Sampling structure, battery information acquisition device, battery device and electric equipment

Abstract

The utility model provides a sampling structure, a battery information acquisition device, a battery device and electric equipment, and the sampling structure comprises a bearing part; the voltage sampling structure is used for acquiring the voltage of the to-be-sampled piece; the bearing part, the pressure sampling structure and the temperature sampling structure are integrated into an integral structure, and the temperature sampling structure is used for acquiring the temperature of the to-be-sampled part. The sampling structure is simple in structure and small in size.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a sampling structure, a battery information acquisition device, a battery device, and an electrical device. Background Art

[0002] Batteries are assembled from multiple cells. To improve battery performance, safety, and service life, they are equipped with a thermal management system. This system can promptly respond to and address any abnormalities and determine the battery's charge and discharge power based on ambient temperature, battery status, and vehicle requirements. The thermal management system may include a sampling module that collects battery voltage and temperature, providing essential information for vehicle control.

[0003] In the related technology, the sampling module includes a circuit board, a pressure sampling structure and a temperature sampling structure. The temperature sampling structure and the pressure sampling structure are respectively arranged on both sides of the circuit board. The pressure sampling structure is directly connected to the circuit board, and the temperature sampling structure is connected to the circuit board through a wiring harness. Each temperature sampling point of the temperature sampling structure requires wiring, which will cause the sampling module structure to be more complex and larger in size, and thus cause the battery to have insufficient space for arranging the sampling module. Utility Model Content

[0004] Based on this, the present application provides a sampling structure, a battery information collection device, a battery device and an electrical device. The sampling structure can simultaneously collect the temperature and voltage of the sampled component, thereby reducing the volume of the sampling structure.

[0005] In a first aspect, the present application provides a sampling structure, comprising: a carrier; a pressure sampling structure, the pressure sampling structure being used to obtain the voltage of the component to be sampled; and a temperature sampling structure, so that the carrier, the pressure sampling structure and the temperature sampling structure are integrated into an integral structure, the temperature sampling structure being used to obtain the temperature of the component to be sampled.

[0006] In a possible implementation, the temperature sampling structure is used to obtain the temperature of the sampled component by sampling the temperature of the pressure sampling structure.

[0007] In a possible implementation, the pressure collection structure is located on one side of the bearing member and connected to one end of the bearing member, and the temperature collection structure is located on the other side of the bearing member and connected to the pressure collection structure.

[0008] In a possible embodiment, the sampling structure of the present application further includes: a reinforcing member, the reinforcing member being located on a side of the supporting member facing away from the pressure sampling structure and connected to the supporting member;

[0009] The reinforcement parts are arranged on the outside of the heating structure.

[0010] In a possible embodiment, a through hole is opened on the reinforcing member, part of the temperature collection structure is located in the through hole, and a gap is formed between the pressure collection structure and the inner wall of the through hole.

[0011] In a possible embodiment, the sampling structure of the present application also includes: a transmission structure, which is arranged in the carrier, one end of the transmission structure is electrically connected to the temperature sampling structure and the pressure sampling structure, and the other end of the transmission structure extends toward the end of the carrier away from the pressure sampling structure.

[0012] In one possible embodiment, the transmission structure includes a temperature sampling transmission component and a pressure sampling transmission component, one end of the temperature sampling transmission component is connected to the temperature sampling structure, and one end of the pressure sampling transmission component is connected to the pressure sampling structure;

[0013] The temperature sampling transmission component and the pressure sampling transmission component are arranged at intervals in the bearing component.

[0014] In a possible implementation, the pressure sampling and transmission assembly includes a first transmission section, a fuse protection section, and a second transmission section connected in sequence, and the first transmission section is connected to the pressure sampling structure.

[0015] In a possible embodiment, the carrier includes a first carrier and a second carrier stacked on top of each other;

[0016] The transmission structure is located between the first carrier and the second carrier;

[0017] A first opening is provided at a position where the first supporting member is opposite to the temperature collection structure, so that the temperature collection structure is connected to the temperature collection transmission component through the first opening; a second opening is provided at a position where the second supporting member is opposite to the pressure collection transmission component, so that the pressure collection transmission component is connected to the pressure collection structure through the second opening.

[0018] In a possible embodiment, the pressure sampling structure includes a pressure sampling plate and a heat-conductive and electrically conductive member. The heat-conductive and electrically conductive member is located between the pressure sampling plate and the supporting member. The heat-conductive and electrically conductive member is connected to the pressure sampling transmission assembly. The pressure sampling plate is used to connect to the sample to be sampled.

[0019] In one possible embodiment, the sampling and pressure plate includes a first connection area and a second connection area that are connected to each other, the projection of the first connection area in the thickness direction of the carrier is located inside the carrier, and the projection of the second connection area in the thickness direction of the carrier is located outside the carrier, the first connection area is connected to the pressure sampling and transmission assembly through a thermally conductive and electrically conductive member, and the second connection area is used to connect to the sample to be sampled.

