Battery device and electric appliance

Abstract

A battery device and an electric appliance, the battery device comprising a tray, a battery pack arranged in the tray, and a battery information collector, a gap being provided between a frame of the tray and an end plate of the battery pack, the battery information collector being capable of being inserted into the gap in a first direction and connected to the end plate and / or the frame. In the battery device provided by the present disclosure, the tray is inverted and connected to the end plate, the battery pack is stably installed in the tray, a gap is left between the end plate and the frame, the battery information collector is finally inserted into the gap and fixed to the end plate or the frame, or fixed to both of them, the fixed installation of the battery information collector is achieved, and the problem that the battery information collector cannot be installed after the tray is inverted is effectively solved.

Description

Technical Field

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

[0002] In new energy vehicles, high-frame trays are typically used to improve the safety performance of the battery system and avoid cell leakage caused by high-intensity vibration. However, when installed upside down, high-frame trays can interfere with the BIC (Battery Information Controller), which is not conducive to centralized sampling by the FPC (Flexible Printed Circuit). Utility Model Content

[0003] The purpose of this disclosure is to provide a battery device and power supply to address the problem that high-bezel trays are not conducive to centralized sampling of FPCs.

[0004] To achieve the above objectives, this disclosure provides a battery device including a tray, a battery pack disposed within the tray, and a battery information collector. A gap exists between the frame of the tray and the end plate of the battery pack. The battery information collector is capable of being inserted into the gap along a first direction and connected to the end plate and / or the frame.

[0005] Optionally, the battery device further includes a bracket, on which the battery information collector is mounted, and the bracket is capable of being inserted into the gap along a first direction and connected to the end plate.

[0006] Optionally, the bracket includes a bracket body and a mounting part, the bracket body is located within the gap, and the battery information collector is installed on the bracket body; the mounting part is located on one side of the end plate along the first direction and is connected to the end plate.

[0007] Optionally, the battery device further includes a communication converter disposed on the support body, and the communication converter is connected to the battery information collector.

[0008] Optionally, the bracket body includes a first mounting plate and a second mounting plate connected together, the battery information collector is connected to the first mounting plate, and the communication converter is connected to the second mounting plate.

[0009] Optionally, a connecting beam is connected to the end plate, and the connecting beam is connected to the tray by a locking member.

[0010] Optionally, the connecting beam is provided with a connecting hole extending along the first direction, and the locking member passes through the connecting hole to connect the connecting beam and the tray.

[0011] Optionally, the battery pack includes multiple individual battery cells arranged along the second direction. The end plate is disposed outside the outermost individual battery cell. Adjacent individual battery cells are connected by connecting pieces. The battery pack also includes a flexible circuit board connected to the multiple connecting pieces. The battery device also includes a low-voltage sampling harness connecting the flexible circuit board and the battery information collector to centrally transmit information from the multiple individual battery cells to the battery information collector through the multiple connecting pieces, the flexible circuit board, and the low-voltage sampling harness. The first direction and the second direction intersect.

[0012] Optionally, the flexible circuit board has a bent section that bends to the side of the end plate away from the individual battery cell, and the bent section is provided with a connector. The low-voltage sampling harness includes a first connector terminal connected to the connector and a second connector terminal connected to the battery information collector.

[0013] Optionally, the bent section is connected to the end plate.

[0014] Optionally, multiple connecting pieces and flexible circuit boards are respectively provided on both sides of the multiple battery cells along a third direction. The battery information collector is located between the two bending sections. The low-voltage sampling harness includes two first plug terminals. The two first plug terminals are respectively connected to the connectors on the two bending sections. The first direction, the second direction and the third direction intersect each other.

[0015] Optionally, the tray is provided with a low-voltage output connector, and the battery information collector is connected to the low-voltage output connector.

[0016] Optionally, the tray contains multiple battery packs, which are respectively connected to high voltage and low voltage.

[0017] Optionally, the tray is provided with a positive terminal connector and a negative terminal connector. The plurality of battery packs include a first battery pack located at both ends and at least one second battery pack located between two first battery packs. The first battery packs and the second battery packs are connected by a first jumper. The positive terminal connector is connected to the first battery pack at one end through a positive terminal connector, and the negative terminal connector is connected to the first battery pack at the other end through a negative terminal connector.

