A battery pack, a power battery system and a vehicle

Abstract

The utility model belongs to the field of vehicle power battery, specifically provides a battery pack, power battery system and vehicle. The battery pack includes the box, the box has the front end and rear end, is equipped with the front panel in the front end, is equipped with the positive pole electric connector and negative pole electric connector for the electric connection of battery pack and vehicle on the front panel, the rear end of box is equipped with MSD, and MSD includes the plug of pluggable, to cut off the high voltage loop of battery pack through pulling out the plug. The power battery system and vehicle include above-mentioned battery pack. The utility model changes the MSD position of battery pack, can be realized when pulling out battery pack outward, first pulls down MSD plug, and then installs MSD plug after completing to push in battery pack, and further improves the operation safety.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle power batteries, and in particular relates to a battery pack, a power battery system and a vehicle. Background Technology

[0002] The MSD (Manual Service Disconnect) is a key safety component in the power battery pack of new energy vehicles, used to quickly disconnect the high-voltage circuit in maintenance or emergency situations. Specifically, the MSD includes a plug that can be pulled out of the battery pack; in maintenance or emergency situations, simply pulling out the plug disconnects the high-voltage circuit.

[0003] In conventional methods, a battery pack has a panel with a positive and a negative electrical connector integrated on it, and an MSD (Mechanical Distribution Module) is usually located between the positive and negative electrical connectors. Examples include the battery packs disclosed in utility model patents with authorization publication numbers CN210379227U, CN214505716U, CN221861867U, and CN222867889U.

[0004] With the rapid popularization of new energy vehicles, fires caused by battery pack thermal runaway in these vehicles are also occurring frequently. Safety, as the primary key characteristic of new energy vehicles, is receiving increasing attention. To improve safety, in emergency situations, quickly separating the faulty battery pack from the vehicle is a feasible measure to ensure the safety of personnel and preserve the integrity of the vehicle as much as possible.

[0005] Chinese invention patent application CN119428204A discloses a remotely controllable quick-release device for a battery pack. This device includes an upper bracket, a lower bracket, a locking mechanism, an actuator, and a cylinder. The upper and lower brackets are slidably connected via a sliding assembly. The battery pack can be fixedly mounted on the upper bracket, and the lower bracket can be fixed to a vehicle carrier. The locking mechanism is located on the lower bracket, and the actuator is located on the upper bracket. When the upper bracket slides into the lower bracket, the locking mechanism locks the actuator, achieving relative fixation between the upper and lower brackets. The actuator includes an unlocking body and a spring. In an emergency, the cylinder actuates, pushing the unlocking body outward, triggering the locking mechanism to unlock, and pushing the upper bracket out, thus quickly releasing the battery pack.

[0006] However, in traditional battery packs, the panel faces inwards towards the vehicle compartment during assembly; this panel can also be called the front panel. The MSD (Mechanical Distribution Module) also enters the vehicle compartment along with the panel. This means that when the battery pack needs to be removed for maintenance or in an emergency, the high-voltage circuit remains open. Only after pulling the battery pack out to expose the panel can the MSD connector be unplugged, posing a significant safety hazard. Furthermore, when installing the battery pack into the vehicle, the MSD connector must be plugged in before pushing the pack in, keeping the high-voltage circuit closed and creating a safety risk during assembly. Utility Model Content

[0007] The purpose of this invention is to provide a battery pack that addresses the high safety hazards associated with assembling and disassembling battery packs in existing technologies. A further purpose of this invention is to provide a power battery system that solves the same technical problem. Finally, a further purpose of this invention is to provide a vehicle that solves the same technical problem.

[0008] To achieve the above objectives, the technical solution for the battery pack provided by this utility model is as follows: A battery pack includes a housing having a front end and a rear end. The front end has a front panel with a positive electrical connector and a negative electrical connector for electrically connecting the battery pack to a vehicle. The rear end of the housing has an MSD including a pluggable plug to disconnect the high-voltage circuit of the battery pack by unplugging the plug.

[0009] As a further improvement, a rear end plate is provided at the rear end of the enclosure, and the MSD is located on the rear end plate.

[0010] As a further improvement, both the positive and negative electrical connectors are plug-in connectors, which are designed to be plugged into and mated with the adapter connectors on the vehicle when the battery pack is assembled. The front panel is provided with guide posts or guide cylinders, the front ends of which extend forward beyond the front ends of the plug-in connectors, so as to guide and mate with the mating structure inside the vehicle compartment when the battery pack is assembled, thereby guiding the plug-in connectors to be plugged in.

[0011] As a further improvement, a guide post or guide cylinder is positioned between the positive and negative electrical connectors.

