CN219086179U - Battery pack structure and electric equipment - Google Patents

Abstract

The application provides a battery pack structure and electric equipment, and relates to the technical field of power batteries. The battery pack structure includes: the length direction of the battery cells is configured to be in the left-right direction, and the left end and the right end of each battery cell are provided with output poles; the wire harness isolation assembly comprises an isolation plate, an FPC and a bus bar, wherein the isolation plate is provided with a first installation surface and a second installation surface which are vertically arranged, the second installation surface covers the output electrode, the FPC is arranged on the first installation surface, the bus bar is arranged on the second installation surface, and the bus bar is respectively connected with the FPC and the output electrode. The output pole of electric core sets up in the left and right sides, and the first installation face and the second installation face of division board set up perpendicularly, and the busbar sets up in the second installation face, and FPC sets up in the first installation face, and FPC and busbar can be located the different positions of electric core respectively, and the second installation face sets up in the outside of output pole, when electric core charges and discharges, can make things convenient for the heat dissipation of electric core, be favorable to improving the security performance of product.

Description

Battery pack structure and electric equipment

Technical Field

The application relates to the technical field of power batteries, in particular to a battery pack structure and electric equipment.

Background

With the rapid development of new energy industry, the battery application field is wider, for example, the battery is used in automobiles, and the power battery system is used for providing electric energy for the electric automobiles, so that the electric energy becomes a power source of the electric automobiles, and the use of non-renewable resources is reduced.

In addition to the improvement of the energy density of the battery, the safety of the battery is a non-negligible problem in the development of battery technology. Therefore, how to improve the safety of the battery is a technical problem to be solved in the battery technology.

Disclosure of Invention

An object of the application is to provide a battery package structure and consumer, be favorable to improving the security performance of product.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in a first aspect, the present application provides a battery pack structure comprising: the length direction of the battery cells is configured to be in a left-right direction, and output poles are arranged at the left end and the right end of each battery cell; the wire harness isolation assembly comprises an isolation plate, an FPC and a bus bar, wherein the isolation plate is provided with a first installation surface and a second installation surface which are vertically arranged, the second installation surface covers the output electrode, the FPC is arranged on the first installation surface, the bus bar is arranged on the second installation surface, and the bus bar is respectively connected with the FPC and the output electrode.

In the process of the implementation, the output poles of the battery cells are arranged on the left side and the right side, the first mounting surface and the second mounting surface of the isolation plate are vertically arranged, the bus bar is arranged on the second mounting surface, the FPC is arranged on the first mounting surface, the FPC and the bus bar can be respectively located at different positions of the battery cells, the second mounting surface is arranged on the outer side of the output poles, when the battery cells are charged and discharged, heat dissipation of the battery cells can be facilitated, and the safety performance of products is improved.

In some embodiments, the isolation board includes a first isolator and a second isolator, the first isolator is configured at an upper end of the battery cell, the second isolator is connected with the first isolator, the FPC is exposed to the first isolator, and the bus bar is exposed to the second isolator.

In the process of the realization, the first isolator is connected with the second isolator, and the first isolator is provided with the FPC, and the second isolator is provided with the busbar, so that after the busbar is connected with the output pole, the first isolator is positioned at the upper end of the battery cell, and the second isolator is positioned at the left side or the right side of the battery cell, so that the space utilization rate of the whole structure can be improved, the energy density is improved, the heat dissipation of the battery cell is also facilitated, the influences of short circuit, electromagnetic interference and the like caused by mutual interpenetration and contact between the space between the high-voltage busbars are effectively avoided, and the safety of the whole battery cell system is improved.

In some embodiments, the separator further comprises a baffle plate, the baffle plate is connected to the first separator and/or the second separator, and the baffle plate is protruding along a direction of the second separator away from the first separator.

In the implementation process, the baffle is arranged on the first isolator and/or the second isolator, so that the dielectric fluid with higher temperature can be prevented from splashing onto the FPC in the severe movement in the process of acting as electricity by the battery cell, and the FPC is damaged.

In some embodiments, the harness isolation assembly further includes a connector connected to the FPC and the busbar, respectively, and the isolation plate is provided with a receiving groove for receiving the connector. Through set up the connecting piece between FPC and busbar for the busbar is connected with the output utmost point, and FPC and busbar are located the different positions of electric core, not only can realize the collection to electric core information, also make things convenient for the busbar to absorb the difference in height of electric core simultaneously, guarantees welding performance, also can avoid busbar and peripheral object to produce simultaneously and interfere, improves space utilization, also effectively keeps apart electric interference.

