Sampling member, battery, power consumption device, sampling member manufacturing, and sampling method

Abstract

The present application provides a sampling member (40), which includes a main body portion (410) and a wrap portion (420), wherein the main body portion (410) is used to transmit a sampling signal, one end of the wrap portion (420) is wrapped around the main body portion (410), and the other end of the wrap portion (420) is wrapped around a point to be sampled and used to collect the sampling signal, and the wrap portion (420) is provided with a fusion structure (422) to provide fusion protection for the main body portion.

Description

[Technical field]

[0001] The present application relates to the field of batteries, and in particular to sampling members, batteries, power consuming devices, sampling member manufacture and sampling methods. [Background technology]

[0002] Energy conservation and reduction of pollutant emissions are the keys to the sustainable development of the automotive industry, and electric vehicles, due to their advantages in energy conservation and environmental protection, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is also a key factor in their development.

[0003] With the popularization of batteries, their safety problems are also increasing, and since batteries need to be frequently charged and discharged during use, they are very likely to cause safety problems such as spontaneous combustion and explosion during charging and discharging.The inventors of this application have found through their research that how to effectively monitor the internal current situation of the battery and timely protect when the current is too large is an important method for preventing the occurrence of battery safety problems. Summary of the Invention

[0004] The embodiments of the present application propose a sampling member, a battery, a power consuming device, a sampling member manufacturing method and a sampling method to solve the battery safety problems during adoption that exist in the prior art.

[0005] An embodiment of the present application provides a sampling member, the sampling member including a body portion and a wrap portion, the body portion is used for transmitting a sampling signal, one end of the wrap portion is wrapped around the body portion, the other end of the wrap portion is wrapped around a point to be sampled and used for collecting the sampling signal, and a fusing structure is provided on the wrap portion to provide fusing protection for the body portion.

[0006] The embodiment of the present application simplifies the connection process between the sampling circuit and the point to be sampled by changing the structure of the sampling member, and the structure is simple, and the maintenance is easy and fast. In addition, the fusing part is installed on the wrap part to realize the fusing protection for the main body part, and the point to be sampled is connected to the main body part through the wrap part, and the fusing protection role can be played, so there is no need to install an additional fusing protection circuit, the structure is simple, and the internal space of the battery is greatly saved.

[0007] In some embodiments, the main body portion includes a conductive wire and an insulating layer, the insulating layer is coated on the surface of the conductive wire and is used to isolate the conductive wire, the conductive wire is exposed at a position in the insulating layer corresponding to the point to be sampled, and one end of the wrap portion is wrapped around the exposed portion of the conductive wire.

[0008] By providing openings at positions in the insulating layer of the main body portion corresponding to the points to be sampled to form exposed portions, the wrap portion can be easily electrically connected to the main body portion, and the structure is simple.

[0009] In some embodiments, the body includes a plurality of conductive wires and a plurality of wrapping portions, each of which is exposed at a position corresponding to each of the points to be sampled on the insulating layer, and one end of each wrapping portion is wrapped around the exposed portion of each of the conductive wires, thereby achieving sampling of a plurality of points to be sampled through the body, improving sampling efficiency, and achieving a compact structure and space saving.

[0010] In some embodiments, the wrap is wrapped perpendicularly to the body, which is advantageous in ensuring the strength of the connection between the wrap and the body and is also advantageous for pipelined production of the sampling member.

[0011] In some embodiments, the wrap portion includes a connecting portion and a fusing portion, the connecting portions being located at both ends of the fusing portion and used to connect the fusing portion to the body portion and the point to be sampled, respectively. By providing connecting portions at both ends of the fusing portion, respectively, the connection between the point to be sampled and the body portion can be easily realized, and the connection method can be flexibly changed.

[0012] In some embodiments, the fusing portion includes a chip resistor or a resistor wire. The chip resistor or resistor wire approach has a simple structure, is easy to manufacture, and has a relatively low production yield.

[0013] In some embodiments, the fuse includes an etch line, which can reduce the likelihood of the fuse breaking unexpectedly during use of the battery.

[0014] In some embodiments, the wrap is a flexible flat conductor, and the cross-sectional area of ​​the conductor in the fusing portion is smaller than the cross-sectional area of ​​the conductor in the connection portion. By locating the fusing portion to narrow the flexible flat conductor, the wrap can be integrated, making the construction simpler.

[0015] In some embodiments, a coating is applied to the surface of the joint and fusing portion. In the embodiments of the present application, the strength of the lap can be increased and better protected by applying a coating to the surface of the joint and fusing portion.