[0012] As a further improvement, the guide posts or guide cylinders are arranged in two rows with vertical spacing, each row having at least two guide posts or guide cylinders, and each row of guide posts or guide cylinders is arranged horizontally with spacing.

[0013] This utility model relates to an invention based on element modification, and its beneficial effects are as follows: This utility model abandons conventional thinking and changes the position of the MSD (Mechanical Storage Device). The MSD is positioned at the rear of the housing, i.e., the end opposite to the front panel. Thus, during normal battery pack assembly, the MSD connector does not need to be installed, and the high-voltage circuit of the battery pack is disconnected. After the front panel enters the vehicle compartment, since the MSD is at the rear, it will not enter the compartment with the front panel. The MSD connector can be plugged in after the battery pack is in place, ensuring the safety of the battery pack assembly process. Similarly, in maintenance or accidental situations requiring the battery pack to be pulled out, the MSD connector at the rear can be unplugged to cut off the high-voltage circuit before pulling the battery pack outwards, thus ensuring safety when removing the battery pack.

[0014] To achieve the above objectives, the technical solution of the power battery system provided by this utility model is as follows: A power battery system includes a bracket and a battery pack. The battery pack is fixed on the bracket, which is used to fix the battery pack to a vehicle carrier. The battery pack includes a housing with a front end and a rear end. The front end has a front panel with a positive electrical connector and a negative electrical connector for electrically connecting the battery pack to the vehicle. The rear end of the housing has an MSD (Medium-Support Device), which includes a pluggable plug to disconnect the high-voltage circuit of the battery pack by unplugging the plug.

[0015] As a further improvement, a rear end plate is provided at the rear end of the enclosure, and the MSD is located on the rear end plate.

[0016] As a further improvement, both the positive and negative electrical connectors are plug-in connectors, which are designed to be plugged into and mated with the adapter connectors on the vehicle when the battery pack is assembled. The front panel is provided with guide posts or guide cylinders, the front ends of which extend forward beyond the front ends of the plug-in connectors, so as to guide and mate with the mating structure inside the vehicle compartment when the battery pack is assembled, thereby guiding the plug-in connectors to be plugged in.

[0017] As a further improvement, a guide post or guide cylinder is positioned between the positive and negative electrical connectors.

[0018] This utility model is an improved invention, and its beneficial effects are as follows: This utility model abandons conventional thinking and changes the position of the MSD (Mechanical Storage Device) of the power battery pack. The MSD is located at the rear of the housing, i.e., the end opposite to the front panel. Thus, during normal battery pack assembly, the MSD connector does not need to be installed. At this time, the high-voltage circuit of the battery pack is in an open state. After the front panel enters the vehicle compartment, since the MSD is at the rear, it will not enter the compartment with the front panel. The MSD connector can be plugged in after the battery pack is in place, ensuring the safety of the battery pack assembly process. Similarly, in maintenance or accidental situations requiring the battery pack to be pulled out, the MSD connector at the rear can be unplugged to cut off the high-voltage circuit before pulling the battery pack outwards, thus ensuring safety when removing the battery pack.

[0019] To achieve the above objectives, the technical solution for the vehicle provided by this utility model is as follows: A vehicle includes a power battery system comprising a bracket and a battery pack, the battery pack being fixed on the bracket for securing the battery pack to a vehicle carrier. The battery pack includes a housing having a front end and a rear end. The front end has a front panel with a positive electrical connector and a negative electrical connector for electrically connecting the battery pack to the vehicle. The rear end of the housing has an MSD (Medium-Support Device) including a pluggable plug for disconnecting the high-voltage circuit of the battery pack by unplugging the plug.

[0020] As a further improvement, a rear end plate is provided at the rear end of the enclosure, and the MSD is located on the rear end plate.

[0021] As a further improvement, both the positive and negative electrical connectors are plug-in connectors, which are designed to be plugged into and mated with the adapter connectors on the vehicle when the battery pack is assembled. The front panel is provided with guide posts or guide cylinders, the front ends of which extend forward beyond the front ends of the plug-in connectors, so as to guide and mate with the mating structure inside the vehicle compartment when the battery pack is assembled, thereby guiding the plug-in connectors to be plugged in.

[0022] As a further improvement, a guide post or guide cylinder is positioned between the positive and negative electrical connectors.

