Spacer, battery, energy storage device, and electric device

Abstract

An electric device, comprising an energy storage device. The energy storage device comprises a battery. The battery comprises a spacer, which is provided with a chip fixing region used for fixing a chip and a tab slot used for allowing a tab to pass through same, wherein the chip fixing region is spaced apart from the tab slot.

Description

Spacers, batteries, energy storage devices and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application with application date of May 31, 2024, application number 202410703218.7, and patent application name “Battery spacer structure, battery, energy storage equipment and electrical equipment”, and priority to Chinese patent application with application date of February 29, 2024, application number 202420413395.7, and patent application name “Battery cell, battery pack and electrical device”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a spacer, a battery, an energy storage device, and an electrical device. Background Art

[0004] Batteries are the key to the development of new energy vehicles. With the accelerated development of vehicle electrification, battery safety has become the key to restricting the large-scale popularization of electric vehicles.

[0005] In related technologies, battery management systems usually use external chips to monitor signals such as the voltage and temperature of the battery's internal core. However, the external placement of the chip causes the chip and the core to be separated by the battery casing, resulting in inaccurate monitoring results. Therefore, it is necessary to improve the design of the battery-related structure. Summary of the Invention

[0006] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application proposes a spacer ring with a chip fixing area provided on the spacer ring to facilitate fixing the chip on the spacer ring, thereby realizing the chip being built into the battery.

[0007] The present application also provides a battery having the above-mentioned spacer.

[0008] The present application also proposes an energy storage device having the above-mentioned battery.

[0009] The present application also proposes an electrical device having the above energy storage device.

[0010] According to an embodiment of the present application, a chip fixing area for fixing the chip and a tab insertion hole for allowing the tab to pass through are provided on the spacer, and the chip fixing area is spaced apart from the tab insertion hole.

[0011] According to the spacer of the embodiment of the present application, a chip fixing area is provided on the spacer to facilitate fixing the chip on the spacer, so that the chip and the spacer become a whole, which is convenient for the subsequent assembly of the battery and realizes the chip being built into the battery.

[0012] According to some embodiments of the present application, the spacer includes a first frame and a second frame, the first frame and the second frame are connected, the tab socket is formed between the first frame and the second frame, the chip fixing area includes a first half area and a second half area, the first half area is set in the first frame, and the second half area is set in the second frame.

[0013] According to some embodiments of the present application, the first frame body and the second frame body are snap-connected and fixed, and the snap-connected and fixed portion of the first frame body and the second frame body is spaced apart from the tab socket.

[0014] According to some embodiments of the present application, the spacer includes a bottom wall plate and a side wall plate arranged around the outside of the bottom wall plate, the side wall plate extends at least toward the first side of the bottom wall plate, the chip fixing area is located on the first side of the bottom wall plate, and the tab socket is formed on the bottom wall plate.

[0015] According to some embodiments of the present application, the bottom wall plate includes a thick plate portion and a thin plate portion, the thickness of the thin plate portion is smaller than that of the thick plate portion, and the chip fixing area is located at the thin plate portion.

[0016] According to some embodiments of the present application, the bottom wall plate and the side wall plate enclose a spacer ring space, a partition is provided in the spacer ring space, and the partition, the side wall plate and the bottom wall plate enclose the chip fixing area.

[0017] According to some embodiments of the present application, the thickness of the partition is in the range of 0.5 mm to 4 mm.

[0018] According to some embodiments of the present application, at least one through hole is provided on the bottom wall plate, and the through hole passes through the bottom wall plate along the thickness direction of the bottom wall plate.

[0019] According to some embodiments of the present application, the length of each of the through holes ranges from 0.5 mm to 8 mm; and / or the width of each of the through holes ranges from 0.3 mm to 5 mm.

[0020] According to some embodiments of the present application, the side wall plate is provided with a lead-out hole for the chip connection wire to pass through, the lead-out hole passes through the side wall plate along the thickness direction of the side wall plate, and the lead-out hole is connected to the chip fixing area.

[0021] According to some embodiments of the present application, the outlet hole is a circular hole, and the aperture range of the outlet hole is 0.1 mm-3 mm.

[0022] According to the battery of the embodiment of the second aspect of the present application, it includes a pole core, a chip assembly and the above-mentioned spacer, the pole core has a pole ear, and the pole ear is suitable for passing through the pole ear socket, the chip assembly includes a chip and a chip connecting wire, the chip is embedded in the chip fixing area and includes a circuit structure and a detection structure, the detection structure is electrically connected to the circuit structure, the chip connecting wire includes a positive electrode member and a negative electrode member, the positive electrode member and the negative electrode member are both electrically connected to the circuit structure, the positive electrode member is suitable for being electrically connected to the positive electrode column of the battery, and the negative electrode member is suitable for being electrically connected to the negative electrode column of the battery.

[0023] According to the battery of the embodiment of the present application, by providing a chip fixing area on the spacer, the chip is conveniently fixed on the spacer, so that the chip and the spacer become a whole, which facilitates the assembly of the battery and realizes the chip being built into the battery.

[0024] According to some embodiments of the present application, the number of the spacers is one or more.

[0025] According to some embodiments of the present application, the battery further includes a first spacer structure, which is connected to the spacer, and the first spacer structure is provided with an original tab insertion hole for the tab to pass through.

[0026] According to some embodiments of the present application, the first spacer structure is clamped and fixed to the spacer.

[0027] According to some embodiments of the present application, the battery further includes a shell body, the spacer or the first spacer structure is suitable for connecting with the shell body, and the pole core is arranged inside the shell body.

[0028] The energy storage device according to the third embodiment of the present application includes the above-mentioned battery.

[0029] According to the energy storage device of the embodiment of the present application, by providing a chip fixing area on the spacer, the chip is conveniently fixed on the spacer, so that the chip and the spacer become a whole, which facilitates the assembly of the battery and realizes the chip being built into the battery.

[0030] The electrical equipment according to the fourth embodiment of the present application includes the above-mentioned energy storage device.

[0031] According to the electrical equipment of the embodiment of the present application, a chip fixing area is provided on the spacer, so that the chip is conveniently fixed on the spacer, so that the chip and the spacer become a whole, which facilitates the assembly of the battery and realizes the chip being built into the battery.

[0032] 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

[0033] FIG1 is a schematic diagram of the exploded structure of a battery cell provided in one embodiment of the present application;

[0034] FIG2 is a schematic diagram of a battery cell structure from one perspective provided in an embodiment of the present application;

[0035] FIG3 is a schematic diagram of a battery cell structure from another perspective provided in one embodiment of the present application;

[0036] FIG4 is a schematic diagram of a battery cell structure before installation provided in one embodiment of the present application;

[0037] FIG5 is a partial enlarged view of a battery cell structure before installation provided in one embodiment of the present application;

[0038] FIG6 is a schematic diagram of a structure of a battery cell from one perspective provided in an embodiment of the present application;

[0039] FIG7 is a schematic diagram of the structure of a battery cell from another perspective provided in one embodiment of the present application;

[0040] FIG8 is a schematic diagram of the structure of a battery cell provided in one embodiment of the present application;

[0041] FIG9 is a schematic diagram of a structure of a battery cell from one perspective provided in an embodiment of the present application;

[0042] FIG10 is a schematic diagram of a partial structure of a battery cell from another perspective provided in one embodiment of the present application;

[0043] FIG11 is a schematic diagram of the structure of a battery cell provided in one embodiment of the present application;

[0044] FIG12 is a schematic diagram of the structure of a battery cell before installation provided in one embodiment of the present application;

[0045] FIG13 is a partial enlarged view of a battery cell structure before installation provided in one embodiment of the present application;

[0046] FIG14 is a partial enlarged view of a battery cell structure before installation provided in one embodiment of the present application;

[0047] FIG15 is a partial cross-sectional schematic diagram of a battery cell provided in one embodiment of the present application;

[0048] FIG16 is a partial cross-sectional schematic diagram of a battery cell provided in one embodiment of the present application;

[0049] FIG17 is a schematic diagram of the structure of a battery cell before installation provided in another embodiment of the present application;

[0050] FIG18 is a schematic diagram of the structure of a battery cell provided in another embodiment of the present application;

[0051] FIG19 is a schematic diagram of the structure of a battery cell before installation provided in another embodiment of the present application;

[0052] FIG20 is a partial enlarged view of a battery cell structure before installation provided in another embodiment of the present application;

[0053] FIG21 is a schematic diagram of the structure of a battery cell provided in another embodiment of the present application;

[0054] FIG22 is a perspective schematic diagram of a spacer according to an embodiment of the present application;

[0055] FIG23 is a bottom view of a spacer according to an embodiment of the present application;

[0056] FIG24 is an exploded schematic diagram of a spacer according to an embodiment of the present application;

[0057] FIG25 is a schematic diagram of a first frame;

[0058] FIG26 is a schematic diagram of a second frame;

[0059] FIG27 is a schematic diagram of a chip assembly mounted on a spacer;

[0060] FIG28 is an exploded schematic diagram of a spacer and a first spacer structure according to an embodiment of the present application;

[0061] FIG29 is a schematic diagram of the assembly of the spacer and the first spacer structure according to an embodiment of the present application;

[0062] FIG30 is a perspective schematic diagram of a portion of a battery structure according to one embodiment of the present application;

[0063] FIG31 is a perspective schematic diagram of a portion of a battery structure according to another embodiment of the present application;

[0064] FIG32 is a front view of the battery shown in FIG31;

[0065] FIG33 is a schematic diagram of an energy storage device according to an embodiment of the present application;

[0066] Figure 34 is a schematic diagram of an electrical device according to an embodiment of the present application.