[0018] Optionally, there are multiple second battery packs, and each pair of adjacent second battery packs is provided with a second jumper. A circuit breaker is provided on the tray at a position corresponding to the second jumper, and the circuit breaker is connected to the second jumper.

[0019] Optionally, the tray includes a frame and a cold plate fixed to the bottom surface of the frame, the frame and the cold plate being used to enclose and form a receiving cavity for accommodating the battery pack.

[0020] Optionally, there are multiple trays arranged in a stacked manner along the first direction, and the cold plate of the upper tray is sealed to the frame of the lower tray.

[0021] Optionally, the top surface of the uppermost tray is provided with a sealing cover, which is sealed to the edge of the uppermost tray.

[0022] Optionally, the battery device further includes an explosion-proof valve, and the frame has an exhaust channel that connects the receiving cavity and the explosion-proof valve.

[0023] According to a second aspect of this disclosure, an electrical device is provided, including the battery device described in the above embodiments.

[0024] Through the above technical solution, in the battery device provided in this disclosure, by inverting the tray and connecting it to the end plate, the battery pack can be stably installed inside the tray, and a gap is left between the end plate and the frame. Finally, the battery information collector is inserted into the gap and connected to the end plate or the frame, or both, to achieve fixed installation of the battery information collector and effectively solve the problem that the battery information collector cannot be installed in the battery pack after the tray is inverted.

[0025] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of a battery pack in a battery device provided in an exemplary embodiment of this disclosure.

[0028] Figure 2 yes Figure 1 A magnified view of the middle plate area.

[0029] Figure 3 This is a schematic diagram of the structure of a battery pack in a battery device provided in an exemplary embodiment of this disclosure.

[0030] Figure 4 This is an exploded view of a battery device provided in an exemplary embodiment of this disclosure.

[0031] Figure 5This is a schematic diagram of the structure of a battery device provided in an exemplary embodiment of this disclosure.

[0032] Explanation of reference numerals in the attached figures

[0033] 1-Battery pack; 10-Battery group; 100-Single cell; 101-End plate; 102-Battery information collector; 1021-Communication converter; 103-Bracket; 1030-Bracket body; 1031-Hanging part; 10301-First mounting plate; 10302-Second mounting plate; 104-Connecting piece; 105-Flexible circuit board; 1051-Bending section; 106-Connector; 107-Low voltage sampling harness; 1071-First connector terminal; 1072-Second connector terminal; 108-Connecting beam; 1080-Connecting hole; 11-Tray; 110 - Frame; 1100- Receiving cavity; 111- Inlet; 112- Outlet; 113- Exhaust channel; 12- Cold plate; 13- Seal; 141- Positive connector; 142- Positive connection bar; 143- Lead-out connector; 144- First jumper; 145- Second jumper; 146- Circuit breaker; 147- Negative connection bar; 148- Negative connector; 150- Low-voltage output connector; 16- Explosion-proof valve; 17- Positioning pin; 18- Fastener; 2- Sealing cover; 1000- Gap; 1001- First battery pack; 1002- Second battery pack. Detailed Implementation

[0034] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0035] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" generally refer to the battery device provided in this disclosure under normal installation conditions. "First direction" can be the vertical direction; "second direction" can be the stacking direction of multiple individual battery cells or the width direction of the battery device; "third direction" can be the arrangement direction of multiple battery packs or the length direction of the battery device. For details, please refer to [reference needed]. Figure 1 and Figure 3 The direction indicated by the middle arrow. "Inner" and "outer" refer to the inner and outer contours of the corresponding components. The use of terms such as "first," "second," etc., is intended to distinguish different components and does not imply sequence or importance. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0036] like Figure 1 and Figure 3As shown, when assembling the battery pack 10 or battery stack 1, multiple individual cells 100 are stacked and fixed with end plate 101 to form a single cell module. The bottom surface of the cell module is in contact with the cold plate 12. The frame 110 of the tray 11 is upside down and installed on the cold plate 12 and welded to the cold plate 12. At this time, the battery information collector 102 installed on the outside of the end plate 101 will interfere with the tray 11, which is not conducive to FPC centralized sampling.