[0016] In some embodiments, the connections are attached to the exposed portions of the conductors by welding, crimping, crimping, or adhesive, allowing for a variety of connection methods.

[0017] Some embodiments of the present application further propose a battery, which includes battery cells and the sampling member according to the above embodiment, wherein the sampling member is connected to each battery cell via a wrap portion and is used to sample the battery cells.

[0018] Some embodiments of the present application further propose a power consuming device including a battery according to the above embodiments for providing electrical energy.

[0019] Some embodiments of the present application further propose a method for manufacturing a sampling member, the method comprising: Providing a main body portion for transmitting a sampling signal and a wrap portion; This includes wrapping one end of the wrap portion around the main body portion and wrapping the other end of the wrap portion around the point to be sampled to collect a sampling signal, and providing a fusing structure on the wrap portion to provide fusing protection for the main body portion.

[0020] In some embodiments, the method further includes exposing the body portion at a location corresponding to the point to be sampled and wrapping one end of the wrap portion over the exposed portion of the body portion.

[0021] The sampling member produced by the above-mentioned sampling member manufacturing method simplifies the connection process between the sampling circuit and the sampling point, and has a simple structure. In addition, by installing a fusing part in the wrap part, fusing protection for the main body part is realized, and the point to be sampled is connected to the main body part through the wrap part, and the role of fusing protection can be played. There is no need to install an additional fusing protection circuit, the structure is simple, and the internal space of the battery is greatly saved.

[0022] Some embodiments of the present application further propose a battery sampling method, the method comprising: Installing a wrap portion and wrapping one end of the wrap portion around a point where the battery should be sampled in order to collect a sampling signal; Installing a main body, wrapping the other end of the wrap portion around the main body, and transmitting a sampling signal to a control system via the main body; The wrap portion includes a fusing structure for providing fusing protection to the body portion when the body portion is shorted.

[0023] The battery sampling method according to the embodiment of the present application allows the battery to be sampled easily, does not increase the structural complexity of the battery, and is simple and effective to implement. [Brief description of the drawings]

[0024] The drawings described herein are intended to provide further understanding of the present application and constitute a part of the present application, and the schematic examples and the description thereof are intended to serve the purpose of interpreting the present application and are not intended to constitute undue limitations on the present application. [Figure 1] 1 is a schematic diagram of a commonly used sampling member configuration. [Diagram 2] 1 is a schematic diagram of a vehicle structure according to an embodiment of the present application; [Diagram 3] FIG. 2 is a schematic diagram of an exploded structure of a battery according to an embodiment of the present application. [Figure 4] FIG. 1 is a schematic diagram of a battery structure according to an embodiment of the present application. [Diagram 5] 1 is a schematic diagram of a sampling member structure according to an embodiment of the present application. [Figure 6] 2 is a schematic diagram of a sampling member body according to an embodiment of the present application. FIG. [Figure 7] 2 is a schematic diagram of a wrap structure according to an embodiment of the present application. [Figure 8] 1 is a schematic diagram of another wrap structure according to an embodiment of the present application. [Figure 9] FIG. 13 is a schematic diagram of a third type of wrap structure according to an embodiment of the present application. [Figure 10] 1 is a flowchart of a method for manufacturing a sampling member according to an embodiment of the present application. [Figure 11] 1 is a flow chart of a battery sampling method according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained based on the embodiments of the present application without the need for creative efforts by those skilled in the art are all within the scope of protection of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the art in the technical field of this application, and the terms used in the specification of this application are only for describing specific embodiments and are not intended to limit this application, and the terms "comprises" and "has" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive "comprises". The terms "first", "second", etc. in the specification and claims of this application or the above drawings are not intended to describe a specific order or subordinate relationship, but are intended to distinguish different objects.

[0027] An "embodiment" referred to in this application means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly or implicitly, that the embodiments described in this application can be combined with other embodiments.

[0028] In the description of the present application, it should be explained that unless otherwise clearly defined or limited, the terms "attached", "connected", "connected" and "attached" should be understood in a broad sense, for example, may be a fixed connection, a detachable connection, or an integral connection, may be a direct connection, may be an indirect connection through an intermediate medium, or may be communication between the insides of two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0029] The term "and / or" in this application merely describes the relationship between related objects and indicates that three relationships may exist, for example, A and / or B may represent three cases: A alone, A and B in combination, and B alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "or" relationship.