In some embodiments, the battery pack structure further comprises a harmonica tube disposed between two adjacent cells and/or outside of the outermost cells. Through setting up the harmonica pipe in the big face department of electric core, can be convenient to overall structure's overall arrangement, and the harmonica pipe not only can realize the heat conduction to electric core, also can play simultaneously and support, fire prevention is thermal-insulated, buffer electric core ageing expansion space and bear the effect of certain flexible clamp plate.

In some embodiments, the harmonica pipe is provided with a plurality of pipes in an up-down direction. Can play the roles of heat conduction, support, fire prevention, heat insulation, buffer of the aging expansion space of the battery cell and bearing of a certain flexible pressing plate.

In some embodiments, the battery pack structure further includes an end plate member, a length direction of the end plate member is configured to be the left-right direction, and the end plate member is located outside the battery cell. The end plate member is arranged on the outer side of the battery cell and can be used for restraining the expansion of the battery cell, so that the service life of the battery cell is ensured.

In some embodiments, the end plate member includes an end plate body and a fixing body, the fixing body is connected to a side of the end plate body away from the battery cell, and a plurality of fixing holes are formed in the fixing body. Through setting up fixed body on the end plate body, and be provided with the fixed orifices on the fixed body, can conveniently fix with the battery box of battery package structure, be favorable to restricting the inflation of electric core, guarantee the life of electric core.

In some embodiments, the battery pack structure further comprises a thermal insulation pad disposed between the end plate and the electrical cell.

In some embodiments, the battery pack structure further includes a battery case having a receiving cavity configured to receive the battery cell and the harness isolation assembly, the receiving cavity having a depth not less than a height of the upper end of the busbar, and a cavity configured to receive a dielectric fluid.

In the process of the realization, the battery box body is provided with the accommodating cavity and the cavity, so that when the battery core and the wire harness isolation assembly are arranged in the accommodating cavity, dielectric fluid in the cavity and the harmonica pipe can provide heat transmission paths with more uniform and high heat capacity for different positions of the battery core, the thermal contact resistance in an indirect cooling system is reduced, the temperature conduction efficiency and the temperature control performance are greatly ensured, the good heat conduction effect is realized, and the thermal management efficiency is ensured.

In a second aspect, the present application further provides a powered device, including a battery pack structure as set forth in any one of the preceding claims.

Because the electric equipment provided by the embodiment of the second aspect of the present application includes the battery pack structure described in the technical scheme of the first aspect, the electric equipment has all technical effects of the above embodiment, and is not described herein again.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and that other related drawings can be obtained according to these drawings without inventive effort for the users of the art.

Fig. 1 is a schematic structural view of a battery pack structure according to an embodiment of the present application.

Fig. 2 is a partial schematic structure view of a battery pack structure according to an embodiment of the present application.

Fig. 3 is a schematic structural view of a wire harness insulation assembly of a battery pack structure according to an embodiment of the present application.

Fig. 4 is a partially enlarged schematic illustration of a wire harness insulation assembly of a battery pack structure as disclosed in an embodiment of the present application.

Fig. 5 is a schematic view of a harmonica tube of a battery pack structure according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural view of an end plate member of a battery pack structure according to an embodiment of the present application.

Fig. 7 is a schematic structural view of a battery case of a battery pack structure according to an embodiment of the present disclosure.

Reference numerals

100. A battery cell; 101. an explosion-proof valve; 200. a harness isolation assembly; 201. a partition plate; 2011. a first separator; 2012. a second separator; 202. an FPC; 203. a busbar; 204. a connecting piece; 205. a baffle; 300. a harmonica tube; 301. a pipe; 400. a terminal plate member; 401. an end plate body; 402. a fixed body; 500. a battery case; 501. a lower box body; 502. a frame body; 503. an inner frame; 600. an insulating plate.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments herein, without inventive effort are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the inventive product, are merely for convenience of description of the present application and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood to be specific to the user of ordinary skill in the art.

