Chip assembly for battery, battery, energy storage device, and electric device

Abstract

An electric device (2000) comprises an energy storage device (1000), wherein the energy storage device (1000) comprises a battery (200), the battery (200) comprises a chip assembly (100) for the battery (200), the chip assembly (100) comprises a chip (10), a positive electrode member (101) and a negative electrode member (102), the chip (10) comprises a circuit structure and a detection structure, there is an integrated circuit on the circuit structure, and the detection structure is electrically connected to the circuit structure; one end of the positive electrode member (101) is electrically connected to the circuit structure, and the other end of the positive electrode member (101) is suitable for being connected to a positive electrode of the battery (200); and one end of the negative electrode member (102) is electrically connected to the circuit structure, and the other end of the negative electrode member (102) is suitable for being connected to a negative electrode of the battery (200).

Description

Chip components for batteries, batteries, energy storage devices and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese patent application filed on March 15, 2024, with application number 202420521467.X, and entitled “Chip components for batteries, batteries, energy storage devices, and electrical equipment,” all of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of power batteries, and in particular to a chip assembly for a battery, a battery, an energy storage device, and an electrical device. Background Art

[0004] Power batteries are the key to the development of new energy vehicles. With the accelerated development of vehicle electrification transformation, the cycle life and safety of power batteries have become the key constraints to the large-scale popularization of electric vehicles.

[0005] In related technologies, power battery management systems typically rely solely on external detection devices to monitor battery status. To make the battery structure more compact, some solutions place the detection device within the battery cells. However, these detection devices require external power or connection to an external power source to achieve effective detection. Consequently, the integration of the detection device with the battery is relatively low, leaving room for improvement. Summary of the Invention

[0006] The present application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, the present application proposes a chip assembly for a battery, which can be electrically connected to a battery to form an integrated, self-powered battery-chip assembly, thereby improving the integration of the battery and chip assembly.

[0007] This application also proposes a battery.

[0008] This application also proposes an energy storage device.

[0009] The present application also proposes an electrical device.

[0010] A chip assembly for a battery according to an embodiment of the present application includes a chip, a positive electrode member, and a negative electrode member. The chip includes a circuit structure and a detection structure, the detection structure being electrically connected to the circuit structure; one end of the positive electrode member is electrically connected to the circuit structure, and the other end of the positive electrode member is suitable for connection to the positive electrode of the battery; one end of the negative electrode member is electrically connected to the circuit structure, and the other end of the negative electrode member is suitable for connection to the negative electrode of the battery.

[0011] According to the chip assembly of the embodiment of the present application, the chip assembly is connected to the positive electrode of the battery through the positive electrode component, and the chip assembly is connected to the negative electrode of the battery through the negative electrode component. A closed circuit is formed between the chip assembly and the battery. The battery core can power the chip assembly to form an integrated self-powered battery chip assembly, thereby improving the degree of integration between the battery and the chip assembly.

[0012] In some embodiments, the chip further includes a wireless transmission structure, which is electrically connected to the circuit structure, and the wireless transmission structure is at least used to transmit the signal detected by the detection structure to an external device via wireless communication.

[0013] In some embodiments, the positive electrode member is electrically connected to the circuit structure via a first conductive wire; and / or the negative electrode member is electrically connected to the circuit structure via a second conductive wire.

[0014] In some embodiments, an outer surface of the first conductive wire is covered with an insulating layer, and an outer surface of the second conductive wire is covered with an insulating layer.

[0015] In some embodiments, the chip further includes a chip housing, the circuit structure and the detection structure are arranged in the chip housing, the other end of the positive electrode member and the other end of the negative electrode member are both located outside the chip housing, and the outer surface of the chip housing is covered with an insulating layer.

[0016] In some embodiments, the length of each of the positive electrode member and the negative electrode member ranges from 0.3 cm to 200 cm; and / or the width of each of the positive electrode member and the negative electrode member ranges from 0.2 cm to 50 cm; and / or the thickness of each of the positive electrode member and the negative electrode member ranges from 0.2 mm to 5 cm.

[0017] In some embodiments, the volume range of the chip is 5mm 3 -100cm 3 ; and / or, the weight range of the chip is 1mg-100g.

[0018] In some embodiments, the chip is in the shape of a cuboid, a cube, or a polyhedron.

[0019] In some embodiments, the detection structure includes a detection belt, one end of the detection belt is connected to the circuit structure, and the other end of the detection belt extends outside the circuit structure.

[0020] In some embodiments, the length of the detection tape ranges from 0.5 cm to 100 cm; and / or the width of the detection tape ranges from 0.2 cm to 5 cm; and / or the thickness of the detection tape ranges from 0.2 mm to 1 cm.

[0021] A battery according to an embodiment of the present application includes a battery housing, a core, and a chip assembly according to an embodiment of the present application. The battery housing is provided with a positive electrode post and a negative electrode post; the chip assembly is disposed within the battery housing; the core is disposed within the battery housing, the core having a positive electrode tab and a negative electrode tab; the positive electrode member and the positive electrode tab are connected to the positive electrode post, and the negative electrode member and the negative electrode tab are connected to the negative electrode post.