[0037] To solve the above problems, according to the first aspect of this disclosure, such as Figure 1 and Figure 3 As shown, a battery device is provided, which includes a tray 11, a battery pack 10 disposed in the tray 11, and a battery information collector 102. After the frame 110 of the tray 11 is installed upside down, there is a gap 1000 between the frame 110 and the end plate 101 of the battery pack 10. The battery information collector 102 can be inserted into the gap 1000 along a first direction and connected to the end plate 101 and / or the frame 110.

[0038] The "first direction" here can be along the vertical direction, or it can be an angled insertion that forms a certain angle with the vertical direction, as long as the battery information collector 102 can be inserted into the narrow gap 1000. After being inserted into the gap 1000, the battery information collector 102 can be connected to the end plate 101, the frame 110, or both. The following description will focus on its connection to the end plate 101. The battery information collector 102 can be directly connected to the end plate 101. For example, the outer shell of the battery information collector 102 can have a connecting part, through which the battery information collector 102 can be directly connected to the end plate 101. For example, the connecting part can be a through hole extending in the first direction, through which a fastener passes to fix the battery information collector 102 to the end plate 101; the connecting part can also be one of a slide rail or a slide groove, with the end plate 101 having the other of a slide rail or slide groove, so that the battery information collector 102 can be fixed after sliding into the gap 1000 in the first direction; the connecting part can also be one of a buckle or a buckle slot, with the end plate 101 having the other of a buckle or a buckle slot, so that the battery information collector 102 can be fixed by snapping. Of course, the battery information collector 102 can also be indirectly connected to the end plate 101, for example, by mounting it on the end plate 101 through the bracket 103 described below, which will be described in detail below in conjunction with the structure of the bracket 103.

[0039] In the battery device provided in this disclosure, by inverting the tray 11 and connecting it to the end plate 101, the battery pack 10 can be stably installed inside the tray. A gap 1000 is left between the end plate 101 and the frame 110. Finally, the battery information collector 102 is inserted into the gap 1000 and connected to the end plate 101 or the frame 110, or both, to achieve the fixed installation of the battery information collector 102. This effectively solves the problem that the battery pack 10 cannot be installed with the battery information collector 102 after the tray 11 is inverted.

[0040] In this embodiment, the tray 11 includes a frame 110 and a cold plate 12 fixed to the bottom surface of the frame 110. The frame 110 can be an integral die-cast high frame tray, which can provide safety protection for the internal battery cell module. The mode can reach 160HZ, which improves the overall mode while ensuring the sealing performance. It can meet the IPX9K waterproof requirements, and the vibration characteristics are controllable. There are significant improvements in extrusion and side impact, and the stability and reliability are high.

[0041] like Figure 3 As shown, the bottom surface of the battery pack 10 is attached to the cold plate 12, and the frame 110 is upside down mounted on the cold plate 12. The bottom surface of the frame 110 and the cold plate 12 are welded and fixed. The tray 11 and the end plate 101 are connected by locking members to fix the battery pack 10 inside the tray 11. Exemplarily, a connecting beam 108 can be fixed on the end plate 101. The connecting beam 108 can be connected to the tray 11 by locking members. In this embodiment, as shown... Figure 2 As shown, the connecting beam 108 has a connecting hole 1080 extending in a first direction. A locking member, such as a bolt, passes through the connecting hole 1080 to connect the connecting beam 108 and the cold plate 12 of the tray 11. In other embodiments, the connecting hole 1080 may also extend in a second direction, and a locking member passes through the connecting hole 1080 to connect the connecting beam 108 and the frame 110 of the tray 11, both of which can stably fix the battery pack 10 inside the tray 11.

[0042] In an embodiment where the battery information collector 102 is indirectly connected to the end plate 101 via a bracket 103, the battery device further includes a bracket 103. The battery information collector 102 is mounted on the bracket 103, and the bracket 103 can be inserted into the gap 1000 along a first direction and connected to the end plate 101. The battery information collector 102 is pre-fixed to the bracket 103 with bolts or rivets. The bracket 103 is then inserted from top to bottom into the gap 1000 between the frame 110 and the end plate 101 to complete the installation of the battery information collector 102.

