CN220021450U

CN220021450U - Battery pack

Info

Publication number: CN220021450U
Application number: CN202320297660.5U
Authority: CN
Inventors: 卓威; 易昊昊; 冯朝均
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-11-14
Anticipated expiration: 2033-02-22

Abstract

The utility model provides a battery pack, which comprises a bottom plate, a battery core assembly, a battery management system and a communication panel. The plugging surface of the communication panel faces the front surface of the battery pack and is electrically connected with the battery management system. In the embodiment of the utility model, the plugging surface of the communication panel electrically connected with the battery management system faces the front surface of the battery pack, so that when the battery pack is plugged and installed on a ship, an external plugging wiring harness can be placed in an extending manner along the width direction, thereby reducing the space occupied by the battery pack in the length direction of the battery pack. The external plug-in wiring harness extends and places along the width direction, so that the space in the length direction of the battery pack is saved, the technical problem that the cabin space is insufficient when the battery pack is applied to a ship is solved, and the universality and the installation convenience of the battery pack in the ship application are improved.

Description

Battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack.

Background

In recent years, the power energy of ships has been electrically operated, and the types of ship energy have been gradually changed from fossil energy to low-carbon energy, and lithium batteries have been used in ships. The cabin space position of the ship is narrow, the space occupied by the battery pack of the common specification for placement and installation is large, and the battery pack cannot be matched with the cabin space. In the related art, the battery pack and the external plug-in port face the length direction of the battery pack, and the external plug-in port and the battery pack occupy the space in the length direction, so that the battery pack and the cabin are not adapted.

Therefore, there is a need to design a battery pack that can reduce the space occupied in the longitudinal direction, facilitate installation in a cabin, and alleviate the problem of insufficient cabin space, so that the battery pack can be suitable for various ship types.

Disclosure of Invention

The embodiment of the utility model provides a battery pack, which can reduce the occupied space in the length direction of the battery pack, relieve the technical problem of insufficient cabin space and improve the universality and the installation convenience of the battery pack in ship application.

Embodiments of the present utility model provide a battery pack having a length direction, a width direction, and a height direction perpendicular to each other, wherein a surface defined by the length direction and the height direction is a front surface. The battery pack includes:

a bottom plate;

the battery cell assembly is arranged on the bottom plate;

the battery management system is fixed at the end part of the battery cell assembly along the length direction and is electrically connected with the battery cell assembly;

the plugging surface of the communication panel faces the front surface of the battery pack and is electrically connected with the battery management system.

In one embodiment, the battery pack further comprises:

the plug-in surface of the positive and negative electrode panel faces the front surface of the battery pack;

the positive electrode connecting row is connected with an output positive electrode of the battery cell assembly and the positive electrode plate and the negative electrode plate;

the negative electrode connecting row is connected with the output negative electrode of the battery cell assembly and the positive electrode plate and the negative electrode plate.

In one embodiment, the cell assembly has a first end and a second end along the length direction. The positive and negative electrode plates are disposed at the first end, and the battery management system and the communication panel are disposed at the second end.

In one embodiment, the cell assembly further comprises a fixing plate disposed at the second end. The battery management system is fixed on the fixing plate.

In one embodiment, the communication panel includes a first board body, a first groove formed in the first board body, and a connector disposed in the first groove.

The positive and negative electrode plates comprise a second plate body, a second groove formed in the second plate body, and a positive electrode joint and a negative electrode joint which are arranged in the second groove.

The battery pack also comprises a top cover, wherein the top cover is covered with the battery cell assembly and is connected with the bottom plate. The top cover is provided with a first opening and a second opening, the first opening at least exposes the connector, and the second opening at least exposes the positive electrode connector and the negative electrode connector.

In an embodiment, the communication panel further includes a first connection plate located at a side of the first plate body close to the bottom plate, and the positive-negative electrode plate further includes a second connection plate located at a side of the second plate body close to the bottom plate. The first connecting plate is connected with the bottom plate, and the second connecting plate is connected with the bottom plate.

In one embodiment, the cell assembly comprises a cell disposed on the base plate, and an aerogel conduit disposed around a surface of the cell. Aerogel is arranged in the aerogel pipeline, and the aerogel pipeline comprises a first pipe orifice arranged at the second end part.