[0022] According to the battery of the embodiment of the present application, by arranging the chip assembly inside the battery housing, the chip assembly can monitor a single battery, and can achieve high-precision evaluation and safety warning of the battery's working status and health status, thereby greatly improving the safety performance of the battery. In addition, the chip assembly is connected to the positive pole of the battery through the positive electrode, and the chip assembly is connected to the negative pole of the battery through the negative electrode. A closed loop is formed between the chip assembly and the battery's pole core. The battery's pole core can power the chip assembly to form an integrated self-powered battery chip assembly, thereby improving the degree of integration between the battery and the chip assembly. In addition, the positive electrode and the positive electrode tab are connected to the positive pole, and the negative electrode and the negative electrode tab are connected to the negative pole. On the one hand, the internal structure of the battery can be made more compact and the internal space utilization of the battery can be improved; on the other hand, the pole core can be monitored to improve the accuracy of the evaluation and the safety of the battery.

[0023] In some embodiments, the battery case includes a case body, a positive electrode cover plate and a negative electrode cover plate, the positive electrode cover plate is arranged at one end of the case body, the positive electrode column is arranged on the positive electrode cover plate, the negative electrode cover plate is arranged at the other end of the case body, and the negative electrode column is arranged on the negative electrode cover plate; the positive electrode component is arranged on the positive electrode column side, the negative electrode component is arranged on the negative electrode column side, and the chip is arranged on the positive electrode column side or the negative electrode column side or between the positive electrode column and the negative electrode column.

[0024] The energy storage device according to an embodiment of the present application includes a plurality of the above-mentioned batteries.

[0025] According to the energy storage device of the embodiment of the present application, by setting the above-mentioned battery, the chip assembly is set inside the battery shell. The chip assembly can monitor a single battery, and can achieve high-precision evaluation and safety warning of the battery working status and health status, thereby greatly improving the safety performance of the battery. In addition, the chip assembly is connected to the positive pole of the battery through the positive electrode, and the chip assembly is connected to the negative pole of the battery through the negative electrode. A closed loop is formed between the chip assembly and the battery core. The battery core can power the chip assembly to form an integrated self-powered battery chip assembly, thereby improving the degree of integration between the battery and the chip assembly. In addition, the positive electrode and the positive pole ear are connected to the positive pole, and the negative electrode and the negative pole ear are connected to the negative pole. On the one hand, the internal structure of the battery can be made more compact and the internal space utilization of the battery can be improved; on the other hand, the pole core can be monitored to improve the accuracy of the evaluation and the safety of the battery.

[0026] The electrical equipment according to the embodiment of the present application includes the above-mentioned energy storage device.

[0027] According to the electrical equipment of the embodiment of the present application, by setting the above-mentioned energy storage device, the chip assembly is set inside the battery housing, and the chip assembly can monitor a single battery, and can achieve high-precision evaluation and safety warning of the battery working status and health status, thereby greatly improving the safety performance of the battery. In addition, the chip assembly is connected to the positive pole of the battery through the positive electrode, and the chip assembly is connected to the negative pole of the battery through the negative electrode. A closed loop is formed between the chip assembly and the battery core. The battery core can power the chip assembly to form an integrated self-powered battery chip assembly, thereby improving the degree of integration between the battery and the chip assembly. In addition, the positive electrode and the positive pole ear are connected to the positive pole, and the negative electrode and the negative pole ear are connected to the negative pole. On the one hand, the internal structure of the battery can be made more compact and the internal space utilization of the battery can be improved; on the other hand, the pole core can be monitored to improve the accuracy of the evaluation and the safety of the battery.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic diagram of a chip assembly according to an embodiment of the present application;

[0030] FIG2 is a schematic diagram of a chip assembly including a first conductive line according to an embodiment of the present application;

[0031] FIG3 is a schematic diagram of a chip assembly including a second conductive line according to an embodiment of the present application;

[0032] FIG4 is a schematic diagram of a chip assembly including a first conductive line and a second conductive line according to an embodiment of the present application;

[0033] FIG5 is a schematic diagram of a chip assembly including a detection band according to an embodiment of the present application;

[0034] FIG6 is a schematic diagram of the connection between the chip assembly including the second wire and the pole core according to an embodiment of the present application;

[0035] 7 is a schematic diagram of the connection between a chip assembly including a first wire and a pole core according to an embodiment of the present application;

[0036] FIG8 is a schematic diagram of the connection between a chip assembly including a first wire and a second wire and a pole core according to an embodiment of the present application;

[0037] FIG9 is a schematic diagram of a battery according to an embodiment of the present application;

[0038] FIG10 is a schematic diagram of an energy storage device according to an embodiment of the present application;

[0039] FIG11 is a schematic diagram of an electric device according to an embodiment of the present application.

