Power battery system, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a power battery system, a battery pack and electric equipment, the power battery system comprises a battery shell, an electrical area and an energy storage area are configured in an inner cavity of the battery shell, one side, deviating from the energy storage area, of the electrical area is configured as a first interface area, and one side, deviating from the electrical area, of the energy storage area is configured as a second interface area; the first interface area and the second interface area are located on the outer side of the battery shell, an upper cover sealing area is arranged at the upper end of the battery shell, and a bottom protection area is arranged at the lower end of the battery shell. A first interface area and a second interface area are arranged on the outer side of the battery shell, an electrical area and an energy storage area are arranged in an inner cavity of the battery shell, an upper cover sealing area is arranged at the upper end of the battery shell, and a bottom protection area is arranged at the lower end of the battery shell. And the integration position and the design scheme of each area are solidified, so that the generalization of the maximum proportion of the parts can be realized, the parts can be conveniently purchased in a centralized and unified manner, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a power battery system, a battery pack, and electrical equipment. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] In the related art, there is no unified integration scheme for the design of the battery housing, which results in failure to meet the requirements of integrated universal design. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a power battery system, a battery pack and electrical equipment, which can solidify the integration location and design scheme of each area, realize the maximum proportion of common components, facilitate centralized and unified procurement of components, and achieve cost reduction.

[0005] In a first aspect, an embodiment of the present application provides a power battery system, comprising: a battery shell, wherein an inner cavity of the battery shell is configured with an electrical area and an energy storage area along a front-to-rear direction, a side of the electrical area away from the energy storage area is configured as a first interface area, and a side of the energy storage area away from the electrical area is configured as a second interface area, the first interface area and the second interface area are located on the outside of the battery shell, the upper end of the battery shell is configured as an upper cover sealing area, and the lower end of the battery shell is configured as a bottom protection area.

[0006] In the above implementation process, the outside of the battery shell is configured with a first interface area and a second interface area, the inner cavity of the battery shell is configured with an electrical area and an energy storage area, the upper end of the battery shell is configured with an upper cover sealing area, and the lower end is configured with a bottom protection area. By integrating the six areas and solidifying the integration position and design scheme of each area, the maximum proportion of components can be universalized, which is convenient for centralized and unified procurement of components and achieves cost reduction.

[0007] In some embodiments, the first interface area is configured with a fast charging connector and a high voltage connector.

[0008] In the above implementation process, by integrating the fast charging connector and the high-voltage connector in the first interface area, the installation positions of the fast charging connector and the high-voltage connector can be solidified, and the design scheme can be unified, which is conducive to the maximum proportion of common components, facilitates centralized and unified procurement of components, and achieves cost reduction.

[0009] In some embodiments, the second interface area is configured with a water pipe flange and an explosion-proof valve.

[0010] In the above implementation process, by integrating the water pipe flange and the explosion-proof valve in the second interface area, the installation positions of the water pipe flange and the explosion-proof valve can be solidified, and the design scheme can be unified, which is conducive to the maximum proportion of common components, facilitates centralized and unified procurement of components, and achieves cost reduction.

[0011] In some embodiments, the electrical zone is configured with a battery management unit and a power distribution unit.

[0012] In the above implementation process, by configuring the electrical area at the front side of the inner cavity of the battery shell and integrating the battery management unit and the power distribution unit in the electrical area, the installation positions of the battery management unit and the power distribution unit can be solidified, and the design scheme can be unified, which is conducive to the maximum proportion of common components, facilitates centralized and unified procurement of components, and achieves cost reduction.

[0013] In some embodiments, the electrical area is further provided with a copper busbar, which is connected to the power distribution unit, so as to solidify the installation position of the copper busbar and unify the design scheme, which is conducive to the maximum proportion of universalization of components, facilitates centralized and unified procurement of components, and realizes cost reduction.

[0014] In some embodiments, the upper cover sealing area is configured with a sealing gasket.

