Battery device and electric appliance

Abstract

The utility model discloses a kind of battery device and electric equipment, battery device includes: box, including box bottom, the frame of being arranged around the edge of box bottom and being enclosed and received space, transverse beam being set in received space and extending along first direction, transverse beam divides received space into first cabin and second cabin along the second direction perpendicular to first direction;Multiple battery monomers, are arranged in first cabin side by side;Press strip, set in the side of battery monomer away from box bottom, the end of press strip along second direction is connected with frame, the other end is connected with transverse beam, to fix battery monomer in first cabin;High-voltage distribution box, set in second cabin;Mounting bracket, set in the side of received space away from box bottom, the end of mounting bracket along second direction is connected with box, the other end is connected with press strip;Battery management system, mounted on mounting bracket.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery device and an electrical appliance. Background Technology

[0002] A Battery Management System (BMS) is an electronic system used to monitor and manage battery packs, and is widely used in electric vehicles, energy storage systems, drones, and other fields. The core functions of a BMS include battery status monitoring (such as voltage, current, and temperature), capacity estimation, charge / discharge control, equalization management, and safety protection. Utility Model Content

[0003] The present invention aims to provide a battery device and electrical equipment to improve the problem of the large space occupied by the mounting bracket of the battery management system in the related technology.

[0004] According to one aspect of an embodiment of the present invention, the present invention provides a battery device, the battery device comprising:

[0005] The container includes a bottom, a frame arranged around the edge of the bottom and forming a receiving space, and a crossbeam disposed within the receiving space and extending along a first direction, the crossbeam dividing the receiving space into a first compartment and a second compartment arranged along a second direction perpendicular to the first direction.

[0006] Multiple battery cells are arranged side by side in the first compartment;

[0007] A pressure strip is provided on the side of the battery cell away from the bottom of the box. One end of the pressure strip along the second direction is connected to the frame and the other end is connected to the crossbeam to fix the battery cell in the first compartment.

[0008] The high-voltage distribution box is located inside the second compartment.

[0009] The mounting bracket is set on the side of the accommodating space away from the bottom of the box. One end of the mounting bracket along the second direction is connected to the box body, and the other end is connected to the pressure strip.

[0010] The battery management system is mounted on a mounting bracket.

[0011] One end of the mounting bracket is locked to the battery pack housing, and the other end is locked to the pressure strip that fixes the individual battery cells. This ensures that the mounting bracket is fully secured, which helps to reduce its size and improves the problem of the battery pack's structure being not compact enough and its size being large.

[0012] In some embodiments, the mounting bracket includes a first portion located on the side of the first compartment away from the bottom of the container and a second portion located on the side of the second compartment away from the bottom of the container.

[0013] This design improves space utilization, resulting in a more compact battery device structure. Furthermore, the mounting bracket is located on the side of the high-voltage distribution box away from the bottom of the enclosure, providing some protection for the high-voltage distribution box. In the event of accidental deformation of the battery device, it can prevent damage to the high-voltage distribution box, thus reducing the likelihood of short circuits caused by accidental deformation of the battery device.

[0014] In some embodiments, the first portion of the mounting bracket is connected to the pressure strip. The mounting bracket covers the first portion of the first compartment and is connected to the pressure strip, eliminating the need for a connection structure extending to the frame of the compartment, thus offering advantages such as compact structure and small space occupation.

[0015] In some embodiments, the first part is connected to the pressure strip by a first cable tie, which secures the mounting bracket to the pressure strip, increasing the number of locking points for the mounting bracket. Furthermore, connecting the pressure strip and the mounting bracket with cable ties has the advantages of simple structure and high installation efficiency.

[0016] In some embodiments, an elastic member is provided between the mounting bracket and the battery cell within the first compartment. The elastic member is compressed between the mounting bracket and the battery cell to ensure that the mounting bracket is stably supported, which helps to prevent the mounting bracket from shifting relative to the battery cell, thereby ensuring a reliable connection between the battery management system and the wiring harness.

[0017] In some embodiments, the elastic component includes foam to ensure that the mounting bracket is firmly supported, which helps to prevent the mounting bracket from shifting relative to the battery cells, thereby ensuring a reliable connection between the battery management system and the wiring harness.

[0018] In some embodiments, the mounting bracket includes:

[0019] The support structure extends from the second compartment to the first compartment;

[0020] The first connecting part protrudes from the bracket body along the second direction and is tied together with the pressure strip by the first cable tie.

