Vehicles and their batteries

Abstract

This application provides a vehicle and its battery. The battery includes a housing, battery cells, a fuse, a first sealing cover, a second sealing cover, and a battery management system. The housing has a first wall and a receiving cavity. The first wall has a through hole that connects the receiving cavity and the outside of the housing. The battery cells are housed within the receiving cavity. The fuse is connected to the first wall within the receiving cavity and is electrically connected to the battery cells. The first sealing cover is disposed on the first wall corresponding to the through hole, used to cover the opening connecting the sealing through hole to the outside. The second sealing cover is sealed to the first wall and is fitted over the first sealing cover. The battery management system is electrically connected to the battery cells within the receiving cavity and is also electrically connected to the fuse. The battery management system is configured to acquire a first control signal and send a fuse-breaking signal to the fuse to control the fuse to blow. The battery provided in this application simplifies the fuse replacement process in cases of frequent fuse blowing.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a vehicle and its battery. Background Technology

[0002] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools. Batteries can include nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, and rechargeable alkaline zinc-manganese batteries.

[0003] In the development of battery technology, in addition to improving battery performance, ease of maintenance is also an issue that cannot be ignored. Therefore, how to improve the ease of battery maintenance is a technical problem that needs continuous improvement in battery technology. Summary of the Invention

[0004] This application provides a vehicle and its battery that, in the event of a blown fuse, facilitates the replacement of the fuse, thereby improving the convenience of battery maintenance.

[0005] On one hand, this application provides a battery including a housing, a battery cell, a fuse, a first sealing cover, a second sealing cover, and a battery management system; the housing has a first wall and a receiving cavity, the first wall has a through hole communicating with the outside of the receiving cavity and the housing; the battery cell is received in the receiving cavity; the fuse is connected to the first wall in the receiving cavity and is electrically connected to the battery cell; the first sealing cover is provided on the first wall corresponding to the through hole, for covering the opening of the sealing through hole connected to the outside; the second sealing cover is sealed to the first wall and is sleeved on the first sealing cover; the battery management system is electrically connected to the battery cell in the receiving cavity and electrically connected to the fuse, and the battery management system is configured to acquire a first control signal and send a fuse-breaking signal to the fuse to control the fuse to blow.

[0006] In some embodiments, the first control signal includes a thermal runaway signal. The battery management system includes a detection unit and a control unit. The detection unit is electrically connected to a battery cell, and the control unit is electrically connected to the detection unit and a fuse. The detection unit is used to detect at least one of the temperature, voltage, and air pressure of the battery cell. The detection unit is configured to send a thermal runaway signal to the control unit when the temperature of the battery cell exceeds a temperature threshold, the voltage exceeds a voltage threshold, or the air pressure exceeds a pressure threshold, so that the control unit sends a fuse-breaking signal to the fuse.

[0007] In some embodiments, the first control signal includes a short-circuit signal, the battery management system includes a control unit and a detection circuit, the detection circuit is electrically connected to a battery cell, and the control unit is electrically connected to the detection circuit and a fuse; the detection circuit is configured to send a short-circuit signal to the control unit when the current exceeds a current threshold, so that the control unit sends a fuse-breaking signal to the fuse.

[0008] In some embodiments, the battery includes a relay, and the detection circuit is connected in parallel with the relay.

[0009] In some embodiments, the first control signal includes an overcurrent signal, the battery includes a power distribution unit electrically connected to a battery cell and electrically connected to a battery management system; the power distribution unit is configured to detect the charging current of the battery and, when the charging current is greater than a first threshold, send an overcurrent signal to the battery management system so that the battery management system sends a fuse trip signal to the fuse.

[0010] On the other hand, embodiments of this application provide a vehicle including the battery provided in any of the above embodiments, the battery being used to provide electrical energy.

[0011] In some embodiments, the vehicle includes a control module electrically connected to a battery management system; a first control signal includes a vehicle out-of-control signal, and the control module is configured to send a vehicle out-of-control signal to the battery management system after acquiring a vehicle operation abnormality signal, so that the battery management system sends a fuse trip signal to the fuse.

[0012] In some embodiments, the operational anomaly signal includes a brake failure signal, the vehicle includes a braking system, and the control module is configured to receive a brake failure signal from the braking system in order to send a vehicle out-of-control signal to the battery management system.

[0013] In some embodiments, the abnormal operation signal includes a fire signal, the vehicle includes a fire detection module electrically connected to a control module; the control module is configured to receive the fire signal sent by the fire detection module in order to send a vehicle out of control signal to the battery management system.