[0030] As used herein, "plurality" refers to two or more (including two); similarly, "sets" refers to two or more (including two); and "multiple sheets" refers to two or more (including two).

[0031] In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, or a magnesium ion battery, etc., and the embodiments of the present application are not limited thereto. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shape, and the embodiments of the present application are not limited thereto. Generally, the battery cell is divided into three types according to the packaging method, namely, a prismatic battery cell, a rectangular parallelepiped prismatic battery cell, and a pouch battery cell, and the embodiments of the present application are not limited thereto.

[0032] At present, with the development of technology, the application of power batteries is becoming more and more widespread. Power batteries are not only widely used in energy storage power systems such as hydroelectric, thermal, wind and solar power stations, but also in electric transportation tools such as battery cars, electric motorcycles and electric cars, as well as in military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also constantly expanding.

[0033] The inventors of the present application have found the following. During charging and discharging, the battery may have a current that is too large. If the current in the battery is too large, the battery may short-circuit or become too hot, which may even cause spontaneous combustion or explosion. If the current in the battery is too large, the large current passes through a battery sampling circuit electrically connected to the battery cell. A conventional battery sampling signal is generally transmitted to a battery management system through a flexible flat cable (FFC). A conventional flexible flat cable generally includes an insulator and a number of conductors arranged in parallel with the insulator, and the conductors are elongated with equal widths, and the longitudinal cross-sectional areas at each position are all equal, so that the resistance values ​​at each position of the entire conductor are equal. If a large current passes through such a flexible flat cable, it will not have the function of meltdown protection and will directly damage the battery management system.

[0034] 1 shows a commonly used sampling circuit structure diagram for monitoring the inside of a battery, which is developed by the inventors of the present application, and the sampling circuit is installed inside the battery, and at each sampling point, a flexible flat line is cut and then bent to directly connect to the battery cell, thereby achieving sampling of the input or output signal of the battery cell. The applicant has found that if the sampling circuit is connected to the battery cell by bending the line, the process is relatively complicated, and especially when bending, it is difficult to ensure the accuracy of the bending positioning, and there are also problems such as the bending angle cannot be maintained.

[0035] The inventors of the present application further discovered that in order to protect the control devices of the battery management system, a fusing circuit is generally directly installed on the flexible flat line, and when the current value input to or output from the battery cell is greater than a certain threshold, the fusing circuit automatically performs fusing protection. In the conventional fusing protection method, after performing fusing protection on the fusing protection circuit, the entire flexible flat line needs to be discarded and all the flexible flat circuits need to be replaced, which makes the battery maintenance operation complicated and the maintenance components very large.

[0036] Based on the above considerations, the embodiments of the present application propose a sampling member, a sampling method, a method for manufacturing the sampling member, and a corresponding battery and power consumption device using the sampling member to solve the above problems in the prior art. In the embodiments of the present application, the sampling circuit and the fusing protection circuit are integrated, so that the sampling member has the functions of signal sampling and fusing protection at the same time. In addition, the sampling circuit is connected to the battery cell by wrapping two parts, eliminating the need to bend the flexible circuit to connect the battery cell, simplifying the process of circuit sampling, reducing the complexity of the maintenance battery, and improving the safety of the battery.

[0037] The sampling member, sampling method, sampling member manufacturing method, and corresponding battery using the sampling member disclosed in the embodiments of the present application can be used in, but not limited to, power consumption devices such as vehicles, ships, and aircraft. A power supply system of the power consumption device including the configuration of the sampling member, battery, etc. disclosed in the present application can be used, which is advantageous in improving the safety of the battery.

[0038] An embodiment of the present application provides a power consuming device that uses a battery as a power source, and the power consuming device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a steamship, a spacecraft, etc. Here, the electric toy may include stationary or mobile electric toys, such as a game console, an electric car toy, an electric steamship toy, an electric plane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0039] In the following embodiment, for convenience of explanation, a vehicle 1000 is taken as an example of the power consuming device in one embodiment of the present application.

[0040] Referring to FIG. 2, FIG. 2 is a schematic diagram of the structure of a vehicle 1000 according to an embodiment of the present application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range extender vehicle, etc. A battery 100 is installed inside the vehicle 1000, and the battery 100 may be installed at the bottom, head or rear of the vehicle 1000. The battery 100 may be used to supply power to the vehicle 1000, for example, the battery 100 may be an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to supply power to the motor 300, for example, for the start-up, navigation and running power consumption needs of the vehicle 1000.

