Cell housing, cell module, cell pack, and electric device

Abstract

A cell housing, a cell module, a cell pack, and an electric device. The cell housing comprises a plurality of housing plates that enclose an accommodating cavity having an opening, the accommodating cavity being configured to accommodate a cell. When the cell is located in the accommodating cavity, an electrode of the cell and the opening are located on the same side. An alignment structure is provided on at least one of the housing plates on the side close to the opening, and the alignment structure is configured for connection alignment of the cell.

Description

A battery cell housing, a battery cell module, a battery cell assembly, and an electrical device.

[0001] This application claims priority to Chinese Patent Application No. 202510121369.6, filed on January 23, 2025, entitled “A Battery Cell Housing, Battery Cell Module, Battery Cell Assembly and Electrical Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, specifically to a cell housing, a cell module, a cell assembly, and an electrical device. Background Technology

[0003] Existing battery packs typically include multiple cells arranged to form a cell assembly. On the same side of this cell assembly, each cell has a positive terminal and a negative terminal. Furthermore, the battery pack includes multiple connecting tabs, with the positive terminal of one cell and the negative terminal of an adjacent cell simultaneously welded to a connecting tab to electrically connect the positive and negative terminals.

[0004] In the existing technology, during the production of the battery pack, when welding multiple connecting pieces to the cell assembly, there may be a large error in the welding position of the connecting pieces, which results in poor quality of the produced battery pack. Summary of the Invention

[0005] This application provides a battery cell housing, a battery cell module, a battery cell assembly, and an electrical device. When the battery cell housing is used to manufacture the battery cell module, the connection positions of the various components can be more accurate when connecting different parts of the battery cell module, thereby improving the production quality of the battery cell module.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a battery cell housing, the battery cell housing comprising a plurality of shell plates, the plurality of shell plates surrounding and forming an accommodating cavity with an opening, the accommodating cavity being used to accommodate a battery cell; when the battery cell is located within the accommodating cavity, the electrodes of the battery cell are located on the same side as the opening. At least one of the shell plates is provided with an alignment structure on the side near the opening, the alignment structure being used for the connection and alignment of the battery cell.

[0008] As an optional implementation, the alignment structure is an alignment hole formed in the shell plate;

[0009] The alignment hole extends through the shell plate along the depth direction of the opening.

[0010] As an optional implementation, the alignment structure is an alignment groove formed on the shell plate; the alignment groove extends along the depth direction of the opening.

[0011] As an optional implementation, the alignment structure is an alignment protrusion disposed on the shell plate.

[0012] As an optional implementation, the alignment structure is provided with optical elements.

[0013] As an optional implementation, the optical element is a reflective element or a light-absorbing element.

[0014] As an optional implementation, when the alignment structure is an alignment hole, the optical element is disposed on the hole wall of the alignment hole;

[0015] When the alignment structure is an alignment groove, the optical element is disposed on the groove wall of the alignment groove;

[0016] When the alignment structure is an alignment protrusion, the optical element is disposed on the outer surface of the alignment protrusion.

[0017] As an optional implementation, the number of alignment structures is at least two, and the at least two alignment structures are spaced apart on the same shell plate.

[0018] As an optional implementation, the plurality of shell plates include a first shell side plate that extends along the depth direction of the opening;

[0019] The alignment structure is disposed at the end of the first shell side plate near the opening.

[0020] As an optional implementation, the number of the first shell side plates is at least two, and the at least two first shell side plates are arranged opposite each other along a first direction; the first direction is perpendicular to the depth direction of the opening.

[0021] As an optional implementation, the accommodating cavity is used to accommodate a plurality of the battery cells, which are stacked and arranged along the first direction.

[0022] As an optional implementation, the first shell side plate has a hollow cavity extending through the first shell side plate along the opening depth direction;

[0023] The hollow cavity is provided with a first connecting rib, and the first connecting rib and part of the inner wall of the hollow cavity form an alignment hole.

[0024] As an optional implementation, the shell plate is provided with a docking structure for connecting with the module bracket of the battery cell module.

[0025] As an optional implementation, the docking structure includes a docking protrusion located on the side of the shell plate near the opening.

[0026] As an optional implementation, the docking structure includes a docking hole, the opening of which is located on the side of the shell plate near the opening.

[0027] As an optional implementation, the first shell side plate has a hollow cavity extending through the first shell side plate along the opening depth direction;

[0028] A second connecting rib is provided inside the hollow cavity, and the second connecting rib and part of the inner wall of the hollow cavity form the docking hole.

[0029] As an optional implementation, the cross-section of the mating hole has a straight edge.

[0030] As an optional implementation, the cross-section of the mating hole is a semi-circular cross-section; the straight side of the semi-circular cross-section is parallel to the surface of the first shell side plate.

[0031] As an optional implementation, the docking structure is disposed on the first shell side plate;

[0032] Along the first direction, the docking structures on the two oppositely arranged first shell side plates are arranged opposite each other or staggered.

[0033] As an optional implementation, the surface of the first shell side plate is provided with a first connection hole;

[0034] The battery cell housing includes a second shell side plate and a first fastener. The second shell side plate is provided with a second connection hole, and the first fastener passes through the first connection hole and the second connection hole.

[0035] As an optional implementation, the first shell side plate has a hollow cavity extending through the first shell side plate along the opening depth direction;

[0036] A first reinforcing rib is provided inside the hollow cavity, the first reinforcing rib extends along the depth direction of the opening, and the first fastener passes through the first reinforcing rib.

[0037] As an optional implementation, a portion of the first reinforcing rib is stacked on the inner wall of one side of the hollow cavity, and the end of the first reinforcing rib is connected to the inner wall of the other side of the hollow cavity.

[0038] As an optional implementation, the cross-section of the first reinforcing rib perpendicular to the opening depth direction is a first fan-shaped section, and the outer ring edge of the first fan-shaped section is connected to the inner wall of one side of the hollow cavity.

[0039] As an optional implementation, the surface of the first shell side plate is provided with a third connecting hole.

[0040] The cell housing includes a second fastener, which passes through the third connection hole and is used to connect to the module housing of the cell module.

[0041] As an optional implementation, the first shell side plate has a hollow cavity extending through the first shell side plate along the opening depth direction;

[0042] A second reinforcing rib is provided inside the hollow cavity, the second reinforcing rib extends along the depth direction of the opening, and the second fastener passes through the second reinforcing rib.

[0043] As an optional implementation, a portion of the second reinforcing rib is stacked with the inner wall of one side of the hollow cavity, and the end of the second reinforcing rib is connected to the inner wall of the other side of the hollow cavity.

[0044] As an optional implementation, the cross-section of the second reinforcing rib perpendicular to the opening depth direction is a second fan-shaped section, and the outer ring edge of the second fan-shaped section is connected to the inner wall of one side of the hollow cavity.

[0045] As an optional implementation, along the second direction, the side edge of the first shell side plate is recessed towards the direction of the battery cell to form a recessed platform;

[0046] The cell housing includes the second housing side plate;

[0047] The second shell side plate is bent along the side edge in the first direction toward the direction of the battery cell to form a bent plate; the bent plate is fitted and connected to the bottom surface of the recessed platform;

[0048] The second direction is perpendicular to the depth direction of the opening and intersects with the first direction.

[0049] As an optional implementation, the cell housing includes the first fastener; the bottom surface of the recess is provided with the first connecting hole;

[0050] The bent plate is provided with a second connecting hole, and the first fastener passes through the first connecting hole and the second connecting hole;

[0051] The height of the first fastener protruding from the bottom surface of the recess on the side opposite to the battery cell is less than the depth of the recess.