[0023] This utility model is an improved invention, and its beneficial effects are as follows: This utility model abandons conventional thinking and changes the position of the MSD (Mechanical Storage Device) of the power battery pack. The MSD is located at the rear of the housing, i.e., the end opposite to the front panel. Thus, during normal battery pack assembly, the MSD connector does not need to be installed. At this time, the high-voltage circuit of the battery pack is in an open state. After the front panel enters the vehicle compartment, since the MSD is at the rear, it will not enter the compartment with the front panel. The MSD connector can be plugged in after the battery pack is in place, ensuring the safety of the battery pack assembly process. Similarly, in maintenance or accidental situations requiring the battery pack to be pulled out, the MSD connector at the rear can be unplugged to cut off the high-voltage circuit before pulling the battery pack outwards, thus ensuring safety when removing the battery pack. Attached Figure Description

[0024] Figure 1 This is an isometric view of one of the embodiments of the battery pack in this utility model; Figure 2 This is an isometric view of the battery pack embodiment of this utility model from another perspective.

[0025] Explanation of reference numerals in the attached figures: 1. Housing; 2. Front panel; 3. Positive electrical connector; 4. Guide post; 5. Negative electrical connector; 6. Rear panel; 7. MSD. Detailed Implementation

[0026] To improve the safety of battery pack installation and removal, the basic technical concept of this utility model is to change the position of the MSD (Mechanical Storage Device). The MSD is placed on the end of the battery pack opposite to the end where the electrical connector is located. With this design, the MSD will not enter the vehicle's compartment with the electrical connector, but will be located on the outside where it can be operated by personnel. This allows the MSD plug to be unplugged first when pulling the battery pack outward, and then reinstalled after the battery pack is pushed inward, thereby improving operational safety.

[0027] Based on the above concept, the present invention will be further described in detail below with reference to the embodiments.

[0028] Specific embodiments of the battery pack provided by this utility model: like Figure 1 and Figure 2 As shown, the battery pack includes a housing 1. Inside the housing 1 are several battery cells and conductive busbars arranged in a predetermined manner. The arrangement of the battery cells and conductive busbars can be consistent with existing technology and will not be specifically described here. The housing 1 has a front end and a rear end. The front end refers to the end with an electrical connector that is electrically connected to the vehicle, and the rear end refers to the end opposite to the front end. It should be noted that the front end and rear end here do not necessarily correspond to the front and rear directions of the vehicle.

[0029] The front panel 2 is equipped with a positive electrical connector 3 and a negative electrical connector 5 to achieve electrical connection with the vehicle. In practice, the front panel 2 also has a communication connector. When installing the battery pack into the vehicle, the front panel 2 can be inserted into the vehicle's compartment.

[0030] MSD7 (manual maintenance switch) is provided at the rear end of the housing 1. Specifically, MSD7 includes a plug and a socket. The socket is connected to the high-voltage circuit inside the battery pack. The specific connection line (hard wire) structure is not specifically limited here. The plug acts as a pluggable switch to cut off or connect the high-voltage circuit inside the battery pack. When the plug is pulled out, the high-voltage circuit inside the battery pack can be disconnected.

[0031] Unlike existing technologies, in this embodiment, the MSD7 is located at the rear end of the battery pack, i.e., the tail end, and does not enter the vehicle's compartment along with the electrical connector on the front panel 2. When assembling the battery pack, the MSD7 plug can be left uninserted initially, keeping the high-voltage circuit inside the battery pack open. After the battery pack is fully inserted, the plug is then installed, thus creating a conductive high-voltage circuit. When pulling the battery pack outwards, the plug can be unplugged first to disconnect the high-voltage circuit before the battery pack is pulled out.

[0032] As can be seen from the above analysis, in this embodiment, the high-voltage circuit can be cut off before the battery pack is assembled and during the pulling process, thereby avoiding moving the battery pack while the high-voltage circuit is conducting, thus improving safety.

[0033] Regarding the specific location of MSD7, some preferred implementations include, for example Figure 2 As shown, the rear end of the housing 1 is provided with a rear end plate 6, and the MSD7 is set on the rear end plate 6. In this way, when the battery pack is installed or pulled out, the rear end plate 6 can be used as the end directly facing the operator, making it convenient for the operator to operate the plug of the MSD7.

[0034] In other implementations, such as where the battery pack of some mining trucks is actually mounted on the left and right sides of the chassis, the MSD7 can also be located on the side of the rear end of the housing 1, as shown in the reference. Figure 2 Understood. In this case, MSD7 is positioned on one side of the left or right side of the housing 1, near the rear end plate 6.

[0035] To facilitate battery pack assembly, all electrical connectors on the front panel 2 are plug-in type connectors. That is, the positive connector 3 and the negative connector 5 shown in the figure are both plug-in type connectors. In this way, when assembling the battery pack, pushing the battery pack inward will enable the connectors to be plugged in.

