Battery devices and electrical equipment

Abstract

The present application discloses a battery device and electrical equipment, which relates to the technical field of power battery devices. The battery device includes a box, a battery cell, an integrated assembly, a battery management module and an integrated busbar assembly. The box is provided with a receiving chamber, and the receiving chamber is provided with a battery installation area, a high-voltage area and a control area; the battery cell is arranged in the battery installation area; the integrated assembly includes a high-voltage box and a monitoring module installed in the high-voltage box, and the high-voltage box and the monitoring module are both arranged in the high-voltage area; the battery management module is arranged in the control area; the integrated busbar assembly is electrically connected to the battery cell, and the monitoring module is electrically connected to the integrated busbar assembly and the battery management module respectively. By arranging the high-voltage box and the monitoring module to be integrated in the high-voltage area, and the battery management module is centrally installed in the control area, the layout of the components in the box of the battery device can be optimized, the utilization rate of the internal space of the box can be improved, and the volume of the battery device can be reduced, and the volume energy density of the battery device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of power battery devices, and in particular to a battery device and an electrical device. Background Art

[0002] The battery box is provided with a receiving cavity, in which not only the battery cells need to be installed, but also the high-voltage box, the battery management module and the monitoring module need to be allocated installation positions. As users' demand for the volume energy density of battery devices increases, it is required to improve the space utilization of the box as much as possible. The current design has compressed the volume of each component as much as possible and reduced the spacing between components, but it still cannot meet user needs. Utility Model Content

[0003] The main purpose of this application is to propose a battery device and electrical equipment, aiming to solve the current technical problems of large battery devices and low volume energy density.

[0004] To achieve the above-mentioned objectives, according to some embodiments of the present application, the present application provides a battery device, including a case, a battery cell, an integrated assembly, a battery management module and an integrated busbar assembly, the case being provided with a accommodating cavity, the accommodating cavity being provided with a battery installation area, a high-voltage area and a control area; the battery cell being arranged in the battery installation area; the integrated assembly comprising a high-voltage box and a monitoring module installed on the high-voltage box, the high-voltage box and the monitoring module being both arranged in the high-voltage area; the battery management module being arranged in the control area; the integrated busbar assembly being electrically connected to the battery cell, and the monitoring module being electrically connected to the integrated busbar assembly and the battery management module, respectively.

[0005] By integrating the high-voltage box and the monitoring module in the high-voltage area and centrally installing the battery management module in the control area, the layout of the components inside the battery device box can be optimized, the utilization rate of the internal space of the box can be improved, and the volume of the battery device can be reduced, thereby improving the volume energy density of the battery device.

[0006] In some embodiments, the high voltage region and the control region are disposed on the same side of the battery installation region, and both the high voltage region and the control region are adjacent to the battery installation region.

[0007] By arranging the high-voltage area and the control area on the same side of the battery installation area and arranging them adjacent to the battery installation area, the space utilization rate of the box can be improved, thereby reducing the volume of the battery device and further improving the volume energy density of the battery device.

[0008] In some embodiments, the battery device also includes a first connector, which is electrically connected to the integrated busbar assembly, and the high-voltage box includes a box body; the monitoring module includes a substrate and a second connector installed on the substrate, the substrate is installed on the box body, the substrate is electrically connected to the battery management module, and the first connector is plugged into the second connector.

[0009] By installing the substrate of the monitoring module on the box body, the physical structure integration of the high-voltage box and the monitoring module is achieved, the installation between the structural components is more compact, and the volume occupancy can be reduced. The substrate is electrically connected to the battery management module, and the first connector is electrically connected to the second connector and the integrated busbar assembly, which can realize the transmission of electrical signals and ensure the normal implementation of the monitoring function of the battery management module.

[0010] In some embodiments, the substrate is disposed on an outer side of the box body, and the second connector is a horizontal connector or a vertical connector.

[0011] By arranging the substrate on the outer side surface of the box body, there is no need to make structural changes to the internal components of the high-voltage box, the manufacturing process is simpler, and the possibility of signal interference can be reduced.

[0012] In some embodiments, the substrate is disposed on a side of the box body facing the battery cell; or, the substrate is disposed on a side of the box body facing the opening of the accommodating cavity; or, the substrate is disposed on a side of the box body along a first direction, and the first direction is an arrangement direction of the high-voltage area and the control area.