[0052] Secondly, this application provides a battery cell module, the battery cell module including a battery cell housing and a battery cell as described in any of the first aspects above, the battery cell being located inside the battery cell housing.

[0053] Thirdly, this application provides a battery cell module, which includes the battery cell module and module housing described in the second aspect above, wherein the battery cell module is located inside the module housing.

[0054] As an optional implementation, the battery cell module includes a module bracket for detachably connecting to a plurality of the battery cell modules.

[0055] As an optional implementation, the module bracket is provided with a docking adapter structure, which is used for detachable connection with the docking structure.

[0056] As an alternative implementation, each of the battery cell modules is detachably connected to the module bracket at least in one place.

[0057] As an optional implementation, the module housing includes an interconnected outer shell base plate and a first outer shell side plate. The edge of the outer shell base plate is provided with two layers of clamping plates, and the edge of the first outer shell side plate is detachably clamped between the two layers of clamping plates.

[0058] As an optional implementation, the edge of the first outer shell side plate is provided with a cantilever plate, the surface of which is parallel to the surface of the outer shell bottom plate, and the cantilever plate is detachably clamped between the two layers of clamping plates.

[0059] Fourthly, this application provides an electrical device, which includes the battery cell module described in any of the third aspects above.

[0060] Compared with the prior art, the beneficial effects of this application are at least as follows:

[0061] The battery cell housing comprises multiple shell plates that enclose an open cavity to house the battery cell. This design protects the battery cell. When the battery cell is located within the cavity, its electrodes are on the same side as the opening. This facilitates connection between the electrodes and connectors.

[0062] Because at least one shell plate has an alignment structure on the side near the opening, this alignment structure is used for the connection and alignment of the battery cells. Thus, during the production of the battery cell module, when the connecting device emits light towards the opening side of the battery cell module, the connecting device can identify the position of this alignment structure and use its position as a reference to determine the connection position between the connector and the battery cell. This reduces the deviation between the connector and the electrode connection position, thereby improving the production quality of the battery cell module.

[0063] Specifically, when light shines on the alignment structure, the connecting device can identify its position. Then, the connecting device can establish a virtual coordinate system using the alignment structure's position as the origin. Next, the connecting device can calculate the predetermined coordinates for the connection between the connector and the battery cell based on the pre-set dimensions of the battery cell and electrodes. Finally, the connecting device can move the connector to connect with the battery cell according to these predetermined coordinates. This method of connecting the connector to the battery cell ensures a more accurate connection position and reduces deviations in the connection position between the connector and the battery cell. Attached Figure Description

[0064] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0065] Figure 1 is an exploded view of a battery cell housing provided in an embodiment of this application;

[0066] Figure 2 is a structural schematic diagram of the first shell side plate in Figure 1 along the cross-section perpendicular to the opening depth direction;

[0067] Figure 3 is a schematic diagram of a battery cell module provided in an embodiment of this application;

[0068] Figure 4 is an exploded view of the battery cell module in Figure 3;

[0069] Figure 5 is a schematic diagram of the structure when the busbar is connected to the electrode of the battery cell in the battery cell module;

[0070] Figure 6 is an exploded view of a battery cell module provided in an embodiment of this application;

[0071] Figure 7 is a schematic diagram of the structure when the docking structure on the first shell side plate and the docking adapter structure on the module bracket are about to dock.

[0072] Figure 8 is a structural schematic diagram of the connection position between the bottom plate of the outer shell and the first side plate of the outer shell in the module housing.

[0073] Explanation of reference numerals in the attached drawings: 100-Cell module, 120-Module bracket, 121-Mating adapter structure, 130-Module housing, 131-Housing base plate, 1311-Clamping plate, 132-First housing side plate, 1321-Hanging plate, 133-Second housing side plate, 134-Housing top plate, 140-Grip part, 150-Insulation layer, 110-Cell module, 112-Cell, 1121-Positive electrode, 1122-Negative electrode, 113-Connector. 111-Cell housing, 1111-Shell plate, 1112-First shell side plate, 11121-Alignment structure, 111211-Optical component, 11122-Hollow cavity, 11123-First connecting rib, 11124-Butt structure, 11125-Second connecting rib, 11126-First connecting hole, 11127-First reinforcing rib, 11128-Third connecting hole, 11129-Second reinforcing rib, 111210-Recess, 1113-Accommodating cavity, 11131-Opening, 1114-Second shell side plate, 11141-Second connecting hole, 11142-Bent plate, 1115-First fastener, 1116-Second fastener. Detailed Implementation

[0074] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0075] In the prior art, battery cell modules generally include multiple battery cells and multiple connecting pieces, with the multiple battery cells arranged to form a battery cell assembly. On the same side of the battery cell assembly, each battery cell has a positive terminal and a negative terminal. The positive terminal of one battery cell and the negative terminal of the adjacent battery cell are simultaneously soldered to a connecting piece.

[0076] During the production of this battery module, when welding the positive terminal of one cell and the negative terminal of an adjacent cell to a connecting piece at the same time, a photographic device is generally used to take a picture of the side of the cell module with electrodes to identify the positions of the positive and negative terminals that need to be connected by the connecting piece; then a clamping device is used to move the connecting piece to the positions of the positive and negative terminals; finally, a welding device is used to weld the connecting piece to the terminals.

[0077] However, because the terminals of a battery cell are generally quite large, the area identified by the imaging device is also quite large, making it difficult to pinpoint the alignment point within that area. Therefore, during the production of this battery cell module, the imaging device has a significant error in identifying the terminal position, leading to substantial deviations in the connection positions of the positive and negative terminals when connecting to the connector, resulting in poor quality battery cell modules.

[0078] Furthermore, in existing technologies, the welding device needs to perform welding at a reference position on the battery module casing. If this reference position is large, the welding area also needs to be increased, making welding inconvenient; if the reference position is small, it is difficult to identify. This reduces the production efficiency of the battery module.

[0079] To address the aforementioned technical issues, the battery cell housing provided in this application includes an alignment structure on at least one shell plate, located on the side of the shell plate closest to the opening. When a connecting device emits light towards the opening side of the battery cell module, the position of the alignment structure can be identified, and the connection position between the connector and the battery cell can be determined based on the position of the alignment structure. This reduces the deviation between the connector and the electrode connection position, thereby improving the production quality of the battery cell module.

[0080] Furthermore, when using this cell housing to produce cell modules, different cells are connected by the alignment structure on the cell housing as the reference position, eliminating the need for welding on the cell housing, thus improving the production efficiency of cell modules.

[0081] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0082] The following provides a detailed description of the specific structure of the aforementioned battery cell casing and various possible implementation methods.

[0083] Figure 1 is an exploded view of a battery cell housing 111 provided in an embodiment of this application. Figure 2 is a structural schematic diagram of the first shell side plate 1112 in Figure 1 along the cross-section perpendicular to the depth direction of the opening 11131. Figure 3 is a structural schematic diagram of a battery cell module 110 provided in an embodiment of this application. Figure 4 is an exploded view of the battery cell module 110 in Figure 3.

[0084] Referring to Figures 1, 2, 3, and 4, the battery cell housing 111 includes multiple shell plates 1111, which together form a receiving cavity 1113 with an opening 11131. The receiving cavity 1113 is used to accommodate the battery cell 112. When the battery cell 112 is located within the receiving cavity 1113, the electrodes of the battery cell 112 are located on the same side as the opening 11131. At least one shell plate 1111 has an alignment structure 11121 on the side near the opening 11131, which is used for the connection and alignment of the battery cell 112.