[0041] In some embodiments of the present application, the battery 100 can be used not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, providing driving power to the vehicle 1000 in place of, or in place of, fuel oil or natural gas.

[0042] Referring to FIG. 3, FIG. 3 is an exploded view of a battery 100 according to an embodiment of the present application. The battery 100 includes a housing 10 and a battery cell 20 housed in the housing 10. Here, the housing 10 is used to provide a housing space for the battery cell 20, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include an upper housing 11 and a lower housing 12, and the upper housing 11 and the lower housing 12 are covered with each other, so that the upper housing 11 defines a housing space for housing the battery cell 20 together with the lower housing 12. The lower housing 12 may have a hollow structure with one end open, and the upper housing 11 may have a plate-like structure, and the upper housing 11 covers the opening side of the lower housing 12, so that the upper housing 11 defines a housing space together with the lower housing 12. Both the upper housing 11 and the lower housing 12 may have a hollow structure with one end open, and the opening side of the upper housing 11 covers the opening side of the lower housing 12. Of course, the housing 10 formed by the upper housing 11 and the lower housing 12 may have various shapes, for example, a cylindrical body, a rectangular parallelepiped, and the like.

[0043] The battery 100 referred to in the embodiments of the present application means a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery 100 referred to in the present application may include a battery module or a battery pack. There may be a plurality of battery cells 20, and the plurality of battery cells 20 may be connected in series, in parallel, or in series-parallel, and the series-parallel connection means that the plurality of battery cells 20 may be connected in series or in parallel or in series-parallel. The plurality of battery cells 20 may be directly connected in series, in parallel, or in series-parallel, and then the entire structure of the plurality of battery cells 20 may be housed in the housing 10. Of course, the plurality of battery cells 20 may first be connected in series, in parallel, or in series-parallel to form a battery 100 in the form of a battery module, and then the plurality of battery modules may be connected in series, in parallel, or in series-parallel to be integrated and housed in the housing 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus bar member for realizing electrical connection between the plurality of battery cells 20.

[0044] Each battery cell 20 may be, but is not limited to, a lithium ion secondary battery, a lithium ion primary battery, a lithium-sulfur battery, a sodium lithium ion battery, or a magnesium ion battery. The battery cells 20 may be cylindrical, flat, rectangular, or have other shapes.

[0045] As shown in Fig. 4, inside the battery 100, each battery cell 20 has a positive terminal and a negative terminal for outputting power to the outside. The positive terminals of the multiple battery cells 20 are connected via a connection part 210, and the negative terminals of the multiple battery cells 20 are also connected via a connection part 210 to form different assembled batteries, and realize series or parallel connection of different battery cells. When sampling the battery cells, each battery cell may be sampled, or the battery assembly may be sampled in units of assembled batteries. When sampling in units of assembled batteries, sampling may be performed by connecting to each assembled battery via a sampling member.

[0046] As shown in Figures 4 and 5, this is a schematic application diagram of the sampling member 40 according to an embodiment of the present application, where the sampling member 40 includes a main body portion 410 and a wrap portion 420, the main body portion 410 is used for transmitting a sampling signal, one end of the wrap portion 420 is wrapped around the main body portion 410, the other end of the wrap portion 420 is wrapped around the point to be sampled and used for collecting the sampling signal, and a fusing structure 422 is installed on the wrap portion to provide fusing protection for the main body portion 410.

[0047] In FIG. 4 , the sampling member 40 is applied to a battery to sample battery cells or battery packs in the battery, the battery includes a plurality of battery cells 20, which are combined via connecting parts 210 to form battery packs, each battery pack is one sampling point of the battery, and the sampling member 40 is responsible for sampling each battery pack.

[0048] The sampling member 40 includes a main body 410 and a plurality of wrap parts 420. The main body 410 is installed on the surface of one end of each battery cell 20, generally installed at one end of the electrode terminal in the height direction of the battery cell, and penetrates the surfaces of the plurality of battery cells 20 to facilitate connection between the main body 410 and each assembled battery to be sampled. The main body 410 may employ a flexible flat cable to facilitate wiring inside the battery. The main body 410 is used to transmit a sampling signal, includes a plurality of cable lines, and can thus be connected to a plurality of wrap parts 420 to simultaneously transmit sampling signals of a plurality of points to be sampled.

