Battery pack and vehicle

Abstract

The utility model discloses a battery pack and a vehicle, and relates to the technical field of new energy. The battery pack comprises a box body, a support and a connecting row, the support and the connecting row are fixedly arranged in the box body, a plurality of electromagnetic valves are arranged on the inner wall of the box body, a plurality of mounting bins are arranged in the support, battery cells are inserted into the mounting bins, the electromagnetic valves are arranged opposite to bin doors of the mounting bins, and the connecting row is arranged adjacent to top covers of the mounting bins. An avoiding hole and a pop-up mechanism are arranged on the top cover; the electromagnetic valve is connected with the battery management system, the electromagnetic valve is used for stretching out to abut against the battery cell according to a control signal of the battery management system, so that a pole of the battery cell penetrates through the avoiding hole to stretch out of the mounting bin to be connected with the connecting bar, and the electromagnetic valve is also used for retracting to be separated from the battery cell according to the control signal of the battery management system; and the popping mechanism is used for popping up the battery cell along the inner wall of the mounting bin so as to be disconnected with the connecting bar. According to the battery pack and the vehicle, the on-off state of the battery cell in the power utilization loop can be changed through joint cooperation of the electromagnetic valve and the pop-up mechanism.

Description

Technical Field

[0001] The utility model relates to the field of new energy technology, and in particular to a battery pack and a vehicle. Background Art

[0002] With the continuous development of the new energy industry, users' requirements for battery electrical performance are also constantly increasing. High power and high rate are currently the mainstream technical upgrade routes in the industry. However, this method will cause the surface temperature of the battery cell to rise sharply, and the attendant risk is system safety. How to increase system safety while ensuring system capacity improvement is a technical problem faced by industry technicians.

[0003] At present, the system's safety management is mainly based on the electronic control unit, supplemented by fire protection, thermal management and other units. The electronic control unit can control the execution unit to cut off the circuit and the fuse to passively blow the circuit through the battery management system. The thermal management unit can lower the system temperature, thereby reducing the probability of thermal runaway. The fire protection unit uses fire extinguishing media to prevent the risk of thermal runaway from spreading. Since these methods all deal with problems from outside the battery pack, there is a certain degree of delayed failure. Utility Model Content

[0004] The purpose of the present utility model is to provide a battery pack and a vehicle, which can switch the solenoid valve back and forth between extension and retraction under the control of the battery management system, and then, with the cooperation of the external force provided by the pop-up mechanism, can realize the change of the on-off state of the battery cell in the power circuit.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] According to a first aspect of the present invention, a battery pack is provided, comprising a housing, a bracket fixedly disposed within the housing, and a connection bar. The housing has a plurality of solenoid valves disposed on its inner wall, the bracket having a plurality of mounting compartments disposed within the bracket, wherein battery cells are inserted into the mounting compartments. The solenoid valves are disposed opposite the compartment doors of the mounting compartments, and the connection bar is disposed adjacent to the top cover of the mounting compartment. The top cover is provided with a clearance hole and an ejection mechanism. The solenoid valves are connected to a battery management system and configured to extend in response to a control signal from the battery management system until they abut against the battery cells, allowing the battery cell terminals to pass through the clearance hole and extend out of the mounting compartment to connect with the connection bar. The solenoid valves are also configured to retract in response to a control signal from the battery management system until they are separated from the battery cells, and the ejection mechanism is configured to eject the battery cells along the inner wall of the mounting compartment to disconnect them from the connection bar. The battery pack can switch between extending and retracting the solenoid valves under the control of the battery management system, and then, under the external force provided by the ejection mechanism, can switch the on / off state of the battery cells in the power circuit.

[0007] As an implementation method, there are two brackets, and the two brackets are symmetrically arranged on opposite sides of the connecting row. Along the connection direction of the two brackets, the solenoid valves are provided on the two opposite inner walls of the box.

[0008] As an implementation method, the poles of two battery cells arranged opposite to each other in the two brackets are connected in parallel through the connecting bar, and the pole of any battery cell in the two brackets is connected in series with the pole of the adjacent battery cell through the connecting bar.