[0067] The accompanying drawings are as follows: battery cell 100, housing 10, cover assembly 20, first cover assembly 20a, second cover assembly 20b, pole 21, first pole 21a, second pole 21b, lead-out piece 211, first lead-out piece 211a, second lead-out piece 211b, first groove 212a, second groove 212b, body 22, first body 22a, second body 22b, cover spacer 23, first cover spacer 23a, second cover spacer 2 3b, liquid injection port 24, explosion-proof valve 25, first clamping slot 26a, second clamping slot 26b, pole core 30, pole ear 31, first pole ear 31a, second pole ear 31b, spacer 40, first spacer 40a, second spacer 40b, monitoring module 50, side plate 60, first side plate 60a, second side plate 60b, conductive member 70, first conductive member 71, second foil 71a, wire 71b, first foil 71c, second conductive member 72; electrical device 10000, energy storage device 1000, battery 1001, spacer 40, first frame 1, first clamping protrusion 11, First card slot 12, second frame 2, second card protrusion 210, second card slot 220, chip fixing area 3, first half area 310, second half area 320, tab jack 4, bottom wall 5, thick plate portion 51, first thick plate portion 511, second thick plate portion 512, thin plate portion 52, first thin plate portion 521, second thin plate portion 522, side wall plate 6, first side wall plate 61, second side wall plate 62, partition 7, first partition portion 710, second partition portion 720, through hole 8, lead-out hole 9, positive electrode lead-out hole 91, negative electrode lead-out hole 92, chip assembly 200, chip 201, chip connecting line 202, positive electrode part 2021, negative electrode part 2022, first spacer ring structure 300, original frame one 301, original frame two 302, original ear plug hole 304, bottom plate 305, side plate 306, original through hole 308, shell body 400. DETAILED DESCRIPTION

[0068] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0069] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application include direct and indirect connections (couplings) unless otherwise specified. The directional terms mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying 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 the present application.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0071] The present application relates to an electrical device, which includes electrically connected battery cells or battery packs, wherein the battery packs include battery cells and a tray, wherein a plurality of battery cells are arranged in the tray. The battery cells or battery packs are used to power the electrical device.

[0072] Please refer to Figures 1, 2 and 3, wherein Figure 1 illustrates a schematic diagram of the decomposed structure of the battery cell 100 provided in an embodiment of the present application; Figure 2 illustrates a schematic diagram of the structure of the battery cell 100 from one perspective provided in an embodiment of the present application; and Figure 3 illustrates a schematic diagram of the structure of the battery cell 100 from another perspective provided in an embodiment of the present application.

[0073] The battery cell 100 of the present application includes a shell 10, a cover assembly 20, a pole core 30, a spacer 40 and a monitoring module 50. The cover assembly 20 can cover the opening on the shell 10, so that the shell 10 and the cover assembly 20 together form an inner cavity for accommodating the pole core 30. The pole core 30 is fixed in the inner cavity, and the pole core 30 includes a pole ear 31, and the pole ear 31 extends toward the cover assembly 20. A spacer 40 is provided on the side of the pole core 30 facing the cover assembly 20. The pole ear 31 passes through the spacer 40 and is fixedly connected to the cover assembly 20. The battery cell 100 can be electrically connected to the electrical equipment through the pole ear 31 and form a loop to meet the power demand of the electrical equipment.

[0074] Specifically, in one embodiment, as shown in Figure 1, the battery cell 100 includes two cover assemblies 20, two pole ears 31 and two spacers 40, and a pole 21 is respectively provided on the main body 22 of the two cover assemblies 20, and the cover assembly 20, the pole ear 31 and the spacer 40 are arranged on both sides of the pole core 30, and different pole ears 31 extend toward different poles 21. The pole ear 31 passes through the spacer 40 and is electrically connected to the pole 21 on the main body 22. The pole core 30 is conductive to the pole 21 through the pole ear 31, so that the battery cell 100 can supply power to electrical equipment through the pole 21.

[0075] The battery cell 100 of the present application is also provided with a monitoring module 50, which is fixed to the cover assembly 20 or the spacer 40. The monitoring module 50 is electrically connected to the pole ear 31 respectively, so that a loop is formed between the monitoring module 50 and the pole core 30 to realize power supply of the monitoring module 50.

[0076] Specifically, in one embodiment, as shown in FIG1 , the monitoring module 50 is fixed to the cover assembly 20. The cover assembly 20 is provided with a pole 21. The pole 21 is provided with a lead-out tab 211 at one end facing the inner cavity. The lead-out tab 211 is electrically connected between the pole 21 and the tab 31. At the same time, the battery cell 100 is also provided with a conductive member 70. One end of the conductive member 70 extends toward the lead-out tab 211 and is electrically connected to the lead-out tab 211, and the other end is electrically connected to the monitoring module 50, so that the pole core 30 and the monitoring module 50 are electrically connected to each other, thereby realizing power supply to the monitoring module 50.

[0077] The battery cell 100 of the present application is internally provided with a monitoring module 50 for monitoring the performance indicators of the battery cell 100. The monitoring module 50 forms a circuit with the electrode core 30 via the electrode tab 31, and the battery cell 100 supplies power to the monitoring module 50 through the electrode tab 31. The monitoring module 50 can collect and store performance indicators such as gas production, temperature, and pressure within the battery cell 100. It can also wirelessly transmit the collected performance data of the battery cell 100 to other terminals, which can then analyze and process the performance data of the battery cell 100.

[0078] In the prior art, there is no installation position for the monitoring module 50 in the battery cell 100. The monitoring module 50 is difficult to fix in the battery cell 100. The connection strength between the monitoring module 50 and the battery cell 100 is low. As the battery cell 100 is used for a longer time, the monitoring module 50 is more likely to fail. At the same time, due to the compact internal structure of the battery cell 100 and the small available space, it is more difficult to install the monitoring module 50. The monitoring module 50 and its power supply circuit require high-precision installation to ensure that during the subsequent installation of the battery cell 100, other components inside the battery cell 100 will not interfere with the monitoring module 50 and its power supply circuit, thereby protecting the monitoring module 50 and its power supply circuit and reducing the impact of the environment on the monitoring module 50, so that the monitoring module 50 has a better monitoring effect.

[0079] The monitoring module 50 of the battery cell 100 of the present application is fixed to the cover plate assembly 20 or the spacer 40. The monitoring module 50 is pre-integrated with the cover plate assembly 20 or the spacer 40. During the assembly process of the battery cell 100, the monitoring module 50 will be installed in the battery cell 100 along with the installation of the cover plate assembly 20 or the spacer 40, which simplifies the assembly steps of the battery cell 100 and reduces the difficulty of installing the monitoring module 50.

[0080] In addition, since the pole tab 31 is fixedly connected to the cover assembly 20 through the spacer 40, the monitoring module 50 is arranged on the cover assembly 20 or the spacer 40, and the distance between the monitoring module 50 and the pole tab 31 is closer, and it is more convenient to set the power supply line of the monitoring module 50. For example, when the monitoring module 50 is arranged on the cover assembly 20, the power supply line between the monitoring module 50 and the pole 21 can be pre-embedded on the cover assembly 20 or pre-buried in the interior of the cover assembly 20; when the monitoring module 50 is arranged on the spacer 40, the power supply line between the monitoring module 50 and the pole tab 31 can also be pre-embedded on the spacer 40 or pre-buried in the interior of the spacer 40. The above settings can reduce the difficulty of installing the power supply line of the monitoring module 50 and make the power supply line of the monitoring module 50 more reliable.

[0081] It should be noted that the battery cell 100 of the present application can be used in the aforementioned electrical devices or battery packs as a power supply component. However, the battery cell 100 is not limited to use in electrical devices or battery packs. The battery cell 100 of the present application is also applicable to other electrical systems that require power supply and has higher reliability.

[0082] In one embodiment, as shown in FIG. 1 , the cover assembly 20 includes a pole 21 and a body 22 . The pole 21 is embedded in the body 22 , and the tab 31 passes through the spacer 40 and is electrically connected to the pole 21 .

[0083] In one embodiment, the tab 31 passes through the spacer 40 and is fixed to one end of the pole post 21 facing the pole core 30 , so that the pole post 21 is electrically connected to the pole core 30 through the tab 31 .

