Battery pack separating device and system

Abstract

The utility model provides a battery pack separation device and system, and effectively solves the problem that the safety of a user cannot be guaranteed when a power battery pack of an electric vehicle is spontaneously combusted. The battery pack separation device comprises a vehicle machine and a plurality of battery pack separation mechanisms corresponding to a battery pack module, and each battery pack separation mechanism comprises a separation execution mechanism and a BMS module; the BMS module of the battery pack separation mechanism is connected with the detection end of the corresponding battery pack module, the output end of the BMS module is connected with the input end of the vehicle machine, and the separation execution mechanism of the battery pack separation mechanism is connected with the output end of the vehicle machine; the vehicle machine is used for outputting a target signal to a separation execution mechanism in a target battery pack separation mechanism corresponding to a target battery pack module on the basis of receiving a battery pack state signal output by the BMS module; and the separation execution mechanism is used for responding to the target signal to execute a target action so as to separate the target battery pack module from the power battery pack.

Description

Technical Field

[0001] The present application relates to the field of vehicle safety technology, and in particular to a battery pack separation device and system. Background Art

[0002] At present, electric vehicles are becoming more and more popular and intelligent. The power provided by the battery pack of electric vehicles not only provides power for the driving of electric vehicles, but also provides power for other functions of electric vehicles, such as refrigeration. No matter how the power is consumed, when the power is reduced, it will cause mileage anxiety for users driving the car. In order to solve the mileage anxiety problem, the charging speed is getting faster and faster, the power battery technology is advancing by leaps and bounds, the energy density is getting higher and higher, the weight and volume are getting smaller and smaller, and the battery capacity is getting larger and larger, which makes it extremely easy for the battery pack to spontaneously combust and explode.

[0003] Currently, the most commonly used battery thermal management system BMS in the industry to prevent battery overheating and spontaneous combustion is to adjust the battery temperature by circulating refrigerant. However, when an electric vehicle spontaneously combusts, the battery thermal management system BMS cannot play a more obvious temperature regulation role. In other words, when the power battery pack of an electric vehicle spontaneously combusts, the user's safety cannot be guaranteed. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a battery pack separation device and system, which effectively solves the problem that the safety of users cannot be guaranteed when the power battery pack of an electric vehicle spontaneously ignites.

[0005] In a first aspect, an embodiment of the present application provides a battery pack separation device, which is applied to a vehicle, wherein the vehicle includes a power battery pack, and the power battery pack has a plurality of battery pack modules. The battery pack separation device includes a plurality of battery pack separation mechanisms corresponding to the vehicle computer and the battery pack modules, and the battery pack separation mechanism includes a separation actuator and a BMS module; the BMS module of the battery pack separation mechanism is connected to a detection end of the corresponding battery pack module, the output end of the BMS module is connected to an input end of the vehicle computer, and the separation actuator of the battery pack separation mechanism is connected to an output end of the vehicle computer;

[0006] The BMS module is used to detect the status of the battery pack module to obtain multiple battery pack status signals, and send the multiple battery pack status signals to the vehicle computer;

[0007] The vehicle computer is used to output a target signal to a separation actuator in a target battery pack separation mechanism corresponding to a target battery pack module based on the received battery pack status signal;

[0008] The separation actuator is used to receive a target signal sent by the vehicle computer and execute a target action in response to the target signal to separate the target battery pack module from the power battery pack.

[0009] In some embodiments, the separation actuator includes a heating component and a fixing component;

[0010] The heating component is used to heat the fixed component after receiving the target signal output by the vehicle computer;

[0011] The fixing assembly is used to fix the target battery pack module in the power battery pack and to separate the target battery pack module from the power battery pack after being heated.

[0012] In some embodiments, the separation actuator further comprises an ejection assembly;

[0013] The ejection assembly is used to eject the target battery pack module that is separated from the power battery pack downward.

[0014] In some embodiments, the fixing assembly includes a tray, a fixing rod and a buckle to fix the battery pack module on the power battery pack;

[0015] The upper end of the fixing rod is fixedly connected to the upper cover of the power battery pack on which the battery pack module is fixed, and the supporting portion at the lower end of the fixing rod supports the battery pack module, and the supporting portion is separated from the battery pack module when deformed;

[0016] The buckle is used to fix the upper end of the battery pack module to the upper cover corresponding to the power battery pack;

[0017] The tray is used to support the battery pack module.

[0018] In some embodiments, the fixing rod includes two layers of laminated metal sheets, and the thermal expansion coefficients of the two layers of metal sheets are different.