[0013] By selectively arranging the substrate at different positions on the outer side of the box body, the space utilization of the box body can be improved and the volume of the battery device can be reduced to meet different needs.

[0014] In some embodiments, the box body is provided with an installation cavity, the substrate is disposed in the installation cavity, the second connector extends out of the box body, and the insertion port of the second connector is disposed toward the battery cell.

[0015] By arranging the substrate in the box body, the space occupied can be further reduced, the volume of the battery device can be reduced, and the volume energy density of the battery device can be further improved.

[0016] In some embodiments, the box body includes a box body and a cover body movably mounted on the box body, the box body is provided with the mounting cavity and the mounting hole, the second connector extends out of the box body through the mounting hole, and the substrate is mounted on the box body.

[0017] By setting the box body to include a box body and a cover body movably installed on the box body, the second connector extends out of the box body through the installation hole, and the substrate is installed on the box body, which not only facilitates the installation and disassembly of the substrate and the second connector, but also facilitates the installation and maintenance of other components in the installation cavity.

[0018] In some embodiments, the number of the battery cells is multiple, and the multiple battery cells are configured as a battery module. The battery module is provided with a positive output terminal and a negative output terminal. A positive main relay and a negative main relay are provided in the box body. The positive output terminal is electrically connected to the positive main relay, and the negative output terminal is electrically connected to the negative main relay.

[0019] By arranging a positive main relay and a negative main relay in the box body of the high-voltage box, which are respectively connected to the positive output terminal and the negative output terminal of the battery module, the on-off of the circuit can be controlled by the relay to play a protective role.

[0020] In some embodiments, the number of the battery management modules and the number of the monitoring modules are both two, the monitoring modules and the battery management modules are electrically connected in a one-to-one correspondence, and the two battery management modules are stacked.

[0021] By electrically connecting the monitoring module and the battery management module one by one, signal transmission can be prevented from interference. By stacking the two management modules, the lateral size of the box can be reduced, thereby reducing the volume of the box.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0025] Figure 2 A schematic diagram of the exploded structure of a battery device according to some embodiments of the present application;

[0026] Figure 3A schematic structural diagram of a battery device according to some embodiments of the present application from one perspective;

[0027] Figure 4 A schematic diagram of a portion of the structure of a battery device according to some embodiments of the present application;

[0028] Figure 5 Another partial structural schematic diagram of a battery device according to some embodiments of the present application;

[0029] Figure 6 A schematic diagram of a structure in which a monitoring module of an integrated component of some embodiments of the present application is arranged on the side of a box body;

[0030] Figure 7 Another structural schematic diagram of the monitoring module of the integrated component of some embodiments of the present application being arranged on the side of the box body;

[0031] Figure 8 A schematic diagram of a structure in which a monitoring module of an integrated component of some embodiments of the present application is arranged on the top surface of a box body;

[0032] Fig. 9 Another structural schematic diagram of the monitoring module of the integrated assembly of some embodiments of the present application being arranged on the top surface of the box body;

[0033] Fig.10 This is another structural schematic diagram of a monitoring module of an integrated component of some embodiments of the present application being disposed in a mounting cavity of a box body.

[0034] Description of Figure Numbers:

[0035] 1000. Vehicles;

[0036] 100, battery device; 200, controller; 300, motor;

[0037] 10. Box body; 11. Upper cover; 12. Bottom plate; 20. Battery cell;

[0038] 1. Battery installation area; 2. High-voltage area; 3. Control area; 4. Integrated components; 41. High-voltage box; 411. Box body; 4111. Top surface; 42. Monitoring module; 421. Base plate; 422. Second connector; 4221. Vertical connector; 4222. Horizontal connector; 5. Battery management module; 6. Integrated busbar assembly; 7. Busbar.

[0039] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] It should be noted that all directional indications in this embodiment (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0045] The descriptions of directions such as "upper", "lower", "front", "back", "left", and "right" in this application are based on the directions shown in the drawings and are only used to explain the Figures 1 to 5 The relative position relationship between the components in the shown posture. If the specific posture changes, the directional indication will also change accordingly.

[0046] 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.

