Battery unit, power battery and vehicle

Abstract

The utility model provides a battery unit, a power battery and a vehicle. The battery unit comprises at least two battery cells which are stacked along a first direction; the supporting structure comprises a plurality of partition plates and two side supporting components, the partition plates are arranged between every two adjacent battery cells, the two side supporting components are arranged in a spaced mode in the second direction, and the two ends, in the second direction, of each partition plate are connected with the two side supporting components correspondingly; the two side supporting components are respectively in contact connection with two sides of each battery cell along the second direction; the first direction is perpendicular to the second direction. According to the battery unit, the power battery and the vehicle provided by the invention, the integration and the energy density of the whole power battery can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a battery unit, a battery pack and a vehicle. BACKGROUND

[0002] As a core energy supply component of a new energy vehicle, the energy density level of a power battery is crucial to the endurance of the new energy vehicle.

[0003] A power battery includes a plurality of independent battery cells, each of which needs to be provided with a shell for protection. The more battery cells a power battery needs, the more shells it needs, resulting in poor overall integration of the power battery and affecting the energy density of the power battery. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a battery unit, a power battery and a vehicle, which can effectively improve the overall integration and energy density of the power battery.

[0005] The present application provides a battery unit, wherein the battery unit comprises:

[0006] at least two battery cells arranged along a first direction;

[0007] a support structure comprising at least one partition plate and two side support members, the partition plate being arranged between every two adjacent battery cells, the two side support members being arranged along a second direction, each partition plate being connected to the two side support members at both ends thereof along the second direction, and the two side support members being connected to the battery cells along both sides thereof along the second direction, respectively;

[0008] The first direction intersects the second direction.

[0009] The battery unit as described above, wherein the battery cell is provided with a positive electrode tab and a negative electrode tab; the side support member is provided with a plurality of perforations, each of which is provided for one positive electrode tab or one negative electrode tab.

[0010] The battery unit as described above, wherein the battery cell is provided with a positive electrode tab on one side thereof along the second direction and a negative electrode tab on the other side thereof along the second direction; the side support member is provided with a plurality of perforations, each of which is arranged along the first direction, and each of which is provided for one positive electrode tab or one negative electrode tab.

[0011] The battery unit as described above, wherein the battery unit further comprises:

[0012] a positive output member having a positive output end and a plurality of first connecting ends, each of which is connected to one positive electrode tab;

[0013] and / or a negative output member having a negative output end and a plurality of second connecting ends, each of the second connecting ends being connected with one of the negative tabs.

[0014] The battery cell as described above, wherein the positive output member comprises a first portion and a second portion connected with each other, each of the first connecting ends is formed on the first portion, the first portion is connected with one of the side support members, an included angle is formed between the first portion and the second portion, the second portion is located on one side of the at least part of the battery cell along a third direction and forms the positive output end.

[0015] and / or the negative output member comprises a third portion and a fourth portion connected with each other, each of the second connecting ends is formed on the third portion, the third portion is connected with another one of the side support members, an included angle is formed between the third portion and the fourth portion, the fourth portion is located on one side of the at least part of the battery cell along the third direction and forms the negative output end.

[0016] The first direction, the second direction and the third direction are perpendicular to each other in pairs.

[0017] The battery cell as described above, wherein the side support members are provided with embedding grooves, the first portion and the third portion are respectively embedded and clamped in the embedding grooves of the corresponding side support members.

[0018] The battery cell as described above, wherein the second portion and the fourth portion are located on the same side of the battery cell along the third direction.

[0019] The battery cell as described above, wherein the battery cell further comprises a support plate, the support plate is provided on a first side of the at least part of the battery cell along the third direction, the second portion and the fourth portion are respectively connected with the support plate.

[0020] The battery cell as described above, wherein a positioning groove is provided on a side of the support plate away from the battery cell, the second portion and the fourth portion are respectively embedded in the positioning groove, and the second portion and the fourth portion are arranged in a spaced manner.

[0021] The battery cell as described above, wherein a wire passing hole is formed on the support plate and penetrates through the third direction.

[0022] The application further provides a power battery, wherein the power battery comprises:

[0023] A housing assembly and the battery cell as described above, the battery cell is arranged in the interior of the housing assembly.