[0036] To improve the mating efficiency of the electrical connectors, guide posts 4 are provided on the front panel 2, such as... Figure 1 As shown, a matching guide cylinder can be provided on the vehicle body accordingly. The front end of the guide post 4 extends forward beyond the front end of the plug-in connector. In this way, when assembling the battery pack, the guide post 4 can first cooperate with the guide cylinder on the vehicle body to guide the connector to plug in.

[0037] It is easy to understand that in other embodiments, the positions of the guide tube and the guide post 4 can also be interchanged. That is, the guide tube is set on the front panel 2, the guide post 4 is set on the vehicle body, and the front end of the guide tube extends forward beyond the front end of the plug-in connector, so as to cooperate with the guide post 4 to guide the connector to plug in.

[0038] In a more preferred implementation, such as Figure 1 As shown, the guide post 4 (or guide cylinder) is positioned between the positive electrical connector 3 and the negative electrical connector 5. This increases the distance between the positive electrical connector 3 and the negative electrical connector 5 without affecting the overall width of the battery pack, thereby achieving a greater insulation distance and improving safety.

[0039] Furthermore, such as Figure 1As shown, to enhance the guiding effect, the guide posts 4 (or guide cylinders) are arranged in two rows, one above the other. Each row has two guide posts 4, and the two guide posts 4 are arranged at intervals along the horizontal direction, thus forming multi-point guidance at different positions. It should be noted that in other embodiments, the number of guide posts 4 in each row can also be three, or four if space permits.

[0040] Specific implementation of the power battery system provided by this utility model: The power battery system includes a bracket and a battery pack. The battery pack is fixed on the bracket, and the bracket is used to fix the battery pack to the vehicle carrier. Specifically, the bracket can be a common bracket in the prior art or a release device including upper and lower brackets as described in the background art reference documents. The battery pack described in the above battery pack embodiment will not be specifically described here.

[0041] Specific embodiments of the vehicle provided by this utility model: The vehicle is a new energy vehicle, specifically a pure electric vehicle or a hybrid electric vehicle, which can be either a commercial vehicle or a passenger vehicle. The vehicle is equipped with a power battery system, and the specific implementation method of the power battery system is the same as that described above, so it will not be described in detail here.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack, characterized in that, The device includes a housing with a front end and a rear end. The front end has a front panel with a positive and a negative electrical connector for electrically connecting the battery pack to the vehicle. The rear end of the housing has an MSD (Mechanical Distribution Module) which includes a pluggable plug to disconnect the high-voltage circuit of the battery pack by unplugging the plug.

2. The battery pack according to claim 1, characterized in that, The rear end of the enclosure is equipped with a rear end plate, and the MSD is located on the rear end plate.

3. The battery pack according to claim 1 or 2, characterized in that, Both positive and negative electrical connectors are plug-in connectors, designed to mate with the compatible connectors on the vehicle during battery pack assembly. The front panel is equipped with guide posts or guide cylinders, the front ends of which extend forward beyond the front ends of the plug-in connectors to guide the plug-in connectors to mate with the mating structure inside the vehicle compartment during battery pack assembly.

4. The battery pack according to claim 3, characterized in that, The guide post or guide cylinder is located between the positive electrical connector and the negative electrical connector.

5. The battery pack according to claim 4, characterized in that, The guide posts or guide cylinders are arranged in two rows with vertical spacing. Each row has at least two guide posts or guide cylinders, and each guide post or guide cylinder in each row is arranged horizontally with spacing.

6. A power battery system, comprising a bracket and a battery pack, the battery pack being fixed on the bracket, the bracket being used to fix the battery pack to a vehicle carrier, characterized in that, The battery pack includes a housing with a front end and a rear end. The front end has a front panel with a positive electrical connector and a negative electrical connector for electrically connecting the battery pack to the vehicle. The rear end of the housing has an MSD (Medium-Support Device) which includes a pluggable plug to disconnect the high-voltage circuit of the battery pack by unplugging the plug.

7. The power battery system according to claim 6, characterized in that, The rear end of the enclosure is equipped with a rear end plate, and the MSD is located on the rear end plate.

8. The power battery system according to claim 6 or 7, characterized in that, Both positive and negative electrical connectors are plug-in connectors, designed to mate with the compatible connectors on the vehicle during battery pack assembly. The front panel is equipped with guide posts or guide cylinders, the front ends of which extend forward beyond the front ends of the plug-in connectors to guide the plug-in connectors to mate with the mating structure inside the vehicle compartment during battery pack assembly.

9. The power battery system according to claim 8, characterized in that, The guide post or guide cylinder is located between the positive electrical connector and the negative electrical connector.

10. A vehicle including a power battery system, characterized in that, The power battery system is the power battery system as described in any one of claims 6-9.

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