CN221427820U - Battery sampling device, battery and power utilization device - Google Patents

Abstract

The application relates to the technical field of related components of batteries and discloses a battery sampling device, a battery and an electricity utilization device. When the temperature acquisition assembly is damaged or can not be used for other reasons, the temperature acquisition assembly can be detached from the sampling circuit board, and other temperature acquisition assemblies can be replaced on the sampling circuit board, so that the sampling circuit board can be used continuously, and only the unusable temperature acquisition assembly is required to be scrapped, the scrapping cost of the temperature acquisition related components is reduced, and the battery production and maintenance cost is reduced.

Description

Battery sampling device, battery and power utilization device

Technical Field

The present application relates to the field of battery related components, and in particular, to a battery sampling device, a battery and an electric device.

Background

This section provides merely background information related to the application, which is not necessarily prior art.

Batteries are capable of storing and providing electrical energy and are widely used in a variety of fields. The production cost of batteries has been a focus of attention in battery development. In some technologies, temperature collection needs to be performed on battery cells in a battery so as to manage the battery, but the cost of discarding damaged temperature collection related components is high, and the production cost of the battery is greatly affected.

Disclosure of utility model

In view of the above, the present application provides a battery sampling device, so as to alleviate the problem of higher production cost of the battery by reducing the scrapping cost of the temperature acquisition related components.

The first aspect of the present application proposes a battery sampling device, which includes a sampling circuit board and a temperature acquisition assembly, wherein the temperature acquisition assembly is electrically connected with the sampling circuit board, and the temperature acquisition assembly is detachably connected with the sampling circuit board.

According to the technical scheme, the temperature acquisition assembly is detachably connected with the sampling circuit board, when the temperature acquisition assembly is damaged or cannot be used for other reasons, the temperature acquisition assembly can be detached from the sampling circuit board, and other temperature acquisition assemblies are replaced on the sampling circuit board, so that the sampling circuit board can be continuously used, only the unusable temperature acquisition assembly is required to be scrapped, the scrapping cost of temperature acquisition related components is reduced, and the battery production and maintenance cost is reduced.

In some embodiments of the present application, the temperature acquisition assembly is provided with a first connection terminal, and the sampling circuit board is provided with a second connection terminal, and the second connection terminal is plugged with the first connection terminal and is in conductive connection. Through first connecting terminal and second connecting terminal grafting connection and electrically conductive, can be comparatively convenient with temperature sampling subassembly and sampling circuit board connection, convenient operation has improved battery sampling device's packaging efficiency.

In some embodiments of the present application, the temperature acquisition assembly includes a carrier circuit board and a temperature sensing element, the temperature sensing element is disposed on the carrier circuit board, and the first connection terminal is disposed on the carrier circuit board and is electrically connected to the temperature sensing element. Through integrating temperature sensing element and first connecting terminal in carrier circuit board for temperature acquisition subassembly has stable structure, is favorable to temperature acquisition subassembly and sampling circuit board's equipment, improves battery sampling device's packaging efficiency.

In some embodiments of the present application, the temperature collecting assembly further includes a first housing, a receiving groove is defined in the first housing, one end of the receiving groove has a first opening, the carrier circuit board and the temperature sensing element are disposed in the receiving groove, and the first connection terminal extends toward the end where the first opening is located. According to the embodiment, the first shell is arranged to support and fix the temperature sensing element, so that the temperature sensing element is reduced from being influenced by deformation of other related components, and the possibility of damage to the temperature sensing element is reduced.

In some embodiments of the present application, the battery sampling device further includes a second housing, an accommodating space is provided on the second housing, the second connection terminal is disposed in the accommodating space, one end of the second connection terminal is electrically connected with the sampling circuit board, and the other end of the second connection terminal is plugged with the first connection terminal. Through setting up the second casing, can improve the guard action to second connecting terminal to, the second casing can play the supporting role to second connecting terminal, makes the comparatively stable fixed of second connecting terminal, can improve the convenience of second connecting terminal and first connecting terminal grafting like this.

In some embodiments of the application, the first housing is plug-in connected with the second housing. Through the plug-in connection of the first shell and the second shell, the connection operation between the sampling circuit board and the temperature sampling assembly is convenient, and the assembly efficiency of the battery sampling device is improved. The scheme of pegging graft of this embodiment first casing and second casing can also combine first binding post and the scheme of pegging graft of second binding post to use jointly, like this through manifold grafting, can also improve the connection stability between sampling circuit board and the temperature sampling subassembly, and then improve battery sampling device's reliability.

In some embodiments of the present application, the first housing is inserted into the accommodating space, the first connection terminal is provided with a slot, and the second connection terminal is inserted into the slot; or, the second connecting terminal is provided with a slot, the first connecting terminal is inserted into the slot, and the second shell is inserted into the accommodating groove. The temperature acquisition assembly is connected with the second connecting terminal and the second shell, double-layer interlocking plug-in connection can be formed, connection stability between the sampling circuit board and the temperature sampling assembly can be improved, and reliability of the battery sampling device is further improved.