[0084] In another embodiment, as shown in FIG1 , the pole 21 includes a lead tab 211 located at the end of the pole 21 facing the pole core 30. The tab 31 is fixedly connected to the lead tab 211 on the pole 21. Compared to a cylindrical pole 21, the lead tab 211 has a larger contact surface area. The tab 31 is fixed to the lead tab 211, making the connection between the tab 31 and the pole 21 more reliable. Furthermore, the larger contact area reduces the resistance between the tab and the pole, thereby reducing energy loss during the transmission of electricity through the pole 21 to the power-consuming device.

[0085] In one embodiment, as shown in Figure 1, the battery cell 100 includes a conductive member 70, one end of the conductive member 70 is electrically connected to the monitoring module 50, and the other end is welded to the pole 21, so that the monitoring module 50 is electrically connected to the pole ear 31, thereby realizing power supply to the monitoring module 50.

[0086] In one embodiment, as shown in FIG1 , the pole 21 includes a lead-out tab 211, which electrically connects the pole 21 to the tab 31 via the lead-out tab 211. The conductive member 70 is fixed to the cover assembly 20 and welded to the lead-out tab 211. The conductive member 70 is electrically connected to the tab 31 via the lead-out tab 211. The lead-out tab 211 can increase the contact area between the pole 21 and the conductive member 70, thereby improving the electrical conductivity and connection strength between the pole 21 and the conductive member 70.

[0087] In one embodiment, the battery cell 100 includes a conductive member 70 , one end of which is electrically connected to the monitoring module 50 , and the other end is welded to the tab 31 , so that the monitoring module 50 is electrically connected to the tab 31 , thereby realizing power supply to the monitoring module 50 .

[0088] In one embodiment, the conductive member 70 includes a first conductive member 71 and a second conductive member 72. One end of the first conductive member 71 and the second conductive member 72 are connected to the monitoring module 50, the other end of the first conductive member 71 is connected to the electrode tab 31, and the other end of the second conductive member 72 is connected to the electrode post 21. In one embodiment, as shown in Figures 2 and 3, the battery cell 100 includes two cover plate assemblies 20, namely a first cover plate assembly 20a and a second cover plate assembly 20b. The first body 22a of the first cover plate assembly 20a and the second body 22b of the second cover plate assembly 20b are respectively provided with a first electrode post 21a and a second electrode post 21b.

[0089] In one embodiment, as shown in FIG2 , the first body 22 a is provided with a liquid injection port 24 , which communicates with the inner cavity and is used to inject electrolyte into the inner cavity. In another embodiment, the liquid injection port 24 can also be provided on the second body 22 b or the housing 10 , and the specific position of the liquid injection port 24 can be set according to the position of the battery cell 100 during injection.

[0090] In one embodiment, as shown in Figure 3, the second body 22b is provided with an explosion-proof valve 25, which connects the inner cavity to the outside world. Opening the explosion-proof valve 25 allows gas in the inner cavity to be discharged. During the operation of the battery cell 100, gas is generated. Excessive gas can cause excessive pressure in the inner cavity, thereby affecting the safety of the battery cell 100. In another embodiment, the explosion-proof valve 25 can also be provided on the first body 22a or the housing 10. The specific location of the explosion-proof valve 25 can be set based on the position of the battery cell 100 during liquid injection.

[0091] There are two ways to configure the monitoring module 50 in the battery cell 100. In one embodiment, the monitoring module 50 is fixed to the cover assembly 20; in the other embodiment, the monitoring module 50 is fixed to the spacer 40. Both embodiments allow the monitoring module 50 to be integrated into the battery cell 100, thereby achieving the effect of the monitoring module 50 monitoring the battery cell 100.

[0092] Please refer to Figures 4 and 5 , wherein Figure 4 illustrates a schematic diagram of the structure of a battery cell 100 before installation provided in one embodiment of the present application; and Figure 5 illustrates a partially enlarged view of the structure of a battery cell 100 before installation provided in one embodiment of the present application. In this embodiment, the monitoring module 50 is fixed to the cover plate assembly 20.

[0093] Specifically, as shown in Figures 4 and 5 , the tab 31 is divided into a first tab 31a and a second tab 31b. The first tab 31a is located on the side of the electrode core 30 facing the first body 22a and extends toward the first body 22a. The first tab 31a is fixedly connected to the first lead tab 211a on the first body 22a. The second tab 31b is located on the side of the electrode core 30 facing the second body 22b and extends toward the second body 22b. The second tab 31b is fixedly connected to the second lead tab 211b on the second body 22b, allowing the battery cell 100 to be electrically connected to an electrical device through the electrode 21.

[0094] The monitoring module 50 is mounted on the second main body 22b. The first conductive member 71 is welded to the first pole 21a, and the second conductive member 72 is welded to the second pole 21b. The monitoring module 50 is electrically connected to the first pole 21a via the first conductive member 71 and to the second pole 21b via the second conductive member 72.

[0095] In another embodiment, the monitoring module 50 may also be disposed on the first body 22a. In other embodiments, at least one of the first conductive member 71 and the second conductive member 72 may also be welded to the tab 31, thereby also achieving electrical connection between the monitoring module 50 and the pole core 30.

[0096] In one embodiment, as shown in FIG4 , a receiving groove is provided on the side of the main body 22 facing the inner cavity, and the receiving groove is used to receive and fix the monitoring module 50 and part of the conductive member 70. The receiving groove can improve the reliability of the connection between the monitoring module 50 and the conductive member 70 and the cover assembly 20, and can also facilitate the positioning of the monitoring module 50 and the conductive member 70 during installation.

[0097] In addition, it should be noted that in Figure 4, the cover assembly 20 has not yet been fixedly connected to the housing 10, and the tabs 31 have not yet been folded and are in a straight state. In another embodiment, as shown in Figure 1, the cover assembly 20 is fixedly connected to the housing 10, and the tabs 31 are in a folded state.

[0098] Please refer to Figures 6, 7 and 8, wherein Figure 6 illustrates a schematic diagram of the partial structure of the battery cell 100 from one perspective provided in an embodiment of the present application; Figure 7 illustrates a schematic diagram of the partial structure of the battery cell 100 from another perspective provided in an embodiment of the present application; and Figure 8 illustrates a schematic diagram of the partial structure of the battery cell 100 provided in an embodiment of the present application.

[0099] In one embodiment, the first foil 71 c is welded to the first pole 21 a on the first cover assembly 20 a , so that the first foil 71 c is electrically connected to the first pole 21 a . The first foil 71 c is a part of the first conductive member 71 .

[0100] In another embodiment, as shown in FIG6 and FIG7 , the first foil 71 c is welded to the first lead-out piece 211 a on the first cover plate assembly 20 a , so that the first foil 71 c is electrically connected to the first pole 21 a .

[0101] In one embodiment, the first pole 21a is provided with a first groove 212a, and the first groove 212a at least partially accommodates the first foil 71c. Placing the first foil 71c in the first groove 212a can improve the reliability of the connection between the first foil 71c and the first pole 21a, and also facilitate the positioning of the first foil 71c when welding to the first pole 21a.

[0102] In another embodiment, as shown in FIG. 8 , the first groove 212 a may also be provided on the first lead-out piece 211 a .

[0103] Please refer to Figures 9, 10 and 11, wherein Figure 9 illustrates a schematic diagram of the partial structure of the battery cell 100 from one perspective provided in an embodiment of the present application; Figure 10 illustrates a schematic diagram of the partial structure of the battery cell 100 from another perspective provided in an embodiment of the present application; and Figure 11 illustrates a schematic diagram of the partial structure of the battery cell 100 provided in an embodiment of the present application.

[0104] In one embodiment, the monitoring module 50 is fixed to the second body 22b, one end of the second conductive member 72 is electrically connected to the monitoring module 50, and the other end is welded to the second pole 21b, so that the monitoring module 50 and the second pole 21b are electrically connected.

[0105] In another embodiment, as shown in Figures 9 and 10, the monitoring module 50 is fixed to the second main body 22b, one end of the second conductive member 72 is electrically connected to the monitoring module 50, and the other end is welded to the second lead-out piece 211b, so that the monitoring module 50 is conductive with the second pole 21b.

[0106] In one embodiment, the second pole 21b is provided with a second groove 212b, which at least partially accommodates the second foil 71a. Placing the second foil 71a in the second groove 212b can improve the reliability of the connection between the second foil 71a and the second pole 21b, and also facilitate the positioning of the second foil 71a when welding to the second pole 21b.

[0107] In another embodiment, as shown in FIG. 11 , the second groove 212 b may also be provided on the second lead-out piece 211 b .

[0108] Please refer to Figures 12, 13 and 14, wherein Figure 12 illustrates a partial structural schematic diagram of the battery cell 100 before installation provided in an embodiment of the present application; Figure 13 illustrates a partial enlarged view of the structure of the battery cell 100 before installation provided in an embodiment of the present application; and Figure 14 illustrates a partial enlarged view of the structure of the battery cell 100 before installation provided in an embodiment of the present application.

