Battery pack and vehicle

Abstract

The utility model discloses a battery pack and a vehicle, and relates to the technical field of vehicles, the battery pack comprises a shell, a battery management system, a battery module and a wire harness isolation plate, the battery management system and the battery module are both arranged in the shell, and the battery module comprises a plurality of battery cells arranged according to a preset mode; the wire harness isolation plate is provided with a plurality of conductive parts and at least one sampling circuit, the conductive parts are correspondingly and electrically connected to the battery cells, the sampling circuit is electrically connected to the plurality of conductive parts, and the sampling circuit is provided with a connector electrically connected with the battery management system. And the connector is arranged on one side, close to the battery management system, of the wire harness isolation plate. According to the technical scheme provided by the utility model, the sampling circuit can be electrically connected with the battery management system conveniently, and the possibility of complicated battery cell voltage and temperature sampling and communication wiring in the battery pack is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to a battery pack and a vehicle. Background Art

[0002] The power battery pack is a rechargeable battery and the power source of new energy vehicles, and is widely used in the field of new energy vehicles. The existing battery pack includes battery cells and a wire harness isolation assembly. The battery cells are arranged in the battery pack. The wire harness isolation assembly usually consists of a plastic bracket, a bus bar, and a sampling circuit. The sampling circuit is used to collect the voltage and temperature information of the battery cells and transmit it to the battery management system. Therefore, the sampling circuit is electrically connected to the battery cells and the battery management system respectively. However, since there are many battery cells in a battery pack, there are also many corresponding sampling circuits. Therefore, multiple sampling circuits need to be electrically connected to the battery management system, resulting in inconvenient connection and complex wiring for sampling the voltage and temperature of the battery cells and communication in the battery pack. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a battery pack, a vehicle, and a vehicle, aiming to facilitate the electrical connection between the sampling circuit and the battery management system and reduce the possibility of complex wiring for sampling the voltage and temperature of the battery cells and communication in the battery pack.

[0004] To achieve the above object, the battery pack proposed by the utility model includes:

[0005] A housing;

[0006] A battery management system and a battery module, both the battery management system and the battery module are arranged in the housing, and the battery module includes a plurality of battery cells arranged in a preset manner;

[0007] A wire harness isolation board, provided with a plurality of conductive members and at least one sampling circuit. The conductive members are correspondingly electrically connected to the battery cells, the sampling circuit is electrically connected to the plurality of conductive members, and the sampling circuit is provided with a connector for electrically connecting to the battery management system. The connector is arranged on the side of the wire harness isolation board close to the battery management system.

[0008] In an embodiment, an installation bracket is further arranged on the wire harness isolation board. The connector includes a first connector and a second connector. The first connector is arranged on the side of the wire harness isolation board close to the battery management system, and the second connector is fixed above the first connector through the installation bracket.

[0009] In one embodiment, a plurality of the battery cells are arranged in a first direction to form a row of battery cells, and a plurality of the rows of battery cells are arranged in a second direction to form the battery module. The first direction and the second direction are arranged at an angle. A plurality of the conductive members are correspondingly arranged with the plurality of the battery cells, and the sampling circuit extends along the first direction and is sequentially connected to the plurality of the conductive members connecting the same row of battery cells.

[0010] In one embodiment, the sampling circuit is configured as an integrated sampling circuit board, and the connector is fixed to one end of the integrated sampling circuit board; and / or,

[0011] The sampling circuit includes a voltage sampling circuit board and a temperature sampling circuit board. The voltage sampling circuit board is stacked above the temperature sampling circuit board, or the voltage sampling circuit board is stacked above the temperature sampling circuit board. A plurality of the connectors include a third connector and a fourth connector. The third connector is fixed to one end of the voltage sampling circuit board, and the fourth connector is fixed to one end of the temperature sampling circuit board.

[0012] In one embodiment, the wire harness isolation board further includes a plurality of conductive rows. Two ends of each conductive row are electrically connected to two rows of battery cells respectively, and the conductive rows are arranged on a side of the wire harness isolation board away from the connector.

[0013] In one embodiment, the battery pack further includes a liquid cooling structure and a grounding row. The liquid cooling structure is located inside the battery module and is clamped between adjacent battery cells. The grounding row is connected to the liquid cooling structure and the housing.