[0049] One end of each wrap portion 420 is electrically connected to the body portion 410, and the other end is electrically connected to a point to be sampled and is used to collect a sampling signal. The number of wrap portions 420 corresponds to the number of points to be sampled, i.e., corresponds to the number of assembled batteries to be sampled. By separately installing the wrap portions 420 and the body portion 410, it is easy to connect the points to be sampled to the body portion 410 of the sampling member 40, and there is no need to perform a bending process after dividing the body portion, so the connection is very easy and the process is simple.

[0050] In addition, the wrap portion 420 is provided with a fusing structure 422 for providing fusing protection to the body portion 410. The fusing structure 422 is directly provided integrally with the wrap portion 420, and connects the point to be sampled to the body portion 410 through the wrap portion 420, and can also provide fusing protection, eliminating the need to provide an additional fusing protection circuit, simplifying the structure and greatly saving the space inside the battery. Furthermore, when the single fusing structure 422 provides fusing protection, only the fused wrap portion 420 needs to be replaced, and not necessarily the entire flexible flat line, making maintenance easy, fast, and low-cost.

[0051] 5, which shows a structure diagram of the sampling member 40 according to an embodiment of the present application, the main body 410 is a long flexible flat circuit on which an interface connected to a sampling control circuit is installed, and the wrap portion 420 is wrapped at a position corresponding to the point to be sampled on the main body 410, and the wrap portion 420 can be electrically connected to the main body 410 by a method such as welding. The wrap portion 420 can select a position to be wrapped on the main body 410 according to the position of the assembled battery to be measured. In the actual use process, the wrap portion 420 is pre-installed at a corresponding position on the main body 410 according to the position of the point to be sampled of the battery, and is integrated with the main body 410. When the main body 410 is installed on the surface of the battery to perform sampling, the wrap portion 420 may be installed according to the situation of the actual sampling point.

[0052] In the embodiment of the present application, the structure of the sampling member is changed and the sampling member is divided into a main body part and a wrap part, so that the wrap part can wrap freely according to the position of the sampling point, simplifying the connection process between the sampling circuit and the point to be sampled and simplifying the structure. In addition, by installing a fusing part in the wrap part, fusing protection for the main body part is realized, and the point to be sampled is connected to the main body part through the wrap part, which can also play the role of fusing protection, eliminating the need to install an additional fusing protection circuit, simplifying the structure and greatly saving the internal space of the battery.

[0053] In some embodiments, as shown in Figures 5 and 6, the main body portion 410 includes a conductive wire 4111 and an insulating layer 4112, the insulating layer 4112 is coated on the surface of the conductive wire 4111 and is used to isolate the conductive wire, the conductive wire 4111 is exposed at a position corresponding to the point to be sampled on the insulating layer 4112, and one end of the wrap portion is wrapped around the exposed portion 411 of the conductive wire.

[0054] The main body 410 of the sampling member 40 is a flexible flat circuit, and the main body 410 includes a plurality of conductive wires 4111, and the surface of the conductive wires 4111 is covered with an insulating layer 4112 to isolate the conductive wires of each path and avoid short circuits between the conductive wires. By installing the plurality of conductive wires 4111, multiple sampling points can be sampled simultaneously, and as can be seen from FIG. 5, multiple wrapping parts 420 are wrapped around the main body 410, and each wrapping part is wrapped at a different position on the main body 410. To realize the wrapping between the wrapping part 420 and the main body 410, an opening is provided in the insulating layer 4112 at a position corresponding to each point to be sampled on the main body 410 to form an exposed portion 411, and the wrapping part 420 is connected to the conductive wires of the main body 410 at the exposed portion 411, and the conductive wires of the main body 410 are electrically connected to the wrapping part 420 by welding or other methods.

[0055] By forming openings at positions corresponding to each point to be sampled in insulating layer 4112 of main body portion 410 to form exposed portions 411, wrap portion 420 can be easily electrically connected to main body portion 410, and the structure is simple.

[0056] In some embodiments, the main body portion 410 includes a plurality of conductive wires 4111 and a plurality of wrap portions 420, each of which is exposed at a position corresponding to each point to be sampled in the insulating layer 4112, and one end of each wrap portion 420 is wrapped around the exposed portion 411 of each conductive wire, for example, in Figures 5 and 6, the wrap portion 420 is wrapped around the exposed portion 411 and the wrap portion 430 is wrapped around the exposed portion 412.