[0047] The battery box is provided with a receiving cavity, in which not only the battery cells need to be installed, but also the high-voltage box and the battery management module (full name in English: Battery Management Unit, referred to as BMU) and the monitoring module (full name in English: Cell Management Circuit, referred to as CMC), CMC is also called CSC (full name in English: Cell Supervision Circuit) to allocate installation positions. With the increasing demand for volume energy density of battery devices by users, it is required to improve the space utilization of the box as much as possible. The current design has already compressed the volume of each component as much as possible and reduced the distance between components, but it still cannot meet the needs of users well.

[0048] After careful research, the applicant discovered that in the related art, a high-voltage box would have a separate installation position, a battery management module and a monitoring module would be stacked as a group, and there would be at least two battery management modules and two monitoring modules in an electrical device, and each group would need to occupy a separate installation position. Generally speaking, the installation positions of the two groups of battery management modules and monitoring modules would be respectively set on both sides of the installation position of the high-voltage box, and these installation positions would occupy a larger assembly area of ​​the accommodating cavity. However, the high-voltage box, battery management module and monitoring module are all indispensable components of the battery device, and are necessary to realize the basic functions of the battery device and cannot be completely omitted. To this end, it is necessary to reduce the space occupied by these components while retaining them.

[0049] After further thinking, the applicant decided that since it is impossible to reduce the number of components, can the components be installed in the same area through integration, so that the space utilization rate will be improved. After research, the applicant found that the high-voltage box occupies a large space. Among the space areas occupied by the monitoring module and the battery management module, the monitoring module occupies a smaller space, and the battery management module occupies a relatively larger space. However, if all three components are integrated, the height of the box needs to be increased, which will increase the volume of the box. Therefore, can this be achieved by adjusting the existing structural layout and partial integration?

[0050] After adjusting and repeatedly verifying the structural layout, the applicant has provided a battery device, including a box, a battery cell, an integrated component, a battery management module and an integrated busbar component. The box is provided with a housing, and the housing is provided with a battery installation area, a high-voltage area and a control area; it is arranged in the battery installation area; the integrated component includes a high-voltage box and a monitoring module installed in the high-voltage box, and the high-voltage box and the monitoring module are both arranged in the high-voltage area; it is arranged in the control area; the integrated busbar component is electrically connected to the battery cell, and the monitoring module is electrically connected to the integrated busbar component and the battery management module respectively. By arranging the high-voltage box and the monitoring module to be integrated in the high-voltage area, and the battery management module is centrally installed in the control area, the layout of the components in the box of the battery device can be optimized, the utilization rate of the internal space of the box can be improved, and the volume of the battery device can be reduced, thereby improving the volume energy density of the battery device.

[0051] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The electrical equipment may be a vehicle 1000, and the vehicle 1000 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. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0052] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0053] Please refer to Figure 2 , Figure 2The exploded diagram of the battery device 100 provided in some embodiments of the present application. The battery device 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is contained in the box body 10. Among them, the box body 10 is used to provide a storage space for the battery cell 20, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include an upper cover 11 and a bottom plate 12, and the upper cover 11 and the bottom plate 12 cover each other, and the upper cover 11 and the bottom plate 12 jointly define a storage space for accommodating the battery cell 20. The bottom plate 12 can be a hollow structure with one end open, and the upper cover 11 can be a plate-like structure. The upper cover 11 covers the open side of the bottom plate 12, so that the upper cover 11 and the bottom plate 12 jointly define a storage space; the upper cover 11 and the bottom plate 12 can also be hollow structures with one side open, and the open side of the upper cover 11 covers the open side of the bottom plate 12. Of course, the box body 10 formed by the upper cover 11 and the bottom plate 12 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0054] The battery device 100 mentioned in the embodiment of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel or in mixed connection through a busbar.

[0055] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 20 .

[0056] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0057] In some embodiments, the battery device 100 may be a battery pack, which includes a case 10 and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case 10 .

[0058] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 10 by fixing the battery module in the box body 10 .

[0059] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 20 to the case 10 .

[0060] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 may also be a battery device module in which multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection, and the multiple battery device modules are then connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0061] Each battery cell 20 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 20 may be cylindrical, flat, rectangular, or in other shapes.