[0014] In some embodiments, the vehicle includes an airbag control module electrically connected to a battery management system; a first control signal includes a collision signal, and the airbag control module is configured to send the collision signal to the battery management system to cause the battery management system to send a fuse trip signal.

[0015] In some embodiments, the vehicle further includes an acceleration sensor electrically connected to the airbag control module; the acceleration sensor is used to detect the acceleration of the vehicle and transmit it to the airbag control module, which is configured to send a collision signal to the battery management system when the vehicle's acceleration exceeds an acceleration threshold.

[0016] In some embodiments, the vehicle further includes an airbag electrically connected to an airbag control module. The airbag is configured to send an airbag deployment signal to the airbag control module when it deploys, and the airbag is configured to send a collision signal to the battery management system when it receives both the airbag deployment signal and a collision signal.

[0017] The vehicle and its battery provided in this application embodiment are sealed to the first wall by setting a first sealing cover and a second sealing cover respectively, and both of them cover the through hole. This is beneficial to improving the sealing performance of the through hole of the box. After the battery management system triggers the fuse to blow, during the process of replacing the fuse, after the first sealing cover and the second sealing cover are sealed to the first wall respectively, the process of sealing test of the box can be omitted. While improving the sealing performance of the box, it is also beneficial to simplify the process of replacing the fuse after frequent fuse blowing and improve the efficiency of fuse replacement. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the vehicle structure provided in the embodiments of this application;

[0020] Figure 2 This is a schematic diagram of the battery structure after omitting some parts of the structure provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the battery module in the battery provided in the embodiment of this application;

[0022] Figure 4 This is a schematic diagram of another battery structure provided in an embodiment of this application;

[0023] Figure 5 This is an exploded view of a portion of the battery structure from one perspective, as provided in an embodiment of this application.

[0024] Figure 6 This is a partial cross-sectional view of the battery provided in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the battery structure after omitting some parts of the structure provided in the embodiments of this application;

[0026] Figure 8 This is a partial structural schematic diagram of the vehicle provided in the embodiments of this application.

[0027] The accompanying drawings are not necessarily drawn to scale.

[0028] The reference numerals in the detailed embodiments are as follows:

[0029] 1. Vehicle; 1a. Motor; 1b. Controller;

[0030] 10. Battery; 11. Housing; 11a. Receiving cavity; 111. First housing section; 112. Second housing section; 113. First wall; 113a. Through hole;

[0031] 20. Battery module;

[0032] 30. Battery cell;

[0033] 40. Fuse;

[0034] 51. First sealing cap; 52. Second sealing cap;

[0035] 60. Battery management system; 61. Detection unit; 62. Control unit; 63. Detection circuit;

[0036] 70. Matching unit;

[0037] 2. Control module; 3. Braking system; 4. Fire detection module; 5. Airbag control module; 6. Airbag. Detailed Implementation

[0038] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended only to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0040] It should be noted that the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0041] It should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] As a crucial component within a battery, the fuse is typically connected in series in the high-voltage circuit. When a safety risk exists, the fuse melts, breaking the internal circuit and preventing further spread or escalation of the safety hazard, thus protecting the battery. Once a fuse blows, it cannot be reset; the battery will only function normally after the fuse is replaced. The fuse is installed inside the battery casing. After fuse replacement, the casing must be sealed to reduce the risk of external substances such as water and oxygen entering and damaging the internal battery components.

[0043] In related technologies, fuses blow under various operating conditions to ensure timely power disconnection and battery safety. After a fuse blows, it needs to be replaced promptly, resulting in frequent fuse replacements. After each fuse replacement, a sealing test of the battery casing is required to ensure its airtightness. However, during battery operation, to ensure safety, the fuse is frequently triggered, leading to further frequent replacements. Each time a fuse is replaced, a sealing test of the casing is necessary to guarantee its airtightness and improve battery safety. This makes the fuse replacement process complex and time-consuming.

[0044] In view of this, embodiments of this application provide a battery and a vehicle using the battery.

[0045] The battery provided in this application embodiment can be a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or battery pack. A battery generally includes a housing for encapsulating one or more battery cells. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0046] Battery cells can include lithium-ion rechargeable battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc., and this application embodiment is not limited to these. Battery cells can be cylindrical, flat, cuboid, or other shapes, etc., and this application embodiment is not limited to these. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application embodiment is not limited to these.