[0085] In this embodiment, the battery cell housing 111 includes multiple shell plates 1111, which together form a receiving cavity 1113 with an opening 11131. The receiving cavity 1113 is used to accommodate the battery cell 112. Thus, the battery cell housing 111 can protect the battery cell 112. Furthermore, when the battery cell 112 is located within the receiving cavity 1113, the electrodes of the battery cell 112 are on the same side as the opening 11131. This facilitates the connection between the electrodes of the battery cell 112 and the connector 113.

[0086] Since at least one shell plate 1111 has an alignment structure 11121 on the side near the opening 11131, the alignment structure 11121 is used for the connection and alignment of the battery cell 112. Thus, during the production of the battery cell module 110, when the connecting device emits light towards the opening 11131 side of the battery cell module 110, the connecting device can identify the position of the alignment structure 11121 and determine the connection position between the connector 113 and the battery cell 112 based on the position of the alignment structure 11121. This reduces the deviation between the connection position of the connector 113 and the electrode, thereby improving the production quality of the battery cell module 110.

[0087] Specifically, when light shines on the alignment structure 11121, the connecting device can identify the position of the alignment structure 11121; the connecting device can establish a virtual coordinate system with the position of the alignment structure 11121 as the origin; the connecting device can calculate the set position coordinates of the connection between the connector 113 and the battery cell 112 based on the pre-set dimensions of the battery cell 112 and the electrodes inside; then the connecting device can move the connector 113 to connect with the battery cell 112 according to the set position coordinates. Connecting the connector 113 and the battery cell 112 using the above method can make the connection position more accurate and reduce the deviation of the connection position between the connector 113 and the battery cell 112.

[0088] It should be noted that the connection between the connector 113 and the battery cell 112 can be welding, bolting, or other connection methods, and this application embodiment does not limit this.

[0089] It should also be noted that the aforementioned connector 113 may be a busbar or a wire, or other components that require positioning and connection. This application embodiment does not limit this.

[0090] It should also be noted that the aforementioned connection device includes a light-generating component, a control component, and a clamping component. The light-generating component is used to emit light, identify the position of the alignment structure 11121, and generate positioning information. Both the light-generating component and the clamping component are electrically connected to the control component. The control component is used to acquire this positioning information and generate connection position information, and issue command information to the clamping component based on the connection position information. The clamping component is used to receive the command information, and then clamp and move the connector 113 according to the command information, connecting the connector 113 to the battery cell 112.

[0091] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the alignment structure 11121 is an alignment hole formed on the shell plate 1111; the alignment hole penetrates the shell plate 1111 along the depth direction of the opening 11131 (Z direction in Figure 1).

[0092] When light shines on the alignment hole, it identifies the structure within the hole, allowing the connecting device to pinpoint its location. Compared to placing the structure to be identified on the outer surface of the cell housing 111, the alignment hole protects the structure, making it less susceptible to contamination. Furthermore, when the connecting device emits light to illuminate the cell housing 111, it can more easily identify the structure, resulting in more accurate identification of the alignment hole's location and thus a more precise connection between the connector 113 and the cell 112.

[0093] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, an optical element 111211 is provided in the alignment hole.

[0094] Since the alignment hole is identified by the principle of light illumination, the optical element 111211 inside the alignment hole makes it easier to identify.

[0095] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the optical element 111211 is a reflective element, and the light reflected by the reflective element is different from the light reflected from other positions of the battery cell housing 111 except for the alignment hole.

[0096] In this way, the connection device can more easily identify the position of the alignment hole based on the different light reflected back from the battery cell housing 111.

[0097] It should be noted that the reflective plane of the aforementioned reflector is perpendicular to the axis of the alignment hole. This connecting device emits a parallel light beam, the direction of which is parallel to the axial direction of the alignment hole. Light entering the alignment hole is reflected by the reflector, and the resulting reflected light exits the alignment hole along its axial direction until it reaches the reflected light receiving section of the connecting device, thus allowing the position of the alignment hole to be identified.

[0098] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the reflector is disposed on the wall of the alignment hole.

[0099] This makes the reflector more firmly connected to the alignment hole, thereby making the structure of the battery cell housing 111 more stable.

[0100] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the optical element 111211 is a light-absorbing element.

[0101] When light shines on the alignment hole, it is absorbed, so the reflected light received by the connection device from the alignment hole is less than the light emitted into the alignment hole. Therefore, the connection device can identify the position of the alignment hole.

[0102] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the light-absorbing element is disposed on the wall of the alignment hole.

[0103] This allows the light-absorbing element to be more firmly connected to the alignment hole, thereby making the structure of the battery cell housing 111 more stable.

[0104] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the alignment structure 11121 is an alignment groove formed on the shell plate 1111; the alignment groove extends along the depth direction of the opening 11131.

[0105] When light shines on the alignment slot, it identifies the structure to be identified within the slot, allowing the connecting device to pinpoint its location. Compared to placing the structure to be identified on the outer surface of the cell housing 111, the alignment slot protects the structure, making it less susceptible to contamination. Furthermore, when the connecting device emits light to illuminate the cell housing 111, it can more easily identify the structure, resulting in more accurate identification of the alignment slot's location and thus a more precise connection between the connector 113 and the cell 112.

[0106] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, an optical element 111211 is provided in the alignment groove.

[0107] Since the alignment slot is identified by the principle of light illumination, the optical element 111211 is placed inside the alignment slot, making it easier to identify.

[0108] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the optical element 111211 is a reflective element, and the light reflected by the reflective element is different from the light reflected by other positions of the battery cell housing 111 except for the alignment slot.

[0109] This allows the connecting device to more easily identify the position of the alignment slot based on the different light reflected back from the cell casing 111.

[0110] It should be noted that the reflective plane of the aforementioned reflector is perpendicular to the depth direction of the alignment groove. This connecting device emits a parallel light beam, the direction of which is parallel to the depth direction of the alignment groove. Light entering the alignment groove is reflected by the reflector, and the resulting reflected light travels along the depth direction of the alignment groove out of the groove until it reaches the reflected light receiving unit of the connecting device, thus allowing the position of the alignment groove to be identified.

[0111] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the reflector is disposed on the groove wall of the alignment groove.

[0112] This allows the reflector to be more firmly connected to the alignment groove, thereby making the structure of the battery cell housing 111 more stable.

[0113] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the optical element 111211 is a light-absorbing element.

[0114] When light shines on the alignment slot, it is absorbed, so the reflected light received by the connecting device from the alignment slot is less than the light emitted into the alignment slot. Therefore, the connecting device can identify the position of the alignment slot.

[0115] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the light-absorbing element is disposed on the wall of the alignment groove.

[0116] This allows the light-absorbing element to be more firmly connected to the alignment groove, thereby making the structure of the battery cell housing 111 more stable.

[0117] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the docking structure 11124 is an alignment protrusion provided on the shell plate 1111, and the outer surface of the alignment protrusion is provided with an optical element 111211.

[0118] Compared to setting alignment holes and alignment grooves on the shell plate 1111, setting alignment protrusions on the shell plate 1111 reduces the cavity structure on the shell plate 1111, which makes the shell plate 1111 stronger and thus enhances the strength of the cell shell 111.

[0119] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the optical element 111211 is a reflective element, and the light reflected by the reflective element is different from the light reflected by other positions of the battery cell housing 111 except for the alignment protrusion.