[0014] In one embodiment, the grounding row is fixed to one side of the wire harness isolation board, and one side of the grounding row is sequentially connected to the liquid cooling structure, and the other side is connected to the housing.

[0015] In one embodiment, the wire harness isolation board includes a wire harness isolation board bracket. A plurality of mounting grooves are formed in the wire harness isolation board bracket. The conductive members are correspondingly fixed in the mounting grooves, and the wire harness isolation board bracket is integrally formed.

[0016] In one embodiment, the housing includes an upper housing and a lower housing. The wire harness isolation board is arranged between the battery module and the lower housing. The battery cell has an explosion-proof valve, and the explosion-proof valve faces the lower housing, and the wire harness isolation board is fixedly connected to the upper housing.

[0017] In one embodiment, the battery management system includes a main control module and a slave control module which are electrically connected. The connector is electrically connected to the slave control module through a conductive wire harness.

[0018] The present utility model further provides a vehicle, including the battery pack as described above.

[0019] The technical solution of the present utility model is to provide a battery management system, a battery module and a wire harness isolation board inside a housing. The battery management system and the battery module are both arranged inside the housing. The battery module includes a plurality of battery cells arranged in a preset manner. The wire harness isolation board is provided with a plurality of conductive members and at least one sampling circuit. The conductive members are correspondingly electrically connected to the battery cells, and the sampling circuit is electrically connected to the plurality of conductive members to simultaneously collect the voltage and temperature information of the plurality of battery cells and connect to the battery management system, so as to transmit the collected battery cell information to the battery management system. And for the convenience of arranging the sampling circuit and reducing the possibility of wire harness disorder, a connector is provided on the sampling circuit, so as to facilitate the electrical connection between the sampling circuit and the battery management system. And at least one of the connectors is provided on each sampling circuit, and a plurality of connectors are arranged on one side of the wire harness isolation board close to the battery management system, and the plurality of connectors are sequentially connected to the battery management system, so as to realize the near-end extraction of the connectors relative to the battery management system, facilitate the connection of the connectors to the battery management system, and reduce the possibility of complex wiring for voltage and temperature sampling and communication of the battery cells in the battery pack. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 It is a schematic structural diagram of a wire harness isolation board in a battery pack in the prior art;

[0022] Figure 2 It is a schematic structural diagram of a wire harness isolation board in an embodiment of a battery pack provided by the present utility model;

[0023] Figure 3 For Figure 2 a partial enlarged view of the connector in the wire harness isolation board in

[0024] Figure 4 For Figure 2 a partial enlarged view of the grounding bar in the wire harness isolation board in

[0025] Figure 5 It is a partial enlarged view of the connector in the wire harness isolation board in another embodiment of the battery pack provided by the present utility model.

[0026] Explanation of the reference numerals in the drawings:

[0027] 1. Wiring harness isolation board; 11. Mounting bracket; 12. Conductive bar; 13. Conductive component; 14. Grounding bar; 15. Wiring harness isolation board bracket; 16. Mounting groove; 2. Sampling circuit; 21. Connector; 22. First connector; 23. Second connector; 24. Integrated sampling circuit board; 3. Liquid cooling structure; 4. Conductive wire harness.

[0028] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0029] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0032] The present utility model provides a battery pack for a vehicle.

[0033] Please refer to Figures 2 to 5 , in an embodiment of the present utility model, the battery pack includes:

[0034] A housing;

[0035] Battery management system and battery module. The battery management system and the battery module are both disposed within a housing. The battery module includes a plurality of battery cells arranged in a preset manner.

[0036] The wiring harness isolation board 1 is provided with a plurality of conductive members 13 and at least one sampling circuit 2. The conductive members 13 are correspondingly electrically connected to the battery cells, and the sampling circuit is electrically connected to the plurality of conductive members 13. Moreover, the sampling circuit 2 is provided with a connector 21 for electrically connecting to the battery management system, and the connector 21 is disposed on the side of the wiring harness isolation board 1 close to the battery management system.