[0043] There are several ways in which the bracket 103 can be connected to the end plate 101, such as the fastener connection, sliding connection, and snap-fit ​​connection described above. In this disclosure, as... Figure 2As shown, the bracket 103 includes a bracket body 1030 and a mounting part 1031. The battery information collector 102 is installed on the bracket body 1030, and the mounting part 1031 is located on one side of the end plate 101 along the first direction and connected to the end plate 101. In this embodiment, the end plate 101 may have a plug hole, and the lower edge of the bracket body 1030 is provided with a locking tongue that can be inserted into the plug hole. The mounting part 1031 may be provided on the upper edge of the bracket body 1030. The mounting part 1031 has a flange that can be mounted on the top surface of the end plate 101. The flange may have a through hole extending along the first direction. Fasteners pass through the through hole to connect the mounting part 1031 and the end plate 101. Through the cooperation of the two, the bracket 103 is stably and reliably mounted on the side of the end plate 101. There may be multiple mounting parts 1031, which can be designed according to needs. Of course, bolts can also be used to fix the bracket 103, all of which are within the protection scope of this disclosure. In this embodiment, the bracket 103 carrying the battery information collector 102 is hung on the end plate 101 after the insertion gap 1000. By adjusting the assembly method and assembly sequence of the battery information collector 102, the problem of the battery information collector 102 affecting the centralized sampling of the battery pack 10 can be effectively solved.

[0044] In one exemplary embodiment of this disclosure, such as Figure 1 As shown, the battery device also includes a communication converter 1021 mounted on the support body 1030, and the communication converter 1021 is connected to the battery information collector 102. For example, as... Figure 2 As shown, the bracket body 1030 has a first mounting plate 10301 and a second mounting plate 10302 disposed on one side of the first mounting plate 10301. The battery information collector 102 is mounted on the first mounting plate 10301, and the communication converter 1021 is mounted on the second mounting plate 10302. The communication converter 1021 can be signal-connected to the battery information collector 102, and can convert daisy-chain signals to CAN signals for output, improving the stability of sampling and making it suitable for commercial vehicles operating under harsh conditions. The structures of the first mounting plate 10301 and the second mounting plate 10302 can be adapted to the structures of the battery information collector 102 and the communication converter 1021, respectively.

[0045] like Figure 1 As shown, the battery pack 10 includes multiple battery cells 100 arranged along a second direction. An end plate 101 is located outside the outermost battery cell 100. To achieve centralized sampling of multiple battery cells 100, as shown... Figure 1As shown, two adjacent battery cells 100 are connected by a connecting piece 104. The battery pack 10 also includes a flexible circuit board 105 connected to multiple connecting pieces 104. The end plate 101 is provided with a low-voltage sampling harness 107 that connects the flexible circuit board 105 and the battery information collector 102, so as to centrally transmit the information of multiple battery cells 100 to the battery information collector 102 through multiple connecting pieces 104, flexible circuit board 105 and low-voltage sampling harness 107.

[0046] The flexible circuit board 105 is directly attached to one side of multiple battery cells 100. The multiple battery cells 100 are connected by connecting pieces 104 and connected to multiple sampling parts of the flexible circuit board 105 to realize synchronous acquisition of multi-channel signals. The flexible circuit board 105 integrates the voltage, temperature and other signal acquisition functions of multiple battery cells 100, and transmits the signals to the battery information acquisition unit 102 through the low-voltage sampling harness 107, replacing the traditional distributed connection of the harness, reducing the signal transmission path length and reducing the risk of electromagnetic interference.

[0047] In this embodiment, the flexible circuit board 105 has a bent section 1051 that bends to the side of the end plate 101 away from the individual battery cell 100. A connector 106 is provided on the bent section 1051. The low-voltage sampling harness 107 includes a first connector terminal 1071 connected to the connector 106 and a second connector terminal 1072 connected to the battery information collector 102. Thus, information from multiple individual battery cells 100 is sequentially transmitted through multiple connecting pieces 104 and the flexible circuit board 105 to the connector 106, the first connector terminal 1071, and the second connector terminal 1072, and finally centrally transmitted to the battery information collector 102, achieving centralized sampling of multiple individual battery cells 100.

[0048] In this embodiment, as Figure 1 and Figure 2 As shown, the bent section 1051 is connected to the end plate 101. The bent section 1051 can be riveted or bolted to the end plate 101, and then the connector 106 is installed on the bent section 1051.