[0020] In a possible embodiment, the extension direction of the first connection area is consistent with the extension direction of the second connection area, and the extension direction of the first connection area is consistent with the extension direction of the carrier; or, the extension direction of the first connection area and the extension direction of the carrier form an angle.

[0021] In a possible embodiment, the extension directions of the first connection region and the second connection region form an angle, and the extension direction of the first connection region is consistent with the extension direction of the supporting component.

[0022] In a possible embodiment, the two second connection areas are respectively located on both sides of the first connection area along the extension direction of the carrier, and at least one second connection area is used to connect to the sample to be sampled.

[0023] In a second aspect, the present application provides a battery information collection device, comprising a substrate and the sampling structure provided in the first aspect above, one end of the sampling structure is electrically connected to the substrate, and a plurality of sampling structures are arranged at intervals along the substrate.

[0024] In a third aspect, the present application provides a battery device comprising a plurality of battery cells and the sampling structure provided in the first aspect or the battery information collection device provided in the second aspect, wherein the sampling structure is connected to the battery cells.

[0025] In a fourth aspect, the present application provides an electrical device, comprising an electrical device and the battery device provided in the third aspect above, wherein the battery device is used to provide electrical energy to the electrical device.

[0026] The present application provides a sampling structure, a battery information collection device, a battery device and an electrical equipment. The sampling structure includes a bearing member, a pressure sampling structure and a temperature sampling structure. The bearing member is provided to carry the pressure sampling structure and the temperature sampling structure, so that the bearing member, the pressure sampling structure and the temperature sampling structure are integrated into a whole, thereby reducing the volume of the sampling structure. The pressure sampling structure is provided to be connected to the part to be sampled, and the pressure sampling structure serves as the pressure sampling connection point between the sampling structure and the part to be sampled to collect the voltage of the part to be sampled. The temperature sampling structure is provided to obtain the temperature of the part to be sampled. In this way, the sampling structure provided by the present application can collect the voltage and temperature of the part to be sampled. The sampling structure has a simple structure and a small volume, and each battery cell in the battery device can be provided with a sampling structure separately, thereby improving the accuracy of the sampling structure.

[0027] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the sampling structure, battery information collection device, battery device and electrical equipment provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 A schematic diagram of the structure of a battery information collection device provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of the battery information collection device and bus provided in an embodiment of the present application;

[0031] Figure 3 Another structural diagram of the battery information collection device and bus provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the first structure of the sampling structure provided in an embodiment of the present application;

[0033] Figure 5 for Figure 4 Structural diagram from another angle;

[0034] Figure 6 for Figure 4 Exploded diagram;

[0035] Figure 7 for Figure 5 Exploded diagram;

[0036] Figure 8 A schematic diagram of the transmission structure in the sampling structure provided in an embodiment of the present application;

[0037] Figure 9 A schematic diagram of the structure of the pressure sampling and transmission component in the sampling structure provided in an embodiment of the present application;

[0038] Figure 10 A schematic structural diagram of the first supporting member in the sampling structure provided in an embodiment of the present application;

[0039] Figure 11 A schematic structural diagram of the second carrier in the sampling structure provided in an embodiment of the present application;

[0040] Figure 12 for Figure 4 A top view of

[0041] Figure 13 A schematic diagram of the second structure of the sampling structure provided in an embodiment of the present application;

[0042] Figure 14 A schematic diagram of a third structural embodiment of the sampling structure provided in the present application;

[0043] Figure 15 This is a schematic diagram of the fourth structure of the sampling structure provided in an embodiment of the present application.

[0044] Description of reference numerals:

[0045] 1-Battery information collection device;

[0046] 10-sampling structure;

[0047] 100 - carrier; 110 - first carrier; 111 - first opening; 112 - third opening; 120 - second carrier; 121 - second opening; 122 - fourth opening;

[0048] 200 - pressure collecting structure; 210 - pressure collecting plate; 211 - first connection area; 212 - second connection area; 220 - heat-conducting and electrical-conducting member;

[0049] 300-temperature collection structure;

[0050] 400-reinforcement; 410-through hole;

[0051] 500-transmission structure; 510-temperature transmission component; 520-pressure transmission component; 521-first transmission section; 522-fuse protection section; 523-second transmission section;

[0052] 20-Substrate;

[0053] 2-Bus. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0056] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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 should not be understood as a limitation on this application.

[0057] The terms "first," "second," and "third" (if any) in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the application described herein can, for example, be implemented in orders other than those illustrated or described herein.

[0058] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or display that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or display.

