Battery pack and vehicle

Abstract

The utility model discloses a battery pack and a vehicle, and belongs to the technical field of power batteries. The battery pack comprises a shell, a battery cell module and a power distribution module, the battery cell module is arranged in a first containing space, the power distribution module is arranged in a second containing space, the power distribution module comprises a plurality of electrical protection devices, and the electrical protection devices are divided into a first electrical protection device and a second electrical protection device. The first electrical protection device is connected with the battery cell module, the first electrical protection device is used for protecting the battery cell module, the second electrical protection device is arranged on a loop where the battery cell module is connected with the high-voltage component, and the second electrical protection device is used for protecting the high-voltage component. According to the battery pack, the electrical protection device is integrated in the power distribution module, and the power distribution module and the battery cell module are respectively arranged in the two isolated accommodating spaces, so that the electrical protection device can be conveniently selected, matched, replaced and maintained, the safety and the maintenance convenience of the battery pack can be improved, and the platformization of a vehicle is facilitated.

Description

Technical Field

[0001] The present application belongs to the field of power battery technology, and in particular relates to a battery pack and a vehicle. Background Art

[0002] With the global shortage of oil resources and the need for environmental protection, as well as the increasing awareness of human beings about environmental protection, new energy vehicles have obvious advantages in alleviating the energy crisis and promoting the harmonious development of humans and the environment, and have become an important trend in the development of modern vehicles.

[0003] In the new energy vehicle industry, the power battery pack, which serves as the vehicle's power source, is a key technology in the development of pure electric vehicles. The safety and ease of maintenance of the battery pack are also of great concern. To ensure the safety of the battery pack and other high-voltage components of the vehicle, protective devices such as circuit breakers, fuses, and relays are typically installed. The number of protective devices required for the entire vehicle is large, and the wiring is complex. In practice, frequent disassembly of the battery pack for repairs or component replacement may be necessary, making maintenance difficult and posing a high safety risk. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a battery pack and a vehicle that can improve the safety and maintenance convenience of the battery pack.

[0005] In a first aspect, the present application provides a battery pack, comprising:

[0006] a housing defining a first accommodating space and a second accommodating space that are isolated from each other;

[0007] A battery cell module, the battery cell module being disposed in the first accommodation space;

[0008] The power distribution module is arranged in the second accommodation space, and the power distribution module includes multiple electrical protection devices. The multiple electrical protection devices are divided into a first electrical protection device and a second electrical protection device. The first electrical protection device is connected to the battery module, and the first electrical protection device is used to protect the battery module. The second electrical protection device is arranged on the circuit connecting the battery module and the high-voltage component, and the second electrical protection device is used to protect the high-voltage component.

[0009] According to the battery pack of the present application, by integrating the electrical protection device into the power distribution module, the power distribution module and the battery cell module are respectively arranged in two isolated accommodation spaces, which facilitates the selection, matching, replacement and maintenance of the electrical protection device, can improve the safety and maintenance convenience of the battery pack, and is conducive to vehicle platformization.

[0010] According to one embodiment of the present application, the first electrical protection device includes a first relay, a first fuse and a pre-charging protection device connected to the battery cell module, and the pre-charging protection device includes a pre-charging resistor and a pre-charging relay connected in series.

[0011] According to one embodiment of the present application, it further includes:

[0012] A battery management system is disposed in the first accommodation space and is connected to the battery cell module.

[0013] According to one embodiment of the present application, the electrical protection device is a relay, which includes a high-voltage switching circuit and a low-voltage control circuit. The high-voltage switching circuit is connected to the battery cell module, and the low-voltage control circuit is connected to the battery management system. The battery management system is used to control the on and off of the relay.

[0014] According to one embodiment of the present application, the low-voltage control circuit is connected to the battery management system via a control cable.

[0015] According to one embodiment of the present application, a temperature control switch is provided on the loop formed by connecting the low-voltage control circuit and the battery management system. The temperature control switch is used to detect the temperature of the relay. When the temperature of the relay is greater than the temperature threshold, the temperature control switch is disconnected to disconnect the relay.