In an embodiment, the aerogel conduit further comprises a second nozzle disposed on a side of the cell remote from the base plate, and the cell assembly further comprises a temperature sensor disposed on the second nozzle, the temperature sensor being bonded to the aerogel.

In one embodiment, the cell assembly further comprises a first securing strap and an insulating layer disposed on the cell, the insulating layer covering the aerogel conduit. The insulating layer is provided with a first fixing hole, the second pipe orifice is communicated with the first fixing hole, and the first fixing belt fixes the temperature sensor in the first fixing hole.

The first pipe orifice is arranged on the fixed plate.

In an embodiment, the battery cell assembly comprises a battery cell and a first wire harness, and the battery management system comprises a temperature acquisition module and a voltage acquisition module, wherein the temperature acquisition module and the voltage acquisition module are connected to the battery cell by the first wire harness.

In one embodiment, the battery pack further comprises a second wire harness and a second fixing strap, and the communication panel is connected with the battery management system by adopting the second wire harness; the fixing plate further includes a second fixing hole through which the second fixing strap passes to fix the second harness.

In an embodiment, the battery cell assembly further comprises a battery cell arranged on the bottom plate and end plates arranged at two ends of the battery cell along the length direction, and the fixing plate is fixedly connected with the end plates.

In an embodiment, the positive and negative electrode plates include a negative electrode tab and a positive electrode tab disposed sequentially along the height direction.

The positive electrode connecting row comprises an extension piece and a bending piece, one end of the extension piece is connected with the output positive electrode of the battery cell assembly, the other end of the extension piece is connected with one end of the bending piece, and the other end of the bending piece is connected with the positive electrode connector. The extending piece extends along the height direction, and the bending piece is arranged along the width direction.

The battery cell comprises a battery cell assembly, a negative electrode connecting row and a positive electrode connecting row, wherein one end of the negative electrode connecting row is connected with a negative electrode of the battery cell assembly, the other end of the negative electrode connecting row is connected with a negative electrode joint, and the negative electrode connecting row extends along the height direction and is arranged at intervals with the positive electrode connecting row.

The embodiment of the utility model has the beneficial effects that:

in the embodiment of the utility model, the plugging surface of the communication panel electrically connected with the battery management system faces the front surface of the battery pack, so that when the battery pack is plugged and installed on a ship, an external plugging wiring harness can be placed in an extending manner along the width direction, thereby reducing the space occupied by the battery pack in the length direction of the battery pack. The external plug-in wiring harness extends and places along the width direction, so that the space in the length direction of the battery pack is saved, the technical problem that the cabin space is insufficient when the battery pack is applied to a ship is solved, and the universality and the installation convenience of the battery pack in the ship application are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present utility model;

fig. 2 is a schematic view of a structure of a second end portion of a battery pack according to an embodiment of the present utility model;

fig. 3 is a schematic view of the front surface of a battery pack according to an embodiment of the present utility model;

fig. 4 is a schematic perspective view of a top cover, a bottom plate, a communication panel and an anode and cathode panel in a battery pack according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of section A-A' of FIG. 1.

Reference numerals: a battery pack 100; a length direction x; a width direction y; a height direction z; a front side s; a bottom plate 10; a cell assembly 20; a cell 21; a fixing plate 22; an aerogel pipe 23; a first nozzle 231; a second nozzle 232; aerogel 24; a temperature sensor 25; an insulating layer 26; foam 27; an end plate 28; a first end 201; a second end 202; a top cover 30; a first opening K1; a second opening K2; a battery management system BMS; a communication panel P1; a first plate P11; a first groove P12; connector P13; a first connection plate P14; a positive and negative electrode panel P2; a second plate P21; a second groove P22; positive electrode tab P23; a negative electrode tab P24; a second connection plate P25; a positive electrode connection row B1; an extension member B11; bending piece B12; a negative electrode connection row B2; outputting a positive electrode B3; an output anode B4; a first fixing hole G1; a second fixing hole G2; a first fixing band D1; the first wire harness S1.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the utility model. In the present utility model, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a battery pack 100, where the battery pack 100 has a length direction x, a width direction y and a height direction z perpendicular to each other, and a surface defined by the length direction x and the height direction z is a front surface s. The battery pack 100 includes a base plate 10, a battery cell assembly 20 disposed on the base plate 10, and a battery management system BMS (Battery Management System, BMS) and a communication panel P1. The battery management system BMS is fixed at an end of the battery cell assembly 20 along the length direction x, and is electrically connected with the battery cell assembly 20. The mating face of the communication panel P1 faces the front s of the battery pack 100 and is electrically connected to the battery management system BMS.