[0024] The power battery as described above, wherein the housing assembly comprises:

[0025] a shell;

[0026] a plurality of first baffles connected to an interior of the shell, the first baffles being parallel to each other and spaced apart along a first direction, and the interior space of the shell being divided into a plurality of independent cavities by the first baffles;

[0027] at least one battery cell is arranged in each of the cavities.

[0028] The power battery as described above, wherein a plurality of battery cells are arranged in each of the cavities, and the battery cells are arranged along a second direction.

[0029] The power battery as described above, wherein the shell assembly further comprises a plurality of second baffles, a plurality of second baffles are arranged in each of the cavities, the second baffles are parallel to each other and spaced apart along the second direction, and each of the cavities is divided into a plurality of independent sub-cavities by the plurality of second baffles, and one battery cell is arranged in each of the sub-cavities.

[0030] The application further provides a vehicle, wherein the vehicle comprises the power battery as described above.

[0031] The battery cell, the power battery and the vehicle provided by the embodiments of the application arrange at least two battery cells and support and position the battery cells by a support structure, the separator of the support structure can provide support and separation protection for the battery cells on at least one side of the battery cells in a first direction, and the side support member of the support structure can provide support for the battery cells on both sides of the battery cells in a second direction, and each battery cell is combined to form an integral whole for subsequent assembly, which can effectively improve the integration of the battery cell and the power battery, and the shell provided for each battery cell in the prior art is omitted, and the energy density of the battery cell and the power battery is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 a perspective structural schematic view of the battery cell provided by the embodiments of the application;

[0033] Figure 2 another perspective structural schematic view of the battery cell provided by the embodiments of the application;

[0034] Figure 3 an internal structural schematic view of the power battery provided by the embodiments of the application along a third direction;

[0035] Figure 4 an internal partial structural schematic view of the power battery provided by the embodiments of the application along a second direction.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 1, battery cell; 11, cell; 12, support structure; 121, partition; 122, side support member; 1221, embedding groove; 13, positive electrode output member; 131, first portion; 1311, first connecting end; 132, second portion; 1321, positive electrode output end; 14, negative electrode output member; 141, fourth portion; 1411, negative electrode output end; 15, support plate; 151, positioning groove; 152, wire passing hole;

[0038] 2, housing assembly; 21, outer shell; 211, bottom shell; 2111, protrusion; 212, shell cover; 22, first baffle; 23, second baffle; 24, bonding member;

[0039] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0040] In order to enable a more complete understanding of the above-mentioned objects, features and advantages of the present disclosure, the schemes of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0041] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other manners different from those described herein; obviously, the embodiments described in the specification are only a part of the embodiments of the present disclosure, and not all the embodiments.

[0042] It should be noted that, in this document, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprising", "having", "including", or any other variant thereof are intended to cover non-exclusive inclusion, such that processes, methods, articles, or devices that comprise a list of elements are not limited to those elements, but can include other elements not expressly listed or inherent to such processes, methods, articles, or devices. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or device including the element.

[0043] It should be noted that the words indicating the direction of the first direction X, the second direction Y and the third direction Z described in the present application are only for the convenience of the drawings to more clearly illustrate the specific structure of the present application, and the present application is not limited thereto. The first direction X, the second direction Y and the third direction Z have an included angle between each other. Alternatively, the first direction X, the second direction Y and the third direction Z are perpendicular to each other. The first direction X is a direction perpendicular to the large face of the battery cell 11, the second direction Y is a width direction of the large face of the battery cell 11, and the third direction Z is a height direction of the large face of the battery cell 11. Alternatively, when applied to a vehicle, the first direction X can be one of the length direction and the width direction of the vehicle, the second direction Y can be the other of the length direction and the width direction of the vehicle, and the third direction Z can be the height direction of the vehicle.

[0044] As shown in Figure 1 and Figure 2 The present application provides a battery unit 1, wherein the battery unit 1 comprises at least two battery cells 11 and a support structure 12.

[0045] Each battery cell 11 is arranged along the first direction X; for example, the battery cell 11 is a square soft-pack battery cell 11, which has a regular shape and can still form a regular cuboid structure (such as a cuboid structure with rounded corners) after arrangement, and can be arranged compactly to improve the integration.