[0037] Specifically, the battery pack includes a housing and a battery module disposed within the housing. The battery module includes a plurality of battery cells arranged in a preset manner. For example, a plurality of battery cells are arranged in a first direction to form a row of battery cells; or a plurality of battery cells are arranged in a first direction to form a plurality of rows of battery cells, and the plurality of rows of battery cells are arranged in a second direction, and the battery cells in adjacent two rows of battery cells are opposite or offset. Among them, the first direction and the second direction are arranged at an angle; or a plurality of battery cells are arranged irregularly within the battery pack, and its specific arrangement manner can be specifically set according to the type of the battery cell. The battery cell can be a cylindrical battery, a square battery, a blade battery, etc. The wiring harness isolation board 1 is installed within the housing, and the wiring harness isolation board 1 has a plurality of conductive members 13 corresponding to the battery cells. The pole columns of the battery cells are in contact with the conductive members 13, thereby realizing the electrical connection between the battery cells and the wiring harness isolation board 1. Among them, the conductive member 13 is usually some conductive bus bars, such as aluminum bus bars, copper bus bars, etc.

[0038] The sampling circuit 2 often connects a plurality of conductive members 13 at the same time to collect the voltage and temperature information of a plurality of battery cells at the same time, and is connected to the battery management system, thereby transmitting the collected battery cell information to the battery management system. However, because the number of battery cells in the battery pack is extremely large, often having dozens, hundreds or even thousands of battery cells, it is very difficult to connect them all by only one sampling circuit 2. Therefore, there are often a plurality of sampling circuits 2 in the battery pack. Each sampling circuit 2 often extends along the arrangement direction of the battery cells and connects a plurality of conductive members 13 connecting the battery cells at the same time. The plurality of sampling circuits 2 are then respectively electrically connected to the battery management system. This results in a large number of connection lines in the battery pack and inconvenient connection. Of course, in other embodiments, there can also be only one sampling circuit 2 in the battery pack. In this case, there is often only one row or one column of battery cells in the battery pack.

[0039] At this time, in order to facilitate the electrical connection between the sampling circuit 2 and the battery management system, a connector 21 is provided on the sampling circuit 2. The connector 21 is often configured as a quick-connect terminal, so as to facilitate the quick connection between the sampling circuit 2 and the battery management system, and each sampling circuit 2 is provided with at least one such connector 21, and multiple connectors 21 are all arranged on the side of the wiring harness isolation plate 1 close to the battery management system, so as to achieve the connector 21 relative to the battery management system. Leading out is convenient for the connector 21 to connect to the battery management system, reducing the possibility of complexity in the cell voltage and temperature sampling and communication routing in the battery pack.

[0040] Among them, because each conductive member 13 is connected to a corresponding battery cell, the arrangement of multiple conductive members 13 on the wiring harness isolation plate 1 is often similar to the arrangement of battery cells in the battery pack. The sampling circuit 2 can be connected to multiple conductive members 13 located in the same row or column (that is, conductive members 13 connected to battery cells in the same row or column), so as to facilitate the arrangement of the sampling circuit 2 and reduce the possibility of disorder in the wiring harness; it can also be connected to multiple conductive members 13 located in different rows or columns (that is, conductive members 13 connected to battery cells in different rows or columns), such as at least two of the multiple conductive members 13 connected to the sampling circuit 2 are located in different rows or columns. In addition, the connection methods of multiple sampling circuits 2 in the same battery pack can be the same or different. For example, in one embodiment, multiple sampling circuits 2 in the battery pack are all connected to multiple conductive members 13 in the same row or column; or multiple sampling circuits 2 in the battery pack are all connected to multiple conductive members 13 in different rows or columns. In another embodiment, some of the multiple sampling circuits 2 are connected to multiple conductive members 13 in the same row or column, and the other parts are connected to multiple conductive members 13 in different rows or columns. That is, in this solution, there is no restriction on the connection method between the sampling circuit 2 and the conductive member 13, as long as the sampling circuit 2 can be electrically connected to the battery cell through the conductive member 13, it is within the protection scope of this solution.

[0041] In this embodiment, the battery management system includes an electrically connected master control module and a slave control module, and the connector 21 is electrically connected to the slave control module through a conductive harness 4. The master control module is mainly used for the collection of total voltage and total current, internal and external communications, fault recording, fault decision-making, etc. The slave control module is mainly used for voltage collection, temperature collection and balancing functions of a single battery cell, and transmits information to the master control module. The master control module is usually arranged in a distribution box, and the slave control module is usually suspended nearby in the battery pack, such as on a crossbeam inside the battery pack. Multiple connectors 21 are all arranged on the side of the harness isolation plate 1 close to the battery management system, that is, the connectors 21 are all arranged on the side of the harness isolation plate 1 close to the electrical control box or the slave control module.