In some embodiments of the application, a sealant is filled between the second connection terminal and the second housing; and/or sealant is filled between the carrier circuit board and the first shell and between the temperature sensing element and the first shell. Through setting up the sealant in first casing, can improve the barrier propterty of temperature sampling subassembly and can improve the connection stability between temperature sensing element and the carrier circuit board. Through setting up the sealant in the second casing, can improve second connecting terminal's barrier propterty and connection stability.

In some embodiments of the present application, a crimp member is provided on the sampling circuit board, the crimp member crimp-fixes the second connection terminal to the sampling circuit board, and the second connection terminal is electrically connected with the sampling circuit board through the crimp member. The second connecting terminal is fixed on the sampling circuit board through the crimping piece, and the structure is simple. In the mode of directly welding second connecting terminal and sampling circuit board, when the rosin joint appears between second connecting terminal and the sampling circuit board, often lead to sampling circuit board and second connecting terminal all abandonment, and this embodiment is fixed in on the sampling circuit board with second connecting list through the crimping spare, reduced second connecting terminal and sampling circuit board and connected the possibility of inefficacy because the rosin joint, improved the connection stability and the reliability that second connecting terminal and sampling circuit board are connected, and even appear between second connecting terminal and the sampling circuit board and appear connecting the inefficacy, because second connecting terminal and sampling circuit board also do not need all abandonment, reduced battery sampling device's abandonment cost.

In some embodiments of the present application, a detection circuit is disposed on the carrier circuit board, and the temperature sensing element is electrically connected to the first connection terminal through the detection circuit. According to the embodiment, the detection circuit is arranged on the carrier circuit board, so that wiring among the components is simple, the condition of disordered wiring is not easy to occur, and assembly of each component in the temperature acquisition assembly is facilitated.

In some embodiments of the application, the temperature sensing element is soldered to and conductively connected with the detection circuit.

In some embodiments of the application, the temperature sensing element and the detection circuit are welded, so that the mechanical connection of the temperature sensing element and the detection circuit can be realized, the conduction can be realized conveniently, and the operation is convenient.

In some embodiments of the application, the sampling circuit board comprises a flexible circuit board, and the temperature acquisition assembly is detachably connected to the flexible circuit board; and/or the carrier circuit board comprises a hard circuit board, and the temperature sensing element and the first connecting terminal are arranged on the hard circuit board. The sampling circuit board can improve the adaptability of the sampling circuit board in a plurality of battery cells by using the flexible circuit board, and is beneficial to flexible arrangement of the sampling circuit board. The carrier circuit board adopts a hard circuit board, can play a good supporting role on the temperature sensing element, reduces the influence of deformation of other related components on the temperature sensing element, and reduces the possibility of damage to the temperature sensing element.

A second aspect of the present application provides a battery, including a battery cell and a battery sampling device according to the present application or any embodiment of the present application, where a temperature acquisition component of the battery sampling device is configured to acquire a temperature of the battery cell.

A third aspect of the present application provides an electrical device comprising a battery according to the present application or any of the embodiments of the present application, the battery being adapted to provide electrical energy.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 schematically illustrates a schematic structural view of a vehicle provided by some embodiments of the present application;

Fig. 2 schematically illustrates an exploded view of a battery provided in some embodiments of the application;

Fig. 3 schematically illustrates an exploded structure of a battery cell according to some embodiments of the present application;

FIG. 4 schematically illustrates a schematic diagram of a battery sampling apparatus according to some embodiments of the application;

FIG. 5 schematically illustrates a split schematic of a battery sampling apparatus according to some embodiments of the application;

FIG. 6 schematically illustrates a split schematic of a battery sampling apparatus according to some embodiments of the application;

FIG. 7 schematically illustrates a schematic view of a temperature acquisition assembly according to some embodiments of the application;

Fig. 8 schematically illustrates an assembly schematic of a sampling circuit board, a second connection terminal, and a second housing of some embodiments of the present application;

Fig. 9 schematically illustrates an internal schematic view of a battery sampling apparatus in a split state according to some embodiments of the present application.

Reference numerals in the specific embodiments are as follows:

1000. A vehicle;

100. A battery; 10. a case; 11. a first portion; 12. a second portion; 20. a battery cell; 21. an end cap; 211. an electrode terminal; 22. a housing; 23. a cell assembly; 231. a tab;

200. A controller;

300. a motor;

500. A sampling circuit board; 510. a second connection terminal; 511. a slot; 520. a crimp member; 521. a clamping jaw; 530. a second housing; 531. an accommodation space;

600. A temperature acquisition assembly; 610. a first connection terminal; 620. a carrier circuit board; 621. a detection circuit; 630. a temperature sensing element; 640. a first housing; 641. a receiving groove; 642. a first opening; 643. and (5) sealing glue.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" 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 appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

The battery can store and provide electric energy, is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and a plurality of fields such as military equipment and aerospace.