[0059] In the related technology, the sampling module includes a circuit board, a pressure sampling structure and a temperature sampling structure. The temperature sampling structure includes a connector, a wiring harness and a thermistor. The pressure sampling structure includes a nickel sheet terminal. The nickel sheet terminal and the thermistor are respectively arranged on both sides of the circuit board. The nickel sheet terminal is directly connected to the circuit board, and the thermistor is connected to the circuit board through a wiring harness. Since the temperature sampling structure and the pressure sampling structure are arranged separately, and each temperature sampling point of the temperature sampling structure needs to be wired, when there are enough temperature sampling points, the wiring harness will become thicker and thicker, which will make the sampling module structure more complex and larger in size, which will result in insufficient space in the battery for arranging the sampling module, while increasing the cost of the sampling module.

[0060] In addition, due to the limited space for battery layout, in related technologies, the sampling module does not collect the temperature and voltage of each battery cell. Instead, a temperature sampling structure is used to collect the temperatures of multiple battery cells, and a pressure sampling structure is used to collect the voltages of multiple battery cells. The voltage and temperature of one of the multiple battery cells are used as representatives, thereby increasing the error of the sampling module.

[0061] In view of the above problems, an embodiment of the present application provides a sampling structure, which integrates a temperature sampling structure and a pressure sampling structure through a carrier. The pressure sampling structure can collect the voltage and temperature of the component to be sampled, thereby reducing the volume of the sampling structure.

[0062] The following is combined with Figure 1 To the attached Figure 5 The structure and working principle of the battery information collection device and the battery device provided in the embodiment of the present application are described in detail.

[0063] Reference Figures 1 to 5 As shown, an embodiment of the present application provides a battery device, which may include several battery cells and a battery information collection device 1. The battery information collection device 1 may include a sampling structure 10 and a substrate 20. At least two sampling structures 10 are arranged at intervals along the extension direction of the substrate 20 and are electrically connected to the substrate 20. The pressure sampling structure 200 of the sampling structure 10 is connected to the battery cell. The sampling structure 10 can be arranged in a one-to-one correspondence with the battery cell to respectively collect the temperature and voltage of each battery cell. The substrate 20 is used to collect voltage data and temperature data of the sampling structure 10.

[0064] Alternatively, the battery device provided in the embodiment of the present application may include a plurality of battery cells and a sampling structure 10 , wherein the pressure sampling structure 200 of the sampling structure 10 is connected to the battery cells, and the sampling structure 10 is used to collect the temperature and voltage of the battery cells.

[0065] It should be noted that the battery device may be a battery pack, a battery module, a battery cluster, or other structures, which are not limited in the embodiments of the present application.

[0066] It is understood that in some embodiments, a battery device may be formed by at least two battery cells connected in series or in parallel. To facilitate monitoring of the voltage and temperature of a single battery cell, a sampling structure 10 or a battery information acquisition device 1 may be provided on the battery device. The battery information acquisition device 1 of the embodiment of the present application may include a substrate 20 and a sampling structure 10. One end of the sampling structure 10 is electrically connected to the substrate 20, and a plurality of sampling structures 10 are arranged at intervals along the substrate 20. The sampling structure 10 may be connected to the battery cell to collect the voltage and temperature of the battery cell. Subsequently, the temperature and voltage data collected by the sampling structure 10 may be transmitted to the substrate 20 and then to the battery sampling and execution unit of the battery management system. The battery sampling and execution unit of the battery management system can then manage the charge and discharge power of the battery device, battery abnormality alarms and protection, etc.

[0067] Among them, the substrate 20 can be an FPC (Flexible Printed Circuit), an FDC (Flexible Die-cutting Circuit), an FFC (Flexible Flat Cable) or a wiring harness, etc., which is not limited in the embodiment of the present application.

[0068] It should be noted that due to slight differences in the battery devices formed by assembling different types of battery cells, for example, the battery cells may include square battery cells, cylindrical battery cells, soft-pack battery cells and blade battery cells, wherein the square battery cell may have a negative pole and a positive pole, the square battery cell may also be provided with a negative pole, and the shell is used as the positive electrode, the two ends of the cylindrical battery cell respectively have a negative pole and a positive shell cover, and the soft-pack battery cell may be provided with two connecting pieces for leading out the positive and negative poles respectively. Therefore, the sampling structure 10 of the embodiment of the present application can be connected to the pole of the battery cell, or to the shell of the battery cell, or to the connecting piece of the battery cell, as long as the pressure sampling structure 200 of the sampling structure 10 is electrically connected to the battery cell.

[0069] In addition, for a battery device formed by assembling square cells or cylindrical cells, a busbar 2 can be used to connect multiple cells in series and in parallel. Therefore, the sampling structure 10 can be connected to the busbar 2, and the busbar 2 is connected to the pole, shell or connecting piece of the cell. In this way, the pressure sampling structure 200 of the sampling structure 10 and the cell can be electrically connected, and then the voltage of the cell can be collected through the pressure sampling structure 200, and the heat of the cell can be transferred to the pressure sampling structure 200. The structure of the battery information collection device 1 and the busbar 2 after welding can be specifically referred to. Figure 2 、 Figure 3 shown.