[0057] 4 and 5, the main body 410 includes multiple paths of conductive wires 4111, and can simultaneously sample multiple points to be sampled, and exposes the insulating layer 4112 at positions corresponding to the points to be sampled. It should be noted that the circuits for sampling the points to be sampled are independent circuits, and therefore the wrap parts 420 need to be connected to different conductive wires when sampling multiple points to be sampled, so the exposed parts 411 need to be offset from each other and short circuits should not occur. By connecting to multiple wrap parts 420 via one main body 410, simultaneous sampling of multiple points to be sampled is achieved, improving sampling efficiency.

[0058] In some embodiments, the wrap portion 420 is wrapped perpendicularly to the body portion 410. As shown in Fig. 5, each wrap portion 420 is wrapped on the body portion 410, and the wrapping manner may be determined according to the position of the point to be sampled and the position of each exposed portion 411 on the body portion 410, and preferably, the wrap portion 420 is wrapped perpendicularly to the body portion 410, i.e., the wrap portion 420 is wrapped at a perpendicular angle of 90 degrees with the body portion 410, which is advantageous to ensure the connection strength between the wrap portion 420 and the body portion 410 and is also advantageous to pipeline production processing of the sampling member 40.

[0059] In some embodiments, the wrap portion 420 includes a connecting portion 421 and a fusing portion 422, and the connecting portion 421 includes a first connecting portion 4211 and a second connecting portion 4212, which are located at opposite ends of the fusing portion 422, respectively, and are used to connect the fusing portion 422 to the main body portion 410 and the point to be sampled, respectively.

[0060] As shown in Fig. 7 and Fig. 8, the first connecting portion 4211 and the second connecting portion 4212 are located at both ends of the fusing portion 422, respectively, and the connecting portion and the fusing portion can be formed into an integral structure by one or any combination of various methods such as welding, crimping, caulking, or bonding. The first connecting portion 4211 and the second connecting portion 4212 can be made of the same material or different materials, and generally, the connecting portion can adopt a flexible circuit or can be made of a conductive material such as copper foil or aluminum foil. When the first connecting portion 4211 and the second connecting portion 4212 are made of different materials, the first connecting portion 4211 is used to connect to the point to be sampled, and the point to be sampled is generally a battery cell or a connecting part connected to the battery cell, so in order to ensure the connection strength between the first connecting portion 4211 and the battery cell, the first connecting portion 4211 can be installed as a circuit structure having a certain strength, such as a nickel sheet, a copper sheet, an aluminum sheet, or other composite materials. The second connecting part 4212 is connected to the main body 410, and since the main body 410 generally adopts a flexible circuit, the second connecting part 4212 can adopt the same flexible circuit as the main body 410, so that it can be better wrapped around the main body 410. Therefore, the connecting part 421 can be freely selected according to the actual circuit situation.

[0061] By providing connection parts on both ends of fusing part 422, the point to be sampled and the main body can be easily connected, and the connection method can be flexibly changed.

[0062] In some embodiments, the fusing portion 422 includes a chip resistor or a resistance wire. As shown in Figures 7 and 8, in order to meet the needs of different sampling circuits, the fusing portion 422 can adopt various forms, where Figure 7 shows a resistance wire and Figure 8 shows a chip resistor. The chip resistor or resistance wire form has a simple structure, is easy to manufacture, and has a relatively low production yield.

[0063] In some embodiments, the fusing portion 422 includes an etching line. Since the battery is subject to a lot of shaking during use, fusing protection can be provided by providing an etching line on the PCB circuit board or FPC flexible board to increase the strength of the wrap portion 420. In this manner, it is possible to reduce the occurrence of unexpected breakage of the fusing portion during use of the battery.

[0064] In some embodiments, as shown in FIG. 9, the wrap portion 420 is a flexible flat conductor, and the cross-sectional area of ​​the conductor of the fusing portion 422 is smaller than that of the conductor of the connecting portion 421. The wrap portion 420 shown in the embodiments of the present application adopts a flexible flat conductor, and the connecting portion 421 can be integrated with the fusing portion 422, making the structure more compact. In order to achieve the fusing protection, in the embodiments of the present application, a certain position of the flexible flat conductor can be narrowed to reduce the width of the conductor in this portion, forming the fusing portion 422. Since the fusing portion has a smaller width than other portions, when the current reaches a certain intensity, the narrowed portion is first fused, thereby achieving the effect of fusing protection. By setting the fusing portion to narrow the flexible flat conductor, the wrap portion can be integrated, making the structure simpler.