[0015] In the above-mentioned implementation process, by configuring the upper cover sealing area at the upper end position of the battery casing and providing a sealing gasket in the upper cover sealing area, the installation position of the sealing gasket can be solidified, the design scheme can be unified, which is conducive to the maximum proportion of commonality of components, facilitates centralized and unified procurement of components, and realizes cost reduction.

[0016] In some embodiments, the bottom protection area is configured with a bottom guard plate.

[0017] In the above implementation process, by configuring the bottom protection area at the lower end of the battery casing and setting a bottom guard plate in the bottom protection area, the installation position of the bottom guard plate can be solidified, the design scheme can be unified, which is conducive to the maximum proportion of common components, facilitates centralized and unified procurement of components, and achieves cost reduction.

[0018] In some embodiments, the battery housing includes an upper housing and a lower housing, the upper housing is connected to the lower housing, and the sealing gasket is disposed between the upper housing and the lower housing.

[0019] In a second aspect, the present application also provides a battery pack, comprising a power battery system as described in any one of the above items.

[0020] Since the battery pack provided in the second aspect includes a power battery system, the battery pack has all the technical effects of the power battery system, which will not be elaborated here.

[0021] In a third aspect, the present application also provides an electrical device, comprising the battery pack as described above.

[0022] Since the electrical equipment provided in the third aspect includes a battery pack, the electrical equipment has all the technical effects of the battery pack, which will not be elaborated here.

[0023] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a power battery system provided in an embodiment of the present application;

[0027] Figure 2 A side view of a power battery system provided in an embodiment of the present application.

[0028] Reference numerals

[0029] 100. Battery housing; 101. First interface area; 102. Second interface area; 103. Electrical area; 104. Energy storage area; 105. Upper cover sealing area; 106. Bottom protection area. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0033] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0035] Example

[0036] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0037] During the design process, the inventor discovered that the power battery design did not clearly define the areas for the internal parts of the battery. The battery cells / modules were integrated in the middle area of ​​the battery pack; electrical parts such as BDU, BMS, and copper busbars were integrated in the front or back of the battery pack; external interface parts such as fast charging connectors, high-voltage connectors, water pipe flanges, and explosion-proof valves were integrated in the front or back of the battery pack; thermal management components such as cold plates were integrated at the bottom or top of the battery pack. The battery system design does not meet the requirements of highly integrated universal design.

[0038] The integration scheme of battery system parts is not unified and does not meet the requirements of high-integration universal design. There are many design schemes for battery system parts and the design and development costs are high. Due to the large number of design schemes for parts, centralized and unified procurement is not possible, resulting in high procurement costs.

[0039] In view of this, if Figure 1-Figure 2 As shown, in the first aspect, an embodiment of the present application provides a power battery system, including: a battery shell 100, the inner cavity of the battery shell 100 is configured with an electrical area 103 and an energy storage area 104 along the front-to-back direction, the side of the electrical area 103 away from the energy storage area 104 is configured as a first interface area 101, and the side of the energy storage area 104 away from the electrical area 103 is configured as a second interface area 102, the first interface area 101 and the second interface area 102 are located on the outside of the battery shell 100, the upper end of the battery shell 100 is configured as an upper cover sealing area 105, and the lower end of the battery shell 100 is configured as a bottom protection area 106.

[0040] Exemplarily, the energy storage area 104 includes a liquid cooling plate, battery cells, modules, bus bars and wiring harnesses, etc. The liquid cooling plate is integrated with the lower shell of the battery shell 100 by welding, the battery cells and modules are fixed to the lower shell by screwing, the bus bars are fixed to the modules by screwing, the wiring harnesses are fixed to the lower shell by snapping, the components of the first interface area 101 are fixed to the lower shell of the battery shell 100 by screwing or welding, and the components of the second interface area 102 are fixed to the lower shell of the battery shell 100 by screwing or welding.

[0041] In the above implementation process, the outer side of the battery housing 100 is configured with a first interface area 101 and a second interface area 102, the inner cavity of the battery housing 100 is configured with an electrical area 103 and an energy storage area 104, the upper end of the battery housing 100 is configured with an upper cover sealing area 105, and the lower end is configured with a bottom protection area 106. By integrating the six areas and solidifying the integration position and design scheme of each area, the maximum proportion of components can be universalized, which is convenient for centralized and unified procurement of components to achieve cost reduction.