[0109] In one embodiment, the battery cell 100 includes a cover assembly 20, two poles 21 are provided on the cover assembly 20, and the pole core 30 includes two pole ears 31. The two pole ears 31 are both located on the side of the pole core 30 facing the cover assembly 20 and extend toward the cover assembly 20. The two pole ears 31 are electrically connected to different poles 21 respectively.

[0110] In one embodiment, as shown in FIG12 , there are two cover plate assemblies 20, and the two cover plate assemblies 20 are arranged on both sides of the pole core 30, that is, the first cover plate assembly 20a and the second cover plate assembly 20b are located on both sides of the pole core 30. A spacer 40 is fixed between the cover plate assembly 20 and the pole core 30, that is, a first spacer 40a is provided between the first cover plate assembly 20a and the pole core 30, and a second spacer 40b is provided between the second cover plate assembly 20b and the pole core 30.

[0111] In one embodiment, the battery cell 100 includes a side plate 60 , which is connected between the first spacer 40 a and the second spacer 40 b .

[0112] In one embodiment, the side plate 60 includes a first side plate 60 a and a second side plate 60 b , and the first side plate 60 a and the second side plate 60 b are respectively located on both sides of the pole core 30 .

[0113] In some embodiments, the conductive member 70 is at least partially embedded or preset inside the first side plate 60 a.

[0114] In one embodiment, as shown in FIG1 , a wire 71 b is embedded in the first side plate 60 a , with two ends of the wire 71 b extending toward the first spacer 40 a and the second spacer 40 b , respectively.

[0115] In this embodiment, the wire 71b is embedded in the first side plate 60a. The first side plate 60a and the wire 71b are integrated into one component, eliminating the need to arrange the wire 71b in the inner cavity. Furthermore, when the housing 10 is installed, the wire 71b disposed in the first side plate 60 is less likely to come into contact with the housing 10, thereby preventing breakage of the wire 71b due to contact with the housing 10. Furthermore, this prevents displacement of the wire 71b after the electrolyte is injected into the battery cell 100.

[0116] In another embodiment, the wire 71 b may also be embedded in the second side plate 60 b to protect the conductive member 70 .

[0117] In other embodiments, the conductive member 70 may be partially embedded or preset inside the first side plate 60 a and the second side plate 60 b , which can also protect the conductive member 70 .

[0118] In one embodiment, there may be multiple first side plates 60a and second side plates 60b, and the wires 71b on multiple first side plates 60a can all enable the monitoring module 50 located on the spacers 40 on both sides of the pole core 30 or the cover plate assembly 20 to be electrically connected to the pole core 30.

[0119] In one embodiment, as shown in FIG13 , the first body 22a includes a first foil 71c fixed to the side of the first body 22a facing the inner cavity. The first foil 71c is electrically connected to the monitoring module 50 and the end of the wire 71b facing the first body 22a.

[0120] In one embodiment, as shown in Figure 14, the second body 22b includes a second foil 71a, which is fixed to the side of the second body 22b facing the inner cavity. One end of the second foil 71a is electrically connected to the monitoring module 50, and the other end is welded to the end of the wire 71b facing the second body 22b.

[0121] In one embodiment, as shown in Figures 12 to 14, the first foil 71c, the wire 71b and the second foil 71a are electrically connected in sequence to form a first conductive member 71, and the first conductive member 71 is electrically connected to the monitoring module 50 and the first lead-out piece 211a of the first pole 21a.

[0122] In other embodiments, the first conductive member 71 includes at least one of a first foil 71c, a wire 71b, and a second foil 71a. For example, the first conductive member 71 includes a wire 71b, one end of which is electrically connected to the monitoring module 50 and the other end of which is welded to the terminal tab 31 or the terminal post 21, thereby electrically connecting the monitoring module 50 to the terminal core 30.

[0123] In other embodiments, the first foil 71c, the conductive wire 71b, and the second foil 71a may all be in a foil-shaped or wire-shaped shape or other shapes that can form an electrical connection.

[0124] Please refer to Figures 15 and 16, wherein Figure 15 illustrates a partial cross-sectional schematic diagram of a battery cell 100 provided in an embodiment of the present application; Figure 16 illustrates a partial cross-sectional schematic diagram of a battery cell 100 provided in an embodiment of the present application.

[0125] In one embodiment, as shown in Figure 1, the cover plate 20 includes a cover plate spacer 23, which is located on the side of the main body 22 facing the inner cavity. The cover plate spacer 23 can separate the main body 22 from the pole core 30 in the inner cavity, preventing the pole core 30 from directly contacting the main body 22 of the cover plate 20.

[0126] In one embodiment, as shown in Figure 15, the first main body 22a is provided with a first cover spacer 23a on the side facing the inner cavity. The first cover spacer 23a includes a first card slot 26a facing the side facing the inner cavity. The first card slot 26a can fix and accommodate part of the wire 71b to prevent the wire 71b from moving in the inner cavity and prevent the wire 71b from contacting other components in the battery cell 100 and causing the wire 71b to break.

[0127] In another embodiment, as shown in Figure 16, the second main body 22b is provided with a second cover spacer 23b on the side facing the inner cavity. The second cover spacer 23b includes a second card slot 26b facing the side facing the inner cavity. The second card slot 26b can also fix and accommodate part of the wire 71b, which can also prevent the wire 71b from moving in the inner cavity or contacting other components in the battery cell 100 and causing breakage.

[0128] Please refer to Figures 17 and 18. Figure 17 illustrates a schematic diagram of the structure of a battery cell 100 before installation in another embodiment of the present application; Figure 18 illustrates a schematic diagram of a portion of the structure of a battery cell 100 in another embodiment of the present application. In this embodiment, the monitoring module 50 is fixed to the spacer 40.

[0129] Specifically, as shown in Figure 17, the tab 31 is divided into a first tab 31a and a second tab 31b. The first tab 31a and the second tab 31b respectively pass through the first spacer 40a and the second spacer 40b and are electrically connected to the first pole 21a and the second pole 21b. Please refer to Figures 19, 20, and 21, wherein Figure 19 is a schematic diagram of the partial structure of the battery cell 100 before installation provided in another embodiment of the present application; Figure 20 is a partial enlarged view of the structure of the battery cell 100 before installation provided in another embodiment of the present application; and Figure 21 is a schematic diagram of the partial structure of the battery cell 100 provided in another embodiment of the present application.

[0130] In one embodiment, the spacer 40 includes a hollow area, one end of the conductive member 70 passes through the hollow area and is welded to the pole ear 31 , and the other end is electrically connected to the monitoring module 50 , so that the monitoring module 50 and the pole core 30 are conductive.

[0131] In another embodiment, the conductive member 70 is embedded in the spacer 40 , one end of the conductive member 70 is welded to the tab 31 , and the other end is electrically connected to the monitoring module 50 , so that the monitoring module 50 and the electrode core 30 are electrically connected.

[0132] In one embodiment, as shown in FIG19 , the monitoring module 50 is fixed to the second spacer 40 b, the first conductive member 71 is welded to the first pole 21 a, and the second conductive member 72 is welded to the second tab 31 b. The monitoring module 50 is electrically connected to the first pole 21 a via the first conductive member 71 and to the second tab 31 b via the second conductive member 72.

[0133] In another embodiment, the monitoring module 50 may also be fixed on the first spacer 40a.

[0134] In another embodiment, the first conductive member 71 and the second conductive member 72 can be welded to the pole tab 31 or the pole post 21 , which can also achieve electrical conduction between the monitoring module 50 and the pole core 30 .

[0135] In the above specific embodiments, various methods of disposing the conductive member 70 are used to make the monitoring module 50 and the pole core 30 conductive, so as to achieve normal operation of the monitoring module 50 .

[0136] In one embodiment, the spacer 40 is provided with a buckle, and the monitoring module 50 is snap-connected to the spacer 40 .

[0137] In one embodiment, as shown in Figures 20 and 21, the second spacer 40b is provided with a female buckle of a snap buckle, and the monitoring module 50 is provided with a male buckle of a snap buckle. The monitoring module 50 cooperates with the second spacer 40b so that the monitoring module 50 is fixed on the second spacer 40b.

[0138] In another embodiment, the female buckle of the buckle can be set on the monitoring module 50, and the male buckle of the buckle can be set on the second spacer 40b.

[0139] In one embodiment, the monitoring module 50 includes a packaging body, in which the monitoring module 50 is packaged. The packaging body at least partially wraps the monitoring module 50. The packaging body is provided with a snap-fit ​​structure, and the monitoring module 50 is fixedly connected to the spacer 40 through the snap-fit ​​structure of the packaging body.

[0140] In one embodiment, as shown in Figures 20 and 21, one end of the second conductive member 72 is electrically connected to the monitoring module 50, and the other end passes through the hollow area of ​​the second spacer ring 40b and is welded to the second pole ear 31b, so that the monitoring module 50 is electrically connected to the second pole ear 31b.

