Battery device and power utilization device with same

Abstract

The invention discloses a battery device and a power utilization device with the battery device, and the battery device comprises a shell which defines a containing cavity; the battery module is arranged in the accommodating cavity; the circuit board module is arranged in the containing cavity, the circuit board module is electrically connected with the battery module, the battery management module is arranged in the containing cavity, the battery management module is electrically connected with the battery module, and the circuit board module is arranged between at least part of the battery management module and the battery module. According to the battery device provided by the embodiment of the invention, the battery module and the battery management module are both arranged in the accommodating cavity, and at least the circuit board module is utilized to separate the magnetic field between the battery management module and the battery module, so that the volume of the battery device is reduced, the mass of the battery device is reduced, and the production cost of the battery device is reduced.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more specifically, to a battery device and an electrical device having the same. Background Technology

[0002] In related technologies, changes in the internal current of the battery cell module generate electromagnetic waves. These electromagnetic waves can cause electromagnetic interference to the information processing circuits inside the battery management module, resulting in a decrease in the overall vehicle performance or even a failure of the sampling system. Therefore, in order to shield the battery management module from electromagnetic interference, a shielding layer is set on the outside of the battery management module. The shielding layer is made of steel or aluminum plate. However, this leads to high battery cost and weight. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a battery device that, by placing both the battery module and the battery management module in a housing cavity, and by using at least a circuit board module to isolate the magnetic field between the battery management module and the battery module, facilitates a reduction in the size and weight of the battery device, and lowers the production cost of the battery device.

[0004] The present invention also proposes an electrical device having the aforementioned battery device.

[0005] A battery device according to a first aspect of the present invention includes: a housing defining a receiving cavity; a battery module disposed in the receiving cavity; a circuit board module disposed within the receiving cavity and electrically connected to the battery module; and a battery management module disposed in the receiving cavity, electrically connected to the battery module, and with the circuit board module disposed between at least a portion of the battery management module and the battery module.

[0006] According to the battery device of the present invention, by arranging both the battery module and the battery management module in the housing cavity, and at least using the circuit board module to isolate the magnetic field between the battery management module and the battery module, it is convenient to reduce the size and weight of the battery device and reduce the production cost of the battery device.

[0007] In addition, the battery device according to the above embodiments of the present invention may also have the following additional technical features:

[0008] According to some specific embodiments of the present invention, the battery management module is electrically connected to the circuit board module via a sampling harness, the sampling harness being located on the side of the circuit board module facing away from the battery module.

[0009] According to some optional embodiments of the present invention, the battery device further includes an insulating support member disposed between the battery module and the circuit board module.

[0010] According to some specific embodiments of the present invention, the sampling harness includes a first sampling harness, the battery management module includes an electronic control unit, the electronic control unit is fixed to the insulating support, and the electronic control unit is electrically connected to the circuit board module through the first sampling harness.

[0011] In some examples, the insulating support is provided with a first fixing part, and the circuit board module is provided with a first clearance area for avoiding the first fixing part, the first fixing part cooperating with the electronic control unit through the first clearance area.

[0012] In some embodiments, the battery device further includes a first wiring harness fixing part, the insulating support member is provided with a second fixing part, the circuit board module is provided with a second avoidance area for avoiding the second fixing part, the first wiring harness fixing part is adapted to cooperate with the second fixing part through the second avoidance area, and the first wiring harness fixing part cooperates with the sampling wiring harness.

[0013] In some embodiments, the sampling harness includes a second sampling harness, and the battery management module includes a battery intelligent control system, which is electrically connected to the circuit board module via the second sampling harness.

[0014] In some examples, the battery device further includes a magnetically shielded mounting bracket connected to the inner wall of the housing, with at least a portion of the battery intelligent control system located on the side of the mounting bracket opposite to the battery module.

[0015] Furthermore, the fixed bracket is provided with a second wire harness fixing part, which cooperates with the second sampling wire harness.

[0016] Furthermore, the housing includes a first shell portion, a second shell portion, and a crossbeam. The first shell portion and the second shell portion enclose the receiving cavity. The crossbeam is disposed in the receiving cavity. The battery module is disposed on one side of the crossbeam. The fixing bracket is connected to the crossbeam.

[0017] According to some optional embodiments of the present invention, the battery device further includes a temperature sampling harness electrically connected to the battery management module, the temperature sampling harness being located on the side of the circuit board module facing away from the battery module.

[0018] According to some specific embodiments of the present invention, the insulating support is provided with a sampling area, the circuit board module has a clearance opening, and the temperature sampling end of the temperature sampling harness is fixed to the sampling area through the clearance opening.

[0019] According to some embodiments of the present invention, the battery module includes a plurality of battery components, two adjacent battery components are electrically connected by an electrical connection portion, the insulating support is provided with a potting port, and the electrical connection portion and the positive and negative terminals of the battery module pass through the potting port.

[0020] According to some embodiments of the present invention, the circuit board module is provided with a sampling unit that cooperates with the battery module, the sampling unit being used to sample the operating status of the battery module.

[0021] According to some optional embodiments of the present invention, the circuit board module includes a plurality of separate circuit boards, the plurality of separate circuit boards are arranged along the length direction of the battery module, each of the separate circuit boards is provided with the sampling part, and the battery management module is electrically connected to each of the separate circuit boards.

[0022] According to some embodiments of the present invention, the battery management module includes a battery disconnect unit, which is electrically connected to the positive and negative terminals of the battery module through conductive elements.

[0023] According to some optional embodiments of the present invention, the battery device further includes a magnetic shielding element disposed between the conductive element and the circuit board module.

[0024] According to some specific embodiments of the present invention, the magnetic shielding component includes a metal plate and an insulating layer located on the surface of the metal plate. The metal plate is disposed on the circuit board module, and the insulating layer is provided between at least the conductive component and the metal plate.