[0021] In some embodiments, the mounting bracket further includes:

[0022] The second connecting part is located at one end of the support body along the first direction and is connected to the crossbeam;

[0023] The third connecting part is located at the other end of the support body along the first direction and is connected to the crossbeam.

[0024] In some embodiments, the mounting bracket further includes:

[0025] The fourth connection part is located at one end of the bracket body along the first direction and is connected to the high-voltage distribution box;

[0026] The fifth connecting part is located at the other end of the support body along the first direction and is connected to the box.

[0027] In some embodiments, the housing further includes a reinforcing beam connecting the crossbeam and the frame, and a fifth connecting portion is connected to the reinforcing beam.

[0028] According to another aspect of this application, an electrical device is also provided, which includes the battery device described above.

[0029] By applying the technical solution of this utility model, one end of the mounting bracket is locked to the casing of the battery device, and the other end is locked to the pressure strip that fixes the battery cell. While ensuring that the mounting bracket is fully fixed, it is beneficial to reduce the volume of the mounting bracket and improve the problem of the battery device's structure being not compact enough and its volume being large.

[0030] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the structure of an electrical device disclosed in some embodiments of this utility model is shown.

[0033] Figure 2 An exploded structural diagram of a battery device disclosed in some embodiments of this utility model is shown.

[0034] Figure 3 An exploded structural diagram of a battery cell disclosed in some embodiments of this utility model is shown.

[0035] Figure 4 A schematic diagram of the structure of a battery device disclosed in some embodiments of this utility model is shown.

[0036] Figure 5 The diagram shows a schematic layout of a mounting bracket for a battery device disclosed in some embodiments of the present invention.

[0037] Figure 6The diagram shows a structural schematic of a battery device (excluding mounting bracket and battery management system) disclosed in some embodiments of the present invention.

[0038] Figure 7 The diagram shows a structural schematic of a battery device mounting bracket and a battery management system disclosed in some embodiments of the present invention.

[0039] In the picture:

[0040] 1000, Vehicle; 100, Battery assembly; 110, Housing; 111, First part; 112, Second part; 113, Frame; 114, Crossbeam; 115, First compartment; 116, Second compartment; 117, Reinforcing beam; 118, Mounting base; 120, Battery cell; 121, End cap; 121a, Electrode terminal; 122, Housing; 123, Cell assembly; 123a, Tab; 130, Pressure strip; 140, High-voltage distribution box; 150, Mounting bracket; 151, Bracket body; 152, First connecting part; 153, Second connecting part; 154, Third connecting part; 155, Fourth connecting part; 156, Fifth connecting part; 160, Battery management system; 161, Wiring harness; 170, First cable tie; 180, Elastic component; 190, Second cable tie; 200, Controller; 300, Motor. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the invention, are intended to cover non-exclusive inclusion.

[0043] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable error range. "Parallel" is not parallel in the strict sense, but within the allowable error range.

[0045] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this utility model. It should also be noted in the description of this utility model that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Unless otherwise specified, the terms "comprising" and "including" as used in this invention can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0047] Unless otherwise specified, the term "or" is inclusive in this invention. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, the condition "A or B" is satisfied by any of the following conditions: A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0048] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0049] Figure 1 A schematic diagram of an electrical device that uses a battery as a power source is shown; for example... Figure 1 As shown, the electrical equipment in this embodiment includes a vehicle 1000, which can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0050] In some embodiments of this utility model, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0051] Please refer to Figure 2 , Figure 2This is an exploded view of a battery device 100 provided in some embodiments of the present invention. The battery device 100 includes a housing 110 and a battery module disposed within the housing 110. The battery module includes a plurality of battery cells 120, which are housed within the housing 110. The housing 110 provides a receiving space for the battery cells 120, and the housing 110 can adopt various structures. In some embodiments, the housing 110 may include a first portion 111 and a second portion 112, which overlap each other, and together define a receiving space for accommodating the battery cells 120. The second part 112 can be a hollow structure with one end open, and the first part 111 can be a plate-like structure. The first part 111 covers the open side of the second part 112 so that the first part 111 and the second part 112 together define the accommodating space. Alternatively, the first part 111 and the second part 112 can both be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box 110 formed by the first part 111 and the second part 112 can be of various shapes, such as a cylinder, a cuboid, etc.