[0042] In some embodiments, the first interface area 101 is configured with a fast charging connector and a high voltage connector.

[0043] In the above-mentioned implementation process, by integrating the fast-charging connector and the high-voltage connector in the first interface area 101, the installation positions of the fast-charging connector and the high-voltage connector can be solidified, and the design scheme can be unified, which is conducive to the maximum proportion of common components, and facilitates centralized and unified procurement of components to achieve cost reduction.

[0044] In some embodiments, the second interface area 102 is configured with a water pipe flange and an explosion-proof valve.

[0045] In the above implementation process, by integrating the water pipe flange and the explosion-proof valve in the second interface area 102, the installation positions of the water pipe flange and the explosion-proof valve can be solidified, and the design scheme can be unified, which is conducive to the maximum proportion of common components, facilitates centralized and unified procurement of components, and achieves cost reduction.

[0046] In some embodiments, the electrical area 103 is configured with a battery management unit (BMS) and a power distribution unit (BDU), wherein the BMS and the BDU are fixed to the lower housing by screwing.

[0047] In the above implementation process, by configuring the electrical area 103 at the front side of the inner cavity of the battery shell 100 and integrating the battery management unit and the power distribution unit in the electrical area 103, the installation positions of the battery management unit and the power distribution unit can be solidified, and the design scheme can be unified, which is conducive to the maximum proportion of common components, facilitates centralized and unified procurement of components, and achieves cost reduction.

[0048] In some embodiments, the electrical area 103 is further provided with a copper busbar, which is connected (e.g., screwed) to the power distribution unit. This can solidify the installation position of the copper busbar, unify the design scheme, and facilitate the maximum proportion of commonality of components, facilitate centralized and unified procurement of components, and achieve cost reduction.

[0049] In some embodiments, the upper cover sealing area 105 is provided with a sealing gasket, wherein the sealing gasket can be fixed on the lower housing by gluing.

[0050] In the above-mentioned implementation process, by configuring the upper cover sealing area 105 at the upper end position of the battery housing 100 and providing a sealing gasket in the upper cover sealing area 105, the installation position of the sealing gasket can be solidified, the design scheme can be unified, which is conducive to the maximum proportion of commonality of components, and facilitates centralized and unified procurement of components to achieve cost reduction.

[0051] In some embodiments, the bottom protection area 106 is provided with a bottom guard plate, wherein the bottom guard plate is fixed to the lower shell by riveting.

[0052] In the above-mentioned implementation process, by configuring the bottom protection area 106 at the lower end position of the battery casing 100 and setting a bottom guard plate in the bottom protection area 106, the installation position of the bottom guard plate can be solidified, and the design scheme can be unified, which is conducive to the maximum proportion of common components, facilitates centralized and unified procurement of components, and realizes cost reduction.

[0053] In some embodiments, the battery housing 100 includes an upper housing and a lower housing, the upper housing is connected to the lower housing, for example, the upper housing is fixed to the lower housing by screwing, and the sealing gasket is arranged between the upper housing and the lower housing.

[0054] In a second aspect, the present application also provides a battery pack, comprising the power battery system as described above.

[0055] In a battery pack, the battery pack may also include a battery cell, which may be one or more. If there are multiple battery cells, the multiple battery cells may be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells may be accommodated in a box; of course, multiple battery cells may be first connected in series, in parallel, or in a mixed connection to form a battery module, and then multiple battery modules may be connected in series, in parallel, or in a mixed connection to form a whole, and then accommodated in a box. The battery cell may be cylindrical, flat, rectangular, or in other shapes.

[0056] Of course, in other embodiments, the battery cells can also be connected in series, parallel or mixed and assembled in a battery box to form a number of battery modules. The battery modules are connected in series or other ways and assembled in the energy storage area of ​​the battery pack to form a battery pack.

[0057] Each battery cell may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell may be cylindrical, flat, rectangular, or in other shapes.