[0019] In some embodiments, the tray and the buckle are both made of polyoxymethylene material.

[0020] In some embodiments, the vehicle computer outputs a target signal to a separation actuator in a battery pack separation mechanism corresponding to a target battery pack module based on a plurality of battery pack status signals output by the received BMS module, and the separation actuator separates the target battery pack module from the power battery pack;

[0021] Alternatively, the vehicle computer outputs a cooling signal to a refrigerator of the vehicle based on the received multiple battery pack status signals output by the BMS module.

[0022] In some embodiments, the vehicle computer outputs a reminder signal to the user's mobile terminal based on the received multiple battery pack status signals output by the BMS module.

[0023] In some embodiments, the vehicle computer includes a storage module;

[0024] The storage module is used to receive multiple battery pack status signals output by the BMS module and target signals output by the vehicle computer.

[0025] In a second aspect, an embodiment of the present application further provides a battery pack separation system, the system comprising any one of the battery pack separation devices and a server, the battery pack separation device being communicatively connected to the server;

[0026] The server is used to send a detection instruction to the battery pack separation device;

[0027] The battery pack separation device is used to receive a detection instruction, and in response to the detection instruction, call a separation execution mechanism to separate the battery pack module from the battery pack.

[0028] The embodiments of the present application have the following beneficial effects:

[0029] A battery pack separation device provided in an embodiment of the present application is applied to a vehicle, wherein the vehicle includes a power battery pack, the power battery pack has a plurality of battery pack modules, the battery pack separation device includes a plurality of battery pack separation mechanisms corresponding to the vehicle computer and the battery pack modules, the battery pack separation mechanism includes a separation actuator and a BMS module; the BMS module of the battery pack separation mechanism is connected to the detection end of the corresponding battery pack module, the output end of the BMS module is connected to the input end of the vehicle computer, and the separation actuator of the battery pack separation mechanism is connected to the output end of the vehicle computer; the BMS module is used to detect the state in the battery pack module to obtain a plurality of battery pack state signals, and The multiple battery pack status signals are sent to the vehicle computer; the vehicle computer is used to output a target signal to a separation actuator in a target battery pack separation mechanism corresponding to a target battery pack module based on the received battery pack status signal; the separation actuator is used to receive the target signal sent by the vehicle computer, and execute a target action in response to the target signal to separate the target battery pack module from the power battery pack, thereby ejecting the target battery pack module that has spontaneously combusted from the power battery pack, avoiding affecting the battery pack module that has not spontaneously combusted, solving the problem that the safety of the user cannot be guaranteed when the power battery pack of the electric vehicle spontaneously combusts, thereby ensuring the safety of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of a battery pack separation device provided in an embodiment of the present application is shown;

[0032] Figure 2 A schematic diagram of the structure of a separation actuator provided in an embodiment of the present application is shown;

[0033] Figure 3 A schematic diagram of the structure of a fixing assembly provided in an embodiment of the present application is shown;

[0034] Figure 4 A schematic structural diagram of a battery pack separation system provided in an embodiment of the present application is shown.

[0035] Description of main symbols:

[0036] 1-vehicle computer; 2-battery pack separation mechanism; 21-separation actuator; 22-BMS module;

[0037] 211-heating component; 212-fixing component; 213-ejecting component; 11-storage module;

[0038] 2121-tray, 2122-fixing rod; 2123-clip. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0040] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0041] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present application, are intended only to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing items or adding the possibility of one or more features, numbers, steps, operations, elements, components, or combinations of the foregoing items.

[0042] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0043] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present application belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present application.

[0044] Currently, the most commonly used battery thermal management system BMS in the industry to prevent battery overheating and spontaneous combustion is to adjust the battery temperature by circulating refrigerant. However, when an electric vehicle spontaneously combusts, the battery thermal management system BMS cannot play a more obvious temperature regulation role. In other words, when the power battery pack of an electric vehicle spontaneously combusts, the user's safety cannot be guaranteed.

[0045] Based on this, a battery pack separation device and system provided in an embodiment of the utility model can eject the target battery pack module that has spontaneously combusted from the power battery pack, avoiding affecting the battery pack modules that have not spontaneously combusted, solving the problem that the safety of users cannot be guaranteed when the power battery pack of an electric vehicle spontaneously combusts, thereby ensuring the safety of users.

[0046] In order to understand this embodiment, a battery pack separation device disclosed in an embodiment of the utility model is first introduced in detail.