[0052] In the battery device 100, there can be multiple battery cells 120. These multiple battery cells 120 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 120 are connected in both series and parallel. Multiple battery cells 120 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 120 is housed within the housing 110. Alternatively, the battery device 100 can also consist of multiple battery cells 120 first connected in series, parallel, or in a mixed configuration to form a battery module, and then multiple battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is also housed within the housing 110. The battery device 100 may also include other structures; for example, the battery device 100 may also include a busbar component for realizing the electrical connection between the multiple battery cells 120.

[0053] Each battery cell 120 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 120 can be cylindrical, flat, cuboid, or other shapes.

[0054] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 120 provided in some embodiments of the present invention. The battery cell 120 refers to the smallest unit constituting the battery device 100. For example... Figure 3 The battery cell 120 includes an end cap 121, a housing 122, a cell assembly 123, and other functional components.

[0055] End cap 121 refers to a component that covers the opening of housing 122 to isolate the internal environment of battery cell 120 from the external environment. The shape of end cap 121 can be adapted to the shape of housing 122 to fit it. Optionally, end cap 121 can be made of a material with certain hardness and strength, such as aluminum alloy, so that end cap 121 is less prone to deformation under pressure and impact, giving battery cell 120 higher structural strength and improved safety performance. Functional components such as electrode terminals 121a can be provided on end cap 121. Electrode terminals 121a can be used for electrical connection with cell assembly 123 for outputting or inputting electrical energy from battery cell 120. In some embodiments, end cap 121 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 120 reaches a threshold. The end cap 121 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present invention does not impose any special limitations on this. In some embodiments, an insulating member can also be provided on the inner side of the end cap 121. The insulating member can be used to isolate the electrical connection components inside the housing 122 from the end cap 121 to reduce the risk of short circuit. For example, the insulating member can be plastic, rubber, etc.

[0056] The housing 122 is a component used to cooperate with the end cap 121 to form the internal environment of the battery cell 120, wherein the formed internal environment can accommodate the cell assembly 123, electrolyte, and other components. The housing 122 and the end cap 121 can be independent components. An opening can be provided on the housing 122, and the end cap 121 can be used to close the opening to form the internal environment of the battery cell 120. Alternatively, the end cap 121 and the housing 122 can be integrated. Specifically, the end cap 121 and the housing 122 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 122, the end cap 121 closes the housing 122. The housing 122 can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 122 can be determined according to the specific shape and size of the cell assembly 123. The shell 122 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This embodiment of the utility model does not impose any special restrictions on this.

[0057] The cell assembly 123 is the component in the battery cell 120 where the electrochemical reaction takes place. The housing 122 may contain one or more cell assemblies 123. The cell assembly 123 is mainly formed by winding or stacking electrode sheets, wherein the electrode sheets include positive electrode sheets and negative electrode sheets, and a separator is usually provided between the positive electrode sheets and the negative electrode sheets.

[0058] The electrode mainly consists of a thin sheet-like current collector and an active material coated on the current collector. The portions of the positive electrode (cathode electrode) and negative electrode (anode electrode) containing active material constitute the main body of the battery cell assembly, while the portions of the positive and negative electrodes without active material each constitute tabs 123a. The positive and negative tabs can be located together at one end of the main body or at opposite ends of the main body. During the charging and discharging process of the battery device 100, the positive and negative active materials react with the electrolyte, and the tabs 123a connect to the electrode terminals to form a current loop.

[0059] The battery device can also be called a battery pack. A battery pack is a complete battery system that combines multiple battery cells (cells) by connecting them in series and parallel, and integrates components such as a battery management system (BMS) and a thermal management system.

[0060] The battery management system is mainly used to intelligently manage and maintain the voltage of each battery, prevent overcharging and over-discharging, extend the battery's lifespan, and monitor the battery's status.

[0061] Vibrations are generated during vehicle operation and are synchronously transmitted to the battery management system. When the vibration response exceeds the upper limit that the battery management system can withstand, the battery management system will lose the signal and will be unable to transmit the signal from the battery device to the vehicle.

[0062] Combination Figures 4 to 6 The battery unit includes various functional components such as a high-voltage distribution box 140, relays, a battery management system 160, fuses, and pre-charge resistors. The battery unit achieves electrical connection with external systems (such as motor controllers and chargers) through a modular interface and wiring harness 161.

[0063] The battery management system 160 is installed on the bottom side of the battery cell 120, away from the casing 110. The mounting bracket 150 of the battery management system 160 needs to be adequately secured to ensure reliable connection between the battery management system 160 and the external wiring harness 161. However, the battery cell 120 is not suitable for a locking structure to secure the mounting bracket 150; therefore, the mounting bracket 150 needs to be designed to be large (extending across the battery cell 120) or connected to the casing 110 frame 113 via an auxiliary structure. However, this results in a less compact battery device with a larger overall size.