[0065] In some embodiments, a coating is applied to the surfaces of the connection portion 421 and the fusing portion 422. Since the battery is often shaken during use, the strength of the wrap portion 420 is very important, and if the wrap portion 420 is not strong enough and breaks during shaking, the battery cell will not be able to provide power. In the embodiments of the present application, a coating is applied to the surfaces of the connection portion 421 and the fusing portion 422, thereby increasing the strength of the wrap portion 420 and providing better protection.

[0066] In some embodiments, the connection portion 421 is attached to the exposed portion of the conductor by welding, crimping, caulking, or adhesive. The connection portion can be made of materials such as nickel sheet, copper sheet, aluminum sheet, or other composite materials, and the connection portion can be connected to the conductor of the body portion 410 by welding, crimping, caulking, or adhesive to realize the connection between the wrap portion 420 and the body portion 410, thereby realizing a variety of connection methods.

[0067] According to some embodiments of the present application, a battery is further proposed, the battery includes a battery cell 20 and any one of the sampling members 40 mentioned in the above embodiments, as shown in Fig. 4, a plurality of battery cells 20 are connected in series or parallel through a connection part 210, the sampling member 40 is installed on one side of the battery cell 20, the sampling member 40 includes a body part 410 and a wrap part 420, the wrap part 420 connects each point to be sampled to the body part 410, simplifying the connection process, and the wrap part 420 further includes a fusing part, which automatically protects the battery cell from fusing when the current flowing through the battery cell is too large. By adopting the sampling member according to the embodiments of the present application, the battery structure according to the embodiments of the present application is more compact and the sampling effect is better.

[0068] According to some embodiments of the present application, there is further provided a power consuming device, including a battery according to the above embodiments for providing electrical energy to the power consuming device. The power consuming device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a steamship, a spacecraft, etc. Here, the electric toy may include a stationary or mobile electric toy, such as a game console, an electric car toy, an electric steamship toy, an electric plane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0069] In some embodiments, the present application further proposes a method for manufacturing a sampling member, which is used to produce and manufacture the sampling member according to the above embodiments, and the manufacturing method is generally performed on a production equipment for the sampling member, and the production equipment includes one or more components for performing the manufacturing method. Specifically, the manufacturing method for the sampling member includes the following steps, as shown in FIG. 10 :

[0070] Step 501: Provide a body portion for transmitting a sampling signal and a wrap portion.

[0071] Step 502: One end of the wrap portion is wrapped around the body portion, and the other end of the wrap portion is wrapped around the point to be sampled in order to collect the sampling signal.

[0072] Step 503: Install a fusing structure on the wrap portion to provide fusing protection for the body portion.

[0073] The sampling member produced by the above-mentioned sampling member manufacturing method simplifies the connection process between the sampling circuit and the sampling point, and has a simple structure. In addition, by installing a fusing part in the wrap part, fusing protection for the main body part is realized, and the point to be sampled is connected to the main body part through the wrap part, and the role of fusing protection can be played. There is no need to install an additional fusing protection circuit, the structure is simple, and the internal space of the battery is greatly saved.

[0074] In some embodiments, the manufacturing method further includes exposing the body portion at positions corresponding to the points to be sampled, and wrapping one end of the wrap portion around the exposed points of the body portion. By providing openings at the positions corresponding to the points to be sampled on the body portion to form the exposed points, the wrap portion can be easily electrically connected to the body portion, and the structure is simple.

[0075] In some embodiments, the present application further proposes a battery sampling method, which can easily sample a battery without increasing the structural complexity of the battery, specifically, as shown in FIG. 11 , the method includes the following steps:

[0076] Step 601: Install the wrap portion and wrap one end of the wrap portion to the point where the battery should be sampled in order to collect the sampling signal.

[0077] Step 602: Install the main body, wrap the other end of the wrap part to the main body, and transmit the sampling signal to the control system via the main body.

[0078] Step 603: A fusing structure is provided in the wrap portion, and when the main body portion is short-circuited, fusing protection is provided for the main body portion.

[0079] The battery sampling method according to the embodiment of the present application allows the battery to be sampled easily, does not increase the structural complexity of the battery, and is simple and effective to implement.

