Temperature acquisition assembly, battery pack and electric equipment

Abstract

The utility model discloses a temperature acquisition assembly, a battery pack and electric equipment, and belongs to the technical field of batteries. The temperature acquisition assembly comprises a shell and a temperature measuring piece, the temperature measuring piece is arranged in the shell, and the shell is installed on the electric connecting piece at the battery temperature acquisition point, so that the temperature measuring piece in the shell senses the temperature of the electric connecting piece through the shell. Therefore, when the battery temperature measuring device is used, the temperature measuring device can be installed only by directly installing the shell on an electric connecting piece at a battery temperature collecting point, the operation is simple and convenient, the original component connecting structure at the temperature collecting point cannot be influenced, and in addition, the shell can also play a role in isolating and protecting the electric connecting piece.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a temperature acquisition component, a battery pack, and an electrical device. Background Art

[0002] In a battery management system, it is generally necessary to collect electrical parameters of a battery. To achieve temperature acquisition, a temperature sensor is usually installed at an acquisition point, and a circuit connected to the temperature sensor converts the temperature collected by the temperature sensor into an electrical signal and transmits it to the battery management system.

[0003] In related technologies, when using a temperature sensor for temperature acquisition, it is usually necessary to specially customize installation bolts or OT terminals to integrate the temperature sensor into the bolts or OT terminals, so as to meet the installation requirements. However, adopting such an integrated structure not only complicates the operation but also affects the connection of components at the temperature acquisition point. Summary of the Utility Model

[0004] This application aims to provide a temperature acquisition component, a battery pack, and an electrical device, which can solve the problems in related technologies that when using the structure of integrating a temperature sensor into a bolt or an OT terminal for temperature acquisition, the operation is not only complicated but also affects the connection of components at the temperature acquisition point.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of this application provides a temperature acquisition structure, including: a housing and a temperature measuring member. The housing is adapted to be installed on an electrical connector at a battery temperature acquisition point, and the temperature measuring member is disposed inside the housing. The temperature measuring member is used to sense the temperature of the electrical connector through the housing.

[0007] Optionally, the housing includes a mutually connected installation part and a first connection part. The temperature measuring member is embedded in the installation part, and the first connection part is used to be installed on the electrical connector.

[0008] Optionally, the housing further includes a second connection part. The second connection part is connected to the first connection part. The first connection part is used to connect one end of the electrical connector, and the second connection part is used to connect the other end of the electrical connector.

[0009] Optionally, a first installation groove is provided in the first connection part for installing one end of the electrical connector; and / or, a second installation groove is provided in the second connection part for installing the other end of the electrical connector.

[0010] Optionally, a receiving space is formed between the first connection part and the second connection part. The receiving space is used to receive components connected to the electrical connector.

[0011] Optionally, the first connecting portion is provided as a plurality of, and the plurality of first connecting portions are arranged side by side, and each first connecting portion is used for connecting one of the electrical connectors; and / or, the second connecting portion is provided as a plurality of, and the plurality of second connecting portions are arranged side by side, and each second connecting portion is used for connecting one of the electrical connectors.

[0012] Optionally, the temperature acquisition component further includes a wire, the installation portion is provided with an installation hole, one end of the wire passes through the installation hole and is electrically connected to the temperature measuring element, and the other end is adapted to be electrically connected to the battery management module.

[0013] Optionally, the housing is a heat-conducting insulating member.

[0014] Optionally, the heat conduction coefficient of the housing is greater than or equal to 0.3 W / m·K.

[0015] Optionally, the breakdown voltage of the housing is greater than or equal to 1000 V.

[0016] Optionally, the temperature measuring element includes at least one of a positive temperature coefficient thermistor sensor, a negative temperature coefficient thermistor sensor, and a critical temperature coefficient thermistor sensor.

[0017] In a second aspect, an embodiment of the present application provides a battery pack, including: a battery pack body and the temperature acquisition component as described in any one of the above, a temperature acquisition point is provided in the battery pack body, an electrical connector is provided at the temperature acquisition point, and the housing is connected to the electrical connector.