[0120] This allows the connecting device to more easily identify the position of the alignment protrusion based on the different light reflected back from the cell casing 111.

[0121] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the optical element 111211 is a light-absorbing element.

[0122] When light shines on the alignment protrusion, it is absorbed, so the reflected light received by the connection device from the alignment protrusion is less than the light emitted to it. Therefore, the connection device can identify the position of the alignment protrusion.

[0123] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the number of alignment structures 11121 is at least two, and the at least two alignment structures 11121 are spaced apart on the same shell plate 1111.

[0124] In this way, when the connecting device emits light, it can identify at least two alignment structures 11121, which are located at different positions on the shell plate 1111. Compared to a solution with only one alignment structure 11121, the virtual coordinate system determined by the positions of at least two alignment structures 11121 is more accurate. This, in turn, makes the connection position between the connector 113 and the battery cell 112 more accurate.

[0125] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, and 4, the plurality of shell plates 1111 include a first shell side plate 1112, which extends along the depth direction of the opening 11131. An alignment structure 11121 is disposed at the end of the first shell side plate 1112 near the opening 11131.

[0126] Since the light emitted by the connecting device directly illuminates the opening 11131 side of the cell housing 111, by placing the alignment structure 11121 at the end of the first housing side plate 1112 near the opening 11131, the alignment structure 11121 can more easily receive the light emitted by the connecting device, thereby facilitating the identification of the alignment structure 11121 by the connecting device.

[0127] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the number of first shell side plates 1112 is at least two, and the at least two first shell side plates 1112 are arranged opposite to each other.

[0128] Specifically, the battery cell 112 is sandwiched between two opposing first housing side plates 1112. This better protects the battery cell 112 and extends the service life of the battery cell module 110.

[0129] Furthermore, since each first shell side plate 1112 is provided with an alignment structure 11121, the relative positions on the outside of the aforementioned battery cell 112 have different alignment structures 11121. This makes the determined virtual coordinate system more accurate. Consequently, the connection position between the connector 113 and the battery cell 112 is more accurate.

[0130] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the accommodating cavity 1113 is used to accommodate a plurality of battery cells 112, which are stacked and arranged along a first direction (X direction in Figure 1); at least two first shell side plates 1112 are disposed opposite each other along the first direction.

[0131] Since the accommodating cavity 1113 is used to accommodate multiple battery cells 112, the battery cell module 110 manufactured using this battery cell housing 111 has multiple battery cells 112. This increases the capacity of a single battery cell module 110.

[0132] Furthermore, since multiple battery cells 112 are stacked and arranged along the first direction, the connectors 113 are also arranged along the first direction. At least two first shell side plates 1112 are positioned opposite each other along the first direction, so the alignment structure 11121 is also positioned opposite each other along the first direction. In this case, the virtual coordinate system established with the oppositely positioned alignment structure 11121 as a reference facilitates the positioning of the connectors 113 when connecting to the battery cells 112.

[0133] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, and 4, the first shell side plate 1112 has a hollow cavity 11122 extending through the first shell side plate 1112 along the depth direction of the opening 11131. A first connecting rib 11123 is provided inside the hollow cavity 11122, and the first connecting rib 11123 and part of the inner wall of the hollow cavity 11122 enclose an alignment hole.

[0134] Since the first shell side plate 1112 has a hollow cavity 11122 extending through the depth direction of the opening 11131, the material used in the first shell side plate 1112 can be reduced, thereby reducing the weight of the first shell side plate 1112 and lowering the manufacturing cost of the first shell side plate 1112. In addition, it is also beneficial to the lightweight design of the battery cell module 110. Furthermore, since the alignment hole is formed by the first connecting rib 11123 and part of the inner wall of the hollow cavity 11122, the mating hole can be formed in one step by a mold, thereby reducing the production cost of the first shell side plate 1112.

[0135] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the shell plate 1111 is provided with a docking structure 11124, which is used to connect with the module support 120 of the battery cell module 100.

[0136] The mating structure 11124 of the shell plate 1111 is advantageous for connecting multiple cell modules 110 into a whole through the module bracket 120, thereby enhancing the integrity of the cell module 100.

[0137] As an alternative implementation, in some embodiments, referring to Figures 1, 2, 3 and 4, the docking structure 11124 includes a docking protrusion located on the side of the shell plate 1111 near the opening 11131.

[0138] Since the module bracket 120 is mated to the side of the shell plate 1111 near the opening 11131, placing the mating protrusion on the side of the shell plate 1111 near the opening 11131 allows the shell plate 1111 to smoothly mate with the module bracket 120. At this time, a recessed portion is provided at a corresponding position on the module bracket 120, and this recessed portion is interference-fitted with the mating protrusion.

[0139] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4 and 7, the docking structure 11124 includes a docking hole, the opening of which is located on the side of the shell plate 1111 near the opening 11131.

[0140] Since the module bracket 120 is mated to the side of the shell plate 1111 near the opening 11131, setting the mating hole on the side of the shell plate 1111 near the opening 11131 allows the shell plate 1111 to smoothly mate with the module bracket 120. At this time, a protrusion is provided at the corresponding position on the module bracket 120, and the protrusion is interference-fitted with the mating hole.

[0141] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4, and 7, the first shell side plate 1112 has a hollow cavity 11122 extending through the first shell side plate 1112 along the depth direction of the opening 11131. A second connecting rib 11125 is provided inside the hollow cavity 11122, and the second connecting rib 11125 and part of the inner wall of the hollow cavity 11122 enclose a mating hole.

[0142] Since the first shell side plate 1112 has a hollow cavity 11122 extending through the depth direction of the opening 11131, the material used in the first shell side plate 1112 can be reduced, thereby reducing the weight of the first shell side plate 1112 and lowering the manufacturing cost of the first shell side plate 1112. In addition, it is also beneficial to the lightweight design of the battery cell module 110. Furthermore, since the mating hole is formed by the second connecting rib 11125 and part of the inner wall of the hollow cavity 11122, the mating hole can be formed in one step by a mold, thereby reducing the production cost of the first shell side plate 1112.

[0143] As an alternative implementation, in some embodiments, referring to Figures 1, 2, 3, 4 and 7, the cross-section of the mating hole has a straight edge.

[0144] In this way, when the docking hole is connected to the protrusion on the module bracket 120, the protrusion on the module bracket 120 can be prevented from rotating around the axis of the docking hole, thereby making the structure of the battery cell module 110 more stable.

[0145] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4, and 7, the cross-section of the mating hole is a semi-circular section; the straight edge of the semi-circular section is parallel to the surface of the first shell side plate 1112. In this case, the second connecting rib 11125 corresponding to the mating hole is a semi-circular arc rib, the rib surface of which is connected to the inner side of one surface of the first shell side plate 1112, and the other end of which is connected to the inner side of the other surface of the first shell side plate 1112.

[0146] Since the semi-circle has high stability, this can improve the rigidity of the first shell side plate 1112, thereby improving the overall rigidity of the cell shell 111.

[0147] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4 and 7, the docking structure 11124 is disposed on the first shell side plate 1112. Along the first direction, the docking structures 11124 on the two oppositely disposed first shell side plates 1112 are disposed opposite each other or staggered.

[0148] Along the first direction, docking structures 11124 are provided on both sides of the cell housing 111. At least one side of each docking structure 11124 on both sides of the cell housing 111 is connected to the module support 120. Specifically, both docking structures 11124 on both sides can be connected to the module support 120, or only one side of each docking structure 11124 can be connected to the module support 120. This makes the structure of the cell module 100 formed by connecting multiple cell modules 110 more stable.

