Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device, and relates to the technical field of batteries. The battery device comprises a battery, a box body and a first temperature detection piece. The box body is provided with the accommodating cavity, and the battery is arranged in the accommodating cavity to protect the battery, so that the safety of the battery device is improved. The box body is provided with an exhaust channel which is communicated with the accommodating cavity so as to exhaust gas in the accommodating cavity and release the pressure in the box body, so that the internal pressure and the external pressure of the box body are kept balanced, the deformation of the box body and the battery is avoided, the structural stability of the battery device is improved, and the probability of thermal runaway caused by the deformation of the battery is reduced; and the safety of the battery device is enhanced. The first temperature detection piece is located in the containing cavity and close to the exhaust channel, and the first temperature detection piece is used for detecting the temperature of substances flowing through the exhaust channel. A user can take corresponding measures in time according to the temperature detected by the first temperature detection piece, so that the battery device is ensured to be used more reasonably and safely.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] With the continuous development of battery technology, battery capacity is increasing, and batteries are being applied in various fields. As battery capacity increases, research on battery safety is becoming increasingly important.

[0003] In related technologies, the battery pack is equipped with an exhaust channel to expel gases from the battery, thereby delaying thermal runaway. However, the chain reaction triggered by thermal runaway is extremely violent and difficult to control.

[0004] Therefore, there is an urgent need for a battery device that can improve safety. Utility Model Content

[0005] This application provides a battery device and an electrical device that can improve the safety of the battery device and the electrical device.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a battery device, comprising:

[0008] Battery;

[0009] The housing has a receiving cavity and an exhaust channel, and the battery is disposed in the receiving cavity; the exhaust channel is connected to the receiving cavity;

[0010] A first temperature sensor is located in the accommodating cavity and is disposed near the exhaust channel; the first temperature sensor is used to detect the temperature of the substance flowing through the exhaust channel.

[0011] In some embodiments, the exhaust passage has an inlet facing the receiving cavity; a first temperature sensing element is disposed at the inlet.

[0012] In some embodiments, the housing has a first sidewall with a communicating structure, the communicating structure having a communicating cavity forming the exhaust passage.

[0013] In some embodiments, a first connector is provided on the side of the first sidewall near the accommodating cavity, and the first temperature sensing element is connected to the first connector.

[0014] In some embodiments, the first temperature sensing element is connected to the side of the first connector facing the accommodating cavity.

[0015] In some embodiments, the first connecting member has a first connecting hole and a first fixing portion; the first temperature detecting member has a second connecting hole; the first fixing portion is inserted into the first connecting hole and the second connecting hole to connect the first temperature detecting member and the first connecting member.

[0016] In some embodiments, at least one of the first connecting hole and the second connecting hole has a first internal thread, the first fixing portion has a first external thread, the first fixing portion is connected by the first external thread and the first internal thread to connect the first temperature detecting member to the first connecting member.

[0017] In some embodiments, the battery device further comprises a battery management system, the battery management system is electrically connected to the battery and the first temperature detecting member, respectively.

[0018] In some embodiments, the battery device further comprises an electrical element, the electrical element is disposed in the box, the electrical element and the battery are electrically connected.

[0019] In some embodiments, the battery device further comprises a second connecting member, two ends of the second connecting member are connected to the electrical element and the battery, respectively, so that the electrical element is electrically connected to the battery through the second connecting member.

[0020] In some embodiments, the battery device further comprises a second temperature detecting member, the second temperature detecting member is disposed in the second connecting member, the second temperature detecting member is configured to detect the temperature of the second connecting member.

[0021] In some embodiments, the second temperature detecting member has a third connecting hole; the second connecting member has a fourth connecting hole and a second fixing portion, the second fixing portion is inserted into the third connecting hole and the fourth connecting hole to connect the second connecting member and the second temperature detecting member.

[0022] In some embodiments, at least one of the third connecting hole and the fourth connecting hole has a second internal thread, the second fixing portion has a second external thread, the second fixing portion is connected by the second external thread and the second internal thread to connect the second temperature detecting member to the second connecting member.

[0023] In some embodiments, the battery device further comprises a plurality of fasteners and a third connecting member, one end of the second connecting member is connected to the electrical element through the fastener, the other end of the second connecting member is connected to the third connecting member through the fastener to be electrically connected to the battery.

[0024] In some embodiments, the battery device further comprises a torque detection member, the torque detection member is arranged on the fastener, and the torque detection member is configured to detect the torque of the fastener.

[0025] And / or, the battery device further comprises a deformation detection member, the deformation detection member is arranged on the second connecting member, and the deformation detection member is configured to detect the deformation of the second connecting member.

[0026] In some embodiments, the battery device comprises a battery management system, the battery management system is electrically connected to at least one of the battery, the second temperature detection member, the torque detection member, and the deformation detection member, respectively.

[0027] In a second aspect, the present application provides a power consumption device, comprising the battery device in the first aspect.

