Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment, the battery pack comprises at least one battery cell and at least one antenna, the battery cell comprises a battery cell body and a wireless BMS module arranged on the battery cell body, the wireless BMS module comprises a substrate, a battery cell acquisition unit and a wireless communication unit, and the battery cell acquisition unit is used for acquiring performance data of the battery cell body; the antenna is in communication connection with the wireless communication unit and used for transmitting performance data to external equipment, the wireless BMS module further comprises an antenna fixing piece, the antenna fixing piece is arranged on the surface of the substrate in a protruding mode, and a threading hole for the antenna to penetrate through is formed in the antenna fixing piece. When the antenna needs to be maintained or replaced or the wireless BMS module needs to be overhauled, a technician can easily pull the antenna out of or insert the antenna into the threading hole, so that the disassembly difficulty caused by gluing and fixing and the risk of possible damage to peripheral elements are avoided, the maintenance cost is reduced, the maintenance time is shortened, and the maintenance efficiency is improved. And the maintainability and the service life of the whole battery pack are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery technical field, especially a kind of battery pack and electrical equipment. BACKGROUND

[0002] Power battery generally includes box and the multiple battery monomer of being set in box. In order to realize the monitoring (for example temperature sampling, voltage sampling, overcurrent fuse etc.) of battery, technician designs BMS (Battery Management System, battery management system). With the development of technology, wireless BMS technology has become mature, wireless BMS mainly transmits battery information by wireless communication technology, not only can improve communication convenience, also can significantly reduce the use cost of wiring harness.

[0003] In related wireless BMS technology, antenna generally adopts the mode of fixing by gluing. With the growth of using time and the change of using environment, wireless BMS system can appear various faults or performance decline, and needs to be maintained and repaired. Since antenna is fixed by gluing, when antenna needs to be checked, replaced or adjusted, glued antenna is difficult to disassemble, and forcibly disassembling can easily cause damage to antenna itself and surrounding electronic components and circuit, increase maintenance cost and maintenance difficulty. Moreover, glue can appear aging, deterioration and other conditions in long-term use, affect the fixing stability of antenna and signal transmission performance, and the process of removing aging glue and re-fixing antenna is complex and time-consuming. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of battery pack and electrical equipment, to solve the technical problem of antenna replacement or maintenance difficulty of existing wireless BMS.

[0005] To achieve the above purpose, the utility model provides a kind of battery pack, including:

[0006] At least one electric core, the electric core includes electric core body and wireless BMS module arranged on the electric core body, the wireless BMS module includes substrate and electric core acquisition unit and wireless communication unit integrated on the substrate, the electric core acquisition unit is used to acquire the performance data of the electric core body;

[0007] At least one antenna, in communication connection with the wireless communication unit, for transmitting the performance data collected by the electric core acquisition unit to external equipment;

[0008] Wherein, the wireless BMS module further includes antenna fixing part, the antenna fixing part is protrudingly arranged on the surface of the substrate, and the antenna fixing part is configured with threading hole for the antenna to pass through.

[0009] In some embodiments, the antenna fixing member comprises a base portion for connecting with the substrate and a bent portion extending from the base portion, and the threading hole penetrates through the bent portion.

[0010] In some embodiments, the bent portion is configured with an opening on a radial side in communication with the threading hole, and the diameter of the threading hole is smaller than the outer diameter of the antenna.

[0011] In some embodiments, the bent portion on the antenna fixing member is provided with at least two, and the openings of the adjacent two bent portions are opposite.

[0012] In some embodiments, the wireless BMS module further comprises an adhesive layer, one side of the adhesive layer is connected with the antenna fixing member, and the other side of the adhesive layer is connected with the substrate.

[0013] In some embodiments, the antenna fixing member is provided with at least two, and the at least two antenna fixing members are arranged on the substrate in a spaced manner.

[0014] In some embodiments, the antenna is provided with at least two, and the at least two antennas are respectively arranged through the threading hole of the corresponding antenna fixing member and are respectively connected in communication with the wireless communication unit.

[0015] In some embodiments, the at least two antennas are arranged in parallel in a width direction or a length direction of the battery cell.

[0016] In some embodiments, the battery cell further comprises a top cover arranged on the top of the battery cell body, the top cover is provided with a window for exposing the wireless BMS module, and the top cover is provided with a clamping groove for accommodating the at least one antenna.

[0017] The utility model further provides a kind of electric equipment, including the battery pack as described above.