[0009] As an implementation method, a plurality of through holes are provided in the connecting row, the number of the connecting rows is multiple, an insulating transfer tube is provided between two adjacent connecting rows, and the through holes of the two adjacent connecting rows are connected through the insulating transfer tube.

[0010] As an implementation method, it also includes an output row, and the box body is provided with an air inlet and an exhaust port. The output row and the connecting row located on the side close to the exhaust port are respectively connected to the air-cooled thermal management pipeline unit through the air inlet and the exhaust port.

[0011] As an implementation method, the connection bar and the output bar are provided with pole covers, and the shape of the pole covers matches the shape of the poles of the battery cells.

[0012] As an implementation method, it also includes a pressure relief pipe, which is arranged in parallel with the connecting row, an inlet is provided on the pressure relief pipe, and a pressure relief hole is also provided on the top cover, and the explosion-proof valve of the battery cell, the pressure relief hole and the inlet are connected.

[0013] As an implementable embodiment, a centralized pressure relief port is provided on the box body, the pressure relief pipe is closed at one end away from the centralized pressure relief port, and the pressure relief pipe is connected to the vacuum pump unit of the battery system through the pressure relief port at one end close to the centralized pressure relief port.

[0014] As an implementable embodiment, the bottom of the bracket is provided with a mounting foot, and / or the inner wall of the installation bin is provided with a mounting opening on a side close to the bin door.

[0015] A second aspect of the present invention provides a vehicle comprising the aforementioned battery pack. The battery pack is capable of switching the solenoid valve between extension and retraction under the control of a battery management system, and, in conjunction with the external force provided by an ejection mechanism, can thereby alter the on / off state of the battery cell in the power circuit.

[0016] The beneficial effects of the embodiments of the present utility model include:

[0017] The battery pack includes a box body and a bracket and a connecting row fixed in the box body. A plurality of solenoid valves are provided on the inner wall of the box body, a plurality of mounting compartments are provided in the bracket, and battery cells are inserted in the mounting compartments. The solenoid valves and the compartment doors of the mounting compartments are arranged opposite to each other, and the connecting row and the top cover of the mounting compartment are arranged adjacent to each other, and the top cover is provided with an avoidance hole and a pop-up mechanism; the solenoid valve is connected to the battery management system, and the solenoid valve is used to extend to abut the battery cell according to the control signal of the battery management system, so that the pole of the battery cell passes through the avoidance hole and extends out of the mounting compartment to connect with the connecting row. The solenoid valve is also used to retract to separate from the battery cell according to the control signal of the battery management system, and the pop-up mechanism is used to pop the battery cell along the inner wall of the mounting compartment to disconnect it from the connecting row. After the battery cell is inserted into the installation compartment through the compartment door, the battery management system can first control the solenoid valve to extend until it abuts the battery cell, so that the battery cell moves along the inner wall of the installation compartment until it abuts the top cover on the side away from the compartment door. At this time, the pole of the battery cell can pass through the avoidance hole and extend out of the installation compartment and be electrically connected to the connecting bar, so that the battery cell is connected to the power circuit, and the pop-up mechanism is in a compressed state due to the extrusion effect, and will continuously accumulate elastic potential energy; when the battery management system detects an abnormality in a battery cell, the battery management system can control the solenoid valve to retract and separate from the battery cell, removing the extrusion effect applied to the battery cell. At this time, the pop-up mechanism can release the elastic potential energy, so that the battery cell moves in the opposite direction along the inner wall of the installation compartment until it is disconnected from the connecting bar, thereby disconnecting the battery cell from the power circuit. Compared with the welding of battery cells and connecting bars in the prior art, the battery pack provided in the present application can apply a squeezing effect on the battery cells through the solenoid valve so that the battery cells can come into contact with the connecting bars and thus be successfully connected. In the event of a fault, the solenoid valve can also remove the squeezing effect applied to the battery cells, and with the cooperation of the elastic force provided by the pop-up mechanism, the battery cells can be separated from the connecting bars and thus disconnected. This can facilitate the change of the on-off state of the battery cells in the power circuit according to actual needs, and this on-off state is in a physical sense. Therefore, it has the advantages of faster response, more reliable operation, higher safety, and not easy to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is one of the structural diagrams of the battery pack provided in an embodiment of the present utility model;