[0058] The battery cell may include a housing, an electrode assembly, and an end cap assembly. The housing has an opening, the electrode assembly is accommodated in the housing, and the end cap assembly is used to cover the opening.

[0059] The outer shell can be in various shapes, such as a cylinder, a cuboid, etc. The shape of the outer shell can be determined according to the specific shape of the electrode assembly. For example, if the electrode assembly is a cylindrical structure, the outer shell can be a cylindrical structure; if the electrode assembly is a cuboid structure, the outer shell can be a cuboid structure.

[0060] The shell may be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and the embodiments of the present application do not impose any special restrictions on this.

[0061] The electrode assembly may include a positive electrode sheet (not shown in the figure), a negative electrode sheet (not shown in the figure) and a separator (not shown in the figure). The electrode assembly may be a wound structure formed by winding the positive electrode sheet, the separator and the negative electrode sheet, or a stacked structure formed by stacking the positive electrode sheet, the separator and the negative electrode sheet. The electrode assembly also includes a positive electrode tab (not shown in the figure) and a negative electrode tab (not shown in the figure), which may be a positive electrode current collector in the positive electrode sheet that is not coated with a positive electrode active material layer as the positive electrode tab, and may be a negative electrode current collector in the negative electrode sheet that is not coated with a negative electrode active material layer as the negative electrode tab.

[0062] Since the battery pack provided in the second aspect includes a power battery system, the battery pack has all the technical effects of the power battery system, which will not be elaborated here.

[0063] In a third aspect, the present application also provides an electrical device, comprising the battery pack as described above.

[0064] Exemplarily, the battery pack is used to provide electrical energy to the electrical device, and the electrical device may be a vehicle, a portable device, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0065] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0066] The vehicle is provided with a battery pack inside, which can be arranged at the bottom, head or tail of the vehicle. The battery pack can be used to power the vehicle, for example, the battery pack can be used as the operating power source of the vehicle, for the circuit system of the vehicle, such as for the working power demand during the starting, navigation and operation of the vehicle.

[0067] The vehicle may also include a controller and a motor, wherein the controller is used to control the battery pack to provide power to the motor, for example, for starting, navigating, and operating power requirements of the vehicle during driving.

[0068] In some embodiments of the present application, the battery pack can be used not only as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0069] Since the electrical equipment provided in the third aspect includes a battery pack, the electrical equipment has all the technical effects of the battery pack, which will not be elaborated here.

[0070] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.

[0071] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0072] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean 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 the present application.

[0073] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A power battery system, characterized in that: include: A battery shell, wherein an inner cavity of the battery shell is configured with an electrical area and an energy storage area along the front-to-back direction, a side of the electrical area away from the energy storage area is configured as a first interface area, a side of the energy storage area away from the electrical area is configured as a second interface area, the first interface area and the second interface area are located on the outside of the battery shell, the upper end of the battery shell is configured as an upper cover sealing area, and the lower end of the battery shell is configured as a bottom protection area.

2. The power battery system according to claim 1, characterized in that: The first interface area is configured with a fast charging connector and a high voltage connector.

3. The power battery system according to claim 1, characterized in that: The second interface area is provided with a water pipe flange and an explosion-proof valve.

4. The power battery system according to claim 1, characterized in that: The electrical area is equipped with a battery management unit and a power distribution unit.

5. The power battery system according to claim 4, characterized in that: The electrical area is also configured with a copper busbar, which is connected to the power distribution unit.

6. The power battery system according to claim 1, characterized in that: The upper cover sealing area is provided with a sealing gasket.

7. The power battery system according to claim 1, characterized in that: The bottom protection area is provided with a bottom guard plate.

8. The power battery system according to claim 6, characterized in that: The battery case includes an upper case and a lower case, the upper case is connected to the lower case, and the sealing gasket is arranged between the upper case and the lower case.

9. A battery pack, characterized in that: Comprising a power battery system as described in any one of claims 1 to 8.

10. An electrical device, characterized in that: Comprising the battery pack as claimed in claim 9.

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