[0040] Figure numerals: electrical device 2000, energy storage device 1000; chip assembly 100, battery 200; chip 10, positive electrode member 101, negative electrode member 102, first wire 11, second wire 12, detection tape 13; electrode core 20, positive electrode tab 201, negative electrode tab 202, positive electrode cover 21, positive electrode column 211, negative electrode cover 22, negative electrode column 222; insulating layer 30. DETAILED DESCRIPTION

[0041] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0042] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] The chip assembly 100 for the battery 200 according to an embodiment of the present application is described in detail below with reference to FIG. 1 to FIG. 11 .

[0044] 1 and 4 , a chip assembly 100 for a battery 200 according to an embodiment of the present application includes a chip 10 , a positive electrode component 101 , and a negative electrode component 102 .

[0045] The circuit structure has an integrated circuit, and the detection structure is electrically connected to the circuit structure, specifically to the integrated circuit on the circuit structure. Therefore, electrical signals can be transmitted between the detection structure and the circuit structure, thereby detecting the internal condition of the battery 200.

[0046] Optionally, the circuit structure may be a circuit board, a thin film circuit, or other forms of circuit structures.

[0047] It should be further explained that the detection structure can be a temperature sensor and its associated connectors to detect the temperature of the battery 200; a stress detection device to detect the stress condition within the battery 200; or an air pressure detection device to detect the air pressure within the battery 200. This means that, depending on the monitoring content and requirements, the detection structure within the chip 10 can be replaced to meet different testing needs. Therefore, the detection structure includes but is not limited to temperature sensors, stress detection devices, and air pressure detection devices.

[0048] As shown in Figures 6-8 , one end of the positive electrode member 101 is electrically connected to the circuit structure, and the other end of the positive electrode member 101 can be connected to the positive electrode post 211 of the battery 200. One end of the negative electrode member 102 is electrically connected to the circuit structure, and the other end of the negative electrode can be connected to the negative electrode post 222 of the battery 200. Thus, the detection structure is electrically connected to the circuit structure, and the circuit structure is electrically connected to the battery 200 via the positive electrode member 101 and the negative electrode member 102. This means that the battery 200 can power the detection structure, and thus the chip assembly 100.

[0049] In the related art, the detection structure realizes effective detection by external power supply or electrical connection with an external power source; in the present application, the battery 200 can supply power to the detection structure, and the battery 200 and the chip assembly 100 form an integrated self-powered battery chip assembly, without the need to set up an external power source to power the chip assembly 100, thereby improving the integration of the battery 200 and the chip assembly 100.

[0050] It should be pointed out that the average power consumption of the chip component 100 during normal operation is between 1mW-100mW, and the power consumption during sleep is between 1μW-100μW. The average power consumption of the chip component 100 is much smaller than the average power consumption of the battery 200 during operation. The impact of the average power consumption loss of the chip component 100 on the battery 200 can be ignored.

[0051] According to the chip assembly 100 of the embodiment of the present application, the chip assembly 100 is connected to the positive electrode column 211 of the battery 200 through the positive electrode component 101, and the chip assembly 100 is connected to the negative electrode column 222 of the battery 200 through the negative electrode component 102. A closed circuit is formed between the chip assembly 100 and the battery 200. The pole core 20 of the battery 200 can supply power to the chip assembly 100, forming an integrated self-powered battery chip assembly, thereby improving the degree of integration between the battery 200 and the chip assembly 100.

[0052] In some embodiments, the chip 10 further includes a wireless transmission structure. The wireless transmission structure can be electrically connected to the circuit structure and can transmit signals using wireless communication. The wireless transmission structure is at least used to transmit signals to an external device. The transmitted signals may include signals detected by the detection structure, or the signals may include circuit structure status signals of the chip assembly 100 and signals detected by the detection structure. By providing a wireless transmission structure to transmit signals, no additional connecting wires are required to be led out from the interior of the battery 200, thereby eliminating the need to open holes in the battery housing structure to pass the connecting wires, which helps to improve the overall sealing of the battery 200.

[0053] In some embodiments, the wireless transmission structure can transmit a signal to an external device at predetermined intervals. Alternatively, in other embodiments, the wireless transmission structure further includes a receiving module and a transmitting module, wherein the transmitting module transmits the signal to the external device only when the receiving module receives a trigger command from the external device.

[0054] Optionally, the communication mode of the wireless transmission structure can be 4G communication, 5G communication or Bluetooth, etc.

[0055] For example, the communication rate of the chip 10 is between 2 Mbps and 10 Mbps, the stable communication distance is between 0.1 m and 1000 m, and the transmission delay is less than 10 ms.