Wherein, the bottom plate 10 can be made of aluminum with the model A380, which is easy for mass production and can reduce the cost.

In the embodiment of the utility model, the plugging surface of the communication panel P1 electrically connected with the battery management system BMS faces the front surface s of the battery pack 100, so that when the battery pack 100 is plugged and installed on a ship, an external plugging wiring harness can be placed in an extending manner along the width direction y, thereby reducing the space occupied by the battery pack 100 in the length direction x of the battery pack 100. The external plug-in wiring harness extends and is placed along the width direction y, so that the space in the length direction x of the battery pack 100 is saved, the technical problem that the cabin space is insufficient when the battery pack 100 is applied to a ship is solved, and the universality and the installation convenience of the battery pack 100 in the ship application are improved.

In addition, the battery management system BMS is fixed to the ends of the battery cell assembly 20 along the length direction x, so that the space at both ends of the battery pack 100 in the length direction x can be fully utilized. The communication panel P1 is further arranged to face the plugging surface towards the front surface s, so that the external plugging harness is arranged along the width direction y of the battery pack 100, and the space occupied by the battery pack 100 in the length and width directions y can be balanced.

Specifically, the battery pack 100 further includes a liquid cooling device disposed on the bottom plate 10, for cooling the battery cell assembly 20.

In the embodiment of the present utility model, the battery pack 100 further includes a positive and negative electrode panel P2, a positive electrode connection row B1, and a negative electrode connection row B2. The insertion surface of the positive and negative electrode plates P2 faces the front surface s of the battery pack 100. The positive electrode connection row B1 connects the positive electrode B3 and the positive electrode plate P2 of the output of the cell assembly 20. The negative electrode connection row B2 connects the output negative electrode B4 of the cell assembly 20 and the positive and negative electrode plates P2.

It will be appreciated that the mating face of the externally mated positive and negative pole plates P2 is oriented toward the front s of the battery pack 100. The external components are inserted into the anode and the cathode of the battery pack 100 along the width direction y, so that the space occupied in the length direction x of the battery pack 100 is further reduced, and the problem of insufficient cabin space when the battery pack 100 is applied to a ship is solved.

In an embodiment of the present utility model, the cell assembly 20 has a first end 201 and a second end 202 along the length direction x. The positive and negative electrode panel P2 is disposed at the first end 201, and the battery management system BMS and the communication panel P1 are disposed at the second end 202.

It should be noted that, the battery management system BMS has various specifications, and the sizes of the different specifications are different. The positive and negative electrode panel P2 is disposed at the first end 201, and the connection structure of the cell assembly 20 and the positive and negative electrode panel P2 occupies the space of the first end 201 of the cell assembly 20. The battery management system BMS and the communication panel P1 are disposed at the second end 202, and the battery management system BMS and the communication panel P1 occupy the space of the second end 202 of the battery cell assembly 20. The anode panel P2, the battery management system BMS and the communication panel P1 are respectively arranged at two ends of the battery cell assembly 20, so that the problem of insufficient space can be avoided, and enough space is ensured to be used for installing and replacing the battery management systems BMS with different specifications.

In an embodiment of the present utility model, the battery cell assembly 20 further includes a fixing plate 22 disposed at the second end 202, and the battery management system BMS is fixed to the fixing plate 22.

It can be appreciated that the fixing plate 22 provided at the second end 202 serves to fix the battery management system BMS. The battery management system BMS can be mounted by providing the fixing plate 22 to avoid damage to the surface of the battery cell 21.

Alternatively, the battery management system BMS may be fixed to the fixing plate 22 by a connection member. The battery management system BMS can be conveniently installed, disassembled and replaced through the connection of the connecting pieces.