[0028] The battery device and the power consumption device provided by the present application, wherein the battery device comprises a battery, a box body, and a first temperature detection member. The box body has a containing cavity, and the battery can be arranged in the containing cavity to form a protective effect on the battery by the box body, so as to avoid deformation and damage of the battery caused by collision with external substances, reduce thermal runaway of the battery caused by deformation, and improve the safety of the battery device. The box body also has an exhaust passage, which is in communication with the containing cavity, and can exhaust the gas in the containing cavity to release the pressure in the box body, so that the internal and external pressures of the box body are balanced, the deformation of the box body and the battery is avoided, thereby improving the structural stability of the battery device, and reducing the probability of thermal runaway caused by deformation of the battery, so that the safety of the battery device is enhanced. The first temperature detection member is located in the containing cavity and is arranged close to the exhaust passage, and the first temperature detection member is used to detect the temperature of the substance flowing through the exhaust passage. The user can take appropriate measures in a timely manner according to the temperature detected by the first temperature detection member, so as to ensure that the use of the battery device is more reasonable and safe. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0030] Figure 1 Schematic diagram of the battery device provided by the embodiment of the present application Figure 1 ;

[0031] Figure 2 Front view of the battery device provided by the embodiment of the present application

[0032] Figure 3 Schematic diagram of battery device provided by the embodiment of the present application Figure 2

[0033] Figure 4 Partial structure enlarged view of the dashed box in Figure 3

[0034] Figure 5 Schematic diagram of connection between the first temperature detecting member and the first connecting member in the battery device provided by the embodiment of the present application

[0035] Figure 6 Schematic diagram of connection between the second temperature detecting member and the second connecting member in the battery device provided by the embodiment of the present application

[0036] Explanation of reference signs:

[0037] 100 - battery device

[0038] 110 - battery

[0039] 120 - box body; 121 - accommodating cavity; 122 - exhaust passage; 1221 - inlet; 1222 - outlet; 123 - first side wall; 1231 - communication structure

[0040] 130 - first temperature detecting member; 131 - second connecting hole

[0041] 140 - first connecting member; 141 - first connecting hole; 142 - first fixing part

[0042] 150 - second connecting member; 151 - fourth connecting hole; 152 - second fixing part

[0043] 160 - second temperature detecting member; 161 - third connecting hole

[0044] 170 - fastener

[0045] 180 - third connecting member DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application. The following embodiments and features in the embodiments can be combined with each other without conflict, if possible.

[0047] ​​In a first aspect, the present application provides a battery device 100, which can be applied to various technical fields. For example, the battery device 100 can be applied to vehicles, energy storage devices, aircrafts, electronic devices, etc. The vehicle can be a fuel vehicle, a pure electric vehicle, or a hybrid vehicle, etc. The aircraft can be a drone, etc. The electronic device can be a desktop computer, a notebook computer, etc. The application of the battery device 100 is not limited in the embodiments of the present application.

[0048] Referring to Figure 1 In some embodiments, the battery device 100 includes a battery 110 and a box 120. The box 120 has a receiving cavity 121, and the battery 110 can be arranged in the receiving cavity 121 to form a protective effect on the battery 110 by the box 120, so as to avoid deformation and damage of the battery 110 caused by collision with external substances, reduce thermal runaway of the battery 110 caused by deformation, and improve the safety of the battery device 100.

[0049] It should be noted that the battery 110 in the embodiments of the present application can be a battery monomer, or a battery pack or a battery module composed of a plurality of battery monomers. The series connection and / or parallel connection of the plurality of battery monomers in the battery pack or the battery module are not limited in the embodiments of the present application.

[0050] During the operation of the battery 110, the battery 110 will generate heat, which will increase the pressure in the box 120. With the increase of the pressure in the box 120, the structural stability and electrochemical performance of the battery 110 will be affected, which will reduce the reliability and safety of the battery device 100.

[0051] Therefore, in combination with Figure 1 and Figure 2 In some embodiments, the box 120 further has an exhaust passage 122, which is in communication with the receiving cavity 121, and can exhaust the gas in the receiving cavity 121 to release the pressure in the box 120, so as to keep the pressure inside and outside the box 120 balanced, avoid deformation of the box 120 and the battery 110, thereby improving the structural stability of the battery device 100, reducing the probability of thermal runaway of the battery 110 caused by deformation, and enhancing the safety of the battery device 100.

[0052] The exhaust passage 122 and the accommodating cavity 121 keep in communication, and substances outside the box 120, such as dust, water vapor and the like, will also enter the accommodating cavity 121 through the exhaust passage 122. These external substances will affect the performance of the battery 110, and even reduce the service life of the battery 110. Therefore, in some embodiments, an explosion-proof valve can also be provided on the box 120, the explosion-proof valve is used to block the exhaust passage 122, and the explosion-proof valve can also be in one-way communication with the outside of the box 120. If the battery 110 is in thermal runaway, the pressure inside the box 120 rises sharply, the explosion-proof valve can be separated from the box 120 and discharged from the exhaust passage 122, or the explosion-proof valve is in the form of opening the exhaust passage 122, rapidly releasing the pressure inside the box 120, delaying the thermal runaway of the battery 110, and reducing the explosion of the battery 110 due to thermal runaway.