[0056] As shown in Figures 2 to 4, in some embodiments, the positive electrode member 101 is electrically connected to the circuit structure via a first wire 11; and / or the negative electrode member 102 is electrically connected to the circuit structure via a second wire 12. The connection between the circuit structure and the positive electrode member 101 and between the circuit structure and the negative electrode member 102 can be achieved by either direct connection or by wire switching. By adopting the wire switching method, the installation position of the chip 10 and the circuit structure can be made more flexible. The position of the positive electrode member 101 and the negative electrode member 102 does not need to be too close, and the position can be adjusted according to different battery 200 types and monitoring types, thereby improving the adaptability of the chip assembly 100.

[0057] As shown in FIG. 2 , for example, the positive electrode member 101 can be electrically connected to the circuit structure via a first wire 11 , and the negative electrode member 102 is directly connected to the circuit structure.

[0058] As shown in FIG3 , for example, the positive electrode member 101 may be directly connected to the circuit structure, and the negative electrode member 102 may be connected to the circuit structure via a second wire 12 .

[0059] As shown in FIG. 4 , for example, the positive electrode member 101 may be connected to the circuit structure via a first wire 11 , and the negative electrode member 102 may be connected to the circuit structure via a second wire 12 .

[0060] It should be further explained that the first conductive wire 11 and the second conductive wire 12 can be made of one or a combination of copper, silver, aluminum and some alloy materials with good electrical conductivity.

[0061] As shown in Figures 2 to 4, in some embodiments, the outer surface of the first wire 11 is covered with an insulating layer 30 (not shown); the outer surface of the second wire 12 is covered with an insulating layer 30 (not shown); by covering the outer surfaces of the first wire 11 and the second wire 12 with the insulating layer 30, the wires can be effectively prevented from being corroded by the electrolyte in the battery 200.

[0062] In some embodiments, the chip 10 includes a chip housing, and the circuit structure and the detection structure are arranged in the chip housing, and the chip housing can protect the circuit structure and the detection structure. The other end of the positive electrode 101 and the other end of the negative electrode 102 are both located outside the chip housing. The outer surface of the chip housing is coated with an insulating layer 30 (not shown), the connection between the first wire 11 and the chip housing is coated with an insulating layer 30, and the connection between the second wire 12 and the chip housing is coated with an insulating layer 30. By arranging the insulating layer 30 at the above positions, the chip housing can be protected, and the connection between the first wire 11 and the chip housing and the connection between the second wire 12 and the chip housing can also be protected, preventing the chip housing, the connection between the first wire 11 and the chip housing, and the connection between the second wire 12 and the chip housing from being corroded by the electrolyte in the battery 200.

[0063] Optionally, the chip housing may be a hard housing or a soft housing.

[0064] For example, the insulating layer 30 may be made of one or more materials selected from the group consisting of polyimide, polypropylene, and polyethylene.

[0065] In some embodiments, the length of each of the positive electrode member 101 and the negative electrode member 102 ranges from 0.3 cm to 200 cm; and / or the width of each of the positive electrode member 101 and the negative electrode member 102 ranges from 0.2 cm to 50 cm; and / or the thickness of each of the positive electrode member 101 and the negative electrode member 102 ranges from 0.2 mm to 5 cm. The length, width, and thickness of the positive electrode member 101 and the negative electrode member 102 can be adjusted to accommodate different battery types 200.

[0066] Optionally, the length of the positive electrode member 101 can be 0.3 cm, 1.7 cm, 20 cm, 47 cm, 91 cm, 110 cm, 149 cm, 178 cm, 200 cm, etc. Of course, the length of the positive electrode member 101 can also be other values ​​between 0.3 cm and 200 cm, which are not listed here. The length of the negative electrode member 102 can be 0.3 cm, 2.8 cm, 30 cm, 49 cm, 81 cm, 110 cm, 142 cm, 168 cm, 200 cm, etc. Of course, the length of the negative electrode member 102 can also be other values ​​between 0.3 cm and 200 cm, which are not listed here.

[0067] Optionally, the width of the positive electrode member 101 can be 0.2 cm, 6.7 cm, 16.0 cm, 24 cm, 27 cm, 34.2 cm, 41.6 cm, 45 cm, 50 cm, etc. Of course, the width of the positive electrode member 101 can also be other values ​​between 0.2 cm and 50 cm, which are not listed here. The width of the negative electrode member 102 can be 0.2 cm, 4.7 cm, 14.0 cm, 21 cm, 26 cm, 33.2 cm, 40.6 cm, 47 cm, 50 cm, etc. Of course, the width of the negative electrode member 102 can also be other values ​​between 0.2 cm and 50 cm, which are not listed here.

[0068] Optionally, the thickness of the positive electrode member 101 can be 0.2 cm, 0.4 cm, 0.51 cm, 2 cm, 2.7 cm, 3.42 cm, 4.6 cm, 4.67 cm, 5.0 cm, etc. Of course, the thickness of the positive electrode member 101 can range from 0.2 mm to 5 cm, which are not listed here. The thickness of the negative electrode member 102 can be 0.2 cm, 0.3 cm, 0.61 cm, 1 cm, 1.7 cm, 2.44 cm, 3.6 cm, 4.67 cm, 5.0 cm, etc. Of course, the thickness of the negative electrode member 102 can range from 0.2 mm to 5 cm, which are not listed here.