[0042] Among them, see Figure 1, in the prior art, there are often multiple small wire harness isolation plates 1 in the battery pack. A large wire harness isolation plate 1 is formed by connecting multiple small wire harness isolation plates 1 through conductive bars 12. This setting method often results in a relatively low overall strength of the wire harness isolation plate 1. Therefore, the wire harness isolation plate 1 only has the functions of electrical connection, signal transmission, and information collection between different battery cells and does not have a bearing function. Moreover, with this setting method, there are many related components of the wire harness isolation plate 1 in the battery pack, making installation inconvenient. In the battery pack of this solution, there is only one large wire harness isolation plate 1, which makes the overall strength of the wire harness isolation plate 1 relatively high, has a bearing function, and can bear the weight of at least part of the battery modules, thereby further reducing the required strength of the housing and reducing strength redundancy. Moreover, the wire harness isolation plate 1 is integrally formed, which helps to reduce the number of required components and improve the assembly efficiency of the battery pack.

[0043] Please refer to Figure 2 , the wire harness isolation plate 1 further includes multiple conductive bars 12. The two ends of the conductive bars 12 are electrically connected to two battery cell rows respectively, and the conductive bars 12 are arranged on the side of the wire harness isolation plate 1 away from the connector 21. The conductive bars 12 are used to connect different rows of battery cells, and the conductive bars 12 and the connector 21 are arranged on opposite sides of the wire harness isolation plate 1, so as to reasonably utilize the installation space of the wire harness isolation plate 1 and improve the layout rationality of the wire harness isolation plate 1.

[0044] Please refer to Figures 2 to 4 , in the embodiment of the present utility model, multiple connectors 21 are arranged in sequence on one side of the wire harness isolation plate 1. That is, multiple connectors 21 only have one layer in the longitudinal space of the battery pack (when the battery pack is installed on a vehicle, the height direction of the vehicle is the longitudinal direction of the battery pack), that is, the connectors 21 are all directly installed on the wire harness isolation plate 1, so as to facilitate the installation of the wire harness isolation plate 1.

[0045] Please refer to Figure 5 , in another embodiment of the present utility model, an installation bracket 11 is further provided on the wire harness isolation plate 1. The connector 21 includes a first connector 22 and a second connector 23. The first connectors 22 are arranged in sequence on the side of the wire harness isolation plate 1 close to the battery management system, and the second connector 23 is fixed above the first connector 22 through the installation bracket 11. That is, multiple connectors 21 have two layers in the longitudinal space of the battery pack, that is, multiple connectors 21 are divided into two parts, designated as the first connector 22 and the second connector 23. The second connector 23 is fixed above the first connector 22 through the installation bracket 11. When the number of connectors 21 is relatively large, this method can be adopted, and the connectors 21 are all arranged on the side of the wire harness isolation plate 1 facing the battery cells. Therefore, even if multiple layers of connectors 21 are set, the longitudinal dimension of the battery pack will not be increased.

[0046] In another embodiment of the present utility model, an installation bracket 11 is further provided on the wire harness isolation board 1. The connector 21 includes a first connector 22, a second connector 23, and a third connector. The first connectors 22 are arranged in sequence on one side of the wire harness isolation board 1. The second connector 23 is fixed above the first connector 22 through the installation bracket 11, and the third connector 21 is fixed above the second connector 23 through the installation bracket 11. That is, the number of layers of the multiple connectors 21 arranged longitudinally along the battery pack on the wire harness isolation board 1 can be three or more than three layers.