[0018] Optionally, the battery pack further includes a battery management module, and the battery management module is electrically connected to the temperature measuring element for obtaining the temperature change at the temperature acquisition point through the temperature measuring element.

[0019] In a third aspect, an embodiment of the present application provides an electrical device, including the battery pack as described in any one of the above.

[0020] In the embodiment of the present application, the temperature acquisition component includes a housing and a temperature measuring element. The temperature measuring element is arranged in the housing, and the housing is installed on the electrical connector at the battery temperature acquisition point, so that the temperature measuring element in the housing senses the temperature of the electrical connector through the housing. In this way, during use, only by directly installing the housing on the electrical connector at the battery temperature acquisition point, the installation of the temperature measuring element can be realized. The operation is simple and convenient, and it will not affect the original component connection structure at the temperature acquisition point. In addition, the housing can also play an isolation and protection role for the electrical connector.

[0021] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of a temperature acquisition component according to an embodiment of the present application;

[0024] Figure 2 is a sectional view taken along line A-A in Figure 1 ;

[0025] Figure 3 is a schematic diagram of another temperature acquisition component according to an embodiment of the present application;

[0026] Figure 4 is a sectional view taken along line B-B in Figure 3 ;

[0027] Figure 5 is a schematic diagram of the installation of the temperature acquisition component from a perspective according to an embodiment of the present application;

[0028] Figure 6 is a schematic diagram of the installation of the temperature acquisition component from another perspective according to an embodiment of the present application;

[0029] Figure 7 is a schematic diagram of the installation of another temperature acquisition component according to an embodiment of the present application;

[0030] Figure 8 is an enlarged view of part C circled in Figure 7 according to an embodiment of the present application;

[0031] Figure 9 is a schematic diagram of an electrical connector and components according to an embodiment of the present application.

[0032] Reference numerals:

[0033] 1: Electrical connector; 2: Components; 3: Temperature acquisition component; 31: Housing; 311: Mounting part; 3111: Mounting hole; 312: First connection part; 3121: First mounting groove; 313: Second connection part; 3131: Second mounting groove; 314: Accommodating space; 32: Temperature measuring element; 33: Conducting wire; 4: Battery management module. Detailed implementation manners

[0034] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0035] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the 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. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present 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 thus should not be construed as limiting the present application.

[0037] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0038] Before introducing the temperature acquisition component provided by the embodiments of the present application in detail, the specific application scenarios of the temperature acquisition component will be described specifically:

[0039] As Figure 9As shown in the figure, the tabs of the battery modules in the battery pack are connected to the busbar by bolts, so that a series connection is formed between two adjacent battery modules. Therefore, it is necessary to detect the temperature of the busbar to ensure the stability of the corresponding output voltage and current. Usually, a temperature sensor is arranged at the bolt connection between the busbar and the tab of the battery module to collect the temperature. In the related art, one method is to integrate a temperature sensor in the bolt, and the temperature on the busbar is collected by a customized bolt integrated with the temperature sensor; the other method is to clamp an OT terminal integrated with the temperature sensor between the busbar and the bolt, and the temperature on the busbar is collected by the OT terminal integrated with the temperature sensor.

[0040] In the distribution box of the battery pack, electronic components such as relays and fuses that are prone to heat generation are usually integrated. To prevent overheating of such electronic components from causing safety problems, a temperature sensor is usually installed at the bolt connection part of such electronic components for temperature monitoring. In the related art, the temperature is usually collected by using the aforementioned bolt integrated with the temperature sensor or the OT terminal integrated with the temperature sensor.

[0041] When using the method of integrating a temperature sensor in the bolt, due to the different distances at the bolt connection parts, bolts of different lengths need to be customized accordingly, which increases the production cost; when using the method of integrating a temperature sensor in the OT terminal, since the OT terminal is clamped on the busbar by the bolt, the number of components between the bolts increases, which will exacerbate the phenomenon of bolt untwisting to a certain extent and reduce the quality of the bolt connection. To solve this problem, the present application proposes a temperature acquisition component.