[0053] It is not difficult to understand that, in the process of using the battery device 100, in order to facilitate the user to grasp the temperature condition of the battery device 100 at any time, especially the temperature change in the box 120, so that the user can respond in time according to the temperature change in the box 120, and prevent the battery device 100 from occurring safety accidents. In combination with Figure 1 、 Figure 3 、 Figure 4 and Figure 5 , as an optional embodiment, the battery device 100 further comprises a first temperature detection member 130, the first temperature detection member 130 is located in the accommodating cavity 121 and is arranged close to the exhaust passage 122, and the first temperature detection member 130 is used to detect the temperature of the substance flowing through the exhaust passage 122.

[0054] It is not difficult to understand that the first temperature detection member 130 is arranged in the accommodating cavity 121 and close to the exhaust passage 122, and the substances in the box 120 flow to the exhaust passage 122, and in the process of being discharged through the exhaust passage 122, the first temperature detection member 130 can obtain the temperature of the substances, and the user can take corresponding measures in time according to the temperature detected by the first temperature detection member 130, so as to ensure that the use of the battery device 100 is more reasonable and safe.

[0055] It should be noted that the first temperature detection member 130 can be a temperature sensor, a thermistor or the like.

[0056] In some embodiments, the first temperature detection member 130 can be electrically connected with the controller of the user end, so as to show the temperature signal obtained by the first temperature detection member 130 to the user through the controller of the user end.

[0057] For example, when the battery device 100 is applied to a vehicle, the first temperature detecting member 130 can be electrically connected with a controller of the vehicle, so as to output the detected temperature value to a user through the controller of the vehicle. When the battery device 100 is applied to a computer, the first temperature detecting member 130 can be electrically connected with a controller of the computer, so as to output the detected temperature value to a user through the controller of the computer.

[0058] Of course, the battery device 100 can further comprise a battery management system (BMS), and the first temperature detecting member 130 can be electrically connected with the BMS. The BMS is electrically connected with a controller of a user terminal, so as to display the temperature signal acquired by the first temperature detecting member 130 to the user through the controller of the user terminal.

[0059] The BMS can be integrated on a circuit board in the form of an integrated circuit, and the circuit board is located in the accommodating cavity 121, so as to facilitate the electrical connection between the first temperature detecting member 130 and the circuit board. It can be understood that the circuit board and the first temperature detecting member 130 are both located in the accommodating cavity 121, which facilitates the wiring arrangement between the first temperature detecting member 130 and the circuit board, increases the production efficiency of the battery device 100, and can also reduce the length of the wiring, thereby reducing the production cost of the battery device 100.

[0060] In some embodiments, the number of exhaust passages 122 can be multiple, and the number of first temperature detecting members 130 is also multiple, and the first temperature detecting members 130 and the exhaust passages 122 are one-to-one correspondingly arranged. In this way, each exhaust passage 122 corresponds to a first temperature detecting member 130, and the temperature of each exhaust passage 122 can be independently monitored, preventing the occurrence of the case that one of the first temperature detecting members 130 is damaged or abnormally detected, avoiding user misjudgment, so as to accurately grasp the temperature condition in the battery device 100.

[0061] In combination with Figure 1 , Figure 3 , Figure 4 and Figure 5 , in some embodiments, the exhaust passage 122 has an inlet 1221 and an outlet 1222, the inlet 1221 is directed to the accommodating cavity 121, the exhaust passage 122 communicates with the accommodating cavity 121 through the inlet 1221, and the outlet 1222 of the exhaust passage 122 communicates with the outside of the box body 120, so that the substances in the accommodating cavity 121 can enter the exhaust passage 122 through the inlet 1221 and flow along the exhaust passage 122 until being discharged from the outlet 1222 of the exhaust passage 122.

[0062] The first temperature detecting member 130 in the embodiment of the present application can be arranged at the inlet 1221 of the exhaust passage 122. It is not difficult to understand that the substances in the accommodating cavity 121 flow unidirectionally to the inlet 1221 of the exhaust passage 122. Near the outlet 1222 of the exhaust passage 122, the substances exchange heat with the outside, and the temperature of the substances decreases. If the first temperature detecting member 130 is arranged near the outlet 1222 of the exhaust passage 122, the detection accuracy of the first temperature detecting member 130 will be reduced. Therefore, the first temperature detecting member 130 is arranged at the inlet 1221 of the exhaust passage 122 in the embodiment of the present application, so as to obtain accurate temperature values through the first temperature detecting member 130, so that the user can master the real, accurate and effective temperature in the battery device 100, and the use safety of the battery device 100 is enhanced.

[0063] It should be noted that the substances in the embodiment of the present application are different according to the use state of the battery device 100. For example, when the battery device 100 works normally, the substances are the air in the box. When the battery 110 of the battery device 100 has thermal runaway, the substances can be flammable gas, smoke, water vapor, etc. The embodiment of the present application does not make specific requirements thereon.

[0064] In some embodiments, when the temperature of the substances continuously obtained by the first temperature detecting member 130 within 5s-10s is 50-100℃, that is, the battery device 100 has a thermal risk, the user can obtain the temperature information as a corresponding processing measure, so as to ensure the safety of the user and reduce the safety risk of the battery device 100.