[0149] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4, and 7, the surface of the first shell side plate 1112 is provided with a first connecting hole 11126. The cell housing 111 includes a second shell side plate 1114 and a first fastener 1115. The second shell side plate 1114 is provided with a second connecting hole 11141, and the first fastener 1115 passes through the first connecting hole 11126 and the second connecting hole 11141.

[0150] Specifically, there are two second shell side plates 1114, which are arranged opposite to each other, and there are also two first shell side plates 1112. The first shell side plates 1112 and the second shell side plates 1114 can be connected by the first fastener 1115 to form an accommodating cavity 1113.

[0151] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4, and 7, the first shell side plate 1112 has a hollow cavity 11122 extending through the first shell side plate 1112 along the depth direction of the opening 11131. A first reinforcing rib 11127 is provided in the hollow cavity 11122, extending along the depth direction of the opening 11131, and a first fastener 1115 passes through the first reinforcing rib 11127.

[0152] Because the first shell side plate 1112 has a hollow cavity 11122 extending through the opening 11131 in the depth direction of the first shell side plate 1112, the material used in the first shell side plate 1112 can be reduced, thereby reducing the weight of the first shell side plate 1112 and lowering the manufacturing cost of the first shell side plate 1112. In addition, it is also beneficial to the lightweight design of the battery cell module 110. Because a first reinforcing rib 11127 is provided in the hollow cavity 11122, and a first fastener 1115 passes through the first reinforcing rib 11127, the connection area between the first shell side plate 1112 and the first fastener 1115 is increased, so that the connection between the first shell side plate 1112 and the second shell side plate 1114 is more secure, thus making the structure of the battery cell housing 111 more stable.

[0153] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4 and 7, a portion of the rib surface of the first reinforcing rib 11127 is stacked with the inner wall of one side of the hollow cavity 11122, and the end of the first reinforcing rib 11127 is connected to the inner wall of the other side of the hollow cavity 11122.

[0154] This increases the connection area between the first shell side plate 1112 and the first fastener 1115, making the connection between the first shell side plate 1112 and the second shell side plate 1114 more secure, thus making the structure of the battery cell shell 111 more stable.

[0155] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4 and 7, the cross-section of the first reinforcing rib 11127 perpendicular to the depth direction of the opening 11131 is a first fan-shaped section, and the outer ring edge of the first fan-shaped section is connected to the inner wall of one side of the hollow cavity 11122.

[0156] Since the fan-shaped ring has high stability, this can improve the rigidity of the first shell side plate 1112, thereby improving the overall rigidity of the cell shell 111.

[0157] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4 and 7, the surface of the first shell side plate 1112 is provided with a third connection hole 11128, and the cell shell 111 includes a second fastener 1116, which passes through the third connection hole 11128 and is used to connect with the module shell 130 of the cell module 100.

[0158] In this way, the first shell side plate 1112 can be connected to the module shell 130 by the second fastener 1116, and then the cell module 110 can be connected to the module shell 130, thus making the structure of the formed cell module 100 more stable.

[0159] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4, and 7, the first shell side plate 1112 has a hollow cavity 11122 extending through the first shell side plate 1112 along the depth direction of the opening 11131. A second reinforcing rib 11129 is provided in the hollow cavity 11122, extending along the depth direction of the opening 11131, and a second fastener 1116 passes through the second reinforcing rib 11129.

[0160] Because the first shell side plate 1112 has a hollow cavity 11122 extending through the opening 11131 in the depth direction of the first shell side plate 1112, the material used in the first shell side plate 1112 can be reduced, thereby reducing the weight of the first shell side plate 1112 and lowering the manufacturing cost of the first shell side plate 1112. In addition, it is also beneficial to the lightweight design of the cell module 110. Because a second reinforcing rib 11129 is provided in the hollow cavity 11122, and the second fastener 1116 passes through the second reinforcing rib 11129, the connection area between the first shell side plate 1112 and the second fastener 1116 is increased, so that the connection between the first shell side plate 1112 and the module housing 130 is more secure, and the structure of the cell module 100 formed after connection is more stable.

[0161] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4 and 7, the rib surface of the second reinforcing rib 11129 is stacked with the inner wall of one side of the hollow cavity 11122, and the end of the second reinforcing rib 11129 is connected to the inner wall of the other side of the hollow cavity 11122.

[0162] This increases the connection area between the first shell side plate 1112 and the second fastener 1116, making the connection between the first shell side plate 1112 and the module housing 130 more secure, thus making the structure of the battery cell module 100 formed after connection more stable.

[0163] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4 and 7, the cross-section of the second reinforcing rib 11129 perpendicular to the depth direction of the opening 11131 is a second fan-shaped section, and the outer ring edge of the second fan-shaped section is connected to the inner wall of one side of the hollow cavity 11122.

[0164] Since the fan-shaped ring has high stability, this can improve the rigidity of the first shell side plate 1112, thereby improving the overall rigidity of the cell shell 111.

[0165] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4, and 7, the side edge of the first shell side plate 1112 is recessed towards the battery cell 112 along a second direction (the Y direction in Figure 1) to form a recess 111210. The battery cell housing 111 includes a second shell side plate 1114. The second shell side plate 1114 is bent towards the battery cell 112 along its side edge in the first direction to form a bent plate 11142; the bent plate 11142 is fitted and connected to the bottom surface of the recess 111210.

[0166] When the bent plate 11142 of the second shell side plate 1114 is fitted and connected to the bottom surface of the recess 111210 of the first shell side plate 1112, the height of the bent plate 11142 protruding from the first shell side plate 1112 can be reduced. This makes the shape of the battery cell housing 111 formed after connection more regular, which is convenient for the assembly of the battery cell module 100.

[0167] As an optional implementation, in some embodiments, referring to Figures 1, 2, 3, 4, and 7, the cell housing 111 includes a first fastener 1115; the bottom surface of the recess 111210 is provided with a first connecting hole 11126. The bent plate 11142 is provided with a second connecting hole 11141, and the first fastener 1115 passes through the first connecting hole 11126 and the second connecting hole 11141. The height of the first fastener 1115 protruding from the bottom surface of the recess 111210 on the side opposite to the cell 112 is less than the depth of the recess 111210.

[0168] In this way, when the first fastener 1115 passes through the first connecting hole 11126 and the second connecting hole 11141, the side of the first fastener 1115 away from the battery cell 112 will not protrude from the outer surface of the first shell side plate 1112, thereby making the shape of the battery cell shell 111 formed after connection more regular, which further facilitates the assembly of the battery cell module 100.

[0169] This application embodiment also provides a battery cell module 110, as shown in Figures 2, 3 and 4. The battery cell module 110 includes any of the above-mentioned battery cell housing 111 and battery cell 112, with the battery cell 112 located inside the battery cell housing 111.

[0170] Since the battery cell module 110 includes the battery cell housing 111, the battery cell housing 111 includes multiple shell plates 1111, and the multiple shell plates 1111 surround to form a receiving cavity 1113 with an opening 11131, the receiving cavity 1113 is used to receive the battery cell 112; when the battery cell 112 is located in the receiving cavity 1113, the electrodes of the battery cell 112 are located on the same side as the opening 11131. At least one shell plate 1111 is provided with an alignment structure 11121 on the side near the opening 11131, and the alignment structure 11121 is used for the connection and alignment of the battery cell 112.

