specifically, the height of the first flange 12 must be no less than 0.3mm. If the height of the first flange 12 is less than 0.3mm, it is prone to damage during installation due to insufficient strength. Therefore, the height of the first flange 12 must be no less than 0.3mm.

[0115] When the height of the first flange 12 is set to 1mm, it can not only ensure that the first flange 12 has a certain strength, but also prevent the first flange 12 from interfering with other components, and also play a role in preventing mistaken positioning of the flow guide part 22 of the flow collecting plate.

[0116] Furthermore, the height of the first flange 12 is set to be no greater than 2mm. If the height of the first flange 12 is set to be greater than 2mm, it is easy for the first flange 12 to interfere with other components during installation, thus affecting the installation. Therefore, the height of the first flange 12 is set to be no greater than 2mm.

[0117] According to some embodiments of this utility model, such as Figure 3 As shown, the collector plate 10 is provided with at least one connecting part 13. The connecting part 13 protrudes along the thickness direction of the collector plate 10 in a direction away from the guide member 20. The connecting part 13 is used for electrical connection with the battery cell 82.

[0118] The protruding connection part 13 can position the electrode tab and the current collector 10 during welding, and can also increase the contact area between the current collector 10 and the connection part 13, thereby increasing the current flow area and improving the current transmission efficiency.

[0119] Furthermore, the protruding connection portion 13 of the current collector 10 can increase the rigidity of the current collector 10, thereby preventing deformation of the current collector 10, and also facilitating the electrical connection between the connection portion 13 and the battery cell 82.

[0120] According to some embodiments of this utility model, such as Figure 3 As shown, there are multiple connecting parts 13, which are spaced apart in the circumferential direction of the collecting plate 10. In the thickness direction of the collecting plate 10, the orthographic projection of the collecting plate guide part 22 and the orthographic projection of the connecting part 13 are at least partially offset.

[0121] The multiple connecting parts 13 are evenly spaced around the current collector 10, which ensures a more uniform current distribution throughout the battery 200 and avoids localized overheating caused by current concentration at a single point, thereby improving the safety and lifespan of the battery 200. Furthermore, the presence of multiple connecting parts 13 increases the number of current transmission paths, allowing current to flow simultaneously in multiple directions, thus reducing the current density on a single path.

[0122] Furthermore, in the thickness direction of the collector plate 10, that is, in the direction perpendicular to the top surface of the collector plate 10, on the projection surface formed in the thickness direction of the collector plate 10, the orthographic projection of the collector plate guide portion 22 and the orthographic projection of the connecting portion 13 are at least partially offset, which can make the collector plate guide portion 22 and a part of the connecting portion 13 fit together, thereby facilitating welding and increasing the distance between the collector plate guide portion 22 and the connecting portion 13, thereby avoiding short circuits.

[0123] According to some embodiments of the present invention, there are multiple connecting parts 13, and the multiple connecting parts 13 are spaced apart on the collector plate 10, and at least some of the collector plate guide parts 22 are located between two adjacent connecting parts 13.

[0124] The multiple connecting parts 13 are spaced apart on the current collector 10, which can prevent the interruption of the circuit between the battery cell 82 and the connecting parts 13. When one of the connecting parts 13 is damaged, the other connecting parts 13 can ensure the circuit connection with the battery cell 82, thereby improving the stability of the circuit connection between the connecting parts 13 and the battery cell 82.

[0125] Furthermore, at least part of the current collector guide portion 22 is located between two adjacent connecting portions 13, which can prevent the connection between the battery cell 82 and the connecting portion 13 from being affected when the current collector guide portion 22 and the current collector 10 are welded by through welding.

[0126] According to some embodiments of this utility model, the guide member 20 is an integrally formed metal structural member.

[0127] The integrally molded metal flow guide 20 has no welding or splicing points, thus its integrity is stronger and its structure is more robust. Compared with a split design, the integrally molded flow guide 20 can avoid weak points caused by welding or connection points, thereby improving tensile, compressive and torsional resistance.

[0128] Moreover, the one-piece molded current guide 20 can eliminate the contact resistance problem between different components. Since there are no welding or splicing points, the current can flow smoothly through the entire current guide 20, thereby significantly improving conductivity and reducing energy loss.