The reliability of a battery is a relatively important indicator of the battery. In order to improve the reliability of the battery, the battery may be managed, including thermal management of the battery, to reduce the possibility of adverse effects of overheating of the battery. Thermal management of a battery generally requires temperature acquisition of battery cells in the battery to determine whether the battery cells are overheated or directly perform thermal management on the battery cells according to the acquired temperature information.

It has been found that in some techniques, the scrapping cost of the temperature acquisition related components is high, resulting in high production cost of the battery. Further research has found that the sampling circuit board is welded to the temperature acquisition assembly for sampling the temperature of each battery cell, and when one temperature acquisition assembly fails or cannot be used for other reasons, the whole sampling circuit board and the temperature acquisition assembly connected with the sampling circuit board are generally discarded, which is an important factor that causes the scrapping cost of the temperature acquisition related components to be high.

Based on the above findings, the application provides a battery sampling device, which comprises a sampling circuit board and a temperature acquisition component, wherein the temperature acquisition component is detachably connected with the sampling circuit board.

Through temperature acquisition subassembly detachably connect in sampling circuit board, when finding that certain temperature acquisition subassembly is unusable, can dismantle temperature acquisition subassembly from sampling circuit board to change new temperature acquisition subassembly on sampling circuit board, only need scrap temperature acquisition subassembly, sampling circuit board can continue to use, reduced the cost of scrapping of temperature acquisition related component, make the manufacturing cost of battery correspondingly reduce.

The battery disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the electric devices. The power supply system with the battery and the like disclosed by the application can be used for forming the power utilization device, so that the cost of the power utilization device is reduced, and the reliability of the power utilization device for acquiring relevant parameters of the battery is improved.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 schematically illustrates a schematic structural diagram of a vehicle according to some embodiments 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-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 2, fig. 2 schematically illustrates an exploded view of a battery provided in some embodiments of the present application. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is accommodated in the case 10. The case 10 is used to provide an accommodating space for the battery cell 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 being overlapped with each other, the first portion 11 and the second portion 12 together defining an accommodating space for accommodating the battery cell 20. The second portion 12 may be a hollow structure with one end opened, the first portion 11 may be a plate-shaped structure, and the first portion 11 covers the opening side of the second portion 12, so that the first portion 11 and the second portion 12 together define a containing space; the first portion 11 and the second portion 12 may be hollow structures each having an opening at one side, and the opening side of the first portion 11 is engaged with the opening side of the second portion 12. Of course, the case 10 formed by the first portion 11 and the second portion 12 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the battery 100, the plurality of battery cells 20 may be connected in series, parallel or a series-parallel connection, wherein the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 20 in series or parallel or series-parallel connection, and a plurality of battery modules are then connected in series or parallel or series-parallel connection to form a whole and are accommodated in the case 10.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, fig. 3 is a schematic diagram illustrating an exploded structure of a battery cell according to some embodiments of the application. The battery cell 20 refers to the smallest unit constituting the battery. As shown in fig. 3, the battery cell 20 includes an end cap 21, a housing 22, a cell assembly 23, and other functional components.

The end cap 21 refers to a member that is covered at the opening of the case 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 may be adapted to the shape of the housing 22 to fit the housing 22. Optionally, the end cover 21 may be made of a material (such as an aluminum alloy) with a certain hardness and strength, so that the end cover 21 is not easy to deform when being extruded and collided, so that the battery cell 20 can have higher structural strength, and the safety performance can be improved. The end cap 21 may be provided with a functional part such as an electrode terminal 211. The electrode terminals 211 may be used to electrically connect with the cell assembly 23 for outputting or inputting electric power of the battery cell 20. The material of the end cap 21 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application. In some embodiments, insulation may also be provided on the inside of the end cap 21, which may be used to isolate electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. By way of example, the insulation may be plastic, rubber, or the like.

The housing 22 is an assembly for mating with the end cap 21 to form the internal environment of the battery cell 20, where the internal environment may be formed to house the cell assembly 23, electrolyte, and other components. The case 22 and the end cap 21 may be separate members, and an opening may be provided in the case 22, and the interior of the battery cell 20 may be formed by covering the opening with the end cap 21 at the opening. It is also possible to integrate the end cap 21 and the housing 22, but specifically, the end cap 21 and the housing 22 may form a common connection surface before other components are put into the housing, and when it is necessary to encapsulate the inside of the housing 22, the end cap 21 is then put into place with the housing 22. The housing 22 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 may be determined according to the specific shape and size of the cell assembly 23. The material of the housing 22 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application.

The cell assembly 23 is a component in which electrochemical reactions occur in the battery cells 20. One or more battery cell assemblies 23 may be contained within the housing 22. The cell assembly 23 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive electrode sheet and the negative electrode sheet having active material constitute the main body portion of the cell assembly, and the portions of the positive electrode sheet and the negative electrode sheet having no active material constitute the tab 231, respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or located at two ends of the main body portion respectively. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab 231 is connected to the electrode terminal to form a current loop.