[0025] According to some specific embodiments of the present invention, the magnetic shielding component is glued and fixed to the circuit board module, and the conductive component is glued and fixed to the magnetic shielding component.

[0026] According to some specific embodiments of the present invention, the battery circuit breaker unit further includes a housing, which is defined as a magnetically shielded housing capable of being magnetically shielded.

[0027] In some embodiments, the enclosure includes a metal component and an insulating outer layer covering the metal component.

[0028] According to some specific embodiments of the present invention, an insulating support is provided between the battery module and the circuit board module, the battery circuit breaker unit is fixed to the insulating support, and the circuit board module is provided with a third avoidance area for avoiding the battery circuit breaker unit.

[0029] In some embodiments, the insulating support is provided with a third fixing part, which cooperates with the battery disconnect unit through the third clearance area.

[0030] According to some specific embodiments of the present invention, the insulating support has a positioning part, the magnetic shielding member has a positioning mating part, and the positioning part passes through the circuit board module and mates with the positioning mating part.

[0031] According to some optional embodiments of the present invention, the battery device further includes an external terminal, which is disposed on the side of the circuit board module opposite to the battery module. There are at least two conductive elements, and the battery circuit breaker unit is electrically connected to the external terminal through another conductive element. There are at least two magnetic shielding elements and they are disposed corresponding to the conductive elements.

[0032] According to some specific embodiments of the present invention, the housing has a clearance opening through which the external terminal protrudes from the housing.

[0033] In some embodiments, an insulating support is provided between the battery module and the circuit board module, the external terminal is fixed to the insulating support, the insulating support is provided with a fourth fixing part, the circuit board module is provided with a fourth avoidance area for avoiding the fourth fixing part, and the fourth fixing part cooperates with the external terminal through the fourth avoidance area.

[0034] According to a second aspect of the present invention, an electrical device is provided, the electrical device comprising the battery device described in the first aspect of the present invention.

[0035] According to an embodiment of the present invention, the power device utilizes the battery device described in the first aspect of the present invention. By placing both the battery module and the battery management module in a receiving cavity, and at least using a circuit board module to isolate the magnetic field between the battery management module and the battery module, the volume and weight of the battery device can be reduced, and the production cost of the battery device can be lowered.

[0036] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0038] Figure 1 This is a schematic diagram of the structure of a battery device according to an embodiment of the present invention;

[0039] Figure 2This is a schematic diagram of the circuit board module, insulating support member, and battery management module according to an embodiment of the present invention.

[0040] Figure 3 This is a top view of the circuit board module, insulating support member, and battery management module according to an embodiment of the present invention;

[0041] Figure 4 This is an exploded view of the circuit board module, insulating support, and battery management module according to an embodiment of the present invention;

[0042] Figure 5 This is a top view of the circuit board module and insulating support member according to an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of the magnetic shielding component according to an embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the structure of the magnetic shielding component according to an embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the structure of a split circuit board according to an embodiment of the present invention;

[0046] Figure 9 This is a schematic diagram of the structure of the insulating support member according to an embodiment of the present invention;

[0047] Figure 10 This is an exploded view of the upper housing according to an embodiment of the present invention;

[0048] Figure 11 This is a structural schematic diagram of the battery intelligent control system, the fixing bracket, and the crossbeam according to an embodiment of the present invention;

[0049] Figure 12 This is an exploded view of the battery intelligent control system, the fixing bracket, and the crossbeam according to an embodiment of the present invention.

[0050] Figure 13 This is a schematic diagram of the battery intelligent control system and the fixing bracket according to an embodiment of the present invention;

[0051] Figure 14 This is a schematic diagram of the battery intelligent control system and the fixing bracket according to an embodiment of the present invention.

[0052] Reference numerals: 1. Battery assembly;

[0053] 10. Shell; 101. First shell section; 102. Second shell section; 11. Receiving cavity; 12. Clearance opening; 15. Crossbeam;

[0054] 20. Battery module; 21. Battery assembly;

[0055] 30. Circuit board module; 301. Third clearance area; 302. Fourth clearance area; 303. First clearance area; 304. Second clearance area; 305. Clearance port; 311. First sampling unit; 312. Second sampling unit; 32. Split circuit board; 321. Plug-in terminal;

[0056] 41. Battery circuit breaker unit; 42. External terminal; 43. Electronic control unit; 44. Battery intelligent control system;

[0057] 51. Conductive component; 511. First conductive part; 512. Second conductive part; 52. Magnetic shielding component; 521. Positioning and mating part; 53. Housing; 531. Metal part; 532. Insulating outer layer; 55. Fixing bracket;

[0058] 60. Insulating support; 62. Fourth fixing part; 63. First fixing part; 64. Second fixing part; 66. Positioning part; 67. Sampling area; 68. Glue inlet; 69. Fixing base;

[0059] 71. First sampling harness; 72. Second sampling harness; 73. Temperature sampling harness;

[0060] 81. First wire harness fixing part; 82. Second wire harness fixing part;

[0061] 91. Thermally conductive adhesive layer; 92. Sealing component; 93. Insulating component. Detailed Implementation

[0062] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0063] The battery device 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0064] like Figures 1-4 As shown, the battery device 1 according to an embodiment of the present invention includes a housing 10, a battery module 20, a circuit board module 30, and a battery management module.

[0065] The housing 10 defines a receiving cavity 11, the battery module 20 is disposed in the receiving cavity 11, and the circuit board module 30 is disposed in the receiving cavity 11. The circuit board module 30 is electrically connected to the battery module 20 to sample the temperature, voltage, current and other conditions of the battery module 20 during operation.

[0066] The battery management module is located in the housing cavity 11 and is electrically connected to the battery module 20. It is used to control the current shunting, switching on and off of the battery module 20.