[0064] To address the aforementioned issues, this application provides a battery device comprising a housing 110, a plurality of battery cells 120, a pressure strip 130, a high-voltage distribution box 140, a mounting bracket 150, and a battery management system 160.

[0065] The container 110 includes a bottom, a frame 113 arranged around the edge of the bottom and forming a receiving space, and a crossbeam 114 disposed in the receiving space and extending along a first direction. The crossbeam 114 divides the receiving space into a first compartment 115 and a second compartment 116 arranged along a second direction perpendicular to the first direction.

[0066] Multiple battery cells 120 are arranged side by side within the first compartment 115. Specifically, the multiple battery cells 120 include multiple rows of battery cells arranged in a first direction, and each row of battery cells includes multiple battery cells arranged along a second direction.

[0067] A retaining strip 130 is disposed on the side of the battery cell 120 away from the bottom of the casing. One end of the retaining strip 130 along the second direction is connected to the frame 113, and the other end is connected to the crossbeam 114 to fix the battery cell 120 within the first compartment 115. Each retaining strip 130 fixes a row of battery cells 120 within the first compartment 115. See [reference needed]. Figure 6 .

[0068] The high-voltage distribution box 140 is located inside the second compartment 116. The high-voltage distribution box 140 (commonly known as PDU, short for Power Distribution Unit) is a core component of the high-voltage system of new energy vehicles, mainly responsible for the distribution, control and protection of the high-voltage electrical energy output by the power battery device.

[0069] Mounting bracket 150 is disposed on the side of the accommodating space away from the bottom of the enclosure. One end of mounting bracket 150 along the second direction is connected to enclosure 110, and the other end is connected to pressure strip 130. Battery management system 160 is mounted on mounting bracket 150.

[0070] In the technical solution of this application, one end of the mounting bracket 150 is locked to the housing 110 of the battery device, and the other end is locked to the pressure strip 130 that fixes the battery cell 120. While ensuring that the mounting bracket 150 is fully fixed, it is beneficial to reduce the volume of the mounting bracket 150 and improve the problem of the battery device's structure being not compact enough and its volume being large.

[0071] The mounting bracket 150 includes a first portion located on the side of the first compartment 115 away from the bottom and a second portion located on the side of the second compartment 116 away from the bottom. The first portion of the mounting bracket 150 covers the first compartment 115, and the second portion covers the second compartment 116, which helps to improve space utilization and make the battery device structure more compact. Furthermore, the mounting bracket 150 is located on the side of the high-voltage distribution box 140 away from the bottom of the compartment 110, which can provide a certain degree of protection for the high-voltage distribution box 140. In the event of accidental deformation of the battery device, it can prevent the high-voltage distribution box 140 from being damaged by deformation, thus reducing the probability of short circuits caused by accidental deformation of the battery device.

[0072] In some embodiments, the first portion of the mounting bracket 150 is connected to the pressure strip 130. The first portion of the mounting bracket 150 covering the first compartment 115 and connected to the pressure strip 130 eliminates the need for a connection structure extending to the frame of the compartment 110, thus offering the advantages of a compact structure and small space occupation.

[0073] In some embodiments, the first part is connected to the pressure strip 130 via a first cable tie 170, and the mounting bracket 150 is fixed to the pressure strip 130 via the first cable tie 170, thereby increasing the number of locking points of the mounting bracket 150. Furthermore, connecting the pressure strip 130 and the mounting bracket 150 via the first cable tie 170 has the advantages of simple structure and high installation efficiency.

[0074] In some embodiments, an elastic member 180 is provided between the mounting bracket 150 and the battery cell 120 in the first compartment 115. The elastic member 180 is compressed between the mounting bracket 150 and the battery cell 120 to ensure that the mounting bracket 150 is stably supported, which helps to prevent the mounting bracket 150 from displacing relative to the battery cell, thereby ensuring a reliable connection between the battery management system 160 and the wiring harness 161.

[0075] In some embodiments, the elastic member 180 includes foam to ensure that the mounting bracket 150 is stably supported, which helps to prevent the mounting bracket 150 from shifting relative to the battery cell, thereby ensuring a reliable connection between the battery management system 160 and the wiring harness 161.