[0047] In one embodiment of the present utility model, multiple battery cells are arranged in a row along a first direction to form a battery cell row, and multiple battery cell rows are arranged in a second direction to form a battery module. The first direction and the second direction are arranged at an angle. Multiple conductive members 13 are correspondingly arranged with multiple battery cells, and the sampling circuit 2 extends along the first direction and is sequentially connected to the multiple conductive members 13 connecting the same battery cell row. Specifically, multiple battery cells are arranged in a row along the first direction to form a battery cell row, and multiple battery cell rows are arranged in a second direction to form a battery module, that is, multiple battery cells are arranged in an array. Multiple conductive members 13 are correspondingly arranged with multiple battery cells, that is, the conductive members 13 are also arranged in an array on the wire harness isolation board 1, and the conductive members 13 in the same row or column are respectively correspondingly connected to the battery cells in the corresponding row or column, so as to facilitate the connection between the conductive members 13 and the battery cells. The sampling circuit 2 extends along the first direction and is sequentially connected to the multiple conductive members 13 connecting the same battery cell row, so as to facilitate the connection between the sampling circuit 2 and the conductive members 13 in the vicinity. In other embodiments, the sampling circuit 2 extends along the second direction and is sequentially connected to the multiple conductive members 13 connecting the battery cells in the same column.

[0048] Among them, the sampling circuit 2 can be configured as a flexible circuit board to further reduce the chaos of wires. The flexible circuit board is arranged on one side of the battery cell row, and the flexible circuit board is electrically connected to the conductive member 13 through a conductive sheet. Specifically, one end of the conductive sheet overlaps the flexible circuit board to be electrically connected to the flexible circuit board, and the other end overlaps the conductive member 13 to be electrically connected to the battery cell. To ensure the fixing stability of the conductive sheet, the conductive sheet can be clamped or adhered to the wire harness isolation board 1, or both ends of the conductive sheet are respectively connected to the flexible circuit board and the conductive member 13. Of course, in other embodiments, the sampling circuit 2 can also be configured as a sampling wire harness.

[0049] When the sampling circuit 2 is configured as a flexible circuit board, please refer to Figure 2 and Figure 4, in an embodiment of the present utility model, the sampling circuit 2 is configured to integrate a sampling circuit board 24, and the connector 21 is fixed to one end of the integrated sampling circuit board 24. Specifically, the sampling circuit 2 is configured to integrate a sampling circuit board 24, that is, the flexible circuit board is configured as an integrated circuit board, which can collect both the voltage and temperature of the battery cell, and the connector 21 is fixed to one end of the integrated sampling circuit board 24. At this time, the number of required connectors 21 is small, and multiple connectors 21 can have only one layer in the longitudinal space of the battery pack.

[0050] When the sampling circuit 2 is configured as a flexible circuit board, please refer to Figure 5 , in another embodiment of the present utility model, the sampling circuit 2 includes a voltage sampling circuit board and a temperature sampling circuit board. The voltage sampling circuit board is stacked above the temperature sampling circuit board, or the voltage sampling circuit board is stacked above the temperature sampling circuit board. The multiple connectors 21 include a third connector and a fourth connector. The third connector is fixed to one end of the voltage sampling circuit board, and the fourth connector is fixed to one end of the temperature sampling circuit board. That is, the sampling circuit 2 includes two flexible circuit boards, and the two flexible circuit boards include a voltage sampling circuit board and a temperature sampling circuit board. To reduce the installation space, the two flexible circuit boards are stacked on top of each other. Correspondingly, the multiple connectors 21 also include a third connector and a fourth connector. The third connector is fixed to one end of the voltage sampling circuit board, and the fourth connector is fixed to one end of the temperature sampling circuit board. That is, connectors 21 are provided at both ends of the two flexible circuit boards. At this time, the number of required connectors 21 is large, and multiple connectors 21 can have multiple layers in the longitudinal space of the battery pack.

[0051] In an embodiment of the present utility model, the battery pack further includes a liquid cooling structure 3 and a grounding bar 14. The liquid cooling structure 3 is located inside the battery module and is clamped between adjacent battery cells. The grounding bar 14 is connected to the liquid cooling structure 3 and the housing. Specifically, to prevent the battery pack from overheating, a liquid cooling structure 3 is provided inside the battery pack, and the liquid cooling structure 3 is clamped between adjacent battery cells to take away the heat on the surface of the battery cells. At this time, the liquid cooling structure 3 is arranged inside the housing, and there is no direct connection relationship between it and the housing. The liquid cooling structure 3 may leak due to aging or poor quality control. Once the coolant in the liquid cooling structure 3 leaks, it is likely to cause safety hazards. Therefore, a grounding bar 14 is provided. The grounding bar 14 is respectively connected to the liquid cooling structure 3 and the housing to ground the liquid cooling structure 3, facilitating the operator to find the leakage position through insulation detection.