[0016] According to one embodiment of the present application, the shell is provided with an isolation structure, which defines the first accommodating space and the second accommodating space in the shell. The isolation structure is provided with a copper busbar connection structure, and the battery cell module and the electrical protection device are connected through the copper busbar connection structure.

[0017] According to one embodiment of the present application, a maintenance port is provided at a position on the shell corresponding to the second accommodation space.

[0018] According to one embodiment of the present application, the battery pack further includes a voltage acquisition device, voltage sampling points are provided at both ends of the electrical protection device, the voltage acquisition device is connected to the voltage sampling points, and the voltage information collected by the voltage acquisition device is used to determine whether the electrical protection device is adhered.

[0019] In a second aspect, the present application provides a vehicle, comprising:

[0020] The battery pack according to the first aspect;

[0021] At least one high-voltage component is connected to the battery pack.

[0022] According to the vehicle of the present application, by integrating the electrical protection device into the power distribution module, the power distribution module and the battery cell module are respectively arranged in two isolated accommodation spaces, which facilitates the selection, matching, replacement and maintenance of the electrical protection device, can improve the safety and maintenance convenience of the battery pack, and is conducive to the platformization of the vehicle.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 This is one of the structural diagrams of the battery pack provided in the embodiment of the present application;

[0026] Figure 2 This is the second structural diagram of the battery pack provided in the embodiment of the present application;

[0027] Figure 3 This is the third structural diagram of the battery pack provided in the embodiment of the present application.

[0028] Reference numerals:

[0029] Battery pack 100, battery cell module 110, power distribution module 120, battery management system 130,

[0030] On-board charger 210 , AC charging port 211 , electric drive system 220 , electric compressor 231 , high-voltage liquid heater 232 , DC charging port 240 . DETAILED DESCRIPTION

[0031] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0032] Reference below Figure 1-Figure 3 A battery pack 100 and a vehicle including the battery pack 100 according to an embodiment of the present application are described.

[0033] like Figure 1 As shown, the battery pack 100 of the embodiment of the present application includes a shell, a battery cell module 110 and a power distribution module 120.

[0034] The shell defines an isolated first accommodation space and a second accommodation space. The battery cell module 110 is disposed in the first accommodation space, and the power distribution module 120 is disposed in the second accommodation space.

[0035] The battery cell module 110 may be a modular component formed by combining multiple battery cells in series or in parallel. Connecting multiple battery cells into a whole provides the vehicle with greater power storage capacity and output power.

[0036] The battery cell module 110 is disposed in the first accommodation space of the housing. The housing provides physical support and isolation for the battery cell module 110 , protects the battery cells, and ensures overall structural stability and safety of the battery cell module 110 .

[0037] The power distribution module 120 includes a plurality of electrical protection devices, which are devices that play a protective role in the electrical system and are used to ensure the safety of electrical equipment and personnel.

[0038] Electrical protection devices can detect abnormal conditions in electrical systems, such as overvoltage, overcurrent, short circuit, etc., and protect the system from damage by controlling switches or cutting off power.

[0039] In this embodiment, the electrical protection device of the power distribution module 120 may be a circuit breaker, a fuse, a relay, or other device that implements electrical protection.

[0040] It can be understood that there are isolated first and second accommodating spaces in the shell, and the size and shape of the two accommodating spaces can be adjusted according to the size and shape of the battery cell module 110 and the distribution module 120. The two accommodating spaces can be independently sealed by a sealing device (sealing strip, foam glue).

[0041] The battery cell module 110 is arranged in the first accommodation space of the shell, and the distribution module 120 is arranged in the second accommodation space of the shell. The two accommodation spaces are isolated. When the battery cell module 110 is inspected, repaired or replaced, it will not affect the electrical protection devices such as circuit breakers, fuses, relays, etc. in the second accommodation space. When the electrical protection devices of the distribution module 120 are inspected, repaired or replaced, it will not affect the battery cell module 110 in the first accommodation space.

[0042] In this embodiment, the plurality of electrical protection devices of the power distribution module 120 are divided into a first electrical protection device and a second electrical protection device.