[0020] Figure 2The second structural diagram of the battery pack provided by the embodiment of the present utility model;

[0021] Figure 3 The third structural diagram of the battery pack provided by the embodiment of the present utility model;

[0022] Figure 4 This is a fourth structural diagram of a battery pack provided by an embodiment of the present utility model;

[0023] Figure 5 The fifth structural diagram of the battery pack provided by the embodiment of the present utility model;

[0024] Figure 6 This is the sixth structural diagram of the battery pack provided in an embodiment of the present utility model.

[0025] Icons: 100-battery pack; 10-housing; 11-solenoid valve; 12-air inlet; 13-exhaust outlet; 14-centralized pressure relief outlet; 15-high-pressure interface; 16-low-pressure interface; 17-adapter pipe; 20-bracket; 21-installation compartment; 211-top cover; 2111-avoidance hole; 2112-pressure relief hole; 213-mounting foot; 214-installation port; 22-battery cell; 30-connecting row; 31-through hole; 32-insulating adapter tube; 40-ejection mechanism; 50-output row; 51-welding block; 52-pole cover; 60-pressure relief pipe; 61-inlet; 70-collection harness; 80-connection plate. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0031] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections, indirect connections through an intermediate medium, or connections within two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] Please refer to Figures 1 to 6 , an embodiment of the present application provides a battery pack 100, including a box body 10 and a bracket 20 and a connecting bar 30 fixedly arranged in the box body 10, a plurality of solenoid valves 11 are provided on the inner wall of the box body 10, a plurality of mounting chambers 21 are provided in the bracket 20, and battery cells 22 are inserted into the mounting chamber 21, the solenoid valves 11 are arranged opposite to the compartment doors of the mounting chambers 21, the connecting bar 30 is arranged adjacent to the top cover 211 of the mounting chamber 21, and the top cover 211 is provided with an avoidance hole 2111 and an ejection mechanism 40; the solenoid valve 11 is connected to a battery management system, and the solenoid valve 11 is used to extend to abut against the battery cell 22 according to a control signal of the battery management system, so that the pole of the battery cell 22 passes through the avoidance hole 2111 and extends out of the mounting chamber 21 to connect with the connecting bar 30, and the solenoid valve 11 is also used to retract to separate from the battery cell 22 according to a control signal of the battery management system, and the ejection mechanism 40 is used to eject the battery cell 22 along the inner wall of the mounting chamber 21 to disconnect it from the connecting bar 30. The battery pack 100 can switch the solenoid valve 11 back and forth between extension and retraction under the control of the battery management system, and then, with the cooperation of the external force provided by the pop-up mechanism 40, can realize the change of the on-off state of the battery cell 22 in the power circuit.

[0033] It should be noted that if Figure 1 As shown, the battery pack 100 includes a box body 10, and a bracket 20 is provided inside the box body 10. The battery cell 22 is installed through the bracket 20, so that the battery cell 22 and the bracket 20 together form a battery module, so that the box body 10 plays a protective role on the battery module. For example, the bracket 20 is fixedly connected to the bottom of the box body 10 to prevent the bracket 20 from shaking relative to the box body 10, thereby improving the safety performance of the battery pack 100. Specifically, as Figures 2 to 4 As shown, a plurality of mounting chambers 21 are provided in the bracket 20. The plurality of mounting chambers 21 are independent of each other. The battery cells 22 are arranged along the Figure 3 The battery cells 22 are inserted into the installation compartment 21 in the direction of the arrow shown in the figure. Thus, two adjacent battery cells 22 can be separated by the wall of the installation compartment 21. The advantage of this design is that even if a single battery cell 22 has thermal runaway, the spread of thermal runaway between other battery cells 22 can be avoided as much as possible.