[0067] At least a circuit board module 30 is provided between the battery management module and the battery module 20 to separate the battery management module and the battery module 20, so as to prevent the magnetic field and electromagnetic waves generated by the battery module 20 from interfering with the circuit in the battery management module, thereby ensuring the integrity of the signal in the battery management module and improving the safety of the system.

[0068] In some embodiments, the circuit board module 30 includes a metal layer that can be reused as an electromagnetic shielding layer. This allows the circuit board module 30 to isolate the magnetic field between the battery management module and the battery module 20, ensuring the integrity of signals in the battery management module and improving system safety. At the same time, it eliminates the need to repeatedly install the electromagnetic shielding layer, allowing space to be reserved for other components within the battery device 1, reducing the weight of the battery device 1, and lowering its cost.

[0069] In some examples, the material of circuit board module 30 is rolled copper.

[0070] Specifically, in order to separate the battery module and the battery management module, the existing battery packs will place the battery management module and the battery module in two separate spaces. A metal shell is set on the outside of the battery management module to separate the battery management module and the battery module. However, the metal shell is relatively heavy, which will result in a large overall weight of the battery pack and a high cost.

[0071] To address the problems in the prior art, the present invention places both the battery module 20 and the battery management module in the receiving cavity 11, which facilitates the improvement of the space utilization rate within the receiving cavity 11. At the same time, at least the circuit board module 30 is used to achieve electromagnetic isolation between the battery management module and the battery module 20. This facilitates the reduction of the volume of the battery device 1 and the space occupied by the battery device 1, and also facilitates the reduction of the weight of the battery device 1 and the reduction of the production cost of the battery device 1.

[0072] Therefore, according to the battery device 1 of the present invention, by arranging both the battery module 20 and the battery management module in the receiving cavity 11, the magnetic field between the battery management module and the battery module 20 is isolated by at least the circuit board module 30, which facilitates the reduction of the volume and mass of the battery device 1 and the reduction of the production cost of the battery device 1.

[0073] The battery device 1 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0074] In some specific embodiments of the present invention, such as Figures 1-4 As shown, the battery device 1 includes a housing 10, a battery module 20, a circuit board module 30, and a battery management module.

[0075] In some embodiments of the present invention, such as Figure 2 As shown, the battery management module is electrically connected to the circuit board module 30 through a sampling harness. The sampling harness is located on the side of the circuit board module 30 facing away from the battery module 20, so that the circuit board module 30 can separate the sampling harness and the battery module 20, and prevent the magnetic field generated by the battery module 20 from affecting the transmission of electrical signals in the sampling harness.

[0076] In some embodiments, such as Figure 2 , Figure 10 As shown, the battery management module includes a battery circuit breaker unit 41, which includes a magnetic shielding housing 53. The current in the sampling harness is a low-voltage current. The battery circuit breaker unit 41 has a high-voltage conductive part, and the current on the high-voltage conductive part is a high-voltage current. The magnetic shielding housing 53 separates the battery circuit breaker unit 41 from the sampling harness, so as to avoid the strong magnetic field generated by the high-voltage conductive part in the battery circuit breaker unit 41 from affecting the transmission of electrical signals in the sampling harness.

[0077] In some alternative embodiments of the present invention, such as Figure 3 , Figure 4 As shown, the battery device 1 also includes an insulating support 60, which is disposed between the battery module 20 and the circuit board module 30. The insulating support 60 is used to support the circuit board module 30 and the components on the side of the circuit board module 30 facing away from the battery module 20, so as to reduce the pressure on the circuit board module 30 and reduce the possibility of the circuit board module 30 being damaged.

[0078] In some embodiments, the insulating support 60 is fixed to the battery module 20, and the circuit board module 30 is disposed on the insulating support 60, so as to fix the circuit board module 30 by means of the insulating support 60.

[0079] In some examples, such as Figure 1 As shown, the insulating support 60 is fixed to the battery module 20 by the thermally conductive adhesive layer 91.

[0080] In some specific embodiments of the present invention, such as Figure 2 As shown, the sampling harness includes a first sampling harness 71, and the battery management module includes an electronic control unit 43. The electronic control unit 43 is fixed to the insulating support 60, and the electronic control unit 43 is electrically connected to the circuit board module 30 through the first sampling harness 71.

[0081] Specifically, the electronic control unit 43 is responsible for the intelligent monitoring, protection and coordination of the battery module 20.

[0082] The electronic control unit 43 can monitor the operation of the battery module 20 through the first sampling harness 71 and the circuit board module 30, such as monitoring the temperature, current or voltage of the battery module 20.

[0083] In some embodiments, the battery management module includes a battery disconnect unit 41, and the electronic control unit 43 communicates with the battery disconnect unit 41 to transmit signals to the battery disconnect unit 41. Specifically, when the electronic control unit 43 detects an abnormality in the battery module 20, the battery disconnect unit 41 can promptly cut off the power supply to the external battery device 1.

[0084] In some examples, such as Figure 5 , Figure 8 As shown, the circuit board module 30 includes a first sampling unit 311 and a second sampling unit 312. The first sampling unit 311 is a nickel sheet and is electrically connected to the battery module 20 to monitor the voltage on the battery module 20. The second sampling unit 312 is a thermistor and can monitor the temperature on the battery module 20.

[0085] In some examples, such as Figure 3 , Figure 4 As shown, the battery device 1 is also provided with an insulating component 93, which is located between the sampling part and the housing 10 to insulate and separate the sampling part and the housing 10.

[0086] Among them, the insulating component 93 can be a mica board.

[0087] In some examples, such as Figure 8 As shown, the circuit board module 30 is provided with a plug-in terminal 321. The plug-in terminal 321 is electrically connected to the first sampling unit 311 and the second sampling unit 312 through the circuit in the circuit board module 30. The electronic control unit 43 is electrically connected to the plug-in terminal 321 through the first sampling harness 71, thereby realizing the electrical connection between the electronic control unit 43 and the first sampling unit 311 and the second sampling unit 312.