[0129] According to some embodiments of this utility model, the guide member 20 is an integrally formed copper or stainless steel part.

[0130] When the current guide 20 is made of copper, copper has good conductivity and low resistivity, which can effectively reduce energy loss when current passes through.

[0131] When the flow guide 20 is made of stainless steel, the use of stainless steel can significantly reduce the overall weight. Stainless steel has good thermal conductivity and good electrical conductivity.

[0132] like Figure 1 and Figure 2 As shown, the battery 200 according to the second aspect embodiment of the present invention includes: a shell, a battery cell 82, a cover plate 40, a terminal post 41, and a current collector assembly 100 as described above. The shell has a receiving cavity that can accommodate the battery cell 82. The shell has a through hole 401. The battery cell 82 is housed in the receiving cavity. The terminal post 41 passes through the through hole 401. The current collector assembly 100 is housed in the receiving cavity. The current guide portion 21 of the terminal post is electrically connected to the terminal post 41. The current collector 100 is electrically connected to the battery cell 82.

[0133] The outer casing includes a housing 81 and a cover plate 40. The housing 81 has an opening 83 to facilitate the installation of the battery cell 82. The cover plate 40 has a through hole 401 to facilitate the insertion of the electrode post 41. The cover plate 40 seals the opening 83, which can protect the battery cell 82 and prevent electrolyte leakage.

[0134] The current collector assembly 100 is located between the battery cell 82 and the cover plate 40, which facilitates the transfer of electrical energy from the battery cell 82 to the cover plate 40. The terminal post 41 is disposed on the cover plate 40, which facilitates the connection of the battery 200 to external electrical devices. Since multiple current collector guide sections 22 are electrically connected to the current collector 10, and the current collector 10 is electrically connected to the battery cell 82, the electrical energy of the battery cell 82 can flow through the current collector 10 to multiple current collector guide sections 22. The multiple current collector guide sections 22 are respectively connected to the terminal post guide sections 21. Since the terminal post guide sections 21 are electrically connected to the terminal post 41, the terminal post 41 and the terminal post guide sections 21 can have the same electrical properties.

[0135] According to some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the cover plate 40 or the pole post 41 is provided with an injection hole 51, and the pole post guide part 21 is provided with a first liquid passage hole 211 for injection. In the thickness direction of the collecting plate 10, the orthographic projection of the first liquid passage hole 211 and the orthographic projection of the injection hole 51 at least partially overlap.

[0136] The electrode guide section 21 is provided with a first liquid passage hole 211, which facilitates the flow of electrolyte into the cell 82 when electrolyte is injected. Moreover, the projection of the first liquid passage hole 211 and the orthographic projection of the injection hole 51 at least partially overlap. In this way, the electrolyte can flow into the cell 82 through the injection hole 51 of the cover plate 40 or the electrode 41 and then through the first liquid passage hole 211, thereby avoiding the need to open electrolyte injection holes in other areas of the cover plate 40.

[0137] According to some embodiments of this utility model, the first liquid passage hole 211 and the liquid injection hole 51 are coaxially arranged.

[0138] The coaxial design of the first liquid passage 211 and the liquid injection hole 51 can make more efficient use of the limited space, shorten the flow path of the electrolyte, improve the injection efficiency, and reduce unnecessary bends and turns, thereby reducing the resistance to electrolyte flow.

[0139] According to some embodiments of this utility model, such as Figure 2 As shown, the pole post 41 includes: a pole post body and a pole post cover 415. The pole post body is inserted into the through hole 401. The pole post body forms a cavity 411 with an opening. The pole post body includes a bottom wall 4131. The bottom wall 4131 is located on the side of the cover plate 40 near the guide member 20. The bottom wall 4131 is electrically connected to the pole post guide portion 21. The pole post cover 415 is disposed on the pole post body and closes the opening of the cavity 411.

[0140] The electrode post 41 has a cavity 411 inside. The cavity 411 can provide an injection space for electrolyte injection and also provide a space for welding the electrode post 41 and the electrode post guide part 21.