[0171] Since at least one shell plate 1111 has an alignment structure 11121 on the side near the opening 11131, the alignment structure 11121 is used for the connection and alignment of the battery cell 112. Thus, during the production of the battery cell module 110, when the connecting device emits light towards the opening 11131 side of the battery cell module 110, the connecting device can identify the position of the alignment structure 11121 and determine the connection position between the connector 113 and the battery cell 112 based on the position of the alignment structure 11121. This reduces the deviation between the connection position of the connector 113 and the electrode, thereby improving the production quality of the battery cell module 110.

[0172] Specifically, when light shines on the alignment structure 11121, the connecting device can identify the position of the alignment structure 11121; then, the connecting device can establish a virtual coordinate system with the position of the alignment structure 11121 as the origin; then, the connecting device can calculate the set position coordinates of the connection between the connector 113 and the battery cell 112 based on the pre-set dimensions of the battery cell 112 and the electrodes inside; then, the connecting device can move the connector 113 to connect with the battery cell 112 according to the set position coordinates. Connecting the connector 113 and the battery cell 112 using the above method can make the connection position more accurate and reduce the deviation of the connection position between the connector 113 and the battery cell 112.

[0173] As an optional implementation, in some embodiments, referring to Figures 2, 3 and 4, the number of battery cells 112 is multiple, and the multiple battery cells 112 are arranged along a first direction.

[0174] This results in a larger capacity for the battery cell module 110. Specifically, the number of battery cells 112 can be two, three, or ten, or other numbers; this embodiment does not limit this.

[0175] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4 and 5, the cell module 110 includes a bus, and the electrodes of at least two cells 112 are connected to the bus.

[0176] The bus is used to connect the positive terminal 1121 of one battery cell 112 to the negative terminal 1122 of another battery cell 112.

[0177] It should be noted that the aforementioned busbar is one type of connector 113. The busbar can be made of copper or aluminum, or other materials; this application embodiment does not limit this.

[0178] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4 and 5, the battery cell 112 is provided with a positive electrode 1121 and a negative electrode 1122 on the side near the opening 11131; the positive electrode 1121 of one battery cell 112 and the negative electrode 1122 of the adjacent battery cell 112 are both connected to a busbar.

[0179] Since the battery cell 112 has a positive electrode 1121 and a negative electrode 1122 on the side near the opening 11131, it facilitates the connection of the busbar to the electrodes of the battery cell 112 from the opening 11131 side, thereby improving the production efficiency of the battery cell module 110. The positive electrode 1121 of one battery cell 112 and the negative electrode 1122 of an adjacent battery cell 112 are each connected to a busbar. Thus, two adjacent battery cells 112 can be connected in series through the connection of the busbars. When there are multiple busbars, multiple busbars can connect multiple battery cells 112 in series, thereby increasing the output voltage of the battery cell module 110.

[0180] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4 and 5, the multiple battery cells 112 have the same structure, the multiple battery cells 112 are arranged and connected sequentially along the first direction, and the multiple positive electrodes 1121 and the multiple negative electrodes 1122 are arranged alternately along the first direction.

[0181] The above-mentioned electrode arrangement can minimize the distance between the positive electrode 1121 of a battery cell 112 and the negative electrode 1122 of the adjacent battery cell 112, thereby reducing the length of the busbar and making the series circuit shorter to reduce power loss. In addition, it can also reduce the manufacturing cost of the busbar, thereby reducing the manufacturing cost of the battery cell module 110.

[0182] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4 and 5, the electrodes of at least two cells 112 are welded to the busbar.

[0183] This allows different battery cells 112 to be connected into a battery cell group via a bus. Specifically, in addition to the series connection method described above, multiple battery cells 112 can also be connected in parallel via a bus.

[0184] It should be noted that when the battery cell module 110 includes multiple battery cells 112 arranged sequentially along the first direction, the line connecting the alignment structures 11121 on the two first shell side plates 1112 coincides with the line connecting the centers of the multiple positive electrodes 1121 or the line connecting the centers of the multiple negative electrodes 1122. At this time, the cross-section of the alignment structure 11121 is a rectangular cross-section; the long side of the rectangular cross-section is parallel to the first direction.

[0185] This application embodiment also provides a battery cell module 100, as shown in Figures 2, 3, 4, 6 and 7. The battery cell module 100 includes any of the above-mentioned battery cell modules 110 and module housings 130, with the battery cell modules 110 located inside the module housings 130.

[0186] Since the battery cell module 110 includes a battery cell housing 111, the battery cell housing 111 includes multiple shell plates 1111, and the multiple shell plates 1111 surround to form a receiving cavity 1113 with an opening 11131, the receiving cavity 1113 is used to receive the battery cell 112; when the battery cell 112 is located in the receiving cavity 1113, the electrodes of the battery cell 112 are located on the same side as the opening 11131. At least one shell plate 1111 is provided with an alignment structure 11121 on the side near the opening 11131, and the alignment structure 11121 is used for the connection and alignment of the battery cell 112.

[0187] Since at least one shell plate 1111 has an alignment structure 11121 on the side near the opening 11131, the alignment structure 11121 is used for the connection and alignment of the battery cell 112. Thus, during the production of the battery cell module 110, when the connecting device emits light towards the opening 11131 side of the battery cell module 110, the connecting device can identify the position of the alignment structure 11121 and determine the connection position between the connector 113 and the battery cell 112 based on the position of the alignment structure 11121. This reduces the deviation between the connection position of the connector 113 and the electrode, thereby improving the production quality of the battery cell module 110 and consequently improving the production quality of the battery cell module 100.

[0188] Specifically, when light shines on the alignment structure 11121, the connecting device can identify the position of the alignment structure 11121; then, the connecting device can establish a virtual coordinate system with the position of the alignment structure 11121 as the origin; then, the connecting device can calculate the set position coordinates of the connection between the connector 113 and the battery cell 112 based on the pre-set dimensions of the battery cell 112 and the electrodes inside; then, the connecting device can move the connector 113 to connect with the battery cell 112 according to the set position coordinates. Connecting the connector 113 and the battery cell 112 using the above method can make the connection position more accurate and reduce the deviation of the connection position between the connector 113 and the battery cell 112.

[0189] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4, 6 and 7, the number of battery cell modules 110 is multiple.

[0190] Each of the battery cell modules 110 is identical. Therefore, when the capacity of the battery cell module 100 needs to be adjusted, this can be achieved by adjusting the number of battery cell modules 110 within the battery cell module 100. Specifically, when the capacity of the battery cell module 100 needs to be increased, the number of battery cell modules 110 can be increased; when the capacity of the battery cell module 100 needs to be decreased, the number of battery cell modules 110 can be decreased.

[0191] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4, 6 and 7, the outer wall of the module housing 130 is provided with a gripping part 140, which is used to withstand external forces to move the battery cell module 100.

[0192] When the battery module 100 needs to be moved, it can be done by clamping the gripping part 140. The gripping part 140 is made of insulating material, which can prevent the operator from getting an electric shock, thus improving the safety of the battery module.

[0193] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4, 6 and 7, the battery cell module 100 includes a module bracket 120 for detachable connection with a plurality of battery cell modules 110.

[0194] This allows multiple cell modules 110 to be connected as a whole, improving the structural stability of the cell module 100. Furthermore, connecting multiple cell modules 110 as a whole allows for the connection of a busbar to the whole assembly, which improves the efficiency of busbar connection compared to connecting individual cell modules 110, thereby increasing the production efficiency of the cell module 100.