[0042] The following will combine the accompanying drawings to describe in detail the temperature acquisition component provided by the embodiments of the present application through specific embodiments and their application scenarios.

[0043] Referring to Figures 1-4 , according to some embodiments of the present application, the temperature acquisition component 3 includes a housing 31 and a temperature measuring element 32. The housing 31 is adapted to be installed on the electrical connector 1 at the battery temperature acquisition point, and the temperature measuring element 32 is arranged in the housing 31. The temperature measuring element 32 is used to sense the temperature of the electrical connector 1 through the housing 31.

[0044] In the embodiments of the present application, the temperature acquisition component 3 includes a housing 31 and a temperature measuring element 32. The temperature measuring element 32 is arranged in the housing 31. The housing 31 is installed on the electrical connector 1 at the battery temperature acquisition point, so that the temperature measuring element 32 in the housing 31 senses the temperature of the electrical connector 1 through the housing 31. In this way, when in use, the housing only needs to be directly installed on the electrical connector 1 at the battery temperature acquisition point to complete the installation of the temperature measuring element. The operation is simple and convenient, and it will not affect the original component connection structure at the temperature acquisition point. In addition, the housing 31 can also play an isolation and protection role for the electrical connector 1.

[0045] In a specific application, the battery temperature acquisition point is the position in the battery pack that needs to be monitored for temperature. The temperature of this position is monitored to avoid excessive temperature affecting the normal use of the battery pack. Taking the power battery pack as an example, the battery modules inside are interconnected through busbars, and different busbars are electrically connected to each other by means of bolt tightening. During the high-current charging and discharging process of the battery module, due to factors such as the contact resistance between the tab and the busbar and the busbar resistance, the battery module will experience a significant temperature rise. Therefore, in battery management, it is necessary to collect the temperature at the connection between the tab and the busbar to avoid excessive temperature at the busbar, resulting in excessive temperature rise of the battery module and thermal runaway. Of course, the temperature acquisition component 3 can also be set at other battery temperature acquisition points, such as heat-prone electronic components in the distribution box, etc. Those skilled in the art can set it according to actual needs, and the embodiments of the present application do not limit this.

[0046] In some embodiments of the present application, the housing 31 is a thermally conductive insulating member.

[0047] In a specific application, the housing 31 of the temperature acquisition component 3 can be formed by mixing a thermally conductive material and an insulating material in proportion and then using a die-casting molding method. Among them, the content ratio of the thermally conductive material is 10% - 20%, and the content of the insulating material is 80% - 90%. In the specific processing process, the temperature measuring element 32 is set at a preset position in the mold, and then the raw material of the housing 31 mixed in proportion is injected into the mold, thereby manufacturing the temperature acquisition component 3.

[0048] It can be understood that the thermally conductive materials include but are not limited to: alumina, aluminum nitride, silicon carbide, etc., and the insulating materials include but are not limited to: silicone rubber, silicone resin, silicone ketone, etc. Those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0049] Of course, the raw material of the housing 31 can also directly use a high thermally conductive insulating material, such as: including but not limited to: high thermally conductive epoxy resin, high thermally conductive silicone rubber, high thermally conductive silicone grease, etc. Those skilled in the art can select according to actual needs, and the embodiments of the present application do not limit this.

[0050] In some embodiments of the present application, the minimum thickness of the housing 31 is 0.3 - 8 mm. Thus, while ensuring the thermal conductivity, the usage amount of the raw material of the housing 31 is reduced to reduce the production cost.

[0051] In some embodiments of the present application, the Shore hardness of the housing 31 is 10 - 20. Thus, while ensuring the thermal conductivity, it plays a certain degree of protective role for the electrical connector 1.

[0052] Optionally, refer to Figures 1-4, the housing 31 includes a connected mounting portion 311 and a first connecting portion 312. The temperature measuring element 32 is embedded in the mounting portion 311, and the first connecting portion 312 is used for mounting on the electrical connector 1.