[0034] like Figures 1 to 6 As shown, a plurality of solenoid valves 11 are provided on the inner wall of the box body 10, and the position of the solenoid valve 11 is opposite to the position of the door of the installation chamber 21. In addition, a connecting row 30 is provided in the box body 10, and the position of the connecting row 30 is adjacent to the position of the top cover 211 of the installation chamber 21, wherein the top cover 211 and the door are respectively provided on opposite sides of the installation chamber 21 along the plugging direction of the battery cell 22, and an avoidance hole 2111 and a pop-up mechanism 40 are also provided on the top cover 211. For example, in this embodiment, the pop-up mechanism 40 is a spring.

[0035] In the actual work process, please follow Figure 4 to Figure 1 The order can be understood. After the battery cell 22 is inserted into the installation compartment 21 through the compartment door, the battery management system can first control the solenoid valve 11 to extend until it abuts against the battery cell 22, so that the battery cell 22 moves along the inner wall of the installation compartment 21 to the side away from the compartment door and abuts against the top cover 211. At this time, the pole of the battery cell 22 can pass through the avoidance hole 2111 and extend out of the installation compartment 21 and be electrically connected to the connecting bar 30, so that the battery cell 22 is connected to the power circuit, and the pop-up mechanism 40 is in a compressed state due to the squeezing effect, and will continuously accumulate elastic potential energy; when the battery management system detects that a certain battery cell 22 has an abnormality, the battery management system can control the solenoid valve 11 to retract and separate from the battery cell 22, and remove the squeezing effect applied to the battery cell 22. At this time, the pop-up mechanism 40 can release the elastic potential energy, so that the battery cell 22 moves in the opposite direction along the inner wall of the installation compartment 21 until it is disconnected from the connecting bar 30, thereby disconnecting the battery cell 22 from the power circuit.

[0036] Since the power supply of the battery management system comes from the UPS power supply outside the battery system, no matter what fault occurs in the battery system itself, the UPS power supply can provide power to the battery management system, so that the battery management system is not afraid of power outage risks. Therefore, the battery management system controls the mutual switching of the extension and retraction of the solenoid valve 11, which has the advantages of intelligent control and more stable and reliable control.

[0037] Compared with the conventional welding method used in the prior art to connect the battery cell 22 with the connecting bar 30, the battery pack 100 provided in the present application can apply an extrusion effect to the battery cell 22 through the solenoid valve 11, so that the battery cell 22 can be in contact with the connecting bar 30 and thus successfully connected. In the event of a fault, the solenoid valve 11 can also remove the extrusion effect applied to the battery cell 22, and with the cooperation of the elastic force provided by the pop-up mechanism 40, the battery cell 22 can be separated from the connecting bar 30 and disconnected. It is convenient to change the on-off state of the battery cell 22 in the power circuit according to actual needs, and this on-off state is in a physical sense. Therefore, it has the advantages of faster response, more reliable operation, higher safety, and not easy to fail.

[0038] As an implementable method, Figures 1 to 6 As shown, there are two brackets 20, which are symmetrically arranged on opposite sides of the connecting row 30. Along the connecting direction of the two brackets 20 (i.e., the insertion direction of the battery cells 22 mentioned above), solenoid valves 11 are provided on the two opposite inner walls of the box 10 to correspond to the battery cells 22 on the two brackets 20, respectively. For example, to facilitate installation, multiple solenoid valves 11 can be pre-installed on a mounting plate, which is then fixed to the inner wall of the box 10. In addition, the correspondence between the solenoid valves 11 and the battery cells 22 can be a one-to-one correspondence or a many-to-one correspondence, so that the squeezing effect exerted by the solenoid valves 11 on the battery cells 22 is more stable and reliable.

[0039] like Figures 4 to 6As shown, in the actual assembly process, the top covers 211 of the two brackets 20 can be used to fuse the two brackets 20 and the connecting row 30 located therebetween together through a molding process, wherein the series pipeline before the connecting row 30 can be completed through an injection molding process, and the collection harness 70 for collecting voltage and temperature inside the battery module can be integrated first through a pre-embedded process, thereby forming a multifunctional connecting plate 80 with electrical connection, voltage collection and temperature collection functions, and then the multifunctional connecting plate 80 is connected to the four side panels with insulating properties of the installation chamber 21 except the top cover 211 through a hot pressing welding process, thereby integrating the two brackets 20 and the connecting row 30, pressure relief pipe 60, collection harness 70, etc. located therebetween, thereby improving the structural strength of the formed integral frame structure.