[0141] The bottom wall 4131 of the cavity 411 is electrically connected to the pole post guide part 21. The cavity 411 formed inside the pole post 41 is a U-shaped cavity structure. The bottom wall 4131 of the cavity 411 is a plane, which is used to fit and laser weld with the pole post guide part 21 of the guide member 20, thereby facilitating flow guidance.

[0142] The electrode cap 415 is disposed on the electrode body and seals the opening of the cavity 411, thereby preventing electrolyte leakage.

[0143] According to some embodiments of this utility model, the bottom wall 4131 and the electrode guide portion 21 are in surface-to-surface contact. This increases the contact area between the bottom wall 4131 and the electrode guide portion 21, thereby improving the stability of the electrical connection between them.

[0144] According to some embodiments of this utility model, such as Figure 1 As shown, the pole post 41 is located in the central area of ​​the cover plate 40.

[0145] When the terminal post 41 is located in the central area of ​​the cover plate 40, it can effectively distribute the current flowing into or out of the battery 200, and can also avoid the problem of localized heating caused by current on one side. The external shape of the terminal post 41 can be any long and narrow closed geometry such as ring or rectangle.

[0146] According to some embodiments of the present invention, the bottom wall 4131 is constructed as either a rectangle or a racetrack shape.

[0147] Compared to circular bottom walls, rectangular or racetrack-shaped bottom walls can provide a larger contact area and reduce contact resistance, thereby reducing energy loss and heat generation.

[0148] According to some embodiments of this utility model, such as Figure 2 and Figure 11 As shown, the pole body includes: a first pole body 413 and a second pole body 414. The first pole body 413 includes a bottom wall 4131, a cylindrical body 4132 and a first overlapping part 4133. The first pole body 413 has a through hole 401. The bottom wall 4131 is located at the bottom of the cylindrical body 4132. The bottom wall 4131 and the cylindrical body 4132 form a cavity 411. The top of the cylindrical body 4132 has a first overlapping part 4133. The first overlapping part 4133 is located on the outer peripheral wall of the cylindrical body 4132.

[0149] The second pole post 414 is wound around the outer peripheral wall of the cylinder 4132, and the second pole post 414 includes a second overlapping portion 416 corresponding to the first overlapping portion 4133. The first overlapping portion 4133 and the second overlapping portion 416 overlap and cooperate to fix the first pole post 413 and the second pole post 414 together. In the direction perpendicular to the thickness of the collector plate, the second pole post 414 includes an opening 84 away from the collector plate 10 relative to the first pole post 413. The pole post cover 415 is fixedly connected to the second pole post 414, thereby closing the opening 84.

[0150] The first pole piece 413 has a through hole 401, which facilitates the connection between the first pole piece 413 and the pole piece guide 21. The bottom wall 4131 is provided at the bottom of the first pole piece 413, which facilitates the connection with the pole piece guide 21.

[0151] Furthermore, the first pole post 413 is also provided with a cylindrical body 4132. The cylindrical body 4132 facilitates the connection between the first pole post 413 and the second pole post 414. Moreover, the middle part of the cylindrical body 4132 is a cavity 411, which facilitates the penetration welding of the bottom wall 4131 and the pole post guide part 21 from the outside.

[0152] Furthermore, the provision of the first overlapping portion 4133 and the second overlapping portion 416 can increase the strength of the connection between the first pole piece 413 and the second pole piece 414, provide a more robust connection, and ensure the stability and reliability of the connection between the first pole piece 413 and the second pole piece 414, thereby reducing the risk of failure caused by loosening of the connection between the first pole piece 413 and the second pole piece 414.

[0153] The first electrode post 413 forms an opening 84 in the cavity 411, which facilitates the injection of electrolyte. When the electrode post cap 415 is not installed, the cavity 411 provides welding space for through-welding of the first electrode post 413 and the electrode post guide portion 21, thereby facilitating through-welding of the first electrode post 413 and the electrode post guide portion 21.

[0154] Furthermore, the cavity 411 allows for through-welding of the first electrode post 413 to the electrode post guide section 21, eliminating the need for the traditional lead-out tab process of the current collector 10. This effectively reduces the manufacturing cost of the battery 200 and improves process control. Additionally, the absence of lead-out tabs in the current collector 10 reduces material costs.