[0052] Among them, the liquid cooling structure 3 can be configured as multiple liquid cooling plates, and the liquid cooling plates are clamped between adjacent two rows of battery cells, that is, the rows of battery cells and the liquid cooling plates in the battery module are arranged alternately, and the liquid cooling plates are attached to the surface of the battery cells and clamp the battery cells to further fix the battery cells; the liquid cooling structure can also be configured as a liquid cooling pipe, and the liquid cooling pipe is wound inside the battery module and clamped between adjacent two battery cells.

[0053] To ensure the stable fixation of the grounding bar 14, in an embodiment of the present utility model, please refer to Figure 4 , the grounding bar 14 is fixed to one side of the wire harness isolation board 1, and one side of the grounding bar 14 is sequentially connected to the liquid cooling structure 3, and the other side is connected to the housing. The main body of the grounding bar 14 is fixed to one side of the wire harness isolation board 1, and the end of the liquid cooling structure 3 facing the wire harness isolation board 1 is made of aluminum, and a welding area or a clamping portion is provided above it. The grounding bar 14 can be welded to the welding area of the liquid cooling structure 3 or clamped to the clamping portion of the liquid cooling structure 3, and is further fixed by conductive glue. The other side of the grounding bar 14 is connected to the housing by bolts, so that the grounding bar 14 and the box body form a stable ground connection. When the liquid cooling structure 3 is configured as a plurality of liquid cooling plates, the grounding bar extends along the arrangement direction of the plurality of liquid cooling plates to connect the plurality of liquid cooling plates respectively.

[0054] In an embodiment of the present utility model, the wire harness isolation board 1 includes a wire harness isolation board bracket 15. A plurality of installation grooves 16 are formed on the wire harness isolation board bracket 15. The conductive members 13 are correspondingly fixed in the installation grooves 16, and the wire harness isolation board bracket is integrally formed. Specifically, the plurality of installation grooves 16 are arranged on the wire harness isolation board 1 in a preset manner, so that the installation grooves 16 correspond to the pole columns on the battery cells one by one, so that the pole columns on the installation grooves 16 are inserted into the installation grooves 16, and the first conductive members 13 are installed in the installation grooves 16. At least one glue injection hole is formed on the periphery of the installation groove 16, and the glue injection hole communicates with the installation groove 16. After the relative positioning of the wire harness isolation board 1 and the battery cell is completed, the pole column is inserted into the installation groove 16, and then glue is injected into the installation groove 16 from the glue injection hole, so as to realize the relative fixation of the pole column and the installation groove 16 and improve the electrical connection stability between the pole column and the conductive member 13. And the wire harness isolation board 1 is integrally formed, thereby further improving the structural strength of the wire harness isolation board 1 and improving the load-bearing capacity of the battery pack.

[0055] In an embodiment of the present utility model, the housing includes an upper housing and a lower housing that are mutually covered. The wire harness isolation board 1 is arranged between the battery module and the lower housing. The wire harness isolation board 1 is fixedly connected to the upper housing through. The battery cell has an explosion-proof valve, and the explosion-proof valve faces the lower housing. Specifically, the wire harness isolation board 1 is located between the battery cell and the lower housing, and the wire harness isolation board 1 is tightly connected to the upper housing. The battery cells are arranged on the wire harness isolation board 1. While the wire harness isolation board 1 plays the role of undertaking the electrical connection and signal transmission between different battery monomers, it also bears the weight of part of the battery cells, so that a plurality of battery cells can be fixedly installed between the upper housing and the wire harness isolation board 1, without additionally arranging transverse and longitudinal beams to enhance the installation strength of the battery cells and the upper housing, reducing the occupied space of the transverse and longitudinal beams and improving the overall energy density of the battery pack.