Examples

Based on the consideration of technology, process maturity and processing cost, the mainstream new energy automobiles at home and abroad all adopt a conventional module layout scheme, and the layout scheme has the advantages of simple structure, high heat management efficiency and the like, and specifically comprises the following steps: (1) In terms of structure, the aluminum extrusion molding process is adopted, the technical process is relatively mature, the production efficiency is high, and the large-scale batch production is facilitated; (2) In terms of heat management efficiency, the flatness can be precisely controlled within a certain length range, the contact area with the surface of the module is large, the heat resistance is small, the heat management efficiency is improved, and the contact area of the flow channel is large, the temperature difference between the upper part and the lower part of the inside of the battery monomer can be effectively reduced, and the battery can be well protected during rapid charge and discharge and low-temperature preheating.

The safety of the new energy vehicle at the present stage is an industry pain point, and is mainly related to the heat management performance of the battery, and the conventional module layout scheme has three defects: (1) the flatness of extrusion molding is not well controlled: when the length of the lower box body is too high, a long harmonica tube is needed, the long harmonica tube is easy to deform, the flatness is not well controlled, the contact area with the surface of the module is small, and the thermal resistance is large, so that the thermal management efficiency is affected; (2) the integration level is low: the liquid cooling plate is used as an independent part to be installed in the power battery pack, so that more space is occupied and the cost is increased; the wire harness isolation board assembly of the module is also formed by assembling a plurality of parts such as a busbar, an FPC, a wire harness isolation board and the like, and the assembly quality problem is easily caused, so that the driving safety is influenced. (3) Single-sided contact thermal management is inefficient: the harmonica pipe liquid cooling plate is flatly paved on the inner surface of the lower box assembly and in the space below the bottom of the conventional module, only contacts one surface of the battery cell, and has limited heat exchange capacity due to limited contact area.

In view of this, as shown in fig. 1 to 7, in a first aspect, the present application provides a battery pack structure including: the battery cell 100 and the wire harness isolation assembly 200 are arranged on the battery cell 100, the wire harness isolation assembly 200 is welded with the output electrode of the battery cell 100, so that series-parallel connection between the battery cells 100 can be realized, meanwhile, in the process of charging and discharging the battery cells 100, information (such as voltage, temperature and the like of the battery cells 100) of the battery cells 100 can be collected through the wire harness isolation assembly 200, and a battery management system can conveniently manage the battery pack structure.

Specifically, the plurality of electric cores 100, the length direction of the electric cores 100 is configured to be the left-right direction, and the left-right ends of the electric cores 100 are provided with output poles; the wire harness isolation assembly 200 includes an isolation board 201, an FPC202, and a bus bar 203, wherein the isolation board 201 has a first mounting surface and a second mounting surface that are vertically arranged, the second mounting surface is covered by the output electrode, the FPC202 is disposed on the first mounting surface, the bus bar 203 is disposed on the second mounting surface, and the bus bar 203 is connected to the FPC202 and the output electrode, respectively.

The length of the battery cell 100 is distributed along the left-right direction, the output electrode of the battery cell 100 includes an anode and a cathode, wherein the anode may be disposed on the left side of the battery cell 100, the cathode may be disposed on the right side of the battery cell 100, the anode may also be disposed on the right side of the battery cell 100, the cathode may be disposed on the left side of the battery cell 100, and the like, and the left and right sides of the battery cell 100 may be further provided with an explosion-proof valve 101, so that when the battery cell 100 is out of control, pressure relief and the like may be performed through the explosion-proof valve 101, and when a plurality of battery cells 100 are connected in series-parallel through the wire harness isolation assembly 200, a plurality of battery cells 100 may be arranged along the front-rear direction, and both the anode and the cathode of the battery cell 100 may be connected with the bus bar 203 of the wire harness isolation assembly 200, so as to realize series-parallel connection between the battery cells 100.

It can be understood that the output poles are arranged on the left side and the right side of the battery cell 100, the height of the battery cell 100 can be set to be about 100mm, which is far lower than the standard level of 130mm in the industry, the layout of the battery pack structure and the suitability of the whole vehicle ground clearance index are greatly improved, so that higher space utilization rate is brought, and higher energy-to-weight ratio can be realized by combining the battery cell 100 with higher energy density.