[0046] Alternatively, the present application can also use cylindrical battery cells 11, blade battery cells 11 or other shaped battery cells 11 to compose the battery unit 1.

[0047] The support structure 12 comprises at least one partition plate 121 and two side support members 122, and each two adjacent battery cells 11 are provided with a partition plate 121, which can provide support and protection for the two battery cells 11 located on both sides thereof along the first direction X.

[0048] The two side support members 122 are spaced apart along the second direction Y, and each partition plate 121 is connected with the two side support members 122 at both ends thereof along the second direction Y. By arranging the side support members 122, the partition plates 121 can be connected to form an integrated support member, which effectively maintains the distance between the partition plates 121 to ensure that the partition plates 121 provide uniform and reliable support force for the battery cells 11 located on both sides thereof.

[0049] The two side support members 122 are respectively connected with the two sides of each battery cell 11 along the second direction Y, thereby providing support and protection for the battery cells 11 along the two sides thereof along the second direction Y.

[0050] Alternatively, the side support member 122 is in contact with the battery cell 11 to ensure that the side support member 122 provides reliable support for the battery cell 11.

[0051] The support member is made of insulating material, which provides reliable support for each battery cell 11 and improves the safety performance of each battery cell 1.

[0052] The battery cell 1 provided by the embodiment of the present application stacks at least two battery cells 11 and positions them by the support structure 12. The partition 121 of the support structure 12 can provide support and separation protection for the battery cell 11 on at least one side of the battery cell 11 in the first direction X. The side support member 122 of the support structure 12 can provide support for the battery cell 11 on both sides of the battery cell 11 in the second direction Y, and combine each battery cell 11 to form an integral whole for subsequent assembly, which can effectively improve the integration of the battery cell 1, and eliminate the shell provided for each battery cell 11 in the prior art, effectively improving the energy density of the battery cell 1.

[0053] The battery cell 1 provided by the present application, wherein the battery cell 11 is provided with a positive electrode tab and a negative electrode tab; the side support member 122 is provided with a plurality of perforations, each perforation is provided for one positive electrode tab or one negative electrode tab.

[0054] Specifically, the battery cell 1 provided by the present application, wherein the battery cell 11 is provided with a positive electrode tab (not shown in the figure) on one side along the second direction Y, and is provided with a negative electrode tab (not shown in the figure) on the other side along the second direction Y, and the positive electrode tab and the negative electrode tab are electrically connected in the battery cell 1, which can effectively reduce the thermal resistance of the battery cell 11 to external heat exchange.

[0055] The side support member 122 is provided with a plurality of perforations (not shown in the figure), and each perforation is arranged along the first direction X. Each perforation is provided for one positive electrode tab or one negative electrode tab, so that the positive electrode tab and the negative electrode tab are exposed to facilitate the electrical connection of the positive electrode tab and the negative electrode tab.

[0056] Optionally, the perforation is a strip-shaped hole extending along the third direction Z, so as to extend or expose the tab in a sheet shape.

[0057] Optionally, the battery cell 1 provided by the present application, the positive electrode tab and the negative electrode tab can also be located on the same side of the battery cell 11 and spaced apart on the same side of the battery cell, which has the advantage of facilitating the connection of each battery cell 11.

[0058] As Figure 1 shown, the battery cell 1 provided by the present application, wherein the battery cell 1 further comprises a positive electrode output member 13 and a negative electrode output member 14.

[0059] The positive output component 13 has a positive output terminal 1321 and multiple first connection terminals 1311. The positive output component 13 is supported by a metal material and has good conductivity. Each first connection terminal 1311 is connected to a positive electrode tab, realizing the parallel connection of the positive electrode tabs of each cell 11.

[0060] The negative output component 14 has a negative output terminal 1411 and multiple second connection terminals. The negative output component 14 is supported by a metal material and has good conductivity. Each second connection terminal is connected to a negative electrode tab, realizing the parallel connection of the positive electrode tabs of each cell 11.

[0061] The parallel connection between each cell 11 is achieved through the positive output component 13 and the negative output component 14, and the positive output terminal 1321 and the negative output terminal 1411 cooperate to realize the electrical connection of the entire battery unit 1.