[0141] In one embodiment, as shown in Figures 20 and 21, a second foil 71a is fixed to the second spacer 40b. One end of the second foil 71a is welded to a wire 71b, and the other end is electrically connected to the monitoring module 50. The wire 71b is electrically connected to the first lead-out piece 211a through the first foil 71c of the first cover assembly 20a, thereby electrically connecting the monitoring module 50 to the first pole 21a, thereby achieving electrical continuity between the monitoring module 50 and the pole core 30.

[0142] The specific development of each of the above embodiments can make the monitoring module 50 and the pole core 30 conductive, and the battery cell 100 can also provide power to the monitoring module 50 when working, ensuring the normal operation of the monitoring module 50.

[0143] In one embodiment, the monitoring module 50 is provided with an inductive conductive tape, which is inserted into the interior of the pole core 30 and electrically connected to the pole core 30. The monitoring module can obtain data of the pole core 30 through the inductive conductive tape, and then monitor the performance data of the battery cell 100.

[0144] In some embodiments, the monitoring module 50 includes one or more of a chip, a processor, and an integrated circuit, so that the monitoring module 50 can monitor and store performance parameters of the battery cell 100 and can also send the stored parameters to other receiving terminals.

[0145] In one embodiment, there are multiple monitoring modules 50, and multiple monitoring modules 50 can be set on the cover assembly 20 or the spacer 40 at the same time, or a certain number of monitoring modules 50 can be set on the cover assembly 20, and a certain number of monitoring modules 50 can be set on the spacer 40.

[0146] In one embodiment, the first pole 21a and the first foil 71c, the first foil 71c and the wire 71b, the wire 71b and the second foil 71a, the second conductive member 72 and the second pole 21b or the second conductive member 72 and the second tab 31b are all welded to achieve fixation of the two components.

[0147] In a preferred embodiment, ultrasonic welding is used to weld the components within the battery cell 100. Soldering is typically used to weld components within the battery cell 100. However, due to the presence of electrolyte within the internal cavity, corrosion-resistant adhesive must be applied to the solder joints to protect them. Furthermore, the curing of the corrosion-resistant adhesive takes a long time, which increases the number of assembly steps and the time required to assemble the battery cell 100. Using ultrasonic welding can reduce the time required to assemble the battery cell 100.

[0148] In one embodiment, the conductive member 70 includes a laser welding portion, which is fixedly connected to the pole 21 or the pole lug 31, so that the monitoring module 50 is electrically connected to the pole core 30 through the laser welding portion. In this embodiment, laser welding is used to weld the internal components of the battery cell 100. In a preferred embodiment, the pole 21 is welded to the main body 22, and the conductive member 70 can be welded simultaneously during the welding process of the pole 21. For example, during the process of welding the first pole 21a to the first main body 22a, the first foil 71c can also be simultaneously welded to the first lead-out piece 211a of the first pole 21a; during the process of welding the second pole 21b to the second main body 22b, the second conductive member 72 can also be simultaneously welded to the second lead-out piece 211b of the second pole 21b. This operation can reduce the risk of damage to the monitoring module 50 and the conductive member 70 during transportation and assembly.

[0149] In a preferred embodiment, the battery cell 100 includes a positive electrode tab 31 and a negative electrode post 21 . The positive electrode tab 31 and the negative electrode post 21 are made of aluminum, and the negative electrode tab 31 and the negative electrode post 21 are made of nickel-plated copper.

[0150] In a preferred embodiment, the conductive member 70 is welded to the tab 31 or the pole post 21 serving as the positive electrode and the negative electrode, respectively. When the conductive member 70 is welded to the tab 31 or the pole post 21 serving as the positive electrode, the material of the conductive member 70 is the same as that of the tab 31 or the pole post 21 serving as the positive electrode; when the conductive member 70 is welded to the tab 31 or the pole post 21 serving as the negative electrode, the material of the conductive member 70 is the same as that of the tab 31 or the pole post 21 serving as the negative electrode.

[0151] In a preferred embodiment, the conductive member 70 welded to the positive electrode is made of aluminum, and the conductive member 70 welded to the negative electrode is made of nickel-plated copper.

[0152] The spacer 40 , the battery 1001 , the energy storage device 1000 and the electrical device 10000 according to an embodiment of the present application are described in detail below with reference to FIG. 22 to FIG. 34 .

[0153] As shown in Figures 22 and 28, the spacer 40 according to an embodiment of the present application is provided with a chip fixing area 3 and a tab insertion hole 4. The chip fixing area 3 is used to fix the chip 201, and the tab insertion hole 4 is used to allow the tab to pass through. The chip fixing area 3 and the tab insertion hole 4 are separated. By providing the chip fixing area 3, the spacer 40 can be used to fix the chip 201, so that the chip 201 and the spacer 40 form an assembly, which is convenient for installation in the battery 1001. The position of the chip 201 in the battery 1001 is fixed, preventing the chip 201 from shaking and causing damage. The tab insertion hole 4 allows the spacer 40 to fix the tab of the battery core, reducing the shaking of the tab within the battery 1001. The chip fixing area 3 and the tab insertion hole 4 are separated, thereby ensuring that the fixed position of the chip 201 on the spacer 40 is separated from the position of the tab on the spacer 40, and the chip 201 and the tab do not interfere with each other.

[0154] According to the spacer 40 of the embodiment of the present application, by providing the chip fixing area 3 on the spacer 40, it is convenient to fix the chip 201 on the spacer 40, so that the chip 201 and the spacer 40 become a whole, which is convenient for the subsequent assembly of the battery 1001. Specifically, the chip 201 and the spacer 40 form an integrated smart chip built-in spacer structure, the chip 201 is built into the spacer 40, and the chip 201 and the spacer 40 are connected to form a whole, and the structure is stable. The chip 201 can be used to monitor the real-time changes of signals such as temperature and air pressure. Applying this integrated smart chip built-in spacer structure to the battery 1001 can not only play the role of the spacer in fixing the pole ear, but also effectively monitor the real-time changes of signals such as temperature and air pressure inside the battery 1001, thereby further improving the safety of the power battery 1001. At the same time, the chip 201 can be built into the interior of the battery 1001, making the monitoring results more accurate and reliable.

[0155] In addition, the tab jack 4 and the chip 201 are fixedly arranged on the spacer 40. In this way, the spacer 40 can not only fix the tab, but also fix the chip 201, making it convenient for the chip 201 to monitor the core temperature, air pressure and other signals, and can improve the accuracy of early warning of abnormal signals. By implanting the chip 201 inside the battery 1001, the health status inside each battery 1001 can be monitored in real time, thereby further improving the safety of the power battery. However, the internal space of the battery 1001 is limited, and the chip 201 needs to be introduced without affecting other structures. The present application cleverly designs the spacer 40 to facilitate the implantation of the chip 201, thereby achieving the purpose of real-time monitoring of the health status inside the battery 1001.

[0156] In some embodiments of the present application, each spacer 40 is constructed as a split structure. Specifically, each spacer 40 includes a plurality of frames, and the plurality of frames are connected.

[0157] In some embodiments of the present application, as shown in Figures 22 to 28, the spacer 40 includes a first frame 1 and a second frame 2, the first frame 1 and the second frame 2 are connected, the tab socket 4 is formed between the first frame 1 and the second frame 2, and the chip fixing area 3 includes a first half area 310 and a second half area 320, the first half area 310 is set in the first frame 1, and the second half area 320 is set in the second frame 2. Specifically, the battery 1001 includes a shell body 400, which has a core inside. The core has a tab. After the first frame 1 and the second frame 2 are connected, a tab insertion hole 4 is formed between the first frame 1 and the second frame 2. In this way, when assembling the battery 1001, the core can be placed inside the shell body 400 first, and then the first frame 1 and the second frame 2 are connected. As a result, the first frame 1 and the second frame 2 clamp the tab from both sides of the tab, without having to insert the tab from the bottom up into the tab insertion hole 4. This can prevent the tab from being scratched when the tab is inserted from the bottom up into the tab insertion hole 4. The split structure of the spacer 40 makes the assembly operation of the tab and the spacer 40 simpler, simplifies the assembly process, saves assembly time, and at the same time, the tab is not easily scratched, which is conducive to increasing the service life of the tab. In addition, the chip fixing area 3 is formed on both the first frame 1 and the second frame 2, so that the first frame 1 and the second frame 2 are both used to fix the chip 201. In some embodiments, the chip 201 can also serve to connect the first frame 1 and the second frame 2, thereby making the overall structure formed by the chip 201 and the spacer 40 more secure.

[0158] In some embodiments of the present application, the first frame 1 and the second frame 2 are snap-fitted and fixed, and the snap-fitting portion of the first frame 1 and the second frame 2 is spaced apart from the tab socket 4. In this way, the setting position of the tab socket 4 does not affect the snap-fitting and fixing operation of the first frame 1 and the second frame 2.