[0047] Example 1

[0048] Please refer to Figure 1, a battery pack separation device provided in an embodiment of the present application, applied to a vehicle, the vehicle comprising a power battery pack, the power battery pack having a plurality of battery pack modules, the battery pack separation device comprising a vehicle machine 1 and a plurality of battery pack separation mechanisms 2 corresponding to the battery pack modules, the battery pack separation mechanism 2 comprising a separation actuator 21 and a BMS module 22; the BMS module 22 of the battery pack separation mechanism is connected to a detection end of the corresponding battery pack module, the output end of the BMS module 22 is connected to an input end of the vehicle machine 1, and the separation actuator 21 of the battery pack separation mechanism 2 is connected to an output end of the vehicle machine 1;

[0049] The BMS module 22 is used to detect the state of the battery pack module to obtain multiple battery pack state signals, and send the multiple battery pack state signals to the vehicle computer;

[0050] The vehicle computer 1 is used to output a target signal to a separation actuator 21 in a target battery pack separation mechanism 2 corresponding to a target battery pack module based on the received battery pack status signal;

[0051] The separation actuator 21 is used to receive a target signal sent by the vehicle computer 1 and execute a target action in response to the target signal to separate the target battery pack module from the power battery pack.

[0052] The BMS module 22 is a battery thermal management system BMS installed on an existing vehicle, which is used to collect battery pack status signals based on multiple sensors. The battery pack status signals include signals such as single cell voltage signals, current signals, battery extreme temperature signals, battery module voltage insulation signals, etc. Based on the collected multiple battery pack status signals, it can be determined whether the numerical value corresponding to the battery pack status signal reaches the preset battery pack module spontaneous combustion data range or the vehicle computer initial setting data. The vehicle computer initial setting data is set by each vehicle manufacturer. The preset battery pack module spontaneous combustion data range can be the data range of other vehicles at the time of spontaneous combustion sent by the server obtained by the vehicle computer. The BMS module 22 can be a simple logical operation, such as setting a comparator to compare the battery pack status signal with the preset battery pack module spontaneous combustion data range. If it is reached, the BMS module 22 will send the collected battery pack status signal to the vehicle computer 1.

[0053] The vehicle computer 1 refers to a terminal that includes an AI model. The AI ​​model is continuously trained and interactively learned with AI models on other vehicles. The vehicle computer 1 interacts with the vehicle factory server. The vehicle factory server stores data on other vehicles that have spontaneous combustion and other phenomena and corresponding processing methods, and provides them to the vehicle for learning and use. After receiving the battery pack status signal sent by the BMS module, the vehicle computer 1 determines the location of the battery pack module that has spontaneous combustion according to the location information of the battery pack module corresponding to the BMS module 22. At this time, the vehicle computer outputs a target signal, and the target signal is sent to the separation actuator 21 in the target battery pack separation mechanism 2 corresponding to the battery pack module that has spontaneous combustion.

[0054] The separation actuator 21 is used to receive the target signal sent by the vehicle computer 1. The separation actuator will confirm whether it is the same battery pack module based on the position information of the battery pack module that has spontaneous combustion phenomenon contained in the target signal. After confirming that it is, it will respond to the target signal to perform the target action. The target action is to separate the target battery pack module from the power battery pack. The separation actuator 21 will separate the target battery pack module that has spontaneous combustion phenomenon from the power battery pack according to its own structural characteristics to avoid affecting other normal battery pack modules.

[0055] While the separation actuator 21 separates the target battery pack module from the power battery pack, the vehicle computer 1 controls the vehicle's ADAS system to intervene urgently to ensure safety, so as to move the vehicle to a relatively open area in a short time and then discard the burning battery pack. The windows and door locks are opened to facilitate escape and rescue. At the same time, the vehicle computer 1 outputs the battery pack status signal sent by the BMS module to the vehicle manufacturer's server.

[0056] In combination with the above embodiments, Figure 2 As shown, the separation actuator 21 includes a heating component 211 and a fixing component 212;

[0057] The heating component 211 is used to heat the fixing component 212 after receiving the target signal output by the vehicle computer 1;

[0058] The fixing assembly 212 is used to fix the target battery pack module in the power battery pack and to separate the target battery pack module from the power battery pack after being heated.

[0059] The separation actuator 21 includes a heating component 211 and a fixing component 212. The heating component is used to drive the power supply to heat the heating component 211 based on the target signal after confirming the target signal. The heating component can be a resistance wire, or other heating elements that can be wound around the fixing component 212. The power supply is built into the separation actuator 21. The heating element can be heated to a temperature at which the fixing component is deformed or melted, such as 200 degrees Celsius, so that the fixing firmware can separate the target battery pack module from the power battery pack after being heated.