[0062] Please refer to Figure 3-Figure 5 According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10, a battery cell 20, an integrated component 4, a battery management module 5 and an integrated busbar component 6, the box body 10 is provided with a accommodating cavity, the accommodating cavity is provided with a battery installation area 1, a high-voltage area 2 and a control area 3; the battery cell 20 is arranged in the battery installation area 1; the integrated component 4 includes a high-voltage box 41 and a monitoring module 42 installed on the high-voltage box 41, the high-voltage box 41 and the monitoring module 42 are both arranged in the high-voltage area 2; the battery management module 5 is arranged in the control area 3; the integrated busbar component 6 is electrically connected to the battery cell 20, and the monitoring module 42 is electrically connected to the integrated busbar component 6 and the battery management module 5 respectively.

[0063] The box body 10 refers to the outer box part of the battery device 100. The box body 10 is formed with a receiving cavity, and a battery cell 20 is arranged in the receiving cavity. The battery cell 20 is also called a battery core. The number of battery cells 20 can be multiple. Multiple battery cells 20 can be arranged in a certain way, and the battery cells 20 can have multiple rows. The integrated busbar assembly 6 (full name in English: CellsContact System) can include a circuit board, a busbar 7 and a sampling part. The circuit board can be a printed circuit board, a flexible circuit board or a flexible die-cut circuit board, which is arranged above the battery cell. The circuit board extends along the arrangement direction of each row of battery cells 20, and multiple nickel sheets are arranged along the extension direction of the circuit board. The busbar 7 is also called a transition piece or a busbar sheet, which can be made of copper or aluminum. Copper can be called a copper bar, and aluminum can be called an aluminum bar. The busbar 7 is used to electrically connect to the output terminal of the battery cell 20 to transmit the electrical signal emitted by the battery cell 20 to the integrated busbar assembly 6. The nickel sheet can be electrically connected to each battery cell 20 through the busbar to collect the voltage signal of the battery cell 20. At the same time, a temperature sensor such as an NTC temperature sensor (NTC, Negative Temperature Coefficient) can be set to collect the temperature parameters of the battery cell 20. The current sensor can be set to collect the current signal of the battery cell 20. These voltage signals, current signals and temperature parameter signals can be transmitted to the monitoring module 42 through the integrated busbar assembly 6. The monitoring module 42 can transmit the signal to the battery management module 5 to realize the data collection, transmission and monitoring of the voltage signal, current signal and temperature parameter signal of each battery cell 20. Of course, the battery management module 5 can also transmit these signals to the BMS (full name in English: Battery Management System, i.e., battery management system). Through the BMS, each battery cell 20 is intelligently managed and maintained to prevent the battery cell 20 from being overcharged and over-discharged, and to extend the service life of the battery cell 20. At the same time, the status of the battery cell 20 is monitored to ensure the safe and stable operation of the battery device 100.

[0064] In the related art, taking the example of two monitoring modules 42 and two battery management modules 5, one monitoring module 42 and one battery management module 5 form a group, which needs to occupy one installation area, and two groups need two installation areas. Generally, the two installation areas are respectively arranged on both sides of the high-voltage area 2 where the high-voltage box 41 is located, which occupies a large volume of the battery device 100. In the above-mentioned embodiment of the present application, the accommodating cavity is configured to include a battery installation area 1, a high-voltage area 2 and a control area 3; the battery cell 20 is arranged in the battery installation area 1, the monitoring module 42 and the high-voltage box 41 are arranged in the high-voltage area 2 in an integrated manner, and the battery management module 5 is arranged in the control area 3. That is to say, in the embodiment of the present application, only one high-voltage area 2 and one control area 3 are arranged, the monitoring module 42 is integrated in the high-voltage area 2 where the high-voltage box 41 is located, and the battery management module 5 is integrated in the control area 3, which can more effectively utilize the space inside the box 10. Specifically, referring to Figure 4 , which is equivalent to dividing the previous three areas into two areas, saving the space of one area. Figure 4 In the figure, A is used to indicate that the empty area A can be used to arrange other components. Figure 5 Alternatively, by improving the shape or installation direction of the high-voltage box 41, the shapes of the high-voltage region 2 and the control region 3 can be made longer along the first direction (X direction) shown in the figure, so that they can be made shorter along the second direction (Y direction), so that the internal component layout of the battery device 100 is more compact, the space utilization is improved, and the purpose of improving the volume energy density of the battery device 100 is achieved.