[0159] In some embodiments of the present application, one of the first frame 1 and the second frame 2 is provided with a snap-fit ​​protrusion, and the other is provided with a snap-fit ​​groove, and the snap-fit ​​protrusion is snap-fitted with the snap-fit ​​groove, thereby achieving snap-fit ​​fixation of the first frame 1 and the second frame 2. The snap-fit ​​fixation method makes it easy to assemble and disassemble the first frame 1 and the second frame 2, thereby facilitating the first frame 1 and the second frame 2 to clamp the tab from both sides of the tab, and also facilitating the first frame 1 and the second frame 2 to be removed from both sides of the tab. The snap-fit ​​protrusion and the snap-fit ​​groove are designed on both sides of the two frames, which is conducive to improving the snap-fit ​​firmness of the first frame 1 and the second frame 2.

[0160] In some embodiments of the present application, the shape of the snap-fit ​​protrusion may be cylindrical, triangular, polygonal, or the like, and the shape of the snap-fit ​​groove is adjusted and designed according to the shape of the snap-fit ​​protrusion.

[0161] 24-26 , the first frame body 1 is provided with a first engaging protrusion 11 and a first engaging slot 12, and the second frame body 2 is provided with a second engaging protrusion 210 and a second engaging slot 220. The first engaging protrusion 11 is adapted to be engaged and fixed with the second engaging slot 220, and the second engaging protrusion 210 is adapted to be engaged and fixed with the first engaging slot 12. The number of the first engaging protrusions 11 and the second engaging slot 220 is the same, and the positions of the first engaging protrusions 11 correspond one-to-one with the positions of the second engaging slot 220. The number of the second engaging protrusions 210 and the first engaging slot 12 is the same, and the positions of the second engaging protrusions 210 correspond one-to-one with the positions of the first engaging slot 12.

[0162] In some embodiments of the present application, the spacer 40 includes a bottom wall plate 5 and a side wall plate 6. The side wall plate 6 is disposed around the outer periphery of the bottom wall plate 5 and extends at least toward a first side of the bottom wall plate 5. The chip fixing area 3 is located on the first side of the bottom wall plate 5, and the tab receptacle 4 is formed in the bottom wall plate 5. Referring to FIG. 22 , the first side of the bottom wall plate 5 is the F1 side. The side wall plate 6 extends toward the F1 side of the bottom wall plate 5 and helps to enclose the chip fixing area 3. In embodiments not shown in the figure, the side wall plate 6 may extend toward the F2 side of the bottom wall plate 5 in addition to the F1 side of the bottom wall plate 5. F2 and F1 are in opposite directions.

[0163] 22 and 24-25, the first frame 1 includes a first bottom wall panel and a first side wall panel 61. The first side wall panel 61 extends toward the first side of the first bottom wall panel, and the first half region 310 is located on the first side of the first bottom wall panel. In conjunction with FIG22, FIG24, and FIG26, the second frame 2 includes a second bottom wall panel and a second side wall panel 62. The second side wall panel 62 extends toward the first side of the second bottom wall panel, and the second half region 320 is located on the first side of the second bottom wall panel.

[0164] In some embodiments of the present application, the bottom wall plate 5 includes a thick plate portion 51 and a thin plate portion 52. The thickness of the thin plate portion 52 is less than that of the thick plate portion 51. The chip fixing area 3 is located at the thin plate portion 52. Referring to Figures 24-26, the thick plate portion 51 includes a first thick plate portion 511 and a second thick plate portion 512, and the thin plate portion 52 includes a first thin plate portion 521 and a second thin plate portion 522. Specifically, the first frame body 1 includes a first thick plate portion 511 and a first thin plate portion 521. The thickness H2 of the first thin plate portion 521 is less than the thickness H1 of the first thick plate portion 511, that is, H2 < H1. The first half area 310 is located on the F1 side of the first thin plate portion 521. The second frame 2 includes a second thick plate portion 512 and a second thin plate portion 522. The thickness H4 of the second thin plate portion 522 is less than the thickness H3 of the second thick plate portion 512, i.e., H4 < H3. The second half region 320 is located on the F1 side of the second thin plate portion 522. By setting the thickness of the thin plate portion 52 to be less than that of the thick plate portion 51, sufficient space is provided for the chip 201, thereby reducing the overall thickness of the integrated smart chip built-in spacer structure.

[0165] In some embodiments of the present application, the thickness of the thin plate portion 52 ranges from 0.05 mm to 3 mm. For example, the thickness of the thin plate portion 52 can be 0.05 mm, 0.1 mm, 0.3 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. Of course, the thickness of the thin plate portion 52 can also be other values ​​between 0.05 mm and 3 mm, which are not listed here. The thickness of the first thin plate portion 521 and the second thin plate portion 522 both range from 0.05 mm to 3 mm, i.e., 0.05 mm ≤ H2 ≤ 3 mm, and 0.05 mm ≤ H4 ≤ 3 mm.

[0166] In some embodiments of the present application, as shown in Figures 22, 24, and 27, the bottom wall plate 5 and the side wall plate 6 enclose a spacer ring, within which a partition plate 7 is disposed. The partition plate 7 is connected and fixed to the bottom wall plate 5, and the partition plate 7, the side wall plate 6, and the bottom wall plate 5 enclose a chip fixing area 3. The partition plate 7 and the side wall plate 6 are used to define the position of the chip fixing area 3 on the bottom wall plate 5, thereby defining the position of the chip 201 on the bottom wall plate 5, preventing the chip 201 from crossing the partition plate 7 and reaching other positions on the bottom wall plate 5, thereby preventing the chip 201 from interfering with other components corresponding to the bottom wall plate 5.

[0167] In some embodiments of the present application, the thick plate portion 51 and the thin plate portion 52 are separated at the partition 7. In other words, the thick plate portion 51 and the thin plate portion 52 are located on both sides of the partition 7.

[0168] 22 and 24-27, the partition 7 includes a first partition portion 710 and a second partition portion 720, the first frame 1 includes a first partition portion 710, a first bottom wall plate and a first side wall plate 61, the first bottom wall plate and the first side wall plate 61 enclose a first partition space, the first partition portion 710 is arranged in the first partition space, the first partition portion 710 is connected and fixed to the first bottom wall plate, and the first partition portion 710, the first bottom wall plate and the first side wall plate 61 enclose a first half area 310. The second frame 2 includes a second partition portion 720, a second bottom wall plate and a second side wall plate 62. The second bottom wall plate and the second side wall plate 62 enclose a second partition space. The second partition portion 720 is arranged in the second partition space. The second partition portion 720 is connected and fixed to the second bottom wall plate. The second partition portion 720, the second bottom wall plate and the second side wall plate 62 enclose a second half area 320. The second half area 320 is connected to the first half area 310 to jointly form a chip fixing area 3.

[0169] In some embodiments of the present application, the thickness of the partition 7 ranges from 0.5 mm to 4 mm. For example, the thickness of the partition 7 can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, or 4 mm. Of course, the thickness of the partition 7 can also be other values ​​between 0.5 mm and 4 mm, which are not listed here. The thickness of the first partition portion 710 and the second partition portion 720 both ranges from 0.5 mm to 4 mm.

[0170] In some embodiments of the present application, at least one through hole 8 is provided on the bottom wall plate 5, and the through hole 8 passes through the bottom wall plate 5 along the thickness direction of the bottom wall plate 5. After the spacer 40 is relatively fixed to the shell body 400, the through hole 8 can balance the air pressure inside and outside the shell body 400, so that when the electrolyte is injected into the shell body 400, the electrolyte flows smoothly. Secondly, the provision of the through hole 8 is also conducive to the gas generated inside the battery 1001 to diffuse outward through the through hole 8. The number of through holes 8 opened can be designed and adjusted according to the size of the through hole 8. In the example of Figure 24, the number of through holes 8 on the first frame 1 is 5, and the number of through holes 8 on the second frame 2 is 5.

[0171] It can be understood that "the spacer 40 is relatively fixed to the shell body 400" can mean that the spacer 40 is directly fixedly installed on the shell body 400, as shown in Figure 30; or the spacer 40 is indirectly fixedly installed on the shell body 400 through other components. As shown in Figures 31-32, the battery 1001 also includes a first spacer structure 300, the spacer 40 is installed on the first spacer structure 300, and the first spacer structure 300 is installed on the shell body 400, that is, the spacer 40 is indirectly fixedly installed on the shell body 400 through the first spacer structure 300.

[0172] In some embodiments of the present application, the shape of the through hole 8 can be circular, rectangular, square, etc.

[0173] In some embodiments of the present application, the length of each through hole 8 ranges from 0.5 mm to 8 mm; and / or the width of each through hole 8 ranges from 0.3 mm to 5 mm. For example, the length of each through hole 8 can be 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, or 8 mm. Of course, the length of each through hole 8 can also be other values ​​between 0.5 mm and 8 mm, which are not listed here. The width of each through hole 8 can be 0.3 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, or 5 mm. Of course, the width of each through hole 8 can also be other values ​​between 0.3 mm and 5 mm, which are not listed here.