[0088] Furthermore, when the circuit board module 30 includes multiple separate circuit boards 32, each separate circuit board 32 is provided with a first sampling part 311, a second sampling part 312 and a plug-in terminal 321, and the electronic control unit 43 is electrically connected to the plug-in terminal 321 on each separate circuit board 32 through the first sampling harness 71.

[0089] In some examples, such as Figure 9 As shown, the insulating support 60 is provided with a first fixing part 63, and the circuit board module 30 is provided with a first avoidance area 303 for avoiding the first fixing part 63. The first fixing part 63 cooperates with the electronic control unit 43 through the first avoidance area 303 to fix the electronic control unit 43 on the insulating support 60.

[0090] In some embodiments, the first fixing part 63 is a screw seat, which is adapted to cooperate with the electronic control unit 43 through the first clearance area 303, and the screw is adapted to pass through the electronic control unit 43 and the screw seat to cooperate, so as to achieve a fixed connection between the electronic control unit 43 and the screw seat.

[0091] In some specific embodiments of the present invention, such as Figure 2 , Figure 9 As shown, the battery device 1 also includes a first wiring harness fixing part 81, a second fixing part 64 is provided on the insulating support member 60, and a second avoidance area 304 is provided on the circuit board module 30 for avoiding the second fixing part 64. The first wiring harness fixing part 81 is adapted to cooperate with the second fixing part 64 through the second avoidance area 304. The first wiring harness fixing part 81 cooperates with the sampling wiring harness to limit the position of the sampling wiring harness, so as to reduce the possibility of the components inside the battery device 1 getting caught on the sampling wiring harness.

[0092] In some examples, the second fixing part 64 is a second groove, and an adhesive is provided in the second groove. The first wire harness fixing part 81 is glued to the insulating support 60 by the adhesive. The first wire harness fixing part 81 is exposed to the circuit board module 30 through the first clearance area 303, so as to limit the sampling wire harness located on the side of the circuit board module 30 facing away from the battery module 20.

[0093] In some alternative embodiments of the present invention, such as Figure 2 As shown, the sampling harness includes a second sampling harness 72, and the battery management module includes a battery intelligent control system 44. The battery intelligent control system 44 is electrically connected to the circuit board module 30 through the second sampling harness 72.

[0094] Specifically, the battery intelligent control system 44 combines real-time monitoring of the battery module 20, AI algorithms, adaptive control, and cloud collaboration to achieve intelligent management of the entire life cycle of the battery device 1, thereby improving safety, extending lifespan, and optimizing performance.

[0095] The battery intelligent control system 44 can monitor the operation of the battery module 20 through the second sampling harness 72 and the circuit board module 30, such as monitoring the temperature, current, or voltage of the battery module 20. Simultaneously, it can transmit signals to the battery circuit breaker unit 41 so that when an abnormality occurs in the battery module 20, the battery circuit breaker unit 41 can promptly cut off the external power supply to the battery device 1.

[0096] In some specific embodiments of the present invention, the battery device 1 further includes a magnetically shielded fixing bracket 55, which is connected to the inner wall of the housing 10. At least part of the battery intelligent control system 44 is disposed on the fixing bracket 55 so as to limit the position of the battery intelligent control system 44 by means of the fixing bracket 55.

[0097] At least part of the battery intelligent control system 44 is located on the side of the fixed bracket 55 away from the battery module 20. The fixed bracket 55 can separate the battery intelligent control system 44 and the battery module 20 to avoid the magnetic field generated by the battery module 20 from affecting the transmission of electrical signals in the battery intelligent control system 44.

[0098] In some embodiments, such as Figure 11 As shown, the housing 10 includes a first housing portion 101, a second housing portion 102, and a crossbeam 15. The first housing portion 101 and the second housing portion 102 enclose a receiving cavity 11. The crossbeam 15 is disposed in the receiving cavity 11. The battery module 20 is disposed on one side of the crossbeam 15. The fixing bracket 55 is connected to the crossbeam 15.

[0099] Specifically, the fixing bracket 55 is located on the side of the battery module 20 and between the battery module 20 and the battery intelligent control system 44, so as to separate the battery module 20 and the battery intelligent control system 44 and prevent the magnetic field generated by the battery module 20 from interfering with the transmission of electrical signals in the battery intelligent control system 44.

[0100] In some embodiments, the fixing bracket 55 is made of aluminum to separate the magnetic field generated by the battery module 20 from the battery intelligent control system 44, so as to prevent the magnetic field generated by the battery module 20 from interfering with the transmission of electrical signals in the battery intelligent control system 44.

[0101] In some embodiments, such as Figure 13 , Figure 14 As shown, the fixed bracket 55 is provided with a second wire harness fixing part 82, which cooperates with the second sampling wire harness 72 to limit the position of the second sampling wire harness 72, so as to make the arrangement of the second sampling wire harness 72 neat.

[0102] In some examples, the bottom of the fixed bracket 55 is fixed to the upper end of the crossbeam 15 by bolts, and the battery intelligent control system 44 is fixed to the fixed bracket 55 by bolts. The fixed bracket 55 has a slot for engaging and fixing with the second wiring harness fixing part 82. The second wiring harness fixing part 82 can limit the position of the second sampling wiring harness 72, which facilitates the wiring harness arrangement of the second sampling wiring harness 72.

[0103] In some specific embodiments of the present invention, such as Figure 3 , Figure 5 and Figure 9As shown, the battery device 1 also includes a temperature sampling harness 73, which is electrically connected to the battery management module. The temperature sampling harness 73 is located on the side of the circuit board module 30 facing away from the battery module 20, so as to use the circuit board module 30 to separate the temperature sampling harness 73 and the battery module 20, and to prevent the magnetic field generated by the battery module 20 from affecting the transmission of electrical signals in the temperature sampling harness 73.