[0062] like Figure 1 and Figure 2 As shown, the battery cell 1 provided in this application includes a positive electrode output component 13 comprising a first part 131 and a second part 132 connected together. The first part 131 and the second part 132 are integrally formed to ensure that the positive electrode output component 13 has good structural strength.

[0063] The first part 131 and the second part 132 are formed by bending the same metal part, so that an angle is formed between the first part 131 and the second part 132. Each first connection end 1311 is formed on the first part 131. The first part 131 is connected to a side support member 122 on one side of the cell 11 in the second direction Y. The second part 132 is located on the side of at least part of the cell 11 along the third direction Z and forms a positive output end 1321. In this way, the first part 131 and the second part 132 are respectively connected to different directions of the cell 11, and each positive terminal located on the side of the cell 11 in the second direction Y is connected to the side of the cell 11 along the third direction Z.

[0064] The negative output component 14 includes a third part and a fourth part 141 connected to each other. The third part and the fourth part 141 are integrally formed to ensure that the negative output component 14 has good structural strength.

[0065] The third part and the fourth part 141 are formed by bending the same metal piece, so that an included angle is formed between the third part and the fourth part 141, each second connecting end is formed on the third part, the third part is connected with another side support member 122 on the other side of the second direction Y of the battery cell 11, and the fourth part 141 is located on the side of the battery cell 11 along the third direction Z and forms a negative output end 1411, so that the third part and the fourth part 141 are respectively connected to different directions of the battery cell 11, and each negative terminal located on the other side of the second direction Y of the battery cell 11 is conducted to the side of the battery cell 11 along the third direction Z.

[0066] As shown in Figure 1 and Figure 2 shown, the battery unit 1 provided by the application is provided with an embedding groove 1221 on the side support member 122, the first part 131 and the third part are respectively embedded and clamped in the embedding groove 1221 of the corresponding side support member 122, and the embedding groove 1221 can effectively position the first part 131 and the third part, so as to ensure that each first connecting end 1311 of the first part 131 can be accurately connected with the corresponding positive tab to realize circuit conduction, and each second connecting end of the third part can be accurately connected with the corresponding negative tab to realize conduction, thereby ensuring the safety of the circuit.

[0067] As shown in Figure 1 shown, the battery unit 1 provided by the application is provided with an embedding groove 1221 on the side support member 122, the first part 131 and the third part are respectively embedded and clamped in the embedding groove 1221 of the corresponding side support member 122, and the embedding groove 1221 can effectively position the first part 131 and the third part, so as to ensure that each first connecting end 1311 of the first part 131 can be accurately connected with the corresponding positive tab to realize circuit conduction, and each second connecting end of the third part can be accurately connected with the corresponding negative tab to realize conduction, thereby ensuring the safety of the circuit.

[0068] As shown in Figure 1 shown, the battery unit 1 provided by the application is provided with an embedding groove 1221 on the side support member 122, the first part 131 and the third part are respectively embedded and clamped in the embedding groove 1221 of the corresponding side support member 122, and the embedding groove 1221 can effectively position the first part 131 and the third part, so as to ensure that each first connecting end 1311 of the first part 131 can be accurately connected with the corresponding positive tab to realize circuit conduction, and each second connecting end of the third part can be accurately connected with the corresponding negative tab to realize conduction, thereby ensuring the safety of the circuit.

[0069] As shown in Figure 1As shown, the battery unit 1 provided by the application is characterized in that the side of the support plate 15 away from the battery cell 11 is provided with a positioning groove 151, and the second part 132 and the fourth part 141 are embedded in the positioning groove 151. By arranging the positioning groove 151, the second part 132 and the fourth part 141 can be effectively positioned, and the positioning assembly of the positive output member 13 and the negative output member 14 as a whole is realized by cooperating with the embedded groove 1221, thereby improving the structural stability of the battery unit 1 as a whole.

[0070] The second part 132 and the fourth part 141 are arranged in a spaced manner to separate the positive output member 13 and the negative output member 14, thereby ensuring the safety of the circuit of the battery unit 1.