[0065] By arranging the high-voltage box 41 and the monitoring module 42 to be integrated in the high-voltage area 2, and the battery management module 5 to be centrally installed in the control area 3, the layout of the components inside the box 10 of the battery device 100 can be optimized, and the internal space utilization of the box 10 can be improved, thereby reducing the volume of the battery device 100 and improving the volume energy density of the battery device 100.

[0066] Please refer to Figure 4 or Figure 5 In some embodiments, the high voltage area 2 and the control area 3 are arranged on the same side of the battery installation area 1 , and both the high voltage area 2 and the control area 3 are adjacent to the battery installation area 1 .

[0067] Generally speaking, there are multiple battery cells 20 in the box 10, and the multiple battery cells 20 are arranged in multiple rows. The volume of the battery installation area 1 occupied by the battery cells 20 is relatively large. The installation area of ​​the battery cells 20 accounts for a larger proportion than the control area 3 and the high-voltage area 2, and is generally in a regular square form. In order to make full use of the space of the box 10, the high-voltage area 2 and the control area 3 can be set on the same side, such as Figure 4 or Figure 5As shown, the high voltage area 2 and the control area 3 are both arranged on one side of the battery installation area 1 along the Y direction, and are arranged adjacent to each other, specifically, along one edge of the battery installation area 1, which can improve space utilization.

[0068] By arranging the high-voltage area 2 and the control area 3 on the same side of the battery installation area 1 and adjacent to the battery installation area 1, the space utilization of the box 10 can be improved, thereby reducing the volume of the battery device 100 and further improving the volume energy density of the battery device 100.

[0069] In some embodiments, the battery device 100 also includes a first connector, which is electrically connected to the integrated busbar assembly 6, and the high-voltage box 41 includes a box body 411; the monitoring module 42 includes a substrate 421 and a second connector 422 installed on the substrate 421, the substrate 421 is installed on the box body 411, the substrate 421 is electrically connected to the battery management module 5, and the first connector is plugged into the second connector 422.

[0070] The first connector and the second connector 422 are both connectors. The first connector and the second connector 422 are used to play the role of electrical connection. The plug-in matching method is convenient for installation and disassembly. The naming distinction between the first connector and the second connector 422 is only the different installation positions, which does not mean that the two connectors must belong to different types or different structures. The monitoring module 42 includes a substrate 421 and a second connector 422 installed on the substrate 421. The substrate 421 is electrically connected to the second connector 422. The substrate 421 here can be a circuit board. The substrate 421 can be installed on the housing, specifically, it can be bonded or threaded or snap-in. The specific installation method of the substrate 421 is not limited in this application. The substrate 421 here is installed in the box body 411 of the high-voltage box 41, which refers to a physical connection, and does not involve an electrical connection relationship with the components in the high-voltage box 41. The substrate 421 is electrically connected to the battery management module 5, and the first connector is electrically connected to the second connector 422 and the integrated busbar assembly 6, so that the signal of the integrated busbar assembly 6 can be transmitted to the second connector 422 through the first connector, and then transmitted to the battery management module 5 through the substrate 421, so as to realize signal collection, transmission and monitoring. It should be noted that the signal transmitted from the integrated busbar assembly 6 to the second connector 422 includes but is not limited to a voltage signal, and may also include a current signal and a temperature parameter signal.

[0071] By installing the substrate 421 of the monitoring module 42 on the box body 411, the physical structure integration of the high-voltage box 41 and the monitoring module 42 is achieved, the installation between the structural components is more compact, and the volume occupancy can be reduced. The substrate 421 is electrically connected to the battery management module 5, and the first connector is electrically connected to the second connector 422 and the integrated busbar assembly 6, which can realize the transmission of electrical signals and ensure the normal implementation of the monitoring function of the battery management module 5.

[0072] Please refer to Figure 6 and Figure 7 In some embodiments, the substrate 421 is disposed on the outer side of the box body 411 , and the second connector 422 is a horizontal connector 4222 or a vertical connector 4221 .