[0047] A single battery cell includes electrode components and an electrolyte. The electrode components include a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode components. The positive electrode includes a positive current collector and a positive active material layer, with the active material layer coated on the surface of the current collector. The current collector includes a current-collecting portion and a positive convex portion protruding from the current-collecting portion. The current-collecting portion is coated with the active material layer, while at least a portion of the positive convex portion is not coated with the active material layer; the positive convex portion serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the active material layer includes the active material, which can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer, the negative active material layer being coated on the surface of the negative current collector. The negative current collector includes a negative current collection portion and a negative current protrusion protruding from the negative current collection portion. The negative current collection portion is coated with the negative active material layer, and at least a portion of the negative current protrusion is not coated with the negative active material layer; the negative current protrusion serves as a negative electrode tab. The material of the negative current collector can be copper, and the negative active material layer includes a negative active material, which can be carbon or silicon, etc. To ensure that a large current can pass through without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0048] To illustrate the technical solutions described in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0049] like Figure 1 As shown, a battery 10 is installed inside the vehicle 1. The battery 10 can be located at the bottom, front or rear of the vehicle 1. The battery 10 can be used to power the vehicle 1. For example, the battery 10 can be used as the operating energy source for the vehicle 1.

[0050] Vehicle 1 may also include a controller 1b and a motor 1a. The controller 1b is used to control the battery 10 to supply power to the motor 1a, for example, for the power needs of vehicle 1 during starting, navigation and driving.

[0051] In some embodiments of this application, the battery 10 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0052] In battery 10, there can be one or more battery cells. If there are multiple battery cells, they can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells are connected in both series and parallel. Multiple battery cells can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of the multiple battery cells is housed within a casing. For example... Figure 2 As shown, multiple battery cells can also be connected in series, parallel, or mixed to form a battery module 20. Multiple battery modules 20 can then be connected in series, parallel, or mixed to form a whole and housed in a casing.

[0053] For example, such as Figure 3 As shown, Figure 3 for Figure 2 The diagram shows the structure of the battery module 20. In the battery module 20, there are multiple battery cells 30. These multiple battery cells 30 are first connected in series, parallel, or in a mixed configuration to form the battery module 20. The multiple battery modules 20 are then connected in series, parallel, or in a mixed configuration to form a whole, which is housed within a casing.

[0054] Optionally, the multiple battery cells 30 in the battery module 20 can be electrically connected through a busbar component to achieve parallel, series, or mixed connection of the multiple battery cells 30 in the battery module 20.

[0055] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the battery 10 provided according to an embodiment of this application includes a housing 11, a battery cell 30, a fuse 40, a first sealing cover 51, a second sealing cover 52, and a battery management system 60. The housing 11 has a first wall 113 and a receiving cavity 11a. The first wall 113 has a through hole 113a, which connects the receiving cavity 11a and the outside of the housing 11. The battery cell 30 is housed within the receiving cavity 11a. The fuse 40 is connected to the first wall 113 within the receiving cavity 11a and is electrically connected to the battery cell 30. The first sealing cover 51 is disposed on the first wall 113 corresponding to the through hole 113a, and is used to cover the opening of the through hole 113a that connects to the outside. The second sealing cover 52 is sealed to the first wall 113 and is sleeved on the first sealing cover 51. The battery management system 60 is electrically connected to the battery cell 30 within the accommodating cavity 11a and to the fuse 40. The battery management system 60 is configured to acquire a first control signal and send a fuse-breaking signal to the fuse 40 to control the fuse 40 to blow.

[0056] The housing 11 may include a first housing portion 111 and a second housing portion 112, which overlap each other to define a receiving cavity 11a for accommodating the battery cell 30. The second housing portion 112 may be a hollow structure with one open end, and the first housing portion 111 may be a plate-like structure, covering the open side of the second housing portion 112 to form a housing 11 with the receiving cavity 11a. Alternatively, both the first housing portion 111 and the second housing portion 112 may be hollow structures with one open side, with the open side of the first housing portion 111 covering the open side of the second housing portion 112 to form a housing 11 with the receiving cavity 11a. Of course, the first housing portion 111 and the second housing portion 112 may be of various shapes, such as cylinders, cuboids, etc.

[0057] Optionally, the first wall 113 may be at least a portion of the first housing portion 111, or the first wall 113 may be at least a portion of the second housing portion 112.

[0058] The fuse 40 is electrically connected to the battery management system 60. After the battery management system 60 receives the first control signal, it sends a fuse-breaking signal to the fuse 40 to control the fuse 40 to blow.

[0059] Specifically, the first control signal can be a high temperature, high pressure, or thermal runaway signal sent by the battery cell 30 to the battery management system 60. Of course, when the battery 10 is applied to the vehicle 1, the first control signal can also be a vehicle 1 runaway signal sent by the vehicle 1 control module 2 to the battery management system 60.

[0060] The fuse signal sent by the battery management system 60 to the fuse 40 can be a current of appropriate magnitude and duration flowing to the fuse 40, so that the fuse 40 melts under the action of a large current for a certain duration, thereby disconnecting the high-voltage circuit inside the battery 10.