The Battery 100 may further include a Battery management system, i.e., a BMS (Battery MANAGEMENT SYSTEM), which can intelligently manage and maintain the respective Battery cells 20, reduce the possibility of overcharge and overdischarge of the Battery 100, extend the service life of the Battery 100, monitor the state of the Battery 100, and the like.

According to some embodiments of the present application, as shown in fig. 4 to 6, fig. 4 schematically illustrates a schematic diagram of a battery sampling apparatus according to some embodiments of the present application, fig. 5 schematically illustrates a split schematic diagram of a battery sampling apparatus according to some embodiments of the present application, fig. 6 schematically illustrates a split schematic diagram of a battery sampling apparatus according to some embodiments of the present application, and an embodiment of the present application provides a battery sampling apparatus including a sampling circuit board 500 and a temperature acquisition assembly 600. The temperature acquisition assembly 600 is electrically connected with the sampling circuit board 500, and the temperature acquisition assembly 600 is detachably connected to the sampling circuit board 500.

It should be noted that, in fig. 4 to 6, the sampling circuit board 500 is only a part of the structure diagram for better understanding the technical solution through the drawings. In the following figures, which each relate to a sampling circuit board 500, only a portion of the sampling circuit board 500 is illustrated.

The battery sampling device is used for collecting temperature information of the battery monomers.

The temperature acquisition assembly 600 is configured to be disposed corresponding to a battery cell and is capable of sensing a temperature of the battery cell, for example, the temperature acquisition assembly 600 may be disposed on the housing 22 of the battery cell, and the temperature of the housing 22 of the battery cell is measured as temperature information of the battery cell. The temperature acquisition assembly 600 may specifically be a temperature sensing element 630, e.g., a temperature sensor or the like.

The sampling circuit board 500 is a circuit board for acquiring and transmitting temperature information, and a corresponding control circuit is arranged on the sampling circuit board, specifically, the sampling circuit board 500 acquires the temperature of the battery cell through the temperature acquisition assembly 600, the temperature information acquired by the sampling circuit board 500 is transmitted in the corresponding sampling circuit in a signal mode, and the sampling circuit board 500 can transmit the acquired signal to the battery management system. The sampling circuit board 500 may be mounted at one end of the plurality of battery cells through an insulating plate. The sampling circuit board 500 may be a flexible circuit board (flexible circuit board: flexible Printed Circuit, abbreviated as FPC), which is a flexible printed circuit board made of polyimide or polyester film as a base material and has high reliability and excellent flexibility. The flexible circuit board has high packing density, small volume and light weight, and because of high-density assembly and reduced connecting lines between parts (including parts), the reliability is increased, the wiring layer can be increased, and then the elastic design is increased.

The temperature collection assembly 600 is detachably connected to the sampling circuit board 500, which means that the temperature collection assembly 600 can be detached from the sampling circuit board 500, and the temperature collection assembly 600 and the sampling circuit board 500 cannot be damaged due to the detachment operation, in other words, the sampling circuit board 500 and the temperature collection assembly 600 can be detached and assembled for many times, and the influence of the sampling circuit board 500 and the temperature collection assembly 600 cannot be affected. The temperature acquisition assembly 600 may be mounted on the sampling circuit board 500 in a convenient manner, such as interference plugging, snap connection, and the like.

The temperature acquisition assembly 600 of this embodiment is detachably connected with the sampling circuit board 500, when the temperature acquisition assembly 600 is damaged or can't be used because of other reasons, can dismantle the temperature acquisition assembly 600 from the sampling circuit board 500 to on the sampling circuit board 500 change other temperature acquisition assemblies 600 can, sampling circuit board 500 can continue to use, and only need scrap the temperature acquisition assembly 600 that can't be used, reduced the cost of scrapping of the relevant component of temperature acquisition, reduced battery 100 production and cost of maintenance. Meanwhile, in the case that the sampling circuit board 500 is damaged, only the sampling circuit board 500 may be replaced, the temperature acquisition assembly 600 may be used continuously, and the production and maintenance costs of the battery 100 may be reduced.

According to some embodiments of the present application, as shown in fig. 7 to 9, fig. 7 schematically illustrates a schematic diagram of a temperature acquisition assembly according to some embodiments of the present application, fig. 8 is an assembled schematic diagram of a sampling circuit board, a second connection terminal, and a second housing according to some embodiments of the present application, and fig. 9 schematically illustrates an internal schematic diagram of a battery sampling device according to some embodiments of the present application in a split state, optionally, the temperature acquisition assembly 600 is provided with a first connection terminal 610, and the sampling circuit board 500 is provided with a second connection terminal 510, and the second connection terminal 510 is plugged into and electrically connected with the first connection terminal 610.