[0018] The battery pack provided in the application is provided with an antenna fixing member, which protrudes from the surface of the substrate. The antenna fixing member is configured with a threading hole for the antenna. When the antenna needs to be repaired, replaced or the wireless BMS module needs to be repaired, the technician can easily pull out or insert the antenna from the threading hole, avoiding the difficulty of disassembly caused by glue fixing and the risk of damage to the surrounding elements, reducing the maintenance cost and time, and improving the maintainability and service life of the entire battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a connection diagram between antenna and battery cell in an embodiment of the utility model;

[0020] Figure 2Part disassembly schematic view of the antenna and the battery cell in one embodiment of the utility model;

[0021] Figure 3 Structure schematic view of the wireless BMS module in one embodiment of the utility model;

[0022] Figure 4 Structure schematic view of the antenna fixing part in one embodiment of the utility model.

[0023] Explanation of reference numerals:

[0024] Reference Name Reference Name 10 Battery cell 11 Battery cell body 12 Battery cell collecting unit 20 Antenna 121 Substrate 110 Wireless BMS module 123 Antenna fixing member 124 Threading hole 1231 Basal part 1232 Bent part 1233 Opening 125 Top cover 1251 Window 1252 Clamping groove 13 Wireless communication unit

[0025] The utility model discloses the realization, functional characteristics and advantages will be further illustrated in conjunction with the embodiment, with reference to the drawings. Specific implementation

[0026] The scheme in the embodiment of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiment of the utility model, and obviously, the described embodiment is only a part of the embodiment in the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0027] It needs to be explained that all directionality instructions (such as up, down, left, right, front, back...) in the embodiment of the utility model are only used to explain the relative position relationship, movement condition and the like between the components in a certain specific posture (such as shown in the drawings), if the specific posture changes, then the directionality instruction also changes accordingly.

[0028] It also needs to be explained that when an element is called "fixed on" or "set on" another element, it can be directly on another element or there can be a middle element. When an element is called "connected" to another element, it can be directly connected to another element or there can be a middle element.

[0029] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection range required by the utility model.

[0030] Please refer to Figures 1 to 4In an embodiment of the present application, a battery pack is provided, which comprises at least one battery cell 10 and at least one antenna 20. The battery cell 10 comprises a battery cell body 11 and a wireless BMS module 110 arranged on the battery cell body 11. The wireless BMS module 110 comprises a substrate 121, a battery cell acquisition unit 12 and a wireless communication unit 13 integrated on the substrate 121. The battery cell acquisition unit 12 is configured to acquire performance data of the battery cell body 11. The at least one antenna 20 is in communication connection with the wireless communication unit 13, and is configured to transmit the performance data acquired by the battery cell acquisition unit 12 to an external device.

[0031] In an embodiment of the present application, the wireless BMS module 110 further comprises an antenna fixing member 123 protruding from a surface of the substrate 121. The antenna fixing member 123 is configured with a threading hole 124 for the antenna 20 to pass through.

[0032] In an embodiment of the present application, the battery cell acquisition unit 12 is configured to acquire various performance data of the battery cell body 11, such as voltage, current, temperature, etc. The performance data is used to evaluate the working state, health condition and safety of the battery cell 10, and to provide a basis for maintenance and replacement of the battery pack, and to ensure the safe operation of the battery pack and related equipment.

[0033] The wireless communication unit 13 serves as a bridge for data transmission, and transmits the performance data acquired by the battery cell acquisition unit 12 in the form of wireless signals. It should be noted that the wireless communication unit 13 can adopt a Bluetooth module, a Wi-Fi module or a ZigBee module, etc. for wireless transmission, which is not limited in the present application.

[0034] The at least one antenna 20 is in communication connection with the wireless communication unit 13, and the performance data can be transmitted to an external device through the antenna 20 for monitoring, analysis and management by the external device. It should be noted that the external device can be a master control device, or an automotive electronic control unit (ECU) or the like, which is configured to monitor the state of each battery cell in the battery pack in real time, and to ensure the stable operation of the system, which is not limited in the present application.

[0035] In an embodiment of the present application, the substrate 121 serves as a basic support structure for the battery cell acquisition unit 12, and provides a physical bearing platform for the battery cell acquisition unit 12, the wireless communication unit 13 and the antenna fixing member 123 integrated thereon. The substrate 121 can ensure a stable position and connection relationship during the operation of the battery cell 10, and can avoid problems such as inaccurate data acquisition or connection interruption caused by factors such as vibration and shaking.