[0061] The fuse 40 is installed on the first wall 113. During the replacement of the fuse 40, the fuse 40 enters and exits the receiving cavity 11a through the through hole 113a. The fuse 40 is electrically connected to the battery cell 30 to connect the high-voltage circuit formed by the fuse 40 and the battery cell 30 in series. After the fuse 40 melts, the high-voltage circuit inside the battery 10 is broken, preventing the spread or development of safety risks such as high temperature, high pressure or thermal runaway inside the battery 10 or the vehicle 1.

[0062] Since the fuse 40 is located on the first wall 113, and the battery management system 60 needs to be electrically connected to the fuse 40 to control the fuse 40 to blow in a timely manner, the battery management system 60 can be located inside the battery 10 on the side close to the fuse 40 to reduce the connection lines between the fuse 40 and the battery management system 60 and optimize the wiring layout inside the battery 10.

[0063] The first sealing cover 51 is sealed to the first wall 113, and the two can be sealed together by a sealing element or other structure. The first sealing cover 51 is provided on the first wall 113 corresponding to the through hole 113a. The first sealing cover 51 seals the opening of the through hole 113a that connects to the outside inside the first sealing cover 51, so as to provide a first-level seal for the through hole 113a.

[0064] The second sealing cap 52 is fitted onto the first sealing cap 51 and is sealed to the first wall 113. The second sealing cap 52 provides a second level of seal for the through hole 113a. Thus, external air, water, and other impurities must pass through the seals between the second sealing cap 52 and the first wall 113, and between the first sealing cap 51 and the first wall 113, before entering the receiving cavity 11a. Similarly, gas and other substances within the receiving cavity 11a must pass through the sealed connections between the first sealing cap 51 and the first wall 113, and between the second sealing cap 52 and the first wall 113, before exiting the receiving cavity 11a.

[0065] Therefore, the first sealing cover 51 and the second sealing cover 52 together form a continuous two-stage seal for the through hole 113a. After the fuse 40 is replaced, the first sealing cover 51 and the second sealing cover 52 are respectively engaged with the first wall 113 to complete the sealing of the enclosure 11. Because of the two-stage seal, even if one of the seals fails, the other can still provide a good sealing effect. The sealing level of the enclosure 11 is very high. After the fuse 40 is replaced, there is no need to perform a sealing test on the enclosure 11, thus reducing the operational complexity of replacing the fuse 40.

[0066] In addition, since the fuse 40 and the battery cell 30 are housed together in the accommodating cavity 11a, the temperature rise of the fuse 40 can diffuse throughout the accommodating cavity 11a and be transmitted to the outside of the accommodating cavity 11a through components such as the housing 11, which helps to reduce the temperature rise of the fuse 40 and improve the working reliability of the fuse 40.

[0067] Therefore, the battery 10 provided in this application embodiment, by setting a first sealing cover 51 and a second sealing cover 52 to be sealed and connected to the first wall 113 respectively, and both of them covering the through hole 113a, is beneficial to improving the sealing performance of the through hole 113a of the housing 11. After the battery management system 60 triggers the fuse 40 to blow, during the process of replacing the fuse 40, after the first sealing cover 51 and the second sealing cover 52 are sealed to the first wall 113 respectively, the process of sealing test of the housing 11 can be omitted. While improving the sealing performance of the housing 11, it is also beneficial to simplify the process of replacing the fuse 40 after the fuse 40 blows frequently, and improve the efficiency of replacing the fuse 40.

[0068] Please see Figure 7 In some embodiments, the first control signal includes a thermal runaway signal. The battery management system 60 includes a detection unit 61 and a control unit 62. The detection unit 61 is electrically connected to the battery cell 30, and the control unit 62 is electrically connected to the detection unit 61 and the fuse 40. The detection unit 61 is used to detect at least one of the temperature, voltage, and air pressure of the battery cell 30. The detection unit 61 is configured to send a thermal runaway signal to the control unit 62 when the temperature of the battery cell 30 exceeds a temperature threshold, the voltage exceeds a voltage threshold, or the air pressure exceeds a pressure threshold, so that the control unit 62 sends a fuse-breaking signal to the fuse 40.

[0069] The detection unit 61 is used to detect at least one of the temperature, voltage, and air pressure of the battery cell 30. The detection unit 61 may include a temperature sensor, a voltage sensor, an air pressure sensor, or other devices capable of detecting at least one of the temperature, voltage, and air pressure of the battery cell 30. Based on the detected temperature, voltage, or air pressure information, the detection unit 61 can determine whether any battery cell 30 has problems such as high temperature, overcurrent, or thermal runaway. If any battery cell 30 has any of these problems, it sends a thermal runaway signal to the control unit 62, so that the control unit 62 sends a fuse signal to the fuse 40 to control the fuse 40 to blow, thereby timely cutting off the high voltage circuit inside the battery 10 and reducing the further spread or development of high temperature, high voltage, or thermal runaway in the battery cell 30.