[0065] In some embodiments, the exhaust passage 122 can be formed by some external structural member, for example, a tubular structural member, etc. For example, the tubular structural member is installed in the box body 120, and the accommodating cavity 121 and the outside of the box body 120 are communicated through the tubular structural member, and the internal hollow structure of the tubular structural member forms the exhaust passage 122. However, the tubular structural member is arranged in the box body 120, and the tubular structural member occupies the internal space of the box body 120, so that the number of batteries 110 that can be accommodated in the accommodating cavity of the box body 120 decreases, the capacity of the battery device 100 decreases, the internal space structure of the box body 120 is compact, the connection of the tubular structural member and the box body 120 is difficult, and the assembly efficiency of the battery device 100 is poor. The relative positions of the exhaust passage 122 and the accommodating cavity 121 are different, the pipe layout mode of the tubular structural member is different, and the pipe is complex.

[0066] It should be noted that the shape of the cross section of the tubular structural member can be circular, square, triangular or irregular, and the embodiment of the present application does not make specific requirements thereon.

[0067] Therefore, in combination with Figure 1 ,Figure 3 、 Figure 4 and Figure 5 In an alternative embodiment of the present application, the box 120 has a first side wall 123, and the first side wall 123 has a communication structure 1231, and the communication structure 1231 has a communication cavity, and the communication cavity forms the exhaust passage 122. In this way, the exhaust passage 122 is formed by the simple communication structure 1231 by arranging the communication structure 1231 on the first side wall 123. Compared with the foregoing embodiment, the redundant installation space and installation structure in the box 120 can be reduced, the volume of the accommodation cavity 121 is increased, so that the accommodation cavity 121 can accommodate more batteries 110, and the electric capacity of the battery device 100 is improved. Furthermore, the communication structure 1231 can be an integral part of the box 120, which facilitates the production of the box 120, thereby improving the assembly efficiency and production efficiency of the battery device 100.

[0068] For example, the communication structure 1231 can be a sleeve, and the inner wall of the sleeve surrounds the communication cavity.

[0069] In some embodiments, the communication structure 1231 can also be a hole structure, for example, a through hole, and the through hole penetrates the first side wall to surround the communication cavity by the hole wall. It should be noted that the cross-sectional shape of the hole structure can be any shape such as a circular shape, a square shape, etc., and the communication cavity can extend along a straight line or a curve, and the present application does not make any requirements thereon.

[0070] The first side wall 123 can be one or both of the two side walls of the box 120 along the X direction, or one or both of the two side walls of the box 120 along the Y direction, or one or both of the two side walls of the box 120 along the Z direction.

[0071] Referring to Figure 5 For example, the first side wall 123 is the side wall of the box 120 opposite to the pole of the battery 110. It is not difficult to understand that, in use, the temperature of the pole of the battery 110 is relatively high due to the large current density, and the temperature of the pole is relatively high compared with other parts of the battery 110, and when the battery 110 is out of control, the substances in the battery 110 are also easy to be ejected from the pole. Therefore, the first side wall 123 is opposite to the pole of the battery 110, which can reduce the flow path of the substances in the box 120, so that the substances can be quickly discharged, thereby improving the safety of the battery device 100.

[0072] The first temperature connecting piece can be connected to the inlet 1221 of the exhaust passage 122 in various ways, in combination with Figure 4 and Figure 5As an optional embodiment, the first side wall 123 is provided with a first connecting piece 140 close to one side of the accommodating cavity 121, and the first temperature detecting piece 130 is connected with the first connecting piece 140. In this way, through the connection of the first temperature detecting piece 130 and the first connecting piece 140, the first temperature detecting piece 130 is fixed at the position of the inlet 1221 of the exhaust passage 122, and the two can be stably connected, preventing the accuracy of the temperature of the substance obtained by the first temperature detecting piece 130 from being poor due to the movement of the position of the first temperature detecting piece 130.

[0073] For example, the first connecting piece 140 can be a plate-shaped piece, a block-shaped piece, etc., and the embodiments of the present application do not make any requirements thereon. The first connecting piece 140 can be a metal piece or a plastic piece, and the embodiments of the present application do not make any requirements on the material of the first connecting piece 140.

[0074] It should be noted that the first temperature detecting piece 130 can be connected to the side wall of the first connecting piece 140 extending along the X direction, or connected to the side wall of the first connecting piece 140 extending along the Y direction, or connected to the side wall of the first connecting piece 140 extending along the Z direction, and the embodiments of the present application do not make any specific requirements thereon.

[0075] Referring to Figure 5 In some embodiments, the first temperature detecting piece 130 is connected to the side of the first connecting piece 140 facing the accommodating cavity 121. In this way, the first temperature detecting piece 130 can more directly approach the accommodating cavity 121, thereby improving the accuracy and reliability of the temperature value obtained by the first temperature detecting piece 130.