It should be noted that, the isolation board 201, the FPC202, and the bus bar 203 of the harness isolation assembly 200 may be integrally formed by an integral molding technology, the isolation board 201 may be made of a material such as high temperature resistance and insulation resistance, and the first installation surface and the second installation surface of the isolation board 201 may be vertically distributed, that is, the isolation board 201 may be configured as an "L" shape, the first installation surface may be disposed above the electrical core 100, the second installation surface may be disposed on the left side or the right side of the electrical core 100, the second installation surface may cover the output electrode of the electrical core 100, and in order to ensure heat dissipation of the electrical core 100, the anti-explosion valve 101 of the electrical core 100 is exposed to the second installation surface, that is, the height of the lower end of the second installation surface is not less than the height of the upper end of the anti-explosion valve 101, and in order to ensure good insulation, a plurality of electrical cores 100 are disposed along the front and rear sides, and when the bus bar 203 is connected, the insulating board 600 is disposed between the upper ends of the first installation surface and the electrical core 100.

In the above implementation process, the output electrode of the battery cell 100 is disposed on the left and right sides, the first mounting surface and the second mounting surface of the isolation plate 201 are vertically disposed, the busbar 203 is disposed on the second mounting surface, the FPC202 is disposed on the first mounting surface, the FPC202 and the busbar 203 can be located at different positions of the battery cell 100, and the second mounting surface is disposed on the outer side of the output electrode, when the battery cell 100 is charged and discharged, heat dissipation of the battery cell 100 can be facilitated, and safety performance of a product is improved.

As shown in fig. 3-4, the isolation board 201 includes a first isolator 2011 and a second isolator 2012, the first isolator 2011 is disposed at the upper end of the battery cell 100, the second isolator 2012 is connected to the first isolator 2011, the FPC202 is exposed to the first isolator 2011, and the bus 203 is exposed to the second isolator 2012. For example, the first separator 2011 and the second separator 2012 may be integrally formed, or may be formed integrally by other manners.

In the implementation process, the first separator 2011 is connected with the second separator 2012, the FPC202 is arranged on the first separator 2011, and the bus bar 203 is arranged on the second separator 2012, so that after the bus bar 203 is connected with the output electrode, the first separator 2011 is positioned at the upper end of the battery cell 100, the second separator 2012 is positioned at the left side or the right side of the battery cell 100, the space utilization rate of the whole structure can be improved, the energy density is improved, meanwhile, the heat dissipation of the battery cell 100 is also facilitated, and the influences of short circuit, electromagnetic interference and the like generated by the mutual insertion and contact of the space between the bus bar 203 with high voltage are effectively avoided, so that the safety of the whole battery cell 100 system is improved.

As shown in fig. 4, the isolation board 201 further includes a baffle 205, where the baffle 205 is connected to the first isolation body 2011 and/or the second isolation body 2012, and the baffle 205 is protruding along the direction of the second isolation body 2012 away from the first isolation body 2011. For example, the baffle 205 and the first separator 2011 or the second separator 2012 may be integrally formed, and the baffle 205 may be disposed on the second separator 2012, or may be disposed at a connection position of the first separator 2011 and the second separator 2012, or may be disposed on the first separator 2011 or the like, and by disposing the baffle 205 on the first separator 2011 and/or the second separator 2012, the electrical core 100 may prevent the dielectric fluid with a higher temperature from splashing onto the FPC202 during a severe movement to damage the FPC202 in the process of acting as electricity.

As shown in fig. 4, the harness isolation assembly 200 further includes a connector 204, the connector 204 includes, but is not limited to, a nickel plate, the connector 204 is connected to the FPC202 and the bus bar 203, respectively, and the isolation plate 201 is provided with a receiving groove for receiving the connector 204. Through set up connecting piece 204 between FPC202 and busbar 203 for busbar 203 is connected with the output utmost point, and FPC202 and busbar 203 are located the different positions of electric core 100, not only can realize the collection to electric core 100 information, also make things convenient for busbar 203 to absorb the difference in height of electric core 100 simultaneously, guarantees welding performance, also can avoid busbar 203 to produce the interference with peripheral object simultaneously, improves space utilization, also effectively keeps apart electric interference, namely one end (FPC 202) and the outside electrical connection of wire harness isolation component 200, the other end (busbar 203) is connected with outside high voltage electricity.