[0155] Furthermore, the pole cap 415 is fixedly connected to the second pole body 414, thereby sealing the opening 84 of the cavity 411, which can avoid the risk of leakage from potential weld holes in the penetration welding and has high reliability.

[0156] According to some embodiments of this utility model, such as Figure 12 As shown, a step portion 417 is also provided around the inner wall of the second pole post 414. The pole post cover 415 and the step portion 417 are fixedly connected, thereby sealing the opening 84.

[0157] The step portion 417 increases the contact area between the pole cap 415 and the step portion 417, and the step portion 417 also provides support for the pole cap 415. In this way, the connection between the pole cap 415 and the step portion 417 can be more stable and firm, and the sealing performance of the pole cap 415 to the opening 84 can also be improved.

[0158] According to some embodiments of this utility model, on the projection plane perpendicular to the thickness direction of the collector plate 10, the projection of the bottom wall 4131 covers the projection of the through hole 401. In this way, the bottom wall 4131 can seal the through hole 401, thereby preventing electrolyte leakage.

[0159] Furthermore, the bottom wall 4131 protrudes at least partially from the pole post 41, which facilitates the connection between the bottom wall 4131 and the pole post guide portion 21 and increases the contact area between the bottom wall 4131 and the pole post guide portion 21, thereby improving the stability of the electrical connection between the bottom wall 4131 and the pole post guide portion 21.

[0160] According to some embodiments of this utility model, such as Figure 3 and Figure 18 As shown, the electrode guide section 21 is provided with a first liquid passage hole 211, and the bottom wall 4131 is provided with a liquid injection hole 51. The first liquid passage hole 211 and the liquid injection hole 51 are arranged opposite to each other.

[0161] The battery 200 also includes a seal 50, which is disposed at the injection hole 51 and seals the injection hole 51.

[0162] The first liquid passage 211 is arranged opposite to the liquid injection hole 51, so that the electrolyte can be easily injected into the cell 82 through the first liquid passage 211 and the liquid injection hole 51 during electrolyte injection.

[0163] Furthermore, a seal 50 is provided at the injection hole 51. For example, the seal 50 can be a rubber stopper, which can seal the injection hole 51 and thus prevent electrolyte leakage.

[0164] Furthermore, an injection hole 51 is provided in the middle of the bottom wall 4131, and the two side planes of the bottom wall 4131 are welded to the pole guide portion 21 through the weld, and then sealed by the pole cap 415, thereby simplifying the structure on the cover plate 40.

[0165] According to some embodiments of the present invention, the battery 200 further includes an insulating member that abuts between the terminal post 41 and the cover plate 40, thereby insulating and sealing the terminal post 41 and the cover plate 40.

[0166] The insulating component can be set as an insulating sealing ring, which can not only insulate the pole post 41 and the cover plate 40, but also seal the pole post 41 and the cover plate 40.

[0167] According to some embodiments of this utility model, such as Figure 11 As shown, the electrode post 41 includes a first electrode post 413 and a second electrode post 414. The first electrode post 413 includes a cylindrical body 4132. The insulating components include a first insulating component 60 and a second insulating component 70. The first insulating component 60 is disposed between the cover plate 40 and the second electrode post 414, thereby insulating the second electrode post 414 from the cover plate 40. The second insulating component 70 is disposed between the cover plate 40 and the bottom wall 4131, thereby insulating the bottom wall 4131 from the cover plate 40. The second insulating component 70 and the first insulating component 60 abut against the inner wall of the through hole 401 and the outer peripheral wall of the cylindrical body 4132, thereby insulating the first electrode post 413 from the cover plate 40.

[0168] The first insulating element 60 abuts between the cover plate 40 and the second pole piece 414, which can insulate and seal the space between the cover plate 40 and the second pole piece 414, thereby preventing the current from flowing from the second pole piece 414 to the cover plate 40.

[0169] Furthermore, the first insulating member 60 abuts against the inner wall of the through hole 401 of the cover plate 40 and the outer wall of the cylinder 4132. The first insulating member 60 can play an insulating role, thus preventing the current in the cylinder 4132 from flowing to the cover plate 40.