[0174] In other words, the size of the through hole 8 in the first direction ranges from 0.5 mm to 8 mm, and / or the size of the through hole 8 in the second direction ranges from 0.3 mm to 5 mm. The first direction and the second direction are perpendicular to each other.

[0175] In some embodiments of the present application, the shape of the through hole 8 can be rectangular, square, triangular, circular, etc. When the through hole 8 is circular, the length and width of the through hole 8 are equal, that is, the diameter of the through hole 8. When the through hole 8 is square, the length and width of the through hole 8 are equal.

[0176] In some embodiments of the present application, the side wall plate 6 is provided with an extraction hole 9 for the chip connection wire 202 to pass through. The extraction hole 9 penetrates the side wall plate 6 along the thickness direction of the side wall plate 6 and is connected to the chip fixing area 3. The extraction hole 9 includes a first extraction hole 91 and a second extraction hole 92. The first extraction hole 91 is provided on the first side wall plate 61 of the first frame body 1, and the second extraction hole 92 is provided on the second side wall plate 62 of the second frame body 2. The chip connection wire 202 includes a positive electrode member 2021 and a negative electrode member 2022. The first extraction hole 91 is used to pass the positive electrode member 2021 through, and the second extraction hole 92 is used to pass the negative electrode member 2022 through. The extraction hole 9 can limit and fix the chip connection wire 202, preventing the chip connection wire 202 from shaking and being damaged.

[0177] In some embodiments of the present application, the lead-out hole 9 is a circular hole, and the diameter of the lead-out hole 9 ranges from 0.1 mm to 3 mm. For example, the diameter of the lead-out hole 9 can be 0.1 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. Of course, the diameter of the lead-out hole 9 can also be other values ​​between 0.1 mm and 3 mm, which are not listed here.

[0178] In some embodiments of the present application, the length of the lead-out hole 9 ranges from 0.1mm to 3mm; and / or the width of the lead-out hole 9 ranges from 0.1mm to 2.5mm. For example, the length of the lead-out hole 9 can be 0.1mm, 0.4mm, 0.5mm, 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, or 3mm. Of course, the length of the lead-out hole 9 can also be other values ​​between 0.1mm and 3mm, which are not listed here. The width of the lead-out hole 9 can be 0.1mm, 0.4mm, 0.5mm, 0.8mm, 1mm, 1.5mm, 2mm, or 2.5mm. Of course, the width of the lead-out hole 9 can also be other values ​​between 0.1mm and 2.5mm, which are not listed here.

[0179] In other words, the size of the lead-out hole 9 in the third direction ranges from 0.1 mm to 3 mm, and / or the size of the lead-out hole 9 in the fourth direction ranges from 0.1 mm to 2.5 mm. The third direction and the fourth direction are perpendicular to each other.

[0180] In some embodiments of the present application, the shape of the lead-out hole 9 can be rectangular, square, triangular, circular, etc. When the lead-out hole 9 is circular, the length and width of the lead-out hole 9 are equal, that is, the diameter of the lead-out hole 9. When the lead-out hole 9 is square, the length and width of the lead-out hole 9 are equal.

[0181] According to the integrated smart chip built-in spacer structure of the embodiment of the present application, the optional structure of the spacer 40 that needs to have the built-in chip 201 is clarified. The placement position of the chip 201 in the spacer 40 is specified, and the design and shape of the placement position are explained. In addition, a position for the positive electrode 2021 and the negative electrode 2022 of the chip 201 to be led out is reserved on one side of the spacer 40, so that the positive electrode 2021 of the chip 201 is connected to the positive electrode inside the battery 1001, and the negative electrode 2022 is connected to the negative electrode inside the battery 1001, so that the pole core of the battery 1001 supplies power to the chip 201, so that the chip 201 can continuously and effectively play a monitoring role. The design of the integrated smart chip built-in spacer structure avoids affecting the changes of other components of the battery 1001 when the chip 201 is introduced, and the placement of the chip 201 inside the spacer 40 can effectively avoid the occurrence of situations such as the chip 201 being squeezed and deformed.

[0182] 30-32 , a battery 1001 according to an embodiment of the second aspect of the present application includes a pole core, a chip assembly 200 and a spacer 40 of the above embodiment, the pole core having a pole ear, the pole ear being suitable for passing through the pole ear socket, the chip assembly 200 including a chip 201 and a chip connection line 202, the chip 201 being embedded in the chip fixing area 3, and the chip 201 including a circuit structure and a detection structure, the detection structure being electrically connected to the circuit structure, the chip connection line 202 including a positive electrode member 2021 and a negative electrode member 2022, both the positive electrode member 2021 and the negative electrode member 2022 being electrically connected to the circuit structure, the positive electrode member 2021 being suitable for being electrically connected to the positive pole post of the battery 1001, and the negative electrode member 2022 being suitable for being electrically connected to the negative pole post of the battery 1001.

[0183] The spacer 40 is provided with a positive electrode lead-out hole 911 and a negative electrode lead-out hole 922. The positive electrode member 2021 passes through the positive electrode lead-out hole 911, and the negative electrode member 2022 passes through the negative electrode lead-out hole 922. The positive electrode member 2021 is pulled back to the positive side of the battery 1001 and connected to the positive electrode post. The connection method can be spot welding, laser welding or brazing. Similarly, the negative electrode member 2022 is pulled back to the negative side of the battery 1001 and connected to the negative electrode post. The connection method can be spot welding, laser welding or brazing. In this way, the chip 201 can be continuously powered by the internal pole core itself, so that the chip 201 can continue to effectively perform its monitoring function. The current required by the chip 201 itself is between 1μA and 25μA, which is a small current. Therefore, the impact of the chip 201 itself on the pole core can be ignored. Furthermore, to prevent the electrolyte in battery 1001 from corroding chip 201, chip connection wires 202, and the connection points between chip 201 and chip connection wires 202, an insulating anti-corrosion film is required to be applied to the surfaces of these components. This insulating anti-corrosion film is primarily composed of a composite of materials such as polyimide, polypropylene, and polyethylene, and has a thickness ranging from 10 μm to 200 μm. For example, the thickness of the insulating anti-corrosion film is 10 μm, 50 μm, 100 μm, 150 μm, or 200 μm.

[0184] In some embodiments, the battery 1001 described in the present application can be a blade-shaped battery. For example, the length of the blade-shaped battery can range from 400mm to 700mm to form a short blade battery; for another example, the length of the blade-shaped battery can be greater than 700mm to form a long blade battery. The battery 1001 can also be a cylindrical battery, a square battery, or a soft-pack battery. The integrated smart chip built-in spacer structure is also applicable to these batteries 1001, but according to different battery 1001 structures, the position of the chip fixing area 3 for the built-in chip 201 in the spacer 40 needs to be adjusted and modified accordingly.

[0185] In some embodiments of the present application, the number of chip components 30 inside the battery 1001 may be one or more.

[0186] According to the battery 1001 of the embodiment of the present application, by providing a chip fixing area 3 on the spacer 40, it is convenient to fix the chip 201 on the spacer 40, so that the chip 201 and the spacer 40 become a whole, which facilitates the assembly of the battery 1001. The number of chip fixing areas 3 on each spacer 40 can be one or more. The types of chips 201 in different chip fixing areas 3 can be the same or different. For example, the chips 201 in different chip fixing areas 3 can all be temperature monitoring chips, or they can be a combination of chips 201 such as a temperature monitoring chip, an air pressure monitoring chip, a humidity monitoring chip, and a gas monitoring chip.

[0187] In some embodiments of the present application, there are one or more spacers 40. For example, in the examples shown in Figures 30-32, there is one spacer 40. In some embodiments not shown in the figures, there can be multiple spacers 40. Multiple spacers 40 can effectively fix the tabs and prevent the tabs from deforming. Each spacer 40 has a built-in chip 201. The chips 201 on different spacers 40 can be used to monitor the same signal or different signals. For example, the chip 201 on one spacer 40 is used to monitor the temperature signal, and the chip 201 on another spacer 40 is used to monitor the air pressure signal, thereby achieving the purpose of simultaneously monitoring the internal temperature and air pressure signals of the battery 1001. The areas and positions of the two spacers 40 for placing the chips 201 can be adjusted and designed accordingly according to the testing requirements of the battery 1001.

[0188] In some embodiments of the present application, as shown in Figure 30, the battery 1001 includes a cover assembly 20, a spacer 40, and a shell body 400. The spacer 40 is connected to the shell body 400, and the spacer 40 is also connected to the cover assembly 20.

[0189] In some embodiments of the present application, as shown in Figures 31 and 32, the battery 1001 further includes a first spacer structure 300, which is connected to the spacer 40 and has a tab insertion hole 304 for the tab to pass through. The multiple spacer structures can effectively secure the tabs and prevent them from deformation.

