Battery module, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a battery module, a battery pack and electric equipment, and the battery module comprises an end plate which is configured to be distributed along a first direction, the end plate is configured with a first extension part, and the first extension part is configured with a first adapter; the side plates are arranged to be distributed in the second direction, the side plates are provided with second extending parts, the second extending parts are provided with second adapters, the first adapters are matched with the second adapters, and the first direction is perpendicular to the second direction. The end plate is provided with a first extending part, the first extending part is provided with a first adapter, the side plate is provided with a second extending part, and the second extending part is provided with a second adapter, so that when the end plate and the side plate are combined, lap joint of the end plate and the side plate can be achieved through adaptation of the first adapter and the second adapter, and manual work or a tool clamp is not needed; therefore, pre-positioning before the end plate and the side plate are connected is completed, the assembly efficiency of a production line is improved, and the equipment investment cost is saved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery module, a battery pack, and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In the development of battery technology, besides improving energy density, battery assembly is also an issue that cannot be ignored. Therefore, how to improve battery assembly efficiency is a technical problem that urgently needs to be solved in battery technology. Utility Model Content

[0004] The purpose of this application is to provide a battery module, battery pack, and electrical equipment that can improve assembly efficiency.

[0005] In a first aspect, embodiments of this application provide a battery module, including: an end plate configured to be distributed along a first direction, the end plate having a first extension portion having a first adapter portion; and a side plate configured to be distributed along a second direction, the side plate having a second extension portion having a second adapter portion having a second adapter portion, the first adapter portion being adapted to the second adapter portion, wherein the first direction is perpendicular to the second direction.

[0006] In the above implementation process, the end plate is provided with a first extension and a first adapter, and the side plate is provided with a second extension and a second adapter. When the end plate and the side plate are combined, the end plate and the side plate can be overlapped by the adaptation of the first adapter and the second adapter, without the need for manual labor or tooling fixtures. This completes the pre-positioning before the end plate and the side plate are connected, improves the assembly efficiency of the production line, and saves the cost of equipment investment.

[0007] In some embodiments, the first extension is configured to extend along the first direction, and the second extension is configured to extend along the second direction. By extending the first extension along the first direction and the second extension along the second direction, it is convenient to overlap the first adapter and the second adapter, achieving pre-fixation before fixing the end plate and the side plate, improving the assembly efficiency of the production line, and saving equipment investment costs.

[0008] In some embodiments, the first adapter includes a slot, and the second adapter includes a hook, the hook passing through the slot and overlapping the end plate. By having the hook pass through the slot and overlap the end plate, it can not only serve as a guide but also as a limit, achieving pre-fixation of the end plate and the side plate without the need for manual labor or tooling fixtures, thus improving production line assembly efficiency and saving costs.

[0009] In some embodiments, the slot includes a first snap-fit ​​edge and a second snap-fit ​​edge, the first snap-fit ​​edge and the second snap-fit ​​edge being spaced apart to form a snap-fit ​​cavity, the snap-fit ​​cavity being configured for the insertion of the first adapter.

[0010] In the above implementation process, the first snap-fit ​​edge and the second snap-fit ​​edge are distributed at intervals, so that during the pre-fixing process of the end plate and the side plate, the cooperation of the first snap-fit ​​edge and the second snap-fit ​​edge can not only play a guiding role, but also limit the position, thereby improving the accuracy of the assembly of the end plate and the side plate.

[0011] In some embodiments, two end plates and two side plates are provided. The distance between the two side plates is less than the length of the end plate. The end plates and the side plates are connected to each other to form a receiving cavity. By cooperating with the end plates and side plates to form a receiving cavity, it is convenient to assemble the battery cells subsequently, improving assembly efficiency. At the same time, the distance between the two side plates is less than the length of the end plate, so that when the end plates and side plates are combined, the end plates can limit the movement of the side plates.

[0012] In some embodiments, the battery module further includes a plurality of battery cells, and the plurality of battery cells are disposed in the receiving cavity.

[0013] In some embodiments, the battery module further includes a wiring harness isolation assembly connected to the battery cell and located on the side of the battery cell closer to the side plate.

[0014] In some embodiments, the end plate is further provided with a fixing part, which protrudes along the side of the end plate opposite to the battery cell. By providing a fixing part on the end plate, it can be used to fix the battery module after assembly, ensuring the stability of the battery module.

[0015] Secondly, this application also provides a battery pack, including the battery module as described in any of the above claims.

[0016] Since the battery pack provided in the second aspect includes the battery module, the battery pack has all the technical effects of the battery module, which will not be elaborated here.

[0017] Thirdly, this application also provides an electrical device including the battery pack described above.

[0018] Since the electrical equipment provided by the third party includes a battery pack, the electrical equipment has all the technical effects of the battery pack, which will not be elaborated here.