[0043] Among them, the first electrical protection device is connected to the battery module 110, and the first electrical protection device is used to protect the battery module 110. The second electrical protection device is arranged on the circuit connecting the battery module 110 and the high-voltage component, and the second electrical protection device is used to protect the high-voltage component.

[0044] It should be noted that the power distribution module 120 can integrate all the electrical protection devices of the vehicle, including a first electrical protection device for protecting the battery module 110 and a second electrical protection device for protecting high-voltage components such as the on-board charger 210, the electric drive system 220, and the electric compressor 231.

[0045] It is understandable that the design of electrical protection devices on vehicles requires reasonable selection and matching. Under the same specifications, the technical parameters of electrical protection devices such as relays and fuses of different brands vary greatly. Integrating all electrical protection devices in a distribution module 120 can achieve unified selection and matching. After the electrical parameters of subsequent vehicle models are adjusted, only the electrical protection devices in the distribution module 120 need to be re-matched and replaced, which is conducive to the application of vehicle platform solutions.

[0046] In related technologies, protection devices such as the main fuse, main relay and pre-charge module are integrated into the power battery pack. When the protection device fails and needs to be replaced, the battery pack often needs to be unpacked (involving the disassembly of the battery cell installation position), which makes maintenance difficult and has high safety risks. At the same time, the protection devices at the high-voltage load end are distributed in different high-voltage modules. The number of protection devices is large and the wiring is complicated, which is not conducive to equipment selection and platform application.

[0047] In the embodiment of the present application, the vehicle's electrical protection devices are all integrated into the distribution module 120 and arranged in the second storage space, which facilitates the selection, matching, replacement and maintenance of the electrical protection devices. Only the second storage space needs to be operated, and the battery module 110 in the first storage space will not be disassembled, which effectively reduces the difficulty of maintenance and safety risks, and the wiring is also simpler. At the same time, if the model of some electrical protection devices needs to be adjusted, only the distribution module 120 in the second storage space needs to be adjusted, which will not affect the battery module 110 in the first storage space. It can also ensure the continued use of other high-voltage components of the vehicle, which is conducive to vehicle platformization.

[0048] According to the battery pack 100 provided in the embodiment of the present application, by integrating the electrical protection device into the distribution module 120, the distribution module 120 and the battery cell module 110 are respectively arranged in two isolated accommodation spaces, which facilitates the selection, matching, replacement and maintenance of the electrical protection device, can improve the safety and maintenance convenience of the battery pack 100, and is conducive to vehicle platformization.

[0049] In some embodiments, the first electrical protection device includes a first relay connected to the battery cell module 110, a first fuse, and a pre-charge protection device, and the pre-charge protection device includes a pre-charge resistor and a pre-charge relay connected in series.

[0050] Among them, the first relay is the main relay of the battery pack 100, which realizes the power transmission between the battery pack 100 and the vehicle circuit system. There can be two first relays, one is the main positive relay, and the other is the main negative relay.

[0051] The first fuse is a main fuse (also called a main fuse) of the battery pack 100 , which is used to cut off the current when an overload or short circuit occurs in the circuit between the battery pack 100 and the vehicle circuit system.

[0052] In this embodiment, the first relay and the first fuse can be arranged in the circuit between the battery module 110 and various high-voltage components of the vehicle, and the pre-charging protection device is connected in parallel with the first relay, and the pre-charging protection device includes a pre-charging resistor and a pre-charging relay connected in series.

[0053] When the pre-charge relay is closed, a small current is allowed to pass through the pre-charge resistor to balance the voltage between the charging device (e.g., charging device) and the battery cell module 110 of the battery pack 100, which helps to reduce the current shock caused by the voltage difference and avoid damage to the main relay due to overcurrent and overheating.

[0054] like Figure 1 As shown, the first relay K1, the first relay K2 and the first fuse F1 are arranged in the circuit between the battery module 110 and the various high-voltage components of the vehicle. The pre-charging protection device includes a pre-charging relay K3 and a pre-charging resistor R1 connected in series. The pre-charging protection device is connected in parallel with the first relay. The power distribution from the battery module 110 to the various high-voltage components of the vehicle is realized through the first electrical protection devices such as K1, K2, F1, K3, etc., to protect the safety of the battery module 110.