[0069] For example, both the positive electrode member 101 and the negative electrode member 102 are hard members.

[0070] In some embodiments, the volume range of the chip 10 is 5mm3 -100cm 3 , and / or, the weight range of the chip 10 is 1mg-100g. According to different battery 200 structures, the size of the chip 10 can be adjusted and modified accordingly to improve the adaptability of the chip 10.

[0071] Optionally, the volume of the chip 10 can be 5mm 3 , 10cm 3 , 22cm 3 、42cm 3 、67cm 3 , 74cm 3 , 82cm 3 、91cm 3 , 95cm 3 , 100cm 3 etc. Of course, the volume of the chip 10 can be 5mm 3 -100cm 3 The weight of the chip 10 may be 1 mg, 4 mg, 125 mg, 800 mg, 1 g, 2 g, 15 g, 42 g, 76 g, 87 g, 100 g, etc. Of course, the weight of the chip 10 may be other values ​​between 1 mg and 100 g, which are not listed here.

[0072] In some embodiments, the shape of the chip 10 can be a rectangular parallelepiped; or, the shape of the chip 10 can be a cube; or, the shape of the chip 10 can be a polyhedron. According to different battery 200 structures, the shape of the chip 10 can be adjusted and modified accordingly to improve the adaptability of the chip 10.

[0073] As shown in FIG5 , in some embodiments, the detection structure further includes a detection strip 13 , one end of which is connected to the circuit structure, and the other end of which extends outside the circuit structure. Specifically, a detection strip 13 may extend from the middle of the chip 10 , and the detection strip 13 may extend into the interior of the battery cell 200 , thereby facilitating more accurate monitoring of the battery 200 .

[0074] For example, the chip 10 includes a chip housing, one end of the detection tape 13 is connected to the circuit structure, and the other end of the detection tape 13 is located outside the chip housing.

[0075] Preferably, when the detection structure is a temperature sensor, a detection belt 13 can be extended from the middle position of the chip 10, and the detection belt 13 can be extended between the pole piece and the diaphragm inside the pole core 20 to perform more accurate temperature monitoring of the battery 200.

[0076] It should be further explained that the number, length, width, etc. of the detection strips 13 can be modified and adjusted accordingly according to monitoring requirements. The surface of the detection strips 13 and the connection with the chip 10 are also covered by the insulating layer 30.

[0077] In some embodiments, the length range of the detection tape 13 is 0.5 cm-100 cm; and / or, the width range of the detection tape 13 is 0.2 cm-5 cm; and / or, the thickness range of the detection tape 13 is 0.2 mm-1 cm, thereby adjusting the size of the detection tape 13 according to the type, size and monitoring type of the battery 200 to improve the adaptability of the detection tape 13.

[0078] Optionally, the length of the detection tape 13 can be 0.5 cm, 4 cm, 17 cm, 21 cm, 54 cm, 94 cm, 100 cm, etc. The width of the detection tape 13 can be 0.2 cm, 0.4 cm, 1.4 cm, 2.7 cm, 3.6 cm, 4.8 cm, 5.0 cm, etc. The thickness of the detection tape 13 can be 0.2 cm, 0.3 cm, 0.4 cm, 0.6 cm, 0.7 cm, 0.9 cm, or 1 cm. Of course, the length of the detection tape 13 can be other values ​​between 0.5 cm and 100 cm, the width of the detection tape 13 can be other values ​​between 0.2 cm and 5 cm, and the thickness of the detection tape 13 can be other values ​​between 0.2 mm and 1 cm, which are not listed here one by one.

[0079] As shown in Figures 6-9, a battery 200 according to an embodiment of the present application includes a battery housing, a core 20, and a chip assembly 100 according to an embodiment of the utility model. The battery housing is provided with a positive electrode post 211 and a negative electrode post 222; the chip assembly 100 is disposed within the battery housing; the core 20 is disposed within the battery housing and has a positive electrode tab 201 and a negative electrode tab 202. The positive electrode member 101 and the positive electrode tab 201 are connected to the positive electrode post 211, while the negative electrode member 102 and the negative electrode tab 202 are connected to the negative electrode post 222.

[0080] In related technologies, power battery management systems typically use external sensors to monitor the battery module level. These sensors monitor voltage and temperature signals at the battery module level, but are unable to monitor and assess the health and safety status of each battery within the battery module. In this application, the chip assembly 100 is disposed within the battery housing. The chip assembly 100 can monitor individual batteries 200 and the core 20 of the battery 200, enabling high-precision assessment and safety warning of the working and health status of the battery 200 and the core 20 of the battery 200, thereby improving the safety performance of the battery 200.