[0071] As shown, Figure 1 As shown, the battery unit 1 provided by the application is characterized in that the support plate 15 is provided with a wire hole 152 penetrating in the third direction Z. The battery unit 1 can further include a temperature sensor arranged between adjacent battery cells 11. The wiring of the temperature sensor can extend to the side of the support plate 15 away from the battery cell 11 through the wire hole 152, so as to realize the electrical connection with external elements and complete the transmission of the data detected by the temperature sensor.

[0072] As shown, Figure 3 and Figure 4 The application further provides a power battery, wherein the power battery includes a shell assembly 2 and the battery unit 1 as described above, and the battery unit 1 is arranged in the interior of the shell assembly 2, and the shell assembly 2 provides protection for the battery unit 1.

[0073] As shown, Figure 3 and Figure 4 The power battery provided by the application is characterized in that the shell assembly 2 includes a shell 21 and a plurality of first baffles 22.

[0074] The shell 21 includes a bottom shell 211 and a shell cover 212, and the bottom shell 211 and the shell cover 212 are sealingly and detachably connected to enclose a closed internal space.

[0075] The first baffles 22 are connected to the interior of the shell 21, and the first baffles 22 are perpendicular to the first direction X. The first baffles 22 are parallel to each other and arranged in a spaced manner along the first direction X. The internal space of the shell 21 is divided into a plurality of independent cavities by the first baffles 22. At least one battery unit 1 is arranged in each cavity, and the battery units 1 are connected in parallel or in series to form a complete power battery, thereby providing electric energy for vehicles or other electric equipment.

[0076] The first baffles 22 are integrally connected with the bottom shell 211, so as to ensure the connection strength between the first baffles 22 and the bottom shell 211.

[0077] The bottom inner surface of the bottom shell 211 is provided with a protrusion 2111 to provide support for the battery cell 1.

[0078] As shown in Figure 3 The power battery provided by the present application, wherein the cavities are strip-shaped cavities extending along the second direction Y, and each cavity is provided with a plurality of battery cells 1 arranged along the second direction Y. Since the two sides of each battery cell 1 along the first direction X are both exposed surfaces of the battery cell 11, such arrangement can effectively reduce the contact between the battery cell 11 and other components along the first direction X, thereby protecting the battery cell 11 and ensuring the safety of the battery cell 11.

[0079] As shown in Figure 3 The power battery provided by the present application, wherein the shell assembly 2 further comprises a plurality of second baffles 23, each cavity is provided with a plurality of second baffles 23, the second baffles 23 are parallel to each other and are arranged along the second direction Y, each cavity is divided into a plurality of independent sub-cavities by the plurality of second baffles 23, and each sub-cavity is provided with one battery cell 1, thereby realizing the matrix arrangement of the battery cells 1.

[0080] The second baffles 23 can be detachably connected to adjust according to the size of the battery cell 1 along the second direction Y and the assembly requirements.

[0081] The second baffles 23 are made of insulating material and are sealingly and fixedly connected with the bottom shell 211 and the first baffles 22 to ensure that the sub-chambers are independent of each other.

[0082] As shown in Figure 3 and Figure 4 Each sub-chamber is filled with an adhesive member 24, the adhesive member 24 covers the battery cell 1 and is adhesively fixed with the first baffles 22, the second baffles 23 and the bottom shell 211 to provide protection for the battery cell 1. The adhesive member 24 is formed by solidifying liquid structural adhesive, and the liquid structural adhesive has good fluidity before solidification to ensure that all spaces around the battery cell 1 in the sub-cavity are filled.

[0083] The modular battery unit 1 related in the present application is different from the common industry single cell 11 which is packaged by independent aluminum shell. Instead, the soft package cell 11 with certain capacity is packaged by aluminum plastic film. Then, according to the required voltage and capacity in the application environment of the power battery, the positive and negative tabs of two or more independent soft package cells 11 are connected in series or parallel to form a battery unit 1 with certain capacity and voltage. Then, a certain number of battery units 1 are assembled into the same integrated shell assembly 2. The battery unit 1 is supported and reliably protected by the shell assembly 2. The thickness of each component of the aluminum plastic film outside the soft package cell 11 in the battery unit 1 can be optimized and thinned. The weight and cost can be reduced, and the thermal resistance of the heat conduction from the internal reaction area of the soft package cell 11 to the outside under the charging and discharging working condition can be reduced, which is beneficial to the heating or cooling effect of the battery unit 1 and the power battery thermal management.