Referring to fig. 3 and 4, in the embodiment of the utility model, the communication panel P1 includes a first board P11, a first groove P12 formed on the first board P11, and a connector P13 disposed in the first groove P12. The positive and negative electrode panel P2 includes a second plate body P21, a second groove P22 formed in the second plate body P21, and positive and negative electrode tabs P23 and P24 provided in the second groove P22.

The battery pack 100 further includes a top cover 30, and the top cover 30 covers the battery cell assembly 20 and is connected to the bottom plate 10. The top cover 30 is provided with a first opening K1 and a second opening K2, the first opening K1 exposing at least the connector P13, and the second opening K2 exposing at least the positive electrode tab P23 and the negative electrode tab P24.

It can be understood that the first plate P11 of the communication panel P1 is provided with a first groove P12, and the first groove P12 is concave relative to the first plate P11. The connector P13 is disposed in the first groove P12, so that the connector P13 does not protrude from the plane of the first board P11. Similarly, a second groove P22 is formed in the second plate P21 of the positive and negative electrode plate P2, and the second groove P22 is recessed with respect to the second plate P21. The positive electrode tab P23 and the negative electrode tab P24 are disposed in the second groove P22 such that the positive electrode tab P23 and the negative electrode tab P24 do not exceed the plane in which the second plate body P21 is disposed. When the top cover 30 is mounted on the cell assembly 20 from top to bottom, the top cover 30 is not blocked by the connector P13 and the positive and negative electrode contacts P24, and can be smoothly mounted and connected to the bottom plate 10.

The first and second openings K1 and K2 are opened in the top case 30 to expose the connector P13, the positive electrode tab P23 and the negative electrode tab P24, so that external devices can be connected to the battery management system BMS through the connector P13, and the positive and negative electrodes of the battery cell 21 can be connected through the positive electrode tab P23 and the negative electrode tab P24.

Alternatively, the first groove P12 may have a concave depth of 8 mm to 12 mm, for example 8 mm, 10 mm or 12 mm, with respect to the first plate body P11. This allows the top cover 30 to be mounted without being obstructed by the connector P13. The depth of the second groove P22 is the same as that of the first groove P12, and will not be described here.

Optionally, an installation hole is formed at the edge of the first plate body P11 of the communication panel P1, and an installation hole is formed at a position of the top cover 30 corresponding to the edge of the first plate body P11, where the communication panel P1 is fixed to the top cover 30 by using a bolt. The communication panel P1 may also be fixed to the top cover 30 by using a buckle, which is not limited in the present utility model.

The protection security level of the battery pack 100 provided by the embodiment of the utility model meets the IP67 standard. The IP67 standard refers to the protection level of the outer case of the battery pack 100 formed by the connection of the top cover 30 and the bottom plate 10. Specifically, the battery pack 100 has a solid state protection rating of 6, which can protect dust from entering; the liquid protection grade is 7, and the short soaking can be protected.

Alternatively, the top cover 30 and the bottom plate 10 may be connected by a connection member. Specifically, the connecting piece may be a bolt, and corresponding mounting holes are formed on the bottom plate 10 and the top cover 30 for fastening.

Optionally, the battery pack 100 includes an insulating cover disposed between the top cover 30 and the cell assembly 20 for fire protection. The isolation cover can be foldable, and is convenient to place after being disassembled.

In the embodiment of the present utility model, the communication panel P1 further includes a first connection plate P14 located on a side of the first plate body P11 near the bottom plate 10, and the positive and negative electrode plates P2 further include a second connection plate P25 located on a side of the second plate body P21 near the bottom plate 10. The first connecting plate P14 is connected to the bottom plate 10, and the second connecting plate P25 is connected to the bottom plate 10.