[0049] In this embodiment, as Figure 1 As shown, multiple battery cells 100 are provided with multiple connecting pieces 104 and flexible circuit boards 105 on both sides along a third direction. The battery information collector 102 is located between two bending sections 1051. The low-voltage sampling harness 107 includes two first plug terminals 1071. The two first plug terminals 1071 are respectively connected to the connectors 106 on the two bending sections 1051. The flexible circuit board 105 is bent to one side of the end plate 101 and connected to the corresponding connector 106 to transmit the acquired signal to the connector 106, and then further transmitted to the battery information collector 102 through the corresponding first plug terminals 1071 to realize FPC centralized sampling.

[0050] like Figure 3 As shown, the tray 11 contains multiple battery packs 10 arranged along a third direction. These battery packs 10 are connected to both high-voltage and low-voltage systems. The high-voltage connections between the battery packs 10 enable electrical connection between the battery pack 1 and external loads or charging equipment, providing power to high-voltage loads, supporting high-power charging and discharging, and meeting the voltage or current requirements of vehicle drive or energy storage systems. The low-voltage connections between the battery packs 10 are primarily used for signal transmission and system control, enabling the transmission of information from the multiple battery packs 10 to the battery management system, allowing for real-time monitoring and decision-making by the battery management system.

[0051] To achieve high-voltage connection between multiple battery packs 10, in this embodiment, as follows: Figure 3 As shown, tray 11 is provided with a positive connector 141 and a negative connector 148. Multiple battery packs 10 include first battery packs 1001 located at both ends and at least one second battery pack 1002 located between the two first battery packs 1001. The first battery packs 1001 and the second battery packs 1002 are connected by a first jumper 144. The positive connector 141 is connected to one end of the first battery pack 1001 via a positive connector 142, and the negative connector 148 is connected to the other end of the first battery pack 1001 via a negative connector 147. The first battery pack 1001 at the left end can be directly connected to the positive connector 141 via the positive connector 142, and the first battery pack 1001 at the right end can be directly connected to the negative connector 148 via the negative connector 147. Of course, a negative terminal connection bar 147 and a lead-out connector 143 can also be provided on the side where the first battery pack 1001 is located. The lead-out connector 143 can be a copper-aluminum busbar. The negative terminal is connected to the negative terminal connector 148 through the lead-out connector 143 and the negative terminal connection bar 147. The first battery pack 1001 and the second battery pack 1002 are connected by a first jumper 144. The first jumper 144 can bridge the aluminum busbar to achieve high-voltage connection of multiple battery packs 10.

[0052] Multiple second battery packs 1002 can be used, with adjacent second battery packs 1002 connected by a second jumper 145. A circuit breaker 146 is located on the tray 11 at a position corresponding to the second jumper 145, and the circuit breaker 146 is connected to the second jumper 145. The second jumper 145 can be an MSD copper-aluminum busbar, and the circuit breaker 146 can be a fuse (600A). Thus, the output of the high-voltage circuit is achieved through the following connection: positive connector 141 - positive copper busbar 142 - first jumper 144 - second jumper 145 - first jumper - lead-out connector 143 - negative copper busbar 147 - negative connector 148. Here, the circuit breaker 146 can be located inside the tray 11, or it can be installed through the frame 110 of the tray 11 as shown in the figure.

[0053] To achieve low-voltage connection between multiple battery packs 10, in this embodiment, as follows: Figure 3 As shown, a low-voltage output connector 150 is provided on the tray 11, and the battery information collector 102 is connected to the low-voltage output connector 150. The sampling signal of the battery pack 10 is led out to the low-voltage output connector 150 through the battery information collector 102 to complete the low-voltage circuit connection.

[0054] like Figure 3 and Figure 4 As shown, the tray 11 includes a frame 110 and a cold plate 12 fixed to the bottom surface of the frame 110. The frame 110 and the cold plate 12 are used to enclose and form a receiving cavity 1100 for accommodating the battery pack 10. The number of battery packs 10 in the receiving cavity 1100 is not limited.