[0081] According to the battery 200 of the embodiment of the present application, by arranging the chip assembly 100 inside the battery housing, the chip assembly 100 can monitor a single battery 200, and can achieve high-precision assessment and safety warning of the working status and health status of the battery 200, thereby greatly improving the safety performance of the battery 200. In addition, the chip assembly 100 is connected to the positive electrode post 211 of the battery 200 through the positive electrode member 101, and the chip assembly 100 is connected to the negative electrode post 222 of the battery 200 through the negative electrode member 102. A closed circuit is formed between the chip assembly 100 and the pole core 20 of the battery 200. The pole core 20 of the battery 200 can power the chip assembly 100, forming an integrated self-powered battery chip assembly, thereby improving the degree of integration between the battery 200 and the chip assembly 100. In addition, the positive electrode component 101 and the positive electrode tab 201 are connected to the positive electrode column 211, and the negative electrode component 102 and the negative electrode tab 202 are connected to the negative electrode column 222. On the one hand, this can make the internal structure of the battery 200 more compact and improve the internal space utilization of the battery 200; on the other hand, it can monitor the electrode core 20 to improve the accuracy of the evaluation and the safety of the battery 200.

[0082] As shown in Figures 6-8, in some embodiments, the battery case includes a case body (not shown), a positive electrode cover plate 21, and a negative electrode cover plate 22. The positive electrode cover plate 21 is disposed at one end of the case body, with the positive electrode post 211 disposed on the positive electrode cover plate 21. The negative electrode cover plate 22 is disposed at the other end of the case body, with the negative electrode post 222 disposed on the negative electrode cover plate 22. The positive electrode member 101 is disposed on the side of the positive electrode post 211, and the negative electrode member 102 is disposed on the side of the negative electrode post 222. The chip 10 can be disposed on the side of the positive electrode post 211; alternatively, the chip 10 can be disposed on the side of the negative electrode post 222; or alternatively, the chip 10 can be disposed between the positive electrode post 211 and the negative electrode post 222. This means that the installation position of the chip 10 in the battery case can be varied, and the placement of the chip 10 within the battery 200 can be adjusted as needed, thereby effectively monitoring state changes at different locations within the battery 200.

[0083] As shown in FIG. 6 , for example, the chip 10 and the positive electrode member 101 are arranged on the positive electrode column 211 side, the negative electrode member 102 is arranged on the negative electrode column 222 side, and the negative electrode member 102 is connected to the chip 10 through the second wire 12 .

[0084] As shown in FIG. 7 , for example, the chip 10 and the negative electrode member 102 are arranged on the negative electrode column 222 side, the positive electrode member 101 is arranged on the positive electrode column 211 side, and the positive electrode member 101 is connected to the chip 10 through the first wire 11 .

[0085] As shown in Figure 8, for example, the chip 10 is located between the positive electrode column 211 and the negative electrode column 222, the positive electrode component 101 is arranged on the side of the positive electrode column 211, and the positive electrode component 101 is connected to the chip 10 through the first wire 11; the negative electrode component 102 is arranged on the side of the negative electrode column 222, and the negative electrode component 102 is connected to the chip 10 through the second wire 12.

[0086] As shown in FIG6 , in some specific examples, the chip 10 is first placed on the side of the positive electrode post 211. The positive electrode member 101 of the chip 10 is then connected to the positive electrode tab 201 of the electrode core 20 by ultrasonic welding or laser welding, or a combination of both. The positive electrode tab 201 to which the positive electrode member 101 is welded is then laser welded to the positive electrode post 211 on the positive electrode cover 21. The negative electrode member 102 is connected to the chip 10 via a second wire 12. The negative electrode member 102 is placed on the negative side of the battery 200 and welded to the negative electrode tab 202 of the electrode core 20. After welding is completed, the negative electrode tab 202 is laser welded to the negative electrode post 222 on the negative electrode cover 22. This connects the positive portion of the chip 10 to the positive electrode tab 201 and the negative portion to the negative electrode tab 202, thereby forming a closed circuit within the battery 200, powering the chip 10 and forming an integrated self-powered chip.

[0087] As shown in FIG7 , in some specific examples, the chip 10 is first placed on the negative electrode post 222 side. The negative electrode member 102 of the chip 10 is then connected to the negative electrode tab 202 of the electrode core 20 by ultrasonic welding or laser welding, or a combination of both. The negative electrode tab 202, to which the negative electrode member 102 is welded, is then laser welded to the negative electrode post 222 on the negative electrode cover 22. The positive electrode member 101 is connected to the chip 10 via a first wire 11. The positive electrode member 101 is placed on the positive side of the battery 200 and welded to the positive electrode tab 201 of the electrode core 20. After welding, the positive electrode tab 201 is then laser welded to the positive electrode post 211 on the positive electrode cover 21. This connects the positive portion of the chip 10 to the positive electrode tab 201 and the negative portion to the negative electrode tab 202, thereby forming a closed circuit within the battery 200, powering the chip 10 and forming an integrated self-powered chip.