[0070] If the battery information collection device 1 and the busbar 2 are integrated into an integrated busbar by using methods such as heat pressing in related technologies, when any sampling structure 10 in the battery information collection device 1 fails, the entire integrated busbar needs to be scrapped. However, the sampling structure 10 of the embodiment of the present application can be connected to the substrate 20 and the busbar 2 by welding. When any sampling structure 10 fails, the problematic sampling structure 10 can be replaced with an intact sampling structure 10 more conveniently, and the entire integrated busbar will not be scrapped due to the failure of one sampling structure 10, thereby improving the maintainability of the sampling structure 10.

[0071] The following is combined with Figure 4 To the attached Figure 15 The structure and working principle of the sampling structure 10 provided in the embodiment of the present application are described.

[0072] Reference Figures 4 to 7As shown, specifically, the sampling structure 10 provided in the embodiment of the present application includes a carrier 100, a pressure sampling structure 200 and a temperature sampling structure 300. The pressure sampling structure 200 is located on one side of the carrier 100 and is connected to one end of the carrier 100. The pressure sampling structure 200 is used to obtain the voltage of the component to be sampled. The temperature sampling structure 300 is located on the other side of the carrier 100 and is connected to the pressure sampling structure 200, so that the carrier 100, the pressure sampling structure 200 and the temperature sampling structure 300 are integrated into an integral structure. The temperature sampling structure 300 is used to obtain the temperature of the component to be sampled by collecting the temperature of the pressure sampling structure 200.

[0073] In the present application, the carrier 100 serves as a carrier for the pressure sampling structure 200 and the temperature sampling structure 300, and the pressure sampling structure 200 and the temperature sampling structure 300 can be integrated together. In addition, the carrier 100 has a protective effect on other components of the sampling structure 10. The pressure sampling structure 200 and the temperature sampling structure 300 can be connected on opposite sides of the carrier 100. The pressure sampling structure 200 can be located at one end of the carrier 100 so that the pressure sampling structure 200 can extend out of the carrier 100 and then be connected to the part to be sampled, while the other end of the carrier 100 is used to contact the substrate 20. The temperature sampling structure 300 is connected to the pressure sampling structure 200. When the pressure sampling structure 200 collects the voltage of the part to be sampled, the heat of the part to be sampled can be transferred to the pressure sampling structure 200, and then the heat is transferred to the temperature sampling structure 300 through the pressure sampling structure 200. In this way, the temperature sampling structure 300 can obtain the temperature of the part to be sampled by obtaining the temperature of the pressure sampling structure 200.

[0074] Compared with the related art, the pressure sampling connection point and the temperature sampling and transfer point of the sampling structure 10 provided in the embodiment of the present application are combined into one, that is, the pressure sampling structure 200 serves as the pressure sampling connection point between the sampling structure 10 and the part to be sampled, and also serves as the temperature sampling and transfer point between the sampling structure 10 and the part to be sampled, thereby making it possible for the sampling structure 10 to no longer need to arrange additional temperature sampling and transfer points with the part to be sampled. This also makes it possible for the temperature sampling structure 300 to no longer need to arrange a large number of wiring harnesses, thereby reducing the structural complexity of the sampling structure 10 and reducing the volume of the sampling structure 10.

[0075] In addition, since the volume of the sampling structure 10 is reduced, a sampling structure 10 can be separately provided for each battery cell in the battery device to collect the voltage and temperature of each battery cell, thereby reducing the error of the sampling structure 10 and making the control of the battery management system more accurate.

[0076] The sampling structure 10 provided in the embodiment of the present application includes a carrier 100, a pressure sampling structure 200 and a temperature sampling structure 300. The carrier 100 is provided to carry the pressure sampling structure 200 and the temperature sampling structure 300, so that the carrier 100, the pressure sampling structure 200 and the temperature sampling structure 300 are integrated into a whole, thereby reducing the volume of the sampling structure 10. The pressure sampling structure 200 is provided to be connected to the sample to be sampled, so that the pressure sampling structure 200 serves as the pressure sampling connection point between the sampling structure 10 and the sample to be sampled, so as to collect the voltage of the sample to be sampled, and at the same time, the pressure sampling structure 200 As the temperature collection and transfer point between the sampling structure 10 and the piece to be sampled, the structure of the sampling structure 10 is simplified and the volume of the sampling structure 10 is reduced. By setting the temperature collection structure 300 to collect the temperature of the pressure collection structure 200 to obtain the temperature of the piece to be sampled, the sampling structure 10 provided in the embodiment of the present application can collect the voltage and temperature of the piece to be sampled. The sampling structure 10 has a simple structure and a small volume, thereby reducing the cost of the sampling structure 10. It also allows each battery cell in the battery device to be individually provided with a sampling structure 10, thereby improving the accuracy of the sampling structure 10.