[0055] like Figure 4 and Figure 5 As shown, multiple trays 11 can be stacked sequentially in a vertical direction. The cold plate 12 of the upper tray 11 and the frame 110 of the lower tray 11 are sealed together. A seal 13 can be provided between the top surface of the cold plate 12 of the upper tray 11 and the frame 110 of the lower tray 11. The cold plate 12 can cool down the multiple battery packs 10 inside the tray 11, ensuring the normal operation of the battery packs 10. The tray 11 and the cold plate 12 are friction stir welded to ensure overall sealing. The seal 13 can be sealing foam, and the compression of the sealing foam ensures the sealing performance of each pack.

[0056] The two adjacent trays 11 are detachably connected, and the battery packs are stackable. If any one battery pack malfunctions, it can be directly disassembled and replaced, allowing for easy assembly and replacement, facilitating after-sales maintenance. To achieve the detachable connection between the two adjacent battery packs 1, in this embodiment, as follows... Figure 4 and Figure 5 As shown, the trays 11 of two adjacent battery packs 1 can be precisely positioned by locating pins 17 and connected together by fasteners 18. The locating pins 17 can be located at the four corners of the tray 11, and there can be multiple fasteners 18 arranged at intervals along the circumference, connecting multiple battery packs 1 to form the entire battery system. In other embodiments, multiple stackable battery packs 1 can be connected by adhesive bonding, bolts, or snap-fit, all of which fall within the protection scope of this disclosure.

[0057] The number of trays 11 is unlimited. Correspondingly, the battery pack 1 can be a single unit or any number of units. It can be combined arbitrarily according to the power and cooling capacity. In this embodiment, the entire battery system of the four-layer battery pack has completed a random vibration test of GB 31467.3 for twice the duration, and its strength meets the requirements for use in the existing commercial vehicle field.

[0058] In this disclosure, the top surface of the uppermost tray 11 is provided with a sealing cover 2, which is sealed to the frame of the uppermost tray 11. A sealing element 13 may be provided between the sealing cover 2 and the top surface of the frame 110 of the uppermost tray 11. The bottom surface of the lowermost battery pack 1 is provided with a cold plate 12. In two adjacent battery packs 1, the cold plate 12 of the upper battery pack serves as the sealing cover 2 of the lower battery pack, and the two battery packs 1 share the cold plate 12. In this way, the middle battery pack 1 does not need a sealing cover 2, and the cold plate 12 of the upper battery pack can serve as the sealing cover 2 of the lower battery pack. The entire battery system only needs to be provided with one sealing cover 2, which can meet the sealing requirements. At the same time, the upper and lower battery packs share the same cold plate 12 for cooling, which saves costs. For a single-layer battery pack, there are two cold plates 12 for cooling, which improves cooling efficiency and the service life of the cells. In an embodiment of the single-layer battery pack 1, the top surface of the frame 110 is sealed and connected by the sealing cover 2, and the bottom surface of the frame 110 is sealed and connected by the cold plate 12, which can ensure the sealing performance of the single pack.

[0059] In this disclosure, such as Figure 4 As shown, each battery pack 1 has a water inlet 111 and a water outlet 112 on the frame 110 of the tray 11. The tray 11 is equipped with a liquid cooling pipe that connects the water inlet 111, the water outlet 112 and the cold plate 12. When a single battery pack 1 is disassembled, the liquid cooling pipe is disassembled together with it, which will not affect the disassembly and assembly of multiple battery packs.

[0060] In this disclosure, such as Figure 4 As shown, the battery device also includes an explosion-proof valve 16. Each tray 11 has a venting channel 113 on its frame 110, which connects to the receiving cavity 1100 and the explosion-proof valve 16. Explosion-proof valves 16 can be installed on both sides of the tray 11 of the battery pack 1 to vent the battery packs 10 on both sides, ensuring the safety of each battery pack 1. Venting channels 113 can be installed on both sides of the frame 110 to ensure thermal diffusion venting of a single battery pack 1, while preventing thermal diffusion venting from a single battery pack from spreading to other battery packs 1.

[0061] According to a second aspect of this disclosure, an electrical device is provided that includes the battery device described above. This electrical device can be a vehicle, drone, aircraft, ferry, computer, energy storage system, etc., and possesses all the beneficial effects of the aforementioned electrical device, which will not be elaborated upon here.

[0062] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0063] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0064] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A battery device, characterized in that, The device includes a tray, a battery pack disposed within the tray, and a battery information collector. There is a gap between the frame of the tray and the end plate of the battery pack. The battery information collector can be inserted into the gap along a first direction and connected to the end plate and / or the frame.