[0084] Further, in order to make the thermal resistance of the battery unit 1 to the outside as low as possible, the positive and negative tabs of the cell 11 are respectively output from both ends of the two sides in the second direction Y, and are connected with the positive output member 13 and the negative output member 14, and are supported by the support plate 15. The total positive (positive output end 1321) and total negative (negative output end 1411) of the battery unit 1 are arranged on the same side (upper side) of the battery unit 1 along the third direction Z, so that the high-voltage loop of the positive output end 1321 and the negative output end 1411 of the battery unit 1 is communicated after the battery unit 1 is assembled in the integrated shell assembly 2.

[0085] The integrated shell assembly 2 related in the present application for assembling the battery unit 1 has a bottom shell 211 with a bottom plate and a peripheral wall surface, which forms an internal space for accommodating a target number of battery units 1, and a first baffle plate 22 arranged in the middle, which divides the internal space into a plurality of long intervals suitable for the size of the battery unit 1 in a certain direction (such as the first direction X size). The long intervals can accommodate a target number of battery units 1 arranged in an array, and the battery units 1 in the array are arranged with a second baffle plate 23 having insulation and thermal protection functions. In this way, the battery units 1 form a certain capacity module or battery pack by arraying in the integrated shell assembly 2. The battery units 1 and the surrounding shell 21 wall surface, the first baffle plate 22 and the second baffle plate 23 have a certain gap, in which a certain heat-conducting glue is filled. The glue fills the gap to improve the low-order modal frequency of the cell 11 group area, thereby improving the mechanical strength and structural stability of the integrated module or battery pack. At the same time, it can reduce the thermal resistance of the cell 11 to the outside through the bottom plate of the bottom shell 211 and the first baffle plate 22, thereby improving the cooling or heating effect of the system thermal management on the cell 11.

[0086] Further, the aforementioned bottom plate, the peripheral wall surface, and the first baffle plate 22 arranged in the middle are all made of metal materials with certain strength and low density, such as aluminum alloy, which not only provides structural support and ensures the structural safety of the battery unit 1, but also has high heat conduction capacity, which is beneficial to the better outward conduction of the heat generated by the battery unit 1 in the charging and discharging conditions.

[0087] Optionally, the inner surface of the shell 21 and the first baffle plate 22 can be reliably coated with an insulating layer, which can be realized by spraying, electrophoresis, pasting, or other processes, to meet the safety requirements of system insulation and voltage resistance; in addition, the second baffle plate 23 for insulation and thermal protection in the array of battery units 1 is made of a non-metallic material with high structural strength, such as polyhexamethylene adipamide (PA66) combined with glass fiber, and is integrated with a thermal protection material, which meets the functional requirements of structural strength and thermal insulation and protection of the battery unit 1 in the case of thermal runaway, and its low density can reduce the total weight of the integrated module or battery pack, which is beneficial to the lightweight demand of the power battery as a whole.

[0088] After the battery unit 1 is integrated in the integrated shell assembly 2, an integrated shell cover 212 is assembled above the bottom shell 211 to support the high-voltage connection and low-voltage wire harness assembly between the battery units 1; the integrated shell cover 212 can be made of a composite material of a main non-metallic material and a local metallic material, which is lightweight while the local metallic material is reliably connected to the peripheral wall surface and the first baffle plate 22 of the bottom shell 211 through welding, riveting, or other processes to ensure the reliability and safety of the overall structure; the inner side of the integrated shell cover 212 is integrated with a non-metallic thermal protection material, which ensures that the integrated cell 11 shell cover 212 can provide sufficient thermal insulation and structural support in the case of thermal runaway of the battery unit 1, and meets the thermal safety requirements of the power battery.

[0089] The application also provides a vehicle, wherein the vehicle comprises the power battery as described above.