[0077] The carrier 100 may be a flexible printed circuit (FPC), a flexible die-cutting circuit (FDC), a flexible flat cable (FFC), or a wiring harness. When the carrier 100 is one of the FPC, FDC, or FFC, the sampling structure 10 can transmit voltage data from the pressure sampling structure 200 and temperature data from the temperature sampling structure 300 through the carrier 100.

[0078] Alternatively, the carrier 100 may be a protective film made of a thin film material such as polyurethane or epoxy resin. When the carrier 100 is a protective film, the carrier 100 mainly serves to integrate the pressure collection structure 200 and the temperature collection structure 300 and to protect the internal structure of the carrier 100.

[0079] Continue to refer to Figures 4 to 7 As shown, in a possible embodiment, the sampling structure 10 of the embodiment of the present application further includes a reinforcing member 400, which is located on the side of the supporting member 100 facing away from the pressure sampling structure 200 and is connected to the supporting member 100, and the reinforcing member 400 is arranged around the outside of the temperature sampling structure 300.

[0080] In order to prevent the temperature collection structure 300 from being damaged, a reinforcement part 400 can be set on the outside of the temperature collection structure 300, and then the temperature collection structure 300 is protected by the reinforcement part 400, thereby preventing the temperature collection structure 300 from being damaged due to external force impact, thereby ensuring that the temperature collection structure 300 can always stably collect the temperature of the sample to be sampled.

[0081] The temperature sampling structure 300 may be a thermosensitive ceramic component, the resistance of which decreases as the temperature increases, and this characteristic can be used to measure the temperature of the sampled object.

[0082] Reference Figure 6 and Figure 7 As shown, in some embodiments, a through hole 410 is opened on the reinforcing piece 400 , a portion of the temperature collection structure 300 is located in the through hole 410 , and a gap is formed between the pressure collection structure 200 and the inner wall of the through hole 410 .

[0083] It should be understood that the reinforcement 400 can only provide mechanical protection for the heating structure 300, but cannot provide insulation protection for the heating structure 300. Therefore, after the heating structure 300 is set in the through hole 410 of the reinforcement 400, it is necessary to perform glue treatment on the gap between the heating structure 300 and the inner wall of the through hole 410 to encapsulate the heating structure 300 in the through hole 410, thereby preventing the heating structure 300 from contacting other components and causing a short circuit.

[0084] Reference Figures 6 to 8 As shown, in order to transmit the voltage data and temperature data of the sampling structure 10 to the substrate 20, in a possible embodiment, the sampling structure 10 of the present application further includes a transmission structure 500, which is disposed in the carrier 100, one end of the transmission structure 500 is electrically connected to the temperature sampling structure 300 and the pressure sampling structure 200, and the other end of the transmission structure 500 extends toward one end of the carrier 100 away from the pressure sampling structure 200.

[0085] In this way, by setting up the transmission structure 500, the voltage data of the pressure sampling structure 200 can be transmitted to the substrate 20, and the temperature data of the temperature sampling structure 300 can be transmitted to the substrate 20, respectively, so that the sampling structure 10 can realize the functions of collecting data and transmitting data, and the transmission structure 500 is set in the carrier 100, which can provide mechanical protection and insulation protection for the transmission structure 500.

[0086] In the above configuration, the carrier 100 may be a protective film, and the carrier 100 protects the transmission structure 500 disposed inside the carrier 100 , while the transmission structure 500 transmits temperature data and voltage data.

[0087] Alternatively, when the carrier 100 is an FPC, an FDC, or an FFC, the transmission structure 500 may be a wire integrated into the FPC, the FDC, or the FFC.

[0088] Reference Figure 7 and Figure 8As shown, in a specific implementation, the transmission structure 500 includes a temperature collection transmission component 510 and a pressure collection transmission component 520. One end of the temperature collection transmission component 510 is connected to the temperature collection structure 300, and one end of the pressure collection transmission component 520 is connected to the pressure collection structure 200. The temperature collection transmission component 510 and the pressure collection transmission component 520 are spaced apart in the carrier 100.

[0089] It should be understood that voltage data and temperature data need to be transmitted separately. Therefore, the transmission structure 500 may include a temperature transmission component 510 and a pressure transmission component 520. The temperature transmission component 510 and the pressure transmission component 520 are insulated. The temperature transmission component 510 is connected between the temperature collection structure 300 and the substrate 20, and then the temperature data of the temperature collection structure 300 is transmitted to the substrate 20 through the temperature transmission component 510. The pressure transmission component 520 is connected between the pressure collection structure 200 and the substrate 20, and then the voltage data of the pressure collection structure 200 is transmitted to the substrate 20 through the pressure transmission component 520.