[0060] The fixing component 212 is used to fix and support the target battery pack module under normal temperature environment, so that the target battery pack module can provide power for the power battery pack together with other battery pack modules. After the fixing component 212 is heated by the heating component 211, it deforms or melts, so that the target battery pack module is separated from the power battery pack, thereby achieving the effect of separating the target battery pack module from the power battery pack, avoiding affecting the safety of other normal battery pack modules that have not spontaneously combusted.

[0061] In combination with the above embodiment, the separation actuator 21 further includes an ejection component 213;

[0062] The ejection assembly 213 is used to eject the target battery pack module that is separated from the power battery pack downward.

[0063] The separation actuator 21 also includes an ejection component 213, which is pressed between the upper cover of the battery pack and the battery pack module. When the fixing component 212 is fixing the battery pack module, the ejection component 213 cannot function. When the fixing component 212 loses its fixing function for the target battery pack module and is deformed or melted in a high temperature environment, the ejection component 213 returns to the state when it is not pressed and restores its elasticity. In the process of restoring elasticity, the target battery pack module that has lost its fixing function is ejected downward, so that the target battery pack module is separated from the power battery pack, thereby achieving the effect of separating the target battery pack module from the power battery pack. The ejection component 213 can be a spring or other devices with similar principles. In order to play a better role, a battery pack module can be provided with multiple ejection components 213 to achieve a more stable and efficient ejection effect.

[0064] In combination with the above embodiments, Figure 3 As shown; the fixing assembly 212 includes a tray 2121, a fixing rod 2122 and a buckle 2123, so that the battery pack module is fixed on the power battery pack;

[0065] The upper end of the fixing rod 2122 is fixedly connected to the upper cover of the power battery pack on which the battery pack module is fixed, and the supporting portion at the lower end of the fixing rod 2122 supports the battery pack module, and the supporting portion is separated from the battery pack module when deformed;

[0066] The buckle 2123 is used to fix the upper end of the battery pack module to the upper cover corresponding to the power battery pack;

[0067] The tray 2121 is used to support the battery pack module.

[0068] The fixing assembly 212 includes a tray 2121, a fixing rod 2122 and a buckle 2123, which work together to fix the battery pack module on the power battery pack. The buckle 2123 is used to fix the upper end of the battery pack module on the upper cover corresponding to the power battery pack. In order to ensure the fixing effect, the number of the buckles 2123 can be multiple, and the specific number can be specifically set according to the contact area between the battery pack module and the upper cover. The upper end of the fixing rod 2122 is fixedly connected to the upper cover of the power battery pack to which the battery pack module is fixed, and can be welded on the upper cover, that is, The upper end of the fixing rod and the upper cover are inseparable, which ensures the function of the pop-up component 213 and avoids the possibility of the target battery pack module being separated from the fixing rod and the upper cover. The supporting part at the lower end of the fixing rod 2122 supports the battery pack module, and the supporting part separates from the battery pack module when the heating component 211 is heated and deformed. The number of the fixing rods 2122 is two or more, which can be specifically set according to actual conditions; the tray 2121 is used to support the battery pack module, and cooperates with the lower end of the fixing rod 2122 to jointly support the battery pack module.

[0069] In combination with the above embodiment, the fixing rod 2122 includes two layers of laminated metal sheets, and the thermal expansion coefficients of the two layers of metal sheets are different.

[0070] The fixing rod 2122 comprises two layers of metal sheets with different thermal expansion coefficients, wherein the layer with a larger thermal expansion coefficient is an active layer, and the layer with a smaller thermal expansion coefficient is a passive layer. The materials of the active layer and the passive layer are composed of multiple components. The active layer can be made of Mn75%, Ni15%, Cu10% or Ni20%, Mn6%, and the rest is iron, and its thermal expansion coefficient is 27×10-6 / ℃ and 20×10-6 / ℃ respectively within 20-100℃; and the passive layer composition is Ni36%, the rest is iron or Ni42%, the rest is iron. Its thermal expansion coefficient is (1.8~4.8)×10-6 / ℃. When the temperature is normal, it normally plays a fixing role for the fixing component 212. However, if the heating component 211 heats the fixing component 212, the bimetallic strip in the fixing rod 2122 is heated, and the free expansion length of the active layer is greater than that of the passive layer. However, since the two layers are firmly combined together, the hot bimetallic strip is bent into an arc, so that the lower end of the fixing rod 2122 cannot cooperate with the tray 2121, so that the battery pack module can have space to move. The opposite is true when cooling.