[0053] In the embodiment of the present application, the housing 31 includes a connected mounting portion 311 and a first connecting portion 312. The temperature measuring element 32 is embedded in the mounting portion 311, so that the temperature measuring element 32 collects the temperature change on the electrical connector 1 through the connected mounting portion 311 and the first connecting portion 312. And mounting the first connecting portion 312 on the electrical connector 1 can play a role in fixing and protecting the electrical connector 1 to a certain extent.

[0054] In a specific application, the temperature measuring element 32 is injection-molded into the mounting portion 311 of the housing by an injection molding method to obtain an integrally formed temperature acquisition assembly 3, which improves the structural strength of the temperature acquisition assembly 3. At the same time, the integrally formed method is more conducive to the temperature on the electrical connector 1 being transmitted to the temperature measuring element 32 through the housing 31, improving the accuracy of temperature measurement.

[0055] It can be understood that when the temperature measuring element 32 is embedded in the mounting portion 311, it can be completely embedded in the mounting portion 311 or partially embedded in the mounting portion 311. For example, the part of the temperature measuring element 32 with a lead can be exposed outside the mounting portion 311 to facilitate the connection of the temperature measuring element 32 to an external wire harness.

[0056] Optionally, referring to Figure 2 and Figure 6 , the housing 31 further includes a second connecting portion 313. The second connecting portion 313 is connected to the first connecting portion 312. The first connecting portion 312 is used for connecting one end of the electrical connector 1, and the second connecting portion 313 is used for connecting the other end of the electrical connector 1.

[0057] In the embodiment of the present application, the housing 31 further includes a second connecting portion 313. The first connecting portion 312 is connected to one end of the electrical connector 1, and the second connecting portion 313 is connected to the other end of the electrical connector 1. In this way, the two ends of the electrical connector 1 are respectively connected by the first connecting portion 312 and the second connecting portion 313 of the housing 31, which improves the connection firmness between the housing and the electrical connector 1, and can also more accurately measure the temperature change of the electrical connector 1.

[0058] In a specific application, referring to Figure 6 and Figure 9, taking the example of connecting busbars between battery modules with bolts, the electrical connector 1 can be a bolt-nut structure, and the tabs of adjacent two battery modules and the busbar are electrically connected to each other by means of locking with bolts and nuts. Furthermore, the first connecting portion 312 can be sleeved on one end where the bolt and the nut are engaged, and the second connecting portion 313 can be sleeved on the bolt head. In this way, the temperature on the bolt and the nut is transmitted through the first connecting portion 312 and the second connecting portion 313 respectively, and the first connecting portion 312 and the second connecting portion 313 are connected to each other, so that the temperature on the bolt and the nut is more accurately transmitted to the temperature measuring element 32.

[0059] Optionally, referring to Figure 2 and Figure 6 , the first connecting portion 312 is provided with a first installation groove 3121 for installing one end of the electrical connector 1; and / or, the second connecting portion 313 is provided with a second installation groove 3131 for installing the other end of the electrical connector 1.

[0060] In the embodiment of the present application, the first installation groove 3121 is provided in the first connecting portion 312, so that the first installation groove 3121 can be sleeved on the end of the electrical connector 1, and the connection between the first connecting portion 312 and the electrical connector 1 can be realized, which facilitates the connection operation between the housing and the electrical connector 1, and at the same time protects the electrical connector 1 to a certain extent.

[0061] Or, the second installation groove 3131 is provided in the second connecting portion 313, so that the second installation groove 3131 can be sleeved on the other end of the electrical connector 1, and the connection between the second connecting portion 313 and the electrical connector 1 can be realized, which facilitates the connection operation between the housing and the electrical connector 1, and at the same time protects the electrical connector 1 to a certain extent.

[0062] In some embodiments of the present application, the first installation groove 3121 is provided in the first connecting portion 312, and the second installation groove 3131 is provided in the second connecting portion 313, so that the first installation groove 3121 and the second installation groove 3131 can be sleeved on the two ends of the electrical connector 1 respectively, and the connection between the first connecting portion 312, the second connecting portion 313 and the electrical connector 1 can be realized, which facilitates the connection operation between the housing and the electrical connector 1, and at the same time protects the electrical connector 1 to a certain extent.