[0055] In this embodiment, when the first relay, the first fuse and the pre-charge protection device are repaired or replaced, the battery cell module 110 will not be affected, and there is no need to disassemble the battery cell module 110 or the shell around the battery cell module 110.

[0056] It can be understood that the first electrical protection device can be regarded as an electrical protection device on the main circuit from the battery module 110 to the various high-voltage components of the vehicle, and the second electrical protection device can be regarded as an electrical protection device on the branch circuit from the battery module 110 to the various high-voltage components of the vehicle.

[0057] For example, the high-voltage components of the vehicle may include an onboard charger 210 , an electric drive system 220 , an electric compressor 231 , a high-voltage liquid heater 232 , a DC charging port 240 , and the like.

[0058] like Figure 1As shown, the second electrical protection device corresponding to the circuit branch where the on-board charger 210 is located is fuse F2, the second electrical protection device corresponding to the circuit branch where the electric compressor 231 is located is fuse F3, the second electrical protection device corresponding to the circuit branch where the high-voltage liquid heater 232 is located is fuse F4, and the second electrical protection device corresponding to the circuit branch where the DC charging port 240 is located is relays K4 and K5.

[0059] In some embodiments, the battery pack 100 further includes a battery management system 130 (BMS), which has functions such as monitoring battery charging and discharging, battery temperature management, fault detection and diagnosis, life prediction and health management.

[0060] In this embodiment, the battery management system 130 is disposed in the first accommodation space, and the battery management system 130 is connected to the battery cell module 110 .

[0061] It should be noted that the battery cell module 110 includes multiple battery cells. The battery cell is the basic unit of the module and is responsible for storing and releasing electrical energy. The battery management system 130 and the battery cell module 110 can be combined and packaged as a whole. The battery management system 130 is responsible for monitoring and managing the battery cell charging and discharging process to ensure the safety and stable performance of the battery cells in the battery cell module 110.

[0062] In some embodiments, the electrical protection device is a relay, which includes a high-voltage switching circuit and a low-voltage control circuit. The high-voltage switching circuit is connected to the battery cell module 110, and the low-voltage control circuit is connected to the battery management system 130. The battery management system 130 is used to control the on and off of the relay.

[0063] A relay is an electrically controlled electrical protection device that can control the on and off of a high-voltage switching circuit through a low-voltage control circuit. The high-voltage switching circuit serves to connect the circuits between the battery module 110 and various high-voltage components of the vehicle. The low-voltage control circuit is connected to the battery management system 130, and the on and off status of each relay in the vehicle is controlled by the battery management system 130.

[0064] It should be noted that, for the electrical protection devices in the distribution module 120 that are relays or other electrically controllable devices, they can be connected to the battery management system 130, and the battery management system 130 can perform on-off control to protect the battery cell module 110 and high-voltage components; for the electrical protection devices in the distribution module 120 that are fuses or other electrical protection devices that are not electrically controlled, they are not connected to the battery management system 130, nor to other control modules of the vehicle.

[0065] For example, Figure 2As shown, the power distribution module 120 includes a first relay K1 , a first relay K2 , a pre-charging relay K3 , and relays K4 and K5 corresponding to the DC charging port 240 .

[0066] The battery management system 130 is connected to the low-voltage control circuits of K1, K2, K3, K4 and K5. The battery management system 130 can control the on-off state of the high-voltage switching circuit through the low-voltage control circuit (for example, using electromagnetic effects to control the mechanical contacts to achieve on-off), thereby realizing on-off control of each relay and protecting the safety of the battery cell module 110 and high-voltage components.

[0067] In some embodiments, the low voltage control circuit is connected to the battery management system 130 via a control cable.

[0068] Among them, control cables are low-voltage cables that transmit power or signal current and signal voltage.