[0104] In some embodiments, the insulating support 60 is provided with a sampling area 67, the circuit board module 30 has a clearance port 305, and the sampling harness includes a temperature sampling harness 73. The temperature sampling end of the temperature sampling harness 73 is fixed to the sampling area 67 through the clearance port 305 so as to collect the temperature on the insulating support 60 and thereby monitor the temperature on the battery module 20.

[0105] Specifically, the insulating support 60 is glued to the battery module 20 by the thermally conductive adhesive layer 91. The heat generated by the battery module 20 can be transferred to the insulating support 60 through the thermally conductive adhesive layer 91, thereby enabling the battery management module to monitor the temperature of the battery module 20 through the temperature sampling harness 73.

[0106] In some examples, such as Figure 9 As shown, the sampling area 67 is a first groove. The temperature sampling end of the temperature sampling harness 73 extends into the first groove through the clearance opening 305, so that the position of the temperature sampling end can be limited by the side wall of the first groove, thereby stably fixing the temperature sampling end in the sampling area 67.

[0107] In some specific embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 9 As shown, the battery module 20 includes multiple battery components 21. Two adjacent battery components 21 are electrically connected through an electrical connection part. The insulating support 60 is provided with a potting port 68, through which the electrical connection part and the positive and negative terminals of the battery module 20 pass.

[0108] Specifically, after the positive and negative terminals of the electrical connection part and the battery module 20 are located at the potting port 68, the potting port 68 is potted. Since the current at the positive and negative terminals of the electrical connection part and the battery module 20 is a high voltage current, after the potting treatment, the insulating glue can wrap the positive and negative terminals of the electrical connection part and the battery module 20 to provide insulation protection for the positive and negative terminals of the electrical connection part and the battery module 20.

[0109] In some embodiments, the positive and negative terminals of the battery module 20 are electrically connected to the battery disconnection unit 41 of the battery management module through the conductive element 51. The positive and negative terminals of the battery module 20 can extend towards the conductive element 51 through the potting port 68 so as to realize the electrical connection between the battery module 20 and the battery disconnection unit 41 by using the conductive element 51.

[0110] In some embodiments of the present invention, the circuit board module 30 is provided with a sampling section that cooperates with the battery module 20. The sampling section is used to sample the operating status of the battery module 20, such as the temperature, voltage, current and other conditions of the battery module 20 during operation.

[0111] The battery management module is electrically connected to the circuit board module 30 so that it can transmit the operating status of the battery module 20 collected by the circuit board module 30 to the battery management module. For example, it can transmit the temperature, voltage, current and other information of the battery module 20 collected by the circuit board module 30 during operation to the battery management module so that when the temperature, voltage or current of the battery module 20 exceeds the safe range, the battery management module can disconnect the power supply of the battery module 20 in time, thereby improving the safety of the battery device 1.

[0112] In some alternative embodiments of the present invention, such as Figure 5 , Figure 8 As shown, the circuit board module 30 includes multiple split circuit boards 32, which are arranged along the length of the battery module 20. Each split circuit board 32 is provided with a sampling section, and the battery management module is electrically connected to each split circuit board 32.

[0113] Compared to setting up a single circuit board, using multiple separate circuit boards 32 to form a circuit board module 30 makes the manufacturing of the circuit board module 30 simpler, thereby reducing production difficulty and production costs.

[0114] In some embodiments of the present invention, such as Figure 2 As shown, the battery management module includes a battery circuit breaker unit 41, which is electrically connected to the positive and negative terminals of the battery module 20 via a conductive element 51.

[0115] In particular, when the battery device 1 malfunctions, such as overcurrent, short circuit, insulation abnormality, or thermal runaway, the power supply to the external environment of the battery device 1 is disconnected to prevent the battery device 1 from continuing to supply power when it malfunctions, thereby improving the safety of the battery device 1.

[0116] In some embodiments, such as Figure 2 , Figure 3 As shown, each conductive component 51 includes a first conductive part 511 and a second conductive part 512. One of the first conductive part 511 and the second conductive part 512 is connected to the positive terminal of the battery module 20 and the battery disconnection unit 41, and the other of the first conductive part 511 and the second conductive part 512 is connected to the negative terminal of the battery module 20 and the battery disconnection unit 41.

[0117] In some alternative embodiments of the present invention, such as Figure 2 , Figure 3 As shown, the battery device 1 also includes a magnetic shielding component 52, which is disposed between the conductive component 51 and the circuit board module 30 to isolate the conductive component 51 from the circuits within the circuit board module 30. This prevents the magnetic field generated by the conductive component 51 from affecting the circuits within the circuit board module 30, thus ensuring signal integrity within the circuit board module 30 and improving system efficiency.

[0118] In some embodiments, the conductive element 51 is a copper busbar, and the current on the conductive element 51 is a high-voltage current. The magnetic shielding element 52 is used to separate the conductive element 51 from the circuit board module 30 to prevent the strong magnetic field generated by the high-voltage current on the conductive element 51 from affecting the circuit inside the circuit board module 30. This helps to ensure the signal integrity inside the circuit board module 30 and improve system efficiency.

[0119] In some specific embodiments of the present invention, the magnetic shielding component 52 includes a metal plate and an insulating layer located on the surface of the metal plate. The metal plate is disposed on the circuit board module 30. At least an insulating layer is provided between the conductive component 51 and the metal plate to ensure an insulating fit between the conductive component 51 and the magnetic shielding component 52, thereby preventing the current on the conductive component 51 from flowing to the metal plate of the magnetic shielding component 52.