[0076] See Figure 5 The mounting bracket 150 includes a bracket body 151 and a first connecting portion 152. The bracket body 151 extends from the second compartment 116 towards the first compartment 115. The first connecting portion 152 protrudes from the bracket body 151 in a second direction and is tied together with the pressure strip 130 by a first cable tie 170. This increases the number of locking points of the mounting bracket 150. Furthermore, connecting the pressure strip 130 and the mounting bracket 150 by the first cable tie 170 has the advantages of simple structure and high installation efficiency.

[0077] In some embodiments, the mounting bracket 150 further includes a second connecting portion 153 and a third connecting portion 154. The second connecting portion 153 is disposed at one end of the bracket body 151 along the first direction and is connected to the crossbeam 114. The third connecting portion 154 is disposed at the other end of the bracket body 151 along the first direction and is connected to the crossbeam 114.

[0078] The mounting bracket 150 is locked and fixed at both ends along the first direction, which improves the stability of the mounting bracket 150 and can effectively prevent the battery management system 160 from separating from the wiring harness.

[0079] In some embodiments, the mounting bracket 150 further includes a fourth connecting portion 155 and a fifth connecting portion 156. The fourth connecting portion 155 is disposed at one end of the bracket body 151 along the first direction and is connected to the high-voltage distribution box 140. The fifth connecting portion 156 is disposed at the other end of the bracket body 151 along the first direction and is connected to the housing 110.

[0080] Typically, the mounting bracket 150 needs to be locked and secured at its four corners; otherwise, the connectors of the battery management system 160 and the wiring harness 161 are prone to failure during vibration, which would prevent the vehicle from receiving signals from the battery device.

[0081] Furthermore, the fourth connecting part 155 and the fifth connecting part 156 are both located at one end of the frame 113 of the bracket body 151 near the end of the housing 110 along the second direction. The fourth connecting part 155 and the fifth connecting part 156 are respectively located at both ends of the bracket body 151 along the first direction. The second connecting part 153 and the third connecting part 154 are respectively located at both ends of the bracket body 151 along the first direction. The second connecting part 153, the third connecting part 154, the fourth connecting part 155 and the fifth connecting part 156 form a four-point fixing and locking. Furthermore, the first connecting part 152 of the mounting bracket 150 is connected to the pressure strip 130 to form another fixing and locking point, which is beneficial to further increase the locking points of the mounting bracket 150, so as to improve the stability and safety of the mounting bracket 150.

[0082] In some embodiments, the housing 110 further includes a reinforcing beam 117 connecting the crossbeam 114 and the frame 113, and a fifth connecting portion 156 is connected to the reinforcing beam 117. The reinforcing beam 117 not only improves the structural strength of the housing 110, but also serves as a fixing structure for the fixed mounting bracket 150. The same component has two functions, which helps to reduce the size of the battery device while ensuring the strength requirements of the battery device.

[0083] See Figure 6The reinforcing beam 117 is provided with a mounting base 118 for connecting the fifth connecting part 156. The fifth connecting part 156 extends from the bracket body 151 towards the bottom of the box body 110, see [reference needed]. Figure 7 The fifth connecting part 156 is connected to the mounting base 118 by bolts at one end near the bottom of the box.

[0084] In summary, the technical solution of this application addresses the existing mounting bracket 150 used to fix BMS components, whose design structure fundamentally affects the vibration response of the BMS. Conventional mounting brackets require additional bolts at the four corners to ensure structural strength, but due to limited space within the battery device, standard four-corner fixing brackets cannot be designed. This invention provides a bracket that can be fixed above the module (without bolts on the module side).

[0085] Due to the influence of various components within the battery device and limited space, the mounting bracket of the battery management system often cannot be locked onto a flat surface. The mounting bracket 150 needs to be fixed at all four corners. The lack of fixing feet will cause the response spectrum of the battery management system 160 to increase during vibration. This application uses foam and a first cable tie to replace the fixing feet of the mounting bracket, thereby reducing the vibration response and enabling it to meet the normal use of the BMS connector.

[0086] like Figure 7 As shown, the battery management system 160 is fixed to the mounting bracket 150 at its four corners with nuts, and the wiring harness 161 is fixed to the mounting bracket 150 with the second cable tie 190. The connector plug on the wiring harness 161 is mated with the main connector socket of the battery management system; (the wiring harness is mated with the BMS to transmit the signals in the BMS to the vehicle).

[0087] like Figure 4 As shown, the mounting bracket 150 is projected perpendicularly to the bottom of the enclosure, with half of it in the high-pressure chamber and half above the module; (the thickness of the mounting bracket is between 1.5mm and 2.5mm).