As shown in fig. 5, the battery pack structure further includes a harmonica tube 300, the harmonica tube 300 is disposed between two adjacent battery cells 100 and/or outside the battery cells 100 on the outermost layer, the harmonica tube 300 may be formed by extrusion of aluminum, the harmonica tube 300 is fixed on the battery case 500 (i.e. the bottom of the battery case 500) of the battery pack structure through a heat conducting structural adhesive, and the harmonica tube 300 may be provided with a certain elasticity, both the left and right ends of the harmonica tube 300 are open, so as to facilitate the circulation of dielectric fluid, rapidly conduct away the heat of the contact surface with the battery cells 100, and in order to ensure the insulation safety performance, the contact position of the harmonica tube 300 and the large surface of the battery cells 100 may be sprayed with an insulating heat conducting material, and the heat conducting coefficient is not less than 3W/(m·k). Through setting up harmonica pipe 300 in the big face department of electric core 100, can be convenient overall structure's overall arrangement, and harmonica pipe 300 not only can realize the heat conduction to electric core 100, also can play simultaneously support, fire prevention thermal-insulated, buffer electric core 100 ageing expansion space and bear the effect of certain flexible clamp plate.

In some embodiments, the harmonica pipe 300 is provided with a plurality of pipes 301 along the up-down direction, wherein the upper end of the harmonica pipe 300 may be provided with a circular arc shape, so as to facilitate the fitting of the insulating plate 600 to the upper end of the battery cell 100. Can play roles of heat conduction, support, fire prevention, heat insulation, buffer of the aging expansion space of the battery cell 100 and bearing of a certain flexible pressing plate.

As shown in fig. 6, the battery pack structure further includes a terminal plate 400, the length direction of the terminal plate 400 is configured as the left-right direction, and the terminal plate 400 is located outside the battery cell 100. By providing the end plate member 400 on the outside of the cell 100, it can be used to constrain the expansion of the cell 100 and ensure the service life of the cell 100.

In some embodiments, the end plate 400 includes an end plate body 401 and a fixing body 402, the fixing body 402 is connected to a side of the end plate body 401 away from the battery cell 100, and a plurality of fixing holes are formed in the fixing body 402. Through setting up fixed body 402 on end plate body 401, and be provided with the fixed orifices on the fixed body 402, can conveniently fix with battery box 500 of battery package structure, be favorable to retraining the inflation of electric core 100, ensure the life of electric core 100.

In some embodiments, the battery pack structure further includes a heat insulation pad disposed between the end plate 400 and the battery cell 100, the heat insulation pad having insulation properties. The main performance parameters of the heat insulation pad are as follows: (1) density: g/cm3 is less than or equal to 2.5; (2) flame retardant rating: v0; (3) thermal conductivity coefficient: 30% + -5% compression of; the thickness and the size of the heat conducting pad are optimally matched with the actual assembly and the heat dissipation simulation effect.

As shown in fig. 7, the battery pack structure further includes a battery case 500, the battery case 500 having a receiving cavity configured to receive the battery cell 100 and the harness isolation assembly 200, and a cavity configured to receive a dielectric fluid, wherein the dielectric fluid is not limited to the following materials: hydrocarbon oils, silicone oils, and fluorinated hydrocarbons. The battery case 500 includes a case frame and a lower case 501, the case frame includes a frame body 502 and an inner frame 503, the inner frame 503 is disposed in an inner cavity of the frame body 502 (may be fixed by friction stir welding or riveting, etc., to ensure structural strength and tightness of the battery case 500), the inner frame 503 may be disposed in a cross shape to divide the accommodating cavity into four sub-accommodating cavities, and the inner frame 503 and the frame body 502 may be disposed with the cavity, while the lower case 501 may be disposed with the cavity (corresponding to a liquid cooling plate) for facilitating heat conduction to the bottom of the battery cell 100, and an insulating material including but not limited to an insulating heat-conducting paste may be disposed between the lower case 501 and the battery cell 100, and the lower case 501 may be extruded in an aluminum profile molding manner, and specific water channel parameters (such as width, depth, water channel trend, etc.) may be combined with simulation and result of the experiment to perform adaptability optimization. The water inlet and outlet pipe orifices can be combined with the water channel parameters of the liquid cooling plate to carry out optimized layout and parameter adjustment, so that five surfaces of the battery cell 100 (except the upper end of the battery cell 100) can be contacted, the temperature control property and the temperature uniformity are greatly ensured, after the scheme is adopted, the temperature of the battery cell 100 can be accurately controlled to 35 ℃ from the original highest temperature of 48 ℃, and the temperature difference can be accurately controlled to 3 ℃ from the original 15 ℃; meanwhile, the inner frame 503 can directly contact the bus 203, so that the thermal contact resistance of the original natural cooling scheme is reduced, the temperature control performance is greatly ensured, and after the scheme is adopted, the temperature of the bus 203 can be accurately controlled to 35 ℃ from the original highest temperature of 80 ℃, and the overcurrent capacity is correspondingly improved.