[0120] In some embodiments, the metal plate is entirely covered with an insulating layer so that the outer surface of the magnetic shielding component 52 is an insulating component 93, which prevents the magnetic shielding component 52 from being electrically connected to the circuit board module 30 and the conductive component 51, thereby preventing short circuits in the current within the battery device 1 and improving the safety of the battery device 1.

[0121] In some examples, the metal plate is made of stainless steel, and a PET film is hot-pressed onto the outer surface of the metal plate. The PET film forms an insulating layer, making the metal plate stainless steel. This makes the magnetic shielding component 52 insulating, so that when the conductive component 51 is placed on the magnetic shielding component 52, the magnetic shielding component 52 can be used to separate the conductive component 51 from the circuit board module 30, preventing the magnetic field generated by the conductive component 51 from affecting the circuit in the circuit board module 30.

[0122] In some optional embodiments of the present invention, the magnetic shielding component 52 is glued to the circuit board module 30 to fix the magnetic shielding component 52 on the circuit board module 30, and the conductive component 51 is glued to the magnetic shielding component 52 to fix the conductive component 51 on the magnetic shielding component 52. In this way, the magnetic shielding component 52 and the conductive component 51 are fixed together, which can prevent the conductive component 51 and the magnetic shielding component 52 from moving relative to each other, and make it easier for the magnetic shielding component 52 to be stably located between the circuit board module 30 and the conductive component 51, so as to separate the conductive component 51 and the circuit board module 30.

[0123] In some alternative embodiments of the present invention, such as Figure 2 , Figure 10As shown, the battery circuit breaker unit 41 includes a housing 53, and the battery circuit breaker unit 41 is disposed inside the housing 53. The housing 53 is defined as a magnetically shielded housing 53 that can be magnetically shielded, so as to separate the battery circuit breaker unit 41 from the external structure.

[0124] Specifically, the battery circuit breaker unit 41 includes multiple high-voltage conductive parts in order to transmit current. The magnetic shielding box 53 can be used to separate the high-voltage conductive parts inside the battery circuit breaker unit 41 from the low-voltage conductive parts outside the box 53, so as to prevent the strong magnetic field generated by the high-voltage conductive parts from affecting the transmission of electrical signals in the low-voltage conductive parts.

[0125] In some specific embodiments of the present invention, such as Figure 10 As shown, the housing 53 includes a metal part 531 and an insulating outer layer 532 covering the metal part 531, so as to use the metal part 531 to separate the high-voltage conductive part inside the battery circuit breaker unit 41 from the low-voltage conductive part in the external environment, so as to avoid the strong magnetic field generated by the high-voltage conductive part from affecting the transmission of electrical signals in the low-voltage conductive part.

[0126] Specifically, one end of the conductive element 51 is electrically connected to the battery circuit breaker unit 41, and the other end is electrically connected to the positive and negative terminals of the battery module 20. In other words, at least a portion of the conductive element 51 needs to extend into the housing 53, and an insulating outer layer 532 is covered on the metal element 531 to ensure an insulating fit between the housing 53 and the conductive element 51, preventing the current on the conductive element 51 from flowing to the housing 53.

[0127] In some embodiments, such as Figure 10 As shown, the housing 53 includes three layers: two insulating outer layers 532 and a metal component 531. The metal component 531 is located between the two insulating outer layers 532. The metal component 531 and the insulating outer layers 53 are formed by injection molding or compression molding so that the two insulating outer layers 532 can completely cover the metal component 531, thereby achieving insulation between the housing 53 and the conductive component 51 and preventing electrical connection between the housing 53 and the conductive component 51.

[0128] In some alternative embodiments of the present invention, such as Figure 4 , Figure 9 As shown, an insulating support 60 is provided between the battery module 20 and the circuit board module 30. The battery circuit breaker unit 41 is fixed to the insulating support 60. The circuit board module 30 is provided with a third avoidance area 301 for avoiding the battery circuit breaker unit 41, so as to use the insulating support 60 to fix the battery circuit breaker unit 41, thereby fixing the position of the insulating support 60 in the receiving cavity 11.

[0129] In some specific embodiments of the present invention, such as Figure 5 , Figure 9As shown, the insulating support 60 is provided with a third fixing part, which cooperates with the battery circuit breaker unit 41 through the third clearance area 301, so as to fix the battery circuit breaker unit 41 and the insulating support 60 by using the first fixing part.

[0130] In some embodiments, the third fixing part is an adhesive layer. An adhesive layer is provided on the insulating support member 60. The position of the adhesive layer corresponds to the position of the third clearance area 301. The battery circuit breaker unit 41 is adapted to be fixed to the insulating support member 60 by adhesive layer.

[0131] In some embodiments, such as Figure 2 , Figure 9 As shown, the third fixing part includes a fixing seat 69, and the battery circuit breaker unit 41 includes a housing 53. The fixing seat 69 cooperates with the housing 53 through the third clearance area 301 to fix the housing 53 on the insulating support member 60, thereby fixing the battery circuit breaker unit 41 on the insulating support member 60.

[0132] In some specific embodiments of the present invention, such as Figure 6 , Figure 9 As shown, the insulating support 60 has a positioning part 66, and the magnetic shielding part 52 has a positioning mating part 521. The positioning part 66 passes through the circuit board module 30 and engages with the positioning mating part 521 to position the magnetic shielding part 52 on the insulating support 60, thereby facilitating the accurate fixing of the magnetic shielding part 52 on the insulating support 60. The magnetic shielding part 52 is used to separate the conductive part 51 and the circuit board module 30.

[0133] In some embodiments, such as Figure 6 , Figure 9 As shown, the positioning part 66 is a positioning protrusion and the positioning mating part 521 is a positioning groove. When the magnetic shielding member 52 is fixed on the insulating support member 60, the positioning protrusion is adapted to extend into the positioning groove to position the relative position of the magnetic shielding member 52 and the insulating support member 60, so that the magnetic shielding member 52 can be accurately fixed on the insulating support member 60.