The first connection terminal 610 and the second connection terminal 510 are each a member capable of conducting electricity, and may be a metal member, for example, a member made of copper or aluminum. The plug connection between the first connection terminal 610 and the second connection terminal 510 may be a removable interference fit plug. Specifically, the first connection terminal 610 may be provided with a slot 511, and the second connection terminal 510 is inserted into the slot 511; the second connection terminal 510 may be provided with a slot 511, and the first connection terminal 610 may be inserted into the slot 511; the first connection terminal 610 and the second connection terminal 510 may be provided with slots 511, and the first connection terminal 610 and the second connection terminal 510 may be inserted into the slots 511 of each other to form a mutually inserted structure. The slot 511 may be disposed on an end surface of the first connection terminal 610 facing the second connection terminal 510 and configured as a slot opening toward the second connection terminal 510, or may be disposed on a side surface of the first connection terminal 610 and configured as a slot structure; similarly, the slot 511 may be provided on the end face of the second connection terminal 510 facing the first connection terminal 610 and provided as a slot opening toward the first connection terminal 610, or may be provided on the side face of the second connection terminal 510 and provided as a slot structure.

The first connection terminal 610 may be welded to the temperature sensing element 630 or connected through the detection circuit 621, and the second connection terminal 510 may be welded to or pressure-bonded to the sampling circuit board 500.

In this embodiment, the first connection terminal 610 and the second connection terminal 510 are connected in an inserting manner and are conductive, so that the temperature sampling assembly and the sampling circuit board 500 can be connected relatively conveniently, the operation is convenient, and the assembly efficiency of the battery sampling device is improved.

According to some embodiments of the present application, referring to fig. 7 and 9, alternatively, the temperature acquisition assembly 600 includes a carrier circuit board 620 and a temperature sensing element 630, the temperature sensing element 630 is disposed on the carrier circuit board 620, and the first connection terminal 610 is disposed on the carrier circuit board 620 and is electrically connected to the temperature sensing element 630.

The carrier circuit board 620 is a circuit board, which is used as a carrier for arranging the temperature sensing element 630 and the first connection terminal 610, the temperature sensing element 630 may be directly connected with the first connection terminal 610 in a conductive manner, or may be connected with the detection circuit 621 in a conductive manner, the detection circuit 621 may be arranged on the circuit board, specifically, the detection circuit 621 may be formed on the circuit board by etching, printing, or the like. The carrier circuit board 620 may be a rigid circuit board or a flexible circuit board. The rigid circuit board is also called a rigid circuit board, and is made of a rigid substrate material, such as a glass fiber epoxy resin material, an aluminum substrate and the like, and the circuit board is generally not bendable, firm in structure, good in stability and low in cost.

The temperature sensing element 630 may be a thermistor (Negative Temperature Coefficient thermistor, abbreviated as NTC) or the like. The temperature sensing element 630 may be disposed on the carrier circuit board 620 by soldering.

The first connection terminal 610 may be soldered to the carrier circuit board 620, or may be integrally formed with the detection wire of the carrier circuit board 620.

By integrating the temperature sensing element 630 and the first connection terminal 610 on the carrier circuit board 620, the temperature acquisition assembly 600 has a stable structure, which is beneficial to the assembly of the temperature acquisition assembly 600 and the sampling circuit board 500, and improves the assembly efficiency of the battery sampling device.

According to some embodiments of the present application, as shown in fig. 7, optionally, the temperature collecting assembly 600 includes a first housing 640, a receiving groove 641 is defined in the first housing 640, one end of the receiving groove 641 has a first opening 642, the carrier circuit board 620 and the temperature sensing element 630 are disposed in the receiving groove 641, and the first connection terminal 610 extends toward the end where the first opening 642 is located.

The first housing 640 may be an insulating housing, such as a plastic housing, which may protect the temperature sensing element 630 and the carrier circuit board 620. The receiving groove 641 is a groove-like space for receiving the carrier circuit board 620 and the temperature sensing element 630, and may be formed by being integrally formed on the first housing 640.

The carrier circuit board 620 may be fastened and fixed in the first housing 640, so as to achieve the relative fixation of the carrier circuit board 620 and the temperature sensing element 630 and the first housing 640.

The first connection terminal 610 extends toward an end where the first opening 642 is located, and it is understood that at least a portion of the first connection terminal 610 may be exposed by the first opening 642 such that the first connection terminal 610 may be connected to and electrically conductive with the second connection terminal 510. The first connection terminal 610 may be disposed at an end of the carrier circuit board 620 corresponding to the first opening 642, and the second connection terminal 510 may be connected to the first connection terminal 510 through the first opening 642.

In some technologies, the temperature sensing element 630 is directly connected with the flexible circuit board, and since the flexible circuit board has no supporting effect on the temperature sensing element 630 basically, when the flexible circuit board is deformed, the deformation is transmitted to the temperature sensing element 630, so that the temperature sensing element 630 is damaged. The first housing 640 is provided to support and fix the temperature sensing element 630, so that the temperature sensing element 630 is reduced from being deformed by other related components, and the damage possibility of the temperature sensing element 630 is reduced.

According to some embodiments of the present application, optionally, as shown in fig. 8, the battery sampling device further includes a second housing 530, an accommodating space 531 is provided on the second housing 530, the second connection terminal 510 is disposed in the accommodating space 531, one end of the second connection terminal 510 is electrically connected to the sampling circuit board 500, and the other end of the second connection terminal 510 is plugged into the first connection terminal 610.