[0076] The connection structure of the first temperature detecting piece 130 and the first connecting piece 140 can be various, and as an optional embodiment of the present application, the first connecting piece 140 has a first connecting hole 141 and a first fixing part 142; the first temperature detecting piece 130 has a second connecting hole 131; the first fixing part 142 is arranged in the first connecting hole 141 and the second connecting hole 131 to connect the first temperature detecting piece 130 and the first connecting piece 140.

[0077] In the embodiments of the present application, the first fixing part 142 can be a columnar structure, and the cross-sectional shape of the first fixing part 142 can be square, circular, triangular, polygonal, irregular, etc., and correspondingly, the shapes of the first connecting hole 141 and the second connecting hole 131 match the cross-sectional shape of the first fixing part 142. In this way, the embodiments of the present application form a simple hole shaft connection structure by arranging the first fixing part 142 in the first connecting hole 141 and the second connecting hole 131, which facilitates the connection of the first temperature detecting piece 130 and the first connecting piece 140, thereby facilitating the assembly and production of the battery device 100.

[0078] It should be noted that when the first fixed part 142 is arranged in the first connecting hole 141 and the second connecting hole 131, the first fixed part 142 can be connected with the first connecting hole 141 and the second connecting hole 131 in an interference fit manner, so as to avoid the first temperature detection member 130 and the first connecting member 140 from being disconnected during use, enhance the connection stability between the first temperature detection member 130 and the first connecting member 140, and avoid the position of the first temperature detection member 130 from being moved to cause the accuracy and stability of the temperature value obtained by the first temperature detection member 130 to be poor, so as to ensure that the user receives accurate detection results, prevent the user from misjudging, and enhance the use safety of the battery device 100.

[0079] It should be noted that along the axial direction of the first fixed part 142, the first fixed part 142 can pass through the first connecting hole 141 and the second connecting hole 131 in sequence, or pass through the second connecting hole 131 and the first connecting hole 141 in sequence, and the present application embodiment does not require this.

[0080] It can be understood that when the first fixed part 142 is arranged in the first connecting hole 141 and the second connecting hole 131, errors will inevitably occur in the manufacturing process of the first fixed part 142, the first connecting hole 141 and the second connecting hole 131, which will reduce the stability of the hole shaft connection structure formed by the first fixed part 142, the first connecting hole 141 and the second connecting hole 131, and is not convenient to install.

[0081] In order to solve the above problems, in an optional embodiment of the present application, at least one of the first connecting hole 141 and the second connecting hole 131 has a first internal thread, the first fixed part 142 has a first external thread, and the first fixed part 142 is connected through the cooperation of the first external thread and the first internal thread, so as to connect the first temperature detection member 130 to the first connecting member 140.

[0082] Optionally, when the first connecting hole 141 has the first internal thread, the first fixed part 142 can first pass through the second connecting hole 131 of the first temperature detection member 130, and then be connected through the cooperation of the first external thread of the first fixed part 142 and the first internal thread of the first connecting hole 141. It should be noted that the second connecting hole 131 at this time can be a light hole.

[0083] Optionally, when the second connecting hole 131 has the first internal thread, the first external thread of the first fixed part 142 and the first internal thread of the second connecting hole 131 are connected, and then the first fixed part 142 is arranged in the first connecting hole 141 of the first connecting member 140 and forms a hole shaft connection structure with the first connecting hole 141. It should be noted that the first connecting hole 141 at this time can be a light hole.

[0084] Optionally, when the first connecting hole 141 and the second connecting hole 131 both have the first internal thread, the first external thread of the first fixing part 142 can be connected with the first internal thread of the second connecting hole 131 first, and then connected with the first internal thread of the first connecting hole 141.

[0085] In this way, the first temperature detecting part 130 and the first connecting part 140 form a stable thread fastening connection structure through the first internal thread and the first external thread, and form a mechanical fastening force through the thread connection, so that the connection structure of the first temperature detecting part 130 and the first connecting part 140 is compact and stable, and the first temperature detecting part 130 and the first connecting part 140 can be prevented from being disconnected during long-term use of the battery device 100.

[0086] In some embodiments, the battery device 100 further comprises an electrical element, which is arranged in the box 120 and is electrically connected with the battery 110.

[0087] For example, the electrical element includes a power distribution element, a control switch, a circuit board, and other battery devices 100, and the embodiments of the present application do not make any requirements thereon.

[0088] Optionally, the electrical element and the battery 110 can be electrically connected in various ways, such as wire connection, metal connecting part, etc., and the embodiments of the present application do not make any specific requirements thereon.

[0089] In combination with Figure 1 , Figure 3 , Figure 4 and Figure 6 , as an optional connection mode in the embodiments of the present application, the battery device 100 further comprises a second connecting part 150, both ends of the second connecting part 150 are connected with the electrical element and the battery 110, so that the electrical element is electrically connected with the battery 110 through the second connecting part 150.

[0090] For example, the second connecting part 150 can be a metal connecting part, such as a copper bar, an aluminum bar, etc., and the embodiments of the present application do not make any specific requirements on the material of the second connecting part 150, and any second connecting part 150 that can electrically connect the electrical element and the battery 110 can be used.