[0170] Furthermore, the second insulating element 70 abuts between the bottom wall 4131 and the cover plate 40. The second insulating element 70 can play an insulating role, thus preventing the current from flowing from the bottom wall 4131 to the cover plate 40.

[0171] Furthermore, the second insulating member 70 abuts against the inner wall of the through hole 401 and the outer wall of the cylinder 4132, which can increase the sealing between the inner wall of the through hole 401 and the outer wall of the cylinder 4132, thereby insulating the first electrode post 413 and the cover plate 40 and preventing electrolyte from flowing to the cover plate 40. Moreover, the second insulating member 70 is located on the side of the first insulating member 60 adjacent to the current guide member 20, which can further improve the sealing between the first insulating member 60 and the current guide member 20, thereby ensuring the safety of the inside of the battery 200.

[0172] According to some embodiments of the present invention, the second insulating member 70 is an elastic member, and the second insulating member 70 is interference-fitted between the inner wall of the through hole 401 and the outer peripheral wall of the pole post 41.

[0173] The elastic element undergoes a certain amount of compressive deformation during the interference fit, which fills the tiny gap between the inner wall of the through hole 401 and the outer peripheral wall of the electrode post 41, thereby forming an effective seal. This seal prevents electrolyte, gas, or other media from leaking from the inside to the external environment, thus ensuring the safety and reliability of the battery 200.

[0174] According to some embodiments of this utility model, such as Figure 11 As shown, the cover plate 40 is provided with a liquid injection hole 51, which is spaced apart from the through hole 401. The battery 200 also includes a sealing cover 87, which is provided on the cover plate 40 and covers the liquid injection hole 51. The cover plate 40 of the outer casing is provided with an explosion-proof valve 80, which is spaced apart from the through hole 401.

[0175] The injection hole 51 and the through hole 401 are spaced apart. When the injection hole 51 and the through hole 401 are kept at an appropriate distance, the electrolyte can be prevented from directly contacting the electrode post 41, thereby reducing the risk of short circuit caused by electrolyte leakage.

[0176] Furthermore, maintaining an appropriate distance between the explosion-proof valve 80 and the through-hole 401 effectively reduces the risk of explosion due to excessive internal pressure. If the explosion-proof valve 80 is too close to the through-hole 401, in the event of pressure relief, the high-speed ejected gas or liquid may directly impact the pole 41 and its connections, causing a short circuit or other electrical faults. Through this spacing, even if the explosion-proof valve 80 is opened, the safety of the pole 41 and other critical components can be ensured.

[0177] Furthermore, such as Figure 11 As shown, the cover plate 40 has a groove 88 corresponding to the sealing cover 87. The liquid injection hole 51 is located at the bottom of the groove 88, and the sealing cover 87 overlaps the opening of the groove 88. The sealing element 50 seals the liquid injection hole 51, and the sealing cover 87 further covers the liquid injection hole 51, thereby further preventing electrolyte leakage and improving the sealing performance. The top surface of the sealing cover 87 is flush with the top surface of the cover plate 40.

[0178] The electrical device according to a third aspect of the present invention includes: the battery 200 described in the above embodiment.

[0179] The installation steps for battery 200 include:

[0180] During assembly, the first electrode post 413 passes through the first insulating member 60 and the second insulating member 70. The top of the first electrode post 413 is riveted and fixed at the step that mates with the second electrode post 414. Compression of the first insulating member 60 and the second insulating member 70 achieves insulation between the electrode post 41 and the cover plate 40 or sealing of the battery 200.

[0181] After the current collector 10 is radially welded to the tabs of the battery cell 82, the matching current guide 20 is installed and welded in place. The current guide bridge boss is formed by stamping and is used to weld with the first pole piece 413.

[0182] When the cell 82 is closed, the bottom wall 4131 of the first electrode post 413 of the cover plate 40 corresponds to and is compressed and fitted with the electrode post guide portion 21. After the casing opening of the battery 200 is sealed by welding, the bottom wall 4131 is welded and fixed to the electrode post guide portion 21 by external penetration welding. After penetration welding, the electrode post cover 415 matching the second electrode post 414 is installed. By welding the seam, the inside and outside of the cell 82 can be completely sealed, and electrolyte leakage can be prevented.