[0036] In this embodiment, the antenna fixing member 123 arranged on the surface of the substrate 121 provides a fixed position and mounting method for the antenna 20. When installing the antenna 20, only need to pass the antenna 20 through the threading hole 124, the positioning and connection of the antenna 20 and the antenna fixing member 123 can be achieved, the operation is simple and easy to realize, and the difficulty and workload of the antenna 20 installation are reduced. In addition, by threading the antenna 20 through the threading hole 124, the antenna 20 can be extended along the predetermined direction, which facilitates the arrangement and management of the line, and can realize more reasonable layout in the limited battery pack space.

[0037] When maintenance, replacement of the antenna 20 or repair of the wireless BMS module 110 is required, the technician can easily pull out or insert the antenna 20 from the threading hole 124, avoiding the disassembly difficulty caused by gluing and the risk of damage to the surrounding elements, reducing the maintenance cost and time, and improving the maintainability and service life of the entire battery pack.

[0038] Please continue to refer to Figure 4 In some embodiments, the antenna fixing member 123 includes a base portion 1231 for connecting with the substrate 121 and a bent portion 1232 extending from the base portion 1231, and the threading hole 124 penetrates the bent portion 1232.

[0039] In this embodiment, the base portion 1231 is used to realize the stable connection of the antenna fixing member 123 and the substrate 121. The base portion 1231 can be connected with the substrate 121 in various ways, such as welding or bonding, etc. Through this close connection, the position of the antenna fixing member 123 on the substrate 121 is stable, and it will not loosen or shift due to the vibration, shaking, etc. of the battery pack during use, thereby providing a reliable fixing basis for the antenna 20.

[0040] The bent portion 1232, as a part extending from the base portion 1231, can change the installation direction and angle of the antenna 20, so that it can better adapt to the different space layout inside the battery pack. For example, in some battery pack designs, in order to avoid the conflict of the antenna 20 with other key components (such as the battery cell 10, the circuit board, etc.), the antenna 20 can be guided to the appropriate position for installation through the bent portion 1232.

[0041] In addition, the existence of the bent portion 1232 also increases the structural strength of the antenna fixing member 123. Compared with a simple straight rod structure, the bent structure can withstand greater external force to a certain extent, such as in the case of accidental collision, extrusion, etc. of the battery pack, the bent portion 1232 can better protect the antenna 20 from damage and ensure the integrity of the data transmission link.

[0042] In some embodiments, one side of the bent portion 1232 is configured with an opening 1233 communicating with the threading hole 124, and the diameter of the threading hole 124 is smaller than the outer diameter of the antenna 20.

[0043] Since the diameter of the threading hole 124 is smaller than the outer diameter of the antenna 20, it is usually difficult to directly pass the antenna 20 through the threading hole 124. With the opening 1233 communicating with the threading hole 124, when the antenna 20 is installed, one end of the antenna 20 can be first placed into the opening 1233 and guided to the position of the threading hole 124 along the opening 1233, and then the antenna 20 can be gradually passed into the direction of the threading hole 124, so that the antenna 20 can be more easily installed, improving the convenience and reducing the difficulty of installation.

[0044] In this embodiment, the diameter of the threading hole 124 is smaller than the outer diameter of the antenna 20, so that the antenna 20 can be tightly clamped after passing through the threading hole 124, which can effectively prevent the antenna 20 from loosening or shifting due to external forces such as vibration and shaking during use of the battery pack, ensuring the stability of the connection between the antenna 20 and the antenna fixing member 123, and further ensuring the reliability of data transmission.

[0045] In some embodiments, the bent portion 1232 on the antenna fixing member 123 is provided with at least two, and the openings 1233 of the adjacent two bent portions 1232 are opposite.

[0046] In this embodiment, at least two bent portions 1232 are provided and the openings 1233 are opposite, so that the antenna fixing member 123 presents a symmetrical and balanced state in structure, which is helpful to more stably install the antenna 20 in the internal space of the battery pack. Moreover, the design that the openings 1233 of the adjacent two bent portions 1232 are opposite provides more choices and flexibility for the installation of the antenna 20. Specifically, when the antenna 20 is installed, according to the specific space limitation, electromagnetic environment and relative position with other components in the battery pack and other factors, the antenna 20 can be selected to pass into the threading hole 124 from the opening 1233 of one of the bent portions 1232. If there is a space obstacle or electromagnetic interference problem in a certain direction, the other bent portion 1232 can be easily switched to install, greatly improving the convenience and adaptability of the installation of the antenna 20.

[0047] It should be noted that the number of bent portions 1232 can also be three or more, which can be selected and set according to different application scenarios, and the embodiments of the present application are not limited herein.