[0091] The connection between the second connecting member 150 and the battery 110 can be achieved by welding or fastening, and the connection between the second connecting member 150 and the electrical element can also be achieved by welding or fastening. It is not difficult to understand that if the connection between the second connecting member 150 and the electrical element, the battery 110 is unstable, for example, if the welding is loose, or the fastener is loose, the resistance between the battery 110 and the electrical element will increase, at this time, the heat generated on the second connecting member 150 rises, which is easy to cause the temperature of the battery device 100 to rise and form a hidden danger of heat safety, resulting in poor safety of the battery device 100.

[0092] In combination with Figure 1 , Figure 3 , Figure 4 and Figure 6 , in order to solve the above problems, the battery device 100 in the embodiment of the application further comprises a second temperature detection member 160, the second temperature detection member 160 is arranged on the second connecting member 150, and the second temperature detection member 160 is configured to detect the temperature of the second connecting member 150. In this way, by arranging the second temperature detection member 160, the temperature of the second connecting member 150 can be obtained in real time, and by the change of the temperature of the second connecting member 150, the connection state between the second connecting member 150, the electrical element and the battery 110 can be determined, so that the user can respond in time according to the temperature value of the second connecting member 150 obtained by the second temperature detection member 160, reduce the safety hazard of the battery device 100, and improve the use safety of the battery device 100.

[0093] In some embodiments, when the temperature value obtained by the second temperature detection member 160 is greater than or equal to 75℃, the user can judge that the connection of the second connecting member 150 is abnormal, and take measures in time to reduce the safety risk of the battery device 100, thereby enhancing the safety of the battery device 100.

[0094] The connection structure of the second temperature detection member 160 and the second connecting member 150 has many kinds, as an optional embodiment of the application, the second temperature detection member 160 has a third connecting hole 161; the second connecting member 150 has a fourth connecting hole 151 and a second fixing part 152, the second fixing part 152 is arranged in the third connecting hole 161 and the fourth connecting hole 151 to connect the second connecting member 150 and the second temperature detection member 160.

[0095] In the embodiments of the present application, the second fixing portion 152 can be a columnar structure or the like, and the cross-sectional shape of the second fixing portion 152 can be square, circular, triangular, polygonal, irregular, or the like. Correspondingly, the shapes of the third connecting hole 161 and the fourth connecting hole 151 match the cross-sectional shape of the second fixing portion 152. In this way, the second fixing portion 152 is arranged in the third connecting hole 161 and the fourth connecting hole 151 to form a simple hole-shaft connecting structure, facilitating the connection of the second temperature detecting member 160 and the second connecting member 150, thereby facilitating the assembly and production of the battery device 100.

[0096] It should be noted that when the second fixing portion 152 is arranged in the third connecting hole 161 and the fourth connecting hole 151, the second fixing portion 152 and the third connecting hole 161 and the fourth connecting hole 151 can be connected in an interference fit manner, so as to avoid the disconnection of the second temperature detecting member 160 and the second connecting member 150 during use, enhance the connection stability between the second temperature detecting member 160 and the second connecting member 150, and avoid the deterioration of the accuracy and stability of the temperature value obtained by the second temperature detecting member 160 due to the position movement of the second temperature detecting member 160, thereby ensuring that the user receives accurate detection results, preventing the user from misjudging, and enhancing the use safety of the battery device 100.

[0097] It should be noted that along the axial direction of the second fixing portion 152, the second fixing portion 152 can pass through the third connecting hole 161 and the fourth connecting hole 151 in sequence, or pass through the third connecting hole 161 and the fourth connecting hole 151 in sequence, and the embodiments of the present application do not make any requirements thereon.

[0098] It can be understood that when the second fixing portion 152 is arranged in the third connecting hole 161 and the fourth connecting hole 151, the second fixing portion 152, the third connecting hole 161 and the fourth connecting hole 151 will inevitably have errors during manufacturing, resulting in a decrease in the hole-shaft fit connecting stability of the second fixing portion 152 and the third connecting hole 161 and the fourth connecting hole 151, and inconvenience in installation.

[0099] In order to solve the above problems, in an alternative embodiment of the present application, at least one of the third connecting hole 161 and the fourth connecting hole 151 has a second internal thread, and the second fixing portion 152 has a second external thread. The second fixing portion 152 is connected in a second external thread and second internal thread fit manner, so as to connect the second temperature detecting member 160 to the second connecting member 150.

[0100] Optionally, when the third connecting hole 161 has the second internal thread, the second external thread of the second fixing part 152 and the second internal thread of the third connecting hole 161 are connected in cooperation, and then the second fixing part 152 is arranged in the fourth connecting hole 151 of the second connecting part 150, and the fourth connecting hole 151 forms a hole shaft connecting structure with the second fixing part 152. It should be noted that the fourth connecting hole 151 at this time can be a light hole.

[0101] Optionally, when the fourth connecting hole 151 has the second internal thread, the second fixing part 152 can first pass through the third connecting hole 161 of the second temperature detection part 160, and then the second fixing part 152 is connected in cooperation with the second internal thread of the fourth connecting hole 151 through the second external thread of the second fixing part 152. It should be noted that the third connecting hole 161 at this time can be a light hole.