[0090] The vehicle provided by the embodiment of the application has the following advantages: the battery unit 1 of the power battery of the vehicle stacks at least two battery units 11 and supports and positions the battery units 11 through the support structure 12, the partition plate 121 of the support structure 12 can provide support and separation protection for the battery units 11 on at least one side of the battery units 11 in the first direction X, and the side support member 122 of the support structure 12 can provide support for the battery units 11 on both sides of the battery units 11 in the second direction Y, and each battery unit 11 is combined to form an integral whole for subsequent assembly, which can effectively improve the integration degree, save the shell separately arranged for each battery unit 11 in the prior art, and effectively improve the energy density of the battery unit 1 and the power battery.

Claims

1. A battery cell, characterized by, The battery cell comprises: at least two battery cells arranged along a first direction; a support structure comprising at least one partition plate and two side support members, the partition plate being arranged between every two adjacent battery cells, the two side support members being arranged along a second direction, each partition plate being connected to the two side support members at both ends along the second direction, and the two side support members being connected to the battery cells along both sides along the second direction, respectively; the first direction intersects the second direction.

2. The battery cell of claim 1, wherein, The battery cell is provided with a positive electrode tab and a negative electrode tab; the side support member is provided with a plurality of through holes, each of which is provided for one of the positive electrode tabs or one of the negative electrode tabs.

3. The battery cell of claim 1, wherein, The battery cell is provided with a positive electrode tab along one side along the second direction, and a negative electrode tab along the other side along the second direction; the side support member is provided with a plurality of through holes, each of which is provided for one of the positive electrode tabs or one of the negative electrode tabs.

4. The battery cell according to claim 2 or 3, characterized in that, The battery cell further comprises: a positive electrode output member having a positive electrode output end and a plurality of first connecting ends, each of which is connected to one of the positive electrode tabs; and / or, a negative electrode output member having a negative electrode output end and a plurality of second connecting ends, each of which is connected to one of the negative electrode tabs.

5. The battery cell of claim 4, wherein, The positive electrode output member comprises a first part and a second part connected to each other, each of the first connecting ends is formed on the first part, the first part is connected to one of the side support members, an included angle is formed between the first part and the second part, the second part is located on one side of at least part of the battery cells along a third direction and forms the positive electrode output end; and / or, the negative electrode output member comprises a third part and a fourth part connected to each other, each of the second connecting ends is formed on the third part, the third part is connected to the other side support member, an included angle is formed between the third part and the fourth part, the fourth part is located on one side of at least part of the battery cells along the third direction and forms the negative electrode output end; the first direction, the second direction and the third direction are perpendicular to each other.

6. The battery cell of claim 5, wherein, The side support member is provided with a recess, and the first part and the third part are respectively embedded and clamped in the recess of the corresponding side support member.

7. The battery cell of claim 5, wherein, The second part and the fourth part are located on the same side of the battery cells along the third direction.

8. The battery cell of claim 7, wherein, The battery cell further comprises a support plate, the support plate is arranged on the first side of the battery cells along the third direction, and the second part and the fourth part are respectively connected to the support plate.

9. The battery cell of claim 8, wherein, The side of the support plate away from the battery cells is provided with a positioning groove, and the second part and the fourth part are embedded in the positioning groove and arranged at intervals.

10. The battery cell of claim 8, wherein, The support plate is provided with a wire hole penetrating along the third direction.

11. A power cell, characterized by The power battery comprises: a shell assembly and the battery cell according to any one of claims 1 to 10, the battery cell being arranged in the interior of the shell assembly.

12. The power cell of claim 11, wherein, The shell assembly comprises: an outer shell; a plurality of first baffles connected to the interior of the housing, the first baffles being parallel to each other and spaced apart along a first direction, and the interior space of the housing being divided into a plurality of independent cavities by the first baffles; at least one battery cell is arranged in each of the cavities.

13. The power cell of claim 12, wherein, a plurality of battery cells are arranged in each of the cavities, and the battery cells are arranged along a second direction.

14. The power cell of claim 13, wherein, the housing assembly further comprises a plurality of second baffles, a plurality of second baffles are arranged in each of the cavities, the second baffles are parallel to each other and spaced apart along the second direction, and each of the cavities is divided into a plurality of independent sub-cavities by the second baffles, and one battery cell is arranged in each of the sub-cavities.

15. A vehicle characterized by comprising: the vehicle comprises the power battery as claimed in any one of claims 11 to 14.

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