[0070] It is understandable that when the temperature of the battery cell 30 exceeds the temperature threshold, or the voltage exceeds the voltage threshold, or the air pressure exceeds the air pressure threshold, that is, when any of the temperature, voltage and air pressure of the battery cell 30 exceeds the corresponding threshold, the detection unit 61 will send a thermal runaway signal to the control unit 62 to control the fuse 40 to blow in time.

[0071] The first control signal includes a thermal runaway signal. When there is a risk of thermal runaway in the battery cell 30, the battery management system 60 promptly sends a fuse signal to the fuse 40. The fuse 40 blows, disconnecting the high-voltage circuit inside the battery 10 and preventing the thermal runaway of the battery cell 30 from continuing to spread.

[0072] Please continue reading. Figure 7 In some embodiments, the first control signal includes a short-circuit signal. The battery management system 60 includes a control unit 62 and a detection circuit 63. The detection circuit 63 is electrically connected to the battery cell 30, and the control unit 62 is electrically connected to the detection circuit 63 and a fuse 40. The detection circuit 63 is configured to send a short-circuit signal to the control unit 62 when the current of the battery 10 exceeds a current threshold, so that the control unit 62 sends a fuse-breaking signal to the fuse 40.

[0073] The detection circuit 63 can be located at a point in the high-voltage circuit of the battery 10 that is prone to short circuits. For example, the detection circuit 63 can be connected in parallel with an internal electrical component of the battery 10. When a short circuit occurs in the corresponding component, the current of the detection circuit 63 will change. A current threshold for the detection circuit 63 is set based on its normal operating current. When the current of the detection circuit 63 exceeds the current threshold, a short circuit in the relevant component can be determined. The detection circuit 63 then sends a short-circuit signal to the control unit 62 of the battery management system 60, causing the control unit 62 to send a fuse signal to the fuse 40. This disconnects the high-voltage circuit inside the battery 10, reducing the risk of internal thermal runaway caused by a short circuit within the battery 10.

[0074] In some embodiments, the battery 10 includes a relay, and the detection circuit 63 is connected in parallel with the relay.

[0075] During the operation of battery 10, a large current will flow through the relay, and the relay is prone to sticking and short circuit. Once the relay sticks and short circuits, if a large current continues to flow through the relay, it is easy to cause the local temperature of the relay to rise too high and spread to the battery cells 30 and other structures inside battery 10. This can easily lead to thermal runaway and other accidents inside battery 10.

[0076] Therefore, the detection circuit 63 is connected in parallel with the relay. When the relay sticks or short-circuits, the detection circuit 63 can detect the abnormal current and send a short-circuit signal to the control unit 62, so that the control unit 62 sends a fuse signal to the fuse 40 to disconnect the high-voltage circuit inside the battery 10 in time, thereby reducing the risk of thermal runaway inside the battery 10 caused by the relay sticking and short-circuiting.

[0077] Please continue reading. Figure 7 In some embodiments, the first control signal includes an overcurrent signal. The battery 10 includes a power distribution unit 70 electrically connected to the battery cell 30 and the battery management system 60. The power distribution unit 70 is configured to detect the charging current of the battery 10 and, when the charging current exceeds a first threshold, send an overcurrent signal to the battery management system 60, causing the battery management system 60 to send a fuse-breaking signal to the fuse 40.

[0078] The first threshold can be the maximum value of the charging current set according to the change of current during the normal charging process of battery 10. If the charging current of battery 10 is greater than the first threshold, or if the charging current is greater than the first threshold and continues for a certain period of time, it can be considered that there is a charging abnormality problem in battery 10, and the high voltage circuit inside battery 10 can be cut off immediately to stop charging battery 10.

[0079] Optionally, the power distribution unit 70 may immediately send an overcurrent signal to the battery management system 60 when it detects that the charging current of the battery 10 is greater than the first threshold, or send an overcurrent signal to the battery management system 60 after detecting that the charging current of the battery 10 is greater than the first threshold and continues for a certain period of time, so as to reduce the possibility of unnecessary fuse blowout of the fuse 40.

[0080] The power distribution unit 70 is electrically connected to the battery cell 30 and is used to electrically connect external electrical devices to the battery 10. For example, when the battery 10 is applied to the vehicle 1, the power distribution unit can be electrically connected to the motor, etc., to convert the voltage or current of the battery 10 into a voltage or current that can be directly used by the motor.