[0102] Optionally, when the third connecting hole 161 and the fourth connecting hole 151 both have the second internal thread, the second external thread of the second fixing part 152 can be connected in cooperation with the second internal thread of the third connecting hole 161 first, and then connected in cooperation with the second internal thread of the fourth connecting hole 151.

[0103] In this way, the second temperature detection part 160 and the second connecting part 150 form a stable threaded fastening connecting structure through the second internal thread and the second external thread, and form a mechanical fastening force through the threaded cooperation connection, so that the connecting structure of the second temperature detection part 160 and the second connecting part 150 is compact and stable, so as to prevent the second temperature detection part 160 and the second connecting part 150 from being disconnected during the long-term use of the battery device 100, thereby ensuring that the second temperature detection part 160 can continuously and stably obtain the temperature of the second connecting part 150.

[0104] In some embodiments, the battery device 100 further comprises a plurality of fasteners 170 and a third connecting part 180, one end of the second connecting part 150 is connected with the electrical element through the fastener 170, and the other end of the second connecting part 150 is connected with the third connecting part 180 through the fastener 170 to be in electrical conduction with the battery 110. In this way, the second connecting part 150 is connected with the electrical element and the third connecting part 180 through the fastener 170 respectively, so as to form a mechanical fastening force between the second connecting part 150 and the electrical element, and between the second connecting part 150 and the third connecting part 180 through the fastener 170, so as to ensure that the battery 110 and the electrical element are stably connected with each other through the second connecting part 150 and the third connecting part 180 respectively.

[0105] In some embodiments, the fastener 170 can be a threaded fastener, such as a bolt, a screw, etc. The embodiments of the present application do not make any requirements in this regard.

[0106] However, when the fastener 170 is a threaded fastener, the battery device 100 is prone to fastener 170 untightening due to jolting and natural aging of the fastener 170 during transportation or use. It can be understood that the fastener 170 untightening, the connection between the second connecting member 150 and the third connecting member 180, and the connection between the second connecting member 150 and the electrical element are all unstable, especially during use of the battery device 100, the unstable connection of the second connecting member 150 will cause the resistance of the second connecting member 150 to increase, thereby generating a large amount of joule heat, forming a safety hazard of the battery device 100.

[0107] It can be understood that by detecting the temperature of the second connecting member 150 through the second temperature detection member 160 in the embodiments of the present application, when the temperature of the second connecting member 150 abnormally rises, the user can determine whether the fastener 170 has untightened or the connection of the second connecting member 150 is unstable according to the temperature value obtained by the second temperature detection member 160, so as to respond in time to prevent the thermal runaway and other heating failures of the battery device 100 caused by the untightening of the fastener 170 and the unstable connection of the second connecting member 150, thereby enhancing the use safety of the battery device 100.

[0108] In some embodiments, the battery device 100 further comprises a torque detection member (not shown in the figure) disposed on the fastener 170, and the torque detection member is configured to detect the torque of the fastener 170. In this way, the torque of the fastener 170 is detected through the connection of the torque detection member and the fastener 170, so as to determine whether the fastener 170 has untightened according to the change of the torque of the fastener 170.

[0109] In some embodiments, the torque detection member and the second temperature detection member 160 can be combined with each other, so that the connection state between the battery 110, the electrical element and the second connecting member 150 is determined to be stable or not according to the torque and the temperature. Through the combination of multiple different detection methods, the user can accurately determine the use condition of the battery device 100, and the safety of the battery device 100 is improved.

[0110] In some embodiments, the battery device 100 further comprises a deformation detection member disposed on the second connecting member 150, and the deformation detection member is configured to detect the deformation of the second connecting member 150.

[0111] It is understandable that, after the second connecting piece 150 is connected with the fastener 170 and the third connecting piece 180 and the electrical element, the second connecting piece 150 will be deformed under the mechanical fastening force of the fastener 170, and the second connecting piece 150 will also be deformed as the fastener 170 is untwisted. Therefore, the deformation of the second connecting piece 150 is obtained by the deformation detection piece, which helps the user to determine whether the fastener 170 is untwisted, thereby preventing the battery device 100 from being extremely heated due to the increased resistance between the electrical element, the second connecting piece 150 and the battery 110, and further ensuring the use safety of the battery device 100.

[0112] It should be noted that the second temperature detection piece 160, the torque detection piece and the deformation detection piece in the embodiments of the present application can be combined with each other. The present application does not make specific requirements for the combination of the three. Different detection methods are used by the combination of the three, so that the user can accurately determine the use of the battery device 100 and improve the safety of the battery device 100. The deformation detection piece can be a stress strain gauge.

[0113] In some embodiments, a battery management system (BMS) is electrically connected to at least one of the battery 110, the second temperature detection piece 160, the torque detection piece and the deformation detection piece.

[0114] It should be noted that the BMS can be integrated on the circuit board in the form of an integrated circuit, and the BMS can be the same as or different from the BMS mentioned in the foregoing embodiments, and the number of circuit boards can be one or more, and the present application does not make specific requirements therefor.