[0048] In some embodiments, the wireless BMS module 110 further comprises an adhesive layer, one side of the adhesive layer is connected with the antenna fixing member 123, and the other side of the adhesive layer is connected with the substrate 121.

[0049] In the embodiment, the antenna fixing member 123 is attached to the substrate 121 through the adhesive layer, and the adhesion of the adhesive can firmly fix the antenna fixing member 123 at a specific position of the substrate 121, which helps to maintain the relative position of the antenna fixing member 123 stable, and further ensures the position accuracy of the antenna 20 after being threaded through the threading hole 124, so that the relative positional relationship between the antenna 20 and the wireless communication unit 13 remains stable, ensuring the stability and reliability of wireless signal transmission.

[0050] In some embodiments, the antenna fixing member 123 is provided with at least two, and the at least two antenna fixing members 123 are arranged on the substrate 121 at intervals.

[0051] Among them, the at least two antenna fixing members 123 are arranged on the substrate 121 at intervals, so that the antenna 20 has a relatively uniform fixed point distribution when installed, which helps to better adapt to the internal space layout of the battery pack, especially in the case of regular arrangement of the battery cell 10 array, it can be coordinated with the overall layout, ensuring that the antenna 20 is fixed in the right place, avoiding the situation that the local space is too crowded or idle, and improving the utilization efficiency of the internal space of the battery pack.

[0052] During installation, the antenna 20 can be threaded through the threading holes 124 on the two antenna fixing members 123 in sequence, tightly connecting the antenna 20 and the antenna fixing member 123, further improving the connection stability of the antenna 20 and the antenna fixing member 123, which can effectively prevent the antenna 20 from loosening or shifting due to external forces such as vibration and shaking during use of the battery pack, greatly improving the firmness of the antenna 20 installation, and ensuring the stability of the data transmission link.

[0053] In the embodiment, due to the at least two spaced antenna fixing members 123, there is more adjustment margin when installing the antenna 20, which can be flexibly selected to pass the antenna 20 at different positions between the two antenna fixing members 123, or adjust the angle of the antenna 20 relative to the antenna fixing member 123, etc. according to the specific space situation inside the battery pack and the actual data transmission demand, etc., so that the installation of the antenna 20 can better meet the requirements under various complex conditions, and improve the flexibility and adaptability of the antenna 20 installation.

[0054] It should be noted that the number of antenna fixing members 123 can also be three or more, which can be selected and set according to different application scenarios, and the present application embodiment is not limited herein.

[0055] In some embodiments, the antenna 20 is provided with at least two, and the at least two antennas 20 are respectively threaded through the threading holes 124 of the corresponding antenna fixing members 123 and are respectively in communication connection with the wireless communication unit 13.

[0056] In this embodiment, the arrangement of multiple antennas 20 increases the redundancy of data transmission. When one of the antennas 20 fails, such as due to physical damage, severe signal interference, or other unexpected situations, another antenna 20 can continue to work normally to ensure the continuous transmission of performance data, thereby reducing the risk of data transmission interruption caused by the failure of a single antenna 20, reducing the impact of signal attenuation and interference, and improving the reliability and stability of data transmission. Moreover, different antennas 20 can work simultaneously to achieve parallel data transmission, greatly improving the efficiency of data transmission. Compared with single antenna transmission, the present application can transmit a large amount of battery cell 10 performance data to external equipment in a shorter time by arranging multiple antennas 20, making the monitoring of the battery pack state more timely and accurate.

[0057] It should be noted that the number of antennas 20 can be two, three, or more, which can be selected and arranged according to different application scenarios, and the present application embodiment does not limit this.

[0058] In some embodiments, at least two antennas 20 are arranged in parallel along the width direction or length direction of the battery cell 10.

[0059] In this embodiment, the antennas 20 are arranged in parallel along the width direction or length direction of the battery cell 10, which can make full use of the limited space on the surface or around the battery cell 10, and arrange multiple antennas 20 reasonably without occupying too much additional space, so that the antennas 20 can be better integrated with the battery cell 10 and other components, reducing the complexity of the layout of the lines and improving the utilization rate of the internal space of the battery pack.

[0060] In addition, the antennas 20 arranged in parallel can form a relatively uniform antenna 20 array, which can enhance the strength and stability of the signal through the coordinated work of multiple antennas 20 during data transmission. When one of the antennas 20 is interfered by the outside or the signal attenuates, other antennas 20 can make up for it, so as to ensure that the data can be stably and reliably transmitted to the external equipment, reducing the probability of data transmission interruption or error.