[0063] It should be noted that the structures of the first installation groove 3121 and the second installation groove 3131 are adapted to the two ends of the electrical connector 1, so that the first installation groove 3121 and the second installation groove 3131 are connected to the two ends of the electrical connector respectively by means of interference fit or the like, so as to ensure the stability of the connection, increase the contact area at the same time, and then improve the heat conduction efficiency.

[0064] Optionally, referring to Figure 2 、Figure 6 and Figure 9 A receiving space 314 is formed between the first connecting portion 312 and the second connecting portion 313, and the receiving space 314 is used to receive the component 2 connected to the electrical connector 1.

[0065] In the embodiment of the present application, a receiving space 314 is formed between the first connecting portion 312 and the second connecting portion 313, and the component 2 is accommodated in the receiving space 314, so that the connection structure between the housing and the components at the battery temperature acquisition point is more fitting, and the temperature changes on the electrical connector 1 and the component 2 can be obtained more comprehensively.

[0066] In a specific application, referring to Figure 9 , taking the example of connecting busbars between battery modules with bolts, the electrical connector 1 is a bolt and nut, the component 2 is a busbar and a battery module tab, and the tabs of two adjacent battery modules are electrically connected to each other through the busbar by means of tightening with bolts and nuts. The first mounting groove 3121 of the first connecting portion 312 is sleeved on the nut, and the screw rod and the nut exposed outside the nut are located in the first mounting groove 3121. The second connecting portion 313 is sleeved on the bolt head, and the component 2 connected to the bolt and the nut is exactly located in the receiving space 314 formed between the first connecting portion 312 and the second connecting portion 313. Thus, the temperature on the bolt, nut and busbar is transmitted to the temperature measuring member 32 through the first connecting portion 312, the second connecting portion 313 and the receiving space 314, increasing the heat conduction area and obtaining the temperature changes on the electrical connector 1 and the component 2 more comprehensively.

[0067] Optionally, the first connecting portion 312 is provided in a plurality, and the plurality of first connecting portions 312 are arranged side by side, and each first connecting portion 312 is used to connect an electrical connector 1; and / or, the second connecting portion 313 is provided in a plurality, and the plurality of second connecting portions 313 are arranged side by side, and each second connecting portion 313 is used to connect an electrical connector 1.

[0068] In the embodiment of the present application, a plurality of first connecting portions 312 can be arranged side by side to facilitate adaptation to a plurality of electrical connectors 1, so as to adapt to different connection structures.

[0069] Or, a plurality of second connecting portions 313 can be arranged side by side to facilitate adaptation to a plurality of electrical connectors 1, so as to adapt to different connection structures.

[0070] In some embodiments of the present application, a plurality of first connecting portions 312 can be arranged side by side, and a plurality of second connecting portions 313 can be arranged side by side to facilitate adaptation to a plurality of electrical connectors 1, so as to adapt to different connection structures.

[0071] It should be noted that the number of the first connecting portion 312 and the second connecting portion 313 in the housing can be set to be the same, and the positions of the first connecting portion 312 and the second connecting portion 313 can be set in one-to-one correspondence. Of course, the number of the first connecting portion 312 and the second connecting portion 313 can also be set to be different, which can be determined according to the structure of the electrical connection member at the actual battery temperature acquisition point, and the embodiments of the present application do not limit this.

[0072] Optionally, referring to Figure 1 and Figure 6 , the temperature acquisition component 3 further includes a wire 33. The installation portion 311 is provided with an installation hole 3111. One end of the wire 33 passes through the installation hole 3111 and is electrically connected to the temperature measuring member 32, and the other end is adapted to be electrically connected to the battery management module 4.

[0073] In the embodiment of the present application, the installation portion 311 of the temperature acquisition component 3 is provided with the installation hole 3111, so that one end of the wire 33 passes through the installation hole 3111 and is electrically connected to the temperature measuring member 32, and the other end of the wire 33 is electrically connected to the battery management module 4. In this way, the battery management module 4 can obtain the temperature information collected by the temperature acquisition component 3 through the wire 33, and realize the temperature monitoring of the electrical connection member 1.