[0090] Reference Figure 9 As shown, in a possible embodiment, the pressure collection transmission component 520 includes a first transmission section 521, a fuse protection section 522 and a second transmission section 523 connected in sequence, the first transmission section 521 is connected to the pressure collection structure 200, and the second transmission section 523 is used to connect to the substrate 20.

[0091] It is worth mentioning that when a short circuit or thermal runaway occurs inside the battery cell, the current of the battery cell will increase instantly and cause a short circuit, which may cause other electronic components to burn out. When the current of the battery cell is large, the battery management system needs to control the pressure sampling and transmission component 520 to cut off. Therefore, the pressure sampling and transmission component 520 of the embodiment of the present application can be provided with a fuse protection section 522. When the current of the battery cell corresponding to the sampling structure 10 is large, the fuse protection section 522 will automatically blow, thereby preventing the pressure sampling and transmission component 520 from overloading and causing damage to other electronic components.

[0092] Among them, the fuse protection section 522 can be a serpentine fuse, a narrow-diameter six-section fuse or a fuse component. The embodiment of the present application is not limited to this, as long as the fuse protection section 522 can reach the preset fuse current of the battery cell.

[0093] Reference Figure 6 、 Figure 7 、 Figure 10 and Figure 11As shown, in some embodiments, the carrier 100 includes a first carrier 110 and a second carrier 120 stacked on each other, and the transmission structure 500 is located between the first carrier 110 and the second carrier 120. The first carrier 110 is provided with a first opening 111 at a position opposite to the temperature collection structure 300, so that the temperature collection structure 300 is connected to the temperature collection transmission component 510 through the first opening 111, and the second carrier 120 is provided with a second opening 121 at a position opposite to the pressure collection transmission component 520, so that the pressure collection transmission component 520 is connected to the pressure collection structure 200 through the second opening 121.

[0094] In this way, it is convenient to dispose the transmission structure 500 in the carrier 100 , so that the carrier 100 can insulate and protect the transmission structure 500 .

[0095] Among them, the temperature collection structure 300 needs to be connected to the temperature collection transmission component 510, and the temperature collection structure 300 is located on the side of the first carrier 110 away from the second carrier 120. Therefore, a first opening 111 is opened at a position opposite to the first carrier 110 and the temperature collection structure 300, so that the first opening 111 connects the opposite sides of the first carrier 110, and thus the temperature collection structure 300 can be connected to the temperature collection transmission component 510, so that the temperature data of the temperature collection structure 300 is transmitted to the substrate 20 through the temperature collection transmission component 510.

[0096] The pressure collection structure 200 needs to be connected to the pressure collection transmission component 520, and the pressure collection structure 200 is located on the side of the second carrier 120 away from the first carrier 110. Therefore, a second opening 121 is opened at a position opposite to the second carrier 120 and the pressure collection structure 200, so that the second opening 121 connects the opposite sides of the second carrier 120, so that the pressure collection structure 200 can be connected to the pressure collection transmission component 520, so that the temperature data of the pressure collection structure 200 is transmitted to the substrate 20 through the pressure collection transmission component 520.

[0097] It should be noted that, in order to improve the connection reliability between the pressure collection structure 200 and the pressure collection transmission assembly 520 , two second openings 121 may be provided on the second supporting member 120 .

[0098] Reference Figure 10 and Figure 11As shown, in addition, in order to facilitate the welding of the temperature transmission component 510 and the pressure transmission component 520 with the substrate 20, a third opening 112 can be opened at the end of the first carrier 110 away from the pressure collection structure 200, and a fourth opening 122 can be opened at the end of the second carrier 120 away from the pressure collection structure 200, and the third opening 112 and the fourth opening 122 at least partially overlap, so that the end of the temperature transmission component 510 away from the pressure collection structure 200 and the end of the pressure transmission component 520 away from the pressure collection structure 200 can be exposed, thereby facilitating the welding of the temperature transmission component 510 and the substrate 20, as well as facilitating the welding of the pressure transmission component 520 and the substrate 20.

[0099] Reference Figure 6 and Figure 7 As shown, in some embodiments, the pressure sampling structure 200 can be connected to the pressure sampling transmission component 520 by welding, or, in other embodiments, the pressure sampling structure 200 includes a pressure sampling plate 210 and a thermally conductive and electrically conductive member 220, the thermally conductive and electrically conductive member 220 is located between the pressure sampling plate 210 and the supporting member 100, the thermally conductive and electrically conductive member 220 is connected to the pressure sampling transmission component 520, and the pressure sampling plate 210 is used to connect to the sample to be sampled.