[0071] In combination with the above embodiment, the tray and the buckle are both made of polyoxymethylene material.

[0072] The tray and the buckle are made of polyformaldehyde material, which is a tough and elastic material. It still has good creep resistance, geometric stability and impact resistance at room temperature or low temperature, which is beneficial to battery stability. However, it can melt at high temperatures such as 190 degrees. After melting, the tray and the buckle lose their supporting effect on the target battery pack module, causing the target battery pack module to detach downward, and the ejection effect of the ejection component 213 separates the target battery pack module from the power battery pack.

[0073] In combination with the above embodiment, the vehicle computer 1 outputs a target signal to the separation actuator 21 in the battery pack separation mechanism 2 corresponding to the target battery pack module based on the multiple battery pack status signals output by the BMS module 22, and the separation actuator 21 separates the target battery pack module from the power battery pack;

[0074] Alternatively, the vehicle computer 1 outputs a cooling signal to a refrigerator of the vehicle based on the received multiple battery pack status signals output by the BMS module 22 .

[0075] The vehicle computer 1 compares the battery pack status data corresponding to the multiple battery pack status signals output by the BMS module 22 with the preset data range of the battery pack module spontaneous combustion, which may be compared by a comparator. If the battery pack status data corresponding to the battery pack status signal is greater than the preset data range of the battery pack module spontaneous combustion, the battery pack status data corresponding to the battery pack status signal reaches the data range of the battery pack module spontaneous combustion, then the vehicle computer outputs a target signal to the target separation actuator 21, and the target separation actuator 21 executes the target action to separate the target battery pack module from the power battery pack;

[0076] Alternatively, the vehicle computer 1 compares the battery pack status data corresponding to the multiple battery pack status signals output by the received BMS module 22 with the preset data range of abnormal heating of the battery pack module, which may be compared by a comparator. If the battery pack status data corresponding to the battery pack status signal is greater than the preset data range of abnormal heating of the battery pack module, the battery pack status data corresponding to the battery pack status signal reaches the data range of abnormal heating of the battery pack module, and the vehicle computer outputs a cooling signal to the vehicle's refrigerator, and the refrigerator is used to cool the target battery pack module to regulate the temperature of the target battery pack module, thereby preventing the temperature of the target battery pack module from affecting the safety of the target battery pack module. If the temperature of the target battery pack module cannot be regulated, the separation actuator 21 in the battery pack separation mechanism 2 is started within a preset time period to ensure the safety of the power battery pack.

[0077] When the separation actuator 21 in the battery pack separation mechanism 2 is activated within the preset time period, the vehicle computer 1 controls the vehicle's ADAS system to intervene urgently to ensure safety, so as to move the vehicle to a relatively open area in a short time and then discard the burning battery pack, and inform the driver on the display that "the vehicle has entered an emergency state and ADAS has intervened urgently. The faulty battery pack will be ejected after a preset period of time.

[0078] In combination with the above embodiment, the vehicle computer outputs a reminder signal to the user's mobile terminal based on the received multiple battery pack status signals output by the BMS module 22.

[0079] The vehicle computer is based on the multiple battery pack status signals output by the received BMS module 22. If the battery pack status data corresponding to the battery pack status signal is greater than the preset data range of abnormal heating of the battery pack module, and the battery pack status data corresponding to the battery pack status signal reaches the data range of abnormal heating of the battery pack module, then the vehicle computer 1 outputs a reminder signal to the user's mobile terminal, reminding the owner to start the separation actuator 21 in the battery pack separation mechanism 2 by manual start, thereby ensuring the safety of the power battery pack.

[0080] In combination with the above embodiment, the vehicle computer 1 includes a storage module 11;

[0081] The storage module 11 is used to receive multiple battery pack status signals output by the BMS module and target signals output by the vehicle computer.

[0082] After receiving the multiple battery pack status signals output by the BMS module 22 and the target signals output by the vehicle computer, the vehicle computer stores the multiple battery pack status signals output by the BMS module 22 and the target signals output by the vehicle computer based on the set storage module 11. If the vehicle computer 1 outputs a reminder signal to the user's mobile terminal, the storage signal will also be stored.