[0134] In some optional embodiments of the present invention, the battery device 1 further includes an external terminal 42, which is located on the side of the circuit board module 30 away from the battery module 20. There are at least two conductive elements 51. The battery circuit breaker unit 41 is electrically connected to the external terminal 42 through another conductive element 51, so that the current at the battery module 20 can be transmitted to the external terminal 42 through the conductive element 51 by the battery circuit breaker unit 41. An external electrical device is adapted to cooperate with the external terminal 42, thereby realizing the electrical connection between the battery device 1 and the external electrical device, so that the battery device 1 can supply power to the outside through the external terminal 42.

[0135] Among them, there are at least two magnetic shielding components 52, which are arranged corresponding to the conductive component 51. The magnetic shielding components 52 are used to separate the conductive component 51 from the circuit in the circuit board module 30, so as to prevent the magnetic field generated by the conductive component 51 from affecting the circuit in the circuit board module 30. This helps to ensure the signal integrity in the circuit board module 30 and improve system efficiency.

[0136] Specifically, there are at least two conductive elements 51. One conductive element 51 is electrically connected to the positive and negative terminals of the battery module 20 and the battery circuit breaker unit 41, and the other conductive element 51 is electrically connected to the battery circuit breaker unit 41 and the external terminal 42. A magnetic shielding element 52 is provided between each conductive element 51 and the circuit board module 30 to fully isolate the conductive element 51 from the circuit within the circuit board module 30.

[0137] In some alternative embodiments of the present invention, such as Figure 1 , Figure 2 As shown, the housing 10 has a clearance opening 12, through which some external terminals 42 protrude from the housing 10, so as to facilitate the electrical connection between external electrical devices and external terminals 42, thereby enabling external electrical devices to be electrically connected to the battery management module.

[0138] In some specific embodiments of the present invention, such as Figure 1 , Figure 4 and Figure 9 As shown, an insulating support 60 is provided between the battery module 20 and the circuit board module 30, and the external terminal 42 is fixed to the insulating support 60 so as to fix the position of the external terminal 42 by means of the insulating support 60.

[0139] Furthermore, such as Figure 5 , Figure 9 As shown, the insulating support 60 is provided with a fourth fixing part 62, and the circuit board module 30 is provided with a fourth clearance area 302 for avoiding the fourth fixing part 62. The fourth fixing part 62 cooperates with the external terminal 42 through the fourth clearance area 302 so as to fix the external terminal 42 on the insulating support 60 by means of the fourth fixing part 62.

[0140] like Figure 9 As shown, in this embodiment, the fourth fixing part 62 is a screw seat, and the screw is adapted to be fixedly engaged with the external terminal 42 and the screw seat to fix the external terminal 42 on the insulating support 60.

[0141] It should be explained here that the first avoidance area 303, the second avoidance area 304, the third avoidance area 301 and the fourth avoidance area 302 in the above embodiments can be avoidance areas on the corresponding split circuit board 32, or they can be defined by the gap between two adjacent split circuit boards 32. No further restrictions are imposed here.

[0142] In some embodiments of the present invention, such as Figure 1 As shown, the housing 10 includes a first housing portion 101 and a second housing portion 102, which together define a receiving cavity 11.

[0143] The battery module 20 is bonded to the first housing 101 with thermally conductive structural adhesive, and the battery pack 1 is sealed using a pressure plate and sealing foam.

[0144] In some embodiments, such as Figure 1 As shown, a sealing element 92 is provided between the first shell portion 101 and the second shell portion 102 to seal the gap between the first shell portion 101 and the second shell portion 102, thereby ensuring the airtightness of the receiving cavity 11.

[0145] In some embodiments of the present invention, the battery device 1 may refer to a battery pack or the chassis of a vehicle that includes the battery module 20; no further limitations are imposed here.

[0146] The following describes an electrical device according to an embodiment of the present invention. The electrical device according to an embodiment of the present invention includes a battery device 1 according to the above-described embodiment.

[0147] According to an embodiment of the present invention, the power device utilizes the battery device 1 of the above embodiment of the present invention. By placing both the battery module 20 and the battery management module in the receiving cavity 11, the magnetic field between the battery management module and the battery module 20 is isolated by at least the circuit board module 30, which facilitates the reduction of the volume and mass of the battery device 1 and the reduction of the production cost of the battery device 1.

[0148] The electrical devices mentioned here can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc.

[0149] Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; spacecraft can include airplanes, rockets, space shuttles, and spacecraft; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0150] In some embodiments, the electrical device is a vehicle, which may be a pure electric vehicle or a hybrid vehicle.

[0151] Other configurations and operations of the electrical device according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0152] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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 the invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them.

[0153] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0154] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0155] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0156] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: A housing (10) defining a receiving cavity (11); A battery module (20) is disposed in the receiving cavity (11); Circuit board module (30), the circuit board module (30) is disposed in the receiving cavity (11), and the circuit board module (30) is electrically connected to the battery module (20); A battery management module is disposed in the receiving cavity (11), the battery management module is electrically connected to the battery module (20), and at least part of the battery management module and the battery module (20) are provided with the circuit board module (30).

2. The battery device according to claim 1, characterized in that, The battery management module is electrically connected to the circuit board module (30) via a sampling harness, which is located on the side of the circuit board module (30) facing away from the battery module (20).

3. The battery device according to claim 2, characterized in that, It also includes an insulating support (60) disposed between the battery module (20) and the circuit board module (30).

4. The battery device according to claim 3, characterized in that, The sampling harness includes a first sampling harness (71), the battery management module includes an electronic control unit (43), the electronic control unit (43) is fixed to the insulating support (60), and the electronic control unit (43) is electrically connected to the circuit board module (30) through the first sampling harness (71).