[0100] In this way, after the sampling and pressure plate 210 is connected to the sampled part, the voltage and temperature of the sampled part can be collected. A thermal conductive and electrically conductive member 220 can be set between the sampling and pressure plate 210 and the carrier 100, so that an electrical connection is established between the sampling and pressure plate 210 and the pressure sampling transmission component 520 through the thermal conductive and electrically conductive member 220. The thermal conductive and electrically conductive member 220 can also improve the heat conduction efficiency between the sampling and pressure plate 210 and the carrier 100, thereby reducing the heat loss of the sampled part in the process of transferring heat to the temperature sampling structure 300, thereby improving the accuracy of the temperature sampling structure 300.

[0101] The pressure plate 210 may be a nickel plate, a steel plate, a copper plate, an aluminum plate, or a copper-aluminum alloy plate, which is not limited in the present embodiment. The heat-conducting and electrically conductive member 220 may be an electrically conductive adhesive.

[0102] Reference Figure 7 、 Figures 12 to 15 As shown, in order to facilitate connection with the sample to be sampled, the pressure sampling plate 210 needs to extend outside the carrier 100. Therefore, in one possible embodiment, the pressure sampling plate 210 includes a first connection area 211 and a second connection area 212 that are interconnected. The projection of the first connection area 211 in the thickness direction of the carrier 100 is located inside the carrier 100, and the projection of the second connection area 212 in the thickness direction of the carrier 100 is located outside the carrier 100. The first connection area 211 is connected to the pressure sampling transmission assembly 520 via the thermal and electrical conductive member 220, and the second connection area 212 is used to connect to the sample to be sampled. As a result, the second connection area 212 can be more conveniently connected to different types of battery cells.

[0103] Reference Figures 12 to 14 As shown, in some embodiments, the extension direction of the first connection area 211 is consistent with the extension direction of the second connection area 212, and the extension direction of the first connection area 211 is consistent with the extension direction of the carrier 100. Alternatively, the extension direction of the first connection area 211 and the extension direction of the carrier 100 form an angle.

[0104] That is, in the above arrangement, the sampling and pressing sheet 210 may be rectangular, and the second connection area 212 may extend along the extension direction of the carrier 100 . For example, this arrangement may be used when the sampling structure 10 is connected to a square or cylindrical battery cell.

[0105] Alternatively, the sampling and pressing sheet 210 can be rectangular, and the second connection area 212 can extend in a direction perpendicular to the extension direction of the carrier 100. This approach can be used when the sampling structure 10 is connected to a blade-shaped battery cell. The second connection area 212 can be set between the end faces of two adjacent battery cells and connected to one of the battery cells.

[0106] In a possible embodiment, the extension directions of the first connection area 211 and the second connection area 212 form an angle, and the extension direction of the first connection area 211 is consistent with the extension direction of the carrier 100 .

[0107] For example, the sampling and pressing sheet 210 may be L-shaped, and the second connection area 212 may extend in a direction perpendicular to the extension direction of the carrier 100 . This approach may be used when the sampling structure 10 is connected to a blade-shaped battery cell.

[0108] Reference Figure 15 As shown, in one possible embodiment, two second connection areas 212 are located on either side of the first connection area 211 along the extension direction of the carrier 100, and at least one second connection area 212 is used to connect to the sampled object. This arrangement can improve the flexibility of connecting the sampling structure 10 to the battery cell, thereby facilitating the flexible setting of the connection position of the sampling structure 10 and the battery cell according to the space within the battery device.

[0109] In addition, the present invention also provides an electrical device, including an electrical device and a battery device, wherein the battery device is used to provide electrical energy to the electrical device. The structure and working principle of the battery device have been described in detail in the above embodiments and will not be repeated here.

[0110] For example, the electrical equipment may be a vehicle, the electrical device may be an electric motor, the battery device may provide electrical energy to the electric motor, and then the vehicle is driven by the electric motor. Alternatively, the electrical equipment may be a charging pile, the electrical device may be an energy storage cabinet, and the battery device may be used to provide electrical energy to the energy storage cabinet, and then power the charging pile.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A sampling structure, characterized in that: include: a carrier (100); A pressure sampling structure (200), the pressure sampling structure (200) is used to obtain the voltage of the component to be sampled; The temperature sampling structure (300) is integrated into a whole structure, wherein the bearing member (100), the pressure sampling structure (200) and the temperature sampling structure (300) are used to obtain the temperature of the sample to be sampled.

2. The sampling structure according to claim 1, characterized in that: The temperature sampling structure (300) is used to obtain the temperature of the sampled part by sampling the temperature of the pressure sampling structure (200).

3. The sampling structure according to claim 1, characterized in that: The pressure collecting structure (200) is located on one side of the bearing member (100) and is connected to one end of the bearing member (100); The temperature collection structure (300) is located on the other side of the bearing member (100) and is connected to the pressure collection structure (200).