[0088] As shown in FIG8 , in some specific examples, the chip 10 is placed between the positive electrode post 211 and the negative electrode post 222. The positive electrode member 101 is connected to the chip 10 via a first wire 11. The positive electrode member 101 is placed on the positive side of the battery 200. The positive electrode member 101 is welded to the positive electrode tab 201 of the electrode core 20. After welding, the positive electrode tab 201 is laser welded to the positive electrode post 211 on the positive electrode cover 21. The negative electrode member 102 is connected to the chip 10 via a second wire 12. The negative electrode member 102 is placed on the negative side of the battery 200. The negative electrode member 102 is welded to the negative electrode tab 202 of the electrode core 20. After welding, the negative electrode tab 202 is laser welded to the negative electrode post 222 on the negative electrode cover 22. In this way, the positive electrode part of the chip 10 is connected to the positive electrode tab 201, and the negative electrode part is connected to the negative electrode tab 202, thereby forming a closed loop inside the battery 200 to power the chip 10 and form an integrated self-powered chip.

[0089] In some examples not shown in the figures, the battery case only includes a case body and a positive electrode cover 21, one end of the case body has an opening, the positive electrode cover 21 is arranged at the opening of the case body, the positive electrode post 211 is arranged on the positive electrode cover 21, the positive electrode member 101 and the positive electrode tab 201 are connected to the positive electrode post 211, the negative electrode post 222 is arranged on the case body and in contact with the case body, the negative electrode member 102 and the negative electrode tab 202 are connected to the negative electrode post 222, and the case body is negatively charged.

[0090] It should be pointed out that the positive electrode member 101 of the chip 10 can be connected to the positive electrode tab 201 of the electrode core 20, and the negative electrode member 102 of the chip 10 can be connected to the negative electrode tab 202 of the electrode core 20; and then welded to the corresponding positive electrode column 211 and negative electrode column 222. This connection method is simple and practical.

[0091] In some embodiments, the battery 200 may be a blade-shaped battery. For example, the length of the blade-shaped battery may range from 400 mm to 700 mm. For another example, the length of the blade-shaped battery may be greater than 700 mm. The battery 200 may also be a cylindrical battery, a square battery, or a soft-pack battery. The chip 10 is applicable to all of these batteries 200. However, the shape, structure, and size of the chip 10 may need to be adjusted and modified accordingly depending on the different battery 200 structures.

[0092] In some specific examples, an insulating plate is provided between the positive electrode column 211 and the positive electrode cover plate 21, and an insulating plate is provided between the negative electrode column 222 and the negative electrode cover plate 22. By providing the insulating plate, the positive electrode column 211 and the negative electrode column 222 can be charged, while the positive electrode cover plate 21 and the negative electrode cover plate 22 are not charged, thereby avoiding the current from being conducted to the shell body through the positive electrode cover plate 21 and the negative electrode cover plate 22, thereby reducing the risk of short circuit.

[0093] As shown in FIG10 , the energy storage device 1000 according to the embodiment of the present application includes a plurality of batteries 200 according to the above-mentioned embodiments. By arranging the above-mentioned batteries 200 and arranging the chip assembly 100 inside the battery housing, the chip assembly 100 can monitor a single battery 200, and can achieve high-precision assessment and safety warning of the working state and health state of the battery 200, thereby greatly improving the safety performance of the battery 200. In addition, the chip assembly 100 is connected to the positive pole 211 of the battery 200 through the positive electrode 101, and the chip assembly 100 is connected to the negative pole 222 of the battery 200 through the negative electrode 102. A closed circuit is formed between the chip assembly 100 and the pole core 20 of the battery 200. The pole core 20 of the battery 200 can power the chip assembly 100, forming an integrated self-powered battery chip assembly, which improves the degree of integration between the battery 200 and the chip assembly 100. In addition, the positive electrode member 101 and the positive electrode tab 201 are connected to the positive electrode post 211, and the negative electrode member 102 and the negative electrode tab 202 are connected to the negative electrode post 222. On the one hand, this can make the internal structure of the battery 200 more compact and improve the internal space utilization of the battery 200; on the other hand, it can monitor the electrode core 20, thereby improving the accuracy of the assessment and the safety of the battery 200. As shown in Figure 11, the electrical device 2000 according to the embodiment of the present application includes the energy storage device 1000 of the above embodiment. By providing the above energy storage device 1000 and arranging the chip assembly 100 inside the battery housing, the chip assembly 100 can monitor a single battery 200, and can achieve high-precision assessment and safety warning of the working status and health status of the battery 200, thereby greatly improving the safety performance of the battery 200. Furthermore, the chip assembly 100 is connected to the positive electrode post 211 of the battery 200 via the positive electrode member 101, and is connected to the negative electrode post 222 of the battery 200 via the negative electrode member 102. This forms a closed circuit between the chip assembly 100 and the core 20 of the battery 200. The core 20 of the battery 200 can power the chip assembly 100, forming an integrated self-powered battery chip assembly and improving the integration of the battery 200 and the chip assembly 100. Furthermore, the positive electrode member 101 and the positive tab 201 are connected to the positive electrode post 211, while the negative electrode member 102 and the negative tab 202 are connected to the negative electrode post 222. This, on the one hand, makes the internal structure of the battery 200 more compact and improves the internal space utilization of the battery 200; on the other hand, it allows for monitoring of the core 20, improving the accuracy of the assessment and the safety of the battery 200.