The second housing 530 may be a housing made of an insulating material, for example, a plastic housing, which may protect the second connection terminal 510. The accommodating space 531 is a space for accommodating the second connection terminal 510, and in some cases, the accommodating space 531 may also accommodate a position where the sampling circuit board 500 is connected to the second connection terminal 510, and the accommodating space 531 may be formed by being integrally formed on the second case 530. The receiving space 531 may be a structure having both ends penetrated when the second connection terminal 510 is assembled, so that the second connection terminal 510 is disposed in the second case 530 and the second connection terminal 510 may be connected to the sampling circuit board 500 and the temperature sampling assembly, respectively.

By providing the second housing 530, the protection effect on the second connection terminal 510 can be improved, and the second housing 530 can support the second connection terminal 510, so that the second connection terminal 510 is stably fixed, and the convenience of plugging the second connection terminal 510 with the first connection terminal 610 can be improved.

Optionally, according to some embodiments of the application, as shown in fig. 4, the first housing 640 is plug-connected with the second housing 530.

The first housing 640 and the second housing 530 may be detachably connected, and the first housing 640 and the second housing 530 may be fixed relatively when connected by plugging.

In this embodiment, the first housing 640 is in plug connection with the second housing 530, so that the connection operation between the sampable circuit board 500 and the temperature sampling assembly is facilitated, and the assembly efficiency of the battery sampling device is improved. The plugging scheme of the first housing 640 and the second housing 530 in this embodiment can be used together with the plugging scheme of the first connection terminal and the second connection terminal, so that the connection stability between the sampling circuit board 500 and the temperature sampling assembly can be improved through multiple plugging, and the reliability of the battery sampling device can be further improved.

According to some embodiments of the present application, optionally, the first housing 640 is inserted into the accommodating space 531, the first connection terminal 610 is provided with a slot 511, and the second connection terminal 510 is inserted into the slot 511; or, the second connection terminal 510 is provided with a slot 511, the first connection terminal 610 is inserted into the slot 511, and the second housing 530 is inserted into the receiving groove 641.

In one implementation, the second housing 530 has a larger thickness and a smaller width and the first housing 640 has a smaller thickness and a smaller width, and the receiving space 531 formed by the second housing 530 may allow the first housing 640 to be inserted and coupled with the first housing 640 to fix the first housing 640. In this implementation manner, the first connection terminal 610 may be provided with the slot 511, and the second connection terminal 510 is inserted into the slot 511, so that the second housing 530 is sleeved outside the first housing 640, and the first connection terminal 610 connected with the first housing 640 is sleeved outside the second connection terminal 510 connected with the second housing 530, so that a double-layer interlocking plug-in fit is formed, and connection stability between the sampling circuit board 500 and the temperature sampling assembly can be improved, thereby improving reliability of the battery sampling device.

As shown in fig. 5, 7, 8 and 9, in one implementation, the first housing 640 has a greater thickness and width and the second housing 530 has a smaller thickness and width, and the first opening 642 of the receiving slot 641 formed by the first housing 640 may allow the second housing 530 to be inserted into and mated with the second housing 530 to secure the second housing 530. In this implementation manner, the second connection terminal 510 may be provided with the slot 511, and the first connection terminal 610 is inserted into the slot 511, so that the first housing 640 is sleeved outside the second housing 530, and the second connection terminal 510 connected with the second housing 530 is sleeved outside the first connection terminal 610 connected with the first housing 640, so that a double-layer interlocking plug-in fit is formed, and connection stability between the sampling circuit board 500 and the temperature sampling assembly can be improved, thereby improving reliability of the battery sampling device.

Optionally, as shown in fig. 7 and 8, a sealant 643 is filled between the second connection terminal 510 and the second case 530 according to some embodiments of the present application; and/or, sealant 643 is filled between the carrier circuit board 620 and the first housing 640 and between the temperature sensing element 630 and the first housing 640.

After the carrier circuit board 620 is connected with the first connection terminal 610 and the temperature sensing element 630 through the detection circuit 621 to form a loop, the carrier circuit board may be fixed in the first housing 640 in advance through a clamping manner, and then the sealant 643 is filled into the first housing 640 for curing. The sealant 643 cooperates with the first housing 640 to realize waterproof sealing of the temperature sensing element 630 and the carrier circuit board 620, and improve waterproof and protective performance of the temperature acquisition assembly 600.

The second connection terminal 510 may be connected to the sampling circuit board 500 to form a conductive loop, and then sleeved into the second housing 530, and the second connection terminal 510 may be fastened and fixed with the second housing 530. After the second connection terminal 510 is assembled to the second housing 530, the second housing 530 may be filled with the sealant 643 to protect the second connection terminal 510.

In this embodiment, by disposing the sealant 643 in the first housing 640, the protection performance of the temperature sampling assembly can be improved and the connection stability between the temperature sensing element 630 and the carrier circuit board 620 can be improved. By providing the sealant 643 in the second housing 530, the protection performance and the connection stability of the second connection terminal 510 can be improved.