[0069] In this embodiment, the power distribution module 120 is arranged in the second accommodation space, and the battery management system 130 is arranged in the first accommodation space. The two accommodation spaces are isolated. The battery management system 130 and the low-voltage control circuit of the relay are connected by a control cable, so that the battery management system 130 can supply power to the relay. The control cable wiring is convenient and the operation is reliable.

[0070] In some embodiments, a temperature control switch is provided on the loop formed by connecting the low-voltage control circuit and the battery management system 130 .

[0071] Among them, the temperature control switch is an automatic control element that switches on or off according to the temperature changes in the working environment.

[0072] In this embodiment, the temperature control switch is used to detect the temperature of the relay. When the temperature of the relay is greater than a temperature threshold, the temperature control switch is disconnected to disconnect the relay.

[0073] For example, Figure 2 As shown, the power distribution module 120 includes a first relay K1 , a first relay K2 , a pre-charging relay K3 , and relays K4 and K5 corresponding to the DC charging port 240 .

[0074] The battery management system 130 is connected to the low-voltage control circuit of K1, K2, K3, K4 and K5, and the temperature control switches T1, T2, T3, T4 and T5 are respectively set on the loop connecting K1, K2, K3, K4 and K5 and the battery management system 130.

[0075] In this embodiment, the relay integrates a temperature monitoring function. If the temperature of the relay exceeds the tolerable temperature threshold, the temperature control switch in the loop formed by the low-voltage control circuit and the battery management system 130 is disconnected, cutting off the relay, thereby preventing the vehicle from experiencing heat damage.

[0076] It is understandable that different relays have different temperature tolerance performance. The selection of temperature control switches can refer to the temperature rise curve of the relay.

[0077] For example, the safe temperature rise of a 250A relay is 180 degrees Celsius. If the safe temperature rise is exceeded, the relay may be at risk of thermal damage. The temperature control switch connected in series in the control circuit of this relay has a selection specification of 180 degrees Celsius.

[0078] In actual implementation, the temperature control switch can be arranged on the housing of the relay. If it is restricted and cannot be arranged on the housing of the relay, the temperature control switch can be arranged above, to the side of the relay, or in a position close to the relay.

[0079] In some embodiments, the shell is provided with an isolation structure, which defines a first accommodation space and a second accommodation space in the shell. The isolation structure is provided with a copper busbar connection structure, and the battery module 110 and the electrical protection device are connected through the copper busbar connection structure.

[0080] The copper busbar connection structure can be a copper plate structure used for electrical conduction. It has the characteristics of good electrical conductivity, good thermal conductivity, high mechanical strength, and good corrosion resistance. It can be cut, punched, welded and other processing operations as needed to adapt to different connection scenarios.

[0081] In this embodiment, the space inside the shell is separated into a first accommodation space and a second accommodation space by an isolation structure. The battery cell module 110 and the battery management system 130 are arranged in the first accommodation space, and the distribution module 120 is arranged in the second accommodation space. The battery cell module 110 and the electrical protection device are connected through a copper busbar connection structure. The isolation structure can also be provided with a sealing device to achieve independent sealing of the two accommodation spaces.

[0082] It should be noted that the battery module 110 and the electrical protection device are connected through a copper busbar connection structure, rather than through a high-voltage wiring harness, which can prevent thermal damage caused by a short circuit in the high-voltage wiring harness.

[0083] In actual implementation, the battery pack 100 has two independently isolated storage spaces. The isolation structure between the first storage space and the second storage space is reserved with channels for the copper busbar connection structure and the control cable. After the copper busbar connection structure and the control cable are assembled, the channels on the isolation structure are sealed. When repairing or replacing the electrical protection device, only the second storage space needs to be operated.

[0084] In some embodiments, a maintenance port is provided at a position corresponding to the second accommodation space on the housing.

[0085] In this embodiment, the maintenance port is an opening for repairing or replacing an electrical protection device in the power distribution module 120 .

[0086] In actual implementation, an openable cover can be provided at the maintenance port. Closing the cover can prevent dust, water vapor, etc. from entering the power distribution module 120 . Opening the cover can repair or replace the power distribution module 120 .