[0019] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0020] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the battery module provided in an embodiment of this application;

[0023] Figure 2 This is an exploded view of the battery module provided in an embodiment of this application;

[0024] Figure 3 This is a front view of the end plate of the battery module provided in an embodiment of this application;

[0025] Figure 4 A schematic diagram of the structure of the first adapter of the end plate of the battery module provided in the embodiments of this application;

[0026] Figure 5 A schematic diagram of the structure of the second adapter of the side plate of the battery module provided in the embodiments of this application;

[0027] Figure 6 A schematic diagram of the structure for adapting the side plate and end plate of the battery module provided in the embodiments of this application.

[0028] Figure Labels

[0029] 100, end plate; 101, first extension; 102, first adapter; 103, fixing part; 200, side plate; 201, second extension; 202, second adapter; 300, battery cell; 400, wire harness isolation assembly. Detailed Implementation

[0030] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0035] Example

[0036] Battery cells have advantages such as high energy density, long service life, energy saving and environmental protection, and are widely used in various fields such as new energy vehicles and energy storage power stations. In use, multiple battery cells are usually arranged and interconnected through busbars to form a battery module. Multiple battery modules are placed in a box to form a complete battery pack.

[0037] For the assembly of battery modules, existing technical solutions require manual positioning or tooling to pre-position the side panels during welding. This method results in wasted time and low efficiency, while the pre-positioning tooling solution requires additional tooling, which is costly.

[0038] In view of this, such as Figures 1-6 As shown, in a first aspect, embodiments of this application provide a battery module, including: an end plate 100 configured to be distributed along a first direction, the end plate 100 being configured with a first extension 101, the first extension 101 being configured with a first adapter 102; and a side plate 200 configured to be distributed along a second direction, the side plate 200 being configured with a second extension 201, the second extension 201 being configured with a second adapter 202, the first adapter 102 being adapted to the second adapter 202, wherein the first direction is perpendicular to the second direction.

[0039] For example, the first direction includes, but is not limited to, the left-right direction, and the second direction includes, but is not limited to, the front-back direction. The first extension 101 is connected to the end of the end plate 100, and each end plate 100 is provided with at least one first extension 101, for example, each end plate 100 is provided with two first extensions 101. The second extension 201 is connected to the end of the side plate 200, and each side plate 200 is provided with at least one second extension 201, for example, each side plate 200 is provided with two second extensions 201.

[0040] In the above implementation process, the end plate 100 is provided with a first extension 101, and the first extension 101 is configured with a first adapter 102. The side plate 200 is provided with a second extension 201, and the second extension 201 is configured with a second adapter 202. When the end plate 100 and the side plate 200 are combined, the end plate 100 and the side plate 200 can be overlapped by the adaptation of the first adapter 102 and the second adapter 202 without the need for manual labor or tooling fixtures. This completes the pre-positioning of the end plate 100 and the side plate 200 before connection, improves the assembly efficiency of the production line, and saves the cost of equipment investment.

[0041] like Figures 3-6As shown, the first extension 101 is configured to extend along the first direction, and the second extension 201 is configured to extend along the second direction. For example, the first extension 101 and the end plate 100 are integrally formed, and the second extension 201 and the side plate 200 are integrally formed. By extending the first extension 101 along the first direction and the second extension 201 along the second direction, the overlap of the first adapter 102 and the second adapter 202 is facilitated, achieving pre-fixation before fixing the end plate 100 and the side plate 200, improving production line assembly efficiency and saving equipment investment costs.

[0042] like Figures 4-5 As shown, the first adapter 102 includes a slot, and the second adapter 202 includes a hook. The hook passes through the slot and overlaps the end plate 100. For example, the first adapter 102 is located near the upper end of the end plate 100, but it can also be located at other positions on the end plate 100. The slot is configured for the second adapter 202 to pass through. To limit the positioning of the side plate 200, a dovetail groove can be provided at the bottom of the end plate 100. The dovetail groove is used to mate with the hook. The shape of the hook includes, but is not limited to, a semi-circular arc groove. By passing the hook through the slot and overlapping the end plate 100, it not only serves as a guide but also as a limit, achieving pre-fixation of the end plate 100 and the side plate 200 without the need for manual labor or tooling fixtures, thus improving production line assembly efficiency and saving costs.

[0043] In some embodiments, the slot includes a first latching edge and a second latching edge, which are spaced apart to form a latching cavity, configured for the first adapter 102 to pass through. Exemplarily, both the first and second latching edges can be configured to be distributed along a vertical direction, and the lengths of the first and second latching edges along the vertical direction are not specifically limited.

[0044] In the above implementation process, the first snap-fit ​​edge and the second snap-fit ​​edge are spaced apart, so that during the pre-fixing process of the end plate 100 and the side plate 200, the cooperation of the first snap-fit ​​edge and the second snap-fit ​​edge can not only play a guiding role, but also limit the position, thereby improving the accuracy of the assembly of the end plate 100 and the side plate 200.

[0045] In some embodiments, two end plates 100 and two side plates 200 are provided. The distance between the two side plates 200 is less than the length of the end plate 100. The end plate 100 and the side plates 200 are connected to each other to form a receiving cavity. By cooperating with the end plate 100 and the side plate 200 to form a receiving cavity, it is convenient to assemble the battery cell 300 subsequently, improving assembly efficiency. At the same time, the distance between the two side plates 200 is less than the length of the end plate 100, so that when the end plate 100 and the side plate 200 are combined, the end plate 100 can limit the side plate 200.