[0081] During the charging process of battery 10, battery cell 30 is electrically connected to the charging power supply through the distribution unit. If the charging current of battery 10 is too large, it will pose a certain safety risk to battery 10. By setting the power distribution unit 70 to detect the charging current of battery 10, and when the charging current is greater than the first threshold, an overcurrent signal is sent to the battery management system 60, so that the battery management system 60 sends a fuse signal to the fuse 40.

[0082] The power distribution unit 70 is electrically connected to the battery management system 60 so that when the battery 10 experiences excessive charging current, it sends an overcurrent signal to the battery management system 60. Upon receiving the overcurrent signal from the power distribution unit 70, the battery management system 60 sends a fuse signal to the fuse 40 to promptly cut off the high-voltage circuit inside the battery 10, thereby stopping the charging of the battery 10 and reducing the possibility of safety risks caused by excessive charging current.

[0083] The vehicle 1 provided according to the embodiments of this application includes the battery 10 provided in any of the above embodiments, and the battery 10 is used to provide electrical energy.

[0084] The vehicle 1 provided in this application embodiment has the same technical effect as the battery 10 provided in any of the above embodiments, and will not be described again here.

[0085] like Figure 8 As shown, in some embodiments, vehicle 1 includes a control module 2, which is electrically connected to battery management system 60. A first control signal includes a vehicle out-of-control signal. Control module 2 is configured to send a vehicle out-of-control signal to battery management system 60 after receiving an abnormal operating signal from vehicle 1, so that battery management system 60 sends a fuse-breaking signal to fuse 40.

[0086] Specifically, abnormal vehicle operation signals can include brake failure, loss of steering control or abnormal steering, vehicle stalling or vehicle fire. When the control module 2 receives abnormal vehicle operation signals sent by other relevant modules of the vehicle 1 or detected by the control module 2 itself, if the battery 10 continues to supply power to the vehicle, it will cause a significant safety hazard. Therefore, when the control module 2 receives abnormal vehicle operation signals, it sends a vehicle loss of control signal to the battery management system 60 to promptly control the fuse 40 to blow.

[0087] Therefore, by setting the control module 2 to be electrically connected to the battery management system 60, once the vehicle 1 experiences an abnormal operating condition, the control module 2 sends a vehicle loss of control signal to the battery management system 60, so that the battery management system 60 can promptly control the fuse 40 to blow and cut off the power supply to the battery 10, which helps to reduce the risk of certain safety hazards to the driver and passengers caused by the abnormal operation of the vehicle 1.

[0088] like Figure 7 As shown, in some embodiments, the operational anomaly signal includes a brake failure signal. The vehicle 1 includes a braking system 3, and the control module 2 is configured to receive the brake failure signal sent by the braking system 3 in order to send a vehicle out-of-control signal to the battery management system 60.

[0089] Brake failure can specifically manifest as the vehicle 1 failing to decelerate or experiencing minimal acceleration during deceleration when the brake pedal is depressed. The braking system 3 can acquire information about the brake pedal travel and the vehicle 1's speed or acceleration. When the brake pedal travel does not match the vehicle 1's speed or acceleration information, it can be determined that the vehicle 1 has experienced brake failure. This determination can be made by the braking system 3 itself, or by the control module 2 based on the brake pedal travel and vehicle 1's speed or acceleration information transmitted from the braking system 3. Therefore, the brake failure signal can be the brake pedal travel and vehicle 1's speed or acceleration information, or it can be the result of vehicle loss of control as determined by the braking system 3.

[0090] After receiving the brake failure signal, the control module 2 sends a vehicle loss of control signal to the battery management system 60 so that the battery management system 60 can promptly control the battery 10 to blow off and disconnect the power supply provided by the battery 10 to the vehicle 1.

[0091] Therefore, the abnormal operation signal is set to include the brake failure signal, so that when the brake failure occurs, the control module 2 can obtain the brake failure signal in time and send the vehicle 1 out of control signal to the battery management system 60, so that the battery management system 60 can be blown in time, which helps to reduce the safety hazards caused by the vehicle out of control.

[0092] Please continue reading. Figure 8In some embodiments, the abnormal operation signal includes a fire signal. The vehicle 1 includes a fire detection module 4, which is electrically connected to the control module 2. The control module 2 is configured to receive the fire signal sent by the fire detection module 4 in order to send a vehicle out-of-control signal to the battery management system 60.