[0190] In some embodiments of the present application, as shown in FIG29 , the first spacer structure 300 is fixedly engaged with the spacer 40. For example, one of the first spacer structure 300 and the spacer 40 is provided with a snap-fit ​​protrusion, and the other is provided with a snap-fit ​​groove, and the snap-fit ​​protrusion snap-fits with the snap-fit ​​groove, thereby achieving the snap-fitting of the first spacer structure 300 and the spacer 40.

[0191] In some embodiments of the present application, the battery 1001 further includes a shell body 400 , and the spacer 40 or the first spacer structure 300 is suitable for connecting with the shell body 400 .

[0192] In some embodiments of the present application, as shown in Figures 31-32, the spacer 40 is located on the side of the first spacer structure 300 away from the shell body 400, the spacer 40 is connected to the first spacer structure 300, the first spacer structure 300 is connected to the shell body 400, and the pole core is arranged inside the shell body 400.

[0193] Alternatively, in some embodiments of the present application, the first spacer structure 300 is located on a side of the spacer 40 away from the shell body 400 , the spacer 40 is connected to the first spacer structure 300 , and the spacer 40 is connected to the shell body 400 .

[0194] In some embodiments of the present application, the battery 1001 further includes a cover assembly 20, one of the spacer 40 and the first spacer structure 300 is adapted to be connected to the housing body 400, and the other is adapted to be connected to the cover assembly 20. Referring to Figures 31-32, the battery 1001 includes the cover assembly 20, the spacer 40, the first spacer structure 300, and the housing body 400. The first spacer structure 300 is adapted to be connected to the housing body 400, the spacer 40 is adapted to be connected to the cover assembly 20, and the spacer 40 is connected to the first spacer structure 300.

[0195] 28 , the first spacer structure 300 is provided with a tab original insertion hole 304 for the tab to pass through, thereby further reducing the shaking of the tab within the battery 1001. The first spacer structure 300 may include an original frame 1 301 and an original frame 2 302, which are connected by snap-fitting, and the tab original insertion hole 304 is formed at the connection between the original frame 1 301 and the original frame 2 302.

[0196] In some embodiments of the present application, the first original frame 301 is fixedly secured to the second original frame 302 by snapping. For example, one of the first original frame and the second original frame is provided with a snap-fitting protrusion, and the other is provided with a snap-fitting slot, wherein the snap-fitting protrusion snaps into engagement with the snap-fitting slot, thereby achieving the snap-fitting of the first original frame 301 and the second original frame 302. This snap-fitting method facilitates assembly and disassembly of the first original frame 301 and the second original frame 302, thereby facilitating the first original frame 301 and the second original frame 302 to clamp the tab from both sides of the tab, and also facilitating the removal of the first original frame 301 and the second original frame 302 from both sides of the tab.

[0197] The spacer 40 includes a bottom plate 305 and a side plate 306. The side plate 306 is arranged around the outer periphery of the bottom plate 305 and extends at least toward a first side of the bottom plate 305. The tab original insertion hole 304 is formed in the bottom plate 305. The bottom plate 305 can be a plate of uniform thickness or a plate of uneven thickness.

[0198] The bottom plate 305 is provided with a primary through-hole 308, which extends through the bottom plate 305 along its thickness. The primary through-hole 308 is in one-to-one communication with the through-hole 8. The primary through-hole 308 and the through-hole 8 balance the air pressure inside and outside the housing body 400, ensuring smooth and unimpeded electrolyte injection into the housing body 400. Furthermore, the arrangement of the primary through-hole 308 and the through-hole 8 facilitates the diffusion of gases generated within the battery 1001 through the primary through-hole 308 and the through-hole 8.

[0199] 33 , an energy storage device 1000 according to an embodiment of the third aspect of the present application includes the battery 1001 of the above embodiment.

[0200] According to the energy storage device 1000 of the embodiment of the present application, by providing the chip fixing area 3 on the spacer 40 , the chip 201 is conveniently fixed on the spacer 40 , so that the chip 201 and the spacer 40 become a whole, which facilitates the assembly of the battery 1001 .

[0201] 34 , an electrical device 10000 according to an embodiment of the fourth aspect of the present application includes the energy storage device 1000 of the above embodiment.

[0202] According to the electrical device 10000 of the embodiment of the present application, by providing a chip fixing area 3 on the spacer 40, the chip 201 is conveniently fixed on the spacer 40, so that the chip 201 and the spacer 40 become a whole, which facilitates the assembly of the battery 1001.

[0203] For example, the electrical equipment 10000 may be a vehicle, a ship, an airplane, a machine tool, a household appliance, etc.

[0204] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A spacer (40), wherein: The spacer (40) is provided with a chip fixing area (3) for fixing the chip (201) and a tab insertion hole (4) for allowing the tab to pass through, and the chip fixing area (3) is spaced apart from the tab insertion hole (4).

2. The spacer (40) according to claim 1, wherein The spacer (40) includes a first frame (1) and a second frame (2), wherein the first frame (1) and the second frame (2) are connected, and the tab jack (4) is formed between the first frame (1) and the second frame (2). The chip fixing area (3) includes a first half area (310) and a second half area (320), wherein the first half area (310) is arranged in the first frame (1), and the second half area (320) is arranged in the second frame (2).

3. The spacer (40) according to claim 2, wherein: The first frame (1) and the second frame (2) are fixed by snapping, and the snapping and fixing portion of the first frame (1) and the second frame (2) is spaced apart from the tab socket (4).

4. The spacer (40) according to any one of claims 1 to 3, wherein: The spacer (40) comprises a bottom wall plate (5) and a side wall plate (6) arranged around the outside of the bottom wall plate (5), wherein the side wall plate (6) extends at least toward a first side of the bottom wall plate (5), the chip fixing area (3) is located on the first side of the bottom wall plate (5), and the tab insertion hole (4) is formed on the bottom wall plate (5).

5. The spacer (40) according to claim 4, wherein: The bottom wall plate (5) comprises a thick plate portion (51) and a thin plate portion (52), the thickness of the thin plate portion (52) is smaller than the thickness of the thick plate portion (51), and the chip fixing area (3) is located at the thin plate portion (52).

6. The spacer (40) according to claim 4 or 5, wherein: The bottom wall plate (5) and the side wall plate (6) enclose a spacer ring space, a partition plate (7) is provided in the spacer ring space, and the partition plate (7), the side wall plate (6) and the bottom wall plate (5) enclose the chip fixing area (3).

7. The spacer (40) according to claim 6, wherein: The thickness of the partition (7) ranges from 0.5 mm to 4 mm.

8. The spacer (40) according to any one of claims 4 to 7, wherein: At least one through hole (8) is provided on the bottom wall plate (5), and the through hole (8) passes through the bottom wall plate (5) along the thickness direction of the bottom wall plate (5).

9. The spacer (40) according to claim 8, wherein The length of each through hole (8) is in the range of 0.5 mm to 8 mm; and / or the width of each through hole (8) is in the range of 0.3 mm to 5 mm.

10. The spacer (40) according to any one of claims 4 to 9, wherein: The side wall plate (6) is provided with an extraction hole (9) for the chip connection line (202) to pass through, the extraction hole (9) passes through the side wall plate (6) along the plate thickness direction of the side wall plate (6), and the extraction hole (9) is connected to the chip fixing area (3).

11. The spacer (40) according to claim 10, wherein: The outlet hole (9) is a circular hole, and the aperture of the outlet hole (9) ranges from 0.1 mm to 3 mm.

12. A battery (1001), wherein: include: A pole core having a pole ear; The spacer (40) according to any one of claims 1 to 11, wherein the tab is adapted to pass through the tab insertion hole (4); and A chip assembly (200), the chip assembly (200) comprising a chip (201) and a chip connection line (202), the chip (201) being embedded in the chip fixing area (3) and comprising a circuit structure and a detection structure, the detection structure being electrically connected to the circuit structure, the chip connection line (202) comprising a positive electrode member (2021) and a negative electrode member (2022), both the positive electrode member (2021) and the negative electrode member (2022) being electrically connected to the circuit structure, the positive electrode member (2021) being suitable for being electrically connected to the positive electrode post of the battery (1001), and the negative electrode member (2022) being suitable for being electrically connected to the negative electrode post of the battery (1001).

13. The battery (1001) according to claim 12, wherein The number of the spacer (40) is one or more.

14. The battery (1001) according to claim 12 or 13, wherein: The battery (1001) further comprises a first spacer structure (300), wherein the first spacer structure (300) is connected to the spacer (40), and the first spacer structure (300) is provided with an original tab insertion hole (304) for the tab to pass through.

15. The battery (1001) according to claim 14, wherein The first spacer structure (300) is fixedly engaged with the spacer (40).

16. The battery (1001) according to claim 14 or 15, wherein: The battery (1001) further includes a shell body (400), the spacer (40) or the first spacer structure (300) is suitable for being connected to the shell body (400), and the pole core is arranged inside the shell body (400).

17. An energy storage device (1000), wherein: A battery (1001) comprising a plurality of batteries according to any one of claims 12 to 16.

18. An electrical device (10000), wherein: Comprising the energy storage device (1000) according to claim 17.

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