[0061] Compared with a single antenna or a randomly arranged antenna layout, the multiple antennas 20 of the present application arranged in parallel along the width direction or length direction of the battery cell 10 can effectively reduce the signal blind area, ensuring that each area around the battery pack can receive good signals, and improving the reliability and effectiveness of communication between the battery pack and the external equipment.

[0062] It should be noted that the parallel arrangement described in the present application embodiment can be a substantially parallel arrangement.

[0063] In some embodiments, the battery cell 10 further comprises a top cover 125 arranged on the top of the battery cell body 11, the top cover 125 is provided with a window 1251 for exposing the wireless BMS module 110, and the top cover 125 is provided with a clamping groove 1252 for accommodating at least one antenna 20.

[0064] The top cover 125 is arranged on the top of the battery cell body 11 to provide physical protection for the battery cell body 11, prevent foreign matters, dust, moisture and the like from entering the inside of the battery cell 10, avoid interference or damage to the normal operation of the battery cell 10, ensure the operation of the battery cell 10 in a relatively clean, dry and stable environment, and prolong the service life of the battery cell 10.

[0065] The wireless BMS module 110 is exposed through the window 1251 and can effectively interact with the outside, on the one hand, the performance data collected by the battery cell body 11 can be conveniently transmitted out, and on the other hand, maintenance personnel can directly contact the wireless BMS module 110 through the window 1251 to perform detection, maintenance or debugging operations, without the need to disassemble the entire top cover 125 of the battery cell 10, thereby improving work efficiency and convenience.

[0066] During the assembly of the battery pack, the antenna 20 is placed in the clamping groove 1252, so that the position of the antenna 20 is relatively fixed and accurate, and the antenna 20 is prevented from shaking or shifting at will inside the battery pack, thereby ensuring the connection stability between the antenna 20 and the battery cell collecting unit 12 and other related components, and improving the reliability of data transmission.

[0067] The application further provides a power utilization device comprising the battery pack as described above. Specifically, the power utilization device can be a new energy automobile, a power storage device, a computer, a mobile phone or the like. The power utilization device can have all the technical features of the battery pack and corresponding beneficial effects, which will not be described herein again.

[0068] The above embodiments of the utility model are merely examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. It is impossible to enumerate all the embodiments here. Any obvious changes or variations derived from the technical solutions of the utility model still fall within the protection scope of the utility model.

Claims

1. A battery pack, characterized by, The battery pack comprises: at least one battery cell, the battery cell comprising a battery cell body and a wireless BMS module arranged on the battery cell body, the wireless BMS module comprising a substrate and a battery cell acquisition unit and a wireless communication unit integrated on the substrate, the battery cell acquisition unit being configured to acquire performance data of the battery cell body; at least one antenna in communication connection with the wireless communication unit, configured to transmit the performance data acquired by the battery cell acquisition unit to an external device; wherein the wireless BMS module further comprises an antenna fixing member, the antenna fixing member being protrudingly arranged on a surface of the substrate, the antenna fixing member being configured with a threading hole for the antenna to pass through.

2. The battery pack of claim 1, wherein, The antenna fixing member comprises a base portion for connecting with the substrate and a bent portion extending from the base portion, and the threading hole penetrates through the bent portion.

3. The battery pack of claim 2, wherein, The bent portion is configured with an opening in communication with the threading hole on one side along a radial direction, and a diameter of the threading hole is smaller than an outer diameter of the antenna.

4. The battery pack of claim 3, wherein, The bent portion on the antenna fixing member is provided with at least two, and the openings of the adjacent two bent portions are opposite.

5. The battery pack of any one of claims 1-4, wherein, The wireless BMS module further comprises an adhesive layer, one side of the adhesive layer being connected with the antenna fixing member, and the other side of the adhesive layer being connected with the substrate.

6. The battery pack of any one of claims 1-4, wherein, The antenna fixing member is provided with at least two, and the at least two antenna fixing members are arranged on the substrate in a spaced manner.

7. The battery pack of claim 6, wherein, The antenna is provided with at least two, and the at least two antennas are respectively arranged in the threading hole corresponding to the antenna fixing member and are respectively in communication connection with the wireless communication unit.

8. The battery pack of claim 7, wherein, The at least two antennas are arranged in a parallel and spaced manner along a width direction or a length direction of the battery cell.

9. The battery pack of any one of claims 1-4, wherein, The battery cell further comprises a top cover arranged on a top of the battery cell body, the top cover being provided with a window for exposing the wireless BMS module, and the top cover being provided with a clamping groove for accommodating the at least one antenna.

10. An electric device, characterized by The battery pack comprises the battery cell as claimed in any one of claims 1 to 9.

Images