[0093] In the event of high continuous mileage or a collision, local components of vehicle 1 may catch fire. The fire detection module 4 can detect whether vehicle 1 is on fire in real time. When vehicle 1 catches fire, the fire detection module 4 sends a fire signal to the control module 2. Upon receiving the fire signal, the control module 2 sends a vehicle 1 loss-of-control signal to the battery management system 60. Alternatively, the fire detection module 4 can monitor local temperature, air pressure, and other information of vehicle 1 in real time to determine whether vehicle 1 is on fire, and transmit this information to the control module 2. The control module 2 then determines whether vehicle 1 is on fire and sends a vehicle fire signal. After receiving the vehicle fire signal, the control module 2 sends a vehicle loss-of-control signal to the battery management system 60.

[0094] After receiving the vehicle out of control signal, the battery management system 60 sends a fuse signal to the fuse 40 to control the high-voltage circuit of the battery 10 to disconnect.

[0095] Therefore, the weighing system includes a fire detection module 4, which facilitates real-time monitoring of whether there is a risk of fire in vehicle 1. This allows for timely control of the fuse 40 to blow and disconnect the high-voltage circuit of battery 10 when or before a fire starts in vehicle 1, thereby reducing the risk of the fire spreading or developing further in vehicle 1.

[0096] Please continue reading. Figure 8 In some embodiments, vehicle 1 includes an airbag control module 5 electrically connected to a battery management system 60. A first control signal includes a collision signal, and the airbag control module 5 is configured to send the collision signal to the battery management system 60, causing the battery management system 60 to send a fuse-breaking signal to the fuse 40.

[0097] Specifically, the airbag control module 5 can detect information such as the acceleration or speed of the vehicle 1 to determine whether the vehicle 1 has been involved in a collision. After the airbag control module 5 detects a collision signal of the vehicle 1, it sends a collision signal to the battery management system 60, so that the battery management system 60 sends a fuse signal to the fuse 40, so that the fuse 40 blows in time.

[0098] Understandably, the airbag control module 5 can determine the severity of a collision involving vehicle 1 based on the detected speed or acceleration of vehicle 1, and may only send a collision signal to the battery management system 60 if a relatively severe collision occurs. Alternatively, after receiving a collision signal, the battery management system 60, in conjunction with the current status of battery 10, may only send a fuse-breaking signal to fuse 40 if a collision occurs with vehicle 1 and the current of battery 10 is abnormal, thereby reducing the possibility of unnecessary fuse-breaking.

[0099] Therefore, the airbag control module 5 is configured to send a collision signal to the battery management system 60 when the vehicle 1 is involved in a collision, so that when the vehicle 1 is involved in a collision, the battery management system 60 can control the fuse 40 to blow if necessary, based on the operating conditions of the vehicle 1 at that time, so as to reduce the damage caused by the collision of the vehicle 1.

[0100] In some embodiments, vehicle 1 further includes an acceleration sensor electrically connected to airbag control module 5. The acceleration sensor detects the acceleration of vehicle 1 and transmits it to airbag control module 5, which is configured to send a collision signal to battery management system 60 when the acceleration of vehicle 1 exceeds an acceleration threshold.

[0101] The acceleration sensor detects the acceleration of vehicle 1 and determines the severity of a collision based on the magnitude of the acceleration. If the acceleration of vehicle 1 exceeds the acceleration threshold, it indicates a severe collision, and a collision signal is sent to the battery management system 60 to control the fuse 40 to blow in a timely manner. If the acceleration of vehicle 1 does not exceed the acceleration threshold, even if a collision has occurred, it can be considered minor, and it is not necessary to disconnect the high-voltage circuit inside the battery 10.

[0102] Optionally, the airbag control module 5 can be electrically connected to the battery management system 60 via the control module 2 of the vehicle 1, so as to send a collision signal to the battery management module 10 through the control module 2. Alternatively, the airbag control module 5 can be directly connected to the battery management system 60 and send a collision signal directly to the battery management system 60. The choice can be made according to actual needs, and no restrictions are imposed here.

[0103] Therefore, by setting an acceleration sensor and setting the airbag control module 5 to send a collision signal to the battery management system 60 after the acceleration of vehicle 1 exceeds the acceleration threshold, the airbag control module 5 can control the fuse 40 to blow. This can blow the fuse 40 in the event of a more serious collision with vehicle 1, while the fuse 40 will not blow in the event of a less serious collision with vehicle 1, thus reducing the possibility of inconvenience caused by frequent replacement of the fuse 40.

[0104] Please continue reading. Figure 8 In some embodiments, the vehicle 1 further includes an airbag 6, which is electrically connected to the airbag control module 5. The airbag 6 is configured to send an airbag 6 deployment signal to the airbag control module 5 when it deploys, and the airbag 6 is configured to send a collision signal to the battery management system 60 when it receives both the airbag 6 deployment signal and a collision signal.