[0087] In the related art, the protection devices at the high-voltage load end are distributed in different high-voltage modules, and each protection device needs to be provided with an opening and other structures for later maintenance, which increases the cost of the entire vehicle and the difficulty of layout, and makes maintenance difficult.

[0088] In the embodiment of the present application, the vehicle's electrical protection devices are integrated into the distribution module 120 and are arranged in the second accommodation space. The electrical protection devices can be replaced or repaired through the maintenance port on the shell, effectively reducing the cost and layout difficulty of the entire vehicle and simplifying maintenance.

[0089] In some embodiments, the battery pack 100 further includes a voltage acquisition device. Voltage sampling points are provided at both ends of the electrical protection device. The voltage acquisition device is connected to the voltage sampling points. The voltage information collected by the voltage acquisition device is used to determine whether the electrical protection device is adhered.

[0090] In this embodiment, voltage collection points are designed at both ends of the electrical protection device. By comparing the voltage difference at both ends of the electrical protection device, it can be determined whether adhesion occurs in the electrical protection device. Faulty electrical protection devices can be discovered in time, which helps to repair or replace the electrical protection device in time, thereby ensuring the operation safety of the battery pack 100.

[0091] In actual implementation, the electrical protection device with a voltage collection point can be a relay. The voltage information collected by the voltage collection device is used to determine whether the relay is stuck. Sticking can cause the relay to fail, resulting in loss of control or continuous power supply.

[0092] For example, Figure 1 As shown, the power distribution module 120 includes a first relay K1 , a first relay K2 , a pre-charging relay K3 , and relays K4 and K5 corresponding to the DC charging port 240 .

[0093] The voltage sampling points include C1, C2, C3, C4, and C5. C1 corresponds to the voltage sampling point set at both ends of K1, C2 corresponds to the voltage sampling point set at both ends of K2, and so on.

[0094] It should be noted that when performing relay adhesion detection, the state of the relay is first determined. If the relay state is disconnected, it is determined whether the voltage difference on both sides of the relay is less than a certain preset threshold. If it is less than the preset threshold, it is determined that the relay is in adhesion failure.

[0095] An embodiment of the present application also provides a vehicle.

[0096] The vehicle includes the battery pack 100 as described above and at least one high-voltage component connected to the battery pack 100 .

[0097] The shell of the battery pack 100 defines an isolated first accommodation space and a second accommodation space. The battery cell module 110 is disposed in the first accommodation space, and the power distribution module 120 is disposed in the second accommodation space.

[0098] The distribution module 120 includes multiple electrical protection devices, which are divided into a first electrical protection device and a second electrical protection device. The first electrical protection device is connected to the battery module 110 and is used to protect the battery module 110. The second electrical protection device is arranged on the circuit connecting the battery module 110 and the high-voltage component, and the second electrical protection device is used to protect the high-voltage component.

[0099] A specific embodiment is described below.

[0100] like Figure 3 As shown, the first electrical protection device includes a first relay K1, a first relay K2, a first fuse F1, and a pre-charge protection device composed of a pre-charge relay K3 and a pre-charge resistor R1.

[0101] The high-voltage components of the vehicle may include an on-board charger 210 , an electric drive system 220 , an electric compressor 231 , a high-voltage liquid heater 232 , a DC charging port 240 , etc. The on-board charger 210 is provided with an AC charging port 211 .

[0102] The second electrical protection device includes fuse F2 corresponding to the circuit branch where the on-board charger 210 is located, fuse F3 corresponding to the circuit branch where the electric compressor 231 is located, fuse F4 corresponding to the circuit branch where the high-voltage liquid heater 232 is located, and fuse K4 and K5 corresponding to the circuit branch where the DC charging port 240 is located.

[0103] The battery management system 130 is connected to the low-voltage control circuits of K1, K2, K3, K4 and K5. The battery management system 130 can control the on-off state of the high-voltage switch circuit through the low-voltage control circuit, realize the on-off control of each relay, and protect the safety of the battery module 110 and high-voltage components.