[0083] Example 2

[0084] The embodiment of the present application also provides a battery pack separation system, such as Figure 4 As shown, the system includes the battery pack separation device and a server as described in any one of the items, and the battery pack separation device is communicatively connected with the server;

[0085] The server is used to send a detection instruction to the battery pack separation device;

[0086] The battery pack separation device is used to receive a detection instruction, and in response to the detection instruction, call a separation execution mechanism to separate the battery pack module from the battery pack.

[0087] The server is different from the car factory server. The server is built into the vehicle and is used to start itself after the vehicle is started and send a detection instruction to the battery pack separation device. The detection instruction can be pre-stored or automatically generated after the server starts.

[0088] The battery pack separation device is used to receive detection instructions and respond to detection instructions. The battery pack separation device is preset with a method for responding to detection instructions, that is, after receiving the detection instruction, the separation actuator 21 is called, and based on the battery pack status signal output by the BMS module 22, the battery pack module is separated from the battery pack according to the judgment of the vehicle computer 1.

[0089] The battery pack separation device in the battery pack separation system provided in this embodiment has the same technical features as the battery pack separation device provided in the above embodiments, so it can also solve the same technical problems and achieve the same technical effects.

[0090] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solutions of the utility model, rather than to limit them. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A battery pack separation device, characterized in that: Applied to a vehicle, the vehicle includes a power battery pack, the power battery pack has a plurality of battery pack modules, the battery pack separation device includes a plurality of battery pack separation mechanisms corresponding to the vehicle computer and the battery pack modules, the battery pack separation mechanism includes a separation actuator and a BMS module; the BMS module of the battery pack separation mechanism is connected to the detection end of the corresponding battery pack module, the output end of the BMS module is connected to the input end of the vehicle computer, and the separation actuator of the battery pack separation mechanism is connected to the output end of the vehicle computer; The BMS module is used to detect the status of the battery pack module to obtain multiple battery pack status signals, and send the multiple battery pack status signals to the vehicle computer; The vehicle computer is used to output a target signal to a separation actuator in a target battery pack separation mechanism corresponding to a target battery pack module based on the received battery pack status signal; The separation actuator is used to receive a target signal sent by the vehicle computer and execute a target action in response to the target signal to separate the target battery pack module from the power battery pack.

2. The device according to claim 1, characterized in that The separation actuator includes a heating component and a fixing component; The heating component is used to heat the fixed component after receiving the target signal output by the vehicle computer; The fixing assembly is used to fix the target battery pack module in the power battery pack and to separate the target battery pack module from the power battery pack after being heated.

3. The device according to claim 2, characterized in that The separation actuator also includes an ejection assembly; The ejection assembly is used to eject the target battery pack module that is separated from the power battery pack downward.

4. The device according to claim 2, characterized in that The fixing assembly includes a tray, a fixing rod and a buckle, so that the battery pack module is fixed on the power battery pack; The upper end of the fixing rod is fixedly connected to the upper cover of the power battery pack on which the battery pack module is fixed, and the supporting portion at the lower end of the fixing rod supports the battery pack module, and the supporting portion is separated from the battery pack module when deformed; The buckle is used to fix the upper end of the battery pack module to the upper cover corresponding to the power battery pack; The tray is used to support the battery pack module.

5. The device according to claim 4, characterized in that The fixing rod comprises two layers of laminated metal sheets, and the thermal expansion coefficients of the two layers of metal sheets are different.

6. The device according to claim 4, characterized in that The tray and the buckle are both made of polyoxymethylene material.

7. The device according to claim 1, characterized in that The vehicle computer outputs a target signal to a separation actuator in a battery pack separation mechanism corresponding to a target battery pack module based on a plurality of battery pack status signals output by the BMS module, and the separation actuator separates the target battery pack module from the power battery pack; Alternatively, the vehicle computer outputs a cooling signal to a refrigerator of the vehicle based on the received multiple battery pack status signals output by the BMS module.

8. The device according to claim 7, characterized in that The vehicle computer outputs a reminder signal to the user's mobile terminal based on the received multiple battery pack status signals output by the BMS module.

9. The device according to claim 1, characterized in that The vehicle computer includes a storage module; The storage module is used to receive multiple battery pack status signals output by the BMS module and target signals output by the vehicle computer.

10. A battery pack separation system, characterized in that: The system comprises a battery pack separation device and a server as described in any one of claims 1 to 9, wherein the battery pack separation device is communicatively connected to the server; The server is used to send a detection instruction to the battery pack separation device; The battery pack separation device is used to receive a detection instruction, and in response to the detection instruction, call a separation execution mechanism to separate the battery pack module from the battery pack.

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