[0046] In some embodiments, the battery module further includes a plurality of battery cells 300, and the plurality of battery cells 300 are disposed in the receiving cavity.

[0047] The battery cell 300 includes a casing and a bare cell, the bare cell consisting of a positive electrode, a negative electrode, and a separator. The battery cell 300 primarily operates by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated positive current collector protrudes beyond the coated positive current collector, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the uncoated negative current collector protrudes beyond the coated negative current collector, serving as the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon, etc. To ensure that a large current can pass through without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together. The separator can be made of PP (polypropylene) or PE (polyethylene), etc. In some embodiments, the battery assembly further includes a negative electrode structure, which is connected to the negative electrode tab of the bare cell, and the negative electrode structure is disposed on the top cover of the battery.

[0048] like Figures 1-2As shown, the battery module also includes a wire harness isolation assembly 400 (CCS assembly, Cell Contact System, used to separate and maintain the spacing between wire harnesses, ensuring that wires do not cross or contact each other, and can effectively avoid safety hazards such as short circuits and fires). The wire harness isolation assembly 400 is connected to the battery cell 300, and the wire harness isolation assembly 400 is located on the side of the battery cell 300 near the side plate 200.

[0049] In some embodiments, the end plate 100 is further provided with a fixing part 103, which protrudes along the side of the end plate 100 opposite to the battery cell 300. By providing the fixing part 103 on the end plate 100, it can be used to fix the battery module after assembly, ensuring the stability of the battery module.

[0050] Secondly, this application also provides a battery pack, including the battery module as described above.

[0051] In a battery pack, there can be multiple battery modules, which can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery modules are connected in both series and parallel configurations. These modules can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of the multiple battery modules is housed within a casing. The battery pack may also include other structures, such as a busbar component for electrical connection between the multiple battery modules.

[0052] Since the battery pack provided in the second aspect includes the battery module, the battery pack has all the technical effects of the battery module, which will not be elaborated here.

[0053] Thirdly, this application also provides an electrical device including the battery pack described above.

[0054] For example, the battery pack is used to provide electrical energy to the electrical device, which can be a vehicle, portable device, ship, spacecraft, electric toy, power tool, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. This application embodiment does not impose any special limitations on the above-mentioned electrical devices.

[0055] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0056] The vehicle has a battery pack installed inside, which can be located at the bottom, front, or rear of the vehicle. The battery pack can be used to power the vehicle; for example, it can serve as the vehicle's operating power source for the vehicle's electrical system, such as for the power needs of starting, navigation, and operation.

[0057] The vehicle may also include a controller and a motor, with the controller controlling the battery pack to power the motor, for example, for the vehicle's power needs during starting, navigation, and driving.

[0058] In some embodiments of this application, the battery pack can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0059] Since the electrical equipment provided by the third party includes a battery pack, the electrical equipment has all the technical effects of the battery pack, which will not be elaborated here.

[0060] In all embodiments of this application, "large" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The embodiments of this application will not elaborate further on the expression of such relative terms.

[0061] It should be understood that the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0062] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0063] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. A battery module, characterized by, The battery module comprises: an end plate configured to be distributed along a first direction, the end plate being configured with a first extension, the first extension being configured with a first adapter; a side plate configured to be distributed along a second direction, the side plate being configured with a second extension, the second extension being configured with a second adapter, the first adapter being adapted with the second adapter, wherein the first direction is perpendicular to the second direction.

2. The battery module of claim 1, wherein, The first extension is configured to extend along the first direction, and the second extension is configured to extend along the second direction.

3. The battery module of claim 1, wherein, The first adapter comprises a clamping groove, and the second adapter comprises a hanging lug, the hanging lug being threaded through the clamping groove and being lapped on the end plate.

4. The battery module of claim 3, wherein, The clamping groove comprises a first clamping edge and a second clamping edge, the first clamping edge and the second clamping edge being spaced apart to form a clamping cavity, the clamping cavity being configured for threading of the first adapter.

5. The battery module of claim 1, wherein, The end plate and the side plate are both configured with two, the spacing between the two side plates being less than the length of the end plate, the end plate and the side plate being connected to each other to form an accommodation cavity.

6. The battery module of claim 5, wherein, The battery module further comprises a plurality of battery monomers, the plurality of battery monomers being configured in the accommodation cavity.

7. The battery module of claim 6, wherein, The battery module further comprises a wire harness isolation assembly, the wire harness isolation assembly being connected to the battery monomers, and the wire harness isolation assembly being located on a side of the battery monomers close to the side plate.

8. The battery module of claim 6, wherein, The end plate is further configured with a fixing portion, the fixing portion being protruded from a side of the end plate away from the battery monomers.

9. A battery pack, characterized by, The battery module comprises any one of claims 1-8.

10. An electric device, characterized by The battery pack comprises claim 9.

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