According to some embodiments of the present application, optionally, a crimp 520 is provided on the sampling circuit board 500, the crimp 520 crimp-fixes the second connection terminal 510 to the sampling circuit board 500, and the second connection terminal 510 is electrically connected to the sampling circuit board 500 through the crimp 520.

The crimp 520 is a member for fixing the second connection terminal 510 by a clamping or pressing force, and the crimp 520 may be fixedly connected to the sampling circuit board 500. Specifically, the crimp 520 may include a plurality of jaws 521, and the plurality of jaws 521 may be disposed opposite to each other to fix the second connection terminal 510 by a clamping crimping action of the plurality of jaws 521. The crimp 520 may have conductivity so that the crimp 520 may be mechanically connected to the second connection terminal 510, or may be electrically connected to the circuit on the sampling circuit board 500 through the crimp 520. In some embodiments, a portion of the crimp 520, for example, an end of the jaw 521, may pierce the circumferential outer wall of the second connection terminal 510 to extend toward the inside of the second connection terminal 510, so that connection stability and conductivity of the crimp 520 and the second connection terminal 510 may be improved.

The second connection terminal 510 is fixed to the sampling circuit board 500 by the crimp member 520 in this embodiment, and the structure is simple. In the manner of directly welding the second connection terminal 510 and the sampling circuit board 500, when a cold joint occurs between the second connection terminal 510 and the sampling circuit board 500, the sampling circuit board 500 and the second connection terminal 510 are always discarded, and the second connection sheet is fixed on the sampling circuit board 500 by the press-connection member 520 in this embodiment, so that the connection failure possibility of the second connection terminal 510 and the sampling circuit board 500 due to the cold joint is reduced, the connection stability and reliability of the connection between the second connection terminal 510 and the sampling circuit board 500 are improved, and even if the connection failure occurs between the second connection terminal 510 and the sampling circuit board 500, the second connection terminal 510 and the sampling circuit board 500 do not need to be completely discarded, so that the discarding cost of the battery sampling device is reduced.

According to some embodiments of the present application, optionally, a detection circuit 621 is disposed on the carrier circuit board 620, and the temperature sensing element 630 is electrically connected to the first connection terminal 610 through the detection circuit 621.

The detection circuit 621 is a circuit provided on the carrier circuit board 620, which may be a copper wire or the like.

In this embodiment, the detection circuit 621 is disposed on the carrier circuit board 620, so that the wiring between the components is simpler, and the condition of disordered wiring is not easy to occur, which is beneficial to the assembly of each component in the temperature acquisition assembly 600.

According to some embodiments of the application, the temperature sensing element 630 is optionally soldered to and conductively connected with the detection circuit 621.

The temperature sensing element 630 and the detection circuit 621 may be connected by laser welding or the like.

The temperature sensing element 630 is welded with the detection circuit 621, so that the mechanical connection of the temperature sensing element and the detection circuit can be realized, the conduction can be realized conveniently, and the operation is convenient. It should be noted that, because the temperature sampling assembly is detachably connected with the sampling circuit board 500, when the temperature sampling assembly is processed, if the temperature sensing element 630 and the detection circuit 621, that is, the carrier circuit board 620, are in cold joint, the temperature sampling assembly can be directly discarded, and the whole battery sampling device does not need to be discarded.

Optionally, according to some embodiments of the application, the sampling circuit board 500 comprises a flexible circuit board to which the temperature acquisition assembly 600 is detachably connected; and/or, the carrier circuit board 620 includes a hard circuit board, to which the temperature sensing element 630 and the first connection terminal 610 are disposed.

The sampling circuit board 500 may be a flexible circuit board in part or may be a flexible circuit board in whole. The carrier circuit board 620 may be a hard circuit board in part or a whole.

The sampling circuit board 500 can improve the adaptability of the sampling circuit board 500 in a plurality of battery cells by using the flexible circuit board, and is beneficial to flexible arrangement of the sampling circuit board 500. The carrier circuit board 620 adopts a hard circuit board, which can play a good supporting role on the temperature sensing element 630, reduce the influence of deformation of other related components on the temperature sensing element 630, and reduce the possibility of damage to the temperature sensing element 630.

Some embodiments of the present application further provide a battery 100, including a battery cell and a battery 100 sampling assembly according to the present application or any embodiment of the present application, where the temperature acquisition assembly 600 of the battery sampling device is configured to acquire a temperature of the battery cell.

Some embodiments of the present application also provide an electric device, including the battery 100 according to the present application or any of the embodiments of the present application, and the battery 100 is used to provide electric energy to the electric device and the battery 100 is used to provide electric energy.

The powered device may be any of the devices or systems described above that employ battery 100.