[0094] Optionally, the electric device 2000 may be a vehicle, a ship, an airplane, a machine tool, a household appliance, etc.

[0095] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0096] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0097] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0098] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A chip assembly (100) for a battery (200), wherein: include: A chip (10), the chip (10) comprising a circuit structure and a detection structure, the detection structure being electrically connected to the circuit structure; A positive electrode member (101), one end of the positive electrode member (101) being electrically connected to the circuit structure, and the other end of the positive electrode member (101) being suitable for connection to the positive electrode of the battery (200); A negative electrode member (102), one end of the negative electrode member (102) is electrically connected to the circuit structure, and the other end of the negative electrode member (102) is suitable for being connected to the negative electrode of the battery (200).

2. The chip assembly (100) according to claim 1, wherein: The chip (10) further comprises a wireless transmission structure, the wireless transmission structure is electrically connected to the circuit structure, and the wireless transmission structure is at least used to transmit the signal detected by the detection structure to an external device by wireless communication.

3. The chip assembly (100) according to claim 1 or 2, wherein: The positive electrode member (101) is electrically connected to the circuit structure via a first wire (11); and / or the negative electrode member (102) is electrically connected to the circuit structure via a second wire (12).

4. The chip assembly (100) according to claim 3, wherein: The outer surface of the first conductive wire (11) is covered with an insulating layer (30), and the outer surface of the second conductive wire (12) is covered with an insulating layer (30).

5. The chip assembly (100) according to any one of claims 1 to 4, wherein: The chip (10) further comprises a chip housing, the circuit structure and the detection structure are arranged in the chip housing, the other end of the positive electrode member (101) and the other end of the negative electrode member (102) are both located outside the chip housing, and the outer surface of the chip housing is covered with an insulating layer (30).

6. The chip assembly (100) according to any one of claims 1 to 5, wherein: The length of each of the positive electrode member (101) and the negative electrode member (102) is in the range of 0.3 cm to 200 cm; and / or the width of each of the positive electrode member (101) and the negative electrode member (102) is in the range of 0.2 cm to 50 cm; and / or the thickness of each of the positive electrode member (101) and the negative electrode member (102) is in the range of 0.2 mm to 5 cm.

7. The chip assembly (100) according to any one of claims 1 to 6, wherein: The volume range of the chip (10) is 5mm 3 -100cm 3 ; and / or, the weight range of the chip (10) is 1 mg-100 g.

8. The chip assembly (100) according to any one of claims 1 to 7, wherein: The chip (10) is in the shape of a cuboid, a cube, or a polyhedron.

9. The chip assembly (100) according to any one of claims 1 to 8, wherein: The detection structure comprises a detection belt (13), one end of the detection belt (13) is connected to the circuit structure, and the other end of the detection belt (13) extends outside the circuit structure.

10. The chip assembly (100) according to claim 9, wherein: The length of the detection tape (13) ranges from 0.5 cm to 100 cm; and / or the width of the detection tape (13) ranges from 0.2 cm to 5 cm; and / or the thickness of the detection tape (13) ranges from 0.2 mm to 1 cm.

11. A battery (200), wherein: include: A battery housing, wherein the battery housing is provided with a positive electrode post (211) and a negative electrode post (222); The chip assembly (100) according to any one of claims 1 to 10, wherein the chip assembly (100) is arranged in the battery housing; A pole core (20), the pole core (20) is arranged in the battery housing, the pole core (20) has a positive pole tab (201) and a negative pole tab (202), the positive pole piece (101) and the positive pole tab (201) are connected to the positive pole column (211), and the negative pole piece (102) and the negative pole tab (202) are connected to the negative pole column (222).

12. The battery (200) according to claim 11, wherein The battery case comprises a case body, a positive electrode cover plate (21) and a negative electrode cover plate (22), wherein the positive electrode cover plate (21) is arranged at one end of the case body, and the positive electrode column (211) is arranged on the positive electrode cover plate (21); the negative electrode cover plate (22) is arranged at the other end of the case body, and the negative electrode column (222) is arranged on the negative electrode cover plate (22); The positive electrode member (101) is arranged on the side of the positive electrode column (211), the negative electrode member (102) is arranged on the side of the negative electrode column (222), and the chip (10) is arranged on the side of the positive electrode column (211) or the side of the negative electrode column (222) or between the positive electrode column (211) and the negative electrode column (222).

13. An energy storage device (1000), wherein: Comprising a plurality of batteries (200) according to claim 11 or 12.

14. An electrical device (2000), wherein: Comprising the energy storage device (1000) according to claim 13.

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