5. The battery device according to claim 4, characterized in that, The insulating support (60) is provided with a first fixing part (63), and the circuit board module (30) is provided with a first avoidance area (303) for avoiding the first fixing part (63). The first fixing part (63) cooperates with the electronic control unit (43) through the first avoidance area (303).

6. The battery device according to claim 3, characterized in that, It also includes a first wire harness fixing part (81), a second fixing part (64) is provided on the insulating support member (60), and the circuit board module (30) is provided with a second avoidance area (304) for avoiding the second fixing part (64). The first wire harness fixing part (81) is adapted to cooperate with the second fixing part (64) through the second avoidance area (304), and the first wire harness fixing part (81) cooperates with the sampling wire harness.

7. The battery device according to claim 2, characterized in that, The sampling harness includes a second sampling harness (72), and the battery management module includes a battery intelligent control system (44). The battery intelligent control system (44) is electrically connected to the circuit board module (30) through the second sampling harness (72).

8. The battery device according to claim 7, characterized in that, It also includes a magnetically shielded mounting bracket (55) connected to the inner wall of the housing (10), and at least part of the battery intelligent control system (44) is located on the side of the mounting bracket (55) away from the battery module (20).

9. The battery device according to claim 8, characterized in that, The fixed bracket (55) is provided with a second wire harness fixing part (82), which cooperates with the second sampling wire harness (72).

10. The battery device according to claim 8, characterized in that, The housing (10) includes a first housing portion (101), a second housing portion (102), and a crossbeam (15). The first housing portion (101) and the second housing portion (102) enclose the receiving cavity (11). The crossbeam (15) is disposed in the receiving cavity (11). The battery module (20) is disposed on one side of the crossbeam (15). The fixing bracket (55) is connected to the crossbeam (15).

11. The battery device according to claim 3, characterized in that, It also includes a temperature sampling harness (73) electrically connected to the battery management module, the temperature sampling harness (73) being located on the side of the circuit board module (30) facing away from the battery module (20).

12. The battery device according to claim 11, characterized in that, The insulating support (60) is provided with a sampling area (67), the circuit board module (30) has a clearance opening (305), and the temperature sampling end of the temperature sampling harness (73) is fixed to the sampling area (67) through the clearance opening (305).

13. The battery device according to claim 3, characterized in that, The battery module (20) includes multiple battery components (21), and two adjacent battery components (21) are electrically connected through an electrical connection. The insulating support (60) is provided with a potting port (68), and the positive and negative terminals of the electrical connection and the battery module (20) correspond to the potting port (68).

14. The battery device according to any one of claims 1-13, characterized in that, The circuit board module (30) is provided with a sampling unit that cooperates with the battery module (20), and the sampling unit is used to sample the operating status of the battery module (20).

15. The battery device according to claim 14, characterized in that, The circuit board module (30) includes multiple split circuit boards (32), which are arranged along the length of the battery module (20). Each split circuit board (32) is provided with the sampling part, and the battery management module is electrically connected to each split circuit board (32).

16. The battery device according to any one of claims 1-13, characterized in that, The battery management module includes a battery circuit breaker unit (41), which is electrically connected to the positive and negative terminals of the battery module (20) through a conductive element (51).

17. The battery device according to claim 16, characterized in that, It also includes a magnetic shielding component (52), which is disposed between the conductive component (51) and the circuit board module (30).

18. The battery device according to claim 17, characterized in that, The magnetic shielding component (52) includes a metal plate and an insulating layer located on the surface of the metal plate. The metal plate is disposed on the circuit board module (30), and the insulating layer is provided between at least the conductive component (51) and the metal plate.

19. The battery device according to claim 17, characterized in that, The magnetic shielding component (52) is glued to the circuit board module (30), and the conductive component (51) is glued to the magnetic shielding component (52).

20. The battery device according to claim 17, characterized in that, The battery circuit breaker unit (41) includes a housing (53), which is defined as a magnetically shielded housing.

21. The battery device according to claim 20, characterized in that, The housing (53) includes a metal component (531) and an insulating outer layer (532) covering the metal component (531).

22. The battery device according to claim 17, characterized in that, An insulating support (60) is provided between the battery module (20) and the circuit board module (30), the battery circuit breaker unit (41) is fixed to the insulating support (60), and the circuit board module (30) is provided with a third avoidance area (301) for avoiding the battery circuit breaker unit (41).

23. The battery device according to claim 22, characterized in that, The insulating support (60) is provided with a third fixing part, which cooperates with the battery circuit breaker unit (41) through the third clearance area (301).

24. The battery device according to claim 22, characterized in that, The insulating support (60) has a positioning part (66), and the magnetic shielding member (52) has a positioning mating part (521). The positioning part (66) passes through the circuit board module (30) and mates with the positioning mating part (521).

25. The battery device according to claim 17, characterized in that, It also includes an external terminal (42), which is located on the side of the circuit board module (30) away from the battery module (20). There are at least two conductive elements (51). The battery circuit breaker unit (41) is electrically connected to the external terminal (42) through another conductive element (51). There are at least two magnetic shielding elements (52) and they are arranged corresponding to the conductive elements (51).

26. The battery device according to claim 25, characterized in that, The housing (10) has a clearance opening (12) through which a portion of the external terminals (42) protrude from the housing (10).

27. The battery device according to claim 25, characterized in that, An insulating support (60) is provided between the battery module (20) and the circuit board module (30). The external terminal (42) is fixed to the insulating support (60). A fourth fixing part (62) is provided on the insulating support (60). The circuit board module (30) is provided with a fourth avoidance area (302) for avoiding the fourth fixing part (62). The fourth fixing part (62) cooperates with the external terminal (42) through the fourth avoidance area (302).

28. An electrical appliance, characterized in that, The battery device includes any one of claims 1-27.

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