[0040] As an implementable method, Figure 2 and Figure 3 As shown, the battery cells 22 on the two brackets 20 are arranged in a horizontal and vertical manner, face to face (i.e., poles facing poles). When the battery cells 22 are connected in series and parallel, the poles of the two battery cells 22 arranged opposite to each other in the two brackets 20 can be connected in parallel through the connecting bar 30, and at the same time, the pole of any battery cell 22 in the two brackets 20 can be connected in series with the pole of the adjacent battery cell 22 through the connecting bar 30. The advantage of this design is that the parallel connection of the two battery cells 22 can be achieved between the poles of the two battery cells 22 through a very short connecting bar 30, thereby greatly reducing the cross-connection distance of the connecting bar 30, thereby reducing the heat generated by the connecting bar 30, and improving the energy utilization efficiency of the battery system.

[0041] As an implementable method, Figures 2 to 5 As shown, a plurality of through-holes 31 are provided in the connecting bar 30. There are multiple connecting bars 30, and an insulating transfer tube 32 is provided between two adjacent connecting bars 30. The through-holes 31 of the two adjacent connecting bars 30 are connected by the insulating transfer tube 32. As a result, the gas in the housing 10 can flow through the through-holes 31, thereby removing the heat generated by the connecting bars 30 and reducing the actual temperature of the connecting bars 30.

[0042] As an implementable method, Figures 1 to 5As shown, along the plug-in direction perpendicular to the battery cell 22, since the poles of the battery cell 22 at the opposite ends of the bracket 20 need to be connected to the high-voltage copper busbar outside the box 10, the battery pack 100 also includes an output bus 50, which is connected to the high-voltage copper busbar outside the box 10 through the output bus 50 and the connecting bus 30 located on the side close to the exhaust port 13. For example, a welding block 51 is provided on the output bus 50 to facilitate the connection between the output bus 50 and the high-voltage copper busbar, or a threaded hole can also be provided on the welding block 51 so that the output bus 50 and the high-voltage copper busbar can be detachably connected by bolt connection. On this basis, the box body 10 is provided with an air inlet 12 and an exhaust port 13. The output row 50 and the connecting row 30 located on the side close to the exhaust port 13 can be connected to the air cooling thermal management pipeline unit through the air inlet 12 and the exhaust port 13 respectively, so that the air cooling thermal management pipeline unit can pass the cooling medium into the box body 10, thereby performing heat exchange through the cooling medium and further reducing the actual temperature in the box body 10. In addition, if Figure 1 As shown, a high-pressure interface 15 and a low-pressure interface 16 are further provided on the box body 10 , and the design thereof is the same as that in the prior art, so they will not be described in detail.

[0043] As an implementable method, Figure 5 As shown, a pole cover 52 is provided on the connection bar 30 and the output bar 50. The shape of the pole cover 52 matches the shape of the pole of the battery cell 22, so that the pole cover 52 increases the contact area of ​​the pole with the connection bar 30 and the output bar 50 for physical contact, thereby improving the reliability and stability of the connection.

[0044] As an implementable method, Figure 5 As shown, the battery pack 100 also includes a pressure relief duct 60, which is arranged in parallel with the connecting bar 30. The pressure relief duct 60 is provided with an inlet 61, and the top cover 211 is also provided with a pressure relief hole 2112. The explosion-proof valves of the battery cells 22, the pressure relief hole 2112, and the inlet 61 are connected. Therefore, if a battery cell 22 fails, the high-temperature and high-pressure gas generated inside the cell will open the explosion-proof valve and can then flow into the pressure relief duct 60 through the pressure relief hole 2112 and the inlet 61, and finally out of the box 10 through the pressure relief duct 60, thereby preventing the risk of thermal runaway.