[0183] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0184] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0185] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A collector disk assembly, characterized in that, include: Collector disk (10); The flow guide (20) includes a pole guide (21) and a plurality of collector plate guides (22). The first end (85) of the collector plate guide (22) is electrically connected to the collector plate (10), and the second end (86) of the collector plate guide (22) is electrically connected to the pole guide (21). The electrode guide section (21) is adapted to be electrically connected to the electrode (41).

2. The collector disk assembly according to claim 1, characterized in that, The angle between the thickness direction of the pole guide section and the thickness direction of the collector plate assembly is [0°, 60°].

3. The collector disk assembly according to claim 1, characterized in that, The second ends (86) of the plurality of the collector guide sections (22) are spaced apart on the pole guide section (21).

4. The collector assembly according to claim 3, characterized in that, The number of the flow guide section (22) of the flow collecting plate is two, and the two flow guide sections (22) are arranged opposite to each other; or The number of the flow guide section (22) is four, with two flow guide sections (22) arranged opposite to each other, and the other two flow guide sections (22) are also arranged opposite to each other.

5. The collector disk assembly according to claim 1, characterized in that, The pole guide section (21) protrudes outward from the plurality of collector guide sections (22) in a direction away from the collector (10).

6. The collector disk assembly according to claim 1, characterized in that, The flow guide (20) also includes: Multiple transition sections (30) are provided, with their two ends connected to the collector plate guide section (22) and the pole guide section (21) respectively, so that the collector plate guide section (22) and the pole guide section (21) are electrically connected.

7. The collector disk assembly according to claim 6, characterized in that, In the direction of the thickness of the collector plate (10), the distance from the end where the transition part (30) and the pole guide part (21) are connected to the collector plate (10) is greater than the distance from the end where the transition part (30) and the collector plate guide part (22) are connected to the collector plate (10).

8. The collector assembly according to claim 7, characterized in that, The vertical distance from the transition section (30) to the central axis of the pole guide section (21) increases in the direction closer to the collector plate (10).

9. The collector disk assembly according to claim 1, characterized in that, At least part of the flow guide portion (22) of the flow collector is in surface contact with the flow collector (10).

10. The collector disk assembly according to claim 1, characterized in that, At least part of the flow guide portion (22) of the flow collector is welded to the flow collector (10).

11. The collector disk assembly according to claim 1, characterized in that, The electrode guide section (21) is provided with a first liquid passage hole (211), which is provided through the electrode guide section (21) along the thickness direction; and / or The collecting plate (10) is provided with a plurality of second liquid passage holes (11), which penetrate along the thickness direction of the collecting plate (10) and are spaced apart on the collecting plate (10).

12. The manifold assembly according to any one of claims 1-11, characterized in that, The outer periphery of the collector plate (10) is provided with a first flange (12). The first flange (12) is bent relative to the side of the collector plate (10) facing the guide member (20). The first flange (12) is located on the side of the guide part (22) of the collector plate away from the pole guide part (21) to limit the guide part (22) of the collector plate.

13. The collector assembly according to claim 12, characterized in that, In the thickness direction of the collector plate (10), the height of the first flange (12) is h, and h satisfies the relationship: 0.3mm≤h≤2mm.

14. The manifold assembly according to any one of claims 1-11, characterized in that, The collector plate (10) is provided with at least one connecting part (13), which protrudes in the direction away from the guide member (20) along the thickness direction of the collector plate (10), and the connecting part (13) is used to electrically connect with the battery cell (82).

15. The collector assembly according to claim 14, characterized in that, In the thickness direction of the collector plate (10), the orthographic projection of the guide portion (22) of the collector plate and the orthographic projection of the connecting portion (13) are at least partially offset.

16. The collector assembly according to claim 14, characterized in that, There are multiple connecting parts (13), and the multiple connecting parts (13) are spaced apart on the collector plate (10). At least some of the collector plate guide parts (22) are located between two adjacent connecting parts (13).

17. The collector disk assembly according to any one of claims 1-11, characterized in that, The flow guide (20) is an integrally formed metal structural component.