[0056] The wire harness isolation plate 1 can be fixedly connected to the upper shell through fasteners, so as to realize the fixed connection between the wire harness isolation plate 1 and the upper shell, thereby suspending the wire harness isolation plate 1 to improve the fixing strength of the wire harness isolation plate 1. In other embodiments, two suspension arms can also extend from the wire harness isolation plate 1, with one end of the two suspension arms connected to the upper shell and the other end connected to the wire harness isolation plate 1. When the battery cell undergoes thermal runaway, high-temperature and high-pressure gas will be discharged. The explosion-proof valve of the battery cell is arranged towards the lower shell, so as to reduce the high-temperature and high-pressure gas discharged from the battery cell to the vehicle interior, thereby improving the safety of the battery pack. And a smoke exhaust part can be arranged on the wire harness isolation plate 1 to timely discharge the high-temperature and high-pressure gas in the battery pack from the battery pack.

[0057] The present utility model also provides a vehicle, which includes a battery pack. The specific structure of the battery pack refers to the above embodiments. Since this vehicle adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0058] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the technical concept of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A battery pack, characterized in that: include: case; A battery management system and a battery module, wherein the battery management system and the battery module are both disposed in the housing, and the battery module comprises a plurality of battery cells arranged in a preset manner; A wiring harness isolation plate is provided with a plurality of conductive members and at least one sampling circuit, wherein the conductive members are electrically connected to the battery cells respectively, the sampling circuit is electrically connected to the plurality of conductive members, and the sampling circuit is provided with a connector for electrically connecting to the battery management system, and the connector is arranged on a side of the wiring harness isolation plate close to the battery management system.

2. The battery pack according to claim 1, characterized in that: A mounting bracket is also provided on the wiring harness isolation plate, and the connector includes a first connector and a second connector. The first connector is provided on a side of the wiring harness isolation plate close to the battery management system, and the second connector is fixed above the first connector through the mounting bracket.

3. The battery pack according to claim 1, wherein: A plurality of the battery cells are arranged along a first direction to form a battery cell row, and a plurality of the battery cell rows are arranged along a second direction to form the battery module. The first direction and the second direction are arranged at an angle, a plurality of the conductive members are arranged corresponding to the plurality of the battery cells, and the sampling circuit extends along the first direction and is sequentially connected to the plurality of conductive members connected to the same battery cell row.

4. The battery pack according to claim 1, wherein: The sampling circuit is configured as an integrated sampling circuit board, and the connector is fixed to one end of the integrated sampling circuit board; and / or, The sampling circuit includes a voltage sampling circuit board and a temperature sampling circuit board, the voltage sampling circuit board is stacked on top of the temperature sampling circuit board, or the voltage sampling circuit board is stacked on top of the temperature sampling circuit board, the multiple connectors include a third connector and a fourth connector, the third connector is fixed to one end of the voltage sampling circuit board, and the fourth connector is fixed to one end of the temperature sampling circuit board.

5. The battery pack according to claim 3, characterized in that: The wiring harness isolation plate further comprises a plurality of conductive bars, both ends of which are electrically connected to the two battery core bars respectively, and the conductive bars are arranged on a side of the wiring harness isolation plate away from the connector.

6. The battery pack according to claim 1, wherein: The battery pack further includes a liquid cooling structure and a grounding bar. The liquid cooling structure is located in the battery module and is sandwiched between adjacent battery cells. The grounding bar is connected to the liquid cooling structure and the shell.

7. The battery pack according to claim 6, characterized in that: The grounding bar is fixed to one side of the wiring harness isolation plate, and one side of the grounding bar is connected to the liquid cooling structure, and the other side of the grounding bar is connected to the shell.

8. The battery pack according to claim 1, wherein: The wiring harness isolation plate comprises a wiring harness isolation plate bracket, a plurality of mounting grooves are provided on the wiring harness isolation plate bracket, the conductive members are correspondingly fixed in the mounting grooves, and the wiring harness isolation plate bracket is integrally formed.

9. The battery pack according to any one of claims 1 to 8, characterized in that: The shell includes an upper shell and a lower shell, the wiring harness isolation plate is arranged between the battery module and the lower shell, the battery cell has an explosion-proof valve, the explosion-proof valve is arranged toward the lower shell, and the wiring harness isolation plate is fixedly connected to the upper shell.

10. The battery pack according to any one of claims 1 to 8, characterized in that: The battery management system comprises a master control module and a slave control module which are electrically connected, and the connector is electrically connected to the slave control module through a conductive harness.

11. A vehicle, characterized in that: A battery pack comprising the battery pack as claimed in any one of claims 1 to 10.

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