The communication panel P1 is fixedly connected to the base plate 10 through a first connection plate P14. Similarly, the positive and negative electrode panel P2 is connected and fixed to the bottom plate 10 by the second connecting plate P25. By arranging the connecting plates to connect the panel with the bottom plate 10, the communication panel P1 and the positive and negative electrode plates P2 can be fixed on the bottom plate 10 before the top cover 30 is installed, so that the installation of the subsequent communication panel P1, the positive and negative electrode plates P2 and the top cover 30 is facilitated. When the top cover 30 is covered on the battery cell assembly 20 from top to bottom, the communication panel P1 and the positive and negative electrode panel P2 fixed on the bottom plate 10 respectively correspond to the first opening K1 and the second opening K2 of the top cover 30, and the first plate P11 and the second plate P21 are mounted on the top cover 30 to realize fixed connection. That is, the first connecting plate P14 and the second connecting plate P25 are used to fix the communication panel P1 and the positive and negative electrode plates P2, which can facilitate the installation of the subsequent panel and the top cover 30, and further enhance the stability of the panel.

Referring to fig. 5, in an embodiment of the present utility model, the cell assembly 20 includes a cell 21 disposed on the base plate 10, and an aerogel pipe 23 wound around the surface of the cell 21. Aerogel 24 is disposed within aerogel conduit 23. Aerogel conduit 23 includes a first nozzle 231 disposed at second end 202.

The battery cell 21 may be a lithium iron phosphate LF280K battery cell 21 with a model of LF 280K.

It should be noted that when the body temperature reaches the temperature at which aerogel 24 expands, aerogel 24 in contact with the body expands rapidly and bursts, and consumes oxygen. Therefore, the aerogel pipe 23 is wound on the surface of the electric core 21, when the temperature of the electric core 21 is abnormally increased, even when the electric core catches fire, the aerogel 24 is heated and rapidly exploded, and oxygen in the battery pack 100 is consumed, so that fire extinguishing is realized, and over-high temperature protection is realized. Aerogel conduit 23 includes a first nozzle 231 disposed at second end 202. Aerogel 24 expands thermally and bursts at first orifice 231, contacting the air.

In an embodiment of the present utility model, aerogel conduit 23 further comprises a second nozzle 232 disposed on a side of cell 21 remote from base plate 10, and cell assembly 20 further comprises a temperature sensor 25 disposed on second nozzle 232, temperature sensor 25 being bonded to aerogel 24.

It will be appreciated that aerogel conduit 23 is provided with second orifice 232 so that temperature sensor 25 can be positioned within aerogel 24 with second orifice 232 to adhesively secure temperature sensor 25 to aerogel 24. Furthermore, aerogel conduit 23 is provided with a second orifice 232 on the side of cell 21 remote from base plate 10, i.e. on the upper surface of cell 21, it is more convenient to provide temperature sensor 25.

Alternatively, the temperature sensor 25 is a temperature sensor 25 with a wire harness. The wiring harness connected to the temperature sensor 25 may extend along the aerogel conduit 23 or may be provided on the surface of the cell 21 through the second nozzle 232. Alternatively, the temperature sensor 25 may also be a wireless temperature sensor 25, to which the present utility model is not limited.

In the embodiment of the present utility model, the first nozzle 231 is provided at the fixing plate 22. The cell assembly 20 further includes a first fixing band D1 and an insulation layer 26 disposed on the cell 21, the insulation layer 26 covering the aerogel conduits 23. The insulating layer 26 is provided with a first fixing hole G1, the second nozzle 232 communicates with the first fixing hole G1, and the first fixing belt D1 fixes the temperature sensor 25 in the first fixing hole G1.

Among them, the insulating layer 26 may be made of polycarbonate material, but is not limited thereto. The polycarbonate has good insulating properties.

Referring again to fig. 1 and 2, in an embodiment of the present utility model, a plurality of sequentially arranged battery cells 21 form a battery cell group, and the battery pack 100 includes two parallel battery cell groups. An insulating layer 26 covers the upper surface of a cell stack. A foam 27 is further disposed on the insulating layer 26, and the foam 27 exposes the first fixing hole G1 and does not form a shielding for the first fixing hole G1. Foam 27 may further insulate.

It will be appreciated that the first orifice 231 extends to open onto the fixed plate 22 and that the aerogel 24 bursts out into contact with the air at the first orifice 231 of the fixed plate 22.