[0195] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4, 6 and 7, the module bracket 120 is provided with a docking adapter structure 121, which is used for detachable connection with the docking structure 11124.

[0196] Specifically, the mating structure 121 can be a protrusion, in which case the mating structure 11124 on the first shell side plate 1112 is a mating hole or a mating groove; the mating structure 121 can also be a recess, in which case the mating structure 11124 on the first shell side plate 1112 is a mating protrusion. When the mating structure 121 is a protrusion, its cross-section has a straight edge. In this way, when the mating structure 121 is connected to the mating structure 11124 on the first shell side plate 1112, the mating structure 121 on the module bracket 120 can be prevented from rotating around the axis of the mating structure 11124, thereby making the structure of the battery cell module 110 more stable.

[0197] As an alternative implementation, in some embodiments, referring to Figures 2, 3, 4, 6 and 7, each cell module 110 is detachably connected to the module bracket 120 at least in one place.

[0198] This ensures that each cell module 110 can be connected to the module bracket 120, thereby ensuring that multiple cell modules 110 are connected as a whole, making the structure of the cell module 100 more stable.

[0199] It should be noted that each cell module 110 may be connected to the module bracket 120 at one, two, or more locations, but this embodiment does not limit this.

[0200] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4, 6 and 7, the battery cell module 100 includes an insulating layer 150, which is disposed between the side of the battery cell module 110 having electrodes and the inner wall of the module housing 130.

[0201] This prevents the module housing 130 from becoming electrified, thus avoiding electric shock to operators and improving the safety of the battery cell module 100.

[0202] It should be noted that the aforementioned insulating layer 150 can be a plastic sheet or a rubber sheet, or other insulating layers 150 with the same function. This application embodiment does not limit this.

[0203] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4, 6, 7 and 8, the module housing 130 includes an outer shell bottom plate 131 and a first outer shell side plate 132 connected to each other. The edge of the outer shell bottom plate 131 is provided with two layers of clamping plates 1311, and the edge of the first outer shell side plate 132 is detachably clamped between the two layers of clamping plates 1311.

[0204] In this way, when assembling the module housing 130, the bottom plate 131 and the first side plate 132 of the housing can be directly connected by splicing. Compared with the screw connection method, it can avoid inserting a screwdriver into the module housing 130, and thus avoid the danger to the operator caused by electric shock through the screwdriver. Therefore, the process of assembling the battery cell module 100 is safer. In addition, the splicing method is simpler, thereby improving the assembly efficiency of the battery cell module 100.

[0205] After the outer shell base plate 131 and the first outer shell side plate 132 are spliced, the splicing position needs to be welded. The length of the weld needs to be greater than 2 / 3 of the length of the clamping plate 1311, and the weld needs to include at least five weld segments, which should be evenly distributed along the length of the clamping plate 1311. The thickness of the outer shell base plate 131 and the first outer shell side plate 132 needs to be greater than 1.5mm.

[0206] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4, 6, 7 and 8, the edge of the first outer shell side plate 132 is bent toward the surface of the outer shell bottom plate 131 to form a cantilever plate 1321, and the cantilever plate 1321 is detachably clamped between two layers of clamping plates 1311.

[0207] When the bottom plate 131 and the first side plate 132 of the outer casing are spliced ​​together, a bent plate 11142 can be formed. This bent plate 11142 can be used at the edge of the module casing. This makes it easier to assemble the module casing, thus improving the assembly efficiency of the battery cell module 100.

[0208] As an optional implementation, in some embodiments, referring to Figures 2, 3, 4, 6, 7, and 8, there are two first outer shell side plates 132, which are arranged opposite each other along a second direction. The module housing 130 also includes two second outer shell side plates 133 and a top outer shell plate 134, with the two second outer shell side plates 133 arranged opposite each other along a first direction. The top outer shell plate 134 is arranged opposite to the bottom outer shell plate 131, and the bottom outer shell plate 131, the two first outer shell side plates 132, the two second outer shell side plates 133, and the top outer shell plate 134 together form the module housing 130.

[0209] This allows the module housing 130 to be formed by connecting and enclosing six plates, thus facilitating the assembly and disassembly of the module housing 130.

[0210] This application embodiment also provides an electrical device, as shown in FIG6, which includes any of the above-mentioned battery cell modules 100.

[0211] The electrical device includes a battery cell housing 111, which comprises multiple shell plates 1111. These shell plates enclose a receiving cavity 1113 with an opening 11131. The receiving cavity 1113 is used to accommodate the battery cell 112. When the battery cell 112 is located within the receiving cavity 1113, the electrodes of the battery cell 112 are located on the same side as the opening 11131. At least one shell plate 1111 has an alignment structure 11121 on the side near the opening 11131. The alignment structure 11121 is used for the connection and alignment of the battery cell 112.

[0212] Since at least one shell plate 1111 has an alignment structure 11121 on the side near the opening 11131, the alignment structure 11121 is used for the connection alignment of the battery cell 112. Thus, during the production of the battery cell module 110, when the connecting device emits light towards the opening 11131 side of the battery cell module 110, the connecting device can identify the position of the alignment structure 11121 and determine the connection position between the connector 113 and the battery cell 112 based on the position of the alignment structure 11121. This reduces the deviation between the connection position of the connector 113 and the electrode, thereby improving the production quality of the battery cell module 110, and consequently improving the production quality of the battery cell module 100, and thus improving the production quality of the electrical device.

[0213] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0214] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "one" can be understood to convey either singular or plural usage.

[0215] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something,” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “above something” or “on top of something,” but also “on something” or “on top of something” without an intermediate feature or layer therebetween, i.e., directly on something.

[0216] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations rotated 90° or be in other orientations, and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0217] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electric cell housing (111), characterized by, include: Multiple shell plates (1111) are arranged to form a receiving cavity (1113) with an opening (11131), the receiving cavity (1113) being used to receive a battery cell (112); when the battery cell (112) is located in the receiving cavity (1113), the electrodes of the battery cell (112) are located on the same side as the opening (11131); At least one of the shell plates (1111) is provided with an alignment structure (11121) on the side near the opening (11131), the alignment structure (11121) being used for the connection alignment of the battery cell (112).

2. The electric cell housing (111) according to claim 1, characterized in that The alignment structure (11121) is an alignment hole formed on the shell plate (1111); The alignment hole extends through the shell plate (1111) along the depth direction of the opening (11131).

3. The electric cell housing (111) according to claim 1, characterized in that The alignment structure (11121) is an alignment groove formed on the shell plate (1111); the alignment groove extends along the depth direction of the opening (11131).

4. The cell housing (111) of claim 1, characterized by The alignment structure (11121) is an alignment protrusion provided on the shell plate (1111).

5. The electric cell housing (111) according to claim 1, characterized in that The alignment structure (11121) is provided with an optical element (111211).

6. The electric cell housing (111) according to claim 5, characterized in that The optical component (111211) is a reflective component or a light-absorbing component.

7. The electric cell housing (111) according to claim 5, characterized in that When the alignment structure (11121) is an alignment hole, the optical element (111211) is disposed on the hole wall of the alignment hole; When the alignment structure (11121) is an alignment groove, the optical element (111211) is disposed on the groove wall of the alignment groove; When the alignment structure (11121) is an alignment protrusion, the optical element (111211) is disposed on the outer surface of the alignment protrusion.

8. The electric cell housing (111) according to claim 1, characterized in that The number of the alignment structures (11121) is at least two, and the at least two alignment structures (11121) are spaced apart on the same shell plate (1111).