[0074] In a specific application, referring to Figure 6 , in the battery, the battery management module 4 (Battery Management System, BMS) and the temperature acquisition component 3 are connected by a wire harness, so that the battery management module obtains the temperature information at the electrical connection member 1 collected by the temperature acquisition component 3, and performs corresponding monitoring on the temperature at the electrical connection member 1 to prevent the temperature at the electrical connection member 1 from being too high, thereby causing thermal runaway.

[0075] It can be understood that the installation hole 3111 is opened at the position where the temperature measuring member 32 is embedded in the installation portion 311. The installation hole 3111 corresponds to the lead position of the temperature measuring member 32, so that after the lead of the temperature measuring member 32 is connected to the wire 33, the wire 33 can pass through the installation hole 3111 and be connected to the external battery management module 4.

[0076] Optionally, the thermal conductivity of the housing 31 is greater than or equal to 0.3 W / m·k.

[0077] Specifically, the thermal conductivity of the housing 31 can be set to any value such as 0.3 W / m·k, 0.6 W / m·k, 0.9 W / m·k, 1.2 W / m·k, 1.5 W / m·k, 1.8 W / m·k, 2.1 W / m·k, 2.4 W / m·k, 2.7 W / m·k, 3.0 W / m·k, 3.3 W / m·k, 3.6 W / m·k, 3.9 W / m·k or the range between any two values.

[0078] In an embodiment of the present application, the thermal conductivity of the housing 31 is greater than or equal to 0.3 W / m·K, so as to ensure that the housing 31 can transfer the temperature on the electrical connector 1 to the temperature measuring component 32 more efficiently.

[0079] In a specific application, the thermal conductivity refers to the amount of heat transferred through an area of 1 square meter in 1 second under steady heat transfer conditions, with a temperature difference of 1 degree (K, °C) between the two surfaces of a material that is 1 meter thick, and the unit is watt per meter degree (W / (m·K)). The housing 31 transfers the temperature on the electrical connector 1 that is closely connected to it to the temperature measuring component 32, so as to detect the temperature change on the electrical connector 1. To ensure the efficiency of temperature transfer, the thermal conductivity of the housing 31 is greater than or equal to 0.3 W / m·K to ensure the thermal conductivity efficiency of the housing 31.

[0080] Preferably, the thermal conductivity of the housing 31 is 0.3 - 3.0 W / m·K. While ensuring the thermal conductivity efficiency of the housing 31, it avoids too large a thermal conductivity, which makes the range of selectable raw materials for the housing 31 small and the price too high, being unfavorable for production and manufacturing.

[0081] Optionally, the breakdown voltage of the housing 31 is greater than or equal to 1000V.

[0082] Specifically, the breakdown voltage of the housing 31 can be set to any value such as 1000V, 1100V, 1200V, 1300V, 1400V, 1500V, 1600V, 1700V, 1800V, 1900V, 2000V, 2100V, 2200V, etc. or the range between any two values.

[0083] In an embodiment of the present application, the breakdown voltage of the housing 31 is greater than or equal to 1000V, that is, the housing 31 has a certain insulation property, thereby providing insulation protection for the electrical connector 1.

[0084] In a specific application, in accordance with the national standard GB / T 1408.1-2006 "Test Method for Electrical Strength of Insulating Materials", an insulation electrical strength test is carried out on the housing 31. A DC voltage of at least 1000V is applied across the two ends of the housing 31, and the housing 31 is broken down; or, an AC voltage of at least 3000V is applied across the two ends of the housing 31 and maintained for 60s, and the leakage current of the housing 31 is less than 3mA.

[0085] Optionally, the temperature measuring component 32 includes at least one of a positive temperature coefficient thermistor sensor, a negative temperature coefficient thermistor sensor, and a critical temperature coefficient thermistor sensor.

[0086] In an embodiment of the present application, the temperature measuring element 32 can be any one of a positive temperature coefficient thermistor sensor, a negative temperature coefficient thermistor sensor, and a critical temperature coefficient thermistor sensor, so that the specific type of the temperature measuring element 32 can be selected more conveniently.