[0045] As an implementable method, Figure 1 As shown, the box 10 is provided with a centralized pressure relief port 14, the end of the pressure relief pipe 60 away from the centralized pressure relief port 14 is closed, and the end of the pressure relief pipe 60 close to the centralized pressure relief port 14 is connected to the battery system's vacuum pump unit through the pressure relief port. Therefore, when a battery cell 22 fails, the high-temperature material in the pressure relief pipe 60 can be quickly pumped out of the battery pack 100 through the negative pressure of the vacuum pump unit. Figure 1As shown, there is a certain distance between the connecting row 30 and the output row 50 and the air inlet 12 and the air outlet, and between the pressure relief pipe 60 and the centralized pressure relief port 14, and they can be connected respectively through the adapter pipe 17 during assembly.

[0046] As an implementable method, Figure 2 As shown, a mounting foot 213 is provided at the bottom of the bracket 20, and the bracket 20 can be fixed in the box body 10 by bolt connection; and / or, a mounting opening 214 is provided on the inner wall of the mounting chamber 21 on the side close to the chamber door, so that the battery cell 22 can be more easily assembled in the mounting chamber 21 through the mounting opening 214.

[0047] The present application also provides a vehicle including the above-mentioned battery pack 100. Since the structure and beneficial effects of the battery pack 100 have been described in detail in the above-mentioned embodiments, they will not be repeated here.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that: The invention comprises a box body and a bracket and a connecting row fixedly arranged in the box body, a plurality of solenoid valves are arranged on the inner wall of the box body, a plurality of mounting compartments are arranged in the bracket, battery cells are inserted in the mounting compartments, the solenoid valves and the compartment doors of the mounting compartments are arranged opposite to each other, the connecting row and the top cover of the mounting compartment are arranged adjacent to each other, and the top cover is provided with an avoidance hole and a pop-up mechanism; the solenoid valve is connected to the battery management system, and the solenoid valve is used to extend to abut the battery cell according to the control signal of the battery management system, so that the pole of the battery cell passes through the avoidance hole and extends out of the mounting compartment to connect with the connecting row, and the solenoid valve is also used to retract to separate from the battery cell according to the control signal of the battery management system, and the pop-up mechanism is used to pop the battery cell along the inner wall of the mounting compartment to disconnect it from the connecting row.

2. The battery pack according to claim 1, wherein: There are two brackets, which are symmetrically arranged on opposite sides of the connecting row. Along the connecting direction of the two brackets, the solenoid valves are arranged on two opposite inner walls of the box.

3. The battery pack according to claim 2, wherein: The poles of the two battery cells arranged opposite to each other in the two brackets are connected in parallel through the connecting bar, and the pole of any battery cell in the two brackets is connected in series with the pole of the adjacent battery cell through the connecting bar.

4. The battery pack according to claim 3, wherein: A plurality of through holes are provided in the connecting row. There are a plurality of connecting rows. An insulating transfer tube is provided between two adjacent connecting rows. The through holes of the two adjacent connecting rows are connected through the insulating transfer tube.

5. The battery pack according to claim 4, characterized in that: It also includes an output row, and the box body is provided with an air inlet and an exhaust port. The output row and the connecting row located on the side close to the exhaust port are respectively connected to the air-cooling thermal management pipeline unit through the air inlet and the exhaust port.

6. The battery pack according to claim 5, characterized in that: The connection bar and the output bar are provided with pole covers, and the shape of the pole covers matches the shape of the poles of the battery cells.

7. The battery pack according to claim 1, wherein: It also includes a pressure relief pipe, which is arranged in parallel with the connecting row. The pressure relief pipe is provided with an inlet, and the top cover is also provided with a pressure relief hole. The explosion-proof valve of the battery cell, the pressure relief hole and the inlet are connected.

8. The battery pack according to claim 7, characterized in that: The box body is provided with a centralized pressure relief port, the end of the pressure relief pipe away from the centralized pressure relief port is closed, and the end of the pressure relief pipe close to the centralized pressure relief port is connected to the air pump unit of the battery system through the pressure relief port.

9. The battery pack according to claim 1, wherein: The bottom of the bracket is provided with a mounting foot, and / or the inner wall of the mounting chamber is provided with a mounting opening on a side close to the chamber door.

10. A vehicle, characterized in that: A battery pack comprising the battery pack according to any one of claims 1 to 9.

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