4. The sampling structure according to any one of claims 1 to 3, characterized in that: Also includes: a reinforcing member (400), the reinforcing member (400) being located on a side of the bearing member (100) facing away from the pressure collecting structure (200) and being connected to the bearing member (100); The reinforcing member (400) is arranged around the outside of the temperature collecting structure (300).

5. The sampling structure according to claim 4, characterized in that: A through hole (410) is provided on the reinforcing piece (400), a portion of the temperature collection structure (300) is located in the through hole (410), and a gap is provided between the pressure collection structure (200) and the inner side wall of the through hole (410).

6. The sampling structure according to any one of claims 1 to 3, characterized in that: Also includes: A transmission structure (500) is provided in the carrier (100), one end of the transmission structure (500) is electrically connected to the temperature collection structure (300) and the pressure collection structure (200), and the other end of the transmission structure (500) extends toward the carrier (100) away from one end of the pressure collection structure (200).

7. The sampling structure according to claim 6, characterized in that: The transmission structure (500) includes a temperature sampling transmission component (510) and a pressure sampling transmission component (520), one end of the temperature sampling transmission component (510) is connected to the temperature sampling structure (300), and one end of the pressure sampling transmission component (520) is connected to the pressure sampling structure (200); The temperature sampling transmission component (510) and the pressure sampling transmission component (520) are arranged at intervals within the carrier (100).

8. The sampling structure according to claim 7, characterized in that: The pressure sampling transmission assembly (520) comprises a first transmission section (521), a fuse protection section (522), and a second transmission section (523) connected in sequence, wherein the first transmission section (521) is connected to the pressure sampling structure (200).

9. The sampling structure according to claim 7 or 8, characterized in that: The carrier (100) comprises a first carrier (110) and a second carrier (120) stacked on each other, and the transmission structure is located between the first carrier (110) and the second carrier (120); A first opening (111) is provided at a position of the first bearing member (110) opposite to the temperature collection structure (300), so that the temperature collection structure (300) is connected to the temperature collection transmission component (510) through the first opening (111); A second opening (121) is provided at a position of the second bearing member (120) opposite to the pressure collection and transmission component (520), so that the pressure collection and transmission component (520) is connected to the pressure collection structure (200) through the second opening (121).

10. The sampling structure according to claim 6, characterized in that: The pressure sampling structure (200) comprises a pressure sampling piece (210) and a heat-conducting and electrically conductive member (220), wherein the heat-conducting and electrically conductive member (220) is located between the pressure sampling piece (210) and the carrier (100), the heat-conducting and electrically conductive member (220) is connected to the transmission structure (500), and the pressure sampling piece (210) is used to be connected to the sample to be sampled.

11. The sampling structure according to claim 10, characterized in that: The sampling and pressing piece (210) comprises a first connection area (211) and a second connection area (212) which are connected to each other. The projection of the first connection area (211) in the thickness direction of the carrier (100) is located inside the carrier (100), and the projection of the second connection area (212) in the thickness direction of the carrier (100) is located outside the carrier (100). The first connection area (211) is connected to the transmission structure (500) through the thermal and electrical conductive member (220), and the second connection area (212) is used to connect to the sample to be sampled.

12. The sampling structure according to claim 11, characterized in that: The extending direction of the first connecting area (211) is consistent with the extending direction of the second connecting area (212), and the extending direction of the first connecting area (211) is consistent with the extending direction of the bearing member (100); Alternatively, an extension direction of the first connection area (211) and an extension direction of the supporting member (100) form an angle.

13. The sampling structure according to claim 11, characterized in that: An extension direction of the first connection area (211) and an extension direction of the second connection area (212) form an included angle, and the extension direction of the first connection area (211) is consistent with the extension direction of the carrier (100).

14. The sampling structure according to claim 12 or 13, characterized in that: The two second connection areas (212) are respectively located on both sides of the first connection area (211) along the extension direction of the carrier (100), and at least one of the second connection areas (212) is used to connect with the sample to be sampled.

15. A battery information collection device, characterized in that: The invention comprises a substrate (20) and a plurality of sampling structures (10) according to any one of claims 1 to 14, wherein one end of the sampling structure (10) is electrically connected to the substrate (20), and the plurality of sampling structures (10) are arranged at intervals along the substrate (20).

16. A battery device, characterized in that: The battery information collection device comprises a plurality of battery cells and a sampling structure (10) according to any one of claims 1 to 14 or a battery information collection device (1) according to claim 15, wherein the sampling structure (10) is connected to the battery cells.

17. An electrical device, characterized in that: The device comprises an electric device and the battery device as claimed in claim 16, wherein the battery device is used to provide electric energy for the electric device.

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