[0073] Figure 6 The second connector 422 shown is a horizontal connector 4222. Figure 7 The second connector 422 shown is a vertical connector 4221. Those skilled in the art will understand that the horizontal connector 4222 and the vertical connector 4221 refer to the difference in the direction of the connector opening. The opening of the horizontal connector 4222 is oriented in the horizontal direction, which is the extension direction of the box body 10 in the embodiment of the present application, and the opening of the vertical connector 4221 is oriented in the vertical direction, which is perpendicular to the opening of the box body 10 in the embodiment of the present application, that is, Figure 4 The direction perpendicular to the paper surface. Those skilled in the art can set the type of the second connector 422 according to actual needs. The substrate 421 is arranged on the outer side of the box body 411 of the high-voltage box 41, and the arrangement structure of the internal components of the high-voltage box 41 does not need to be changed. It is also easier to install it directly on the outer side, and it can also reduce the possible signal interference between the components on the substrate 421 and the internal components of the high-voltage box 41.

[0074] By arranging the substrate 421 on the outer side of the box body 411, there is no need to make structural changes to the internal components of the high-voltage box 41, the manufacturing process is simpler, and the possibility of signal interference can be reduced.

[0075] Please refer to Figure 6 and Figure 7 In some embodiments, the substrate 421 is disposed on a side of the box body 411 facing the battery cell 20; or, please refer to Figure 8 and Fig. 9 The substrate 421 is disposed on a side of the box body 411 that faces the opening of the accommodating cavity. Figure 8 The second connector 422 shown is a horizontal connector 4222. Fig. 9 The second connector 422 is a vertical connector 4221. Alternatively, the substrate 421 is disposed on one side of the box body 411 along the first direction. Figure 4 or Figure 5 The direction indicated by X is also the arrangement direction of the high-pressure area 2 and the control area 3.

[0076] It should be noted that the number of monitoring modules 42 can be one or more. When there is one monitoring module, it is equivalent to concentrating the functions of the existing monitoring module 42 on the substrate 421 of one monitoring module 42. When the number of substrates 421 is one, the substrate 421 can be arranged on the side of the box body 411 facing the battery cell 20, that is, the side facing the battery installation area 1, or the side of the high-voltage box 41 and facing the battery cell 20. This can facilitate connection with the integrated busbar assembly 6 extending from the battery installation area 1. The second connector 422 here can be a horizontal connector 4222 or a vertical connector 4221, and arranging the substrate 421 on the side can reduce the height of the high-voltage box 41. Please refer to Figure 8 and Fig. 9 In other embodiments, the substrate 421 can be arranged on the top surface 4111 of the high-voltage box 41, that is, the side of the box body 411 facing the opening of the accommodating cavity, so that the second connector 422 has a larger installation space, which is convenient for electrical connection with the integrated busbar assembly 6 through the first connector or directly, and can also reduce the lateral size of the high-voltage box 41. In some other embodiments, the substrate 421 is arranged on one side of the box body 411 along the first direction, where the first direction is as shown in FIG. Figure 4 In the direction indicated by X, the box body 411 can be made narrower, that is, the dimension along the first direction is made longer and the dimension along the second direction (Y direction) is made shorter, so that the structural layout is more compact, thereby improving the space utilization of the box body 10.

[0077] When the number of monitoring modules 42 is two or more than two, that is, when there are two substrates 421, those skilled in the art can set it according to actual needs, and reasonably set the positions of the two substrates 421 according to the size requirements of the box body 10. For example, they can be both set on the top surface 4111 of the box body 10, or they can be both set on the side of the box body 10 facing the battery cell 20, or they can be both set on one side of the box body 411 along the first direction, or one monitoring module 42 can be set on each side along the first direction. Of course, the two substrates 421 can also be set separately, one can be set on the top surface 4111 of the box body 10, and the other can be set on the side of the box body 10 facing the battery cell 20, etc. Those skilled in the art can set it according to the needs of spatial arrangement.

[0078] By selectively arranging the substrate 421 at different positions on the outer side of the box body 411 , the space utilization of the box body 10 can be improved to meet different requirements and the volume of the battery device 100 can be reduced.

[0079] Please refer to Fig.10In some embodiments, the box body 411 is provided with an installation cavity, the substrate 421 is disposed in the installation cavity, the second connector 422 extends out of the box body 411 , and the plug-in interface of the second connector 422 is disposed toward the battery cell 20 .