The insulating layer 26 is disposed on the electric core 21, and the insulating layer 26 is provided with a first fixing hole G1, the second pipe orifice 232 is communicated with the first fixing hole G1, and the temperature sensor 25 can be fixed at the first fixing hole G1 where the insulating layer 26 is disposed by using the first fixing belt D1 to pass through the first fixing hole G1, so as to further fix the temperature sensor 25. Since the insulating layer 26 is provided on the cell 21, the temperature sensor 25 is fixed through the first fixing hole G1 on the insulating layer 26 and is in contact with the aerogel 24, and can detect the temperature of the surface of the cell 21.

In an embodiment of the present utility model, the cell assembly 20 includes a cell 21 and a first wire harness S1. The battery management system BMS comprises a temperature acquisition module and a voltage acquisition module. The temperature acquisition module and the voltage acquisition module are connected to the battery cell 21 by a first wire harness S1.

Specifically, a temperature sensor 25 is correspondingly disposed on a battery cell 21, for collecting temperature information of the battery cell 21. The temperature acquisition module of the battery management system BMS is connected with the battery cell 21 and the temperature sensor 25 by adopting the first wire harness S1, and can acquire temperature information of the battery cell 21 to monitor the battery cell 21. The voltage acquisition module is connected with the battery cell 21 by adopting the first wire harness S1, and can acquire voltage information of the battery cell 21 so as to monitor the battery cell 21.

It can be appreciated that, on one hand, aerogel 24 on the surface of cell 21 is bonded with temperature sensor 25 for monitoring the temperature of the surface of multiple cells 21; on the other hand, the temperature acquisition module of the battery management system BMS is used for acquiring the temperature of each battery cell 21 for temperature monitoring. That is, two parallel temperature monitoring systems which are not interfered with each other are arranged, so that the temperature of each cell 21 can be monitored more accurately and timely. And if one of the temperature monitoring systems fails, the other temperature monitoring system can be still used for monitoring the temperature of the battery cell 21.

In the embodiment of the present utility model, the battery pack 100 further includes a second harness and a second fixing strap (not shown). The communication panel P1 of the battery pack 100 is connected to the battery management system BMS using a second harness. The fixing plate 22 of the second end 202 further includes a second fixing hole G2, and the second fixing strap passes through the second fixing hole G2 to fix the second wire harness.

It will be appreciated that by fixing the second harness at the second fixing hole G2 and the second fixing strap, the harness of the second end portion 202 can be tidied up, avoiding the messy placement of the harness.

In the embodiment of the present utility model, the battery cell assembly 20 further includes a battery cell 21 disposed on the base plate 10 and end plates 28 disposed at both ends of the battery cell 21 along the length direction x, and the fixing plate 22 is fixedly connected to the end plates 28.

It will be appreciated that the use of the end plate 28 in conjunction with the mounting plate 22 provides a mounting location for the battery management system BMS while avoiding mechanical damage to the battery cells 21 due to direct connection of the mounting plate 22 to the battery cells 21.

In the embodiment of the present utility model, the positive and negative electrode plates P2 include the negative electrode tab P24 and the positive electrode tab P23 sequentially arranged along the height direction z. The positive electrode connection row B1 includes an extension piece B11 and a bending piece B12. Specifically, one end of the extension member B11 is connected to the output positive electrode B3 of the battery cell assembly 20, the other end of the extension member B11 is connected to one end of the bending member B12, and the other end of the bending member B12 is connected to the positive electrode joint P23 of the positive and negative electrode plate P2. Wherein the extension member B11 extends in the height direction z, and the bending member B12 is disposed in the width direction y.

One end of the negative electrode connection row B2 is connected to the negative electrode of the cell assembly 20, and the other end of the negative electrode connection row B2 is connected to the negative electrode tab P24. The negative electrode connection row B2 extends along the height direction z and is disposed at a distance from the positive electrode connection row B1.

It can be appreciated that the positive electrode connection row B1 and the negative electrode connection row B2 need to be separately arranged, so as to avoid mutual interference during electric transmission of the positive electrode connection row B1 and the negative electrode connection row B2. The extension member B11 in the positive electrode connection row B1 extends along the height direction z, and the bent member B12 is provided along the width direction y in order to separate the positive electrode connection row B1 and the negative electrode connection row B2 as much as possible, thereby avoiding interference.