[0115] In a second aspect, the embodiments of the present application also provide a power consumption device, which comprises the battery device 100 provided in the first aspect.

[0116] In some embodiments, the power consumption device comprises an energy storage device, an aircraft, a vehicle, an electronic device, etc., and the present application does not make specific requirements therefor.

[0117] The power consumption device provided by the embodiments of the present application can further enhance the safety of the power consumption device by improving the safety of the battery device 100 due to the fact that the power consumption device comprises the battery device 100 provided in the first aspect.

[0118] It should be noted that a reference to "one embodiment," "an embodiment," "example embodiment," "some embodiments," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0119] In general, terminology can be understood at least in part from usage in context. For example, terms, such as "one or more" as used herein, can be understood as describing any feature, structure, or characteristic in a singular or multiple sense, depending at least in part on the context in which the term is used. Similarly, terms, such as "a," "an," or "the," again can be understood as describing either a singular or plural number of any feature, structure, or characteristic, depending at least in part on the context in which the term is used.

[0120] It will be readily understood that the terms "on," "above," and "over," as used herein, should not be construed as limiting the location of one element relative to another, but rather should be construed as indicating a relative position at a distance above, below, or in any other direction relative to another element. Further, it will be readily understood that the terms "on," "above," and "over," as used herein, should not be construed as limiting the location of one element relative to another, but rather should be construed as indicating a relative position at a distance above, below, or in any other direction relative to another element.

[0121] Further, spatially relative terms, such as "beneath," "below," "lower," "above," "upper," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0122] Finally, it should be noted that the above-described embodiments are merely exemplary of the application and should not be used in a manner to limit the scope of the application. Those skilled in the art will be able to make modifications and / or substitutions for elements disclosed without departing from the scope of the application.

Claims

1. A battery device, characterized by, The battery (110) is provided in the accommodating cavity (121) of the box body (120). The first temperature detecting member (130) is arranged in the accommodating cavity (121) and close to the exhaust passage (122). The first temperature detecting member (130) is arranged in the inlet (1221) of the exhaust passage (122). The first side wall (123) of the box body (120) has a communication structure (1231) with a communication cavity forming the exhaust passage (122).

2. The battery device according to claim 1, characterized by The first temperature detecting member (130) is connected to the first connecting member (140) on the side close to the accommodating cavity (121).

3. The battery device of claim 1, wherein The first connecting member (140) has a first connecting hole (141) and a first fixing part (142).

4. The battery device of claim 3, wherein The first temperature detecting member (130) has a second connecting hole (131).

5. The battery device of claim 4, wherein, The first fixing part (142) is arranged in the first connecting hole (141) and the second connecting hole (131) to connect the first temperature detecting member (130) and the first connecting member (140).

6. The battery device of claim 4, wherein The first connecting hole (141) and the second connecting hole (131) have a first internal thread.

7. The battery device of claim 6, wherein The first fixing part (142) has a first external thread.

8. The battery device according to any one of claims 1 to 7, wherein The first temperature detecting member (130) is connected to the first connecting member (140) through the first external thread and the first internal thread.

9. The battery device according to any one of claims 1 to 7, wherein The battery management system is electrically connected to the battery (110) and the first temperature detecting member (130).

10. The battery device of claim 9, wherein, The electrical element is arranged in the box body (120) and electrically connected to the battery (110).

11. The battery device of claim 10, wherein, The second connecting member (150) is electrically connected to the electrical element and the battery (110). The second temperature detecting member (160) is arranged in the second connecting member (150) and configured to detect the temperature of the second connecting member (150).

12. The battery device of claim 11, wherein, The second temperature detecting member (160) has a third connecting hole (161); the second connecting member (150) has a fourth connecting hole (151) and a second fixing part (152), the second fixing part (152) is connected through the third connecting hole (161) and the fourth connecting hole (151), so that the second connecting member (150) and the second temperature detecting member (160) are connected.

13. The battery device of claim 12, wherein, At least one of the third connecting hole (161) and the fourth connecting hole (151) has a second internal thread, the second fixing part (152) has a second external thread, the second fixing part (152) is connected through the second external thread and the second internal thread, so that the second temperature detecting member (160) is connected to the second connecting member (150).

14. The battery device of claim 11, wherein, Further comprising several fasteners (170) and a third connecting member (180), one end of the second connecting member (150) and the electrical element are connected through the fasteners (170), the other end of the second connecting member (150) and the third connecting member (180) are connected through the fasteners (170) to be electrically connected with the battery (110).

15. The battery device of claim 14, wherein, Further comprising a torque detecting member, the torque detecting member is arranged on the fastener (170), the torque detecting member is configured to detect the torque of the fastener (170); And / or, the battery device further comprises a deformation detecting member, the deformation detecting member is arranged on the second connecting member (150), the deformation detecting member is configured to detect the deformation of the second connecting member (150).

16. The battery device of claim 15, wherein, A battery management system is included, the battery management system is electrically connected with at least one of the battery (110), the second temperature detecting member (160), the torque detecting member and the deformation detecting member respectively.

17. An electrical device, comprising: Including: The battery device (100) according to any one of claims 1-16.

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