[0080] In order to make full use of the internal space of the box body 411 of the high-voltage box 41, that is, the space of the installation cavity, the substrate 421 can be set in the installation cavity, and the second connector 422 extends from the installation cavity through the side wall of the box body 411 to the outside of the box body 411, and the plug interface of the second connector 422 is set toward the battery cell 20, so as to facilitate plugging with the first connector. At this time, a horizontal connector 4222 is generally used. Of course, in other embodiments, the second connector 422 can also pass through the top surface 4111 of the box body 411, and the second connector 422 can use a vertical connector 4221.

[0081] By disposing the substrate 421 in the box body 411 , the space occupied can be further reduced, the volume of the battery device 100 can be reduced, and the volume energy density of the battery device 100 can be further improved.

[0082] In some embodiments, the box body 411 includes a box body and a cover body movably mounted on the box body, the box body is provided with a mounting cavity and a mounting hole, the second connector 422 extends out of the box body through the mounting hole, and the substrate 421 is mounted on the box body.

[0083] The cover body can be detachably connected to the box body, so that the cover body can be opened to repair or replace the parts in the box body. The cover body can also be installed on the box body 411 in an openable and closable manner, so that the cover body can be opened without removing the cover body, and the parts in the box body can also be repaired or replaced. A mounting hole is set on a side wall of the box body, and the second connector 422 extends out of the box body through the mounting hole, while the substrate 421 remains in the mounting cavity, and the substrate 421 is installed on the side wall, which can be specifically threaded or bonded, so that the installation and removal of the substrate 421 and the second connector 422 can also be convenient.

[0084] By setting the box body 411 to include a box body and a cover body movably installed on the box body, the second connector 422 extends out of the box body through the installation hole, and the substrate 421 is installed on the box body, not only can the installation and disassembly of the substrate 421 and the second connector 422 be convenient, but also the installation and maintenance of other components in the installation cavity can be convenient.

[0085] In some embodiments, there are multiple battery cells 20, and the multiple battery cells 20 are configured as a battery module. The battery module is provided with a positive output terminal and a negative output terminal. A positive main relay and a negative main relay are provided in the box body 411. The positive output terminal is electrically connected to the positive main relay, and the negative output terminal is electrically connected to the negative main relay.

[0086] The high-voltage box 41 also includes components arranged in the box body 411. Multiple battery cells 20 are connected in series or in parallel to form an integral battery module. The entire battery module forms a positive output terminal and a negative output terminal to the outside for outputting voltage to the outside. In order to improve the safety of the battery device 100, the positive output terminal is electrically connected to the main positive relay, and the negative output terminal is electrically connected to the main negative relay. The main positive relay and the main negative relay are used to control the on and off of the circuit to play a protective role. At the same time, the high-voltage box 41 can also be electrically connected to an external charging interface for charging and discharging the battery device 100.

[0087] By arranging a positive main relay and a negative main relay in the box body 411 of the high-voltage box 41, which are respectively connected to the positive output terminal and the negative output terminal of the battery module, the on-off of the circuit can be controlled by the relay to play a protective role.

[0088] In some embodiments, the number of the battery management modules 5 and the number of the monitoring modules 42 are both two, the monitoring modules 42 and the battery management modules 5 are electrically connected in a one-to-one correspondence, and the two battery management modules 5 are stacked.

[0089] When there are two battery management modules 5, generally, the height of one battery management module 5 is less than the height of the box 10, and the battery management modules 5 can be stacked in the control area 3, that is, the battery management modules 5 are placed in the vertical direction, where the vertical direction is perpendicular to Figure 5 In the direction of the middle paper, the installation height after stacking is not higher than the height of the box 10, which can reduce the occupation of the horizontal dimension of the box 10, thereby reducing the volume of the battery device 100. At the same time, the number of monitoring modules 42 is also two, and one monitoring module 42 is correspondingly connected to one battery management module 5 to realize signal transmission and monitoring.

[0090] By electrically connecting the monitoring module 42 and the battery management module 5 in a one-to-one correspondence, signal transmission can be prevented from interference. By stacking the two battery management modules 5, the lateral size of the box 10 can be reduced, thereby reducing the volume of the box 10.