[0080] Finally, it should be noted that the above examples are only for illustrating the technical solutions of the present application, and are not intended to limit the same. Although the present application has been described in detail with reference to the above examples, the technical solutions described in the above examples can still be modified or some of the technical features thereof can be replaced with equivalents, but those skilled in the art should understand that such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application. [Explanation of symbols]

[0081] 1000 vehicle, 100 battery, 10 housing, 11 upper housing, 12 lower housing, 200 controller, 300 motor, 20 battery cell, 210 connection part, 40 sampling member, 410 main body portion, 411, 412 exposed portion, 4111 conducting wire, 4112 insulating layer, 420, 430 wrapping portion, 421 connection portion, 4211 first connection portion, 4212 second connection portion, 422 fused portion.

Claims

1. A sampling member, comprising: a main body portion and a wrapping portion, wherein the main body portion is used for transmitting a sampling signal, one end of the wrapping portion is wrapped around the main body portion, the other end of the wrapping portion is wrapped around a point to be sampled and is used for collecting a sampling signal, and a fusing structure for performing fusing protection on the main body portion is installed on the wrapping portion, and the fusing structure is not provided on the main body portion. The main body portion is a flexible flat cable, and one end of the wrapping portion wrapped around the main body portion is a flexible flat conductor. A sampling member, characterized in that.

2. The main body portion includes a conductor and an insulating layer, the insulating layer is coated on the surface of the conductor and is used for isolating the conductor, the conductor is exposed at a position corresponding to the point to be sampled in the insulating layer, and one end of the wrapping portion is wrapped around the exposed portion of the conductor. The sampling member according to claim 1, characterized in that.

3. Including a plurality of the wrapping portions, the main body portion includes a plurality of conductors, each conductor is exposed at a position corresponding to each point to be sampled in the insulating layer, one end of each wrapping portion is wrapped around the exposed portion of each conductor respectively. The sampling member according to claim 2, characterized in that.

4. The wrapping portion is wrapped around the main body portion perpendicularly. The sampling member according to any one of claims 1 to 3, characterized in that.

5. The wrapping portion includes a connecting portion and a fusing portion, the connecting portions are located at both ends of the fusing portion and are used for connecting the fusing portion to the main body portion and the point to be sampled respectively. The sampling member according to any one of claims 1 to 4, characterized in that.

6. The fusing portion includes a chip resistor or a resistance wire. The sampling member according to claim 5, characterized in that.

7. The fusing portion includes an etching line. The sampling member according to claim 5, characterized in that.

8. The wrapping portion is a flexible flat conductor, and the cross-sectional area of the conductor of the fusing portion is smaller than the cross-sectional area of the conductor of the connecting portion. The sampling member according to claim 5, characterized in that.

9. A coating is installed on the surfaces of the connecting portion and the fusing portion. The sampling member according to claim 5, characterized in that.

10. The wrapping part includes a connection part and a fusing part, The connection part is located at both ends of the fusing part and is used to connect the fusing part to the main body part and the point to be sampled respectively, The connection part is installed at the exposed part of the conducting wire by welding, crimping, caulking or adhesion method. The sampling member according to claim 2 or 3 is characterized by this.

11. A battery, comprising a battery cell and the sampling member according to any one of claims 1 to 10, The sampling member is connected to each battery cell through a wrapping part and is used to sample the battery cell. The battery is characterized by this.

12. A power consumption device, comprising the battery according to claim 11, and the battery is for providing electrical energy. The power consumption device is characterized by this.

13. A manufacturing method of a sampling member, Providing a main body part for transmitting a sampling signal and a wrapping part, Wrapping one end of the wrapping part around the main body part, and in order to collect the sampling signal, wrapping the other end of the wrapping part around the point to be sampled. The main body part is a flexible flat cable, and one end of the wrapping part wrapped around the main body part is a flexible flat conducting wire, Installing a fusing structure on the wrapping part to perform fusing protection on the main body part, and the fusing structure is not provided on the main body part. The manufacturing method of the sampling member is characterized by this.

14. Exposing the main body part at a position corresponding to the point to be sampled, and wrapping the one end of the wrapping part around the exposed part of the main body part. The manufacturing method according to claim 13 is characterized by this.

15. A battery sampling method, Installing a wrapping part, and in order to collect the sampling signal, wrapping one end of the wrapping part around the point to be sampled for battery sampling, Installing a main body part, wrapping the other end of the wrapping part around the main body part, and transmitting the sampling signal to a control system through the main body part. The main body part is a flexible flat cable, and one end of the wrapping part wrapped around the main body part is a flexible flat conducting wire, A battery sampling method is characterized in that a fusing structure is installed in the wrapping part, and when the main body part is short-circuited, fusing protection is performed on the main body part, and the fusing structure is not provided on the main body part.

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