According to some embodiments of the present application, as shown in fig. 4 to 9, the present embodiment provides a battery sampling device including a sampling circuit board 500 and a temperature acquisition assembly 600. The temperature acquisition assembly 600 is electrically connected with the sampling circuit board 500, and the temperature acquisition assembly 600 is detachably connected to the sampling circuit board 500. The temperature acquisition assembly 600 comprises a first shell 640, a carrier circuit board 620 and a temperature sensing element 630, wherein the temperature sensing element 630 is arranged on the carrier circuit board 620, a first connecting terminal 610 is arranged on the carrier circuit board 620, and the first connecting terminal 610 is in conductive connection with the temperature sensing element 630; the first case 640 defines a receiving groove 641 therein, one end of the receiving groove 641 has a first opening 642, the carrier circuit board 620, the temperature sensing element 630, and the first connection terminal 610 are disposed in the receiving groove 641, and the first connection terminal 610 is disposed toward the first opening 642. The battery sampling device further comprises a second shell 530, an accommodating space 531 is arranged on the second shell 530, a second connecting terminal 510 is arranged in the accommodating space 531, the sampling circuit board 500 is provided with the second connecting terminal 510, the second connecting terminal 510 is arranged in the accommodating space 531, one end of the second connecting terminal 510 is electrically connected with the sampling circuit board 500 in a conductive mode, and the other end of the second connecting terminal 510 is spliced with the first connecting terminal 610 in a conductive mode. The second connection terminal 510 is provided with a slot 511, the first connection terminal 610 is inserted into the slot 511, and the second housing 530 is inserted into the accommodating groove 641. A sealant 643 is filled between the second connection terminal 510 and the second case 530. The sampling circuit board 500 is provided with a crimp 520, the crimp 520 crimp-fixes the second connection terminal 510 to the sampling circuit board 500, and the second connection terminal 510 is electrically connected to the sampling circuit board 500 through the crimp 520. The carrier circuit board 620 is provided with a detection circuit 621, and the temperature sensing element 630 is electrically connected to the first connection terminal 610 through the detection circuit 621. The temperature sensing element 630 is welded with the detection circuit 621 and is connected in a conductive manner, and the sampling circuit board 500 is a flexible circuit board; the carrier circuit board 620 is a rigid circuit board.

The foregoing description of various embodiments is intended to highlight differences between the various embodiments, which may be the same or similar to each other by reference, and is not repeated herein for the sake of brevity.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (13)

1. A battery sampling device, comprising:

a sampling circuit board;

the temperature acquisition assembly is electrically connected with the sampling circuit board and is detachably connected with the sampling circuit board;

The temperature acquisition assembly is provided with a first connecting terminal, the sampling circuit board is provided with a second connecting terminal, and the second connecting terminal is spliced with the first connecting terminal and is connected in a conductive mode.

2. The battery sampling device of claim 1, wherein the temperature acquisition assembly comprises a carrier circuit board and a temperature sensing element, the temperature sensing element is disposed on the carrier circuit board, and the first connection terminal is disposed on the carrier circuit board and is electrically connected with the temperature sensing element.

3. The battery sampling device of claim 2, wherein the temperature acquisition assembly further comprises a first housing defining a receiving slot therein, one end of the receiving slot having a first opening, the carrier circuit board and the temperature sensing element being disposed within the receiving slot, and the first connection terminal extending toward the end at which the first opening is located.

4. The battery sampling device of claim 3, further comprising a second housing, wherein an accommodating space is provided on the second housing, the second connection terminal is disposed in the accommodating space, one end of the second connection terminal is electrically connected with the sampling circuit board, and the other end of the second connection terminal is plugged with the first connection terminal.

5. The battery sampling device of claim 4, wherein the first housing is plug-in connected to the second housing.

6. The battery sampling device of claim 5, wherein the first housing is inserted into the receiving space, the first connection terminal is provided with a slot, and the second connection terminal is inserted into the slot;

Or, the second connecting terminal is provided with a slot, the first connecting terminal is inserted into the slot, and the second shell is inserted into the accommodating groove.

7. The battery sampling device of claim 5, wherein a sealant is filled between the second connection terminal and the second housing;

And/or sealant is filled between the carrier circuit board and the first shell and between the temperature sensing element and the first shell.

8. The battery sampling device according to any one of claims 1 to 7, wherein a crimp member is provided on the sampling circuit board, the crimp member crimp-fixes the second connection terminal to the sampling circuit board, and the second connection terminal is electrically connected to the sampling circuit board through the crimp member.

9. The battery sampling device of any one of claims 2 to 7, wherein a detection circuit is provided on the carrier circuit board, and the temperature sensing element is electrically connected to the first connection terminal through the detection circuit.

10. The battery sampling device of claim 9, wherein the temperature sensing element is welded to and conductively coupled to the detection circuit.

11. The battery sampling device of any one of claims 2-7, wherein the sampling circuit board comprises a flexible circuit board to which the temperature acquisition assembly is detachably connected;

And/or the carrier circuit board comprises a hard circuit board, and the temperature sensing element and the first connecting terminal are arranged on the hard circuit board.

12. A battery, comprising:

A battery cell;

the battery sampling apparatus of any one of claims 1 to 11, wherein the temperature acquisition component of the battery sampling apparatus is configured to acquire the temperature of the battery cell.

13. An electrical device comprising the battery of claim 12 for providing electrical energy.