[0087] In a specific application, the temperature measuring element 32 is generally a temperature sensor using a thermistor, and the semiconductor material provided therein changes with temperature, and its resistance value also changes.

[0088] In some embodiments of the present application, the temperature measuring element 32 is a positive temperature coefficient thermistor sensor (Positive Temperature Coefficient, PTC), and its resistance increases with the increase of temperature, thereby blocking the circuit with the battery management module 4 to perform corresponding temperature monitoring.

[0089] In some embodiments of the present application, the temperature measuring element 32 is a negative temperature coefficient thermistor sensor (Negative Temperature Coefficient, NTC), and its resistance decreases with the increase of temperature, thereby changing the current of the circuit connected to the battery management module 4 to perform corresponding temperature monitoring.

[0090] In some embodiments of the present application, the temperature measuring element 32 is a critical temperature coefficient thermistor sensor (Critical Temperature Resistor, CTR). When the temperature reaches the critical point, its resistance value decreases rapidly with the increase of temperature, thereby changing the current of the circuit connected to the battery management module 4 to perform corresponding temperature monitoring.

[0091] Optionally, referring to Figure 5 and Figure 6 , an embodiment of the present application further provides a battery pack, which includes: a battery pack body and the temperature acquisition component 3 of any one of the above embodiments. A temperature acquisition point is provided in the battery pack body, an electrical connection member 1 is provided at the temperature acquisition point, and the housing 31 is connected to the electrical connection member 1.

[0092] In the battery pack according to the embodiment of the present application, temperature acquisition points are arranged in the battery pack body, and an electrical connection member 1 is arranged at the temperature acquisition points. A temperature acquisition component 3 connected to the electrical connection member 1 can collect the temperature at this location in real time, thereby forming a monitoring of the temperature inside the battery pack. Among them, the temperature acquisition component 3 includes a housing 31 and a temperature measuring member 32. The temperature measuring member 32 is arranged inside the housing 31. The housing 31 is installed on the electrical connection member 1 at the battery temperature acquisition point, so that the temperature measuring member 32 inside the housing 31 senses the temperature of the electrical connection member 1 through the housing 31. In this way, when in use, only by directly installing the housing on the electrical connection member 1 at the battery temperature acquisition point, the installation of the temperature measuring member can be realized. The operation is simple and convenient, and it will not affect the original component connection structure at the temperature acquisition point. In addition, the housing can also play an isolation and protection role for the electrical connection member.

[0093] Optionally, referring to Figure 5 and Figure 6 , the battery pack further includes a battery management module 4. The battery management module 4 is electrically connected to the temperature measuring member 32 and is used to obtain the temperature change at the temperature acquisition point through the temperature measuring member 32.

[0094] In the battery pack according to the embodiment of the present application, a battery management module 4 is arranged in the battery pack. The battery management module 4 is electrically connected to the temperature measuring member 32, so as to obtain the temperature change at the temperature acquisition point through the temperature measuring member 32, and then perform corresponding monitoring on the temperature inside the battery pack.

[0095] In a specific application, the battery management module 4 is mainly for intelligently managing and maintaining each battery unit, monitoring the state of the battery, preventing the battery from overcharging and over-discharging, so as to extend the service life of the battery. Among them, during the charging and discharging process of the battery, the temperature of each battery in the battery pack is collected in real time through the temperature measuring member 32 to prevent the battery from overcharging or over-discharging; at the same time, the charging and discharging power can be reduced and the electrical connection failure can be avoided.

[0096] Optionally, the embodiment of the present application further provides an electrical device. The electrical device includes the battery pack in any one of the above embodiments. The temperature acquisition component 3 includes a housing 31 and a temperature measuring member 32. The temperature measuring member 32 is arranged inside the housing 31. The housing 31 is installed on the electrical connection member 1 at the battery temperature acquisition point, so that the temperature measuring member 32 inside the housing 31 senses the temperature of the electrical connection member 1 through the housing 31. In this way, when in use, only by directly installing the housing on the electrical connection member 1 at the battery temperature acquisition point, the installation of the temperature measuring member can be realized. The operation is simple and convenient, and it will not affect the original component connection structure at the temperature acquisition point. In addition, the housing can also play an isolation and protection role for the electrical connection member.