9. The electric cell housing (111) according to claim 1, characterized in that The plurality of shell plates (1111) include a first shell side plate (1112) that extends along the depth direction of the opening (11131); The alignment structure (11121) is disposed at the end of the first shell side plate (1112) near the opening (11131).

10. The electric cell housing (111) according to claim 9, characterized in that The number of the first shell side plates (1112) is at least two, and the at least two first shell side plates (1112) are arranged opposite each other along a first direction; the first direction is perpendicular to the depth direction of the opening (11131).

11. The electric cell housing (111) according to claim 10, characterized in that The accommodating cavity (1113) is used to accommodate a plurality of the battery cells (112), which are stacked and arranged along the first direction.

12. The electric cell housing (111) according to claim 9, characterized in that The first shell side plate (1112) has a hollow cavity (11122) that extends through the first shell side plate (1112) along the depth direction of the opening (11131); A first connecting rib (11123) is provided inside the hollow cavity (11122), and the first connecting rib (11123) and part of the inner wall of the hollow cavity (11122) enclose each other to form an alignment hole.

13. The electric cell housing (111) according to claim 10, characterized in that The shell plate (1111) is provided with a docking structure (11124), which is used to connect with the module bracket (120) of the battery cell module (100).

14. The electric cell housing (111) according to claim 13, characterized in that The docking structure (11124) includes a docking protrusion located on the side of the shell plate (1111) near the opening (11131).

15. The electric cell housing (111) according to claim 13, characterized in that The docking structure (11124) includes a docking hole, the opening of which is located on the side of the shell plate (1111) near the opening (11131).

16. The electric cell housing (111) according to claim 15, characterized in that The first shell side plate (1112) has a hollow cavity (11122) that extends through the first shell side plate (1112) along the depth direction of the opening (11131); A second connecting rib (11125) is provided inside the hollow cavity (11122), and the second connecting rib (11125) and part of the inner wall of the hollow cavity (11122) enclose the docking hole.

17. The electric cell housing (111) of claim 15, characterized by The cross-section of the mating hole has a straight edge.

18. The electric cell housing (111) according to claim 17, characterized in that The cross-section of the docking hole is a semi-circular section; the straight side of the semi-circular section is parallel to the surface of the first shell side plate (1112).

19. The electric cell housing (111) according to claim 18, characterized in that The docking structure (11124) is disposed on the first shell side plate (1112); Along the first direction, the docking structures (11124) on the two first shell side plates (1112) are arranged opposite to each other or staggered.

20. The electric cell housing (111) of claim 10, characterized by The first shell side plate (1112) is provided with a first connecting hole (11126); The battery cell housing (111) includes a second housing side plate (1114) and a first fastener (1115). The second housing side plate (1114) is provided with a second connecting hole (11141), and the first fastener (1115) passes through the first connecting hole (11126) and the second connecting hole (11141).

21. The electric cell housing (111) according to claim 20, characterized in that The first shell side plate (1112) has a hollow cavity (11122) that extends through the first shell side plate (1112) along the depth direction of the opening (11131); The hollow cavity (11122) is provided with a first reinforcing rib (11127), the first reinforcing rib (11127) extends along the depth direction of the opening (11131), and the first fastener (1115) passes through the first reinforcing rib (11127).

22. The electric cell housing (111) according to claim 21, characterized in that A portion of the rib surface of the first reinforcing rib (11127) is stacked with the inner wall of one side of the hollow cavity (11122), and the end of the first reinforcing rib (11127) is connected to the inner wall of the other side of the hollow cavity (11122).

23. The electric cell housing (111) according to claim 22, characterized in that The cross section of the first reinforcing rib (11127) perpendicular to the depth direction of the opening (11131) is a first fan-shaped cross section, and the outer ring edge of the first fan-shaped cross section is connected to the inner wall of one side of the hollow cavity (11122).

24. The electric cell housing (111) of claim 20, characterized by The first shell side plate (1112) is provided with a third connecting hole (11128) on its surface. The cell housing (111) includes a second fastener (1116), which passes through the third connection hole (11128) and is used to connect to the module housing (130) of the cell module (100).

25. The electric cell housing (111) of claim 24, characterized by The first shell side plate (1112) has a hollow cavity (11122) that extends through the first shell side plate (1112) along the depth direction of the opening (11131); A second reinforcing rib (11129) is provided inside the hollow cavity (11122). The second reinforcing rib (11129) extends along the depth direction of the opening (11131), and the second fastener (1116) passes through the second reinforcing rib (11129).

26. The electric cell housing (111) according to claim 25, characterized in that A portion of the rib surface of the second reinforcing rib (11129) is stacked with the inner wall of one side of the hollow cavity (11122), and the end of the second reinforcing rib (11129) is connected to the inner wall of the other side of the hollow cavity (11122).

27. The electric cell housing (111) of claim 26, characterized by The cross section of the second reinforcing rib (11129) perpendicular to the depth direction of the opening (11131) is a second fan-shaped cross section, and the outer ring edge of the second fan-shaped cross section is connected to the inner wall of one side of the hollow cavity (11122).

28. The electric cell housing (111) of claim 20, characterized by Along the second direction, the side of the first shell side plate (1112) is recessed toward the battery cell (112) to form a recess (111210); The cell housing (111) includes the second housing side plate (1114); The second shell side plate (1114) is bent along the side of the first direction toward the cell (112) to form a bent plate (11142); the bent plate (11142) is attached to the bottom surface of the recess (111210); The second direction is perpendicular to the depth direction of the opening and intersects with the first direction.

29. The electric cell housing (111) of claim 28, characterized by The battery cell housing (111) includes the first fastener (1115); the bottom surface of the recess (111210) is provided with the first connecting hole (11126); The bent plate (11142) is provided with a second connecting hole (11141), and the first fastener (1115) passes through the first connecting hole (11126) and the second connecting hole (11141); The first fastener (1115) protrudes from the bottom surface of the recess (111210) on the side opposite to the battery cell (112) at a height less than the depth of the recess (111210).

30. An electrochemical cell module (110), characterized by: Includes the cell housing (111) and cell (112) as described in any one of claims 1-29, wherein the cell (112) is located within the cell housing (111).

31. An electrochemical cell module (100) comprising: Includes the cell module (110) and module housing (130) as described in claim 30, wherein the cell module (100) is located within the module housing (130).

32. The battery cell module (100) of claim 31, wherein, The battery cell module (100) includes a module bracket (120) for detachable connection with a plurality of the battery cell modules (110).

33. The electric cell module (100) of claim 32, characterized in that, The module bracket (120) is provided with a docking adapter structure (121), which is used to detachably connect with the docking structure (11124).

34. The electric cell module (100) of claim 33, characterized in that, Each of the battery cell modules (110) is detachably connected to the module bracket (120) at least in one place.

35. The battery cell module (100) of claim 31, wherein, The module housing (130) includes an outer shell bottom plate (131) and a first outer shell side plate (132) connected to each other. The edge of the outer shell bottom plate (131) is provided with two layers of clamping plates (1311), and the edge of the first outer shell side plate (132) is detachably clamped between the two layers of clamping plates (1311).

36. The electric cell module (100) of claim 35, characterized in that, The first outer shell side plate (132) is provided with a cantilever plate (1321) on its edge. The surface of the cantilever plate (1321) is parallel to the surface of the outer shell bottom plate (131). The cantilever plate (1321) is detachably clamped between the two layers of clamping plates (1311).

37. An electrical device, comprising: Includes the battery cell module (100) as described in any one of claims 31-36.

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