[0091] According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10, a battery cell 20, an integrated component 4, a battery management module 5, a first connector and an integrated busbar component 6, the box body 10 is provided with a accommodating chamber, the accommodating chamber is provided with a battery installation area 1, a high-voltage area 2 and a control area 3, the high-voltage area 2 and the control area 3 are arranged on the same side of the battery installation area 1, and the high-voltage area 2 and the control area 3 are both adjacent to the battery installation area 1; the battery cell 20 is arranged in the battery installation area 1; the integrated component 4 includes a high-voltage box 41 and a monitoring module 42 installed on the high-voltage box 41, the high-voltage box 41 and the monitoring module 42 are both arranged in the high-voltage area 2; the battery management module 5 is arranged in the control area 3; the integrated busbar component 6 is electrically connected to the battery cell 20, the high-voltage box 41 includes a box body 411; the monitoring module 42 includes a substrate 421 and a second connector 422 installed on the substrate 421, the substrate 421 is installed in the box body 411, the substrate 421 is electrically connected to the battery management module 5, and the first connector is electrically connected to the second connector 422 and the integrated busbar component 6. Specifically, the substrate 421 is disposed on the outer side of the box body 411 or in the mounting cavity of the box body 411, and the second connector 422 is a horizontal connector 4222 or a vertical connector 4221. The embodiment of the present application has the advantages of reducing the volume of the battery device 100 and improving the volume energy density of the battery device 100.

[0092] According to some embodiments of the present application, the present application further provides an electric device, which includes a device body and the above-mentioned battery device 100. Since the electric device includes all technical solutions of any embodiment of the above-mentioned battery device 100, it at least has all the beneficial effects brought by any of the above-mentioned embodiments, which will not be described one by one here.

[0093] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: include: A box body, wherein the box body is provided with a receiving cavity, and the receiving cavity is provided with a battery installation area, a high voltage area and a control area; A battery cell, arranged in the battery installation area; A battery management module is arranged in the control area; a first connector; An integrated component, the integrated component includes a high-voltage box and a monitoring module installed on the high-voltage box, the high-voltage box and the monitoring module are both arranged in the high-voltage area; the high-voltage box includes a box body, the monitoring module includes a substrate and a second connector installed on the substrate, the substrate is installed on the box body, the substrate is electrically connected to the battery management module, and the first connector is plugged and matched with the second connector; as well as An integrated busbar assembly, wherein the integrated busbar assembly is electrically connected to the battery cell, the monitoring module is electrically connected to the integrated busbar assembly and the battery management module respectively, and the first connector is electrically connected to the integrated busbar assembly.

2. The battery device according to claim 1, characterized in that: The high voltage region and the control region are arranged on the same side of the battery installation region, and both the high voltage region and the control region are adjacent to the battery installation region.

3. The battery device according to claim 1, characterized in that: The substrate is arranged on the outer side of the box body, and the second connector is a horizontal connector or a vertical connector.

4. The battery device according to claim 3, characterized in that: The substrate is disposed on a side of the box body facing the battery cell; or, The substrate is disposed on a side of the box body facing the opening of the accommodating cavity, or, The substrate is disposed on one side of the box body along a first direction, and the first direction is an arrangement direction of the high-voltage area and the control area.

5. The battery device according to claim 1, characterized in that: The box body is provided with an installation cavity, the substrate is arranged in the installation cavity, the second connector extends out of the box body, and the insertion port of the second connector is arranged toward the battery cell.

6. The battery device according to claim 5, characterized in that: The box body comprises a box body and a cover body movably mounted on the box body, the box body is provided with the mounting cavity and the mounting hole, the second connector extends out of the box body through the mounting hole, and the substrate is mounted on the box body.

7. The battery device according to claim 1, characterized in that: The number of the battery cells is multiple, and the multiple battery cells are configured as a battery module. The battery module is provided with a positive output terminal and a negative output terminal. A positive main relay and a negative main relay are provided in the box body. The positive output terminal is electrically connected to the positive main relay, and the negative output terminal is electrically connected to the negative main relay.

8. The battery device according to claim 1 or 2, characterized in that: The number of the battery management modules and the number of the monitoring modules are both two, the monitoring modules and the battery management modules are electrically connected in a one-to-one correspondence, and the two battery management modules are stacked.

9. An electrical device, characterized in that: The electrical equipment comprises an equipment body and a battery device according to any one of claims 1 to 8, wherein the battery device is arranged on the equipment body.

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