[0104] The battery management system 130 is connected to the low-voltage control circuit of K1, K2, K3, K4 and K5. The temperature control switches T1, T2, T3, T4 and T5 are respectively set on the circuit connecting K1, K2, K3, K4 and K5 to the battery management system 130. The on-off control of each relay can also be achieved through the temperature control switch.

[0105] The first accommodating space and the second accommodating space are separated by an isolation structure. The isolation structure between the two accommodating spaces leaves a copper bus connection structure and a channel for the control cable. After the copper bus connection structure and the control cable are assembled, the channel is sealed to ensure the independent sealing of the two accommodating spaces. The high-voltage connection between the distribution module 120 and the battery cell module 110 is connected through the copper bus connection structure instead of the high-voltage wiring harness, which can prevent heat damage caused by short circuit of the high-voltage wiring harness.

[0106] The vehicle's electrical protection devices are all integrated into the power distribution module 120 and are located in the second accommodation space. The electrical protection devices can be replaced or repaired through the maintenance port on the shell, effectively reducing the cost and layout difficulty of the vehicle and simplifying maintenance.

[0107] According to the vehicle provided in the embodiment of the present application, the electrical protection device is integrated into the distribution module 120, and the distribution module 120 and the battery cell module 110 are respectively arranged in two isolated accommodation spaces, which facilitates the selection, matching, replacement and maintenance of the electrical protection device, can improve the safety and maintenance convenience of the battery pack 100, and is conducive to the platformization of the vehicle.

[0108] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0109] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0110] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0111] In the description of this application, “plurality” means two or more.

[0112] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0113] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0114] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0115] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: a housing defining a first accommodating space and a second accommodating space that are isolated from each other; A battery cell module, the battery cell module being disposed in the first accommodation space; The power distribution module is arranged in the second accommodation space, and the power distribution module includes multiple electrical protection devices. The multiple electrical protection devices are divided into a first electrical protection device and a second electrical protection device. The first electrical protection device is connected to the battery module, and the first electrical protection device is used to protect the battery module. The second electrical protection device is arranged on the circuit connecting the battery module and the high-voltage component, and the second electrical protection device is used to protect the high-voltage component.

2. The battery pack according to claim 1, wherein: The first electrical protection device includes a first relay, a first fuse and a pre-charge protection device connected to the battery cell module, and the pre-charge protection device includes a pre-charge resistor and a pre-charge relay connected in series.

3. The battery pack according to claim 1, wherein: Also includes: A battery management system is disposed in the first accommodation space and is connected to the battery cell module.

4. The battery pack according to claim 3, wherein: The electrical protection device is a relay, which includes a high-voltage switching circuit and a low-voltage control circuit. The high-voltage switching circuit is connected to the battery module, and the low-voltage control circuit is connected to the battery management system. The battery management system is used to control the on and off of the relay.

5. The battery pack according to claim 4, characterized in that: The low-voltage control circuit is connected to the battery management system via a control cable.

6. The battery pack according to claim 4, characterized in that: A temperature control switch is provided on the loop formed by connecting the low-voltage control circuit and the battery management system. The temperature control switch is used to detect the temperature of the relay. When the temperature of the relay is greater than a temperature threshold, the temperature control switch is disconnected to disconnect the relay.

7. The battery pack according to any one of claims 1 to 6, characterized in that: The shell is provided with an isolation structure, which defines the first accommodating space and the second accommodating space in the shell. The isolation structure is provided with a copper busbar connection structure, and the battery module and the electrical protection device are connected through the copper busbar connection structure.

8. The battery pack according to any one of claims 1 to 6, characterized in that: A maintenance opening is provided on the shell at a position corresponding to the second accommodation space.

9. The battery pack according to any one of claims 1 to 6, characterized in that: The battery pack also includes a voltage acquisition device. Voltage sampling points are provided at both ends of the electrical protection device. The voltage acquisition device is connected to the voltage sampling points. The voltage information collected by the voltage acquisition device is used to determine whether the electrical protection device is adhered.

10. A vehicle, characterized in that: include: The battery pack according to any one of claims 1 to 9; At least one high-voltage component is connected to the battery pack.

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