[0097] In some embodiments, the electrical device includes, but is not limited to: vehicles, aircraft, construction machinery, and computers. The battery pack provides electrical energy for the operation of the electrical device.

[0098] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A temperature collection component (3), characterized in that: include: A shell (31) and a temperature measuring component (32), wherein the shell (31) is suitable for being installed on an electrical connector (1) at a battery temperature collection point, and the temperature measuring component (32) is arranged in the shell (31), and the temperature measuring component (32) is used to sense the temperature of the electrical connector (1) through the shell (31).

2. The temperature acquisition component (3) according to claim 1, characterized in that: The housing (31) comprises a mounting portion (311) and a first connecting portion (312) which are connected to each other, the temperature measuring component (32) is embedded in the mounting portion (311), and the first connecting portion (312) is used for being mounted on the electrical connecting component (1).

3. The temperature acquisition component (3) according to claim 2, characterized in that: The shell (31) further comprises a second connecting portion (313), wherein the second connecting portion (313) is connected to the first connecting portion (312), wherein the first connecting portion (312) is used to connect one end of the electrical connector (1), and the second connecting portion (313) is used to connect the other end of the electrical connector (1).

4. The temperature acquisition component (3) according to claim 3, characterized in that: The first connecting portion (312) is provided with a first mounting groove (3121) for mounting one end of the electrical connecting member (1); and / or the second connecting portion (313) is provided with a second mounting groove (3131) for mounting the other end of the electrical connecting member (1).

5. The temperature acquisition component (3) according to claim 4, characterized in that: An accommodating space (314) is formed between the first connecting portion (312) and the second connecting portion (313), and the accommodating space (314) is used to accommodate a component (2) connected to the electrical connector (1).

6. The temperature acquisition component (3) according to any one of claims 3 to 5, characterized in that: The first connection part (312) is provided in plurality, the plurality of first connection parts (312) are arranged side by side, and each first connection part (312) is used to connect one of the electrical connectors (1); and / or the second connection part (313) is provided in plurality, the plurality of second connection parts (313) are arranged side by side, and each second connection part (313) is used to connect one of the electrical connectors (1).

7. The temperature acquisition component (3) according to claim 2, characterized in that: The temperature acquisition component (3) further comprises a wire (33); the mounting portion (311) is provided with a mounting hole (3111); one end of the wire (33) passes through the mounting hole (3111) to be electrically connected to the temperature measuring element (32); and the other end is suitable for being electrically connected to the battery management module (4).

8. The temperature acquisition component (3) according to claim 1, characterized in that: The housing (31) is a heat-conducting insulating member.

9. The temperature acquisition component (3) according to claim 1, characterized in that: The thermal conductivity of the shell (31) is greater than or equal to 0.3 W / mk.

10. The temperature acquisition component (3) according to claim 1, characterized in that: The breakdown voltage of the housing (31) is greater than or equal to 1000V.

11. The temperature acquisition component (3) according to claim 1, characterized in that: The temperature measuring element (32) comprises: at least one of a positive temperature coefficient thermistor sensor, a negative temperature coefficient thermistor sensor, and a critical temperature coefficient thermistor sensor.

12. A battery pack, characterized in that: include: A battery pack body and a temperature collection component (3) as described in any one of claims 1 to 11, wherein a temperature collection point is provided in the battery pack body, an electrical connector (1) is provided at the temperature collection point, and the shell (31) is connected to the electrical connector (1).

13. A battery pack according to claim 12, characterized in that: The battery pack further comprises a battery management module (4), wherein the battery management module (4) is electrically connected to the temperature measuring component (32) and is used for acquiring temperature changes at a temperature collection point through the temperature measuring component (32).

14. An electrical device, characterized in that: Comprising a battery pack as claimed in any one of claims 12-13.

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