[0105] In other words, after a collision, vehicle 1 will only send a collision signal to the battery management system 60 to control the fuse 40 to blow if the airbag 6 deploys. This further reduces the risk of frequent fuse 40 blown.

[0106] The vehicle 1 provided according to the embodiments of this application includes the battery 10 provided in any of the above embodiments, and the battery 10 is used to provide electrical energy.

[0107] The vehicle 1 provided in this application embodiment has the same technical effect as the battery 10 provided in any of the above embodiments, and will not be described again here.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that, include: The housing has a first wall and a receiving cavity, the first wall having a through hole that connects the receiving cavity and the outside of the housing; A single battery cell is housed within the accommodating cavity; A fuse is disposed within the accommodating cavity and connected to the first wall, and the fuse is electrically connected to the battery cell. A first sealing cap is provided on the first wall corresponding to the through hole, and is used to cover and seal the opening of the through hole that connects to the outside. The second sealing cover is sealed to the first wall, and the second sealing cover is sleeved on the first sealing cover; A battery management system is electrically connected to the individual battery cells within the accommodating cavity and to the fuse. The battery management system is configured to acquire a first control signal and send a fuse-breaking signal to the fuse to control the fuse to blow.

2. The battery according to claim 1, characterized in that, The first control signal includes a thermal runaway signal. The battery management system includes a detection unit and a control unit. The detection unit is electrically connected to the battery cell, and the control unit is electrically connected to the detection unit and the fuse. The detection unit is used to detect at least one of the temperature, voltage, and air pressure of the battery cell. The detection unit is configured to send the thermal runaway signal to the control unit when the temperature of the battery cell exceeds a temperature threshold, the voltage exceeds a voltage threshold, or the air pressure exceeds an air pressure threshold, so that the control unit sends the fuse signal to the fuse.

3. The battery according to claim 1, characterized in that, The first control signal includes a short-circuit signal. The battery management system includes a control unit and a detection circuit. The detection circuit is electrically connected to the battery cell, and the control unit is electrically connected to the detection circuit and the fuse. The detection circuit is configured to send the short-circuit signal to the control unit when the current exceeds the current threshold, so that the control unit sends the fuse signal to the fuse.

4. The battery according to claim 3, characterized in that, The battery includes a relay, and the detection circuit is connected in parallel with the relay.

5. The battery according to claim 1, characterized in that, The first control signal includes an overcurrent signal, and the battery includes a power distribution unit, which is electrically connected to the individual battery cells and to the battery management system. The power distribution unit is configured to detect the charging current of the battery and, when the charging current exceeds a first threshold, send the overcurrent signal to the battery management system so that the battery management system sends the fuse trip signal to the fuse.

6. A vehicle, characterized in that, Includes the battery as described in any one of claims 1 to 5, the battery being used to provide electrical energy.

7. The vehicle according to claim 6, characterized in that, The vehicle includes a control module electrically connected to the battery management system; the first control signal includes a vehicle out-of-control signal, and the control module is configured to send the vehicle out-of-control signal to the battery management system after receiving an abnormal operation signal of the vehicle, so that the battery management system sends the fuse signal to the fuse.

8. The vehicle according to claim 7, characterized in that, The abnormal operation signal includes a brake failure signal. The vehicle includes a braking system. The control module is configured to receive the brake failure signal sent by the braking system in order to send the vehicle out of control signal to the battery management system.

9. The vehicle according to claim 7, characterized in that, The abnormal operation signal includes a fire signal. The vehicle includes a fire detection module, which is electrically connected to the control module. The control module is configured to receive the fire signal sent by the fire detection module in order to send a vehicle out-of-control signal to the battery management system.

10. The vehicle according to claim 6, characterized in that, The vehicle includes an airbag control module, which is electrically connected to the battery management system. The first control signal includes a collision signal, and the airbag control module is configured to send the collision signal to the battery management system so that the battery management system sends the fuse signal to the fuse.

11. The vehicle according to claim 10, characterized in that, The vehicle also includes an acceleration sensor, which is electrically connected to the airbag control module; The acceleration sensor is used to detect the acceleration of the vehicle and transmit it to the airbag control module. The airbag control module is configured to send the collision signal to the battery management system when the acceleration of the vehicle exceeds the acceleration threshold.

12. The vehicle according to claim 10, characterized in that, The vehicle also includes an airbag, which is electrically connected to the airbag control module. The airbag is configured to send an airbag deployment signal to the airbag control module when it deploys, and the airbag is configured to send the collision signal to the battery management system when it receives the airbag deployment signal and the collision signal.

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