2. The battery device according to claim 1, characterized in that, The battery device also includes a bracket, on which the battery information collector is mounted. The bracket can be inserted into the gap along a first direction and connected to the end plate.

3. The battery device according to claim 2, characterized in that, The bracket includes a bracket body and a mounting part. The bracket body is located within the gap, and the battery information collector is installed on the bracket body. The mounting part is located on one side of the end plate along the first direction and is connected to the end plate.

4. The battery device according to claim 3, characterized in that, The battery device also includes a communication converter disposed on the support body, and the communication converter is connected to the battery information collector.

5. The battery device according to claim 4, characterized in that, The bracket body includes a first mounting plate and a second mounting plate connected together. The battery information collector is connected to the first mounting plate, and the communication converter is connected to the second mounting plate.

6. The battery device according to claim 1, characterized in that, A connecting beam is connected to the end plate, and the connecting beam is connected to the tray by a locking device.

7. The battery device according to claim 6, characterized in that, The connecting beam is provided with a connecting hole extending along the first direction, and the locking member passes through the connecting hole to connect the connecting beam and the tray.

8. The battery device according to claim 1, characterized in that, The battery pack includes multiple individual battery cells arranged along a second direction. The end plate is located outside the outermost individual battery cell. Adjacent individual battery cells are connected by connecting pieces. The battery pack also includes a flexible circuit board connected to the multiple connecting pieces. The battery device also includes a low-voltage sampling harness connecting the flexible circuit board and the battery information collector to centrally transmit information from the multiple individual battery cells to the battery information collector through the multiple connecting pieces, the flexible circuit board, and the low-voltage sampling harness. The first direction and the second direction intersect.

9. The battery device according to claim 8, characterized in that, The flexible circuit board has a bent section that bends to the side of the end plate away from the individual battery cell. A connector is provided on the bent section. The low-voltage sampling harness includes a first connector terminal connected to the connector and a second connector terminal connected to the battery information collector.

10. The battery device according to claim 9, characterized in that, The bent section is connected to the end plate.

11. The battery device according to claim 9, characterized in that, Multiple battery cells are provided with multiple connecting pieces and flexible circuit boards on both sides along a third direction. The battery information collector is located between two bending sections. The low-voltage sampling harness includes two first connector terminals. The two first connector terminals are respectively connected to the connectors on the two bending sections. The first direction, the second direction and the third direction intersect each other.

12. The battery device according to claim 1, characterized in that, The tray is equipped with a low-voltage output connector, and the battery information collector is connected to the low-voltage output connector.

13. The battery device according to claim 1, characterized in that, The tray contains multiple battery packs, which are connected to both high-voltage and low-voltage connections.

14. The battery device according to claim 13, characterized in that, The tray is provided with a positive terminal connector and a negative terminal connector. The plurality of battery packs include a first battery pack located at both ends and at least one second battery pack located between two first battery packs. The first battery packs and the second battery packs are connected by a first jumper. The positive terminal connector is connected to the first battery pack at one end through a positive terminal connector, and the negative terminal connector is connected to the first battery pack at the other end through a negative terminal connector.

15. The battery device according to claim 14, characterized in that, There are multiple second battery packs, and each pair of adjacent second battery packs is provided with a second jumper. A circuit breaker is provided on the tray at a position corresponding to the second jumper, and the circuit breaker is connected to the second jumper.

16. The battery device according to any one of claims 1-15, characterized in that, The tray includes a frame and a cold plate fixed to the bottom surface of the frame, the frame and the cold plate being used to enclose and form a receiving cavity for accommodating the battery pack.

17. The battery device according to claim 16, characterized in that, The trays are multiple and stacked sequentially along the first direction, with the cold plate of the upper tray and the frame of the lower tray being sealed together.

18. The battery device according to claim 17, characterized in that, The top surface of the uppermost tray is provided with a sealing cover, which is sealed to the edge of the uppermost tray.

19. The battery device according to claim 16, characterized in that, The battery device also includes an explosion-proof valve, and the frame has an exhaust channel that connects the receiving cavity and the explosion-proof valve.

20. An electrical appliance, characterized in that, The battery device includes any one of claims 1-19.

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