[0088] like Figure 5 As shown, the mounting bracket 150 has a total of four locking points, which are respectively locked to the top cover and the enclosure of the high-voltage distribution box 140, totaling four bolt locking points. The projections of these four locking points perpendicular to the bottom of the enclosure all fall on the second compartment 116 where the high-voltage distribution box is located. Since the battery cell is composed of battery cells, it is impossible to add bolts to fix it on top.

[0089] like Figure 5 As shown, the mounting bracket 150 is projected perpendicular to the bottom of the box and is fixed on one side above the cell module with cable ties. The mounting bracket 150 and the shoulder strip of the cell are tied together with the cable ties to form a fixing point.

[0090] like Figure 6As shown, the battery assembly has three foam pads. The foam is made of DPF-12 and is attached to the cell module and the composite strip on the shoulder of the cell with single-sided adhesive. It is interference-fitted with the mounting bracket 150 to assist in supporting the mounting bracket 150. (Requirement: The foam should be able to compress by 10% even under extreme conditions, based on dimensional chain calculations, to ensure long-term effective support).

[0091] The standard mounting bracket 150 requires additional fastener fixing points at its four corners for stability. Without these four-point fixation, the PACK vibration response will be amplified, often exceeding the BMS connector's withstand threshold, causing BMS signal loss during vehicle operation (threshold V1 for the unsealed connector within the PACK).

[0092] This application eliminates the fixing point of the battery management system near the battery cell, replacing it with a solution using cable ties and foam support. This expands the BMS placement scenarios, allowing it to be placed above the module without bolt fixing. Simultaneously, the structural strength of the mounting bracket 150 is reinforced, enabling the BMS to effectively receive and transmit current signals during vehicle operation.

[0093] The above are merely exemplary embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery device, characterized in that, include: The container (110) includes a bottom, a frame (113) arranged around the edge of the bottom and forming a receiving space, and a crossbeam (114) disposed in the receiving space and extending along a first direction, the crossbeam (114) dividing the receiving space into a first compartment (115) and a second compartment (116) arranged along a second direction perpendicular to the first direction. Multiple battery cells (120) are arranged side by side inside the first compartment (115); A pressure strip (130) is disposed on the side of the battery cell (120) away from the bottom of the box. One end of the pressure strip (130) along the second direction is connected to the frame (113), and the other end is connected to the crossbeam (114) to fix the battery cell (120) inside the first compartment (115). A high-voltage distribution box (140) is installed inside the second compartment (116); Mounting bracket (150) is disposed on the side of the accommodating space away from the bottom of the box. One end of the mounting bracket (150) along the second direction is connected to the box body (110), and the other end is connected to the pressure strip (130). A battery management system (160) is mounted on the mounting bracket (150).

2. The battery device according to claim 1, characterized in that, The mounting bracket (150) includes a first portion located on the side of the first compartment (115) away from the bottom of the box and a second portion located on the side of the second compartment (116) away from the bottom of the box.

3. The battery device according to claim 2, characterized in that, The first part of the mounting bracket (150) is connected to the pressure strip (130).

4. The battery device according to claim 3, characterized in that, The first part is connected to the pressure strip (130) by a first cable tie (170).

5. The battery device according to claim 1, characterized in that, An elastic component (180) is provided between the mounting bracket (150) and the battery cell (120) in the first compartment.

6. The battery device according to claim 5, characterized in that, The elastic component (180) includes foam.

7. The battery device according to claim 1, characterized in that, The mounting bracket (150) includes: The support body (151) extends from the second compartment (116) to the first compartment (115); The first connecting part (152) protrudes from the bracket body (151) along the second direction and is tied together with the pressure strip (130) by the first cable tie (170).

8. The battery device according to claim 7, characterized in that, The mounting bracket (150) also includes: The second connecting part (153) is disposed at one end of the support body (151) along the first direction and is connected to the crossbeam (114). The third connecting part (154) is disposed at the other end of the support body (151) along the first direction and is connected to the crossbeam (114).

9. The battery device according to claim 7, characterized in that, The mounting bracket (150) also includes: The fourth connecting part (155) is disposed at one end of the bracket body (151) along the first direction and is connected to the high voltage distribution box (140). The fifth connecting part (156) is disposed at the other end of the support body (151) along the first direction and is connected to the box (110).

10. The battery device according to claim 9, characterized in that, The housing (110) also includes a reinforcing beam (117) connecting the crossbeam (114) and the frame (113), and the fifth connecting part (156) is connected to the reinforcing beam (117).

11. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 10.

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