18. The collector disk assembly according to claim 17, characterized in that, The guide component (20) is an integrally formed copper or stainless steel component.

19. A battery, characterized in that, include: The outer shell has a receiving cavity and a through hole (401). The battery cell (82) is housed within the receiving cavity; A pole post (41) is inserted into the through hole (401); The current collector assembly (100) according to any one of claims 1-18, wherein the current collector assembly (100) is housed in the receiving cavity, the pole guide portion (21) is electrically connected to the pole (41), and the current collector (10) is electrically connected to the battery cell (82).

20. The battery according to claim 19, characterized in that, The outer casing includes a housing (81) and a cover plate (40). The housing (81) has an opening (83), the cover plate (40) seals the opening (83), and the through hole (401) is provided on the cover plate (40).

21. The battery according to claim 20, characterized in that, The cover plate (40) or the pole (41) is provided with a liquid injection hole (51), and the pole guide part (21) is provided with a first liquid passage hole (211). In the thickness direction of the collecting plate (10), the orthographic projection of the first liquid passage hole (211) and the orthographic projection of the liquid injection hole (51) at least partially overlap.

22. The battery according to claim 21, characterized in that, The first liquid passage (211) and the liquid injection hole (51) are coaxially arranged.

23. The battery according to claim 21, characterized in that, The cover plate (40) is provided with the liquid injection hole (51), the liquid injection hole (51) and the through hole (401) are spaced apart, and the battery also includes a sealing cover (87), the sealing cover (87) is provided on the cover plate (40) and covers the liquid injection hole (51).

24. The battery according to claim 21, characterized in that, The battery also includes: A sealing element (50) is provided at the injection hole (51) and seals the injection hole (51).

25. The battery according to claim 20, characterized in that, The battery also includes: An insulating element is abutted between the pole (41) and the cover plate (40) to insulate and seal the pole (41) and the cover plate (40).

26. The battery according to claim 19, characterized in that, The pole (41) includes a bottom wall (4131) which is electrically connected to the pole guide portion (21).

27. The battery according to claim 26, characterized in that, The bottom wall (4131) and the pole guide (21) are in surface contact.

28. The battery according to claim 19, characterized in that, The pole (41) includes: The electrode is inserted into the through hole (401) and forms a cavity (411) with an opening (84). A pole cap (415) is disposed on the pole body and closes the opening (84).

29. The battery according to claim 28, characterized in that, The pole body includes: The first pole post (413) passes through the through hole (401). The first pole post (413) includes a bottom wall (4131), a cylinder (4132), and a first overlapping part (4133). The bottom wall (4131) is located at the bottom of the cylinder (4132) and forms the cavity (411) with the cylinder (4132). The first overlapping part (4133) is located at the top of the cylinder (4132) and is located on the outer peripheral wall of the cylinder (4132). The second pole post (414) is wrapped around the outer peripheral wall of the cylinder (4132), and the second pole post (414) includes a second overlapping part (416) corresponding to the first overlapping part (4133). The first overlapping part (4133) and the second overlapping part (416) overlap and cooperate to fix the first pole post (413) and the second pole post (414) together. In the thickness direction of the manifold (10), the second pole piece (414) includes the opening (84) that is away from the manifold (10) relative to the first pole piece (413), and the pole piece cap (415) and the second pole piece (414) are fixedly connected to close the opening (84).

30. The battery according to claim 29, characterized in that, The electrode guide section (21) is provided with a first liquid passage hole (211), and the bottom wall (4131) is provided with a liquid injection hole (51). The first liquid passage hole (211) and the liquid injection hole (51) are arranged opposite to each other.

31. The battery according to any one of claims 19-30, characterized in that, The pole post (41) includes a bottom wall (4131), and in the thickness direction of the collector plate (10), the orthographic projection of the bottom wall (4131) covers the orthographic projection of the through hole (401).

32. The battery according to any one of claims 19-30, characterized in that, The outer casing is provided with an explosion-proof valve (80), and the explosion-proof valve (80) is spaced apart from the through hole (401).

33. An electrical appliance, characterized in that, include: The battery according to any one of claims 19-32.

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