It can be appreciated that the lower case 501 may be provided with a water inlet and a water outlet, and the opening mode of the water inlet and the water outlet includes a normal normally open mode and a Plus mode (flexible arrangement, relatively normally open), and the opening degree of the water inlet and the water outlet is adaptively adjusted according to the temperature degree of the battery in combination with actual driving working conditions, such as high-speed climbing, high-power fast charging, and the like, so as to implement an optimal thermal management control strategy, control the temperature difference of the battery pack within a reasonable range, ensure the use safety of the battery pack within a reasonable temperature range, and further ensure the driving safety.

In the implementation process, the battery box 500 is provided with the accommodating cavity and the cavity, so that when the battery cell 100 and the wire harness isolation assembly 200 are arranged in the accommodating cavity, dielectric fluid in the cavity and the harmonica pipe 300 can provide more uniform and high-heat-capacity heat transmission paths for different positions of the battery cell 100, the thermal contact resistance in an indirect cooling system is reduced, the temperature conduction efficiency and the temperature control performance are greatly ensured, the good heat conduction effect is realized, and the thermal management efficiency is ensured.

In a second aspect, the present application further provides a powered device, including a battery pack structure as set forth in any one of the preceding claims. The electric device may be a vehicle, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, or the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy, and the like. The embodiment of the application does not limit the electric device in particular. Taking a vehicle as an example, the vehicle may further include a controller and a motor, the controller being configured to control the power battery to power the motor, for example, for operating power requirements during start-up, navigation, and travel of the vehicle.

Because the electric equipment provided by the embodiment of the second aspect of the present application includes the battery pack structure described in the technical scheme of the first aspect, the electric equipment has all technical effects of the above embodiment, and is not described herein again.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (11)

1. A battery pack structure, comprising:

the length direction of the battery cells is configured to be in a left-right direction, and output poles are arranged at the left end and the right end of each battery cell;

the wire harness isolation assembly comprises an isolation plate, an FPC and a bus bar, wherein the isolation plate is provided with a first installation surface and a second installation surface which are vertically arranged, the second installation surface covers the output electrode, the FPC is arranged on the first installation surface, the bus bar is arranged on the second installation surface, and the bus bar is respectively connected with the FPC and the output electrode.

2. The battery pack structure according to claim 1, wherein the isolation plate includes a first isolator and a second isolator, the first isolator is disposed at an upper end of the electric core, the second isolator is connected with the first isolator, the FPC is exposed to the first isolator, and the bus bar is exposed to the second isolator.

3. The battery pack structure according to claim 2, wherein the separator further comprises a baffle plate, the baffle plate is connected to the first separator and/or the second separator, and the baffle plate is provided protruding in a direction of the second separator away from the first separator.

4. The battery pack structure according to claim 1, wherein the harness isolation assembly further includes a connector connected to the FPC and the bus bar, respectively, and the isolation plate is provided with a receiving groove for receiving the connector.

5. The battery pack structure of claim 1, further comprising a harmonica tube disposed between two adjacent cells and/or outside of the outermost cell.

6. The battery pack structure according to claim 5, wherein the harmonica tube is provided with a plurality of pipes in an up-down direction.

7. The battery pack structure according to claim 1, further comprising an end plate member, the length direction of the end plate member being arranged in the left-right direction, and the end plate member being located outside the battery cell.

8. The battery pack structure according to claim 7, wherein the end plate member comprises an end plate body and a fixing body, the fixing body is connected to a side of the end plate body away from the battery cell, and a plurality of fixing holes are formed in the fixing body.

9. The battery pack structure of claim 7, further comprising a heat insulating pad disposed between the end plate and the electrical cell.

10. The battery pack structure of claim 1, further comprising a battery case having a receiving cavity configured to receive the electrical core and the harness isolation assembly, and a cavity having a depth not less than a height of the bus bar upper end, the cavity configured to receive a dielectric fluid.

11. A powered device comprising a battery pack structure as claimed in any one of claims 1-10.

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