Embodiments of the present utility model provide a battery pack having a length direction, a width direction, and a height direction perpendicular to each other. Wherein the lengthwise and the height define a front face. The battery pack includes: the battery management system comprises a bottom plate, a battery cell assembly, a battery management system and a communication panel. Specifically, the battery cell assembly is arranged on the bottom plate. The battery management system is fixed at the end of the cell assembly along the length direction. The plug-in surface of the communication panel faces the front surface of the battery pack. The battery management system is electrically connected with the battery core assembly, and the communication panel is electrically connected with the battery management system.

The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims

1. A battery pack having a longitudinal direction, a width direction and a height direction perpendicular to each other, wherein a surface defined by the longitudinal direction and the height direction is a front surface, is characterized by comprising

A bottom plate;

the battery cell assembly is arranged on the bottom plate;

2. The battery pack of claim 1, wherein the battery pack further comprises

3. The battery pack of claim 2, wherein the cell assembly has a first end and a second end along the length direction; the positive and negative electrode plates are disposed at the first end, and the battery management system and the communication panel are disposed at the second end.

4. The battery pack of claim 3, wherein the cell assembly further comprises a securing plate disposed at the second end, the battery management system secured to the securing plate.

5. The battery pack according to any one of claims 2 to 4, wherein the communication panel comprises a first plate body, a first groove formed in the first plate body, and a connector provided in the first groove;

the positive and negative electrode plates comprise a second plate body, a second groove formed in the second plate body, and a positive electrode joint and a negative electrode joint which are arranged in the second groove;

the battery pack also comprises a top cover, wherein the top cover is covered with the battery cell assembly and is connected with the bottom plate; the top cover is provided with a first opening and a second opening, the first opening at least exposes the connector, and the second opening at least exposes the positive electrode connector and the negative electrode connector.

6. The battery pack of claim 5, wherein the communication panel further comprises a first connection plate positioned on a side of the first plate body adjacent to the bottom plate, and the positive and negative electrode plates further comprise a second connection plate positioned on a side of the second plate body adjacent to the bottom plate; the first connecting plate is connected with the bottom plate, and the second connecting plate is connected with the bottom plate.

7. The battery pack of claim 4, wherein the cell assembly comprises a cell disposed on the base plate and an aerogel conduit wound around a surface of the cell; aerogel is arranged in the aerogel pipeline, and the aerogel pipeline comprises a first pipe orifice arranged at the second end part.

8. The battery pack of claim 7, wherein the aerogel conduit further comprises a second nozzle disposed on a side of the cell remote from the base plate, the cell assembly further comprising a temperature sensor disposed on the second nozzle, the temperature sensor being bonded to the aerogel.

9. The battery pack of claim 8, wherein the cell assembly further comprises a first securing strap and an insulating layer disposed on the cell, the insulating layer covering the aerogel conduit; the insulating layer is provided with a first fixing hole, the second pipe orifice is communicated with the first fixing hole, and the first fixing belt fixes the temperature sensor in the first fixing hole;

the first pipe orifice is arranged on the fixed plate.

10. The battery pack of any one of claims 1-4, wherein the cell assembly comprises a cell and a first wire harness, the battery management system comprises a temperature acquisition module and a voltage acquisition module, and the temperature acquisition module and the voltage acquisition module are connected to the cell using the first wire harness.

11. The battery pack of claim 4, further comprising a second harness and a second securing strap, the communication panel being coupled to the battery management system using the second harness; the fixing plate further includes a second fixing hole through which the second fixing strap passes to fix the second harness.

12. The battery pack of claim 4, wherein the cell assembly further comprises a cell disposed on the base plate and end plates disposed at both ends of the cell along the length direction, and the fixing plate is fixedly connected to the end plates.

13. The battery pack according to claim 3, wherein the positive and negative electrode plates include a negative electrode tab and a positive electrode tab disposed in order along the height direction;

the positive electrode connecting row comprises an extension piece and a bending piece, one end of the extension piece is connected with the output positive electrode of the battery cell assembly, the other end of the extension piece is connected with one end of the bending piece, and the other end of the bending piece is connected with the positive electrode connector; the extending piece extends along the height direction, and the bending piece is arranged along the width direction;